上跨地铁的铁路路基桩板结构选型研究

以新建铁路动车所跨越既有运营地铁工程为背景，分析该工点桩板结构的埋入深度，对比常用的两种型式的桩板结构对该工程的适用性。就该工点而言，采用梗肋式桩板结构加固软基，基坑开挖量小，受力性能合理，混凝土用量少，结构更为合理。由此，提出了软基的加固方案，以及施工注意事项和建议。

Research on Selection of Pile-board Structures for Railway Subgrade across the Subway

In this paper, with the railway railcar station across the existing subway as the background, the buried depth of the pile-board structure at the construction site is analyzed and the comparison is made on the applicability of the two types of pile-board structures to the project. However, as far as the construction site is concerned, the use of rib type pile-board structure to reinforce the soft foundation can bring small excavation volume, reasonable mechanical properties and less amount of concrete.the structure is more reasonable. Therefore, the reinforcement plan of the soft foundation is proposed, as well as the construction precautions and suggestions.