摘要
高速公路的路堤一般都比较高,且桥涵较多,与一般公路相比,行车速度快,交通量大,对路基路面的要求更高。修建的高速路在穿越具有不良地基的地段时,不仅要求路堤稳定,而且对差异沉降和沉降变形特别是工后不均匀沉降量均有较高的要求。故如何减小工后沉降、减小偏压荷载以保证桥台的稳定,成为在湿软地基上修建桥梁需要重视和解决的问题。
Compared with the general highway, expressway generally has comparatively high embankment, more bridges and culverts, more rapid running speed, larger traffic volume, and higher requirement of subgrade and pavement. When the expressway is through the segment which is of ill foundation, it not only demands that embankment be steady, but also has high demand for differential settlement and settlement deformation, especially uneven settlement. How to reduce settlement and eccentric compressive load aiming at guaranteeing abutment safety, has become the problems that need to be regarded and solved when bridges are constructed on wet and soft foundation.
出处
《交通标准化》
2008年第7期200-202,共3页
Communications Standardization
关键词
桥台
湿软地基
排水
abutment
wet and soft foundation
drainage
