Eight structural fire tests on an aluminum alloy shell specimen are conducted in this paper. Firstly, the test program is described in detail. Then, test results, including the test phenomenon, the temperature-time curves, and the displacement-time curves, are exhibited. In the structural fire tests, the specimen under ventilation-controlled fires had greater thermal and structural responses. The maximum measured air temperature was 128 ℃, and the maximum temperature of the members and the gusset plates were 85 ℃ and 80 ℃, respectively. The specimen performed arching during the test process, and the maximum displacement was smaller than the restriction value for the serviceability limit state in existing design codes. After all the tests, no damage that would influence the structural behavior was observed. Subsequently, based on the test results, two approaches, namely the empirical formula and the field simulation, are proved to be useful to predict the non-uniform temperature distribution. Finally, the global deformation patterns, the distribution of internal forces, and the variation of the ultimate bearing capacity of the shell specimen, are analyzed through numerical analysis. The results indicated that the fire located at the corner is more disadvantageous to the specimen.

本文对铝合金外壳试样进行了八次结构防火测试。首先，详细描述测试程序。然后，显示测试结果，包括测试现象，温度-时间曲线和位移-时间曲线。在结构火灾测试中，通风控制的火灾下的样品具有更大的热响应和结构响应。测得的最高空气温度为128℃，构件和角撑板的最高温度分别为85℃和80℃。试样在测试过程中进行了拱形，最大位移小于现有设计规范中适用极限状态的极限值。在所有测试之后，未观察到会影响结构性能的损坏。随后，根据测试结果，两种方法，即经验公式和现场模拟，被证明对预测温度不均匀分布是有用的。最后，通过数值分析，分析了壳试样的整体变形模式，内力分布以及极限承载力的变化。结果表明，位于拐角处的火对标本更为不利。