地铁施工环境影响定量风险指标研究

地铁施工邻近建筑物和构筑物受施工影响的安全风险评价是急需解决的关键技术问题之一。考虑实际工程中地层参数呈区间分布的特点，建议借助于区间分析理论估计建筑物和构筑物对于地铁施工的响应。在此基础上，通过引入风险评价函数定义了风险指标 ，在假定环境响应均匀分布的前提下定义了风险指标 。通过这两个指标可以将建筑物和构筑物受施工影响是否安全分为不可能事件、风险事件和必然事件。将风险事件分为3个等级，并建议了相应的应对措施。举例说明了定义的风险指标在实际工程中的应用。

Study of quantitative risk index of metro tunneling-induced effects on surroundings

The safety risk evaluation of metro tunneling-induced effects on adjacent buildings and structures is one of the problems urgently to solve. Considering the interval distribution characteristic of ground parameters in engineering, the interval analysis theory is suggested to estimate the interval of the response of buildings and structures. Based the response interval, a risk index is defined by introducing the risk evaluation function; and the other risk index is defined by assuming the response is the uniform distribution. With the two risk indexes, the event that whether the buildings and structures adjacent tunneling are safe or not is classified into the impossible event, the risk event and the sure event. The risk event is further classified into 3 classes, and responding measures are recommended. In the end; the application of the defined risk indexes to engineering is explained in an example.