局部外包钢管装配柱抗震性能及接头正截面承载力计算  

STUDY ON THE SEISMIC BEHAVIOR AND NORMAL SECTION BEARING CAPACITY CALCULATION OF THE JOINTS OF LOCAL ENCASED STEEL TUBULAR ASSEMBLY COLUMN

作　　者：李青宁[1] 李育君[1] 姜维山[1] 魏威[1] 郑先超[1] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055

出　　处：《工业建筑》2014年第10期77-81,共5页Industrial Construction

基　　金：国家自然科学基金项目(10572107);河北省地方科技项目(2011188)

摘　　要：进行了5个现浇柱和7个局部外包钢管装配柱的拟静力低周反复试验,对此两种不同施工模式的混凝土柱,在相同工作条件下的抗震性能进行了分析。结果表明:其承载力高于现浇混凝土柱相应位置的承载力;局部外包钢管装配柱在抗震性能和整体性上优于现浇柱;在高烈度地区可以用此装配柱代替现浇柱。结合装配柱破坏形式和连接节点的受力特点,给出了装配柱接头正截面承载力计算公式,可用于实际装配整体式结构框架柱接头的设计和验算。Five cast-in-place columns and the seven local steel tubular assembly columns were tested by using the quasi-static trial.The integral seismic performance of the two different construction model columns under the same working conditions was analyzed, the results show that the seismic behavior of the prefabricated column joints is equivalent to that of the steel pipe concrete and their bearing capacity is higher than the cast-in-place column in the same position.The seismic performance of the assembly column with locally encased steel pipe and integrity is better than the cast-in-place column, so it may replace the cast-in-place column in the highly seismic region.According to the damaging form and the force characteristics of the assembly column connection node,the formula of the normal section bearing capacity for the prefabricated column joints was given, which could be used in designing and checking the column joints of the actual assembly overall frame structure.

关 键 词：局部外包钢管 装配柱 拟静力试验 抗震性能 正截面承载力 

分 类 号：TU398.9[建筑科学—结构工程] TU352.11