CN203808294U - Hollow reinforced concrete shear wall with end posts with continuous spiral stirrups - Google Patents

Abstract

The utility model relates to a hollow reinforced concrete shear wall with end posts with continuous spiral stirrups and belongs to the technical field of structural engineering. The hollow reinforced concrete shear wall comprises the continuous spiral stirrups, hollow pipe dies, a stirrup, concrete, lacing bars, the end posts, longitudinally-distributed steel bars, force bearing longitudinal bars, and a hollow concrete shear wall body, wherein reserved holes of the hollow pipe dies are embedded in the hollow reinforced concrete shear wall body; the force bearing longitudinal bars are uniformly arranged along the peripheries of the end posts; the continuous spiral stirrups are arranged on the outer sides of the force bearing longitudinal bars; the concrete is poured in the end posts and the hollow reinforced concrete shear wall body; the longitudinally-distributed steel bars, the lacing bras and the stirrup are uniformly arranged in the concrete of the hollow reinforced concrete shear wall body; the stirrup is connected with the longitudinally-distributed steel bars; the continuous spiral stirrups are connected with the force bearing longitudinal bars; the longitudinally-distributed steel bars and the stirrup are pulled by the lacing bars. The hollow reinforced concrete shear wall provided by the utility model has the advantages as follows: the project cost is reduced, the earthquake action is reduced, the ductility of a building structure is increased, the bearing capacity of the hollow reinforced concrete shear wall is improved, the seismic performance of the whole structure is improved, and the effects of energy conservation and emission reduction are better.

Description

A Hollow Reinforced Concrete Shear Wall with Continuous Spiral Stirrup End Columns

technical field

The utility model relates to a hollow reinforced concrete shear wall with continuous spiral stirrup end columns suitable for high-rise buildings, which belongs to the technical field of structural engineering.

Background technique

Reinforced concrete shear walls mainly bear horizontal loads caused by wind loads or earthquakes, and have relatively large lateral force resistance, so they are widely used in high-rise buildings in high-intensity areas. However, this kind of solid reinforced concrete wall has a large amount of concrete, high cost, heavy self-heavy, and large earthquake effect. When the wall is long and the height-to-width ratio is small, it is very prone to brittle shear failure. The ductility is poor. Due to the limited compressive deformation capacity of concrete constrained by ordinary stirrups, when the axial compression ratio is high, the concrete at both ends of the reinforced concrete wall is easy to compress and buckle, and the structure loses its bearing capacity.

In view of the shortcomings of solid reinforced concrete shear walls, such as high cost, self-heavy, and large earthquake action, hollow shear walls have appeared in recent years. Hollow shear walls remove part of the concrete inside the solid shear wall to form a vertical holes, so as to reduce the project cost, lighten the structure's self-weight, reduce the earthquake effect, and meet the requirements of "energy saving and emission reduction" in buildings. Due to the existence of vertical holes in the middle of the wall, when the wall is long and the height-to-width ratio is small, the failure mode of the hollow shear wall can change from brittle shear failure to bending failure with good ductility. The bearing capacity is relatively small, and the concrete at the end of the wall is easily crushed under high axial compression ratio, and it is difficult to resist strong earthquake action.

Aiming at the disadvantage of the poor compressive capacity of the concrete at the end of the reinforced concrete shear wall, people set steel pipes at both ends of the reinforced concrete shear wall, and designed a steel tube concrete shear wall structure. Since the CFST shear wall is in a three-dimensional compression state, it has a large compressive deformation capacity, thereby avoiding brittle failure of the wall, but the CFST shear wall has greater stiffness and self-weight, which will cause greater earthquake action, and the cost of the steel pipe Higher, in the project, it can be considered to replace the spiral stirrup column with smaller spacing, because the continuous spiral stirrup can make the core concrete receive uniform and continuous three-way compressive restraint in the lateral direction, and the effect of restraining the lateral deformation of the concrete is better , and can restrain the buckling of the longitudinal reinforcement to a certain extent, and the cost is low.

Contents of the invention

The technical problem to be solved by the utility model is: the utility model combines the advantages of the two structures of the continuous spiral stirrup column and the hollow shear wall to design three different shapes of a straight section, a T-shaped section and an L-shaped section. The hollow reinforced concrete shear wall with continuous spiral stirrup end columns meets the requirements of different parts of the project. The technical problems to be solved are to reduce the self-weight of the reinforced concrete shear wall structure, reduce the earthquake effect, increase the ductility of the building structure, Improve the bearing capacity of the hollow shear wall and improve the overall seismic performance of the building structure.

