State of Practice for the Design of Bridge Fender Systems with Polymeric Materials
Pile supported bridge fender systems protect bridge piers located in navigable waters. Due to their resistance to the environment, polymer materials are being used to construct these fender systems. This paper evaluates the design of polymer fender systems using the American Association of State Highway and Transportation Officials Load and Resistance Factor Design (AASHTO LRFD) Bridge Design Specifications and other relevant national specifications. The results have shown that in the case where deflection governs the design of the fender system, shear deformations must be considered. When codes for the structural capacity of the fender materials were evaluated, the results showed that many of the materials being produced fall outside the scope of existing standards. The main breakdowns in the existing specifications occur when implementing ASTM standard tests. Namely, the AASHTO LRFD Guide Specifications for Concrete Filled FRP Tubes and the American Society of Civil Engineers (ASCE) Pre-standard for Load & Resistance Factor Design of Pultruded Fiber Reinforced Polymer (FRP) Structures cannot be applied to fiber reinforced polymer tubes with circular cross-sections. This occurs because flat balanced and symmetric coupons cannot be sampled from a round tube. ASTM D7258-14 Standard Specification for Polymeric Piles is based on maximum flexural stress which cannot be reliably determined for the available pile products due to their failure modes. Ultimately, a design procedure implementing tests of full-scale pile sections was presented.
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Supplemental Notes:
- This paper was sponsored by TRB committee AFF80 Standing Committee on Structural Fiber Reinforced Polymers.
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Corporate Authors:
500 Fifth Street, NW
Washington, DC United States 20001 -
Authors:
- Bechtel, Andrew
- Krstic, Vedrana
- Mankbadi, Raymond
- Ramakrishna, Aravinda
- Santullo, Lauren
- Torres, Alberto
- Zureick, Abdul-Hamid
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Conference:
- Transportation Research Board 96th Annual Meeting
- Location: Washington DC, United States
- Date: 2017-1-8 to 2017-1-12
- Date: 2017
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; References;
- Pagination: 13p
- Monograph Title: TRB 96th Annual Meeting Compendium of Papers
Subject/Index Terms
- TRT Terms: Bridge design; Deflection; Evaluation and assessment; Fenders (Wharves); Load and resistance factor design; Plastics; Standards; State of the practice; Support piles
- Identifier Terms: AASHTO LRFD Bridge Design Specifications
- Subject Areas: Bridges and other structures; Design; Highways; Materials;
Filing Info
- Accession Number: 01626549
- Record Type: Publication
- Report/Paper Numbers: 17-01014
- Files: TRIS, TRB, ATRI
- Created Date: Feb 27 2017 9:25AM