地震作用下隧道易损性的整体风险评估

HOLISTIC RISK ASSESSMENT OF TUNNELING VULNERABILITY DUE TO SEISMIC LOADS

综合考虑影响隧道安全的各主要因素,运用整体风险分析法评估隧道在地震作用下的易损性。使用层次分析法,筛选影响隧道易损性的因子;运用概率统计方法,计算隧道易损性的权重组合值,绘出隧道的风险评估图;通过收集的隧道震害资料对该方法进行验证。结果表明,运用整体风险分析法评估地震作用下隧道的易损性是完全可行的。

Based on the research summarized,important influencing factors of tunnel considered,the vulnerability assessment of tunneling engineering under the seismic loads is studied by the holistic risk approach.This paper establishes a risk assessment model using the analytical hierarchy process as a screening tool,and commonly combines statistical-based forecasting tools to obtain a rehabilitation estimate of tunneling,then provides a risk assessment map.A preliminary verification of the proposed model is conducted by comparing predictions with data collected during the earthquakes.It is shown that holistic risk analysis approach for assessing the vulnerability of tunneling is a viable method for tackling this complex,multivariable problem.