【作者】 董震；

【导师】 张其林；

【作者基本信息】 同济大学 ， 结构工程， 2007， 博士

【摘要】 作为一种新型建筑结构材料，铝合金具有重量轻、耐腐蚀、易于维护、施工方便等优点，能够适应现代工程结构向大跨和轻质方向发展以及承受恶劣条件的需要。国内对铝合金结构的研究已经开始，相关规范的制订也正在进行，这些工作将极大地促进铝合金结构在中国的推广应用。 本文依托国家建设部《铝合金结构设计规范》编制项目和山东省建设厅《钢结构建筑节能体系及铝镁锰合金墙板技术研究》科研项目，对易于发生局部屈曲的薄壁铝合金轴压构件、铝合金工字形组合板件及铝合金面板的稳定承载力进行研究。 本文对薄壁铝合金轴压构件、铝合金工字形组合板件进行理论分析，在国外试验研究的基础上确定正确的有限元分析模型，在参数分析的基础上提出一系列可供指导设计的实用计算公式。此外，本文系统地提出了铝合金面板的设计方法及计算公式，并依托试验研究验证了各项铝合金面板设计公式的准确性。以下是本文工作的主要研究成果： 1)将直接强度法应用于薄壁铝合金轴压构件的稳定承载力计算，解决目前有效截面理论求解薄壁铝合金构件的某些缺陷。 2)利用国外试验数据建立正确的有限元模型，对薄壁铝合金轴压构件进行非线性有限元分析，为后续的参数分析提供可靠的数值结果。 3)建议基于直接强度法的薄壁铝合金轴压构件承载力计算公式，并与有限元计算结果、国外试验数据及欧洲规范计算结果进行数值比对，验证公式的正确性。 4)对目前工字形组合板件抗剪承载力的各种计算方法进行分析，针对铝合金材料弹性模量低，易发生局部剪切屈曲的力学特性建议合适的计算方法。 5)利用国外试验数据建立正确的有限元模型，对铝合金工字形组合板件进行非线性有限元分析，并进行相应的参数分析。 6)给出考虑腹板剪切屈曲后强度和翼缘抗剪作用的铝合金工字形组合板件的抗剪承载力计算公式，并与国外相应试验结果、有限元计算结果及欧洲规范计算结果进行数值比对，验证公式的正确性。 7)对国内外常用的铝合金屋面、墙面系统及其特点进行了介绍。更多还原

【Abstract】 As a new-style structural material, aluminium alloy has the characteristic of lightweight, uncorruptness, convenient for maintenance and assembly, and fits need of development of modern engineering structures to long-span, lightweight and high-durability. The study for aluminium alloy structure already began in China, and the concerned design code is being established now. Those researches will boost the application of aluminium alloy structure in China.Supporting by projects of <Code for Design of Aluminium Structure> and <Research for Economical System of Steel Structure and Aluminum Alloy Sheeting>, the paper studies thin walled aluminium alloy members under axial force, aluminium alloy girders under shear, and the resistance of aluminium alloy plates.The paper presents the theory analysis for thin walled aluminium alloy members under axial force and aluminium alloy girders under shear. Based on experimental data, the finite element models were established and confirmed. Based on parameter analysis, a series of design formulas were proposed. Moreover, The paper presents the whole design method and design formulas for aluminium alloy plates. Based on experimental research, those design formulas were confirmed. The main productions of this paper can be found in the following list:1) The direct strength method is introduced for calculating the resistance of thin walled aluminium alloy members under axial force. It will solve the disadvantages of the effective section theory.2) Ansys software was adopted to do the non-linear analysis of thin walled aluminium alloy members under axial force. The calculation results of finite element model have been verified by comparison with experimental results. The accurate data was provided by the finte element analysis for the parameter analysis later.3) The design formulas based on direct strength method were proposed for calculating the resistance of thin walled aluminum alloy members under axial force, and were verified by comparison with experimental results, finite element results and更多还原