Experimental and Numerical Study on the Seismic Performances of Reinforcement-Embedded RC Column-to-Precast Cap Beams with Socket Connections

Accelerated bridge construction (ABC) has attracted much attention in China as a new and efficient construction method. However, the seismic performance of the connections between precast piers and other structures limits the application of ABC in medium and high seismic zones. In this paper, a quas...

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Bibliographic Details
Published in:Buildings (Basel) 2023-09, Vol.13 (9), p.2367
Main Authors: Peng, Wenqiang, Lu, Wenliang, Liu, Sitian, Liu, Yong, Xu, Linfeng, Li, Fenglin
Format: Article
Language:English
Subjects:
accelerated bridge construction
Accuracy
Analysis
Bearing capacity
Bridge construction
Bridges
Cast in place
Concrete
finite element analysis
Finite element method
Highway construction
Load
Mathematical models
Methods
Numerical analysis
Piers
quasi-static tests
Reinforcement
Seismic activity
Seismic engineering
seismic performance
Seismic response
Seismic zones
Simulation methods
socket connection
Sockets
Static tests
Strain gauges
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Summary:Accelerated bridge construction (ABC) has attracted much attention in China as a new and efficient construction method. However, the seismic performance of the connections between precast piers and other structures limits the application of ABC in medium and high seismic zones. In this paper, a quasi-static test was conducted to investigate the seismic performance differences between a cap–column socket connection (PSC) specimen, which reinforced an embedded RC column-to-precast cap beam with a socket connection, and a cast-in-place (CIP) cap–column specimen. A fiber-based finite element model that considers bond slippage between the connection reinforcement and wet joint concrete is proposed. The numerical simulation results compared with the experimental results show an error of about 12% in peak bearing capacity and about 2% in initial stiffness. The experimental and numerical results show that the PSC specimen demonstrates comparable seismic performance to the CIP specimen. Experimental results verified that the finite element model in this paper is adequate to predict the seismic responses of a precast column with a reinforcement-embedded socket connection. A reinforcement-embedded RC column-to-precast cap beam with socket connection can be an effective solution for construction in medium and high seismic areas.
ISSN:2075-5309
2075-5309
DOI:10.3390/buildings13092367