| Xi’an ground fissures has become a unique geological disasters in this city, resulting inuneven ground subsidence.Scholars study of ground fissure is very extensive, but there isfew research on the influence of uneven settlement on upper structure and the design of thestructure in ground fracture area.Based on the frame structure is widely used in construction projects as the researchobject in this paper, using the research methods of theoretical analysis and finite elementanalysis. through avoidance distances in different structural elastic analysis to study internalforce and deformation of the frame structure that whether considering the foundation beam.and made the preliminary exploration of the design method of frame structure in groundfracture area.First,in this paper, using the finite element software SAP2000to establishthree-dimensional frame model, and using the displacement loading method to simulate cracktraditional caused by uneven settlement, studied6layer framework of rules and5layer xxsecondary school buildings in Xi’an (frame structure) through avoidance distances in differentstructural elastic analysis to study internal force and deformation of the frame structure thatwhether considering the foundation beam. Secondly, through the analysis of the results get theinternal force variation of regulatory framework in the single uneven settlement, but alsocompared the change of the displacement and internal force with foundation beam and nofoundation beam. The last, has made the contrast in ordinary location and ground fracturearea’s endogenic force and reinforcing bars to five school buildings, obtains structureendogenic force ratio curve under ordinary location and ground fracture area. And putforward the design method of frame structure under the conditions of considering the unevensettlement.The research can enrich the frame structure design theory in the ground fissure, as wellas provide a reference for its engineering design. |
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