Analysis of Hysteretic Behavior of a New Type of Rocking Column with Buckling⁃restrained Longitudinal Reinforcements

Gang LI; Chongyang ZHOU; Ronghua LI

doi:10.13409/j.cnki.jdpme.201904014

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Analysis of Hysteretic Behavior of a New Type of Rocking Column with Buckling⁃restrained Longitudinal Reinforcements

更新时间：2025-09-25

- Analysis of Hysteretic Behavior of a New Type of Rocking Column with Buckling⁃restrained Longitudinal Reinforcements
- Journal of Disaster Prevention and Mitigation Engineering Vol. 41, Issue 3, Pages: 531-539(2021)
- 作者机构：
  
  大连理工大学建设工程学部，辽宁大连 116024
- 作者简介：
- 基金信息：
- DOI：10.13409/j.cnki.jdpme.201904014
  CLC： TU375.1
- Received：08 April 2019，
  
  Revised：2019-05-17，
  
  Published：16 June 2021
- 稿件说明：
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李钢,周重阳,李荣华.约束屈曲纵筋摇摆柱滞回性能研究[J].防灾减灾工程学报,2021,41(03):531-539.

LI Gang,ZHOU Chongyang,LI Ronghua.Analysis of Hysteretic Behavior of a New Type of Rocking Column with Buckling⁃restrained Longitudinal Reinforcements[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(03):531-539.
李钢,周重阳,李荣华.约束屈曲纵筋摇摆柱滞回性能研究[J].防灾减灾工程学报,2021,41(03):531-539. DOI： 10.13409/j.cnki.jdpme.201904014.

LI Gang,ZHOU Chongyang,LI Ronghua.Analysis of Hysteretic Behavior of a New Type of Rocking Column with Buckling⁃restrained Longitudinal Reinforcements[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(03):531-539. DOI： 10.13409/j.cnki.jdpme.201904014.

摘要

提出了一种新型约束屈曲纵筋摇摆柱构造，即在传统钢筋混凝土柱中采用约束屈曲纵筋代替普通钢筋并放松柱与基础的约束而形成的一种新型摇摆柱，并提出了相应的恢复力模型。对约束屈曲纵筋进行了单调受压试验和数值模拟，验证了约束屈曲装置对纵筋的约束功能并研究了钢筋直径、约束屈曲装置与钢筋间空隙对其约束功能的影响；对约束屈曲纵筋摇摆柱进行了数值模拟，研究纵筋直径以及轴压比对其滞回性能的影响。结果表明：约束屈曲纵筋摇摆柱的滞回曲线为典型旗帜型，其强度为混凝土部分强度和纵筋部分强度叠加，柱的摇摆发生在受拉侧纵筋屈服之后。通过设计可使结构在小震阶段不摇摆，中震阶段柱纵筋屈服结构发生摇摆。轴压比以及纵筋直径的增加都可以在不同程度增加约束屈曲纵筋摇摆柱的侧向承载能力。

Abstract

In this paper， a new type of rocking column with buckling-restrained longitudinal reinforcements is proposed. It is a new kind of rocking column formed by using the buckling-restrained longitudinal reinforcements， instead of ordinary steel bars in traditional reinforced concrete columns， and by relaxing the constraint of the column and the foundation. The corresponding resilience model is proposed and verified through analyses. The monotonic compression tests and numerical simulation of the buckling-restrained device were carried on. The restraining function of the buckling-restrained device was verified and the effects of the reinforcement diameter and the space between the buckling-restrained device and the reinforcement on its restraint function were studied. The numerical simulation of the column was carried out， and the effects of the reinforcement diameter and the axial compression ratio on the hysteretic behavior were investigated. The results show that the hysteresis curve of the rocking column with buckling-restrained longitudinal reinforcements is a typical flag type， and its strength is the superposition of the strength of the rocking column and the longitudinal reinforcements. The rock of the column occurs after the longitudinal reinforcement yields. A rational design can make the structure not rock in the small earthquake stage， and rock in the moderate earthquake stage when the longitudinal reinforcement yielding occurs. Also， the increase of the axial compression ratio and the reinforcement diameter can increase the lateral bearing capacity of the rocking column with buckling-restrained longitudinal reinforcement.

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references

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