Affiliation:
1. The City College of New York
2. New York State Department of Transportation
Abstract
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.
Publisher
Trans Tech Publications, Ltd.
Reference14 articles.
1. K. Wardhana and F.C. Hadipriono, Analysis of Recent Bridge Failures in the United States. Journal of Performance of Constructed Facilities, Vol. 17, No. 3, (2003).
2. New York State Department of Transportation. 1996. Bridge safety assurance, Collision Vulnerability Manual, Albany, New York.
3. American Association of State Highway and Transportation Officials Load and Resistance Factor Design. 2007. AASHTO-LRFD Bridge Design Specifications-fourth edition, AASHTO, Washington, D. C.
4. E. -T. Sherif and E. Severino, Vehicle Collision with Bridge Piers, Journal of Structure Engineering, Vol. (10), 2005, pp: 345-353.
5. Z. Yi, A.K. Agrawal, M. Ettouney, and S. Alampalli, Finite Element Simulation of Blast Loads on Reinforced Concrete Structures using LS-DYNA. 2007 Structures Congress: New Horizons and Better Practices, Long Beach, CA.
Cited by
35 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献