3-D Mechanical Analysis Of The Intricate Structure In Tianfu-Square Underground Complex

Based on large underground complex structural engineering in Chengdu Tianfu Square, three-dimensional analysis is performed. underground complex structure in Tianfu Square was buried the deepest in history of Chengdu, and the area's largest underground project, the underground space for the four-story complex interchange as well as cross-space, another tangent space stagger arrangement. The first layer is sank square and commercial areas, the second floor of the Office of Station No. 1 line and car parks, third level underground station for Line 2 and the platform of Line 1, the fourth floor for the underground stations of Line 2. Bottom layers buried depth, size inconsistency. In terms of loading, structure, structure of the layout, Tianfu Square underground complex is so complex that the traditional design methods can not meet the design requirements, it is necessary for the underground complex to perform the three-dimensional structural numerical analysis.Through three-dimensional simulation of the overall modeling analysis of Tianfu Square underground complex by the use of large-scale finite element analysis software ANSYS, a variety of condition of underground structures in various load comprehensive portfolio of force are accessed, to the design of complex Mechanical problems and design parameters of the problem are resolved, and the basis for the design work and guidance are provided.Thesis research results are as follows:(1) The anti-floating programme of Pull-out pile structure is better able to meet the overall anti-floating requirements of the Tianfu Square underground complex structure;(2) The results of the internal force of the beam structure, board in Tianfu Square underground complex layers are accessed, and its axial force and moment, and the safety factor, are analyzed;(3) The influences of the Wall and the beam that result from the intersection of different structure are analyzed; (4) The comparative analysis of the overall structure form are performed, and the settlement set up problem of the different intersection structure along the side wall is resolved;(5) The temperature-stress analysis of the sank square is performed, and the results show the influence of the temperature action on structure is great, and it should take corresponding measures of insulation cracking.