体外预应力混凝土简支梁的抗弯受力性能研究和非线性分析  

作　　者：奉龙成[1] 杨家玉[1] 伍波[1] 

机构地区：[1]重庆交通科研设计院,重庆400067

出　　处：《公路交通技术》2003年第6期42-46,95,共6页Technology of Highway and Transport

摘　　要：通过对 6片体外预应力混凝土简支梁的试验 ,分析非预应力筋的配筋率对结构受力性能的影响 ,同时建立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计算方法 ,并利用按该方法所编的非线性程序对 6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。Through tests on six simple supported concrete beams with external prestress, the influence of reinforcement ratio of nonprestressed reinforcement on bearing capacity of structure is analyzed, a finite element calculation method for coupling analysis of geometric non-linearity and material non-linearity of simple supported beam with external prestress is established. A nonlinear analysis is carried out on the six simple supported beams with external prestress by using the nonlinear program worked out from the finite element calculation method mentioned above. Results show that the method is very accurate.

关 键 词：体外预应力混凝土简支梁 抗弯受力性能 非线性分析 极限承载力 有限元 混凝土桥梁 

分 类 号：U448.35[建筑科学—桥梁与隧道工程]