Effects of Truck Impacts on Bridge Piers

According to Federal Highway Administration, impact by moving trucks is the 3rd leading cause of bridge failure or collapse in the country. Although current AASHTO LRFD Guide Specifications prescribe designing bridge piers by applying a 400 kips static load at a height of 4ft to improve their impact resistance, recent studies have shown that the dynamic forces because of truck impacts may be significantly higher than that recommended by the AASHTO Guide Specifications. In this paper, we present an extensive investigation on the impact of a three-span steel girder bridge with reinforced concrete piers by trucks running at different speeds through models of bridge and the truck in LS-DYNA, including a correlation between seismic and impact resistance of bridge piers. Results also present a comparison between static load prescribed by AASHTO Guide Specifications and dynamic impacts loads observed during numerical simulations. A performance based approach is proposed to design bridge piers against truck impacts.

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Pretest analysis of shake table response of a two-span steel girder bridge incorporating accelerated bridge construction connections

Frontiers of Structural and Civil Engineering ◽

10.1007/s11709-019-0590-y ◽

2019 ◽

Vol 14 (1) ◽

pp. 169-184

Author(s):

Elmira Shoushtari ◽

M. Saiid Saiidi ◽

Ahmad Itani ◽

Mohamed A. Moustafa

Keyword(s):

Accelerated Bridge Construction ◽

Shake Table ◽

Bridge Construction ◽

Steel Girder ◽

Steel Girder Bridge ◽

Girder Bridge

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Dynamic characterization of multiple identical spans of a steel girder bridge

Bridge Maintenance, Safety, Management, Resilience and Sustainability - Bridge Maintenance, Safety and Management ◽

10.1201/b12352-520 ◽

2012 ◽

pp. 3464-3471

Author(s):

R Maestri ◽

E Fernstrom ◽

K Grimmelsman

Keyword(s):

Dynamic Characterization ◽

Steel Girder ◽

Steel Girder Bridge ◽

Girder Bridge

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

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.385-387.845 ◽

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.

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

IABSE Congress, Stockholm 2016: Challenges in Design and Construction of an Innovative and Sustainable Built Environment ◽

10.2749/stockholm.2016.1964 ◽

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%.

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