摘要To improve the traditional fuzzy evaluation method and reflect its nonlinear characteristics, a nonlinear fuzzy evaluation method based on the entropy weight of a structure is proposed according to the construction risk characteristics of the integral hoisting of concrete-filled steel tube (CFST) tied-arch bridge. The risk sources in the construction process of the integral hoisting of CFST tied-arch bridge are associated with structural and personnel safety are considered, and a construction risk level evaluation system is established. A two-level fuzzy evaluation calculation model of the said bridge is established based on the identified results. The the entropy weight of a structure method, which combines the subjective and objective assignment methods, is adopted to calculate the weights of risks. A nonlinear fuzzy algorithm is introduced to reflect the prominent effect of high-risk indicators on the evaluation results. The nonlinear fuzzy evaluation method for the construction risks in a tied-arch integral hoisting of CFST tied-arch bridges is then established. An analysis of an engineering example proves that this method is feasible and effective.
Abstract：To improve the traditional fuzzy evaluation method and reflect its nonlinear characteristics, a nonlinear fuzzy evaluation method based on the entropy weight of a structure is proposed according to the construction risk characteristics of the integral hoisting of concrete-filled steel tube (CFST) tied-arch bridge. The risk sources in the construction process of the integral hoisting of CFST tied-arch bridge are associated with structural and personnel safety are considered, and a construction risk level evaluation system is established. A two-level fuzzy evaluation calculation model of the said bridge is established based on the identified results. The the entropy weight of a structure method, which combines the subjective and objective assignment methods, is adopted to calculate the weights of risks. A nonlinear fuzzy algorithm is introduced to reflect the prominent effect of high-risk indicators on the evaluation results. The nonlinear fuzzy evaluation method for the construction risks in a tied-arch integral hoisting of CFST tied-arch bridges is then established. An analysis of an engineering example proves that this method is feasible and effective.
基金资助:Supported by the Fundamental Research Funds for the Central Universities (No.CHD2009JC166)
通讯作者:
AN Lang,E-mail address: anlang1011@126.com
E-mail: anlang1011@126.com
引用本文:
安朗, 张昕然, 葛粟粟, 李扬. 整体吊装钢管混凝土系杆拱桥施工风险非线性模糊评判[J]. Journal of Highway and Transportation Research and Development, 2016, 10(2): 47-52.
AN Lang, ZHANG Xin-ran, GE Su-su, LI Yang. Nonlinear Fuzzy Evaluation of the Construction Risk of Integral Hoisting of CFST Tied-Arch Bridges. Journal of Highway and Transportation Research and Development, 2016, 10(2): 47-52.
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