预应力矩形钢管混凝土梁力学性能研究  

RESEARCH ON MECHANICAL BEHAVIORS OF PRESTRESSED CONCRETE-FILLED RECTANGULAR STEEL PIPE BEAM

作　　者：马星[1] 徐祝岭 

机构地区：[1]同济大学工程力学与技术系,上海200092 [2]海军东海工程设计院,上海200083

出　　处：《工业建筑》2003年第1期66-68,共3页Industrial Construction

基　　金：上海市建设技术发展基金资助项目

摘　　要：研究预应力矩形钢管混凝土梁极限承载力实用计算公式及有限元计算方法 ,并对混凝土强度等级、含钢率、预应力等参数进行分析。计算结果表明 ,矩形钢管混凝土梁受拉区配筋可以大幅度提高构件极限承载力 。A practical formula for ultimate bearing capacity of the prestressed concrete\|filled rectangular steel pipe beam is deduced and the finite element method is studied in this paper.Parameters including concrete grade,steel ratio,prestress are analyzed.Calculation results show that placing steel bar in the tensile area will improve the ultimate bearing capacity of the concrete\|filled rectangular steel pipe beam, and meanwhile prestressing will effectively reduce its deflection.

关 键 词：预应力 矩形钢管混凝土梁 力学性能 极限弯曲强度 挠度 

分 类 号：TU398.9[建筑科学—结构工程]