土木工程学报  2020, Vol. 53 Issue (S2): 16-21    
  结构工程 本期目录 | 过刊浏览 | 高级检索 |
双阶屈服型摇摆钢框架抗震性能研究
王瀚钦1 冯玉龙1,2 蒋庆1,2 种迅1,2
1. 合肥工业大学土木与水利工程学院,安徽合肥 230009;2. 合肥工业大学土木工程结构与材料安徽省重点实验室,安徽合肥 230009
Seismic performance of a two-level yielding rocking steel frame
Wang Hanqin1 Feng Yulong1,2 Jiang Qing1,2 Chong Xun1,2
1. School of Civil Engineering, Hefei University of Technology, Hefei 230009, China;
2. Anhui Civil Engineering Structures and Materials Laboratory, Hefei University of Technology, Hefei 230009, China
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摘要 为提高含屈曲约束柱的摇摆钢框架(RSFB)结构在屈曲约束柱(BRC)屈服后的刚度和承载力,提出在RSFB结构底层BRC两侧各布置一根钢杆,形成双阶屈服型含屈曲约束柱的摇摆钢框架(TYRSFB)。钢杆底部通过铰支座与基础连接,上部通过限位装置与摇摆钢框架上短梁连接,并在限位装置与短梁之间设置一定间隙,以实现钢杆在结构中只受拉而不受压和整体结构的双阶屈服。对TYRSFB和RSFB结构进行拟静力试验和数值模拟,结果表明:虽然拟静力试验中结构性能因平面外约束失效未能充分发挥,但试验结构仍具有控制变形能力,摇摆钢框架基本保持弹性;所提出钢杆连接构造可以实现钢杆在结构中只受拉而不受压并实现TYRSFB结构的双阶屈服,钢杆进入工作前,TYRSFB结构性能与RSFB结构基本一致,钢杆进入工作后,结构的刚度和承载力明显高于RSFB结构;钢杆的加入不会影响BRC的性能发挥。
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王瀚钦 冯玉龙 蒋庆 种迅
关键词 屈曲约束柱 摇摆钢框架 双阶屈服 抗震性能 拟静力试验    
Abstract:A two-level yielding rocking steel frame with buckling-restrained columns (TYRSFB) was proposed to enhance the stiffness and carrying capacity of rocking steel frame (RSFB) after buckling-restrained column (BRC) yielding, which is constructed by adding a steel rod at each side of BRC in RSFB. To realize only tension in steel rod and structural two-level yielding, the pinned connection and a restrainer were used to connect the bottom of steel rod with foundation and the top of steel rod with the short beam in rocking steel frame, respectively, and a certain gap was set between the restrainer and short beam. The pseudo-static tests and simulations were conducted on the TYRSFB and RSFB, and results indicate that although the performance of test specimens cannot be fully used due to the failure of out-of-plane restraints in pseudo-static tests, the test specimens have excellent deformation controlling capacity, and rocking steel frames remain elastic. The proposed connection configuration of steel rod can realize only tension in steel rod and structural two-level yielding. Before the steel rod working, the performance of TYRSFB is basically same as the RSFB. After the steel rod joining, the stiffness and carrying capacity of TYRSFB are significantly higher than those of RSFB. Meanwhile, the addition of steel rods has little influence on the performance of BRCs.
Key wordsbuckling-restrained column    rocking steel frame    two-level yielding    seismic performance    pseudo-static test
    
引用本文:   
王瀚钦 冯玉龙 蒋庆 种迅. 双阶屈服型摇摆钢框架抗震性能研究[J]. 土木工程学报, 2020, 53(S2): 16-21.
Wang Hanqin Feng Yulong Jiang Qing Chong Xun. Seismic performance of a two-level yielding rocking steel frame. 土木工程学报, 2020, 53(S2): 16-21.
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