Experimental Research on Hysteretic Behavior of High-Strength Steel CHS T-Joints Under Axial Loads

YUAN Zhishen; YIN Siguang; YAO Yao; TANG Xiang; YUAN Jian; LUO Xuewen

doi:10.3724/j.gyjzG23111510

Volume 54 Issue 5

May 2024

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YUAN Zhishen, YIN Siguang, YAO Yao, TANG Xiang, YUAN Jian, LUO Xuewen. Experimental Research on Hysteretic Behavior of High-Strength Steel CHS T-Joints Under Axial Loads[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(5): 170-178. doi: 10.3724/j.gyjzG23111510

Citation:

YUAN Zhishen, YIN Siguang, YAO Yao, TANG Xiang, YUAN Jian, LUO Xuewen. Experimental Research on Hysteretic Behavior of High-Strength Steel CHS T-Joints Under Axial Loads[J]. INDUSTRIAL CONSTRUCTION, 2024, 54(5): 170-178. doi: 10.3724/j.gyjzG23111510

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Experimental Research on Hysteretic Behavior of High-Strength Steel CHS T-Joints Under Axial Loads

doi: 10.3724/j.gyjzG23111510

1. College of Civil Engineering, Central South University of Forestry and Technology, Changsha 410004, China;
2. Hunan Key Laboratory of Engineering Rheology, Central South University of Forestry and Technology, Changsha 410004, China;
3. College of Urban Construction, Zhejiang Shuren University, Hangzhou 310015, China

Received Date: 2023-11-15
Available Online: 2024-06-22

Abstract

Abstract

In order to study the hysteretic behavior of high strength steel circular hollow section (CHS) T-joints under axial loads, five high-strength steel CHS T-joints under brace axial reciprocating loads with different outer diameter ratios of brace to chord were investigated experimentally and numerically. The hysteretic curves, skeleton curves, energy consumption, ductility and failure modes were analyzed, focusing on the effects of geometric parameters. The results showed that the failure mode of the joints under brace axial reciprocating loads was that the chord wall cracked near the crown area at the intersection line of braces and chords before the cracks expanded along the main pipe cross section, which was different from that of joints made of ordinary strength steel. The hysteretic curve of each joint was full shuttle shape which reflected good seismic performance for the high-strength steel CHS T-joints. The research also showed that the specimens with the same chord section expressed similar shape of the hysteretic curve, and the chord section was one of the main factors affecting the hysteretic behavior of this type of joints. The failure modes, hysteretic curves and skeleton curves of the joints calculated by finite element analysis were in good agreement with the test results, the finite element models established in the paper could well simulate the axial hysteretic behavior of high-strength steel CHS T-joints.
- high-strength steel tube,
- CHS T-joint,
- axial hysteresis performance,
- failure mode,
- seismic performance

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References(26)

References

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