Seismic collapse assessment of non-seismically designed circular RC bridge piers retrofitted with FRP composites

2017 ◽  
Vol 160 ◽  
pp. 901-916 ◽  
Author(s):  
Anant Parghi ◽  
M. Shahria Alam
Keyword(s):  
Bridge Piers ◽  
Frp Composites ◽  
Seismic Collapse ◽  
Rc Bridge Piers ◽  
Collapse Assessment

Post-earthquake recoverability of existing RC bridge piers retrofitted with FRP composites

2010 ◽  
Vol 24 (6) ◽  
pp. 980-998 ◽  
Author(s):  
Mohamed F.M. Fahmy ◽  
Zhishen Wu ◽  
Gang Wu
Keyword(s):  
Bridge Piers ◽  
Frp Composites ◽  
Rc Bridge Piers

Numerical evaluation on the effect of steel bar corrosion on the cyclic behaviour of RC bridge piers

2021 ◽  
Vol 44 ◽  
pp. 2393-2398
Author(s):  
Rajib Kumar Biswas ◽  
Mistuyasu Iwanami ◽  
Nobuhiro Chijiwa ◽  
Kazuhide Nakayama
Keyword(s):  
Numerical Evaluation ◽  
Bridge Piers ◽  
Cyclic Behaviour ◽  
Steel Bar ◽  
Rc Bridge Piers

Effectiveness of CFRP seismic-retrofit of circular RC bridge piers under vehicular lateral impact loading

2021 ◽  
Vol 243 ◽  
pp. 112602
Author(s):  
S.C. Zhou ◽  
C. Demartino ◽  
J.J. Xu ◽  
Y. Xiao
Keyword(s):  
Impact Loading ◽  
Seismic Retrofit ◽  
Bridge Piers ◽  
Lateral Impact ◽  
Rc Bridge Piers

scholarly journals Study on Repaired Earthquake-Damaged Bridge Piers under Seismic Load

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Jun Deng ◽  
Tonghua Liu ◽  
Weizhi Xie ◽  
Wei Lu
Keyword(s):  
Peak Load ◽  
Steel Tube ◽  
Fiber Reinforced Polymer ◽  
Bridge Piers ◽  
Seismic Load ◽  
Concrete Bridge ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Repair Materials ◽  
Rc Bridge Piers

The concrete bridge pier damaged during earthquakes need be repaired to meet the design standards. Steel tube as a traditional material or FRP as a novel material has become popular to repair the damaged reinforced concrete (RC) bridge piers. In this paper, experimental and finite element (FE) studies are employed to analyze the confinement effectiveness of the different repair materials. The FE method was used to calculate the hysteretic behavior of three predamaged circle RC bridge piers repaired with steel tube, basalt fiber reinforced polymer (BFRP), and carbon fiber reinforced polymer (CFRP), respectively. Meanwhile, the repaired predamaged circle concrete bridge piers were tested by pseudo-static cyclic loading to study the seismic behavior and evaluate the confinement effectiveness of the different repair materials and techniques. The FE analysis and experimental results showed that the repaired piers had similar hysteretic curves with the original specimens and all the three repair techniques can restore the seismic performance of the earthquake-damaged piers. Steel tube jacketing can significantly improve the lateral stiffness and peak load of the damaged pier, while the BFRP and CFRP sheets cannot improve these properties due to their thin thickness.

Robustness evaluation of CSMM based finite element for simulation of shear critical hollow RC bridge piers

2019 ◽  
Vol 37 (1) ◽  
pp. 313-344
Author(s):  
Vijay Kumar Polimeru ◽  
Arghadeep Laskar
Keyword(s):  
Finite Element ◽  
Earthquake Engineering ◽  
Bridge Piers ◽  
Fe Model ◽  
Content Type ◽  
Aspect Ratios ◽  
Linear Behavior ◽  
Non Linear ◽  
Reversed Cyclic ◽  
Rc Bridge Piers

Purpose The purpose of this study is to evaluate the effectiveness of two-dimensional (2D) cyclic softened membrane model (CSMM)-based non-linear finite element (NLFE) model in predicting the complete non-linear response of shear critical bridge piers (with walls having aspect ratios greater than 2.5) under combined axial and reversed cyclic uniaxial bending loads. The effectiveness of the 2D CSMM-based NLFE model has been compared with the widely used one-dimensional (1D) fiber-based NLFE models. Design/methodology/approach Three reinforced concrete (RC) hollow rectangular bridge piers tested under reversed cyclic uniaxial bending and sustained axial loads at the National Centre for Research on Earthquake Engineering (NCREE) Taiwan have been simulated using both 1D and 2D models in the present study. The non-linear behavior of the bridge piers has been studied through various parameters such as hysteretic loops, energy dissipation, residual drift, yield load and corresponding drift, peak load and corresponding drift, ultimate loads, ductility, specimen stiffness and critical strains in concrete and steel. The results obtained from CSMM-based NLFE model have been critically compared with the test results and results obtained from the 1D fiber-based NLFE models. Findings It has been observed from the analysis results that both 1D and 2D simulation models performed well in predicting the response of flexure critical bridge pier. However, in the case of shear critical bridge piers, predictions from 2D CSMM-based NLFE simulation model are more accurate. It has, thus, been concluded that CSMM-based NLFE model is more accurate and robust to simulate the complete non-linear behavior of shear critical RC hollow rectangular bridge piers. Originality/value In this study, a novel attempt has been made to provide a rational and robust FE model for analyzing shear critical hollow RC bridge piers (with walls having aspect ratios greater than 2.5).

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