非加劲低屈服点钢板剪力墙结构受力行为研究

发布时间：2018-06-28 19:08

本文选题：非加劲低屈服点钢板剪力墙结构 + 循环本构模型　；参考：《北京交通大学》2017年硕士论文

【摘要】：低屈服点钢板剪力墙结构是一种高延性、高耗能结构体系,能够满足高层及超高层建筑的发展需要,实现“高性能结构形式与高性能材料相结合,承重构件和耗能元件相结合”的设计理念,为高层及超高层建筑结构延性抗震提供很好的解决方案。但目前国内外对低屈服点钢板剪力墙结构的试验研究和理论研究较少,没有形成完整的理论分析体系,缺少相应设计方法。本文从低屈服点钢材的材料性能出发,采用试验研究和数值模拟相结合的方法,对非加劲低屈服点钢板剪力墙结构受力行为进行系统研究,开展边缘框架作用分析,确定了边缘框架柱柔度系数限值及内嵌钢板承担的剪力比例,并给出设计建议。本文的工作主要包含以下几个方面:(1)完成35个低屈服点钢材LYP100和LYP160试件在单调和12种循环加载制度下的材性试验,标定了低屈服点钢材的混合强化参数并进行验证,得到两种钢材的循环本构关系,为后续研究低屈服点钢板剪力墙整体结构的受力行为提供基础数据(第2章)。(2)采用通用有限元软件ABAQUS,建立低屈服点薄钢板剪力墙结构的非线性数值分析模型,采用上述低屈服点钢材循环本构模型,对国内外典型低屈服点薄钢板剪力墙试验进行了数值模拟,验证了数值分析手段的准确性和适用性(第3章)。(3)采用数值方法对低屈服点钢板剪力墙结构的抗侧性能影响因素进行参数化分析(包括宽高比、高厚比和边缘框架柱的柔度系数,共计360个模型),重点关注边缘框架对承载性能的贡献。从内嵌钢板拉力带发展程度及承载性能两个方面获取非加劲低屈服点钢板剪力墙结构边缘框架柱柔度系数限值,并分析了结构的承载效率,给出柱柔度系数最优建议值,为低屈服点钢板剪力墙结构的边缘框架柱设计提供重要依据(第4章)。(4)基于低屈服点钢板剪力墙结构抗侧性能影响因素的参数化分析结果,分析低屈服点钢板剪力墙结构的受力全过程,得出不同受力阶段内嵌钢板与边缘框架之间的刚度、剪力分配规律,确定内嵌钢板与边缘框架之间的剪力分配关系,进而量化边缘框架柱对承载力的贡献,为低屈服点钢板剪力墙内嵌钢板及边缘框架的优化设计提供必要条件(第5章)。
[Abstract]:The steel plate shear wall structure with low yield point is a kind of high ductility and high energy dissipation structure system, which can meet the development needs of high-rise and super high-rise buildings and realize the combination of high performance structure form and high performance material. The design concept of the combination of load-bearing components and energy-dissipation elements provides a good solution for the ductility seismic resistance of high-rise and super-high-rise building structures. But at present, there are few experimental and theoretical studies on steel plate shear wall structures with low yield point at home and abroad, so that a complete theoretical analysis system is not formed and corresponding design methods are lacking. In this paper, based on the material properties of low yield point steel, the mechanical behavior of non-stiffened low yield point steel plate shear wall structure is systematically studied by means of experimental study and numerical simulation, and the analysis of the effect of edge frame is carried out. The limit value of the column compliance coefficient and the shear ratio of the embedded steel plate are determined, and the design suggestions are given. The main work of this paper includes the following aspects: (1) the material properties of 35 low yield point steels LYP100 and LYP160 under monotonic and 12 cyclic loading systems have been tested and the mixed strengthening parameters of low yield point steels have been calibrated and verified. The cyclic constitutive relations of two kinds of steels are obtained. In order to provide basic data for further study on the behavior of steel plate shear wall with low yield point (chapter 2). (2), a nonlinear numerical analysis model of thin steel plate shear wall structure with low yield point is established by using the universal finite element software Abaqus. Using the cyclic constitutive model of low yield point steel, numerical simulation of typical low yield point thin steel plate shear wall tests at home and abroad has been carried out. The accuracy and applicability of the numerical analysis method (Chapter 3,). (3) are verified. The parameterized analysis (including the ratio of width to height) of the factors affecting the lateral behavior of steel plate shear wall structures with low yield point is carried out by numerical method. The ratio of height to thickness and the flexibility coefficient of frame columns with edges are 360 models in total, focusing on the contribution of edge frames to the bearing performance. In this paper, the limit value of column flexibility coefficient of frame with non-stiffened low yield point steel plate shear wall structure is obtained from two aspects of the development degree and bearing capacity of inlay steel plate tensile belt, and the bearing efficiency of the structure is analyzed, and the optimum suggested value of column compliance coefficient is given. This paper provides an important basis for the design of edge frame columns of steel plate shear wall structures with low yield point (Chapter 4). (4) based on the parameterized analysis results of the factors affecting the lateral behavior of steel plate shear wall structures with low yield points. Based on the analysis of the whole process of the shear wall structure with low yield point, the stiffness and shear force distribution between the inlaid steel plate and the edge frame in different stress stages are obtained, and the shear distribution relationship between the inlaid steel plate and the edge frame is determined. Furthermore, the contribution of the edge frame columns to the bearing capacity is quantified, which provides the necessary conditions for the optimization design of the steel plate embedded in the steel plate shear wall with low yield point and the edge frame (Chapter 5).
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU392.4

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