锈蚀箍筋约束混凝土压弯构件恢复力模型优化  

Optimization of the restoring force model of corroded stirrups constrained concrete compression-bending components

作　　者：谢冰莹 李强[2] XIE Bingying;LI Qiang(Ankang Vocational and Technical College,Ankang 725000,Shaanxi China;Xi’an University of Science and Technology,Xi’an 710000,China)

机构地区：[1]安康职业技术学院,陕西安康725000 [2]西安科技大学,陕西西安710000

出　　处：《粘接》2024年第7期156-160,共5页Adhesion

基　　金：国家自然科学基金(项目编号:51408483)。

摘　　要：箍筋锈蚀后受其约束的钢筋混凝土构件承载能力、强度、刚度都降低,塑性、延性变差,影响了构件的抗震性能。研究基于恢复力模型,考虑到箍筋锈蚀后约束混凝土应力-应变关系的改变,建立锈蚀箍筋约束混凝土压弯构件的退化三线型恢复力模型,并进行有限元分析。结果表明,按照构建的恢复力模型计算得到的骨架曲线、滞回曲线与试验结果较为接近,由此得出该模型有效。After stirrup corrosion,the bearing capacity,strength and stiffness of the reinforced concrete components constrained by stirrups are reduced,and the plasticity and ductility become worse,which affects the seismic performance of the components.Based on the restoring force model,considering the change of the stress⁃strain relationship of the constrained concrete after stirrup corrosion,a degraded trilinear restoring force model of the corroded stirrup constrained concrete compression and bending member was established,and the finite element analysis was carried out.The results showed that the skeleton curve and hysteresis curve calculated according to the constructed resilience model were close to the experimental results,so it was concluded that the model was effective.

关 键 词：锈蚀箍筋 压弯构件 低周往复 恢复力模型 

分 类 号：TQ178[化学工程—硅酸盐工业]