Journal article
Impact analysis of I-Lam sandwich system for over-height collision protection of highway bridges
Engineering structures, Vol.26(7), pp.1003-1012
2004
Handle:
https://hdl.handle.net/2376/117954
Abstract
Due to increased traffic volumes and incidence of impact damaged to bridge structures, there is a pressing need to develop a collision protection system for highway bridges against over-height truck impact. In this study, a linear elastic model for the impact response of bottom face sheet-rigidly supported sandwich structures including shear-off effect is developed. The solutions for a discrete model and concentrated and distributed loading cases for collision protection I-Lam system are obtained, of which the contact force history and maximum deflection are predicted. Compared to the LS-DYNA finite element analysis (FEA), the relatively simple analytical methods proposed accurately predict the impact response. The discrete model shows a better correlation with FEA predictions, while the model with distributed forces overestimates the deflection of the top face sheet but under-evaluates the peak contact force. The developed models including the shear-off mechanism can be used to approximate the impact response of rigidly supported sandwich structures hit by an over-height truck. The two important impact factors, i.e. the maximal deflection and peak contact force, can be used in primary design and optimization of collision protection sandwich structures.
Metrics
11 Record Views
Details
- Title
- Impact analysis of I-Lam sandwich system for over-height collision protection of highway bridges
- Creators
- Pizhong Qiao - Department of Civil Engineering, Auburn Science and Engineering Center, The University of Akron, 244 Sumner Street, Akron, OH 44325-3905, USAMijia Yang - Department of Civil Engineering, Auburn Science and Engineering Center, The University of Akron, 244 Sumner Street, Akron, OH 44325-3905, USAAyman S Mosallam - Department of Civil and Environmental Engineering, University of California at Irvine, Irvine, California 92697-2175, USA
- Publication Details
- Engineering structures, Vol.26(7), pp.1003-1012
- Academic Unit
- Civil and Environmental Engineering, Department of
- Publisher
- Elsevier Ltd
- Identifiers
- 99900548018201842
- Language
- English
- Resource Type
- Journal article