CN201343794Y

CN201343794Y - Variable-thickness shear wall provided with inclined reinforcing transitional layer

Info

Publication number: CN201343794Y
Application number: CNU2008201242582U
Authority: CN
Inventors: 曹万林; 朱珩
Original assignee: Beijing University of Technology
Current assignee: Beijing University of Technology
Priority date: 2008-12-05
Filing date: 2008-12-05
Publication date: 2009-11-11
Anticipated expiration: 2018-12-05

Abstract

The utility model relates to a variable-thickness shear wall provided with an inclined reinforcing transitional layer, which comprises a general variable-thickness shear wall board and a reinforcing bar raking prop. A reinforcing mesh made of transversely distributed reinforcing bars and longitudinally distributed reinforcing bars is arranged in the general variable-thickness shear wall board; tie bars are adopted to tie the reinforcing mesh; a reinforcing bar raking prop is arranged in the thickness-changing zone of the variable-thickness shear wall board, and is fastened with the reinforcing mesh as well as the tie bars; and the reinforcing bar raking prop is X-shaped, and the upper end and the lower end thereof respectively are extended into the upper part of the general variable-thickness shear wall board and the lower part of the shear wall. Compared with the prior shear wall, the shear wall provided by the utility model has large initial stiffness at the variable cross section, high carrying capacity, slow attenuation of bearing capacity and rigidity, more shock-resistant defensive lines, good integral shock-resistant and energy consumption performance and stable post-shock-resistant performance.

Description

Band oblique reinforcing bar transition layer thickness changeable shear wall

Technical field

The utility model relates to a kind of band oblique reinforcing bar transition layer thickness changeable shear wall, belongs to the shear wall structure field.

Background technology

In current building structure, shear wall is the core antidetonation parts of building structure, is bearing the geological process of structural entity 80%.Yet the ductility of shear wall is relatively poor, has influenced giving full play to of its structural entity anti-seismic performance, particularly at shear wall variable cross-section place, occurs the shear stiffness sudden change easily, forms the anti-seismic performance that weak part influences total.Therefore, improve the ductility of transition zone variable cross-section thickness shear wall and the key technical problem that comprehensive anti-seismic performance becomes the variable cross-section shear wall.

Longitudinal reinforcement insertion bottom shear wall 1.5laE length (wherein laE is the longitudinal reinforcement antidetonation anchorage length in " Code for design of concrete structures ") in the shear wall of top is arranged in the scheme of existing transition zone variable cross-section thickness shear wall, and bottom shear wall longitudinal reinforcement then is bent inwardly into floor.The problem of its existence is: form the rigidity sudden change in the place of wall thickness sudden change, make whole shear wall shear behavior have weak link.

In the scheme of existing transition zone variable cross-section thickness shear wall, also have the elongated reinforcing bar of a kind of employing to curve inwardly, stretch into the top shear wall in transitional region.Its existing problems are that transition region exists the shearing resistance weak link, and reinforcing bar curve inwardly the part difficulty of construction big, be difficult to guarantee construction quality.

Summary of the invention

Technical problem to be solved in the utility model is to significantly improve transition zone thickness changeable shear wall shock resistance.And in order to address the above problem, the utility model has designed a kind of band oblique reinforcing bar transition layer thickness changeable shear wall, and the place disposes oblique reinforcing bar at transition zone variable cross-section thickness.

The band oblique reinforcing bar transition layer thickness changeable shear wall that the utility model adopted, the technical scheme that adopts is: be made of common thickness changeable shear wall plate and reinforcing bar bearing diagonal, dispose the steel mesh reinforcement that transversely distributed steelbar and vertical distribution reinforcement are formed in the common thickness changeable shear wall plate, socket by socketing reinforcing bar between the steel mesh reinforcement; The thick region of variation of thickness changeable shear wall board wall disposes the reinforcing bar bearing diagonal, it is characterized in that: the reinforcing bar bearing diagonal is hidden in the steel mesh reinforcement of thickness changeable shear wall plate, with the steel mesh reinforcement bind, and with socket reinforcing bar and socket; The design bearing capacity of the reinforcing bar bearing diagonal of hiding in the thickness changeable shear wall plate satisfies the requirement that strong post supports weak energy dissipation beam section by force.Along with the increase of seismic load, energy dissipating beam section at first reaches and is cut surrender in the Vierendeel girder, and all the other sections still are in the elastic force balance state.

The reinforcing bar bearing diagonal is hidden in the steel mesh reinforcement of thickness changeable shear wall plate, with the steel mesh reinforcement bind, and sockets with socketing reinforcing bar, in order to improve in concrete shear force wall varied in thickness zone energy dissipation capacity and ductility, prevents that weak location from occurring.

Described band oblique reinforcing bar transition layer thickness changeable shear wall, it is characterized in that: the reinforcing bar bearing diagonal of hiding is X-shaped, its upper end is stretched in the top shear wall of common thickness changeable shear wall plate, with the steel mesh reinforcement bind in the thickness shear wall of top, the upper end built-in length is not less than 2 times of top shear wall thickness of wall body; Reinforcing bar bearing diagonal lower end is stretched in the bottom shear wall of common thickness changeable shear wall plate, with the steel mesh reinforcement bind in the thickness shear wall of bottom, the lower end built-in length is not less than 2 times of top shear wall thickness of wall body, in order to improve transitional region thickening degree concrete shear force wall energy dissipation capacity and ductility, prevent that weak location from occurring.

