复杂环境中基坑施工安全风险预警标准

发布时间：2018-01-17 23:03

本文关键词：复杂环境中基坑施工安全风险预警标准　出处：《岩石力学与工程学报》2014年S2期 　论文类型：期刊论文

【摘要】：当处于紧邻建筑物等复杂环境时,基坑安全预警标准需要能够准确量化关联周围环境的安全性和该工程的经济性。基于风险理论,提出复杂环境中基坑安全风险预警标准设计方法。为确定设计参数,采用概率统计分析得到风险预警指标与周围地层变形的概率关系。采用数值分析方法,研究建筑物与地层的相互作用,得到建筑物变形与风险预警指标的关系。给出建筑物损失分析方法,进而确定该风险预警标准设计方法。该标准能够灵活分析各环境因素不同的复杂组合,涵盖面广,且采用了分级预警机制。可随工程施工进行动态预警标准设计,通过工程实例验证,该预警标准设计方法能够较好地符合工程实际。
[Abstract]:When in the adjacent complex environment such as buildings, foundation pit safety warning standards need to be able to accurately quantify the safety of the surrounding environment and the economy of the project, based on risk theory. In order to determine the design parameters, the probabilistic relationship between the risk early warning index and the deformation of surrounding strata is obtained by means of probabilistic statistical analysis, and the numerical analysis method is adopted. The relationship between building deformation and risk early warning index is obtained by studying the interaction between building and stratum, and the analysis method of building loss is given. Then the design method of the risk early warning standard is determined. The standard can flexibly analyze the complex combination of different environmental factors and has a wide range of coverage. The design method can be used to design the dynamic early-warning standard with engineering construction, and the design method of the pre-warning standard can better accord with the engineering practice.
【作者单位】：北京参保设计研究院;同济大学土木工程学院;总参谋标准化办公室;
【分类号】：TU753;TU714
【正文快照】： 1引言基坑工程中,预警标准是衡量工程安全(包括周围环境安全)的准绳,它体现了工程经济与安全的平衡点。区别于一般工程,基坑工程同时具有临时性、复杂性和动态性的特点。临时性使投资者与设计者在权衡经济与安全两者之间的关系时,往往比一般工程更加踌躇;复杂性主要表现在工程

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