[Objective]The vibration impact of ground traf-fic on nearby ancient buildings is becoming increasingly promi-nent.It is necessary to analyze the influence of ground traffic and the proposed Jinan Metro Line 6 on the vibration character-istics of the ancient Jiangxi Guild Hall buildings along the line under the typical soil geological conditions of Jinan,so as to e-valuate the impact of traffic environmental vibration on ancient buildings of trade guild halls of Ming and Qing dynasties.[Method]The ground vibration response under the ground traffic load is measured by the measuring points inside and out-side the main hall of Jiangxi Guild Hall,and the influence of the proposed Metro Line 6 on the ancient buildings is calculated by the established tunnel-soil-main hall building model for Jian-gxi Guild Hall.The vibration level of the buildings under the separate actions of the above two traffic loads is evaluated ac-cording to GB/T 50452-2008 Technical Specification for Pro-tection of Historic Buildings against Man-made Vibration.[Result & Conclusion]Under the action of ground traffic load,the vibration of the Jiangxi Guild Hall complex is mainly vertical.The main vibration frequencies along the road direc-tion in different positions inside the building main hall are all greater than those in the direction perpendicular to the road.Under the action of metro loads,the vibration of the Jiangxi Guild Hall building is mainly vertical.The horizontal vibration at the top of the columns decreases compared to that at the bot-tom of the column,while the vertical vibration increases.The horizontal high-frequency vibration attenuates relatively quick-ly,while the low-frequency vibration attenuates relatively slowly.Both the vertical high-frequency and low-frequency vi-brations attenuate relatively slowly.Under the action of traffic loads and metro loads,the vibration level of the Jiangxi Guild Hall meets the provisions on the vibration limits of ancient wooden structures in the GB/T 50452-2008.
关键词
古建筑/地面交通/地铁/振动特性/振动水平/现场实测/数值模拟
Key words
ancient building/ground traffic/metro/vibra-tion characteristics/vibration level/on-site measurement/nu-merical simulation
维普
万方数据