信息识别技术在深基坑施工中的应用

Application of information recognition technology in deep foundation excavation

深基坑工程中,地质条件和施工条件复杂,荷载难于确定,为此,基于时空效应理论中深基坑工程施工的现代设计理念,结合工程实例,采用信息钮识别技术对整个深基坑施工过程进行了实时监测,对地下连续墙墙体水平位移及地下连续墙墙体顶面的沉降或隆起进行了测试,并对墙体位移和内力进行及时预报。与传统反分析方法相比,该方法避免了对参数的敏度分析,概念直观,易于实现,同时把实时监测、参数识别、预测分析和动态控制有机地连接在一起,为深基坑工程信息化施工提供了依据,使施工始终处于可控制的理想状态,保证了整个深基坑工程的安全。

The loads are difficult to be determined in the engineering of deep foundation excavation because of the complex conditions of soil and construction. Based on the deep foundation excavation theory of time-space effect, the course of the whole pit foundation was monitored by iButton information recognition technology. The horizontal displacements of diaphragm retaining wall and the settlement or the ground heave in the top of diaphragm retaining wall were analyzed. The displacement and the internal forces of wall were forecast as well. The example of the design of deep foundation excavation was given. Compared with the traditional method, iButton technology can be used easily and avoid the sensitivity analysis of the parameters. The real-time monitor, parameter identification and forecast analysis were combined with dynamic control.