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Sustainable development and the continuous improvement of the living standards of residents of urban construction in China , the use of underground space ( such as : basements , underground garage, warehouse , underground shopping malls , underground tank , etc.) has become a trend . In the process of the construction of the underground construction , involving precipitation , foundation pit , subsidence control , anti-floating , buried depth , seepage and other factors . Under normal circumstances , the control variable method to study the impact of a single factor in the overall infrastructure . Foundation engineering , however , has a strong environmental effects and spatial and temporal effects features , is a dynamic interaction between various factors , mutual restraint systems engineering , control variables , and apparently did not consider the interaction between the various factors . The destruction of the underground structure is the result of many factors . Qinhuangdao ground floor of a building structure construction process and the destruction occurred as the research object , using the finite element structural analysis software , to simulate the construction process of the structure factors . First, the analysis of the domestic and international underground structures destroyed Research , summarizes the underground structure of anti- float Research and engineering measures . The study found that most of the destruction of the underground structure simulation is based on the buoyancy of the role of the underground structure , seepage effect only for the excavation process . Underground structural damage combined effects of multiple factors , not yet. Therefore , it is determined as the ideas in this article , from the actual engineering of the destruction of the underground structures under a variety of factors studied . Second , we investigated the failure pattern of actual engineering structures , determine reasonable constitutive parameters characterize the destruction of the underground structure of the state , in order to establish a reasonable three-dimensional finite element model , and thus the numerical simulation analysis of the impact of various factors on the underground structure , and values The simulation results are compared to actual engineering data , the researchers found that the simulation results of the relevant law and the laws of engineering test data . Therefore , the simulation results for engineering reference . Finally, the variables in the design , do the simulation test of the four factors and three levels orthogonal range analysis , come to the influence of a combination of different factors at different levels of internal forces and deformation of underground structures . Then, consider the interaction between the factor level interaction analysis .
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