配置500 MPa 纵筋钢筋混凝土框架顶层端节点抗震性能试验研究
Seismic behavior of knee joints of R.C frame with 500 MPa reinforcement
朱爱萍 1肖从真 1黄小坤1
作者信息
- 1. 中国建筑科学研究院，建研科技股份有限公司，北京 100013
- 折叠
摘要
按照《混凝土结构设计规范》（GB 50010—2010）设计了6个配置500 MPa 纵筋的钢筋混凝土框架顶层端节点，并进行了低周反复加载抗震性能试验，验证了规范规定的抗震措施对配置500 MPa 钢筋的顶层端节点的有效性，分析了配置500 MPa 级钢筋的顶层端节点的受力特点、节点区的破坏形态以及节点的综合抗震性能，并与受力条件基本相同的配置 HRB335级纵筋节点的受力性能进行了对比，对采用不同延性指标评价配置不同强度钢筋节点的延性性能差异进行了讨论。
Abstract
Based on Code for design of concrete structures (GB 50010—2010),six knee joints with HRB500 rebars on top story of reinforced concrete frame structure were designed and tests on their seismic behavior were conducted under reversed cyclic loading.The effectiveness of code provisions on seismic detailing of such knee joints of reinforced concrete frame was revealed. Mechanic properties,failure modes and comprehensive seismic performance of these top story knee joints reinforced with 500 MPa rebars was analyzed.Furthermore,these joints were compared with those similar joints reinforced with 335 MPa rebars.Different ductility index were used to discuss difference of ductility of joints reinforced with different strength rebars to provide reliable evidence for the application of 500 MPa rebars in the joints.
关键词
钢筋混凝土框架/顶层端节点/500/MPa/钢筋/抗震性能Key words
reinforced concrete frame/knee joint/500 MPa reinforcement/seismic performance引用本文复制引用
出版年
2015
NETL
NSTL
万方数据