600MPa级钢筋混凝土结构的研究综述  

SUMMARY OF RESEARCH ON 600MPA GRADE REINFORCED CONCRETE STRUCTURE

作　　者：任江昊 祝英杰[1] REN Jianghao;ZHU Yingjie(School of Civil Engineering, Qingdao University of Technology, Shandong Qingdao 266033, China)

机构地区：[1]青岛理工大学土木工程学院

出　　处：《低温建筑技术》2019年第8期74-77,共4页Low Temperature Architecture Technology

摘　　要：对近年的研究成果分析后发现,600MPa级钢筋配置于混凝土梁可以显著提高梁的受弯承载力,且梁的破坏特征较好;而在预应力梁中作为非预应力筋既能有效提高预应力筋的极限应力增量,减缓梁的刚度退化,又能充分发挥600MPa级钢筋的强度优势,提高构件的承载力;当配置于混凝土柱中作为箍筋时,能够显著提高柱的承载能力,且能提高混凝土柱的延性、滞回性能及耗能能力;相对于普通钢筋,配置600MPa级钢筋可以显著改善梁柱节点的破坏形态,提高承载力,延性及耗能能力;而600MPa级钢筋的粘结锚固的破坏特征及粘结应力分布与普通钢筋相近且锚固性能良好。After analyzing the research results in recent years, it is found that the 600MPa grade steel bar is placed on the concrete beam to significantly improve the flexural capacity of the beam, and the damage characteristics of the beam are better. In the prestressed beam, it is used as the non-prestressed tendon. It can effectively increase the limit stress increment of the prestressed tendon, slow down the stiffness degradation of the beam, and fully exert the strength advantage of the 600MPa grade steel bar to improve the bearing capacity of the component;when configured as a stirrup in the concrete column, the column can be significantly improved. The bearing capacity can improve the ductility, hysteresis performance and energy dissipation capacity of the concrete column;compared with the ordinary steel bar, the 600MPa grade steel bar can significantly improve the failure mode of the beam-column joint and improve the bearing capacity, ductility and energy consumption capacity;The failure characteristics and bond stress distribution of the bonded anchorage of 600MPa grade steel bars are similar to those of ordinary steel bars and the anchoring performance is good.

关 键 词：600MPa级钢筋 混凝土结构 力学性能 研究综述 

分 类 号：TU511.32[建筑科学—建筑技术科学]