Research On Dynamic Analysis Of Complex Build Structure

With the rapid development of economics and urbanization in our country, the need for high-rise or super high-rise residential construction in cities is keeping on enlarging. In this case, it is important for the whole anti-collapse performance to construction structure under the big quake function. Speaking of the high-rise construction, the secure design principal aspect resists earthquakes the fortification, there is a rule in seismic design code in china about the structural elasto-plastic seismic response analysis of tensility structure and structure beyond the criterion.It is very complicated when Complex build structure is under deformation and stress,and there are still many problems ,such as the choosing of dimension, the establishing of model, the choosing of parameters ,which the criterion haven't regulated. Therefore, to this kind of structure, in the engineering design generally only depending on designs personnel's experience to carry on in the nature the assurance, lacks the theory basis. Under macroseism function structure anti-collapse ability, the structure relation establishment to the structure overall performance contribution and the influence, all is especially the technical difficult problem which in the structural design is unable to judge. Therefore, this article the complex build structure dynamic performance has conducted the research in view of the earthquake function, Mainly includes two aspects:First, the dynamic characters of complex tall building in rare earthquake. Second,how to optimize the design of complex tall building in rare earthquake.This paper will analysis elasto-plastic of the practical complex build structure under rare earthquake by means of PKPM and ANSYS. The structure we will study is particular and it is a super high-rise structure. At the top of the structure there are a grid, which connects three independent elements. The paper mainly compares results. Through the comparing way, four points will be illustrated as follow: (l)the impacts of grid on the entire structure; (2) the differences of results between PKPM and ANSYS; (3) How chooses the appropriate earthquake wave; (4)through changing one element's rigidity in the three, and then carrying out dynamic analysis on structure , Then explores whether can achieve the optimized design to the structure using the computer simulation analysis the goal.Through analyzing and studying , this paper gained several conclusions as follow:(1)Exerts the suitable relation mutually in the independent structure, may enhance the structure the integrity, strengthens its earthquake resistance performance;(2) ANSYS in the three dimensional simulation analysis can reflect well the structure the real situation, the analysis result surpasses the PKPM software;(3) In ANSYS, causes the level to the artificial wave and the actual wave which the structure produces the biggest displacement and the level the shearing force contrast result indicated that,Appropriate actual wave energy real response structure dynamic performance;(4) When some tower body rigidity change, analyzes it to the structure overall performance influence, seeks causes the structure performance most superior geometry size. The result indicated that, carries on the optimized design using the computer software to the structure is feasible. Such exploration has certain guiding sense to the similar structure conceptual design.The research analysis result indicated, during the process of analyzing dynamic respondence in rare earthquake ,it is necessary to carry out 3D analysis for complex tall building made of different kinds of materials; May carry on the optimized design regarding the complex build structure through the computer simulation analysis method, provides the reference for the actual engineering design.