中国安全科学学报 ›› 2025, Vol. 35 ›› Issue (S1): 93-96.doi: 10.16265/j.cnki.issn1003-3033.2025.S1.0015

• 安全工程技术 • 上一篇    下一篇

基于DBN的桥梁顶升改造施工安全风险分析

吴昊1(), 董凯1, 王成虎1, 尤洋2,**()   

  1. 1 青岛路桥建设集团有限公司, 山东 青岛 266000
    2 山东交通学院 交通土建工程学院, 山东 济南 250357
  • 收稿日期:2025-01-20 修回日期:2025-03-22 出版日期:2025-09-02
  • 通信作者:
    ** 尤洋(1995—),男,山东潍坊人,博士,副教授,主要从事桥梁施工方面的研究。E-mail:
  • 作者简介:

    吴昊 (1985—),男,山东莱西人,本科,高级工程师,主要从事桥梁施工方面的工作。E-mail:

    董凯, 高级工程师

    王成虎, 高级工程师

    尤洋, 副教授

  • 基金资助:
    山东省自然科学基金资助(ZR2024ME215); 山东省自然科学基金资助(ZR2023QE324)

Safety risk analysis of bridge jacking renovation construction based on DBN

WU Hao1(), DONG Kai1, WANG Chenghu1, YOU Yang2,**()   

  1. 1 Qingdao Highway & Bridge Group Co., Ltd., Qingdao Shandong 266000, China
    2 School of Transportation and Civil Engineering, Shandong Jiaotong University, Ji'nan Shandong 250357, China
  • Received:2025-01-20 Revised:2025-03-22 Published:2025-09-02

摘要: 为合理控制桥梁顶升改造施工风险,提出一种基于动态贝叶斯网络(DBN)的桥梁顶升改造施工安全风险分析方法。考虑到桥梁顶升改造施工中存在的多变风险因素及其随时间的动态变化特性,从“人、物、环境、管理”4个方面建立风险指标体系,并引入时间维度构建DBN模型,利用模糊理论和专家评分法量化网络节点的概率,随后通过Leaky Noisy-or Gate扩展模型修正条件概率;通过建立的DBN网络模型进行双向推理,动态分析桥梁顶升改造施工的安全风险。结果表明:桥梁顶升施工的关键风险因素是环境因素,而物的因素影响较小;天气、千斤顶故障、现场施工管理水平以及下部结构不稳定是敏感度最高的风险因素,应该在桥梁顶升改造施工过程中进行重点防范。

关键词: 动态贝叶斯网络(DBN), 桥梁顶升改造施工, 施工安全, 风险分析, 条件概率, 风险因素

Abstract:

To effectively control the risks associated with bridge jacking renovation construction, a safety risk analysis method of bridge jacking renovation construction based on DBN was proposed. By considering the diverse risk factors and their dynamic changes over time in bridge jacking renovation construction, a risk index system was established from four aspects: human, material, environmental, and management. A DBN model was constructed by incorporating the time dimension, with network node probabilities quantified using fuzzy theory and expert scoring. The conditional probabilities were refined through the Leaky Noisy-or Gate extension model. Bidirectional inference was performed using the established DBN model to dynamically analyze the safety risks of bridge jacking renovation construction. The results indicate that environmental factors are the primary risk contributors to bridge jacking renovation construction, while material factors have a lesser impact. Weather, jack failure, on-site construction management, and substructure instability are identified as the most sensitive risk factors, warranting focused prevention measures during bridge jacking renovation construction.

Key words: dynamic Bayesian network (DBN), bridge jacking renovation construction, construction safety, risk analysis, conditional probability, risk factor

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