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基于环境随机激励原理,对上海地铁一号线某重要路段进行现场大型模态测试试验,并通过理论和试验分析手段,根据现场时程响应数据,分析得到软土-隧道体系的自振频率,可为进一步的相关动力学分析提供计算参数.
Based on the principle of random excitation in the environment, a large-scale on-site modal test was conducted on an important section of Shanghai Metro Line 1, and the natural frequency of the soft soil-tunnel system was obtained through theoretical and experimental analysis. The calculation parameters can be provided for further relevant kinetic analysis.