多层强边柱冷成型钢结构体系抗震性能分析

发布时间：2018-06-12 01:05

本文选题：多层冷成型钢结构 + 方钢管混凝土强边柱　；参考：《哈尔滨工业大学学报》2017年12期

【摘要】：多层强边柱冷成型钢结构能够促进低层冷成型钢结构向多层住宅结构体系的发展.为了分析多层强边柱冷成型钢住宅结构体系在地震作用下的动力特性,本文提出了该类结构的主要抗侧构件强边柱冷成型钢组合墙体可以考虑节点实际连接性能的简化计算模型,进而得到整体结构抗震计算模型;根据作者前期开展的墙体抗剪试验结果并结合国外规范,提出此类结构在地震作用下的侧向变形验算指标;对整体结构进行抗震性能研究.结果表明:考虑节点连接的等代拉压杆模型能够准确预测此类结构的实际受力特性;将1/300和1/75分别作为此类结构在多遇和罕遇地震作用下的层间位移角限值是安全可靠的;在9度罕遇地震作用下,此类结构不会发生倒塌破坏;进行此类结构设计时,不宜采用两个方向刚度差异过大的抗剪墙体组合,同时应重点加强结构沿墙体开洞率较大方向的墙体抗剪强度;在特别高烈度地区进行此类结构设计时,应兼顾墙体抗剪强度和墙体边柱的竖向承载能力,避免结构因墙体边柱的压屈破坏而导致整体结构失效.
[Abstract]:The cold forming steel structure with multi-layer strong edge column can promote the development of low-layer cold-formed steel structure to multi-story residential structure system. In order to analyze the dynamic characteristics of cold formed steel residential structure system with multi-story strong side columns under earthquake, In this paper, a simplified calculation model of the cold-formed steel composite wall with the main anti-side members, which can consider the actual connection performance of the joints, is proposed, and the seismic calculation model of the whole structure is obtained. Based on the experimental results of wall shear tests carried out by the author and combined with the foreign codes, the checking index of lateral deformation of this kind of structures under earthquake action is put forward, and the seismic behavior of the whole structure is studied. The results show that the equivalent tension and compression bar model considering joint connection can accurately predict the actual force characteristics of this kind of structure, and that it is safe and reliable to take 1 / 300 and 1 / 75 respectively as the limit values of the interstory displacement angle of this kind of structure under the action of frequent and rare earthquakes. Under the action of 9 degrees rare earthquake, this kind of structure will not collapse and destroy. In the design of this kind of structure, it is not advisable to adopt the combination of two shear walls with excessive difference in direction stiffness. At the same time, the shear strength of the wall along the direction of high opening ratio of the wall should be strengthened, and the shear strength of the wall and the vertical bearing capacity of the side column of the wall should be taken into account in the design of this kind of structure in the high intensity area. Avoid the failure of the whole structure caused by the buckling failure of the wall side column.
【作者单位】：东南大学土木工程学院;深部岩土力学与地下工程国家重点实验室(中国矿业大学);
【基金】：国家自然科学基金(51538002)
【分类号】：TU352.11;TU392.1

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