ABAQUS软件在基于性能的地震时程分析上的应用

发布时间：2018-02-19 17:49

本文关键词： 地震超高层建筑 ABAQUS 基于性能设计时程分析结构模型转换二次程序　出处：《浙江大学》2014年硕士论文　论文类型：学位论文

【摘要】：超高层建筑的抗震设计已从传统的承载力设防设计逐渐转向了更精细化的抗震性能设计。为满足实际高层建筑多层次、过程化的性能目标,有必要对结构体系进行少遇或罕遇地震下的更为真实精细的全过程动力弹塑性时程分析。高性能的通用非线性分析软件通常是实现这种全过程精细分析的主要工具,那么,如何有效应用该工具开展精细化分析,以检验相关性能目标是否达到预设目标,是实现基于性能设计亟需解决的难题之一。本文以一幢位于8度设防区域、216m高的昆明螺蛳湾中心楼超高层建筑为工程案例。首先根据性能化设计思想确定了该建筑的抗震性能指标；然后应用ABAQUS软件对该建筑进行了罕遇地震下的弹塑性全过程行为的非线性分析,获得了结构在大震作用下的基底剪力、剪重比、层间位移角、顶点位移,以及核心筒剪力墙、钢管混凝土柱和其他钢构件、加强层钢支撑、钢筋混凝土楼板等的塑性变形与损伤情况、钢筋屈服情况等弹塑性动力响应和损伤模式。并对照预定的性能指标对结构体系进行了全方位的性能评价。论文最后基于ABAQUS平台开发了将常用结构设计模型转化为ABAQUS模型的自动转换程序,并进行了实例检验和应用。论文结果显示,合理应用ABAQUS软件能够实现超高层建筑基于性能设计的弹塑性精细化有限元分析,检验结构在罕遇地震作用下的性能目标；本文开发的ABAQUS结构模型转换程序不仅具有很高的计算效率,而且可获得与手动转换十分一致的结构弹塑性受力和变形精细分析结果。
[Abstract]:The aseismic design of super high-rise building has gradually changed from the traditional design of bearing capacity fortification to the more detailed seismic performance design. It is necessary to carry out a more realistic and precise dynamic elastoplastic time-history analysis of structural systems under rare or rare earthquakes. High performance universal nonlinear analysis software is usually the main tool to realize this kind of full-process fine analysis. How to use the tool effectively to carry out fine analysis to check whether the performance target can reach the preset target is one of the most difficult problems to be solved in the implementation of performance-based design. In this paper, a super high-rise building located at 216m high in an 8-degree fortification area is taken as an engineering case. The aseismic performance index of the building is first determined according to the performance-based design idea. Then the nonlinear analysis of the elastoplastic behavior of the building under rare earthquake is carried out by using ABAQUS software, and the base shear force, shear weight ratio, interstory displacement angle, vertex displacement and core tube shear wall are obtained. Plastic deformation and damage of concrete-filled steel tubular columns and other steel members, reinforced steel supports, reinforced concrete floors, etc. The elastoplastic dynamic response and damage mode of steel bar, such as yield condition, etc. The comprehensive performance evaluation of the structure system is carried out in comparison with the predetermined performance index. Finally, based on the ABAQUS platform, the commonly used structural design model is developed to transform the structural design model into one. For the automatic conversion of the ABAQUS model, A case study and application are carried out. The results show that the application of ABAQUS software can realize the elastic-plastic fine finite element analysis of super high-rise building based on performance design, and test the performance target of the structure under rare earthquake. The ABAQUS structural model conversion program developed in this paper not only has high computational efficiency, but also can obtain the fine analysis results of elastic-plastic force and deformation of structure in accordance with manual transformation.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU973.31

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