CN203007821U - SCS steel tube concrete pier with double stiffening structures added on upper end portion and lower end portion - Google Patents

Abstract

The utility model discloses an SCS concrete-filled steel pipe pier with double stiffening structures added to the upper and lower ends, comprising an outer steel pipe, an inner steel pipe set inside the outer steel pipe, a top stiffening structure, a bottom stiffening structure, and an outer steel pipe and an inner steel pipe filled in the pier. The concrete structure formed by pouring concrete in the cavity between them, the inner steel pipe is a circular steel pipe; the outer steel pipe and the inner steel pipe are arranged coaxially; the top stiffening structure includes multiple PBL stiffeners and multiple hoops arranged from top to bottom Rib 1, the bottom stiffener structure includes multiple PBL stiffeners 2 and multiple stirrups 2 arranged from top to bottom; the transverse width of each PBL stiffener 1 and each PBL stiffener 2 is smaller than the position where they are laid The spacing between the outer and inner steel pipes. The utility model has the advantages of simple structure, reasonable design, convenient construction, low construction cost, excellent mechanical performance and good use effect, and can effectively solve various problems existing in the existing steel pipe concrete bridge piers.

Description

A SCS steel pipe concrete bridge pier with double stiffening structure added at the upper and lower ends

technical field

The utility model relates to a steel pipe concrete bridge pier, in particular to an SCS steel pipe concrete bridge pier with double stiffening structures added to the upper and lower ends.

Background technique

Concrete filled steel pipe refers to the structure formed after the steel pipe is filled with concrete. The two materials of steel and concrete make up for each other's weaknesses and give full play to each other's strengths, so that the steel tube concrete has a high bearing capacity and excellent mechanical properties. Nowadays, CFST structures are more and more widely used in structures such as offshore platforms and long-span, heavy-duty, and light bridges, and the CFST structures used mainly have three cross-sectional forms: circular, square, and rectangular. However, the currently used concrete-filled steel tube structures generally have structural defects that limit the development and application of concrete-filled steel tube structures to a large extent.

After the opening stiffeners (referred to as PBL stiffeners) are arranged in the steel pipe, it not only improves the compressive strength of the core concrete, but also enhances the stability of the steel pipe wall; at the same time, the opening stiffeners act as shear members, making the steel pipe It is integrated with concrete, which improves the combined effect of steel and concrete. However, in actual use, the buckling of the steel pipe is directly related to the stiffness of the PBL stiffener, so it is not easy to control, and the constructed steel pipe concrete pier has a large self-weight.

In addition, due to the perennial dynamic load, the top and bottom of the bridge pier are most affected, and local buckling of steel pipes is very easy to occur, which eventually leads to the destruction of the bridge pier structure. However, the middle part of the pier structure has better stability and is not prone to local buckling.

To sum up, it is necessary to make corresponding improvements to the structure of the concrete-filled steel pipe bridge piers used today.

Utility model content

The technical problem to be solved by the utility model is to provide an SCS concrete-filled steel pipe pier with a double stiffening structure at the upper and lower ends, which has a simple structure, reasonable design, convenient construction and low construction cost. Excellent performance and good use effect, which can effectively solve the existing problems of existing concrete-filled steel tube concrete piers, such as the poor connection performance between the outer steel tube and the inner concrete, the lower effect of the outer steel tube on the inner concrete hoop, and the upper and lower ends are prone to bending And other issues.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a SCS concrete-filled steel pipe pier with double stiffening structure added to the upper and lower ends, which is characterized in that it includes an outer steel pipe, an inner steel pipe set inside the outer steel pipe, and is arranged on the outer The top stiffening structure between the top of the steel pipe and the top of the inner steel pipe, the bottom stiffening structure arranged between the bottom of the outer steel pipe and the bottom of the inner steel pipe, and after the top stiffening structure and the bottom stiffening structure are laid out A concrete structure formed by pouring concrete filled in the cavity between the outer steel pipe and the inner steel pipe, the inner steel pipe is a circular steel pipe and arranged in the middle of the inner side of the outer steel pipe; the outer steel pipe and the inner steel pipe are arranged coaxially; The top stiffening structure includes a plurality of PBL stiffening ribs one, and the bottom stiffening structure includes a plurality of PBL stiffening ribs two. The central axes of the inner steel pipe and the outer steel pipe are in the same direction, and the plurality of PBL stiffeners one and the plurality of PBL stiffeners two are all fastened and connected with the concrete structure; the plurality of PBL stiffeners one and The two PBL stiffeners described in the plurality of channels are elongated steel ribs, and the inner walls of the first PBL stiffener and the second PBL stiffener are fastened and fixed on the inner wall of the outer steel pipe; The first PBL stiffener and the plurality of PBL stiffeners two are arranged along the circumferential direction of the inner steel pipe; the longitudinal lengths of the outer steel pipe and the inner steel pipe are all the same, and the top surface of the outer steel pipe is the same as the top end of the inner steel pipe. The surfaces are flush, and the bottom end surface of the outer steel pipe is flush with the bottom end surface of the inner steel pipe; the top surfaces of the multiple PBL stiffening ribs are all flush with the top surface of the inner steel pipe, and the multiple PBL stiffeners The bottom end surface of the second rib is flush with the bottom end surface of the inner steel pipe; the transverse width of each PBL stiffening rib one is equal to the distance between the outer steel pipe and the inner steel pipe at the position where it is laid. And the transverse width of each PBL stiffener 2 is equal to the distance between the outer steel pipe and the inner steel pipe at the position where it is arranged.

