有翼缘和竖向荷载的带洞口木框架剪力墙的试验研究  

Performance of perforated wood-frame shear walls with transverse walls and vertical load

作　　者：程海江[1] 倪春 吕西林[1] 

机构地区：[1]同济大学,上海200092 [2]Forintek Canada Corp.VancouverB.C.

出　　处：《土木工程学报》2006年第12期33-40,47,共9页China Civil Engineering Journal

摘　　要：轻型木结构房屋在我国尚处于发展阶段,木框架剪力墙试验的目的是为我国轻型木结构房屋的推广和规范的修订提供理论和试验依据。木框架剪力墙是轻型木结构房屋中的主要抗侧力构件,研究木剪力墙的力学性能和黏滞阻尼特性是木结构房屋整体分析的基础。通过6片2.4m高6.0m长的无墙角锚栓的传统木框架剪力墙的单向和反复荷载试验,研究了竖向荷载、翼缘墙体和洞口尺寸对剪力墙的抗剪强度、弹性抗侧刚度、极限位移、墙骨柱上拔和耗能等的影响。结果表明,作用于横墙上的竖向荷载可以显著地提高剪力墙的各项性能,作用于翼缘墙体上的竖向荷载可以降低端部墙骨柱的上拔和部分提高剪力墙的抗剪强度和耗能,洞口尺寸的变化主要影响到墙体的极限位移。试件的破坏形态主要是钉节点的破坏和端部墙骨柱的上拔。Light wood-frame structures are currently being developed in China. The purposes of the wood-frame shear wall tests are to promote the application of light wood-frame structures in China and to provide technical supports for the revision of China＇s wood design codes. In this connection, six shear walls were tested under monotonic and cyclic loads, respectively, and the effects of the opening size, vertical load and flange wall on the strength, stiffness, ultimate displacement, stud lift and energy dissipation of the shear walls were studied. Test results indicate that the structural performance of the shear walls can be significantly improved due to the vertical load on the top of the shear walls, while the improvement due to the vertical load on the flange walls is slight. Different opening sizes have a direct impact on the ultimate displacement of the shear walls. Failure of the shear walls are mainly in the mode of nail connection failure and uplift of end studs.

关 键 词：木结构 轻型木结构房屋 木框架剪力墙 反复荷载试验 钉连接 

分 类 号：TU366.2[建筑科学—结构工程]