地铁盾构隧道下穿既有高铁桥群的沉降影响

摘要

To avoid the adverse effect of the construction of Metro interval of Zhengzhou East Station and Putian West Station which uses shield construction method to undercross existing High-speed Railway Bridges.In this paper, the numerical simulation method is used to analyze the influence of settlement. Results show that subway construction will have a certain impact on the existing High-speed Railway Bridges which is not so serious. The results can be used as a reference for similar tunnel engineering.%郑州地铁8号线郑州东站～圃田西站区间采用盾构法修建, 下穿既有高铁桥群, 为避免其建设对运营中的高铁桥群造成不利影响, 采用数值模拟计算进行分析.结果表明地铁施工会对既有高铁桥群产生一定影响, 但影响较小, 技术方案基本可行, 可为类似隧道下穿工程提供一定借鉴作用.