Seismic performance analysis of precast segmental bridge columns with self-centering energy dissipation device

2021 ◽  
Author(s):  
Hui Jiang ◽  
Chen Li ◽  
Xiaoyu Bai ◽  
Guangsong Song
Keyword(s):  
Energy Dissipation ◽  
Performance Analysis ◽  
Seismic Performance ◽  
Bridge Columns ◽  
Segmental Bridge

Seismic performance of self-centering precast segmental bridge columns under different lateral loading directions

2020 ◽  
Vol 221 ◽  
pp. 111037 ◽  
Author(s):  
Junfeng Jia ◽  
Kaidi Zhang ◽  
Suiwen Wu ◽  
Yang Guo ◽  
Xiuli Du ◽  
...  
Keyword(s):  
Seismic Performance ◽  
Bridge Columns ◽  
Lateral Loading ◽  
Segmental Bridge

scholarly journals Influencing factors of residual drifts of precast segmental bridge columns with energy dissipation bars

2018 ◽  
Vol 22 (1) ◽  
pp. 126-140 ◽  
Author(s):  
Zhong-Kui Cai ◽  
Zheng Zhou ◽  
Zhenyu Wang
Keyword(s):  
Energy Dissipation ◽  
Influencing Factors ◽  
Design Procedure ◽  
Bridge Columns ◽  
Hysteretic Behavior ◽  
Design Parameters ◽  
Seismic Capacity ◽  
Residual Drift ◽  
Bridge Column ◽  
Segmental Bridge

The energy dissipation bar has been proven to be an effective way to improve the lateral strength and the seismic capacity of the precast segmental bridge column. To date, however, investigations on how the main design parameters affect the residual drift of such bridge columns are quite limited. Focusing on this research gap, a novel numerical simulation method was proposed in this article to investigate the influencing factors of residual drift of precast segmental bridge columns with energy dissipation bars. First, the refined fiber element model was developed based on the OpenSees software package, considering the bond slip phenomenon at the column end and the boundary condition at the interface between the two adjacent segments. Then, the proposed numerical model was validated by comparing the simulated hysteretic behavior of the precast segmental bridge columns with available experimental data. After that, cyclic analyses were performed on 288 precast segmental bridge column models with different design parameters. Four important influencing factors were investigated, including the post-tensioning force, gravity load, energy dissipation bar ratio, and shear span ratio. According to the analysis results, some suggestions were provided for the practical design procedure of the energy dissipation bar reinforced precast segmental bridge columns.

Seismic Performance and Effects of Different Joint Shapes for Unbonded Precast Segmental Bridge Columns

2016 ◽  
Vol 32 (4) ◽  
pp. 427-433
Author(s):  
H.-L. Wang ◽  
S.-W. Liu ◽  
Z. Zhang
Keyword(s):  
Seismic Performance ◽  
Residual Deformation ◽  
Time History ◽  
Bridge Columns ◽  
Nonlinear Time History Analysis ◽  
Backbone Curve ◽  
Coulomb’S Friction ◽  
Plane Contact ◽  
Nonlinear Time History ◽  
Segmental Bridge

AbstractTo study the seismic performance and the effects of different joint shapes for unbonded precast segmental bridge columns under low-reversed cyclic loading, two 3-D finite element (FE) models respectively using plane-contact joints and shear resistant joints were established. In the FE models, the mechanical behaviors of concrete and tendons were respectively described by the damage-plastic model and the bilinear model, and the contact criteria was based on Coulomb's Friction. The results of nonlinear time history analysis showed that the deformation of the columns was mainly composed of alternately open-closed joints, and the failure of the column was mainly caused by concrete crush on the bottom segment. Compared with two model's hysteresis loop, backbone curve, ductility and residual deformation, it was found that the column with shear resistant joints had longer stable period of strength, better ductility, and smaller residual displacement than the column with plane-contact joints, so it had better seismic performance.

Seismic performance of precast segmental bridge columns repaired with CFRP wraps

2020 ◽  
Vol 243 ◽  
pp. 112218
Author(s):  
Yuye Zhang ◽  
Armin Tabandeh ◽  
Yu Ma ◽  
Paolo Gardoni
Keyword(s):  
Seismic Performance ◽  
Bridge Columns ◽  
Segmental Bridge

Seismic Behavior of Precast Segmental Bridge Columns with Carbon Fibre Reinforcement as Energy Dissipation Bars

2012 ◽  
Vol 157-158 ◽  
pp. 1148-1152
Author(s):  
Ya Wang ◽  
Zhan Yu Bu ◽  
Lei Hu
Keyword(s):  
Energy Dissipation ◽  
Carbon Fibre ◽  
Precast Concrete ◽  
Damping Ratio ◽  
Bridge Columns ◽  
Displacement Curve ◽  
Fibre Reinforcement ◽  
Competitive Response ◽  
Static Test ◽  
Segmental Bridge

Precast construction is prevailing from China to America and Europe for its advantage in shortening construction schedule, mitigating environment pollution and reducing life cycle costs. Precast segmental bridge columns are a new structural system, whose widespread to high seismicity is slow due to concern of their seismic response. Carbon fibre reinforcement is a new material with high strength and well corrosion protection. The purpose of this contribution is to explore the applicable of carbon fibre reinforcement in reducing seismic damage and enhancing the lateral bearing capacity in precast concrete columns. The effect of partial steel reinforcement energy dissipation bars being replaced with carbon fibre bars in precast segmental bridge columns was investigated. The simulation model was proved valid by comparison with pseudo static test results. Then parametric study of amount of carbon fibre on the force-displacement curve, damping ratio, energy dissipation and joint opening was conducted. The results show the carbon fibre reinforcement is applicable in precast segmental bridge columns with competitive response behavior over its mild reinforcement counterpart.

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