体外预应力混凝土简支梁的非线性分析  

Nonlinear Analysis of Simple-Supported Concrete Beams with Post-Tensioned External Tendons

作　　者：罗小华[1] 陈扬骥[1] 刘永明[1] 奉龙成 杨家玉 

机构地区：[1]同济大学,上海200092 [2]重庆交能科研设计院,重庆400067

出　　处：《结构工程师》2002年第2期25-31,共7页Structural Engineers

摘　　要：通过对六片体外预应力混凝土简支梁的试验 ,分析了非预应力筋的配筋率对结构受力性能的影响 ,同时建立了体外预应力混凝土简支梁的几何非线性与材料非线性的耦合分析的有限元分析计算方法 ,并利用按该方法所编的非线性程序对六根体外预应力简支梁进行了非线性分析 ,结果表明该方法是相当精确的。According to the experiment informations of 6 simple-supported conerete beams with post-tensioned external tendons, the effects of non-prestressed bars on the structures are investigated. The FE method to this kind of the structure considering both geometric nonlinear and material nonlinear is also presented in this paper. A finite element program is compiled to carry out the structural analysis. By comparing the numerical results with the results of the experiment, it is showed that the method in this paper is feasible and accurate.

关 键 词：体外预应力 非线性 极限承载力 混凝土 简支梁 

分 类 号：TU378.2[建筑科学—结构工程]