性能化设计方法在偏心腹杆钢桁架连廊结构中的应用  

Applications of Performance-Based Design Methods in Eccentric Web Member Steel Truss Corridor Structures

作　　者：郭一峰 杨律磊 孙意斌 龚敏锋 赵建忠 Yifeng Guo;Lyulei Yang;Yibin Sun;Minfeng Gong;Jianzhong Zhao(ARTS Group Co.,Ltd.,Suzhou 215123,China)

机构地区：[1]中衡设计集团股份有限公司,江苏苏州215123

出　　处：《钢结构(中英文)》2024年第12期12-19,共8页Steel Construction(Chinese & English)

摘　　要：论述了性能化设计方法在某偏心腹杆钢桁架结构体系中的应用,基于非均匀梁的力学特性研究了偏心腹杆钢桁架中间段与两端连接梁刚度的比值对桁架内力分布的影响。通过合理的结构初步设计,控制钢桁架中间段与连接梁抗弯刚度比,使连接梁承载力需求易于满足,同时降低了主体结构相关连接范围内的承载力设计需求。对结构的抗震性能、节点应力、舒适度性能与防连续倒塌性能分别进行分析与评估,结果表明:通过合理的性能化设计,结构各项指标均满足预期性能目标要求,可供类似工程的设计参考。The applications of performance-based design methods on eccentric web member steel truss structural system were discussed.Based on the mechanical properties of non-uniform beams,the study examineed the influence of the ratio of the stiffness between the middle section of the eccentric web member steel truss and the connecting beams at the both ends on the internal force distribution of the truss.Through rational preliminary design,the bending stiffness ratio between the middle part and connecting beams was controlled,which allowed the demands of connecting beams to be easily satisfied while simultaneously reducing the demands of components and connections within the relevant ranges of the main structure.The seismic performance,stress of joints,human comfort of floor vibration,and progressive collapse prevention of the eccentric web member steel truss corridor structure were designed and assessed respectively.The results demonstrated that,through rational performance-based design,each index satisfied the requirements of expected performance objectives.The research also could provide references for similar projects.

关 键 词：钢连廊 偏心腹杆桁架结构 性能化设计 抗震设计 楼盖舒适度 防连续倒塌 

分 类 号：TU391[建筑科学—结构工程]