Seismic Load Tests on Two-Story Waffle–Flat-Plate Structure
Seismic Load Tests on Two-Story Waffle–Flat-Plate Structure
复制标题
两层华夫平板结构的地震荷载试验
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
R. Meli
中科院分区：
文献类型：
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作者：
Mario E. Rodriguez;Sergio A. Santiago;R. Meli
对一个两层密肋壁板混凝土模型结构进行了模拟强震的低周反复荷载试验。测试结构是一个三分之一比例的模型，代表了墨西哥城常见的结构系统，在1985年墨西哥地震中损坏率很高。结构设计采用宽间距柱横向配筋，柱周围的板实心封头采用闭合箍筋。破坏时，试件表现出严重的弯曲和剪切损伤的列，和大的弯曲困扰的格子板。该结构具有较低的侧向刚度，这是高估了目前的建筑规范规定。结果还表明，试件具有相对较低的耗能能力和位移延性能力，这通常与强震时的抗震性能差有关。本文认为，只有通过增加支撑或结构墙，才能在抗侧刚度和强度方面获得满意的抗震性能。
A two-story waffle–flat-plate reinforced-concrete model structure was subjected to cyclic loading simulating a severe earthquake. The test structure was a one-third-scale model that represented a structural system that is common in Mexico City and that had a high rate of damage during the 1985 Mexico Earthquake. The structure was designed with widely spaced column transverse reinforcement and with closed stirrups in the slab solid heads around the columns. At failure, the specimen showed severe flexural and shear damage in columns, and large flexural distress in waffle slabs. The structure had a low lateral stiffness, which is overestimated by current building code provisions. Results also demonstrated that the specimen had relatively low energy-dissipation and displacement-ductility capacities, which are commonly associated with poor seismic behavior during strong earthquakes. It is considered that a satisfactory seismic behavior in terms of lateral stiffness and strength can only be attained by the addition of bracing or structural walls.