The middle part of each said PBL stiffener 1 is provided with a plurality of through holes 1 from top to bottom, and a plurality of said plurality of through holes 1 are arranged on the same straight line; the middle part of each said PBL stiffener 2 is There are a plurality of through holes 2 from top to bottom, and the plurality of through holes 2 are arranged on the same straight line; the number of through holes 1 opened on the plurality of PBL stiffeners 1 and the layout positions of each through hole 1 are all the same; the number of through holes 2 and the layout positions of each through hole 2 on the PBL stiffeners 2 are the same; the top stiffening structure also includes multiple layers arranged on the multiple PBL Stirrups 1 on the stiffening rib 1 , the plurality of stirrups 1 are arranged in parallel, the number of the plurality of stirrups 1 is the same as the number of the plurality of through holes 1 , and the plurality of stirrups 1 are respectively Pass through a plurality of through holes opened on each PBL stiffener 1; the bottom stiffener structure also includes a plurality of channels arranged on the plurality of PBL stiffeners 2 from top to bottom. Two stirrups, the plurality of stirrups two are arranged in parallel, the number of the plurality of stirrups two is the same as the number of the plurality of through holes two, and the plurality of stirrups two are respectively from each of the said two stirrups The plurality of said through holes 2 opened on the PBL stiffener 2 pass through.

The above-mentioned SCS concrete-filled steel pipe pier with double stiffening structure added to the upper and lower ends is characterized in that: multiple PBL stiffening ribs 1 and multiple PBL stiffening ribs 2 are evenly arranged along the circumferential direction of the inner steel pipe.

The above-mentioned SCS steel pipe concrete pier with double stiffening structure added to the upper and lower ends is characterized in that: the outer diameter of the inner steel pipe is Ф102 mm to Ф2000 mm, the wall thickness of the outer steel pipe and the inner steel pipe are both 4 mm to 66 mm, and A1 : A2=1: (0.6～0.8), where A1=a1+b1, a1 is the cross-sectional area of the outer steel pipe and b1 is the cross-sectional area of the inner hollow part of the outer steel pipe, A2=π·r ² and r is the inner steel pipe the outer diameter.

The above-mentioned SCS steel pipe concrete bridge pier with double stiffening structure added to the upper and lower ends is characterized in that: the number of the multiple PBL stiffening ribs one and the multiple PBL stiffening ribs two are the same, and the multiple PBL stiffening ribs The two are arranged directly under the PBL stiffener one of the plurality of channels respectively.

The above-mentioned SCS concrete-filled steel pipe pier with double stiffening structure added to the upper and lower ends is characterized in that the cross-section of the outer steel pipe is circular, rectangular or regular polygonal.

The above-mentioned SCS concrete-filled steel pipe pier with a double stiffening structure added to the upper and lower ends is characterized in that: the thickness of the multiple PBL stiffening ribs 1 and the multiple PBL stiffening ribs 2 is d1, wherein d1≤D, D is The wall thickness of the outer steel pipe; the greater the wall thickness of the outer steel pipe, the greater the thicknesses of the first PBL stiffener and the second PBL stiffener.

其中d3为所述圆形孔一所处PBL加劲肋一的横向宽度；所述通孔二为圆形孔二，且所述圆形孔二的孔径

其中d5为所述圆形孔二所处PBL加劲肋二的横向宽度。The above-mentioned SCS concrete-filled steel pipe pier with a double stiffening structure added to the upper and lower ends is characterized in that: the through hole is a circular hole, and the diameter of the circular hole is

Wherein d3 is the lateral width of the PBL stiffener one where the circular hole one is located; the second through hole is a circular hole two, and the aperture of the circular hole two

Wherein, d5 is the lateral width of the PBL stiffener 2 where the circular hole 2 is located.

The above-mentioned SCS concrete-filled steel pipe pier with double stiffening structure added to the upper and lower ends is characterized in that: the longitudinal lengths of the multiple PBL stiffening ribs are the same and the longitudinal lengths are 1m to 1.5m; the multiple PBL stiffening ribs The longitudinal lengths of the two are the same and the longitudinal lengths are 1m to 1.5m.

The above-mentioned SCS concrete-filled steel pipe pier with double stiffening structure added to the upper and lower ends is characterized in that the number of the first PBL stiffening ribs and the second PBL stiffening ribs are 4 to 8.

The above-mentioned SCS concrete-filled steel pipe pier with double stiffening structure added to the upper and lower ends is characterized in that: the concrete structure is a carbon fiber concrete structure.

