基于变权和物元原理的地铁基坑施工安全风险评价
发布时间：2019-06-22 17:41
【摘要】：提出基于变权可拓的安全风险评价方法.首先构建物元可拓模型;其次利用变权思想确定评价指标权重,再计算待评物元与经典域各等级的贴近度,并根据贴近度确定风险等级特征值;然后利用变权理论对指标进行敏感性分析,判别敏感性指标并加强监控控制.结合工程实例,对基坑施工中钻孔灌注桩监控单元的安全风险进行评价并指出敏感性指标,结果表明该评价方法具有较好的工程应用价值.
[Abstract]:A security risk assessment method based on variable weight extension is proposed. Firstly, the matter-element extension model is constructed; secondly, the weight of the evaluation index is determined by using the idea of variable weight, and then the closeness degree between the object element to be evaluated and each grade in the classical domain is calculated, and the characteristic value of the risk grade is determined according to the closeness degree. Then, the sensitivity analysis of the index is carried out by using the variable weight theory to distinguish the sensitivity index and strengthen the monitoring and control. Combined with an engineering example, the safety risk of bored pile monitoring unit in foundation pit construction is evaluated and the sensitivity index is pointed out. the results show that the evaluation method has good engineering application value.
【作者单位】： 华中科技大学土木工程与力学学院;吉林建筑大学经济与管理学院;华中科技大学同济医学院附属同济医院基建科;
【基金】：国家自然科学基金项目(编号:51378235,71571078) 湖北省自然科学基金重点项目(编号:zrz2014000104)
【分类号】：TU753
本文编号：2504820
[Abstract]:A security risk assessment method based on variable weight extension is proposed. Firstly, the matter-element extension model is constructed; secondly, the weight of the evaluation index is determined by using the idea of variable weight, and then the closeness degree between the object element to be evaluated and each grade in the classical domain is calculated, and the characteristic value of the risk grade is determined according to the closeness degree. Then, the sensitivity analysis of the index is carried out by using the variable weight theory to distinguish the sensitivity index and strengthen the monitoring and control. Combined with an engineering example, the safety risk of bored pile monitoring unit in foundation pit construction is evaluated and the sensitivity index is pointed out. the results show that the evaluation method has good engineering application value.
【作者单位】： 华中科技大学土木工程与力学学院;吉林建筑大学经济与管理学院;华中科技大学同济医学院附属同济医院基建科;
【基金】：国家自然科学基金项目(编号:51378235,71571078) 湖北省自然科学基金重点项目(编号:zrz2014000104)
【分类号】：TU753
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