Development, Testing, and Analytical Modeling of Fiber-reinforced Polymer Bridge Deck Panels
Title | Development, Testing, and Analytical Modeling of Fiber-reinforced Polymer Bridge Deck Panels PDF eBook |
Author | Hesham Tuwair |
Publisher | |
Pages | 314 |
Release | 2015 |
Genre | Fiber-reinforced concrete |
ISBN |
"A fiber-reinforced, polyurethane foam core was developed, tested, and evaluated as a possible replacement for the costly honeycomb core that is currently used to manufacture fiber-reinforced polymer (FRP) bridge deck panels. Replacing these panels would reduce both initial production costs and construction times while also enhancing structural performance. Experimental, numerical, and analytical investigations were each conducted. Three different polyurethane foam (PU) configurations were used for the inner core during the study's first phase. These configurations consisted of a high-density PU foam (Type 1), a gridwork of thin, interconnecting, glass fiber/resin webs that formed a bidirectional gridwork in-filled with a low-density PU foam (Type 2), and a trapezoidal-shaped, low-density PU foam that utilized E-glass web layers (Type 3). Based on the experimental results of this phase, the Type 3 core was recommended to move forward to the second phase of the study, where a larger-scale version of the Type 3, namely "−mid-scale panels," were tested both statically and dynamically. Analytical models and finite element analysis (FEA) were each conducted during a third phase. Analytical models were used to predict critical facesheet wrinkling that had been observed during phase two. A three-dimensional model using ABAQUS was developed to analyze each panel's behavior. A parametric study considering a wide variety of parameters was also conducted to further evaluate the behavior of the prototype panel. The fourth phase of this research investigated the performance of Type 3 panels under exposure to various environmental conditions to duplicate seasonal effects in Midwestern states. The results gathered from these four phases showed that the proposed Type 3 panel is a cost effective alternative to both honeycomb and reinforced concrete bridge decks."--Abstract, page iv.
FRP Deck and Steel Girder Bridge Systems
Title | FRP Deck and Steel Girder Bridge Systems PDF eBook |
Author | Julio F. Davalos |
Publisher | CRC Press |
Pages | 340 |
Release | 2013-03-26 |
Genre | