scholarly journals Parametric Study on Dynamic Response of Fiber Reinforced Polymer Composite Bridges

2015 ◽  
Vol 2015 ◽  
pp. 1-13 ◽  
Author(s):  
Woraphot Prachasaree ◽  
Attapon Sangkaew ◽  
Suchart Limkatanyu ◽  
Hota V. S. GangaRao
Keyword(s):  
Dynamic Response ◽  
Dynamic Load ◽  
Bridge Deck ◽  
Bridge Decks ◽  
Fiber Reinforced Polymer ◽  
Upper And Lower Bounds ◽  
Fiber Reinforced ◽  
Reinforced Polymer ◽  
Dynamic Load Allowance ◽  
Bridge Models

Because of high strength and stiffness to low self-weight ratio and ease of field installation, fiber reinforced polymer (FRP) composite materials are gaining popularity as the materials of choice to replace deteriorated concrete bridge decks. FRP bridge deck systems with lower damping compared to conventional bridge decks can lead to higher amplitudes of vibration causing dynamically active bridge deck leading serviceability problems. The FRP bridge models with different bridge configurations and loading patterns were simulated using finite element method. The dynamic response results under varying FRP deck system parameters were discussed and compared with standard specifications of bridge deck designs under dynamic loads. In addition, the dynamic load allowance equation as a function of natural frequency, span length, and vehicle speed was proposed in this study. The proposed dynamic load allowance related to the first flexural frequency was presented herein. The upper and lower bounds’ limits were established to provide design guidance in selecting suitable dynamic load allowance for FRP bridge systems.

Delamination of GFRP Panels in Bridge Decks

2015 ◽  
Vol 1104 ◽  
pp. 137-142 ◽  
Author(s):  
Beata Stankiewicz
Keyword(s):  
Glass Fiber ◽  
Bridge Decks ◽  
Optical Microscope ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced Polymer ◽  
Reinforced Polymer ◽  
Glass Fiber Reinforced ◽  
Micro Cracks ◽  
Bridge Structures

Modern bridge structures need light decks with long durability and promising technical parameters. GFRP bridge deck creates possibilities in bridge designing. Parallel identification of GFRP deck panel: DTA analysis, spectroscopy analysis, scanning and optical microscope monitoring according to own investigation will be presented, in the paper. Modal, vibrations analysis is very important for bridge structures using light Glass Fiber Reinforced Polymer decks. The three 1stmodes and corresponding frequencies have been showed for chosen footbridges with GFRP ASSET system decks. The footbridges were excited by impact and human-induced vibrations. Good exploration of new material, like composite GFRP, generates potential to improve technology and make comparison analysis with traditional standard of materials. The dynamic behavior of damaged footbridge structures under moving loads has been studied. The paper is concerned with a micromechanical theory of macroscopic crack propagation due to stress-corrosion cracking in unidirectional glass-fiber-reinforced polymer composites, for bridge decks applications. The first form of damage in laminates is usually matrix micro cracks, which are intralaminar or ply cracks that traverse the thickness of the ply and run parallel to the fibers in that ply. The identification of early delamination process in footbridges GFRP deck is very important by them durability feature. Improving system for polymer resin using nanostructures is useful by aspect of reducing micro cracks and then macro cracks propagation.

Failure Analysis of Fiber-Reinforced Polymer Bridge Deck System

2003 ◽  
Vol 25 (2) ◽  
pp. 11458
Author(s):  
EA Armanios ◽  
RB Bucinell ◽  
DW Wilson ◽  
M Chiewanichakorn ◽  
AJ Aref ◽  
...  
Keyword(s):  
Failure Analysis ◽  
Bridge Deck ◽  
Fiber Reinforced Polymer ◽  
Fiber Reinforced ◽  
Reinforced Polymer
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