Dynamic characterization of multiple identical spans of a steel girder bridge

2012 ◽  
pp. 3464-3471
Author(s):  
R Maestri ◽  
E Fernstrom ◽  
K Grimmelsman
Keyword(s):  
Dynamic Characterization ◽  
Steel Girder ◽  
Steel Girder Bridge ◽  
Girder Bridge

Characterization of operational vibrations of highway bridges Via Lidar

2021 ◽  
Author(s):  
Adriana Trias
Keyword(s):  
Physical Model ◽  
Natural Frequencies ◽  
Highway Bridges ◽  
Physical Models ◽  
Highway Bridge ◽  
Steel Girder ◽  
Use Of Data ◽  
Steel Girder Bridge ◽  
Girder Bridge

<p>During the examination of data obtained from scanning an operational steel girder bridge, local ripples were noted in horizontal elements that were expected to be planar in nature (such as girder flanges). It was hypothesized that these ripples are a result of the bridge vibrating under truck traffic. The objective of this paper is to examine this hypothesis through the use of data obtained from an operating highway bridge together with the use of numerical and physical models. After analyzing the data, by estimating the distance between the peak of these ripples (and translating this into time using the data acquisition metrics) the frequency of the vibrating object can be estimated. For the operating bridge and physical model employed in this research, the natural frequencies were estimated within 2% to 10% and 0,22% to 5%, respectively.</p>

Life Cycle Cost Management Strategy on Corrosion Deterioration and Fatigue Damage of Steel Girder Bridge

2008 ◽  
Vol 385-387 ◽  
pp. 845-848
Author(s):  
Moe M.S. Cheung ◽  
Kevin K.L. So ◽  
Xue Qing Zhang
Keyword(s):  
Life Cycle ◽  
Fatigue Damage ◽  
Life Cycle Cost ◽  
Management Strategies ◽  
Maintenance Cost ◽  
Steel Girder ◽  
Damage Models ◽  
Failure Cost ◽  
Steel Girder Bridge ◽  
Girder Bridge

This paper proposes a life-cycle cost (LCC) management methodology that integrates corrosion deterioration and fatigue damage mechanisms. This LCC management methodology has four characterized features: (1) corrosion deterioration and fatigue damage models are used to predict the time when the pre-defined limits are reached; (2) the performance of the steel girder is measured by condition state sets in which deflection, moment and shear capacities and fatigue strength limits are considered altogether; (3) the cost-effectiveness of management strategies are measured by the performance improvement per unit of money spent; and (4) the LCC model includes initial design/construction cost, inspection cost, maintenance cost, repair/rehabilitation cost and failure cost. A steel girder bridge is used as an example to demonstrate the application of the proposed LCC management methodology.

Steel Girder Bridge with RC Deck Retrofit From Non-Composite to Composite Behaviour

2016 ◽  
Author(s):  
Abheetha Peiris ◽  
Issam Elias Harik
Keyword(s):  
Field Tests ◽  
High Strength ◽  
The United States ◽  
Field Application ◽  
Steel Girder ◽  
Shear Connectors ◽  
Before And After ◽  
Steel Girder Bridge ◽  
Girder Bridge ◽  
Concrete Deck

In the past, a number of steel girder-reinforced concrete deck bridges on county roads in the United States have been built as non-composite. Most of these bridges currently have load postings limiting the capacity of bus and truck loads on their roadways. Recent research showed that post installed high strength bolts could be used as shear connectors in rehabilitation work to achieve partial composite design by deploying 30% to 50% of the connectors typically required for a full composite design. This paper presents details on the analysis, design, and field application of post-installed shear connectors on a non-composite concrete deck steel girder bridge in Kentucky. In order to minimize traffic disruption and construction costs, the shear connectors were inserted on the bottom side of the deck through the top flange of the steel girder. While the load rating increased by 132%, field tests conducted before and after installation of the shear connectors showed that the bridge's live load deflections were reduced by more than 27%.

Field Measurements on Steel Girder Bridge with Skewed Supports Utilizing Lean-On Bracing

2009 ◽  
Author(s):  
Jeremiah Fasl ◽  
Michelle Romage ◽  
Todd Helwig ◽  
Reagan Herman ◽  
Karl Frank
Keyword(s):  
Field Measurements ◽  
Steel Girder ◽  
Steel Girder Bridge ◽  
Skewed Supports ◽  
Girder Bridge

Removal of Diaphragms from Three-Span Steel Girder Bridge

2000 ◽  
Vol 5 (3) ◽  
pp. 267-269 ◽  
Author(s):  
Martin P. Burke ◽  
J. M. Stallings ◽  
T. E. Cousins ◽  
T. E. Stafford
Keyword(s):  
Steel Girder ◽  
Steel Girder Bridge ◽  
Girder Bridge

Modal analysis of a three-span curved steel girder bridge

2000 ◽  
Author(s):  
Bryant G. Nielson ◽  
Kevin C. Womack ◽  
Marvin W. Halling
Keyword(s):  
Modal Analysis ◽  
Steel Girder ◽  
Steel Girder Bridge ◽  
Girder Bridge ◽  
Curved Steel
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