Assembling prestress orthogonal laminated wood shear wall

Abstract

The invention discloses an assembling prestress orthogonal laminated wood shear wall. The assembling prestress orthogonal laminated wood shear wall comprises bond-free prestress bars, bearing beams, CLT wall plates, slab supporting frames and limiting steel components. The two limiting steel components are connected with a base. The CLT wall plates on the lower layer tightly abut against the basethrough the bond-free prestress bars. The bearing beams on the lower layer are connected with the CLT wall plates on the lower layer. The slab supporting frames on the lower layer are connected with the CLT wall plates on the lower layer and then put on the top of the bearing beams on the lower layer. The CLT wall plates on the upper layer are connected with the two slab supporting frames on the lower layer. The bearing beams on the upper layer are connected with the CLT wall plates on the upper layer. The two bond-free prestress bars penetrate through the CLT wall plates on the upper layer and the lower layer. The CLT shear wall has high initial rigidity, high ultimate bearing capacity and a certain self-recovery characteristic under lateral loads after the bond-free prestress bars are applied, and the common damage mode of weak joints and strong components of a common CLT shear wall is avoided. The assembling prestress orthogonal laminated wood shear wall is high in assembling degree, and prestress loss caused when CLT slabs have big creep deformation under the band stress action can be reduced obviously due to the arrangement of the slab supporting frames on the lower layer.

Description

technical field [0001] The invention belongs to the field of wooden structures in structural engineering, and relates to an assembled prestressed cross laminated timber (CLT for short) shear wall. Background technique [0002] CLT material is usually used as a shear wall. Although the lateral stiffness and ultimate bearing capacity of the wall are high, the following problems are found during use: [0003] (1) Under the action of lateral load, the connection joints of ordinary CLT shear walls spliced ​​by metal connectors are prone to brittle failure caused by wood splitting; [0004] (2) Even if the design of the joint area is reasonable, the failure modes such as screw yielding or being pulled out from the plate will occur in the ordinary CLT shear wall under the lateral load, and the lateral stiffness and strength of the wall will degrade rapidly, while Most of the material strength outside the connection area is far from being fully developed. [0005] In order to impr...

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Problems solved by technology

[0003] (1) Under the action of lateral load, the connection joints of ordinary CLT shear walls spliced ​​by metal connectors are prone to brittle failure caused by wood splitting;

[0004] (2) Even if the design of the joint area is reasonable, the failure modes such as screw yielding or being pulled out from the plate will occur in the ordinary CLT shear wall under the lateral load, and the lateral stiffness and strength of the wall will degrade rapidly, while Much of the material strength outside the connection area is far from fully developed

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