The technical scheme of the utility model is: a hollow reinforced concrete shear wall with a continuous spiral stirrup end column, including a continuous spiral stirrup 1, a hollow pipe mold 2, a stirrup 3, concrete 4, a tie bar 5, and an end column 6 , longitudinally distributed steel bars 7, stressed longitudinal bars 8, hollow reinforced concrete shear walls 9; the hollow reinforced concrete shear walls with continuous spiral stirrup end columns are composed of end columns 6 with continuous spiral stirrups at both ends of the wall It is combined with the hollow reinforced concrete shear wall 9, the hollow reinforced concrete shear wall 9 has a built-in hollow pipe form 2 to reserve holes, and the stressed longitudinal bars 8 are evenly arranged along the periphery of the end column 6, and the outer side of the stressed longitudinal bars 8 is arranged with continuous spiral The stirrup 1, the end column 6 and the hollow reinforced concrete shear wall 9 are all poured with conventional concrete 4, and the interior of the concrete 4 of the hollow reinforced concrete shear wall 9 is evenly arranged with longitudinally distributed reinforcement 7, tie bars 5, stirrups 3, stirrups 3 connect the longitudinally distributed steel bars 7, the continuous spiral stirrup 1 connects the load-bearing longitudinal bars 8, and the tie bars 5 pull the longitudinally distributed steel bars 7 and the stirrups 3 at the same time.

The cross-sectional shape of the hollow reinforced concrete shear wall with continuous spiral stirrup end columns may be inline.

The hollow reinforced concrete shear wall with continuous spiral stirrup end columns is composed of end columns 6 with continuous spiral stirrups at both ends of the wall, and a hollow reinforced concrete shear wall 9 formed by holes reserved inside the wall. At the junction with the longitudinal wall, three large parts are added, a concealed column 10 composed of ordinary stirrups 3 and stressed longitudinal reinforcements 8, and its cross-sectional shape is T-shaped.

The cross-section shape of the hollow reinforced concrete shear wall with continuous spiral stirrup end columns may be L-shaped.

The continuous spiral stirrup 1 can effectively restrain the lateral deformation of the concrete, restrain the buckling of the longitudinal reinforcement, increase the bearing capacity of the hollow shear wall, and improve the overall seismic performance of the building structure. The hollow reinforced concrete shear wall 9 formed by the built-in hollow pipe form 2 can greatly reduce the self-weight of the structure and reduce the earthquake action, and the hollow shear wall mainly suffers from bending failure and has good ductility.

The hollow reinforced concrete shear wall with continuous spiral stirrup end column is an advantageous combination of continuous spiral stirrup column and hollow shear wall. The specific advantages are as follows:

First, before pouring the reinforced concrete shear wall, use PVC pipes or cheap hard paper tubes or hollow pipe molds made of non-polluting industrial waste to reserve holes in the middle of the shear wall where the force is less. Hollow shear walls are formed to reduce the self-weight of the structure, reduce the rigidity of the structure, and reduce the earthquake effect;

Second, there is a hollow hole in the middle of the reinforced concrete shear wall, which has a good thermal insulation effect;

Thirdly, the end columns 6 composed of continuous spiral stirrups 1 are arranged inside the two ends of the hollow shear wall where the stress is relatively large, and the continuous spiral stirrups 1 are used to apply lateral uniform and continuous three-dimensional stress to the core concrete in the stirrups. The axial compressive restraint force can effectively restrain the lateral deformation of concrete, inhibit the buckling of longitudinal reinforcement, and significantly improve the compressive deformation resistance of concrete at both ends of the hollow shear wall, thereby increasing its bearing capacity and improving the overall seismic performance of the structure.

The manufacturing process of the present utility model is: the first, the making of the reinforcement skeleton of the hollow reinforced concrete shear wall 9 of the hollow reinforced concrete shear wall of the band continuous spiral stirrup end column of inline cross section, T shape cross section, L shape cross section : along the length direction of the hollow reinforced concrete shear wall 9, the longitudinally distributed reinforcing bars 7 are evenly arranged, the stirrups 3 are connected to the longitudinally distributed reinforcing bars 7, and the tie bars 5 simultaneously hold the longitudinally distributed reinforcing bars 7 and the stirrups 3;

Second, the production of the reserved holes of the hollow reinforced concrete shear wall with the continuous spiral stirrup end column of the straight section, T-shaped section and L-shaped section: the built-in hollow pipe form 2 in the middle of the wall forms the reserved hole, Hollow pipe mold 2 is made of PVC pipe or cheap hard paper pipe or non-polluting industrial waste;

Thirdly, for the hollow reinforced concrete shear wall with continuous spiral stirrup end column of inline cross-section, the arrangement of the reinforcement skeleton of end column 6 is carried out: the stressed longitudinal reinforcement 8 is evenly arranged along the periphery of end column 6, and the stressed longitudinal reinforcement 8 The continuous spiral stirrup 1 is arranged on the outside, and the tie bar 5 is not arranged on the end column 6;

