节点刚度对屈曲约束支撑混凝土框架结构抗震性能影响分析
毕业论文关键字：节点刚度；屈曲约束支撑；PKPM；SATWE 分析；抗震性能
The impact analysis of buckling restrained braces-concrete framework structures on seismic performances with considering joint stiffness Abstract: This paper focuses attention on the study that changes in seismic performance of buckling restrained braces-concrete frame structure when considering joint stiffness.First,it briefly introduced the procession of PKPM software to establish the finite element model and SATWE relevant parameter settings and analysis steps. Second, componentstiffness formula of stiffness is deduced by means of theoretical derivation, which is based on the concept of Diffusion Angle proposed by Whitemore in 1952 and equivalent trapezoidal approximation function area method adopted. Applying the formula to the following three practical engineering cases: LintongluStructure, Huahong Plant and Gangxiangyinwu Plant,itcomes to a conclusion that components axial stiffness little change, compared with the axial stiffness of buckling restrained braces itself. Thirdly, according to box-section dimensions of information before and after the project was considered in terms of joint stiffness ，establishing respectivelytwo PKPMmodels of the two engineering examples: Lintonglu Structure and Gangxiangyinwu Plant, setting up the corresponding SATWE parameters and analyzed. Finally，putting main calculation results of SATWE analysis together to form comparison tables. Observing changes in seismic performance of both actual buckling restrained braces - concrete framestructure, before and after considering jointstiffness, obtains corresponding conclusions.
Keywords: Joint Stiffness; Buckling-Restrained Brace; PKPM;SATWE Analysis;Seismic Performances
目录
1 绪论 .... 1
1.1 引言 .... 1
1.2 屈曲约束支撑-混凝土框架结构简介 . 2
1.3 屈曲约束支撑 .. 2
1.3.1 屈曲约束支撑的基本构成 .... 3
1.3.2 屈曲约束支撑与混凝土框架结构的连接形式 .... 4
1.3.3 屈曲约束支撑的工作机理 .... 5
1.4 国内外研究成果及本文研究内容 .. 7
1.4.1 国内外研究成果 . 7
1.4.2 本文研究内容 9
2. PKPM软件屈曲约束支撑框架设计过程 11
2.1 定义屈曲约束支撑 . 11
2.2 布置屈曲约束支撑 . 13
2.3 SATWE 分析 . 15
2.4 屈曲约束支撑构件的验算 ... 17
3. 承载力关系及节点刚度公式的推导 . 18
3.1 屈曲约束支撑的设计 .. 18
3.2 屈曲约束支撑的承载能力 ... 18
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