SEISMIC PERFORMANCE OF SCHOOL GYMNASIA WITH STEEL ROOFS SUPPORTED BY CANTILEVERED RC WALL FRAMES
SEISMIC PERFORMANCE OF SCHOOL GYMNASIA WITH STEEL ROOFS SUPPORTED BY CANTILEVERED RC WALL FRAMES
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悬臂式钢筋混凝土墙框架钢屋顶学校体育馆的抗震性能
DOI：
10.3130/aijs.78.1895
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
R. Matsui
中科院分区：
文献类型：
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作者：
Kazuhiko Narita;T. Takeuchi;R. Matsui
在2011年东北大地震中，许多学校体育馆不仅受到海啸的破坏，还受到随之而来的震动的影响。在钢筋混凝土框架支撑的钢屋面体育馆中，最典型的破坏之一是钢屋面支座与钢筋混凝土框架的锚固连接失效。不仅在老化的结构中观察到了这种故障，而且在最近设计的体育馆中也观察到了这种故障，这意味着迫切需要进一步的指导方针。然而，由于钢屋面和悬挑混凝土墙之间复杂的反应特性，评估这些节点的反力并不容易。本文采用2011年地震中体育馆实际损毁的分析模型，对钢筋混凝土悬挑墙支承钢屋盖的作用进行了研究。根据观测到的损伤对分析结果进行了评估，讨论了钢筋混凝土悬挑墙的反应特性，并提出了这些节点的简化设计方法。
At 2011 Tohoku Earthquake, many school gymnasia suffered damages owing to not only Tsunami but the consequent shake. One of the most typical damages observed in steel roof gymnasia supported by RC frame are failures at the anchored connections of Steel roof bearings to RC frames. Such failures were observed in not only aged structure but recently designed gymnasia, which mean that further guideline is strongly required. However, evaluation of reaction forces at these connections is not easy because of complicated response characteristics between steel roofs and cantilevered concrete walls. In this paper, the action of cantilevered RC walls supporting steel roofs is researched using analytical model of actual damaged gymnasium in 2011 earthquake. The obtained analytical results are evaluated on the observed damages, and response characteristics of cantilevered RC walls are discussed, followed by proposal of easy design methods for these connections.