The utility model is combined to form by built-in reinforcing bar bearing diagonal and common thickness changeable shear wall, forming process is the process of both additions, but combination back structure has improved the anti-seismic performance of shear wall weakness zone, has prevented the appearance of weak link, has improved the globality of total.Compare with common existing transition region variable cross-section thickness shear wall structure, the utility model supporting capacity improves, and bearing capacity and stiffness degradation are slow, and anti-seismic performance is relatively stable.

Description of drawings

Fig. 1 is the arrangement of reinforcement schematic diagram that the reinforcing bar bearing diagonal is an element of construction of shear wall when X-shaped is netted to be arranged in the utility model band oblique reinforcing bar transition layer thickness changeable shear wall;

Fig. 2 is an A-A generalized section among the utility model Fig. 1;

Among the figure: 1-reinforcing bar bearing diagonal, the 2-steel mesh reinforcement, 3-sockets reinforcing bar.

The specific embodiment

The form of structure of band oblique reinforcing bar transition layer thickness changeable shear wall as shown in Figure 1, constitute by common thickness changeable shear wall plate and reinforcing bar bearing diagonal 1, dispose the steel mesh reinforcement 2 that transversely distributed steelbar and vertical distribution reinforcement are formed in the common thickness changeable shear wall plate, socket by socketing reinforcing bar 3 between the steel mesh reinforcement 2; Two steel mesh reinforcement 2 inboards of the thick region of variation shear wall slab of thickness changeable shear wall board wall dispose X-shaped reinforcing bar bearing diagonal 1, with steel mesh reinforcement 2 binds, and with socket reinforcing bar 3 and socket.The reinforcing bar 3 of socketing that is less than or equal to 600mm with spacing between two steel mesh reinforcements 2 of shear wall links to each other.Its corresponding making step is as follows:

A) reinforcing bar of configuration frame columns;

B) reinforcing bar of configuration frame beam makes frame beam and frame columns fixed;

C) configuration in the shear wall by transversely distributed steelbar and the vertical steel mesh reinforcement 2 formed of distribution reinforcement;

D) at the transition zone variable cross-section thickness place of common thickness changeable shear wall plate configuration reinforcement bearing diagonal 1, make it become X-shaped reinforcing bar bearing diagonal 1;

E) dispose affixed reinforcing bar at reinforcing bar bearing diagonal 1 with the node place that frame columns or frame beam intersect;

F), promptly constitute band oblique reinforcing bar transition layer thickness changeable shear wall at last with the moulding of shear wall slab one piece disturbing concrete.

When step d) configuration reinforcement bearing diagonal 1, reinforcing bar bearing diagonal 1 upper end is stretched in the top shear wall of common thickness changeable shear wall plate, and its length that stretches into is not less than 2 times top shear wall thickness of wall body, and with the top shear wall in steel mesh reinforcement 2 bind mutually; Reinforcing bar bearing diagonal 1 lower end is stretched in the bottom shear wall of common thickness changeable shear wall plate, makes its built-in length be not less than 2 times top shear wall thickness of wall body, and with the bottom shear wall in steel mesh reinforcement 2 bind mutually, in antidetonation, form the power consumption section;

When step d) configuration reinforcement bearing diagonal 1, reinforcing bar bearing diagonal 1 is walked around the anchoring of frame beam, and installs stirrup outside reinforcing bar bearing diagonal 1 equably.

It should be noted that at last: above embodiment only in order to the explanation the utility model and and the described technical scheme of unrestricted the utility model; Therefore, although this manual has been described in detail the utility model with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model; And all do not break away from the technical scheme and the improvement thereof of the spirit and scope of invention, and it all should be encompassed in the middle of the claim scope of the present utility model.

Claims

1, a kind of band oblique reinforcing bar transition layer thickness changeable shear wall is to be made of common thickness changeable shear wall plate and reinforcing bar bearing diagonal, dispose the steel mesh reinforcement that transversely distributed steelbar and vertical distribution reinforcement are formed in the common thickness changeable shear wall plate, socket by socketing reinforcing bar between the steel mesh reinforcement; The thick region of variation of thickness changeable shear wall board wall disposes the reinforcing bar bearing diagonal, it is characterized in that: the reinforcing bar bearing diagonal is hidden in the steel mesh reinforcement of thickness changeable shear wall plate, with the steel mesh reinforcement bind, and with socket reinforcing bar and socket; The design bearing capacity of the reinforcing bar bearing diagonal of hiding in the thickness changeable shear wall plate satisfies the requirement that strong post supports weak energy dissipation beam section by force.

2, band oblique reinforcing bar transition layer thickness changeable shear wall according to claim 1, it is characterized in that: the reinforcing bar bearing diagonal of hiding is X-shaped, its upper end is stretched in the top shear wall of common thickness changeable shear wall plate, with the steel mesh reinforcement bind in the thickness shear wall of top, the upper end built-in length is not less than 2 times of top shear wall thickness of wall body; Reinforcing bar bearing diagonal lower end is stretched in the bottom shear wall of common thickness changeable shear wall plate, and with the steel mesh reinforcement bind in the thickness shear wall of bottom, the lower end built-in length is not less than 2 times of top shear wall thickness of wall body.