半圆拱环梁桁架内支撑结构在软土基坑中的应用

随着基坑开挖周边环境越来越复杂,内支撑结构在软土基坑中的应用越来越普遍,其中,圆拱环梁由于受力性能好、平面开阔而得到广泛的应用。通过新型半圆拱环梁桁架结构与复合土钉墙相结合支护型式在中山地区软土基坑中的应用实例,阐述了这种支护结构的技术特点,可供类似基坑支护工程参考。

Application of Arch Beam with Internal Supporting Structures in Deep Excavation in Soft Soils

With the increasing complicity of adjacent environment of deep excavations in the urban area,structures with internal supporting systems receive a wider application.The arch beam system is among the most popular type due to its excellent load transfer and wide working zone.This paper presents a case history of using a semi-circular ring truss system combined with the soil nail wall in the deep excavation in soft soils in Zhongshan.The characteristics of this supporting structure are also introduced.