Analysis Of The Evaluation Of Environment Vibration And Settlement Induced By The Subway

As a main part of city traffic system, the significance of the subway is coming increasingly. Meanwhile, the academic circles and project boundary have pay more and more attention to the impact of vibration over environment all around and buildings induced by the subway' running. The problem research priority is to evaluate this effect. The main part works as follows:1,Sum up the present status and research methods about the environment vibration induced by the subway of home and abroad systematically2,As regards to the research of the evaluation criterion of the environment vibration induced by the subway, the foreign standard and codes are more appropriate and strict than the national, in the aspect of the building partition and the range boundary of the environmental assessment. This paper has got a few conclusions that can provide a reference to the working out of our country' codes.3,There is still no unified standard in the homeland about the evaluation method of the environment vibration induced by the subway' running, the paper studies the《Transit Noise and Vibration Impact Assessment》, which was worked out by the Federal Transit Administration and lead in a new kind evaluation method. The method is based on the measured value, and eliminated the effect of the geological conditions. It is an objective method. The paper also discussed the shortcoming of the method. In the test of the planning subway, the method neglect the attenuation of the tunnel, so there needs a further amendment to the test in details.The surface settlement and trench landslide induced by the construction of the subway occur frequently, which have brought about grave economic losses and social influence, but there is short of the corresponding norm and rules in the homeland at present about the range boundary of the surface settlement and the building partition. Owing to this, the paper does a job as follows:1,There is still no unified standard in the homeland about the range boundary of the effect of subway' construction, using 12 group of measured surface settlement value collected in different areas, the paper verified the simple formula' accuracy. Using the collected settlement test data, the paper proved the serviceability and the accuracy of the peck formula in the environment impact assessment.2,There is still no unified standard in the homeland about the building partition in the affect area, on the base of summing up the evaluation standard of building deformation and division of protective grade, the paper suggested (The chart of the building protective grade division in the affect area of tunnel construction in the city).