重庆市渝中区高九路大底盘多塔高层结构静动力数值分析研究

发布时间：2019-02-24 15:55

【摘要】：本文应用ANSYS有限元分析软件对重庆市渝中区高九路大底盘多塔高层结构建立准确的有限元模型，研究大底盘多塔高层结构在静、动力荷载作用下结构特有的响应特征，特别是研究该结构在地震作用下的响应。本文的工作主要包括：（1）分析了大底盘多塔结构体系的形式与特点，提出了大底盘多塔结构计算模型以及ANSYS有限元模型建立的要求与方法。（2）对建筑结构的梁、柱、楼板以及剪力墙等构件的尺寸与连接问题进行了解决，实现了将大底盘多塔结构准确的转化为ANSYS有限元模型。（3）本论文的建筑结构ANSYS模型的单元数有七万多个，节点数有五万多个，模型复杂，，建模工作繁琐。成功地解决了ANSYS有限元模型节点耦合问题。（4）完成了对结构ANSYS有限元模型施加自重荷载与风荷载等荷载组合。得出大底盘多塔高层结构在静力荷载作用下的响应特征。（5）通过模态分析与反谱分析，得到大底盘多塔结构在地震作用下的响应。通过结构剪力墙的位移矢量图，分析了结构剪力墙的偏移和扭转.通过结构的节点位移曲线图，研究了大底盘多塔结构塔楼之间的相互协调性。（6）通过结构在不同的地震波双向作用下的结构动力时程响应分析,得出大底盘多塔结构的位移响应和层间位移角的变化趋势。通过比较分析，得出大底盘多塔结构中各塔楼水平方向响应变化的随机性。（7）分析比较该结构的内力云图与内力数值以及剪力墙的抗剪切性能，得出剪力墙的设计满足结构抗震设计，同时得出剪力墙与结构的整体稳定性。通过对重庆市渝中区高九路大底盘多塔高层结构进行ANSYS分析，从量化上准确地反映了大底盘多塔高层结构在静、动力荷载作用下结构的响应，得出了大底盘多塔结构区别于其他结构所特有的建筑结构特点。论文的研究方法与结论，为四川地区类似体型的高层建筑结构的设计和研究提供了参考依据。通过准确的量化数值分析，可为建筑结构稳定性分析与安全检验提供准确依据。该项研究对于大型建筑结构具有十分重要的安全意义以及实用价值。
[Abstract]:In this paper, the finite element analysis software ANSYS is used to establish an accurate finite element model for the high-rise structure with large chassis and multi-tower in Gaojiulu Road, Yuzhong District, Chongqing, and to study the special response characteristics of multi-tower high-rise structure with large chassis under static and dynamic loads. In particular, the response of the structure to earthquake is studied. The main work of this paper is as follows: (1) the form and characteristics of multi-tower structure system with large chassis are analyzed, and the calculation model of multi-tower structure with large chassis and the requirement and method of establishing ANSYS finite element model are put forward. (2) the dimension and connection of beam, column, floor and shear wall of building structure are solved, and the multi-tower structure with large chassis is transformed into ANSYS finite element model accurately. (3) the ANSYS model of building structure in this paper has more than 70,000 units and more than 50,000 nodes. The model is complex and the modeling work is tedious. The node coupling problem of ANSYS finite element model is solved successfully. (4) the combination of deadweight load and wind load on the ANSYS finite element model is completed. The response characteristics of multi-tower high-rise structures with large chassis under static load are obtained. (5) through modal analysis and inverse spectrum analysis, the response of multi-tower structure with large chassis under earthquake action is obtained. The deflection and torsion of the structure shear wall are analyzed by the displacement vector diagram of the structure shear wall. The coordination of tower towers with large chassis and multi-tower structure is studied by means of the displacement curve of the nodes of the structure. (6) by analyzing the dynamic time-history response of the structure under different seismic waves, the variation trend of displacement response and interstory displacement angle of multi-tower structure with large chassis is obtained. Through comparative analysis, the randomness of the horizontal response of each tower in the multi-tower structure with large chassis is obtained. (7) by analyzing and comparing the internal force cloud diagram and the internal force value of the structure and the shear resistance performance of the shear wall, it is concluded that the design of the shear wall meets the seismic design of the structure, and the overall stability of the shear wall and the structure is obtained at the same time. Based on the ANSYS analysis of the multi-tower high-rise structure of Gaojiu Road, Yuzhong District, Chongqing, the response of multi-tower high-rise structure with large chassis under static and dynamic loads is accurately reflected in quantification. The characteristics of large chassis multi-tower structure are obtained, which are different from other structures. The research methods and conclusions provide a reference for the design and research of tall building structures of similar shapes in Sichuan area. Through the accurate quantitative numerical analysis, it can provide the accurate basis for the stability analysis and safety inspection of the building structure. This research has very important safety significance and practical value for large-scale building structure.
【学位授予单位】：沈阳大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU973.21

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