Load Rating of Curved Composite Steel I-Girder Bridges through Load Testing with Heavy Trucks

2006 ◽  
Author(s):  
Dan P. Krzmarzick ◽  
Jerome F. Hajjar
Keyword(s):  
Load Rating ◽  
Load Testing ◽  
Girder Bridges ◽  
Heavy Trucks ◽  
Composite Steel

scholarly journals Development of heavy truck models and their effects on girder bridges

2021 ◽  
Author(s):  
Lang Liu ◽  
◽  
Lexian Zhang ◽  
Jie Wang ◽  
Hong Yang ◽  
...  
Keyword(s):  
Bending Moment ◽  
Highway Bridges ◽  
Load Effect ◽  
Girder Bridges ◽  
Heavy Trucks ◽  
Bridge Model ◽  
Potential Factor ◽  
Heavy Truck ◽  
Beam Bridge ◽  
T Beam

The traffic on highway bridges has been increasing in both volume and magnitude, which even has become one of the main reasons leading to damages and collapse of bridges. Most of the existing regulations for overloading checking are carried out based on various limits of gross vehicle weights and axle loads. However, the results of relevant researches show that weight is only a potential factor but not the dominating factor in threatening the safety of bridges. In this study, the concept of load-effect-based heavy truck is proposed for overloading checking, and then three years of WIM data were collected and used to develop heavy truck models for each truck type, based on the understanding of the characteristics and configurations of heavy trucks as well as the distribution of their main parameters. Furthermore, the typical heavy truck models selected and their possible combinations are applied to a simply supported pre-stressed concrete T-beam bridge model with three loading levels, considering one-lane, two-lane and three-lane loaded respectively, then the induced load effect, deflection and stress are discussed for 20 loading cases. The results show the bending moment caused by heavy trucks moving on multiple lanes is 1.6 times the value of the standard truck model in Chinese specification, and the eccentric loading due to a very heavy vehicle moving on single lane usually lead to more severe effect.

Composite Steel I-Girder Bridges

2014 ◽  
pp. 171-216
Author(s):  
Lian Duan ◽  
Yusuf Saleh ◽  
Steve Altman
Keyword(s):  
Girder Bridges ◽  
Composite Steel

Strengthening Existing Non-Composite Steel Girder Bridges by the Use of Post-Installed Shear Connectors

2008 ◽  
Vol 17 (19) ◽  
pp. 198-199 ◽  
Author(s):  
Gunup Kwon ◽  
Michael D. Engelhardt ◽  
Richard E. Klingner
Keyword(s):  
Steel Girder ◽  
Shear Connectors ◽  
Girder Bridges ◽  
Steel Girder Bridges ◽  
Composite Steel

scholarly journals Inspection and Load Rating of P-T Segmental Bridges

2019 ◽  
Author(s):  
Brett W. Sauter ◽  
Alex P. Durbak
Keyword(s):  
Ronald Reagan ◽  
Load Rating ◽  
Destructive Testing ◽  
Box Girder Bridges ◽  
Element Analysis ◽  
Impact Echo ◽  
Horizontally Curved ◽  
Girder Bridges ◽  
Concrete Box Girder Bridges ◽  
Ground Penetrating

<p>The interchange of the Veterans Memorial Tollway (I-355) and the Ronald Reagan Memorial Tollway (I-88) in Downers Grove, Illinois includes four post-tensioned (P-T) segmental concrete box girder bridges erected with different techniques. Built in 1988, they range in length from 170m (558’) to over 610m (2,000’) on horizontally curved alignments To maintain the integrity of this vital infrastructure, the Illinois Tollway tasked Ciorba Group to perform full in-depth inspection, material testing, assessment of the P-T condition, and load rating. As part of this project we performed non-destructive testing of the P-T strands at select locations using ground penetrating radar and impact echo technology.</p><p>After the detailed inspection, the bridges were load rated taking into account the deterioration noted and using a time dependent Finite Element Analysis. We re-calculated all stresses as “locked-in” during bridge erection. The ramp bridges were load rated for the current single lane configuration as well as a potential future two lane configuration. An overall load rating and condition report was prepared which evaluated various bridge repairs and strengthening options including the use of UHPC structural overlay.</p>

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