Novel low-residual-deformation multiple-yield-point all-steel buckling restrained braces

A multi-yield-point, buckling-constrained technology, applied in the field of new low-residual-deformation-multi-yield-point all-steel buckling-constrained bracing, can solve the problem of failure to meet the repairable performance requirements of bridge structures after earthquakes, large residual deformation between structural layers, and unfavorable engineering Problems such as construction and installation can be improved to improve post-earthquake repairability, low rigidity, and low friction

CN107460965AInactive Publication Date: 2017-12-12TONGJI UNIV
5 Cites 2 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-12-12
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a novel all-steel buckling constraint support with low residual deformation and multiple yield points, which is composed of a core material, a constraint plate, a filler plate and high-strength bolts. Among them, the core material is a metal core material composed of steel with a low yield point and high-strength steel, and the filler plate and the restraint plate are connected by bolts. The core material is wrapped in the filling and restraining plate to limit the in-plane and out-of-plane deformation of the core material, so as to achieve the effect of improving the deformation capacity and cumulative plastic energy dissipation capacity of the support under hysteretic loading such as earthquakes. Secondly, the unique core material design can make the core material have multiple yield points and reduce the axial residual deformation of the core material, thereby effectively reducing the residual deformation between the structural layers and facilitating the post-earthquake repair of building structures or bridge structures. In addition, the new low residual deformation multi-yield point buckling-restrained brace has the characteristics of light weight, which can reduce its own weight, thereby reducing the seismic force of the structure. At the same time, the support stiffness is small, which is beneficial to avoid excessive burden on connected nodes and adjacent components.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a new type of low residual deformation multi-yield point all-steel buckling restraint support. The invention can be widely used in the seismic design and reinforcement reconstruction of structures such as buildings and bridges. The plastic deformation energy of the core material can absorb the input of earthquakes to the structure. energy of. The interstory residual deformation after the earthquake is very important to the repairability of the structure. The patent of the invention can effectively reduce the residual interstory deformation of the structure after the earthquake while dissipating the seismic energy, thereby not only protecting the safety of the main structure, but also greatly Improve the post-earthquake repairability of structures. Background technique

[0002] Most of the restraining members of the existing buckling-restrained braces are steel pipes filled with mortar. This type of brace is often unstable due ...

Examples

Embodiment 1

[0018] Embodiment 1: with figure 1 An example of a multi-yield-point buckling-restrained brace with low residual deformation is shown, as described in this patent. The core material is composed of a steel core material 2 with a low yield point and a high-strength steel core material 1, and is supported on the left and right sides by a restraint plate 6. The filler plate 5 and the restraint plate 6 are connected by high-strength bolts 7, and the core The timber is wrapped in the filler panel 5 and the restraint panel 6 . The assembly process is as follows: first place the core material and the constraining plate 6 on the same plane, the constraining plate 6 supports the left and right sides of the core material, and then use the high-strength bolts 7 to make the filler plate 5 cover the upper and lower sides of the core material, It is also connected with the constraining plate 6 to finally form a whole.