Fourth, for the hollow reinforced concrete shear walls with continuous spiral stirrup end columns of T-shaped and L-shaped sections, the arrangement of the steel skeleton of the end column 6 and the concealed column 10 is carried out: the force is evenly arranged along the periphery of the end column 6 Longitudinal bars 8, continuous spiral stirrups 1 are arranged on the outer side of the stressed longitudinal bars 8; the stressed longitudinal bars 8 and stirrups 3 are arranged at the junction of the transverse wall and the longitudinal wall to form the steel skeleton of the concealed column 10;

The 5th, the concreting of the hollow reinforced concrete shear wall concrete with continuous spiral stirrup end column of straight section, T-shaped section, L-shaped section: adopt conventional concrete 4 to vibrate and compact outside the hollow pipe mold 2, and immediately after forming The hollow reinforced concrete shear walls with continuous spiral stirrup end columns respectively become straight section, T-shaped section and L-shaped section. The hollow pipe form 2 can be left inside the wall without taking it out.

The beneficial effects of the utility model are: the use of the hollow reinforced concrete shear wall with continuous spiral stirrup end columns can reduce the construction cost, reduce the earthquake action, increase the ductility of the building structure, increase the bearing capacity of the hollow shear wall, and improve the overall structure Anti-seismic performance, and the effect of energy saving and emission reduction is better.

Description of drawings

Fig. 1 is a schematic diagram of reinforcement of a shear wall with a straight section of the utility model;

Fig. 2 is a schematic diagram of reinforcement of a shear wall with a T-shaped section of the present invention;

Fig. 3 is a schematic diagram of reinforcement of a shear wall with an L-shaped section of the present invention.

Each label in Figure 1-3: 1-continuous spiral stirrup, 2-hollow pipe mold, 3-stirrup, 4-concrete, 5-tension bar, 6-end column, 7-longitudinal distribution reinforcement, 8-stress Longitudinal bars, 9-hollow reinforced concrete shear walls, 10-concealed columns.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described further.

Embodiment 1: as shown in Figure 1, a kind of hollow reinforced concrete shear wall with continuous spiral stirrup end column, comprises continuous spiral stirrup 1, hollow pipe mold 2, stirrup 3, concrete 4, tie bar 5, End columns 6, longitudinally distributed steel bars 7, stressed longitudinal bars 8, and hollow reinforced concrete shear walls 9; the hollow reinforced concrete shear walls with continuous spiral stirrup end columns are composed of continuous spiral stirrups at both ends of the wall The end column 6 and the hollow reinforced concrete shear wall 9 are combined. The hollow reinforced concrete shear wall 9 has a built-in hollow pipe form 2 to reserve holes, and the stressed longitudinal bars 8 are evenly arranged along the periphery of the end column 6, and the outer sides of the stressed longitudinal bars 8 are Arrange continuous spiral stirrups 1, pour conventional concrete 4 inside the end columns 6 and hollow reinforced concrete shear walls 9, and uniformly arrange vertically distributed steel bars 7, tie bars 5, and stirrups 3 inside the concrete 4 of the hollow reinforced concrete shear walls 9 , the stirrup 3 is connected to the longitudinally distributed reinforcement 7, the continuous spiral stirrup 1 is connected to the load-bearing longitudinal reinforcement 8, and the tie bar 5 simultaneously pulls the longitudinally distributed reinforcement 7 and the stirrup 3.

The cross-section shape of the hollow reinforced concrete shear wall with continuous spiral stirrup end columns is inline.

Embodiment 2: as shown in Figure 2, a kind of hollow reinforced concrete shear wall with continuous spiral stirrup end column, comprises continuous spiral stirrup 1, hollow pipe mold 2, stirrup 3, concrete 4, tie bar 5, End columns 6, longitudinally distributed steel bars 7, stressed longitudinal bars 8, and hollow reinforced concrete shear walls 9; the hollow reinforced concrete shear walls with continuous spiral stirrup end columns are composed of continuous spiral stirrups at both ends of the wall The end column 6 and the hollow reinforced concrete shear wall 9 are combined. The hollow reinforced concrete shear wall 9 has a built-in hollow pipe form 2 to reserve holes, and the stressed longitudinal bars 8 are evenly arranged along the periphery of the end column 6, and the outer sides of the stressed longitudinal bars 8 are Arrange continuous spiral stirrups 1, pour conventional concrete 4 inside the end columns 6 and hollow reinforced concrete shear walls 9, and uniformly arrange longitudinally distributed steel bars 7, tie bars 5, and stirrups 3 inside the concrete 4 of the hollow reinforced concrete shear walls 9 , the stirrup 3 is connected to the longitudinally distributed reinforcement 7, the continuous spiral stirrup 1 is connected to the load-bearing longitudinal reinforcement 8, and the tie bar 5 simultaneously pulls the longitudinally distributed reinforcement 7 and the stirrup 3.

