Numerical Analysis of Seismic Performance of Local Post-Tensioned Prestressed Assembled Concrete Frame Beam-Column Joints

WU Junlin; YANG Hui; GUO Zhengxing

doi:10.13204/j.gyjzG22081301

Volume 53 Issue 3

Mar. 2023

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2023 > 53(3): 29-34,28

WU Junlin, YANG Hui, GUO Zhengxing. Numerical Analysis of Seismic Performance of Local Post-Tensioned Prestressed Assembled Concrete Frame Beam-Column Joints[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(3): 29-34,28. doi: 10.13204/j.gyjzG22081301

Citation:

WU Junlin, YANG Hui, GUO Zhengxing. Numerical Analysis of Seismic Performance of Local Post-Tensioned Prestressed Assembled Concrete Frame Beam-Column Joints[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(3): 29-34,28. doi: 10.13204/j.gyjzG22081301

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Numerical Analysis of Seismic Performance of Local Post-Tensioned Prestressed Assembled Concrete Frame Beam-Column Joints

doi: 10.13204/j.gyjzG22081301

WU Junlin¹,
YANG Hui^{1,3
,
,},
GUO Zhengxing²

1. School of Civil Engineering and Architecture, Jiangsu University of Science and Technology, Zhenjiang 212003, China;
2. School of Civil Engineering, Southeast University, Nanjing 210096, China;
3. Zhongyifeng Construction Group Co., Ltd., Suzhou 215021, China

Received Date: 2022-08-13

Abstract

Abstract

In order to study the seismic performance of the new dry-wet combined precast concrete beam-column joints with local post-tensioned tendons,a solid finite element model was established by ABAQUS software to simulate the joints with high strength steel reinforcement and steel ties for prestressing tendons,and to verify with the experimental results. Finally, parametric analysis was carried out on the relevant factors such as concrete strength grade, prestressing tendon tension and axial compression ratio. The results of the study show that the simulation results of the finite element model considering the slip of the reinforcement are in general agreement with the tests. The cumulative energy consumption of the joints with steel ties is about 41% of that of the joints with high-strength steel. When the concrete strength is increased from C30 to C50, the load carrying capacity of both joints increases by less than 5%. Compared with joints with high-strength steel, the increase of the prestressing tendons tension can significantly reduce the yield displacement of the joints with steel ties and improve its pre-strength, stiffness and ductility.Within the axial pressure ratio of 0.6, the increase of the axial pressure ratio only improve the ultimate load capacity of the joints with high-strength steel.
- beam-to-column joints,
- assembled structures,
- post-tensioned prestressing,
- finite element analysis,
- seismic performance

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References(15)

References

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