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本文通过模型的静载试验,并用钢筋混凝土非线性有限元法编制Fortran语言程序进行计算分析,讨论了微弯板条在不同开裂深度下,开裂对极限承载力的影响;板条开裂深度、裂缝分布与外荷载的关系;在相同配筋下,不同开裂深度对结构刚度的影响;板条开裂后薄膜力的变化;在相同荷载、相同开裂状态下,不同含筋率对控制初裂和对极限承载力的影响;水平位移对极限承载力的影响等问题。主要目的是探讨微弯板条开裂以后的受力性能。
In this paper, the static load test of the model and the non-linear finite element method of reinforced concrete were used to calculate and analyze the Fortran language program. The influence of cracking on the ultimate bearing capacity of the micro-bent slats at different cracking depths was discussed. The cracking depth, Distribution and external load; under the same reinforcement, the effect of different cracking depth on the structural stiffness; the change of the film force after lath cracking; under the same load and the same cracking condition, The influence of ultimate bearing capacity and the influence of horizontal displacement on ultimate bearing capacity. The main purpose is to investigate the mechanical behavior of micro-bent slats after cracking.