宽大基坑开挖围护结构方案研究

针对乌鲁木齐市某交通枢纽车站宽大基坑开挖的地质特殊情况及周边环境的复杂情况,分析了高压旋喷桩不能成桩的原因,并对比分析了高压旋喷桩与咬合桩围护方案的优劣,经现场试验,最终提出采用咬合桩对基坑进行围护的方案。

Schematic Study on Large Excavation Envelop Structure

Focusing on the complexity of special circumstances and surrounding geological environment of one transportation hub station in Urumqi city for large excavation, the cause of failure grouting pile into pile by using high-pressure jet are analyzed, and comparative analysis of pros and cons of both schemes namely high-pressure jet grouting pile and occlusal envelop pile is conducted. After field tests, the program by using occlusive pile for foundation pit envelop is proposed as final conclusion.