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本文对长期荷载作用下钢筋混凝土偏心受压柱的内力和变形进行了试验和理论研究。在试验的基础上,提出了混凝上非线性徐变模式。采用增量法和迭代法,通过计算机分析了受长期荷载作用下钢筋混凝土偏压柱的内力和变形的变化全过程。计算中考虑了材料的非线性、细长构件的二次弯矩作用以及变形和内力的重分布。试验和理论计算的结果符合较好。
In this paper, the internal forces and deformations of reinforced concrete eccentric compression columns subjected to long-term loading are experimentally and theoretically studied. Based on the experiments, a nonlinear creep model on the coagulation was proposed. Using the incremental method and iterative method, the whole process of the internal force and deformation of the reinforced concrete columns subjected to long-term loading was analyzed. The nonlinearity of the material, the secondary bending moment of the elongated member, and the redistribution of deformation and internal forces were taken into account in the calculation. The test and theoretical calculations are in good agreement.