Compared with the prior art, the utility model has the following advantages:

1. Simple structure, reasonable design and low construction cost.

2. The structure is light and the anti-seismic and torsional performance is good.

3. The construction is convenient and the use effect is good. The SCS steel pipe concrete column structure formed by the construction has good mechanical properties and light structure. The inner and outer steel pipes are connected by poured concrete to form a whole. In actual use, the utility model can fully improve the self-heaviness and other defects of the steel pipe concrete structure. It uses the larger cross-sectional area of the outer steel pipe to provide a larger cross-sectional torsional and bending moment of inertia, and uses the inner steel pipe to effectively reduce the concrete volume. The self-weight is reduced, and the sandwich concrete is in a three-way compression state and the inner and outer steel pipes are connected as a whole. Therefore, the utility model can give full play to the advantages of simple form and easy construction of the steel pipe concrete joint, the relative moment of inertia of the section is relatively large, the performance of earthquake resistance and torsion resistance is good, and it can effectively overcome the poor connection performance between the steel pipe and its internal concrete. 1. The outer steel pipe has small hoop effect on the inner concrete. The utility model uses the built-in round steel pipe to enhance the hoop effect on the concrete, and uses the effective concrete volume of the inner steel pipe to reduce the self-weight.

4. The concrete poured between the inner and outer steel pipes can be either ordinary concrete or carbon fiber concrete. Moreover, the content of carbon fiber added in the carbon fiber concrete used is about 0.6% by mass, which can increase the tensile strength and tensile ductility of the concrete by 30% and 25% respectively. Carbon fiber is made of carbon fiber filaments through chopped mechanical cutting. The length is generally in mm, and the shape is a certain length of velvet. High performance, and has the advantages of uniform dispersion, various feeding methods, and simple process. Adding an appropriate amount of chopped carbon fiber to the concrete can improve the tensile strength, strength and impact resistance of the concrete, reduce drying shrinkage, and improve wear resistance. This concrete is lighter than ordinary concrete and has certain heat insulation properties and shock absorption performance. Compared with the steel pipe concrete structure in which the interior of the inner steel pipe and the space formed between the inner steel pipe and the outer steel pipe are all filled with concrete, the utility model can make full use of the strength of the built-in round steel pipe.

5. At the upper and lower ends of the bridge pier, open-hole stiffeners are used to enhance the out-of-plane stability of the outer steel pipe, and correspondingly greatly enhance the structural shear resistance, and at the same time tightly connect the components of the entire steel pipe concrete bridge pier into a whole. Combined with multiple stirrups, the multiple opening stiffeners are organically connected as a whole, which further enhances the integrity of the upper and lower ends of the entire concrete-filled steel pipe pier. The perforated stiffeners not only improve the compressive strength of the core concrete, but also enhance the stability of the pipe wall; at the same time, the perforated stiffeners act as shear members, connecting the steel pipe and concrete as a whole, improving the strength of steel and concrete. combination effect. Moreover, the utility model has strong operability, and can effectively solve the problem that the bending time of the steel pipe is not easy to control due to the relationship between the stiffness of the opening stiffener.

To sum up, the utility model has the advantages of simple structure, reasonable design, convenient construction, low construction cost, excellent mechanical properties and good use effect, and can effectively solve the problems of self-heaviness and the gap between the outer steel pipe and the inner concrete of the existing steel pipe concrete bridge piers. There are many problems such as poor connection performance, small hoop effect of the outer steel pipe on the inner concrete, and easy bending of the upper and lower ends.

The technical solutions of the present utility model will be further described in detail through the drawings and embodiments below.

Description of drawings

Fig. 1 is a schematic structural view of Embodiment 1 of the present utility model.

Fig. 2 is a schematic diagram of the internal structure of Embodiment 1 of the present utility model.

Fig. 3 is a schematic diagram of the top structure of Embodiment 1 of the present utility model.

Fig. 4 is a schematic structural diagram of Embodiment 2 of the present utility model.

Fig. 5 is a schematic structural diagram of Embodiment 3 of the present utility model.

Fig. 6 is a schematic structural view of Embodiment 4 of the present utility model.

Fig. 7 is a schematic structural diagram of Embodiment 5 of the present utility model.

Fig. 8 is a schematic structural diagram of Embodiment 6 of the present utility model.

Fig. 9 is a schematic structural view of Embodiment 7 of the present utility model.

Explanation of reference signs:

1—outer steel pipe; 2—inner steel pipe; 3-1—PBL stiffener 1;

3-2—PBL stiffener 2; 4—concrete structure; 5-1—through hole 1;

5-2—through hole two; 6-1—stirrup one; 6-2—stirrup two.

