Vibration Test Analysis And Particularity Research Of Subway Upper Property

With the rapid development of urban rail construction in China,the relationship between the subway construction land and the urban land resources is becoming increasingly tense.The upper and the surrounding space of the subway parking lot is fully utilized.The upper cover property development is intensive land use,the efficiency of urban land use is higher,and the new operating profit is created.Good urban rail transit operation mode.However,the subway train runs frequently in the upper cover of the subway,and the vibration of the building structure caused by the train seriously affects people's life and work in the building on the upper cover of the subway.It poses a great challenge to the usability,comfort and safety of the upper cover building,and the maintenance of the equipment in the yard and the maintenance of the fine instruments..Therefore,it is of great significance for reducing vibration and noise pollution,improving the quality of the upper cover property and surrounding environment,and has great significance to the design and practical engineering of the proposed subway cover property.The reference value.On the basis of the analysis of the vibration particularity and test characteristics of the building in the underground double layer subway parking lot,this paper systematically analyzes and studies this type by the method of field test,time domain frequency domain analysis and data fitting.The vibration law of the whole building in the iron parking lot.The main work of the paper is as follows:1.The particularity of the upper cover property of the underground double deck subway parking lot is studied and analyzed,and the vibration test characteristics of the upper cover of the underground double deck subway parking lot are given by combining the vibration test types of the environmental vibration test,the subway vibration source test and the subway vibration attenuation test.2.According to the test characteristics of the subway vibration and the national related test specifications,the field test on the upper cover of the underground double deck subwayparking lot has been completed,and the accurate and effective data have been obtained.3.From the point of view of the time domain and frequency domain,this paper analyzes the various sections of the upper cover property of the subway parking lot,and combines the standard of domestic environmental vibration standard to evaluate the vibration of the upper floor of the underground double deck subway parking lot built in China,and gives some suggestions and suggestions on the prevention and control of the vibration reduction.4.Through the data fitting,the relationship between the ground vibration of the underground double deck subway parking lot and the location function of the measuring point is established,and the characteristics and the size law of the vibration propagation in the upper floor of the underground double deck subway parking lot are analyzed.