7A04-T6 铝合金矩管柱抗震性能研究

Study on Seismic Performance of 7A04-T6 Aluminum Alloy Rectangular Pipe Column

摘要:

为研究7A04-T6铝合金矩管柱的抗震性能，在验证有限元模型可行性的基础上，对12根7A04-T6铝合金矩管在低周反复荷载下的加载过程进行模拟。根据模型计算结果分析长细比、轴压比及截面形式对7A04-T6铝合金矩管抗震性能影响，得出随着长细比、轴压比的增大，构件抗震性能变差，与加载方向对应的矩管柱腹板尺寸对其抗震性能起着主导作用。同时提出了可用于预测7A04-T6铝合金矩管抗震性能的骨架曲线模型，并验证了模型的准确性。

Abstract:

In order to study the seismic performance of 7A04-T6 aluminum alloy rectangular pipe column, the loading process of 12 7A04-T6 aluminum alloy moment pipes under the low cyclic loading is simulated on the basis of verifying the feasibility of the finite element model. According to the model results, the influence of slenderness ratio, axial compression ratio and section form on the seismic performance of 7A04-T6 aluminum alloy rectangular pipe column is analyzed. It is concluded that with the increase of slenderness ratio and axial compression ratio, the seismic performance of the component becomes worse, and the web size of the rectangular pipe column corresponding to the loading direction plays a leading role in its seismic performance. At the same time, the skeleton curve model which can be used to predict the seismic performance of 7A04-T6 aluminum alloy rectangular pipe column is proposed, and the accuracy of the model is verified.