整体式空心板连续梁桥的内力增大系数研究  

Study on Internal Force Increment Coefficient in Integral Hollow Slab Continuous Beam Bridges

作　　者：陶能迁[1] 陈斌[2] 王福敏[2] 

机构地区：[1]重庆交通大学,重庆400074 [2]重庆交通科研设计院,重庆400067

出　　处：《公路交通技术》2007年第1期66-71,共6页Technology of Highway and Transport

摘　　要：梁桥工程人员在整体式板、箱梁桥设计时一般是根据经验用一个内力增大系数值来考虑活载的不均匀作用,偏安全考虑此增大系数一般粗略地偏大取值。但是在进行桥梁承载力评估时,工作的特殊性要求知道更为真实的内力增大系数值。结合某城市立交中大量采用的空心板连续梁的实际情况,利用通用有限元软件ANSYS进行分析计算,并与一般的平面简化计算方法进行对比,探讨此种桥型内力增大系数取值的合理性问题。When beam bridge designers design integral slab/box girder bridge, they use an internal force increment coefficient to treat the imbalance of live load, for safety reason, bigger value of this increment coeffieient is taken. However, when evaluating the bridge load ability, the specialty of work requires knowing more real internal force increment coefficient. Based on practise of popular hollow slab continuous beam in overpass in certain city, this paper adopts general limited element software, ANSYS, to give analysis and calculation, and compares the result with that from common plane short- cut calculation method, so to explore the rationality of determination of the internal force increment coefficient in this bridge type.

关 键 词：空心板 内力增大系数 ANSYS 

分 类 号：U448.215[建筑科学—桥梁与隧道工程]