预应力高强混凝土梁延性性能分析与试验研究  

EXPERIMENTAL STUDY OF DUCTILILY OF PRESTRESSED HIGH-STRENGTH CONCRETE BEAMS

作　　者：张利梅[1] 赵顺波[2] 黄承逵[1] 

机构地区：[1]大连理工大学土木水利学院,辽宁大连116023 [2]华北水利水电学院土木工程系,河南郑州450011

出　　处：《工程力学》2005年第3期166-171,共6页Engineering Mechanics

摘　　要：介绍了24根预应力混凝土梁的延性性能试验结果,试验梁的混凝土强度等级为C40~C80、预应力比率为0.6~1.0、配筋指数为0.17~0.32、钢绞线的延伸率为5.0%和3.6%.结合试验梁的荷载~挠度全曲线分析计算结果,研究了混凝土强度等级、钢绞线延伸率、预应力比率、配筋指数等因素对预应力混凝土梁位移延性系数和极限承载破坏形态的影响规律,提出了设计建议.Experimental results about ductility of 24 prestressed concrete beams under static test are presented. For the test beams, the grade of concrete strength is from C40 to C80, the prestress ratio is from 0.6 to 1.0; the reinforcement index is from 0.17 to 0.32; and the uniform extended ratio of strand is 3.6% and 5.0%. The analysis of load deflection relationship of test beams is conducted. The effects of the concrete strength, the extended ratio of strand, the prestress ratio, and the reinforcement index on the displacement ductility and the failure states of prestressed concrete beams are studied. Design suggestions are proposed.

关 键 词：高强混凝土梁 试验研究 性能分析 预应力混凝土梁 混凝土强度等级 配筋指数 试验结果 延性性能 计算结果 曲线分析 影响规律 破坏形态 极限承载 位移延性 延伸率 钢绞线 系数和 比率 挠度 

分 类 号：TU378.2[建筑科学—结构工程] U448.35[建筑科学—桥梁与隧道工程]