摘要
根据非线性有限元理论,建立CFS加固RC箱梁的三维非线性有限元分析模型,对箱梁进行斜截面承载力分析.针对箱梁桥的开裂特点与受力情况,制作4根RC箱梁并进行CFS加固RC箱梁的模型试验,通过逐级加载,研究CFS加固RC箱梁斜截面时的破坏全过程,分析CFS加固RC箱梁斜截面的受力特点和加固箱梁的极限承载力,对有限元计算结果与试验结果进行对比分析,进一步验证了理论计算模型的正确性.
According to nonlinear finite element theory, a three-dimensional nonlinear finite el- ement model for strengthening RC box girder with CPS is proposed, and inclined section bear- ing capacity of box girder is analyzed. According to the characteristics of the cracking and force condition, 4 RC box girders are made and model test of strengthening RC box girder with CFS is done. Through loading by stage on strengthening RC box girder with Cb-＇S, the failure process of inclined section of strengthening RC girder with CFS is studied, and the stress characteristics of inclined section and ultimate bearing capacity of strengthening box girder are analyzed. The comparative analysis of finite element calculation result further verifies the correctness of the theoretical calculation model
出处
《交通科学与工程》
2009年第3期29-34,45,共7页
Journal of Transport Science and Engineering
基金
湖南省自然科学基金资助项目(08JJ3117)
关键词
RC箱梁
斜截面破坏
CFS加固
计算模型
RC box girder
inclined section failure
CFS reinforcement
calculation models
