玻璃纤维格栅加固RC梁受弯破坏数值模拟  

Numerical Simulation of Flexural Failure of RC Beams Strengthened with Fiberglass Gratings

作　　者：张耀文 王伟峰 郭星辰 Zhang Yaowen;Wang Weifeng;Guo Xingchen(Xinjiang University,Urumqi 830047,China)

机构地区：[1]新疆大学建筑工程学院,新疆乌鲁木齐830047 [2]新疆大学,新疆乌鲁木齐830047

出　　处：《廊坊师范学院学报（自然科学版）》2020年第1期96-99,共4页Journal of Langfang Normal University(Natural Science Edition)

摘　　要：基于ABAQUS有限元分析软件对GFRP(玻璃纤维格栅)加固RC(钢筋混凝土)梁进行受弯试验模拟,通过与未加固RC梁对比,重点探究其破坏模式及力学性能的变化规律。模型试验结果表明,GFRP加固梁受拉区混凝土裂缝密且宽度较小,受压区混凝土被压碎时间滞后,由于GFRP材料的加入使得梁内拉应力得到提高,整体耗能增加,加固后梁的承载力及延性都得到一定提升,极限位移相比于未加固前提高70.19%。Based on ABAQUS finite element analysis software, the bending test of RC(reinforced concrete beams strengthened with GFRP(glass fiber grating) was simulated and compared with unreinforced RC beams. The failure mode and the change law of mechanical properties were studied. The results of the model test show that the concrete cracks in the tensile zone of GFRP strengthened beams are dense and the width is small, and the concrete in the compression zone is crushed slowly. Later, due to the addition of GFRP material, the tensile stress in the beam is increased, the overall energy consumption is increased, the bearing capacity and ductility of the strengthened beam are improved, and the ultimate displacement is 70.19% higher than that of the unreinforced beam.

关 键 词：有限元分析 加固 RC梁 破坏模式 力学性能 

分 类 号：TU375.1[建筑科学—结构工程]