CN218479046U - Steel shell concrete bridge tower - Google Patents

Abstract

The utility model relates to a steel shell concrete bridge tower. Concrete bridge towers constructed in a plateau environment are prone to cracking, and the site workload is heavy. The steel-shell concrete bridge tower of the utility model includes two tower columns, and the tower columns are composed of several steel-shell concrete sections vertically spliced together, and the steel-shell concrete sections include a steel shell and concrete inside the steel shell. The steel shell structure of the utility model is assembled and spliced in the factory, and the site is hoisted and welded as a whole, which reduces the workload of on-site operations on the plateau, saves manpower, and improves labor efficiency; the outer wall steel plate and the inner wall steel plate of the steel shell structure Produce a hoop effect, improve the concrete compressive strength, and reduce the structure size of the bridge tower. The outer steel plate protects the concrete in the inner cavity, reduces concrete damage and prolongs the service life of the structure. Compared with the concrete bridge tower, the steel shell concrete bridge tower of the utility model overcomes the problem of cracking, has a wider application range, and is more suitable for the harsh environment of plateaus.

Description

steel shell concrete bridge tower

technical field

The utility model relates to the technical field of bridge structure construction, in particular to a steel shell concrete bridge tower.

Background technique

The bridge tower is the main load-bearing structure of the cable-stayed bridge and the suspension bridge. In the existing construction practice, the more commonly used bridge tower form is the concrete bridge tower. The Sichuan-Tibet Railway is located in a high-altitude area in the west, and the unfavorable environmental conditions include strong solar radiation, sudden changes in ambient temperature, and strong winds. The distribution becomes complicated, and the surface of the bridge pylon is easily cracked, which accelerates the carbonation of the concrete and the corrosion of the internal steel bars, reducing the durability of the structure throughout its life; on the other hand, the concrete bridge pylons need to bind steel bars and pour concrete on site, and the workload is heavy , requires a lot of manual operations, and in high-altitude areas, the labor force is tight, and heavy manual operations are very difficult and inefficient, and the construction period will be extended.

Therefore, it is necessary to design a bridge tower structure suitable for the plateau environment, solve the problem that the concrete bridge tower in the plateau environment is easy to crack, reduce the workload on the plateau site, and ensure the construction quality and construction progress.

Contents of the invention

The purpose of the utility model is to provide a steel shell concrete bridge tower to solve the problems of easy cracking of the concrete bridge tower in the plateau environment and heavy workload on site.

In order to achieve the above object, the technical solution adopted in the utility model is:

A steel-shell concrete bridge tower, the steel-shell concrete bridge tower includes two tower columns, the tower columns are composed of several steel-shell concrete segments vertically spliced, and the steel-shell concrete segments include a steel shell and a steel shell concrete inside.

Further, the steel shell is ring-shaped and includes two layers of steel plates on the outer periphery and the inner periphery, which are outer wall steel plates and inner wall steel plates respectively, and there is a shell cavity between the outer wall steel plates and the inner wall steel plates;

The concrete is poured in the shell cavity between the outer wall steel plate and the inner wall steel plate.

Further, the inner side of the outer wall steel plate is provided with an outer transverse stiffener perpendicular to the outer wall steel plate;

An inner transverse stiffener perpendicular to the inner wall steel plate is arranged on the inner side of the inner wall steel plate.

Further, the outer transverse stiffeners and the inner transverse stiffeners are ring-shaped and correspond transversely;

The outer transverse stiffeners and the inner transverse stiffeners are fixedly connected by connecting angle steel.

Further, the outer transverse stiffener and the inner transverse stiffener are provided with vertical through holes, and vertical steel bars are inserted into the through holes.

Further, the inner side of the outer wall steel plate is provided with an outer vertical stiffener perpendicular to the outer wall steel plate;

The inner side of the inner wall steel plate is provided with an inner vertical stiffener perpendicular to the inner wall steel plate.

Further, several steel-shell concrete segments are spliced vertically, and the several steel-shell concrete segments are spliced into the tower column by welding adjacent steel shells.

Further, a pylon beam is arranged between the two pylons, and the pylon beam adopts a box-section steel structure and is connected to the pylons by welding.

Compared with the prior art, the beneficial effects of the utility model are as follows:

The steel-shell concrete bridge tower provided by the utility model has its steel shell structure assembled and spliced in the factory, and the site is hoisted and welded as a whole, which reduces the workload of on-site operations on plateaus, saves manpower, and improves labor efficiency.

