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Advances in Concrete Construction Volume 8, Number 4, December 2019 , pages 257-267 DOI: https://doi.org/10.12989/acc.2019.8.4.257 |
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Numerical analysis of the seismic performance of RHC-PVCT short columns |
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Jianyang Xue, Xiangbi Zhao, Xiaojun Ke, Fengliang Zhang and Linlin Ma
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| Abstract | ||
| This paper presents the results of cyclic loading tests on new high-strength concrete (HC) short columns. The seismic performance and deformation capacity of three reinforced high-strength concrete filled Polyvinyl Chloride tube (RHCPVCT) short columns and one reinforced high-strength concrete (RHC), under pseudo-static tests (PSTs) with vertical axial force was evaluated. The main design parameters of the columns in the tests were the axial compression ratio, confinement type, concrete strength, height-diameter ratio of PVCT. The failure modes, hysteretic curves, skeleton curves of short columns were presented and analyzed. Placing PVCT in the RHC column could be remarkably improved the ultimate strength and energy dissipation of columns. However, no fiber element models have been formulated for computing the seismic responses of RHCPVCT columns with PVT tubes filled with high-strength concrete. Nonlinear finite element method (FEM) was conducted to predict seismic behaviors. Finite element models were verified through a comparison of FEM results with experimental results. A parametric study was then performed using validated FEM models to investigate the effect of several parameters on the mechanical properties of RHC-PVCT short columns. The parameters study indicated that the concrete strength and the ratio of diameter to height affected the seismic performance of RHC-PVCT short column significantly. | ||
| Key Words | ||
| high-strength concrete; pseudo-static tests; high-strength concrete filled PVCT; seismic performance; finite element method | ||
| Address | ||
| Jianyang Xue: School of Civil Engineering, Xi\'an University of Architecture and Technology, Xi\'an 710055, China Xiangbi Zhao: School of Civil Engineering, Xi\'an University of Architecture and Technology, Xi\'an 710055, China Xiaojun Ke: College of Civil Engineering and Architecture, Guangxi University, Nanning 530004, China Fengliang Zhang: Shaanxi Institute of Architecture Science, Xi\'an 710082, China Linlin Ma: School of Civil Engineering, Xi\'an University of Architecture and Technology, Xi\'an 710055, China | ||
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