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

New seismic retrofit methodology for wall-type RC bridge piers

2021 ◽  
pp. 753-754
Author(s):  
K. Kawamura ◽  
A. Hata ◽  
T. Shindoh ◽  
J. Sakamoto ◽  
M. Hosotani
Keyword(s):  
Seismic Retrofit ◽  
Bridge Piers ◽  
Rc Bridge Piers

Dynamic behavior of an innovative replaceable pier structure under lateral impact loadings

2019 ◽  
Author(s):  
Chengdong Liu ◽  
Junjie Wang ◽  
Yanchen Song
Keyword(s):  
Finite Element ◽  
Impact Loading ◽  
Element Model ◽  
Bridge Piers ◽  
Shear Connector ◽  
Test Results ◽  
Lateral Impact ◽  
Repair Efficiency ◽  
Connection Component ◽  
The Finite Element Model

<p>In order to improve the repair efficiency of bridge piers subjected to vehicle and ship collisions, an innovative replaceable pier structure based on flange connection and PBL shear connector was proposed. The finite element model of the replaceable pier and the traditional pier were developed and then validated through experimental test results. The behavior of replaceable pier and connection joint under lateral impact loading was studied based on numerical simulations. Compared with the traditional pier, it shows that the ability of new replaceable pier to resist impact loading is more favorable, and the connection component of new replaceable pier is repeatable.</p>

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

scholarly journals Behavior of stainless steel–reinforced concrete piers under lateral impact loading

2017 ◽  
Vol 9 (5) ◽  
pp. 168781401770993 ◽  
Author(s):  
Guoxue Zhang ◽  
Shixiang Xu ◽  
Hongbing Xie ◽  
Xiwu Zhou ◽  
Yingfeng Wang
Keyword(s):  
Stainless Steel ◽  
Reinforced Concrete ◽  
Impact Loading ◽  
Lateral Impact ◽  
Steel Reinforced Concrete

Lateral Impact of Railroad Bridges With Hybrid Composite Beams: Finite Element Modeling and Preliminary Dynamic Behavior Study of HCB

2014 ◽  
Author(s):  
Yuan Jing ◽  
Z. John Ma ◽  
Richard M. Bennett ◽  
David B. Clarke
Keyword(s):  
Finite Element ◽  
Impact Loading ◽  
Hybrid Composite ◽  
Composite Beam ◽  
Glass Fibers ◽  
Fe Analysis ◽  
Future Research ◽  
Lateral Impact ◽  
Time Duration ◽  
Hybrid Composite Beam

Grade separations have been used along High-Speed Rail (HSR) to decrease traffic congestion and the danger that occurs at grade crossings. However, the concern with grade separations is the potential damage due to lateral impact of bridge superstructures by over-height vehicles. This is a concern with existing bridges, and lateral impact is not included in standard bridge code provisions. A new bridge technology, Hybrid Composite Beam (HCB), was proposed to meet the requirements of another HSR objective, that of a sustainable solution for the construction of new and replacement bridges in rail infrastructure. The hybrid composite beam combines advanced composite materials with conventional concrete and steel to create a bridge that is stronger and more resistance to corrosion than conventional materials. The HCB is composed of three main parts; the first is a FRP (fiber reinforced polymer) shell, which encapsulates the other two parts. The second part is the compression reinforcement which consists of concrete or cement grout that is pumped into a continuous conduit fabricated into the FRP shell. The third part of the HCB is the tension reinforcement that could consist of carbon or glass fibers, prestressed strands, or other materials that are strong in tension, which is used to equilibrate the internal forces in the compression reinforcement. The combination of conventional materials with FRP exploits the inherent benefits of each material and optimizes the overall performance of the structure. The behavior of this novel system has been studied during the last few years and some vertical static tests have been performed, but no dynamic or lateral impact tests have been conducted yet. Therefore, the main objective of this study is to evaluate the performance of HCB when subjected to lateral impact loading caused by over-height vehicles. This paper explains the advantages of HCB when used in bridge infrastructures. The commercial software ABAQUS was used to perform the finite element (FE) modeling of a 30ft long HCB. Test data was used to validate the results generated by FE analysis. A constant impact loading with a time duration of 0.1 second was applied to an area at the mid-span of the HCB. Lateral deflection and stress distribution were obtained from FE analysis, and local stress concentration can be observed from the stress contour. Full-scale beam dynamic testing will be conducted in the future research to better study the behavior of HCB when subjected to over-height vehicles.

The effect of knee braces on lateral impact loading of the knee

1989 ◽  
Vol 17 (2) ◽  
pp. 182-186 ◽  
Author(s):  
Bruce E. Baker ◽  
Edward V ◽  
Cert Orthotist ◽  
Stephen P. Bogosian ◽  
Frederick W. Werner ◽  
...  
Keyword(s):  
Impact Loading ◽  
Lateral Impact ◽  
Knee Braces

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.

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