大跨径悬索桥施工风险评估的集对分析方法

发布时间：2019-06-13 12:08

【摘要】：为了更好地进行桥梁施工安全风险管控,本文提出了一种基于集对分析的大跨径悬索桥施工风险评估方法。首先,详细分析了桥梁施工过程中主要的风险源,建立了多层次评价指标体系;然后,针对传统层次分析方法在计算权重方面的不足,提出了基于SPA-IAHP的赋权方法,确定各评价指标对桥梁风险的影响程度;最后,针对各评价指标确定与不确定信息并存的特点,以集对分析理论为基础,建立了基于n元联系数的桥梁施工风险评价模型,并将其应用到武汉杨泗港长江大桥上部结构施工风险分析。结果表明:杨泗港长江大桥上部结构施工风险程度综合判断结果为Ⅲ级"中等风险",处于有条件接受范围,为进一步风险管理提供指导依据。
[Abstract]:In order to manage the safety risk of bridge construction better, a construction risk assessment method of long-span suspension bridge based on set pair analysis is proposed in this paper. Firstly, the main risk sources in the process of bridge construction are analyzed in detail, and the multi-level evaluation index system is established. Then, in view of the shortcomings of the traditional AHP method in calculating the weight, the weighting method based on SPA-IAHP is put forward to determine the influence degree of each evaluation index on the bridge risk. Finally, according to the characteristics of the coexistence of each evaluation index determination and uncertain information, based on the set pair analysis theory, a bridge construction risk assessment model based on n-element connection coefficient is established and applied to the construction risk analysis of the superstructure of Yangsi Port Yangtze River Bridge in Wuhan. The results show that the comprehensive judgment results of the superstructure construction risk degree of Yangsi Port Yangtze River Bridge are grade III "medium risk", which is in the conditional acceptance range, which provides guidance for further risk management.
【作者单位】：武汉理工大学道路桥梁与结构工程湖北省重点实验室;
【基金】：国家自然科学基金(51378405) 中国工程院重点咨询研究项目(2016-XZ-13)
【分类号】：U445.1;U448.25

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