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为研究火灾后配筋陶粒混凝土结构的受力性能,对一组陶粒混凝土简支梁进行高温过火及火灾后的常温加载试验。与火灾前相同陶粒混凝土和普通混凝土构件进行对比,过火后试件的正截面受弯和斜截面受剪承载力均有不同程度的降低。同时,对陶粒混凝土试件的高温过火及过火后的加载试验进行有限元模拟,并将数值模拟结果与试验结果进行对比分析。
In order to study the mechanical properties of reinforced ceramsite concrete structures after fire, a series of ceramsite concrete simply supported beams were subjected to high temperature over-temperature and normal-temperature loading tests after fire. Compared with the same ceramsite concrete and common concrete members before fire, the specimens after bending have both positive and negative cross-section shear strength reduced to varying degrees. At the same time, the finite element simulation of ceramsite concrete specimen under high temperature and over-temperature load test is carried out, and the numerical simulation results are compared with the test results.