铝合金构件T形连接承载性能

Load bearing Capacity of Aluminum Alloy T stub Joints

摘要:

基于Kulak计算模型，验证并比较了中国和欧洲铝合金结构规范的相关设计公式.完成了9组共25个国产铝合金构件T形连接的试验，对试验结果和按规范公式的计算结果进行了比较.进行了大规模的T形连接数值计算，考察连接几何参数对其破坏模式和极限承载力的影响，并分析了T形连接几何参数对其翼缘有效长度的影响.根据试验和数值模拟结果，进一步完善了T形连接的计算模型和基本假定，并基于欧洲铝合金结构规范公式提出了修正公式.

Abstract:

On the basis of Kulak prying model, the formulas for calculating ultimate load bearing capacity of T stub joints in Chinese code and European code are verified and compared. Tests of 25 T stub joints consisting of 9 groups are conducted. Furthermore, large scale of numerical parametric analysis is performed to investigate the influence of several geometrical parameters on the behavior of aluminum alloy T stub joints including failure modes, ultimate load bearing capacity and effective length of flanges. Based on the test results and numerical results, the model and assumptions of T stub joints are modified. Finally, the correction formulas based on EC9 are obtained.