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本文对40个粉煤灰陶粒混凝土T形截面柱体,在常温100℃～900℃范围内的不同温度和荷载同时作用下的强度、变形、弹性模量和应力—应变关系等进行了实验和理论研究工作.探讨了试件在高温和荷载共同作用下的变化规律,着重分析了不同温度和荷载共同作用下的破坏特征、强度、极限压应变、弹性模量和应力—应变关系等方面的影响,采用了合理的模式,经过理论分析和推导,建立了简洁实用的公式,并用计算机分析,表明理论计算与实验结果符合较好.
In this paper, experiments were carried out on the strength, deformation, elastic modulus and stress-strain relationship of 40 fly ash ceramsite concrete T-section columns under different temperatures and loads at temperatures ranging from 100°C to 900°C. With theoretical research work, the changing rules of the specimens under the joint action of high temperature and load are discussed, and the failure characteristics, strength, ultimate compressive strain, elastic modulus, and stress-strain relationship under different temperatures and loads are emphatically analyzed. The impact of the use of a reasonable model, after theoretical analysis and derivation, the establishment of a simple and practical formula, and computer analysis shows that the theoretical calculation and experimental results are in good agreement.