大型地下车站基坑施工对周边环境的影响分析

广深港客运专线深圳福田站为我国第一座大型的客运专线地下车站。为确保车站基坑施工过程中周边建筑物的安全,就基坑施工对周边构筑物的影响进行了深入分析。探讨了硬化模型(HS模型)和莫尔库伦模型(MC模型)土体本构关系对基坑数值模拟的适应性。在考虑风载的不利因素作用下,分析了车站基坑施工对距离基坑只有12 m的香格里拉酒店的影响,为今后工程的设计与施工和周边建筑物的安全控制提供了参考依据。

Influence of Foundation Pit Construction of Large Underground Station on Environment

Shenzhen Futian Station on Guangzhou-Shenzhen-Hongkong passenger transport line is the first large underground station built for passenger transport in China.To ensure the safety of the surrounding buildings in the station's foundation pit construction,this paper analyses the influence of foundation pit construction on the surrounding buildings in detail,and discusses the constitutive relations' adaptability of Hardending-soil model and Mohr-coulomb model to the numerical simulation of foundation pit.And taking Shangri-La Hotel,which is only 12 meters-distance away from the foundation as a target,the paper analyses this influence of the foundation construction,and the unfavorable factors such as wind load.The analytic results provide a basis for the safety control of engineering construction with the surrounding buildings in future.