区间数学在城市轨道交通施工对邻近房屋影响的风险评价中的应用研究
首发时间:2009-02-06
摘要:近年来,为了解决城市发展过程中的环境交通问题,我国城市地下空间的开发、利用得到了快速发展。城市轨道交通工程建设中对邻近房屋影响的问题愈来愈多,直接关系到人民的生产生活和城市的正常运行。因而,急需对这些房屋受城市轨道交通施工影响的风险进行分析和评价。国内外对于地铁周围房屋受施工影响风险问题的研究比较少,早期曾采用沉降槽理论,后来又将概率理论和可靠度理论应用于此,但概率理论的应用需要较多的数据,且依赖于精确的数据采集,显然在实际工程中这并不现实。可靠度理论的缺陷在于在实际工程中一般很难验证地层参数的统计特征;本文基于区间数学,选取典型工点,建立起房屋基础变形计算模型,处理了地层参数的不确定性,解决了房屋基础沉降风险评价函数的区间扩展形式及由此带来的区间过宽问题,对房屋的安全风险做出了合理的度量,可以给城市轨道交通建设提供理论和现实参考。
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Research into the Application of Interval Mathematics to the Risk Assessment of the Influence for Adjacent Building Caused by Constructing Urban Rail Transit
Abstract:Recently, for solving the environment & traffic problem during developing the city, the exploitation of underground space is growing rapidly in our country. The problem of the influence for adjacent building is more and more, which affects people life and city function. So urgently need to assess the influence for building by construction. Currently the risk assessment of the influence of adjacent building by underground construction lacks greatly. At first, people adopt settler theory, and then apply probability and reliability theory. But probability theory requests much more data and relies on precise data collection, apparently, it is not practical. Also, the limitation of reliability theory rests with that it is difficult to prove the statistical character of Stratum parameter. The author uses interval mathematics in the paper, chooses the typical building site builds calculation model of building deformation, deals with the uncertainty of stratum parameter, solves interval patulous form of the risk assessment function caused by building deformation and the over-wide interval problem, gives a reasonable safety risk to building. It could provide theoretic and practical reference to constructing urban rail transit.
Keywords: Urban rail transit Interval Mathematics Underground Construction Building Risk Assessment
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区间数学在城市轨道交通施工对邻近房屋影响的风险评价中的应用研究
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