PVA纤维混凝土弯曲梁的加载断裂损伤测试分析  

Testing and Analysis of Load Fracture Damage of PVA Fiber Reinforced Concrete Bending Beams

作　　者：吕健 赵新波[1] 何晓红 王利民[1] Lyu Jian;Zhao Xinbo;He Xiaohong;Wang Limin(College of Science,Qingdao University of Technology,Qingdao,China)

机构地区：[1]青岛理工大学理学院,山东青岛

出　　处：《科学技术创新》2024年第17期165-168,共4页Scientific and Technological Innovation

摘　　要：采用不同切口深度的PVA纤维混凝土梁进行四点弯曲实验,结合双K断裂准则,计算不同开口深度梁起裂强度因子和失稳强度因子,通过准脆性计算公式计算得到PVA纤维混凝断裂过程区裂缝开口位移和黏聚应力。Four point bending experiments were conducted on PVA fiber reinforced concrete beams with different incision depths.Combined with the double K fracture criterion,the initiation strength factor and instability strength factor of beams with different opening depths were calculated.The crack opening displacement and cohesive stress in the fracture process zone of PVA fiber reinforced concrete were calculated using the quasi brittle calculation formula.

关 键 词：PVA纤维混凝土 四点弯曲梁试验 双K断裂准则 断裂过程 

分 类 号：TU528.572[建筑科学—建筑技术科学]