竖向预应力损失对箱梁腹板斜裂缝影响分析  

Analysis of Diagonal Cracks in Box Girder Web Effected by Vertical Prestressed Loss

作　　者：邓志恒[1] 罗志佳[1] 林俊[1] 

机构地区：[1]广西大学土木建筑工程学院,广西南宁530004

出　　处：《公路工程》2007年第6期19-22,52,共5页Highway Engineering

基　　金：广西自然科学基金项目资助(0575011)

摘　　要：针对预应力连续刚构桥箱梁腹板斜裂缝的问题,从温度,预应力损失等方面进行分析,并且对腹板的应力状况进行空间有限元分析,结合实际工程,研究分析箱梁腹板裂缝的成因及防治措施。According to the problem of diagonal cracks existing on box girder web of prestressed continuous rigid frame bridge, authors make a analysis from temperature, vertical prestressed loss and other.aspects, and make a finite element simulation calculation and analysis. Combining with a practical project, this article analyzes the cracking causes of box web and presents some measure to prevent cracks.

关 键 词：连续刚构桥 箱形梁 裂缝 ANSYS 

分 类 号：U448.213[建筑科学—桥梁与隧道工程]