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盾构隧道施工会对邻近既有建筑物产生潜在的安全风险。首次将模糊层次分析法引入对邻近盾构隧道的建筑物安全风险评估中。分析建筑物和隧道的影响因素,遴选出主要因素作为模糊层次评估方法的影响因子,建立了邻近盾构隧道的建筑物风险指标体系。采用专家打分法确定层次分析中各风险评价指标的权重,建立邻近盾构隧道的建筑物风险模糊层次评估模型。运用本文方法,对武汉长江盾构隧道上方的武汉理工大学电教楼进行了风险评估,得到的评估结果符合实际工况,验证了本文方法的可靠性。
Shield tunnel construction will have potential safety risks to the adjacent existing buildings. For the first time, fuzzy analytic hierarchy process (AHP) is introduced into the assessment of building safety risk of adjacent shield tunnels. The influencing factors of buildings and tunnels are analyzed. The main factors are selected as the influencing factors of the fuzzy hierarchy assessment method, and the building risk index system of adjacent shield tunnels is established. The expert scoring method is used to determine the weight of each risk evaluation index in the AHP, and the fuzzy hierarchy assessment model of the building risk of the adjacent shield tunnel is established. Using this method, the risk assessment of Wuhan Polytechnic University audio-visual building above Wuhan Yangtze River Tunnel is carried out. The evaluation results are in accordance with the actual conditions and the reliability of the method is verified.