In addition, the outer wall steel plate and inner wall steel plate of the steel shell structure have a hoop effect on the concrete, which improves the compressive strength of the concrete and reduces the structural size of the bridge tower. The outer steel plate protects the concrete in the inner cavity, reduces concrete damage and prolongs the service life of the structure. Compared with the concrete bridge tower, the steel shell concrete bridge tower of the utility model overcomes the problem of cracking, has a wider application range, and is more suitable for the harsh environment of plateaus.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain the drawings of other embodiments according to these drawings without creative work.

Figure 1 is the elevation view of the steel shell concrete bridge tower.

Figure 2 is a horizontal section view of a steel shell concrete segment.

Figure 3 is a vertical sectional view of the tower column.

Identified in the figure as:

1-steel shell concrete segment, 2-outer wall steel plate, 3-inner wall steel plate, 41-outer transverse stiffener, 42-inner transverse stiffener, 51-outer vertical stiffener, 52-inner vertical stiffener, 6- The connection is angle steel, 7-steel bar, 8-concrete, 9-tower column, 10-tower beam.

Detailed ways

In order to facilitate the understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. Preferred embodiments of the utility model are provided in the accompanying drawings. However, the invention may be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model more thorough and comprehensive.

In the description of this patent, it should be understood that the orientation or positional relationship indicated by the terms "vertical", "transverse", "horizontal", "inner", "outer" etc. is based on the orientation or position shown in the drawings The relationship is only for the convenience of describing this patent and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of this patent.

In the description of this patent, it should be noted that, unless otherwise clearly stipulated and limited, the terms "connection", "arrangement", etc. should be understood in a broad sense, for example, it can be a fixed connection, an arrangement, or a detachable connection , set, or connect and set integrally. Those of ordinary skill in the art can understand the specific meanings of the above terms in this patent according to specific situations.

In the specific embodiment, the direction in the horizontal plane is defined as the horizontal direction, and the direction perpendicular to the horizontal plane is defined as the vertical direction. In the steel shell, the inner wall between the outer wall steel plate 2 and the inner wall steel plate 3 is defined as the inner side, and the other parts are defined as the outer side.

As shown in Fig. 1, the present embodiment provides a steel shell concrete bridge tower, which is obviously different from the current concrete bridge tower. The section 1 is vertically spliced, and the steel shell concrete section 1 includes the steel shell and the concrete 8 inside the steel shell.

As shown in Fig. 2 , the steel shell is ring-shaped and includes two layers of steel plates on the outer and inner circumferences, which are the outer wall steel plate 2 and the inner wall steel plate 3 respectively, and the shell cavity is between the outer wall steel plate 2 and the inner wall steel plate 3 . The steel shell in Fig. 2 is in the form of a square ring, and in other embodiments, it can also be designed in other shapes according to actual needs. Concrete 8 is poured in the shell cavity between the outer wall steel plate 2 and the inner wall steel plate 3 to form a steel shell concrete structure.

A reinforced structure is provided in the steel shell concrete segment 1 . As shown in Figures 2 and 3, the inner side of the outer wall steel plate 2 is provided with an outer transverse stiffener 41 perpendicular to the outer wall steel plate 2, which is fixed by welding; the inner side of the inner wall steel plate 3 is provided with an inner transverse stiffener 42 perpendicular to the inner wall steel plate 3. The welding method is fixed. Both the outer transverse stiffeners 41 and the inner transverse stiffeners 42 are ring-shaped and correspond to each other in the transverse direction. The outer transverse stiffeners 41 and the inner transverse stiffeners 42 are fixedly connected by the connecting angle steel 6, and the connecting angle steel 6 is radially arranged. Connection by welding. The outer transverse stiffener 41 and the inner transverse stiffener 42 are arranged together along the pylon height direction of 50cm. In addition, the inner side of the outer wall steel plate 2 is provided with an outer vertical stiffener 51 perpendicular to the outer wall steel plate 2, and the inner side of the inner wall steel plate 3 is provided with an inner vertical stiffener 52 perpendicular to the inner wall steel plate 3, which further strengthens the rigidity and stability.

As shown in Fig. 2, both the outer transverse stiffener 41 and the inner transverse stiffener 42 are provided with vertical through holes, and vertical steel bars are penetrated in the through holes, and the concrete 8 is poured together therein. In some embodiments, the outer transverse stiffener 41 and the inner transverse stiffener 42 are respectively provided with an outer vertical stiffener 51 and an inner vertical stiffener 52 for passing through the outer vertical stiffener 51 and the inner vertical stiffener. Stiffener 52 .