Detailed ways

Example 1

且每一道所述PBL加劲肋二3-2的横向宽度，均为其所布设位置处外钢管1和内钢管2之间间距的 As shown in Figure 1, Figure 2 and Figure 3, the utility model comprises an outer steel pipe 1, an inner steel pipe 2 set inside the outer steel pipe 1, a top stiffening structure arranged between the top of the outer steel pipe 1 and the top of the inner steel pipe 2, and the layout The bottom stiffening structure between the bottom end of the outer steel pipe 1 and the bottom end of the inner steel pipe 2 and the space between the outer steel pipe 1 and the inner steel pipe 2 is filled after the top stiffening structure and the bottom stiffening structure are laid out. The concrete structure 4 formed by pouring the concrete in the cavity, the inner steel pipe 2 is a circular steel pipe and it is arranged in the middle part of the inner side of the outer steel pipe 1 . The outer steel pipe 1 and the inner steel pipe 2 are arranged coaxially. The top stiffening structure includes multiple PBL stiffening ribs 1 3-1, and the bottom stiffening structure includes multiple PBL stiffening ribs 2 3-2, the multiple PBL stiffening ribs 1 3-1 and the multiple PBL stiffening ribs 3-1. The layout direction of the PBL stiffener 2 3-2 is consistent with the central axis direction of the inner steel pipe 2 and the outer steel pipe 1, and the plurality of PBL stiffener 3-1 and the plurality of PBL stiffener 2 3- 2 are all fastened and connected with the concrete structure 4 as a whole. The multiple PBL stiffeners 1 3-1 and the multiple PBL stiffeners 2 3-2 are elongated steel ribs, and the multiple PBL stiffeners 3-1 and the multiple PBL stiffeners The inner side walls of rib two 3-2 are fastened and fixed on the inner side walls of the outer steel pipe 1. The plurality of first PBL stiffeners 3-1 and the second PBL stiffeners 3-2 are arranged along the circumferential direction of the inner steel pipe 2 . The longitudinal lengths of the outer steel pipe 1 and the inner steel pipe 2 are the same, the top end of the outer steel pipe 1 is flush with the top end of the inner steel pipe 2, and the bottom end of the outer steel pipe 1 is flush with the bottom end of the inner steel pipe 2. flush. The top surfaces of the multiple PBL stiffeners 1 3-1 are flush with the top surfaces of the inner steel pipe 2, and the bottom surfaces of the multiple PBL stiffeners 2 3-2 are all flush with the bottom surface of the inner steel pipe 2 together. The transverse width of each PBL stiffener 3-1 is equal to the distance between the outer steel pipe 1 and the inner steel pipe 2 at the position where it is arranged.

And the transverse width of each PBL stiffener 2 3-2 is equal to the distance between the outer steel pipe 1 and the inner steel pipe 2 at the position where it is arranged.

The middle part of each PBL stiffener 3-1 has a plurality of through holes 5-1 from top to bottom, and the plurality of through holes 5-1 are arranged on the same straight line; The middle part of the two PBL stiffeners 3-2 is provided with a plurality of through holes 5-2 from top to bottom, and the plurality of through holes 5-2 are arranged on the same straight line. The number of through-holes-5-1 opened on the plurality of PBL stiffeners-3-1 and the arrangement position of each through-hole-5-1 are the same. The number of through holes 5-2 provided on the plurality of PBL stiffeners 2 3-2 and the layout positions of each through hole 2 5-2 are the same. The top stiffening structure also includes a plurality of stirrups-6-1 arranged on the plurality of PBL stiffening ribs-3-1 from top to bottom, and the plurality of stirrups-6-1 are arranged in parallel, and the plurality of stirrups-6-1 are arranged in parallel. The number of said stirrups 6-1 is the same as the number of said through holes 5-1, and said multiple stirrups 6-1 are connected from each said PBL stiffener 3-1 respectively. A plurality of through-holes 1-5-1 opened above pass through. The bottom stiffening structure also includes a plurality of stirrups 2 6-2 arranged on the plurality of PBL stiffening ribs 2 3-2 from top to bottom, and the plurality of stirrups 2 6-2 are arranged in parallel, The number of the plurality of stirrups 2 6-2 is the same as the number of the plurality of through holes 2 5-2, and the plurality of stirrups 2 6-2 are from each of the PBL stiffeners 2 3- A plurality of said through holes 2 5-2 opened on the 2 pass through.

During actual processing, the outer diameter of the inner steel pipe 2 is Ф102 mm to Ф2000 mm, the wall thickness of the outer steel pipe 1 and the inner steel pipe 2 are both 4 mm to 66 mm, and A1: A2 = 1: (0.6 to 0.8), where A1 =a1+b1, a1 is the cross-sectional area of the outer steel pipe 1 and b1 is the cross-sectional area of the hollow part inside the outer steel pipe 1, A2=π·r ² and r is the outer diameter of the inner steel pipe 2.

In this embodiment, the outer diameter of the inner steel pipe 2 is Ф200mm and the wall thickness is 15mm. In actual use, the outer diameter of the inner steel pipe 2 can be adjusted in the range of Ф102 mm to Ф2000 mm, and the wall thickness of the inner steel pipe 2 can be adjusted in the range of 4 mm to 66 mm according to specific needs.

During actual processing, the cross section of the outer steel pipe 1 is circular, rectangular or regular polygonal.

In this embodiment, the cross section of the outer steel pipe 1 is square.

During specific processing, the cross section of the outer steel pipe 1 can also adopt other shapes such as rectangle, circle, regular polygon, etc.

In this embodiment, A1:A2=1:0.7. In actual use, the ratio of A1:A2 can be adjusted within the range of 1:(0.6-0.8) according to specific needs.

In this embodiment, the concrete structure 4 is a carbon fiber concrete structure.

In actual processing, A1 is preferably 4m ² -10m ² , and the wall thicknesses of the outer steel pipe 1 and the inner steel pipe 2 are preferably 18mm-25mm.

