装配式斜支撑节点钢框架抗连续倒塌能力评价

发布时间：2018-05-18 07:57

本文选题：装配式斜支撑节点钢框架 + 连续倒塌　；参考：《工业建筑》2015年10期

【摘要】：结构发生连续倒塌的机理比较复杂,国内外到目前为止没有统一的结构抗连续倒塌能力评价标准。通过3个4跨5层装配式斜支撑节点钢框架结构算例,验证了日本《高冗余度钢结构倒塌控制设计指南》中抗连续倒塌能力评价指标对装配式斜支撑节点钢框架结构的适用性。以国内湘阴远大城9层装配式斜支撑节点钢框架公寓B9为研究对象,采用拆除构件法分别拆除角柱、短边中柱、长边中柱和内中柱,采用经验证的能力评价指标进行抗连续倒塌能力评价。结果表明:9层装配式斜支撑节点钢框架结构在拆除角柱工况下,剩余结构抗连续倒塌能力最好;拆除内中柱下,剩余结构抗连续倒塌能力相对较差,桁架梁在结构抗连续倒塌分析中承载力储备要低于柱构件。
[Abstract]:The mechanism of continuous collapse of structures is quite complex, so far there is no uniform evaluation standard for the ability of structure to resist continuous collapse at home and abroad. The applicability of the evaluation index of the anti-continuous collapse ability of the Japanese guidelines for the collapse Control of High redundant Steel structures to the steel frame structures with assembled inclined braced joints is verified by three examples of steel frame structures with four spans and five stories assembled with inclined braced joints. Taking B9 steel frame apartment with 9 stories of prefabricated oblique braced joints in Xiangyin Great City as the research object, the angle column, short side column, long edge middle column and inner middle column were removed by removing component method, respectively. The ability to resist continuous collapse was evaluated by using the proven capability evaluation index. The results show that the residual structure has the best ability to resist continuous collapse under the condition of removing corner column, and the residual structure has relatively poor ability to resist continuous collapse under the removal of inner column. The bearing capacity reserve of truss beam in continuous collapse analysis is lower than that of column member.
【作者单位】：湖南大学土木工程学院钢结构研究所;中南林业科技大学土木工程与力学学院;湖南科技大学土木工程学院;
【基金】：国家自然科学基金项目(51278178) 湖南省工程建设产学研结合创新计划项目(KY201125)资助
【分类号】：TU391

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