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为了系统研究SRC组合梁构件的弯曲性能,结合相关文献编制的有限元程序,编制了组合梁构件受弯性能的非线性有限元程序SRCBNP,对前期进行的系列试验构件进行了有限元的模拟,得到了相应试件的荷载位移曲线、破坏模式和SRCB-1试件混凝土裂缝开展与压溃过程,并与试验结果进行对比分析,结果表明:有限元计算与试验结论吻合较好,从而验证了程序的可靠性。同时还进一步分析了相关参数RC强度、截面组成对梁弯曲性能的影响规律,供相关规程规范的制订加以参考。
In order to systematically study the flexural behavior of SRC composite beam members, a nonlinear finite element program SRCBNP for flexural behavior of composite beam members was developed based on the finite element program of the related literatures. The finite element simulation of the previous series of experimental members was carried out. The load displacement curve, failure mode and crack initiation and collapse process of SRCB-1 specimens were obtained and compared with the test results. The results show that the finite element calculation is in good agreement with the experimental results, Program reliability. At the same time, the influence laws of RC strength and cross-section composition on the bending performance of the beam are further analyzed, and reference is made to the formulation of relevant codes and norms.