In this embodiment, A1=D ² =6m ² , where D is the side length of the outer wall of the outer steel pipe 1 , and the wall thickness of the outer steel pipe 1 is 20mm. In actual use, A1 can be adjusted in the range of 4m ² -10m ² according to specific needs, and the wall thickness of the outer steel pipe 1 can be adjusted in the range of 4mm-66mm.

During actual processing and production, the plurality of first PBL stiffening ribs 3-1 and the plurality of second PBL stiffening ribs 3-2 are evenly arranged along the circumferential direction of the inner steel pipe 2 . In this embodiment, the numbers of the first PBL stiffeners 3-1 and the second PBL stiffeners 3-2 are the same, and the second PBL stiffeners 3-2 of the multiple lanes are arranged on the multiple lanes respectively. The PBL stiffener is directly below a 3-1.

The numbers of the first PBL stiffener 3-1 and the second PBL stiffener 3-2 are 4-8.

In this embodiment, the number of the first PBL stiffeners 3-1 and the second PBL stiffeners 3-2 is 4, and the four first stiffeners 3-1 of the PBL are respectively fixed on the outside The middle parts of the four side walls of the steel pipe 1, and the four PBL stiffening ribs 2 3-2 are respectively fixed on the middle parts of the four side walls of the outer steel pipe 1.

During actual construction, each PBL stiffener 3-1 is fixed on the outer wall of the outer steel pipe 1 by welding, and each PBL stiffener 2 3-2 is fixed on the outer side of the outer steel pipe 1 by welding on the wall.

In this embodiment, the concrete structure 4 is a carbon fiber concrete structure.

In this embodiment, the thicknesses of the multiple PBL stiffeners 1 3-1 and the multiple PBL stiffeners 2 3-2 are both d1, where d1≤D, and D is the wall thickness of the outer steel pipe 1; The greater the wall thickness of the outer steel pipe 1, the greater the thicknesses of the first PBL stiffening ribs 3-1 and the second PBL stiffening ribs 3-2.

其中d3为所述圆形孔一所处PBL加劲肋一3-1的横向宽度；所述通孔二5-2为圆形孔二，且所述圆形孔二的孔径

其中d5为所述圆形孔二所处PBL加劲肋二3-2的横向宽度。During actual processing, the through hole 1 5-1 is a circular hole 1, and the aperture of the circular hole 1

Wherein d3 is the lateral width of the PBL stiffener 3-1 where the circular hole 1 is located; the second through hole 5-2 is the circular hole 2, and the aperture of the circular hole 2

Wherein d5 is the lateral width of the PBL stiffener 2 3-2 where the circular hole 2 is located.

且所述圆形孔二的孔径 $d4=\frac{1}{5}d5.$ In this embodiment, the diameter of the circular hole one

And the aperture of the circular hole 2 $\mathrm{<figure-callout\; id="4"\; label="d"\; filenames="HDA00002668365100011.png,HDA00002668365100021.png"\; state="\{\{state\}\}">d</figure-callout>}4=\frac{1}{5}d5.$

的范围内进行相应调整，并且可以将所述圆形孔二的孔径d4在

的范围内进行相应调整。同时，可以根据具体需要，将每一道所述PBL加劲肋一3-1的横向宽度在其所布设位置处外钢管1和内钢管2之间间距的

之间进行相应调整；并且，可以根据具体需要，将每一道所述PBL加劲肋二3-2的横向宽度在其所布设位置处外钢管1和内钢管2之间间距的

之间进行相应调整。同时，可以根据具体需要，对所述PBL加劲肋3和所述箍筋6的数量进行相应调整。During actual processing and production, the aperture d2 of the circular hole 1 can be adjusted according to specific needs.

Adjust accordingly within the range, and the aperture d4 of the circular hole 2 can be

Adjust accordingly. Simultaneously, according to specific needs, the transverse width of each said PBL stiffener 3-1 can be set at the distance between the outer steel pipe 1 and the inner steel pipe 2 at the position where it is arranged.

and, according to specific needs, the transverse width of each said PBL stiffener 2 3-2 is equal to the distance between the outer steel pipe 1 and the inner steel pipe 2 at the position where it is arranged.

Adjust accordingly. At the same time, the numbers of the PBL stiffeners 3 and the stirrups 6 can be adjusted accordingly according to specific needs.

In this embodiment, the longitudinal lengths of multiple PBL stiffeners 1 3-1 are the same and their longitudinal lengths are 1m to 1.5m; the longitudinal lengths of multiple PBL stiffeners 2 3-2 are all the same and their longitudinal lengths are The length is 1m ~ 1.5m.

During actual processing, when the cross-section of the outer steel pipe 1 is a rectangle or a regular polygon, a plurality of PBL stiffeners 3-1 are respectively arranged in the middle of each side wall of the outer steel pipe 1, and a plurality of said Two PBL stiffeners 3-2 are respectively arranged in the middle of each side wall of the outer steel pipe 1 .

Example 2

As shown in Figure 4, in this embodiment, the difference from Embodiment 1 is: the cross section of the outer steel pipe 1 is circular, A1:A2=1:0.6, the walls of the outer steel pipe 1 and the inner steel pipe 2 The thickness is 25mm, A1=π·R ² =10m ² , where R is the outer diameter of the outer steel pipe 1 .

