体外预应力钢—混凝土组合连续梁试验研究  

Experimental study of external prestressed steel-concrete composite continuous beams

作　　者：宗周红[1] 郑则群[1] 房贞政[1] 车惠民[2] 

机构地区：[1]福州大学土木建筑工程学院,福建福州350002 [2]西南交通大学土木工程学院,四川成都610031

出　　处：《中国公路学报》2002年第1期44-49,共6页China Journal of Highway and Transport

基　　金：国家自然科学基金项目 (5 93 3 813 0 );福建省教委项目 (JA9912 6

摘　　要：进行了预应力钢—混凝土组合连续梁的静载全过程试验 ,分析了荷载—跨中变形特征、沿梁长度的滑移分布规律、截面高度方向的应变分布、预应力筋应力变化以及连续梁的内力重分布机理、破坏模态与极限强度 ;非线性有限元分析结果、简化计算模型预测结果与试验结果吻合较好。In this paper, continuous prestressed composite girders are tested.The load deflection and load stress increment of prestressed tendons are compared and studied.The load slip along the span of girder and the strain distribution along the height of composite section are analysed. The moment redistribution, the failure mode and the ultimate strength of the structure are also studied.The values predicted by the nonlinear finite element model and the simplified calculation model are found to correlate well the measured data.

关 键 词：体外预应力 钢-混凝土组合连续梁 试验研究 非线性分析 桥梁 

分 类 号：U443.35[建筑科学—桥梁与隧道工程]