基于變權(quán)和物元原理的地鐵基坑施工安全風(fēng)險評價
發(fā)布時間:2019-06-22 17:41
【摘要】:提出基于變權(quán)可拓的安全風(fēng)險評價方法.首先構(gòu)建物元可拓模型;其次利用變權(quán)思想確定評價指標權(quán)重,再計算待評物元與經(jīng)典域各等級的貼近度,并根據(jù)貼近度確定風(fēng)險等級特征值;然后利用變權(quán)理論對指標進行敏感性分析,判別敏感性指標并加強監(jiān)控控制.結(jié)合工程實例,對基坑施工中鉆孔灌注樁監(jiān)控單元的安全風(fēng)險進行評價并指出敏感性指標,結(jié)果表明該評價方法具有較好的工程應(yīng)用價值.
[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.
【作者單位】: 華中科技大學(xué)土木工程與力學(xué)學(xué)院;吉林建筑大學(xué)經(jīng)濟與管理學(xué)院;華中科技大學(xué)同濟醫(yī)學(xué)院附屬同濟醫(yī)院基建科;
【基金】:國家自然科學(xué)基金項目(編號:51378235,71571078) 湖北省自然科學(xué)基金重點項目(編號:zrz2014000104)
【分類號】:TU753
本文編號: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.
【作者單位】: 華中科技大學(xué)土木工程與力學(xué)學(xué)院;吉林建筑大學(xué)經(jīng)濟與管理學(xué)院;華中科技大學(xué)同濟醫(yī)學(xué)院附屬同濟醫(yī)院基建科;
【基金】:國家自然科學(xué)基金項目(編號:51378235,71571078) 湖北省自然科學(xué)基金重點項目(編號:zrz2014000104)
【分類號】:TU753
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