基于显微镜示踪技术的基坑土体变形规律试验研究  

Experimental investigation of deformation pattern of soil mass in foundation pit with microscope tracer technique

作　　者：张彬[1] 李广信[1] 王钊[2] 王磊[2] 

机构地区：[1]清华大学水利水电工程系,北京100084 [2]武汉大学土木建筑工程学院,湖北武汉430072

出　　处：《兰州理工大学学报》2006年第5期125-127,共3页Journal of Lanzhou University of Technology

基　　金：中国博士后科学基金(2005038134)

摘　　要：掌握并控制基坑土体的位移变形规律在其设计与施工中占据重要的地位,现场监测及室内模型试验是研究这一规律的重要途径.采用改制的读数坐标显微镜,跟踪监测埋设于土体中各测点在不同试验工况下的位移演化轨迹,实现了对基坑工程不同施工工况下土体变形规律的试验模拟,得出了不同阶段基坑土体位移场的演化规律及破坏形态,为基坑支护工程的设计提供了参考.Mastering and controlling displacement deformation pattern of foundation pit soil mass plays an important role when the foundation is to be designed and constructed. Field monitoring and model testing are important ways to investigate this pattern. Adopting improved microscope with coordinate ruler and by means of tracing and monitoring displacement track of observed points buried in soil mass under different test conditions, the deformation pattern of soil mass in foundation pit was simulated, and the evolution pattern of displacement field of soil mass and destruction form of foundation pit were obtained.

关 键 词：基坑工程 模型试验 土体变形 显微镜示踪技术 

分 类 号：TU197[建筑科学—建筑理论]