空心胶合木梁柱式结构抗侧力性能研究

为研究空心胶合木梁柱式结构体系抗侧力性能,对纯框架及框架-人字撑两种单跨结构试件进行了单调及低周反复加载试验,考察了结构破坏模式、耗能能力、刚度等抗震性能。结果表明:纯框架与框架-人字撑结构均具有一定抗侧力性能,但纯框架结构承载能力较弱,不建议单独用于工程实践;框架-人字撑结构具较大抗侧刚度及承载力,分别为纯框架的6.3倍及2.68倍,但其延性仅为纯框架的67%。两种结构失效前强度退化小于30%,具足够剩余承载力。

Study on Lateral Resistance of Hollow Glulam Timber Post-beam Structure

In order to study the lateral resistance of hollow glulam timber post and beam structures,monotonic and cyclic loading tests on one-bay timber post-beam construction specimens were carried out.Their seismic performances such as failure mode,energy dissipation capacity,and stiffness were also investigated.The results showed that both pure frame and frame with herringbone-brace system have lateral resistance,while the former one was a bit weak on bearing capacity.Therefore,this structure was not recommended for engineering practice alone.The herringbone-brace exhibited good lateral resistance stiffness and bearing capacity for structure,which was 6.3 and 2.68 times higher than the pure frame,respectively.However,it has low ductility,67%of the pure frame.The strength degradation of specimens is less than 30%before the overall structural failure,demonstrating enough loading capacity.