自动监测及信息化施工技术在基坑工程施工中的应用

APPLICATION OF AUTOMATIC MONITORING AND INFORMATION TECHNOLOGY IN FOUNDATION PIT CONSTRUCTION

通过基坑开挖过程中预埋的位移传感器及锚杆轴力计,自动监测岩土水平变形及锚杆轴力变化等信息,通过数值模拟技术与基坑支护设计方案进行比较分析,结合基坑实际变形情况进行动态反演获取反映场地特征的岩土参数,利用反演的岩土参数再次计算基坑理论变形量,通过理论计算值与实际检测值进行分析动态对比,指导后续开挖与支护施工,达到了较好的施工效果。

The embedded displacement sensors and anchor shaft force meters were used to automatically monitor the horizontal deformations of rock and soil and the changes of anchor shaft force.A numerical simulation technology was used to compare and analyze the support design scheme of the foundation pit,and the geotechnical parameters reflecting the characteristics of the site were obtained by a dynamic inversion method combined with the actual deformation of foundation pit.The theoretical deformation of foundation pit was calculated again by using back analysis method to abtain rock and soil parameters,and the dynamic comparison between the theoretical calculated value and the actual measured value was carried out to guide the subsequent excavation and support construction,and satisfactory results were achieved.