In this embodiment, the structures and connections of other parts are the same as those in Embodiment 1.

Example 3

As shown in FIG. 5 , in this embodiment, the difference from Embodiment 2 is that the number of the first PBL stiffener 3 - 1 and the second PBL stiffener 3 - 2 is 6.

In this embodiment, the structures and connections of other parts are the same as those in Embodiment 2.

Example 4

As shown in Figure 6, in this embodiment, the difference from Embodiment 2 is that the cross section of the outer steel pipe 1 is a regular hexagonal shape, and the cross section of the inner hollow part of the outer steel pipe 1 is a regular hexagonal hole , and A1=the cross-sectional area of the outer steel pipe 1+the cross-sectional area of the regular hexagonal hole; the number of the PBL stiffener one 3-1 and the PBL stiffener two 3-2 is 8, and the 8 first PBL stiffeners 3-1 and the 8 second PBL stiffeners 3-2 are respectively fixed in the middle of the 8 side walls of the outer steel pipe 1.

In this embodiment, the structures and connections of other parts are the same as those in Embodiment 2.

Example 5

As shown in Figure 7, in this embodiment, the difference from Embodiment 1 is that the cross-section of the outer steel pipe 1 is a regular hexagon, A1:A2=1:0.8, the outer steel pipe 1 and the inner steel pipe 2 The wall thickness is 25mm, A1=10m ² , the cross-section of the inner hollow part of the outer steel pipe 1 is a regular hexagonal hole, and A1=the cross-sectional area of the outer steel pipe 1+the cross-sectional area of the regular hexagonal hole; The number of the first PBL stiffener 3-1 and the second PBL stiffener 3-2 is 6, and the 6 first stiffeners 3-1 of the PBL and the second stiffener 3-2 of the PBL are respectively fixed on the outside The middle parts of the 6 side walls of the steel pipe 1. In actual use, the cross section of the outer steel pipe 1 can also be other regular polygons.

In this embodiment, the structures and connections of other parts are the same as those in Embodiment 1.

Example 6

As shown in Figure 8, in this embodiment, different from Embodiment 1, the cross section of the outer steel pipe 1 is a regular octagon, and the cross section of the inner hollow part of the outer steel pipe 1 is a regular octagon hole, and A1= The cross-sectional area of the outer steel pipe 1+the cross-sectional area of the regular octagonal hole; the number of the PBL stiffener 1 3-1 and the PBL stiffener 2 3-2 is 8, and 8 The first PBL stiffener 3-1 and the second PBL stiffener 3-2 described in the eighth track are respectively fixed in the middle of the eight side walls of the outer steel pipe 1.

In this embodiment, the structures and connections of other parts are the same as those in Embodiment 1.

Example 7

As shown in Figure 9, in this embodiment, the difference from Embodiment 9 is that the number of the first PBL stiffener 3-1 and the second PBL stiffener 3-2 is 4, and the 4 PBL stiffeners The first rib 3-1 and the fourth PBL stiffening rib 2 3-2 are respectively fixed in the middle of the four side walls of the outer steel pipe 1.

In this embodiment, the structures and connections of other parts are the same as those in Embodiment 9.

Example 8

所述圆形孔一的孔径d2为

每一道所述PBL加劲肋二3-2的横向宽度，均为其所布设位置处外钢管1和内钢管2之间间距的

所述圆形孔二的孔径d4为

所述内钢管2的外径为102mm，所述外钢管1和内钢管2的壁厚均为4mm，A1=4m²。In this embodiment, the difference from Embodiment 1 is that the transverse width of each PBL stiffener 3-1 is equal to the distance between the outer steel pipe 1 and the inner steel pipe 2 at the position where it is arranged.

The aperture d2 of described circular hole one is

The transverse width of each PBL stiffener 2 3-2 is equal to the distance between the outer steel pipe 1 and the inner steel pipe 2 at the position where it is arranged.

The aperture d4 of described circular hole two is

The outer diameter of the inner steel pipe 2 is 102mm, the wall thickness of the outer steel pipe 1 and the inner steel pipe 2 are both 4mm, A1=4m ² .

In this embodiment, the structures and connections of other parts are the same as those in Embodiment 1.

Example 9

所述圆形孔一的孔径d2为

每一道所述PBL加劲肋二3-2的横向宽度，均为其所布设位置处外钢管1和内钢管2之间间距的

所述圆形孔二的孔径d4为

所述内钢管2的外径为Ф1000mm，所述外钢管1和内钢管2的壁厚均为40mm，A1=8m²。In this embodiment, the difference from Embodiment 1 is that the transverse width of each PBL stiffener 3-1 is equal to the distance between the outer steel pipe 1 and the inner steel pipe 2 at the position where it is arranged.

The aperture d2 of described circular hole one is

The transverse width of each PBL stiffener 2 3-2 is equal to the distance between the outer steel pipe 1 and the inner steel pipe 2 at the position where it is arranged.

The aperture d4 of described circular hole two is

The outer diameter of the inner steel pipe 2 is Ф1000mm, the wall thicknesses of the outer steel pipe 1 and the inner steel pipe 2 are both 40mm, and A1=8m ² .

