铰接中心支撑钢框架体系结构设计研究  

DESIGN AND RESEARCH ON SPECIAL CONCENTRICALLY BRACED STEEL FRAME WITH PINNED CONNECTIONS

作　　者：张文元[1] 于海丰[1] 张耀春[1] 孙雨宋[2] 

机构地区：[1]哈尔滨工业大学,哈尔滨150090 [2]东北电力设计院,长春130021

出　　处：《工业建筑》2009年第7期87-91,共5页Industrial Construction

摘　　要：在进行结构体系比较和振动台试验验证的基础上,确定了某大型电厂主厂房选用铰接中心支撑钢框架体系。对深化设计方案进行了地震响应的数值模拟研究。虽结构平面扭转和竖向质量分布均不规则,但考虑到多遇地震下没有构件屈服或失稳,且多遇、罕遇地震下的层间侧移角均满足规范要求,认为结构设计较为合理,可以满足"小震不坏"、"大震不倒"的抗震设防要求。同时也再次验证了只要设计合理,铰接中心支撑钢框架体系在8度抗震设防区仍可具有较好的抗震性能,高度也可以突破民用建筑12层的限制。最后给出了铰接中心支撑钢框架结构节点连接部分抗震设计的一些原则性建议。Based on some comparisons between the advantages and disadvantages of the two structural systems and the shaking table tests had verified that the preliminary design has a good seismic performance, the special concentrically braced steel frame with pinned connections was selected for the main building of a large thermal power plant. Taking the detailed design of this structure as prototype, the numerical analysis had been conducted . The results show that, this structure is the one with torsion and vertical mass irregularity, but considering that no members yield or out-of-plane buckling under frequent earthquakes, the inter-storey drift angles are all less than the limit values of the GB 50011--2001 under frequent and rare earthquakes, the detailed design is reasonable and it is predicted that the structure can meet the requirements of ＂no damage under frequent earthquake＂ and ＂no-collapse under rare earthquake＂. The results of the present study once again show that if the design is reasonable, the special concentrically braced steel frame with pinned connections has a good seismic performance in the seismic region with aseismic fortification of intensity 8 and the building height of such a structure can exceed the required limitation height of a 12-story civil building. At last, some suggestions on the seismic design method of connections are proposed.

关 键 词：铰接中心支撑钢框架体系 数值模拟 抗震性能 连接设计 

分 类 号：TU391[建筑科学—结构工程]