地铁运营引起的西安钟楼振动响应研究

Dynamic Response of Xi′an Bell Tower Under the Situation of Metro Train Running

以西安地铁二号线运营对钟楼的振动影响为背景,采用三维整体有限元动力模型,研究地铁运行振动作用下钟楼的动力响应规律。地铁运营后的振动监测表明,钟楼台基和木结构振动速度幅值分别为0.131和0.060 mm/s,满足《古建筑防工业振动技术规范》(GB/T 50452—2008)的要求。将监测值与理论计算值进行比对分析,对原计算模型进行了校核。

Based on the vibration impact predictions on Xi＇an Bell Tower by Metro Line 2, the regularities of dynamic response are studied by three-dimensional dynamic finite element mode. The vibration of Bell Tower is monitored on diffirent conditions after mrtro train running. Monitoring results show that Bell Tower of wood structure and foundation vibration velocity amplitudes are 0. 131 and 0. 060 mm/s. The vibration velocity values of Bell Tower agree with the requirement of specification （ Technical Specifications for Protection of Historic Buildings Against Man-Made Vibration, GB/T 50452 - 2008 ）. Original computational model is adjusted by comparing and analyzing the resuhs between monitor and caculation.