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采用三维非线性有限元方法对钢纤维混凝土工业地坪的工作状况进行了分析和研究。该模型将钢纤维混凝土工业地坪等效为弹性地基上的钢纤维混凝土板,采用改进后的Willam-Warnke五参数准则作为钢纤维混凝土的破坏准则,考虑了钢纤维混凝土的非线性特征以及因板内温度差产生温度应力等的影响,并将计算得到的荷载-挠度曲线、极限承载力及裂缝开展等与试验结果进行了对比,两者吻合良好,验证了建立的有限元模型的准确可靠。
The working condition of steel fiber concrete industrial floor is analyzed and researched by using the three-dimensional nonlinear finite element method. In this model, the steel fiber reinforced concrete industrial floor is equivalent to the steel fiber reinforced concrete slab on the elastic foundation. The improved Willam-Warnke five-parameter criterion is adopted as the failure criterion of steel fiber reinforced concrete. The nonlinear characteristics of steel fiber reinforced concrete Plate temperature difference and temperature stress, and the calculated load-deflection curve, ultimate bearing capacity and crack initiation are compared with the experimental results, the two agree well with each other, and verify the established finite element model is accurate and reliable .