高架轻轨运行激励下建筑物隔振有限元分析  

Numerical Analysis on Vibration Isolation of Buildings Under Rail Transit Viaduct

作　　者：陈景涛[1] 

机构地区：[1]武汉理工大学理学院,湖北武汉430070

出　　处：《华中科技大学学报（城市科学版）》2010年第1期5-8,共4页Journal of Huazhong University of Science and Technology

基　　金：国家自然科学基金(50809017)

摘　　要：高架轻轨运行引起的剧场内结构噪声将超过33dB(A),不满足噪声评价曲线NR-25小于30dB(A)的规定。利用实测桥墩处的加速度数据作为输入载荷,使用ANSYS有限元软件对拟建场地的环境振动进行三维有限元数值模拟,模拟结果与实测结果吻合,表明有限元模型是可靠的。建立了采用钢筋混凝土连续墙隔振措施的有限元分析模型,数值计算结果表明隔振效果较好,可以保证剧场的正常使用。The structural noise in the theater induced by rail transit viaduct exceeded 33dB（ A）, which didn＇ t satisfy the noise evaluation curve NR-25. Numerical simulation of environmental vibration around the projected field was carried out by Ansys, in which the exciting force was input from the vibration data measured at the foot of the pier. The results were consistent with the measured data that indicated the reliability of the numeri- cal model. The vibration isolation model which used reinforced concrete continual wall as vibration isolation measure was established. The simulation results show that the effect of vibration isolation wall is satisfactory, which can be made full use of the theater.

关 键 词：高架轻轨 振动 隔振 数值模拟 

分 类 号：TU311.3[建筑科学—结构工程] TU352.12