基于集对理论及模糊层次分析的深基坑施工风险评价

为评价深基坑施工风险,结合施工管理、场地地质条件、基坑设计、施工技术水平及周边情况等影响因子,采用模糊层次分析理论(FAHP)和集对分析方法(ISPA)构建了深基坑施工风险综合评价模型。运用该评价模型对某高层建筑深基坑工程进行施工风险评价,得出该深基坑施工风险等级为Ⅳ级(属于高度风险),且一级评价指标的风险等级排序为:环境风险(Ⅳ级)>降水风险(Ⅳ级)>技术风险(Ⅳ级)>设计风险(Ⅲ级)>管理风险(Ⅲ级)。各风险因子评价结果与现场情况相吻合,验证了该模型的适用性与有效性。

Risk Assessment of Deep Pit Construction Based on Set Pair Theory and Fuzzy Hierarchy Analysis

In order to evaluate the construction risk of deep foundation pit,a comprehensive evaluation model for the construction risk of deep foundation pit was established by fuzzy analytic hierarchy process( FAHP) and set pair analysis( ISPA) on the basis of the influence factors such as construction management, site geological conditions, foundation pit design, construction technology level and surrounding conditions. From the construction risk evaluation on deep foundation pit engineering of a highrise building by evaluation model, it is concluded that the risk rating of this deep foundation pit construction is Ⅳ level( high risk),and the first level of the evaluation index of risk rank as follows: the environmental risk level( Ⅳ) > precipitation technology risk level( Ⅳ) > technology risk( Ⅳ) > design risk( Ⅲ) > manage risk( Ⅲ level). The evaluation results of each risk factor were consistent with the field conditions,which verified the applicability and effectiveness of the model.