基于GIS的重大工程地基基础模块设计的关键问题研究

Research on some key problems of foundation design module based on GIS

基于GIS(geographical information system)平台开发地基基础设计计算模块是重大工程信息化管理系统的重要研究内容之一,它可以有效利用数据库的动态数据,提高设计计算的效率,从而为工程的设计施工提供技术支撑。研究以岩土力学知识及相关行业设计规范为基础,以MAPGIS地理信息系统为开发平台,采用数据库技术、C++编程技术等信息技术,探讨了桩基设计、复合地基设计、洞室围岩支护设计以及边坡加固设计计算的若干关键问题与可视化实现。该模块可自动调用动态数据库的数据对桩基、复合地基、洞室支护等进行设计计算,对边坡稳定性问题进行分析;并可供数据存储及查询。结合广东省内的重大工程——东深供水改造工程的GIS系统开发,提出了地基基础模块的功能设计与实现方法,阐述了模块设计中的几个关键问题,将研究结果应用于该工程中,取得了较好的效果。

Development of the design and calculation module of foundations based on GIS platform is one of the important contents of information management system of major projects, It can use the time-depended renewed dynamic data from the database efficiently to improve the efficiency of design and calculation and can provide a technical support for the design and construction of projects. On the basis of rock and soil mechanics and the designing standard of related specialty, by taking the MAPGIS as a developed platform, the main point is focused on somekey problems and their visualization technologies such as designs of piles, composite foundations of soft clay, supporting of surrounding rocks of tunnels as well as slope reinforcement by combining with database technology and C＋ ＋ program technology etc.. The module which is built up by these technologies can automatically transfer the data from the database to calculate and design for piles, composite foundation and supporting of tunnels, and also to give an analysis of slope stability; furthermore, to provide a function of memory and inquiring of data. By associating with the development of underground environmental information system in a major project, Water Supply Reconstruction Project from Dongguan to Shenzhen of Guangdong Province in China, this paper is focused on the details of function design and realization methods as well as their application to the major project. The research results show that developed module in the GIS is proved to be effective.