| For the past few years,the underground railway is growing by leaps and bounds in our country.Currently there are more than 50 cities across the country which have or plan to construct the subway lines.At the same time,we cannot ignore the vibration impact on the environment,especially should pay attention to the ancient architecture.In this paper,for the actual working condition for Shijiazhuang subway line one within a certain period of interval,the author use finite element analysis software MIDAS-GTS to set up the tunnel-soil-building-three-dimensional finite element simulation model,while considering dynamic effect among the subway cars,track structure,soil,and surface construction.Within the internal,it studies the vibration response and the vibration propagation rule of the subway traffic on the surrounding soil surface,analyzes the vibration interference of the ancient temple which located near the subway line,and suggests reasonable vibration reduction measures.The main research results have the following several aspects:(1)Establish finite element model.Through selecting surface vibration picking point on the model,the author analysis the vibration response of surface vibration picking point specifically in the subway operation process,summarize vibration response of soil on the surface of the horizontal and vertical direction.(2)By changing the parameters of subway operation,the author gets the subway vibration response of the surrounding soil and subway operation vibration impact on the ancient temple in different running conditions;in opposite driving conditions,the paper analyzes the propagation rule of soil vibration and impact on the vibration of the ancient temple in different running speed.(3)Analyzing the subway's vibration response of the temple in the most unfavorable conditions.Setting the reasonable vibration reduction measures to test the anti-vibration effect of vibration reduction measures of temples. |
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