软弱土层地下通道不均匀沉降分析及基础设计

Uneven settlement analysis and foundation design of underground passages in soft soil

以某地下通道工程为例,根据埋深不同和沉降缝位置,将整条地下通道分为5个节段,并在FLC3D平台上对其进行数值模拟。研究不同条件/工况组合下,整条地下通道纵向各节段间不均匀沉降规律,提出了基础设计优化建议,控制通道不均匀沉降,减小运营期通道渗漏水,并在此基础上提出了软土地基上设计建造下穿式地下通道的若干合理化建议。

An underground passage project was taken as an example.The entire underground passage was divided into five sections based on different burial depths and the location of the settlement joints,and then numerically simulated on the FLC3D platform.The uneven settlement between longitudinal sections of the entire underground passage under different conditions/working condition combinations was studied.A basic design optimization proposal was proposed to control the uneven settlement of the passages and reduce the possibility of leakage during operation.On this basis,several reasonable suggestions are put forward for designing and constructing a down-through underground passage on soft foundation.