钢纤维混凝土深梁试验研究与非线性有限元分析

采用试验研究与非线性有限元模拟计算相结合的方法,研究钢纤维混凝土深梁的受力性能,包括在静力荷载作用下的开裂荷载及极限承载力等,将有限元分析结果与试验结果进行对比分析,结果表明,钢纤维的掺入,能提高混凝土深梁的开裂荷载及极限承载力,并且能有效地抑制结构裂缝的开展;只要合理选用单元类型、参数模型及收敛准则,混凝土结构非线性有限元分析可以取得令人满意的结果。

Experimental Study and Finite Element Analysis of Steel Fiber Concrete Deep Beams

The stress behavior of the steel fiber concrete deep beams were discussed,included the craze load and ultimate bearing capacity under the static load function through the method of the experimental study and the non-linear finite element analysis.Compared the data of the experiment with those of the finite element analysis,the results indicate that the craze load and ultimate bearing capacity of the concrete deep beam can be enhanced and the cracks further spread can be effectively suppressed if the steel fiber are mixed into the beam.Meanwhile,good agreement will be found between test results and simulation results if the unit type,the parameter model and the failure criterion were selected reasonably.