In this embodiment, the structures and connections of other parts are the same as those in Embodiment 1.

Example 10

所述圆形孔一的孔径d2为每一道所述PBL加劲肋二3-2的横向宽度，均为其所布设位置处外钢管1和内钢管2之间间距的所述圆形孔二的孔径d4为

所述内钢管2的外径为2000mm，所述外钢管1和内钢管2的壁厚均为66mm，A1=10m²。In this embodiment, the difference from Embodiment 1 is that the transverse width of each PBL stiffener 3-1 is equal to the distance between the outer steel pipe 1 and the inner steel pipe 2 at the position where it is arranged.

The aperture d2 of described circular hole one is The transverse width of each PBL stiffener 2 3-2 is equal to the distance between the outer steel pipe 1 and the inner steel pipe 2 at the position where it is arranged. The aperture d4 of described circular hole two is

The outer diameter of the inner steel pipe 2 is 2000mm, the wall thicknesses of the outer steel pipe 1 and the inner steel pipe 2 are both 66mm, and A1=10m ² .

In this embodiment, the structures and connections of other parts are the same as those in Embodiment 1.

Example 11

所述圆形孔一的孔径d2为

每一道所述PBL加劲肋二3-2的横向宽度，均为其所布设位置处外钢管1和内钢管2之间间距的

所述圆形孔二的孔径d2为

所述内钢管2的外径为2000mm，所述外钢管1和内钢管2的壁厚均为100mm，A1=10m²。In this embodiment, the difference from Embodiment 1 is that the transverse width of each PBL stiffener 3-1 is equal to the distance between the outer steel pipe 1 and the inner steel pipe 2 at the position where it is arranged.

The aperture d2 of described circular hole one is

The transverse width of each PBL stiffener 2 3-2 is equal to the distance between the outer steel pipe 1 and the inner steel pipe 2 at the position where it is arranged.

The aperture d2 of the circular hole two is

The outer diameter of the inner steel pipe 2 is 2000mm, the wall thicknesses of the outer steel pipe 1 and the inner steel pipe 2 are both 100mm, and A1=10m ² .

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical essence of the present utility model still belong to Within the scope of protection of the technical solution of the utility model.

Claims (10)

1. a upper and lower end parts is set up the SCS concrete pier of steel tube of dual reinforcing structure, it is characterized in that: comprise outer steel pipe (1), be set in the inner interior steel pipe (2) of outer steel pipe (1), be laid in the top reinforcing structure between outer steel pipe (1) top and interior steel pipe (2) top, be laid in bottom reinforcing structure between outer steel pipe (1) bottom and interior steel pipe (2) bottom and after described top reinforcing structure and described bottom reinforcing structure have all been laid by the concrete structure (4) that is filled in the concreting moulding in cavity between outer steel pipe (1) and interior steel pipe (2), described interior steel pipe (2) is laid in the middle inside of outer steel pipe (1) for round steel pipe and its, described outer steel pipe (1) and interior steel pipe (2) are coaxial laying, described top reinforcing structure comprises multiple tracks PBL stiffening rib one (3-1), and described bottom reinforcing structure comprises multiple tracks PBL stiffening rib two (3-2), the cloth set direction of the described PBL stiffening rib one of multiple tracks (3-1) and the described PBL stiffening rib two of multiple tracks (3-2) is all consistent with the central axial direction of described interior steel pipe (2) and outer steel pipe (1), and the described PBL stiffening rib one of multiple tracks (3-1) and the described PBL stiffening rib two of multiple tracks (3-2) all are fastenedly connected and are integrated with concrete structure (4), the described PBL stiffening rib two of the described PBL stiffening rib one of multiple tracks (3-1) and multiple tracks (3-2) is strip steel floor, and the inside wall of the described PBL stiffening rib two of the described PBL stiffening rib one of multiple tracks (3-1) and multiple tracks (3-2) is all on the fastening inside wall that is fixed on outer steel pipe (1), the described PBL stiffening rib two of the described PBL stiffening rib one of multiple tracks (3-1) and multiple tracks (3-2) is all laid along the circumferencial direction of interior steel pipe (2), the longitudinal length of described outer steel pipe (1) and interior steel pipe (2) is all identical, and the top end face of described outer steel pipe (1) is mutually concordant with the top end face of interior steel pipe (2), and the bottom face of described outer steel pipe (1) is mutually concordant with the bottom face of interior steel pipe (2), the top end face of the described PBL stiffening rib one of multiple tracks (3-1) is all mutually concordant with the top end face of interior steel pipe (2), and the bottom face of the described PBL stiffening rib two of multiple tracks (3-2) is all mutually concordant with the bottom face of interior steel pipe (2), every transverse width of described PBL stiffening rib one (3-1) together, be outside its installation position place spacing between steel pipe (1) and interior steel pipe (2)

and every transverse width of described PBL stiffening rib two (3-2) together, be outside its installation position place spacing between steel pipe (1) and interior steel pipe (2)

