预弯复合梁的力学性能

MECHANICAL PROPERTIES OF A PREFLEX COMPOSITE BEAM

通过结构模型试验和非线性有限元计算，研究预弯复合梁的变形、应力、裂缝特征及破坏形态；考虑了由混凝土徐变引起的一期混凝土预应力损失．计算结果与试验值符合良好．

In this paper, the deflection, stress, crack characteristics and failure state of apreflex composite beam are studied by means of model test and the nonlinear FEM analysis. In thenumerical computations considered are the prestress losses of the first phase concrete caused byconcrete creep. The computation results are in good agreement with the test values.