论文部分内容阅读
一、概况桥头跳车是普遍存在的市政工程通病之一。引起桥头跳车的主要原因有二:其一,是桥面和路面相接处不是圆滑的曲线所造成;其二,则因桥梁伸缩缝构造不良所引起。在立交工程中,桥面漏水问题亦很突出,桥梁伸缩缝又是漏水的一个渠道。桥梁伸缩缝在整个桥梁结构中所占比例极小,但它要承受因温度等原因引起的梁的长度变化和车辆荷载的反复作用,稍有破坏就严重影响行车的平稳舒适。然而过去,不论是设计还是施工,都没有把桥梁伸缩缝做
First, the overview Bridgehead jumping is one of the common problems of municipal engineering. There are two main reasons that cause the bridgehead to jump off: firstly, it is caused by the curve that the bridge surface and the road surface are not smooth; secondly, it is caused by the poor construction of the bridge expansion joint. In the interchange project, the bridge surface leakage problem is also very prominent, bridge expansion joints is a leak of water. Bridge expansion joints in the proportion of the entire bridge structure is extremely small, but it has to bear due to temperature and other reasons caused by changes in the length of the beam and the repeated load of the vehicle, a slight damage will seriously affect the smooth and comfortable driving. However, in the past, neither the design nor the construction did make the expansion joints of bridges