京沪高速公路桥头跳车病害的综合防治

结合京沪高速公路天津北段实际工程，系统分析了桥头跳车产生的原因与机理，针对地基与路堤的不同处理，采用《建筑地基基础设计规范》方法分别计算了路面沉降差异，并将计算结果与实测结果进行了对比与分析，得出防治桥头跳车的原则，最后，结合京沪高速公路天津北段工程的成功经验，从材料选择、优化设计、科学施工、适当提高规范要求等方面提出防治桥头跳车的具体措施。

The Jing-Hu Freeway Comprehension Prevention and Treatment of Abutment Jump

Integrated practical engineering from Northern Section of JING-HU freeway in TIANJIN, the thesis systems analyses the cause and mechanism of the abutment jump. To the different kinds of ground and embankment, the thesis calculates the unequal settlements of the road surface by the way of specification, compares them with the practical results from the engineering, further analyses and puts forward the principles to overcome it. At last according to the successful experiences from the engineering and the principles, the thesis puts forward the special measures preventing and treating the abutment jump from choosing the building material; optimizing design, optimizing execution, enhancing the level of specification.