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A Numerical Analysis Method for Spacial Effect of Underground Structures

Peng Limin;Kuang Guoneng  
Based on the theory of FEM for spacial thick plate, a Computer program for linear-elastic finite elements, appropriate to spacial effect analysis of underground structure is developed. The results obtained by this method are compared with those obtained by plane hypothesis of the structure. It shows that (1) the spacial effect of underground structure should not be ignored, (2) the results calculated by plane hypothesis method in formerly structure design are quite different from that for loading state of real structure and can't be considered as on the safe side. The numerical method described in this paper gives the results close to that in practice and is convenient for builders' use.
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