摘要
以跨径20m的简支斜交空心板梁桥拼宽为工程背景,运用ANSYS有限元软件建立全桥空间有限元模型,分析了在汽车荷载和新老桥不均匀沉降作用下桥梁的静力特性,比较了20cm、25cm、30cm和35cm四种不同接缝高度对受力特性的影响。分析结果认为:对于20m跨45度斜交空心板梁桥拼宽,新老桥不均匀沉降值应控制在5mm之内,接缝高度采用30cm或35cm。
For a widening engineering of a simple supported skewed hollow slab bridge,the static characteritics of the bridge in the action of truck load as well as the load from uneven settlement was studied with spatial finite element model constructed by ANSYS software,and then the static behavior of the bridge with four different height joints varing from 20cm to 35cm also were analyzed and compared.The results show that the value of uneven settlements between new and old bridges should be limited within 5mm,and 30cm or 35cm height joint is suitable for bridge widen enginnering of the hollow slab bridge with 20m span and 45 skewed degree.
出处
《福建建筑》
2011年第4期99-102,共4页
Fujian Architecture & Construction
关键词
桥梁工程
简支斜交空心板梁桥
桥梁拼宽
静力特性
接缝高度
Bridge engineering Simple supported skew hollow slab beam bridge Bridge widen Static behavior Joint height
