邻近运营区间基坑安全施工控制技术

Safety Construction Control Technology for Foundation Pits Adjacent to Operational Sections

摘要:

以深圳地区某一邻近运营区间隧道新建车站基坑工程为依托，采用三维有限元数值模拟分析方法，对基坑施工引起的围护结构变形、周边土体沉降和运营隧道受力变形进行预测，结合现场多种监测手段，验证了数值模型分析预测的有效性，确保了基坑工程顺利施工，并介绍了工程中采用的数种施工影响控制措施，为类似工程提供借鉴和参考。

Abstract:

Relying on a newly-built station foundation pit project adjacent to the operating interval tunnel in Shenzhen, the three-dimensional finite element numerical simulation method is used to predict the deformation of enclosure structure, the settlement of peripheral soil and the force deformation of operating tunnel caused by the construction of foundation pits. Combined with the multiple monitoring methods at the site, the validity of the numerical model analysis and prediction is verified, and the smooth construction of the foundation pit is ensured. And several kinds of construction impact control measures adopted in the construction are introduced, which provides a reference for similar project.