济南东站鞍形拱屋盖设计及抗连续倒塌分析  

Design and Continuous Collapse Resistance Analysis of Saddle Arch Roof of Jinan East Railway Station

作　　者：赵光伟 Zhao Guangwei(Architectural Institute,China Railway Design Corporation,Tianjin 300251,China)

机构地区：[1]中国铁路设计集团有限公司建筑院,天津300251

出　　处：《铁道技术标准（中英文）》2023年第5期21-28,共8页Railway Technical Standard(Chinese & English)

基　　金：中国国家铁路集团有限公司科技研究开发计划(P2018G049)。

摘　　要：针对一站房屋盖,考虑多种失效工况,运用拆除构件法进行了设定工况下的结构抗连续倒塌的动力分析。确定了结构屋盖的重要构件,给出了构件破坏判断标准,分析在关键构件失效瞬间结构的应力比和变形能否满足设计要求。结果表明:在单支座失效工况下,该屋盖未发生局部破坏;边双支座失效情况下,支座所在拱发生破坏,相邻拱有局部破坏,整体结构未发生破坏,破坏仍限制在局部范围,不会造成整体结构的连续坍塌。This study focuses on the building roof of Jinan East Railway Station,and investigates the dynamic a-nalysis of the structure under the set conditions to prevent continuous collapse by using the method of removing components considering various failure conditions.The important components of the structural roof are determined,and the criteria for component failure are given.An analysis is conducted to determine whether the stress ratio and deformation of the structure meet the design requirements at the moment of failure of the key components.The re-sults indicate that the roof does not experience local failure under single bearing failure conditions.In the case of side and double bearing failures,the arch where the bearings are located is damaged,and the adjacent arch is par-tially damaged.The overall structure did not suffer any damage,and the damage is still limited to a local area,which will not cause a continuous collapse of the entire structure.

关 键 词：济南东站 大跨拱屋盖 抗连续倒塌 瞬时卸载法 动力分析 等效荷载 

分 类 号：TB33[一般工业技术—材料科学与工程]