摘要
以西安地铁2号线和6号线运营对钟楼台基的振动影响为背景,研究地铁运行振动作用下钟楼台基的动力响应规律。根据铁科院提供的可用于计算的列车荷载施加在轨道仰拱结构上,得到土层和台基中的振动响应。采用ABAQUS软件对地铁列车荷载作用下不同运行工况、不同加固方案下的隧道-加固桩-土体-台基体系进行了三维有限元计算,对西安地铁2号线和6号线在采取不同运行方式和加固措施下对台基的振动响应进行了计算和对比分析,从而得到各运行方式和加固措施下的振动效果。文中的研究方法为研究列车振动对邻近建筑的影响预测提供了重要参考。
Based on predictions of the vibration impact on Bell Tower foundation induced by Metro Line 2 and Line 6 in Xi'an,dynamic responses of the foundation of Bell Tower is studied.The stability of the wooden structure and the foundation of Bell Tower are assessed.Then,the excitations provided by China academic of railway science are applied on the inverted arch structures to obtain dynamic response in the soil and foundation of Bell Tower.Based on the dynamic finite element model of ABAQUS,tunnel-vibration isolation pile-soil-foundation of Bell Tower system in different cases are analyzed.Calculation and comparative analysis for response of receiver points on the foundation of Bell Tower induced by metro line 2 and line 6 are made in many cases to analyze the vibration reduction effects for the different running modes and maintenance measures.The results attained would be significant to the prediction of the vibrating effects on buildings induced by train running on metro.
出处
《世界地震工程》
CSCD
北大核心
2010年第S1期177-181,共5页
World Earthquake Engineering
关键词
地铁列车振动
动力有限元
钟楼台基
弹簧浮置板
运行速度
metro train induced vibrations
dynamic finite element
foundation of Bell Tower
spring floating slab
running speed