The hollow reinforced concrete shear wall with continuous spiral stirrup end columns is composed of end columns 6 with continuous spiral stirrups at both ends of the wall, and a hollow reinforced concrete shear wall 9 formed by holes reserved inside the wall. At the junction with the longitudinal wall, three large parts are added, a concealed column 10 composed of ordinary stirrups 3 and stressed longitudinal reinforcements 8, and its cross-sectional shape is T-shaped.

Embodiment 3: as shown in Figure 3, a kind of hollow reinforced concrete shear wall with continuous spiral stirrup end column, comprises continuous spiral stirrup 1, hollow pipe mold 2, stirrup 3, concrete 4, tie bar 5, End columns 6, longitudinally distributed steel bars 7, stressed longitudinal bars 8, hollow reinforced concrete shear walls 9; the hollow reinforced concrete shear walls with continuous spiral stirrup end columns consist of continuous spiral stirrups at both ends of the wall The end column 6 and the hollow reinforced concrete shear wall 9 are combined. The hollow reinforced concrete shear wall 9 has a built-in hollow pipe form 2 to reserve holes, and the stressed longitudinal bars 8 are evenly arranged along the periphery of the end column 6, and the outer sides of the stressed longitudinal bars 8 are Arrange continuous spiral stirrups 1, pour conventional concrete 4 inside the end columns 6 and hollow reinforced concrete shear walls 9, and uniformly arrange vertically distributed steel bars 7, tie bars 5, and stirrups 3 inside the concrete 4 of the hollow reinforced concrete shear walls 9 , the stirrup 3 is connected to the longitudinally distributed reinforcement 7, the continuous spiral stirrup 1 is connected to the load-bearing longitudinal reinforcement 8, and the tie bar 5 simultaneously pulls the longitudinally distributed reinforcement 7 and the stirrup 3.

The hollow reinforced concrete shear wall with continuous spiral stirrup end columns is composed of end columns 6 with continuous spiral stirrups at both ends of the wall, and a hollow reinforced concrete shear wall 9 formed by holes reserved inside the wall. At the junction with the longitudinal wall, three large parts are added, a concealed column 10 composed of ordinary stirrups 3 and stressed longitudinal reinforcements 8, and its cross-sectional shape is L-shaped.

The specific embodiments of the utility model have been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned embodiments. Various changes are made.

Claims (4)

1. A hollow reinforced concrete shear wall with continuous spiral stirrup end columns, characterized in that it includes continuous spiral stirrups (1), hollow pipe formwork (2), stirrups (3), concrete (4), Tie bars (5), end columns (6), longitudinally distributed steel bars (7), stressed longitudinal bars (8), hollow reinforced concrete shear walls (9); the hollow reinforced concrete end columns with continuous spiral stirrups The shear wall is composed of an end column (6) with continuous spiral stirrups at both ends of the wall and a hollow reinforced concrete shear wall (9). The hollow reinforced concrete shear wall (9) has a built-in hollow pipe formwork (2) Holes are left, and the stressed longitudinal reinforcement (8) is evenly arranged along the periphery of the end column (6), and the continuous spiral stirrup (1) is arranged outside the stressed longitudinal reinforcement (8), the end column (6) and the hollow reinforced concrete shear wall ( 9) Concrete (4) is uniformly poured inside, and the concrete (4) of the hollow reinforced concrete shear wall (9) is uniformly arranged with longitudinally distributed steel bars (7), tie bars (5), stirrup bars (3), and stirrup bars ( 3) Connect the longitudinally distributed steel bars (7), the continuous spiral stirrups (1) connect the stressed longitudinal bars (8), and the tie bars (5) pull the longitudinally distributed steel bars (7) and stirrups (3) at the same time. 2. The hollow reinforced concrete shear wall with continuous spiral stirrup end columns according to claim 1, characterized in that: the hollow reinforced concrete shear wall with continuous spiral stirrup end columns has a straight section shape. 3. The hollow reinforced concrete shear wall with the continuous spiral hoop end column according to claim 1, wherein the hollow reinforced concrete shear wall with the continuous spiral hoop end column is composed of two continuous strips at both ends of the wall. The end column of the spiral stirrup (6), the hollow reinforced concrete shear wall (9) formed by the reserved hole inside the wall, and the ordinary stirrup (3) and the stressed longitudinal reinforcement at the junction of the transverse wall and the longitudinal wall (8) Concealed column (10) is composed of three large parts, and its cross-sectional shape is T-shaped. 4. The hollow reinforced concrete shear wall with continuous spiral stirrup end columns according to claim 3, characterized in that: the hollow reinforced concrete shear wall with continuous spiral stirrup end columns has an L-shaped section shape.