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首页> 外文期刊>Wood and Fiber Science >Seismic performance testing of partially and fully anchored wood-frame shear walls.
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Seismic performance testing of partially and fully anchored wood-frame shear walls.

机译：部分和完全锚固的木结构剪力墙的抗震性能测试。

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摘要

Earthquake performance of wood-frame shear walls was evaluated by comparing fully and partially anchored walls under monotonic, cyclic, and earthquake loads and comparing with code measures. Suitability of monotonic and cyclic testing to predict seismic performance was examined. Earthquake tests were conducted on 2440-mm-square walls with Douglas-fir studs. Two oriented strandboard panels were fastened to the frame with two gypsum wallboard panels on the opposite side. Partially anchored walls had two anchor bolts on the sill plate. Fully anchored walls had hold-downs at the ends. Four time histories were tested: three subduction zone ground motions and a strike-slip fault, all scaled to the Seattle design level. For fully anchored walls, subduction zone tests had capacities, energy dissipation, and failure modes most similar to cyclic tests. Wall displacement at maximum load was under-estimated by cyclic and overestimated by monotonic tests. For partially anchored walls, subduction zone and strike-slip earthquake tests had capacity, displacement at maximum load, initial stiffness, and ductility most similar to cyclic tests. Energy dissipation was most similar to monotonic tests, and failure modes were consistent with monotonic and cyclic tests. Partially anchored walls had lower capacity, displacement at maximum load, energy dissipation, and stiffness as compared with fully anchored walls.
机译：木结构剪力墙的抗震性能通过比较单调，周期性和地震荷载下的全部和部分锚固墙的抗震性能，并与规范措施进行比较。检查了单调和循环测试预测地震性能的适用性。地震测试是在2440平方毫米的墙壁上使用道格拉斯冷杉螺柱进行的。将两个定向的刨花板面板固定在框架上，并在相对的一侧使用两个石膏墙板面板。部分锚固的墙在门槛板上有两个地脚螺栓。完全锚定的墙的末端有压紧物。测试了四个时间历史记录：三个俯冲带地震动和走滑断层，都按西雅图设计水平进行了缩放。对于完全锚固的墙，俯冲带测试的能力，能量耗散和破坏模式与循环测试最相似。在最大载荷下的墙位移被周期性地低估，而单调性测试则被高估。对于部分锚固的墙，俯冲带和走滑地震测试的能力，最大载荷下的位移，初始刚度和延性与循环测试最相似。能量耗散与单调测试最相似，并且失效模式与单调和循环测试一致。与完全锚固的墙相比，部分锚固的墙具有较低的承载能力，最大负载下的位移，能量耗散和刚度。

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