Vol. 16, No. 1, 2021

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Seismic performance of concrete-filled steel tube devices for precast concrete beam-column connections

Wei Huang, Gaoxing Hu, Xinwei Miao, Xinyi Liu and Haiqiao Xie

Vol. 16 (2021), No. 1, 63–88
Abstract

We develop a novel replaceable energy dissipative device for precast concrete beam-column connections. The device comprises two short concrete-filled steel tubes and a web with a opening. To better understand the seismic behavior of the device, four test specimens were subjected to a cyclic load and one specimen subjected to a monotonic load. The load-carrying capacity, stiffness, hysteretic behavior, energy dissipation capacity and ductility of the device were recorded. The test results indicate that the device has excellent plastic deformation capacity, energy dissipation capacity and ductility.

A parametric study was then carried out using finite element analysis, which showed that the index l23EI can be used to characterize the bending deformation mechanical properties of the device; usually, a larger value of l23EI means that the device has better deformation and ductility capacity.

Finally, a numerical simulation analysis of a precast concrete beam-column joint connected by the device proved that the seismic performance of the precast joint can be significantly improved in terms of the deformation capacity, energy dissipation and ductility, while the damage severity of the beam and column members is significantly reduced.

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Keywords
precast RC frame structure, beam-column connection, energy dissipation device, FE model
Milestones
Received: 15 December 2019
Revised: 18 August 2020
Accepted: 25 October 2020
Published: 12 May 2021
Authors
Wei Huang
School of Civil Engineering
Xi’an University of Architecture and Technology
No.13, Yanta Road, Yanta District, Xi’an City, Shaanxi Province
Xi’an City, 710055
China
Gaoxing Hu
School of Civil Engineering
Xi’an University of Architecture and Technology
No.13, Yanta Road, Yanta District, Xi’an City, Shaanxi Province
Xi’an City, 710055
China
Xinwei Miao
College of Science
Xi’an University of Architecture and Technology
No.13, Yanta Road, Yanta District, Xi’an City, Shaanxi Province
Xi’an City, 710055
China
Xinyi Liu
School of Civil Engineering
Xi’an University of Architecture and Technology
No.13, Yanta Road, Yanta District, Xi’an City, Shaanxi Province
Xi’an City, 710055
China
Haiqiao Xie
School of Civil Engineering
Xi’an University of Architecture and Technology
No.13, Yanta Road, Yanta District, Xi’an City, Shaanxi Province
Xi’an City, 710055
China