复杂环境中基坑施工安全风险预警标准

doi:10.13722/j.cnki.jrme.2014.s2.000

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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。

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	顾雷雨1
	黄宏伟2
	陈伟3
	龚固培1
	王德法1
	杨辉1

关键词 ：基坑工程, 预警标准, 安全风险, 复杂环境

Abstract：When in the vicinity of building or other complex conditions，the excavation safety risk warning standard need to be able to accurately quantify the associated economy and the environment safety of the project. Based on the risk theory，the design method of the excavation safety risk early-warning standard in the complex environment was put forward. To determine the design parameters，the probabilistic characteristics of the relationships between the risk warning indicator and ground deformation were analyzed. The interaction between building and foundation was studied by numerical analysis. Consequently，the relationships between building deformation parameters and risk early warning indicator were confirmed. The analysis method of damage to the building was proposed，and then，the design method of the safety risk early warning standard was determined. This design method is able to flexibly analysis the complex combinations of environmental factors. So it can over a wide range. With the classification warning mechanism，the dynamic early-warning standard can be designed during excavation. Confirmed by the practical engineering，the early-warning standard can more accordant to the engineering practice.

Key words： foundation pit early-warning standard safety risk complex condition

引用本文:

顾雷雨1，黄宏伟2，陈伟3，龚固培1，王德法1，杨辉1. 复杂环境中基坑施工安全风险预警标准[J]. 岩石力学与工程学报, 2014, 33(S2): 4153-4162.
GU Leiyu1，HUANG Hongwei2，CHEN Wei3，GONG Gupei1，WANG Defa1，YANG Hui1. SAFETY RISK EARLY-WARNING STANDARD OF FOUNDATION PIT IN COMPLEX ENVIRONMENT DURING EXCAVATING. , 2014, 33(S2): 4153-4162.

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https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2014.s2.000 或 https://rockmech.whrsm.ac.cn/CN/Y2014/V33/IS2/4153

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