NUMERICAL ANALYSIS ON SEISMIC PERFORMANCE OF RESILIENT STEEL BEAM-COLUMN JOINTS USING SUSPENDED CONNECTIONS

ZHAO Junxian; CAI Zexin; SHAO Xudong; ZHANG Jingcheng; HAO Guiqiang; SHI Xiaona

doi:10.13204/j.gyjzG20012301

Volume 51 Issue 8

Nov. 2021

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ZHAO Junxian, CAI Zexin, SHAO Xudong, ZHANG Jingcheng, HAO Guiqiang, SHI Xiaona. NUMERICAL ANALYSIS ON SEISMIC PERFORMANCE OF RESILIENT STEEL BEAM-COLUMN JOINTS USING SUSPENDED CONNECTIONS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(8): 79-86. doi: 10.13204/j.gyjzG20012301

Citation:

ZHAO Junxian, CAI Zexin, SHAO Xudong, ZHANG Jingcheng, HAO Guiqiang, SHI Xiaona. NUMERICAL ANALYSIS ON SEISMIC PERFORMANCE OF RESILIENT STEEL BEAM-COLUMN JOINTS USING SUSPENDED CONNECTIONS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(8): 79-86. doi: 10.13204/j.gyjzG20012301

Citation:

ZHAO Junxian, CAI Zexin, SHAO Xudong, ZHANG Jingcheng, HAO Guiqiang, SHI Xiaona. NUMERICAL ANALYSIS ON SEISMIC PERFORMANCE OF RESILIENT STEEL BEAM-COLUMN JOINTS USING SUSPENDED CONNECTIONS[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(8): 79-86. doi: 10.13204/j.gyjzG20012301

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NUMERICAL ANALYSIS ON SEISMIC PERFORMANCE OF RESILIENT STEEL BEAM-COLUMN JOINTS USING SUSPENDED CONNECTIONS

doi: 10.13204/j.gyjzG20012301

1. State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510641, China;
2. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China;
3. Xinjiang Architectural Design Institute, Urumqi 830002, China;
4. Zhongtu International Architectural Design Co., Ltd., Shijiazhuang 050000, China

Received Date: 2020-01-23
Available Online: 2021-11-10
Publish Date: 2021-11-10

Abstract

Abstract

In order to solve the problem that the residual defomation at the bean ends of steel frame caused by platic damage after the earthquake is too large to be repaired, a new resilient steel beam-column joint featured with low damage and easy maintenance is proposed. The top of the upper flanges of the beams adopt suspended shear connections to form the center of rotation. The bottom flanges of the beams are connected by buckling-restrained plate (BRP), which is used to dissipate seismic energy. ABAQUS finite element software was used to study the mechanical performance of the new joint, in which the suspended connections with steel angle bolted configuration and steel angle welded configuration on the top flange were considered, and their performance was compared with the traditional welded joint. The results showed that the new joint had comparable stiffness to the traditional one, and energy dissipation was concentrated in the BRP. Thus, damage and local buckling near the beam end could be avoided and resiliency of the joint could be significantly improved. In elasto-plastic range, the rotation center of the new joint concentrated near the beam top flange, and bending moment was contributed mainly by the axial force from the BRP and the suspended connection, with stable cyclic performance. The configuration of suspended connection did had little effect on the performance of the new joint.
- resilience,
- steel frame,
- beam-column connection,
- suspended connection,
- buckling-restrained plate,
- finite element analysis

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References(13)

References

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