Application of FRP laminates for strengthening of a reinforced-concrete T-beam bridge structure

2001 ◽  
Vol 52 (3-4) ◽  
pp. 453-466 ◽  
Author(s):  
Osman Hag-Elsafi ◽  
Sreenivas Alampalli ◽  
Jonathan Kunin
Keyword(s):  
Reinforced Concrete ◽  
Bridge Structure ◽  
Beam Bridge ◽  
T Beam

Damage Identification of T-Beam Bridge Based on Distributed Long-Gauge Strain Mode Theory

2014 ◽  
Vol 501-504 ◽  
pp. 1352-1358
Author(s):  
Bi Tao Wu ◽  
Gang Wu ◽  
Cai Qian Yang
Keyword(s):  
Reinforced Concrete ◽  
Strain Amplitude ◽  
Health Monitoring ◽  
Damage Identification ◽  
Amplitude Variation ◽  
Strain Mode ◽  
Mode Theory ◽  
Sensor Arrangement ◽  
Beam Bridge ◽  
T Beam

Damage identification of a T-beam bridge which contains five T-beams is conducted based on distributed long - gauge strain mode theory, considering the damage and aging problems of widely used simple-supported reinforced concrete T-beam bridges. Assuming that the damage occurs in the different T-beams, the normalized strain mode is used to identify the damage. The sensitivity of the normalized strain mode of each T-beam and change rule of strain mode curve is studied at the same time. It is effective to apply modal strain amplitude variation degree to detect damages. If sensors are arranged reasonablely, a good damage identification can be obtained by utilizing distributed long-gauge strain mode theory even if the damage is slight.Some suggestions are given for the sensor arrangement and health monitoring of this kind of bridge when using the distributed long-gauge strain mode theory at last.

The Disease Treatment Measures and Intensification of Reinforced Concrete T-Shaped Girder Bridges

2012 ◽  
Vol 532-533 ◽  
pp. 321-324 ◽  
Author(s):  
Ya Xun Yang ◽  
Zhi Kui Yang ◽  
Chao Qiao
Keyword(s):  
Reinforced Concrete ◽  
Detailed Analysis ◽  
Prestressed Concrete ◽  
Bridge Construction ◽  
Disease Treatment ◽  
Girder Bridges ◽  
Good Economy ◽  
Treatment Measures ◽  
Beam Bridge ◽  
T Beam

Reinforced concrete and Prestressed concrete T-beam bridge are widely used because they have the features of good economy and easy construction in bridge construction. However, with the increase in traffic and the growth of hours of operation, diseases like the increase of the deflection in this bridge,the more cracks,etc.,are being emerging gradually.According to the disease of Chun Ma Bridge while that is being used, we have made a detailed analysis,and proposed purposeful measures to deal with the disease as well as the design to reinforce the bridge,solved the problem of the safety in the bridge operation. This article have made a good in-depth discussion and analysis on the T-beam retrofitting,and it will have a guidance significance for the similar bridges in the future.

scholarly journals Simulating the Effects of Surface Roughness on Reinforced Concrete T Beam Bridge under Single and Multiple Vehicles

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Rahul Kalyankar ◽  
Nasim Uddin
Keyword(s):  
Surface Roughness ◽  
Reinforced Concrete ◽  
Dynamic Amplification Factor ◽  
Variable Surface ◽  
Multiple Vehicles ◽  
Single Vehicle ◽  
Spatial System ◽  
Road Surface Roughness ◽  
Beam Bridge ◽  
T Beam

This research focuses on the application of the spatial system of finite element modeling for the vehicle-bridge interaction on reinforced concrete US Girder Bridge in order to obtain the effect of surface roughness. Single vehicle and multiple vehicles on reinforced concrete T beam bridge were studied with variable surface roughness profiles. The effects of six different surface roughness profiles (very good, good, measured, average, poor, and very poor) were investigated for vehicle-bridge interaction. The values of the Dynamic Amplification Factor (DAF) were obtained for single and multiple vehicles on T Beam Bridge for different surface roughness profiles, along with the distances between the axles of heavy vehicle. It was observed that when the bridge has very good, good, measured, and average surface roughness, the DAF values for the single vehicle over the bridge were observed to be within acceptable limits specified by AASHTO. However, for the bridge with multiple vehicles only very good and measured surface roughness profiles showed a DAF and vehicle axle distances within the acceptable limits. From the current studies, it was observed that the spatial system showed reliable responses for predicting the behavior of the bridge under variable road surface roughness conditions and was reliable in vehicle axle detection, and therefore, it has a potential to be use for realistic simulations.

