Experimental research on prefabricated steel-reinforced concrete column to steel beam composite joints

WU Chenglong; WANG Qihui; LI Shaohui; LIU Jiming

doi:10.11835/j.issn.2096-6717.2021.188

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Experimental research on prefabricated steel-reinforced concrete column to steel beam composite joints

Civil Engineering | 更新时间：2023-07-10

- Experimental research on prefabricated steel-reinforced concrete column to steel beam composite joints
- Journal of Civil and Environmental Engineering Vol. 45, Issue 4, Pages: 103-113(2023)
- 作者机构：
  
  青岛理工大学土木工程学院，山东青岛 266033
- 作者简介：
  
  brief: WU Chenglong (1989- ), PhD, main research interest: seismic performance of fabricated steel-concrete composite structure, E-mail: wuchenglongabc@163.com.
  LIU Jiming （corresponding author）, professor, doctorial supervisor, E-mail: liujm63@163.com.
- 基金信息：
  
  National Natural Science Foundation of China(51078195);Scientific Research Projects of Universities in Shandong(A2018-065)
- DOI：10.11835/j.issn.2096-6717.2021.188
  CLC： TU398.9
- Received：04 May 2021，
  
  Published：25 August 2023
- 稿件说明：
移动端阅览
WU Chenglong, WANG Qihui, LI Shaohui, et al. Experimental research on prefabricated steel-reinforced concrete column to steel beam composite joints[J]. Journal of Civil and Environmental Engineering, 2023, 45(4): 103-113.
DOI：

WU Chenglong, WANG Qihui, LI Shaohui, et al. Experimental research on prefabricated steel-reinforced concrete column to steel beam composite joints[J]. Journal of Civil and Environmental Engineering, 2023, 45(4): 103-113. DOI： 10.11835/j.issn.2096-6717.2021.188.

摘要

针对装配式混凝土结构中梁柱节点连接构造复杂、施工效率低等问题，设计开发了一种预制钢骨混凝土柱—钢梁组合节点，通过拟静力试验，研究不同梁端连接方式对新型节点抗震性能的影响。结果表明：不同梁端连接方式的节点试件均为梁端受弯破坏，破坏位置在翼缘连接板处，实现了节点域附近塑性铰外移的效果；翼缘连接板和混凝土的应变受梁端连接方式的影响较大，钢梁腹板、H型钢骨和纵向钢筋的应变受到的影响相对较小；栓焊混合节点和螺栓节点属于半刚性连接，焊接节点属于刚性连接；各试件的滞回性能良好，承载力和刚度退化性能稳定，延性系数在4.03~11.84之间，等效黏滞阻尼系数在0.24~0.36之间。该类型节点具有良好的承载能力和抗震性能，能满足现有抗震设计要求。

Abstract

Aiming at the problems of complicated beam-column connection structure and low construction efficiency in prefabricated concrete structures. Designed and developed a new type of prefabricated steel-reinforced concrete column to steel beam composite joint

and the influence of different beam end connection methods on the seismic performance of the new joint was studied by the pseudo-static test. The results show that the specimens with different beam end connections are all flexural failure

and the failure location is at the flange connecting plate

which realizes the effect of the plastic hinge moving out near the joint region. The strain of the flange connection plate and concrete is greatly affected by beam end connection mode

while the effect to strain of the steel beam web

H-shaped steel skeleton

and longitudinal reinforcement are relatively small. The bolt-weld hybrid joint and bolt joint belong to semi-rigid connections

while the weld joint belongs to rigid connections. The hysteretic behavior of each specimen is good

and the degradation performance of bearing capacity and stiffness is stable. The ductility coefficient is 4.03-11.84

and the equivalent viscous damping coefficient is 0.24-0.36. This type of joint has good bearing capacity and seismic performance

which can meet the existing seismic design requirements.

关键词

Keywords

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