基坑工程对下穿运营铁路立交的影响与保护

Influence and Protection of Foundation Pit Engineering on Underpass Railway Interchange

结合苏州城北路改建工程下穿京沪铁路、沪宁高铁立交节点工程,分析基坑工程对下穿运营铁路立交的影响及建议措施,并着重从设计、施工、监测等方面探讨基坑施工期间为确保铁路立交运营安全采取的各项保护措施。通过对施工过程和监测数据的分析,认为所采取的基坑围护方案、铁路慢行等各项保护措施具有必要性及可实施性,通过监测数据实时指导基坑工程施工可确保京沪铁路、沪宁高铁的安全运营。

Combined with the interchange node project of underpass Beijing-Shanghai Railway and Shanghai-Nanjing High-speed Railway in Suzhou Chengbei Road Reconstruction Project, the influence of foundation pit engineering on the underpass railway interchange is analyzed and the measures are proposed. Various protection measures taken for ensuring the operation safety of railway interchange during the construction of foundation pit are discussed specially from the design, construction, monitoring and the other aspects. By analyzing the construction process and monitoring data, it is found that various protection measures of foundation pit enclosure scheme and slow railway running are necessary and implementable. The monitoring data can be used to guide the construction of foundation pit in real time,which can ensure the safe operation of Beijing-Shanghai Railway and Shanghai-Nanjing High-speed Railway.