Study on the effect of load level and carriageway slab thickness on fatigue performance of concrete T-girder bridges

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Zizheng Liu ◽  
Tianlai Yu ◽  
Linlin Zhang
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Fatigue Damage ◽  
Load Level ◽  
Fatigue Performance ◽  
Fatigue Load ◽  
Content Type ◽  
Load Tests ◽  
Beam Bridge ◽  
T Beam

PurposeThe effects of fatigue load level and plate thickness on the fatigue performance of reinforced concrete T-beam bridges.Design/methodology/approachFatigue load tests were performed based on the fatigue damage theory of reinforced concrete, combined with finite element model analysis. The other conditions are controlled separately, and the fatigue performance of the T-beam bridge carriageway slab under different fatigue load levels and different plate thicknesses is studied.FindingsThe fatigue process of the carriageway slab of a reinforced concrete T-beam bridge is divided into three stages: fatigue damage generation, fatigue damage development and fatigue failure. Under certain other conditions, as the fatigue load level increases, the fatigue damage of the carriageway slab accelerates; as the thickness of the carriageway slab increases, the fatigue resistance of the carriageway slab improves.Research limitations/implicationsTests and simulations have been carried out, but have not been applied to actual engineering for the time being.Practical implicationsIncreasing the thickness of the carriageway slab in actual engineering is conducive to improving the fatigue performance of the bridge, and heavy-duty traffic has a greater impact on the durability of the bridge.Social implicationsIt has certain reference value for bridge design, inspection and subsequent maintenance and reinforcement.Originality/valueThe originality of this article lies in designing and carrying out static and cyclic load tests separately, while introducing material damage models based on a large number of references and combining finite element analysis to consider the impact of a specific factor on fatigue performance. The test and analysis results can provide reference for bridge design and inspection.

Research of Strength of Dongji Reinforced Concrete T-Beam Bridge

2011 ◽  
Vol 243-249 ◽  
pp. 2000-2003
Author(s):  
Xiao Zhong Zhang ◽  
Yong Bing Liu ◽  
Wei Xin Hu ◽  
Jing Song Zhu
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Research Work ◽  
Rational Basis ◽  
Technology Research ◽  
Disease Characteristics ◽  
Finite Element Technology ◽  
Beam Bridge ◽  
T Beam

Based on the investigation and detection of Dongji Bridge, a reinforced concrete (RC) T-beam bridge, the major diseases of the bridge was identified. The disease characteristics and rules are classified, the strength of the bridge was analyzed by finite element technology. Research is expected to provide scientific and rational basis for maintenance and reinforcement of Dongji bridge and same style bridges, and lay a foundation for further research work for RC T-beam bridges.

In-service evaluation of a reinforced concrete T-beam bridge FRP strengthening system

2004 ◽  
Vol 64 (2) ◽  
pp. 179-188 ◽  
Author(s):  
Osman Hag-Elsafi ◽  
Sreenivas Alampalli ◽  
Jonathan Kunin
Keyword(s):  
Reinforced Concrete ◽  
Service Evaluation ◽  
Frp Strengthening ◽  
Beam Bridge ◽  
T Beam

Load Distribution and Shear Strength Evaluation of an Old Concrete T-Beam Bridge

2000 ◽  
Vol 1696 (1) ◽  
pp. 52-62 ◽  
Author(s):  
Riadh Al-Mahaidi ◽  
Geoff Taplin ◽  
Armando Giufre
Keyword(s):  
Shear Strength ◽  
Reinforced Concrete ◽  
Load Distribution ◽  
Monitoring Program ◽  
Shear Capacity ◽  
Load Test ◽  
Load Rating ◽  
Element Analysis ◽  
Beam Bridge ◽  
T Beam

There are about 330 T-beam bridges in the Australian state of Victoria that were built before 1950. Australia-wide there are nearly 1,000 of these early T-beam bridges. The shear capacity of these bridges, when assessed in accordance with current codes of practice, is in some cases not adequate for the current design loading. In 1996, VicRoads, the Victorian state road authority, initiated a project to enable a more accurate assessment of the shear capacity of these bridges to be made so that decisions on load rating or replacement could be made. An analysis of an existing reinforced concrete T-beam bridge that had been identified for a load test to failure was commissioned. The purpose of the analysis was to predict the load distribution behavior and the ultimate strength and to advise on the testing and monitoring program. After successful load testing of the bridge, a comprehensive analysis of the observed behavior was carried out and compared with the theoretical models. The pre-and posttesting analysis, which was undertaken with linear and nonlinear finite element analysis and with the modified compression field theory, are described and the analysis results are compared with the real behavior of the tested bridge. In particular, the load distribution in the elastic range and the ultimate shear strength of the reinforced concrete T-beams are discussed. The consequences of these findings on the load rating procedures are discussed, and a strategy for rating old reinforced concrete T-beam bridges is outlined.

Sign in / Sign up

Export Citation Format

Share Document