软土地区道路下穿高铁基坑设计方案分析

Analysis on Design Scheme of Foundation Pit of Road Undercrossing High-speed Railway in Soft Soil Area

摘要:

本文主要研究道路下穿高速铁路工程中，针对软土地区高铁桥下明挖基坑设计要点，以江苏省某市政道路下穿高铁桥梁工程为例，分析基坑支护措施在符合铁路相关管理规程和文件要求，保证高铁安全运营的前提下，如何能够满足基坑整体稳定性、抗倾覆稳定性、坑底抗隆起、墙底抗隆起和抗渗流稳定性。

Abstract:

The design essentials of excavating a foundation pit under high-speed railway bridge in soft soil area are mainly studied in the road project undercrossing high-speed railway. Taking a municipal road undercrossing high-speed railway bridge project in Jiangsu Province as an example, the supporting measures of foundation pit are analyzed how able to satisfy the overall stability of foundation pit, the anti-overturning stability, the anti-uplift of pit bottom, the anti-uplift of wall bottom and the anti-seepage stability under the premise of conforming to the relevant railway management regulations and document requirements, and ensuring the safe operation of high-speed railway.