基坑支护工程的三维模拟仿真系统研究

摘要

基坑事故的发生与基坑施工方案设计不完善有着密切联系.目前基于二维平面的设计方案往往难以清楚表达基坑施工过程的空间与时间关系.而采用虚拟现实的三维模拟仿真技术,可以构建立体的施工方案表述;并且结合基坑支护结构仿真结果,验证施工方案的有效性;同时通过三维仿真模型可对基坑结构变形进行预警,以防止基坑工程事故的发生.基于 VRML 与Web Services 技术,研究并实现了一个基坑支护工程的三维模拟仿真系统.给出了系统架构,并对服务器端和客户端的开发与实现方法作了详细说明,最后给出了三维模拟仿真系统的应用实例.%Excavation and foundation construction accident is closely related to inadequate design.The current design method based on two-dimensional plane is frequently difficult to express the relationship between space and time during foundation construction clearly.The three-dimensional simulation technology with virtual reality can be utilized to build three-dimensional representation for construction program.Furthermore combined with simulation results of the foundation supporting,this technology can be used to simulate the foundation construction process, and verify the validity of the construction program.At one time the deformation prediction of deep foundation pit can be done via three-dimensional simulation model.It plays an important role in preventing the occurrence of pit accident.A three-dimensional simulation system is studied and developed based on VRML and Web Services for supporting engineering of foundation pit.The software architecture of this system is proposed, and followed by the further detailed discussion about the development of the server and client of system.At last,an application is illustrated.