树状柱钢梁拼接节点抗震设计改进  

Seismic design method modification of steel beam splice joint of column-tree moment-resisting frame

作　　者：李启才[1] 顾强[1] 申林 蔡益燕 

机构地区：[1]苏州科技学院土木工程系,苏州215011 [2]中国建筑标准设计研究院,北京100044

出　　处：《建筑结构》2010年第6期23-25,共3页Building Structure

基　　金：国家自然科学基金资助项目(59978041)

摘　　要：在试验及有限元分析的基础上,分析了树状柱刚性框架的梁柱连接抗震设计方法,特别是其中的钢梁抗震拼接问题,对设计规范和人们认识上的几个根本性观念进行了纠正或强调。按照现行规范中的抗震要求,树状柱刚性框架中的钢梁拼接,材料和人力花费较多,而且不利于抗震。在设计承载能力阶段,钢梁的拼接可以按照拼接节点处的实际受力进行设计。在极限承载能力阶段,钢梁的拼接只要达到梁的全截面塑性承载能力即可。Based on experimental test and finite element analysis,design methods of beamto-column connection of column-tree moment-resisting frame under seismic loads are examined in details,especially the steel beam splicing joint.Some fundamental concepts in design codes and people＇s cognition are rectified or emphasized.It is believed that beam splicing in column-tree moment-resisting frame designed according to the current design code requires more material and man＇s work,but do not benefit to structural aseimic property.Design suggestions on beam splicing under seismic load are given as： under the elastic stage,it can be designed according to actual internal force state at splice center,and under the ultimate bearing stage,it can be designed not less than the full plastic bearing capacity of beam section,etc..

关 键 词：树状柱框架 钢梁拼接 设计方法 高强螺栓 

分 类 号：TU352[建筑科学—结构工程]