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

ZHU Zhangfeng; RICHARD Liew; DU Yong; YAO Bing

doi:10.13204/j.gyjzG21100816

Volume 53 Issue 4

Apr. 2023

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ZHU Zhangfeng, RICHARD Liew, DU Yong, YAO Bing. Interfacial Bond Performance Experiment on High-Strength Steel Pipe Joints for Prefabricated Composite Structural Columns[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(4): 120-124,179. doi: 10.13204/j.gyjzG21100816

Citation:

ZHU Zhangfeng, RICHARD Liew, DU Yong, YAO Bing. Interfacial Bond Performance Experiment on High-Strength Steel Pipe Joints for Prefabricated Composite Structural Columns[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(4): 120-124,179. doi: 10.13204/j.gyjzG21100816

Citation:

ZHU Zhangfeng, RICHARD Liew, DU Yong, YAO Bing. Interfacial Bond Performance Experiment on High-Strength Steel Pipe Joints for Prefabricated Composite Structural Columns[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(4): 120-124,179. doi: 10.13204/j.gyjzG21100816

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

doi: 10.13204/j.gyjzG21100816

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

Received Date: 2021-10-08
Available Online: 2023-07-01

Abstract

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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References(12)

References

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