Several steel-shell concrete segments 1 are spliced vertically, and the several steel-shell concrete segments 1 are spliced into a tower column 9 by welding adjacent steel shells. The vertical height of each steel shell concrete segment 1 may be 5.0 m.

A bridge pylon beam 10 is arranged between the two tower columns 9, and the bridge tower beam 10 adopts a box-shaped steel structure, which is connected with the tower column 9 by welding, as shown in Figure 1. According to actual engineering needs, the bridge tower beam 10 can be arranged at two The top and the middle between the first pylons 9 can also increase the quantity as required.

The construction process of the present utility model is:

1. Weld the outer vertical stiffener 51 and the outer transverse stiffener 41 to the outer wall steel plate 2 .

2. Weld the inner vertical stiffener 52 and the inner transverse stiffener 42 to the inner wall steel plate 3 .

3. The outer wall steel plate 2 is placed on the outer side of the inner wall steel plate 3 to form a steel shell structure similar to a double-wall steel cofferdam, and the connection is welded by the angle steel 6 and the transverse stiffeners on the outer wall steel plate 2 and the inner wall steel plate 3 .

4. Pass the steel bars 7 through the transverse stiffeners to form a steel shell structure.

5. Lift the steel shell structure to the bridge tower, and pour concrete inside the cavity to form a steel shell concrete segment.

6. Repeat the above 5 steps, each steel shell concrete segment is accumulated through vertical welding to form the entire bridge tower.

7. Set bridge beams between bridge towers.

The steel shell concrete bridge tower of the utility model processes the steel shell structure in the factory, transports it to the construction site for hoisting and splicing, and then pours the internal concrete, which reduces the workload of on-site operations, saves labor, and can realize rapid construction. It is especially suitable for difficult manual operations. At the same time, the outer and inner steel plates have a protective effect and a hoop effect on the concrete, reducing concrete defects, prolonging the service life of the concrete structure, increasing the compressive strength of the concrete, and reducing the structural size of the bridge tower.

The above uses specific examples to illustrate the utility model, which is only used to help understand the utility model, and is not intended to limit the utility model. For those skilled in the technical field to which the utility model belongs, some simple deduction, deformation or replacement can also be made according to the idea of the utility model.

Claims (8)

1. A steel-shell concrete bridge tower is characterized in that:

the steel shell concrete bridge tower comprises two tower columns (9), wherein each tower column (9) is formed by vertically splicing a plurality of steel shell concrete sections (1), and each steel shell concrete section (1) comprises a steel shell and concrete (8) in the steel shell.

2. A steel shell concrete bridge tower according to claim 1, wherein:

the steel shell is annular and comprises two layers of steel plates of the outer periphery and the inner periphery, namely an outer wall steel plate (2) and an inner wall steel plate (3), and a shell cavity is formed between the outer wall steel plate (2) and the inner wall steel plate (3);

and the concrete (8) is poured in a shell cavity between the outer wall steel plate (2) and the inner wall steel plate (3).

3. A steel shell concrete bridge tower according to claim 2, wherein:

the inner side of the outer wall steel plate (2) is provided with an outer transverse stiffening rib (41) which is vertical to the outer wall steel plate (2);

and the inner side of the inner wall steel plate (3) is provided with an inner transverse stiffening rib (42) which is vertical to the inner wall steel plate (3).

4. A steel shell concrete bridge tower according to claim 3, wherein:

the outer transverse stiffening rib (41) and the inner transverse stiffening rib (42) are annular and transversely correspond to each other;

the outer transverse stiffening rib (41) and the inner transverse stiffening rib (42) are fixedly connected through a connecting system angle steel (6).

5. A steel shell concrete bridge tower according to claim 4, wherein:

vertical through holes are formed in the outer transverse stiffening rib (41) and the inner transverse stiffening rib (42), and vertical steel bars penetrate through the through holes.

6. A steel shell concrete bridge tower according to claim 5, wherein:

the inner side of the outer wall steel plate (2) is provided with an outer vertical stiffening rib (51) which is vertical to the outer wall steel plate (2);

and inner vertical stiffening ribs (52) which are vertical to the inner wall steel plates (3) are arranged on the inner sides of the inner wall steel plates (3).

7. A steel shell concrete bridge tower according to claim 6, wherein:

the steel shell concrete segments (1) are vertically spliced, and the adjacent steel shells are welded to splice the steel shell concrete segments (1) into the tower column (9).

8. A steel shell concrete bridge tower according to claim 7, wherein:

a bridge tower cross beam (10) is arranged between the two tower columns (9), and the bridge tower cross beam (10) is of a box-shaped section steel structure and is connected with the tower columns (9) through welding.

Images