地下连续墙竖向承载研究

Study on Vertical Bearing Capacity of Diaphragm Wall

地下连续墙由于良好的工程特性起初作为支护结构应用在基坑工程中,特别是深基坑工程,而作为竖向承重基础的应用却很稀少。当地连墙作为基础结构时与桩的承载类似,其承载机理与作为档土、抗渗的支护结构完全不同,并且整体刚度大,承载性能优异,其可以应用在各类地质环境中。由于地连墙作为承重基础的发展仅仅处于起步阶段,为了研究地连墙的承载性能及其承载力,论文主要采用数值模拟的方法分析了地连墙作为刚性基础的竖向承载特性,总结了承载力的计算公式,并应用青森港湾大桥P9主室的监测报告加以验证。

Due to its good engineering characteristics,diaphragm wall was initially used as a support structure in foundation pit engineering,especially in deep foundation pit engineering,but it is rarely used as a vertical load-bearing foundation.When the diaphragm wall is used as the foundation structure,it is similar to the bearing of pile.Its bearing mechanism is completely different from that of soil retaining and impermeable support structure.It has large overall stiffness and excellent bearing performance,and can be applied in various geological environments.Because the development of diaphragm wall as load bearing foundation is only in the initial stage,in order to study the bearing performance and bearing capacity of diaphragm wall,this paper mainly uses the numerical simulation method to analyze the vertical bearing characteristics of diaphragm wall as rigid foundation,summarizes the calculation formula of bearing capacity,and verifies it with the monitoring report of p9 main room of Qingsen harbor bridge.