道路和河渠工程施工对轨道交通高架桥桩基的影响分析

随着现代社会城市建设的迅猛发展，城市轨道交通高架桥桩基周围建设项目越来越复杂，因此周围施工对高架桥桩基的影响分析越来越重要。以义乌市柯村至国贸大道道路改造工程和柯村渠系连通工程施工对金义东市域轨道交通工程官塘停车场出入线的影响工程实例。采用MIDAS GTS进行有限元数值分析，以研究河渠工程施工前、中、后期轨道交通高架桥的桩基及位移和沉降变化。模型计算结果表明，道路和河渠工程施工会造成周围桩基产生位移和沉降，且影响结果随着二者水平投影增大而减小。可为义乌地区其他临近轨道交通高架桥桩基建设项目提供有益的参考。

Analysis of influence of road and canal construction on pile foundation of rail transit viaduct

With the rapid development of urban construction in modern society, the construction projects around the pile foundation of urban rail transit viaduct are more and more complicated, so the analysis of the influence of surrounding construction on the pile foundation of viaduct is more and more important. This paper takes an example of the influence of the road reconstruction project from Ke Cun to Guomao Avenue and the connecting project of Ke Cun canal system on the access line of Guantang parking lot of JIN-YI-DONG Urban rail Transit project. Midas GTS is used to conduct finite element numerical analysis to study the pile foundation, displacement and settlement changes of rail transit viaduct before, during and after the construction of canal engineering. The results of model calculation show that the displacement and settlement of piles will be caused by the construction of roads and canals, and the influence results will decrease with the increase of the horizontal projection of the two piles. It can provide a useful reference for the pile foundation construction projects of other adjacent rail transit viaduct in Yiwu area.