软土地区复杂环境条件下的超深特大型深基坑变形监测与分析

Monitoring and Analysis of Ultra-Deep Extra-Large Foundation Pit Deformation under Complex Environment Conditions in Soft Soil Area

文中基于某软土地区复杂环境下的超深特大型深基坑工程施工工况,结合大直径灌注桩、桩间高压旋喷桩加局部三层混凝土支撑的支护方式,阐述了对基坑支护顶部位移、深层土体水平位移、周边环境变形、支撑轴力、地下水位等监测工作。监测数据分析表明,基坑支护设计方案达到了预期设计目标,实现了动态设计和信息化施工的目的。

According to construction conditions of an ultra-deep extra-large deep foundation pit project in a soft soil region with intricate environments,combined with the supporting approach of massive diameter grouting piles and high-pressure jet grouting piles between piles plus partial three-layer concrete propping,this essay expounds monitoring tasks regarding displacement of foundation pit support top,horizontal displacement of profound soil,distortion of surrounding environments,axial force of supporting,groundwater level,and so forth.Monitoring data analysis displays that the foundation pit support design scheme has achieved expected design goals and implemented the purposes of dynamic design and automated construction.