有粘结预应力FRP筋混凝土梁受弯有限元模拟

Nonlinear finite element method of flexural performance for concrete beam with inherently bonding prestressed fibre reinforced polymer(FRP) bar

采用有限元软件ABAQUS对预应力FRP筋混凝土梁受弯性能进行模拟。通过降温法施加预应力,忽略预应力筋与混凝土之间的粘结滑移。在收敛度差调整到3%、线性受拉损伤值dt的峰值取为0.9时,模拟结果与他人的试验结果比较基本吻合。

Flexural performance of concrete beam with inherently bonding prestressed fibre reinforced polymer（FRP） bars was simulated by ABAQUS.Concrete tension damage and convergence control were considered in the finite element model.The pre-stress was applied by decreasing temperature.Bond between FRP bar and concrete was simulated by embedding.When convergence control value is 0.03 and the maximum value of concrete linear tension damage is 0.9,the simu-lated result agrees with previous experimental results.