Every middle part of described PBL stiffening rib one (3-1) together all has a plurality of through holes one (5-1) from top to bottom, and a plurality of described a plurality of through holes one (5-1) are laid on same straight line; Every middle part of described PBL stiffening rib two (3-2) together all has a plurality of through holes two (5-2) from top to bottom, and a plurality of described through hole two (5-2) is laid on same straight line; On the described PBL stiffening rib one of multiple tracks (3-1) the installation position of the quantity of the through hole of offering (5-1) and each through hole one (5-1) all identical; On the described PBL stiffening rib two of multiple tracks (3-2) the installation position of the quantity of the through hole of offering two (5-2) and each through hole two (5-2) all identical; Described top reinforcing structure also comprises that multiple tracks is laid in the stirrup one (6-1) on the described PBL stiffening rib one of multiple tracks (3-1) from top to bottom, the described stirrup one of multiple tracks (6-1) is parallel laying, the quantity of the described stirrup one of multiple tracks (6-1) is identical with the quantity of a plurality of described through holes one (5-1), and passes in a plurality of described through hole one (5-1) opened on every described PBL stiffening rib one (3-1) together respectively of the described stirrup one of multiple tracks (6-1); Described bottom reinforcing structure also comprises that multiple tracks is laid in the stirrup two (6-2) on the described PBL stiffening rib two of multiple tracks (3-2) from top to bottom, the described stirrup two of multiple tracks (6-2) is parallel laying, the quantity of the described stirrup two of multiple tracks (6-2) is identical with the quantity of a plurality of described through holes two (5-2), and passes in a plurality of described through hole two (5-2) opened on every described PBL stiffening rib two (3-2) together respectively of the described stirrup two of multiple tracks (6-2).

2. set up the SCS concrete pier of steel tube of dual reinforcing structure according to a kind of upper and lower end parts claimed in claim 1, it is characterized in that: the described PBL stiffening rib two of the described PBL stiffening rib one of multiple tracks (3-1) and multiple tracks (3-2) is all evenly laid along the circumferencial direction of interior steel pipe (2).

3. set up the SCS concrete pier of steel tube of dual reinforcing structure according to the described a kind of upper and lower end parts of claim 1 or 2, it is characterized in that: the external diameter of described interior steel pipe (2) is Ф 102mm～Ф 2000mm, the wall thickness of described outer steel pipe (1) and interior steel pipe (2) is 4mm～66mm, and A1 ︰ A2=1 ︰ (0.6～0.8), A1=a1+b1 wherein, the cross-sectional area that the cross-sectional area that a1 is outer steel pipe (1) and b1 are the inboard hollow bulb of outer steel pipe (1), A2=π r ²and the external diameter that r is interior steel pipe (2).

4. set up the SCS concrete pier of steel tube of dual reinforcing structure according to the described a kind of upper and lower end parts of claim 1 or 2, it is characterized in that: the quantity of the described PBL stiffening rib two of the described PBL stiffening rib one of multiple tracks (3-1) and multiple tracks (3-2) is all identical, and the described PBL stiffening rib two of multiple tracks (3-2) be laid in respectively the described PBL stiffening rib one of multiple tracks (3-1) under.

5. set up the SCS concrete pier of steel tube of dual reinforcing structure according to the described a kind of upper and lower end parts of claim 1 or 2, it is characterized in that: the cross section of described outer steel pipe (1) is circle, rectangle or regular polygon.

6. set up the SCS concrete pier of steel tube of dual reinforcing structure according to the described a kind of upper and lower end parts of claim 1 or 2, it is characterized in that: the thickness of the described PBL stiffening rib two of the described PBL stiffening rib one of multiple tracks (3-1) and multiple tracks (3-2) is d1, d1≤D wherein, the wall thickness that D is outer steel pipe (1); The wall thickness of described outer steel pipe (1) is larger, and the thickness of the described PBL stiffening rib two of the described PBL stiffening rib one of multiple tracks (3-1) and multiple tracks (3-2) is all larger.

7. set up the SCS concrete pier of steel tube of dual reinforcing structure according to the described a kind of upper and lower end parts of claim 1 or 2, it is characterized in that: described through hole one (5-1) is circular port one, and the aperture of described circular port one

the transverse width that wherein d3 is described circular port one PBL stiffening rib one of living in (3-1); Described through hole two (5-2) is circular port two, and the aperture of described circular port two the transverse width that wherein d5 is described circular port two PBL stiffening rib two of living in (3-2).

8. set up the SCS concrete pier of steel tube of dual reinforcing structure according to the described a kind of upper and lower end parts of claim 1 or 2, it is characterized in that: the longitudinal length of the described PBL stiffening rib one of multiple tracks (3-1) all identical and its longitudinal length is 1m～1.5m; The longitudinal length of the described PBL stiffening rib two of multiple tracks (3-2) all identical and its longitudinal length is 1m～1.5m.

9. set up the SCS concrete pier of steel tube of dual reinforcing structure according to the described a kind of upper and lower end parts of claim 1 or 2, it is characterized in that: the quantity of the described PBL stiffening rib two of the described PBL stiffening rib one of multiple tracks (3-1) and multiple tracks (3-2) is 4 roads～8 roads.

10. set up the SCS concrete pier of steel tube of dual reinforcing structure according to the described a kind of upper and lower end parts of claim 1 or 2, it is characterized in that: described concrete structure (4) is carbon fiber reinforced concrete.

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