装配式组合结构柱高强钢管连接节点界面黏结性能试验

朱张峰; RICHARD Liew; 杜咏; 姚兵

doi:10.13204/j.gyjzG21100816

装配式组合结构柱高强钢管连接节点界面黏结性能试验

doi: 10.13204/j.gyjzG21100816

1. 南京工业大学土木工程学院, 南京 211816;
2. 新加坡国立大学土木与环境工程系, 新加坡 119077

基金项目:

国家自然科学基金面上项目(51678294)

江苏省"六大人才高峰"项目(JZ-024)。

国家重点研发计划项目(2016YFC0701703)

详细信息

作者简介:
朱张峰,男,1985年出生,博士,副教授。电子信箱:zzfking2210@163.com

计量
- 文章访问数: 51
- HTML全文浏览量: 7
- PDF下载量: 8
- 被引次数: 0
出版历程
- 收稿日期: 2021-10-08
- 网络出版日期: 2023-07-01

Interfacial Bond Performance Experiment on High-Strength Steel Pipe Joints for Prefabricated Composite Structural Columns

1. College of Civil Engineering, Nanjing Tech University, Nanjing 211816, China;
2. Department of Civil and Environmental Engineering, National University of Singapore, Singapore 119077, Singapore

摘要

摘要: 为确定装配式组合结构柱高强钢管连接节点常用的ϕ114×25、ϕ152×16和ϕ194×10截面规格Q420连接钢管的黏结长度及构造,开展了在不同黏结长度(600 mm、800 mm)、不同黏结材料(C35混凝土、M50灌浆料)及钢管外壁增设ϕ6@50螺旋筋条件下的钢管推出试验。通过对比分析荷载-位移/滑移曲线及黏结强度,探讨钢管连接节点的界面黏结性能。试验及分析结果表明,600 mm黏结长度即可保证节点具备满足相关规范要求的黏结强度,黏结长度增大可延缓滑移,但黏结强度随之降低;高强度灌浆料明显提高峰值点荷载大小,对曲线走势无明显影响;长细比与径厚比影响规律不明显;条件相同的情况下ϕ114×25截面钢管可获得较高的黏结强度;螺旋筋可有效提高黏结强度,延缓界面滑移,且施工简便,建议采用。
- 装配式组合结构 /
- 柱节点 /
- 高强钢管 /
- 黏结强度 /
- 灌浆料 /
- 螺旋筋
Abstract: To determine the bond length and configuration of high-strength Q420 steel pipe joint for prefabricated composite structural columns, including the pipe sections of ϕ114×25, ϕ152×16 and ϕ194×10, push-out tests were conducted. The different bond lengths (600 mm and 800 mm), different bond materials (C35 concrete and M50 grout) and the setting of spiral rebars ϕ6@50 were considered. By comparing and analyzing the load displacement/slippage curves as well as bond strengths, the interfacial bond performance of steel pipe joints was discussed. The test and analysis results showed that 600 mm bond length could ensure that the joint had bond strength that could meet the requirements of the specification. The increase of bond length could delay the slip, but the bond strength decreased. The high-strength grout obviously increased the peak load, and had no obvious effect on the trend of the curve. The influence of slenderness ratio and diameter thickness ratio were not obvious. Under the same conditions, ϕ114×25 steel pipe could obtain the highest bond strength. Spiral rebars could effectively improve the bond strength and delay the interface slip,which should be recommended in engineering, due to its good behavior and easy construction.
- prefabricated composite structure /
- column joint /
- high-strength steel pipe /
- bond strength /
- grout /
- spiral rebar

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参考文献(12)

[1]	王秋维, 王程伟, 刘乐, 等. 钢管混凝土界面黏结性能研究现状与分析进展[J]. 建筑结构, 2021, 51(12):91-97.
[2]	QU X S, CHEN Z H, NETHERCOT D A, et al. Load reversed push-out tests on rectangular CFST columns[J]. Journal of Constructional Steel Research, 2013, 81:35-43.
[3]	ALY T, ELCHALAKANI M, THAYALAN P, et al. Incremental collapse threshold for pushout resistance of circular concrete filled steel tubular columns[J]. Journal of Constructional Steel Research, 2010, 66(1):11-18.
[4]	TAO Z, SONG T Y, UY B, et al. Bond behavior in concrete-filled steel tubes[J]. Journal of Constructional Steel Research, 2016, 120:81-93.
[5]	刘永健, 刘君平, 池建军. 钢管混凝土界面抗剪黏结滑移力学性能试验[J]. 广西大学学报(自然科学版), 2010, 35(1):17-23, 29.
[6]	CEN.Design of composite steel and concrete structures-part1-1:general rules and rules for buildings:Eurocode 4(EC4)[S]. Brussels:Commission of European Communities, 2004.
[7]	BSI.Steel concrete and composite bridges-part 5:code of practice for the design of composite bridges:BS 5400-5[S]. Britain:British Standard Institute, 2005.
[8]	Committee BD-090. Bridge design part 6:steel and composite construction:AS 5100. 6-2004[S]. Sydney:Standards Australia, 2004.
[9]	AISC.Specification for structural steel buildings:ANSI/AISC 360-16[S]. Chicago:American Institute of Steel Construction, 2016.
[10]	王秋维, 刘乐, 史庆轩, 等. 钢管活性粉末混凝土界面黏结强度计算方法研究[J]. 工程力学, 2020, 37(4):41-50.
[11]	周鹏华, 徐礼华, 谷雨珊, 等. 钢管与其核心自应力自密实高强混凝土的黏结性能[J]. 武汉大学学报(工学版), 2018, 51(9):782-789.
[12]	LYU W Q, HAN L H. Investigation on bond strength between recycled aggregate concrete (RAC) and steel tube in RAC-filled steel tubes[J]. Journal of Constructional Steel Research, 2019,155:438-459.