Study On Earth Pressure Of BeiLing Station Passageway Foundation Pits In Shenyang Subway Line No.2

As the rapid development of Chinese economic, many cities started to build subway projects. Subway construction involves a large number of foundation pits. Therefore, the correct calculation of the earth pressure on the supporting structures becomes a quite significant topic.The existed investigative results on earth pressure calculation are kinds of simplified calculations in which only several influencing factors were considered. For the restrictions caused by conditions on the ground, Many foundation pits projects showed some features of clear spatial effects, complex stress characteristics, multiplex affecting factors, it often can not be suit for the applicable conditions of the existed earth pressure theory very well.On the background of BeiLing Station Passageway construction in Shenyang Subway Line No.2, This paper calculated the project through three kinds of methods (Classical Method, Elastic Resistance Method and Finite Element Method) and two kinds of software (MIDAS-GTS, F-SPW) at the same time,compared these calculated results,analysised the differences and found out their impact factors. Through counting and analyzing the results of three-dimensional Numerical simulation and analysis in detail, summing up regulations and the general trend of soil and engineering structures displacement and internal force, proposing a simple calculating model that is in accordance with the actual characteristics of the project for the calculation and Compareing its results with numerical simulation results to verify the reasonableness of the model。So the problem which is how to calculate the earth pressure under the complexity of obvious spatial effects and a variety of environmental conditions can be solved and reference experiences on the calculation of earth pressure can be provided to similar Follow-up projects.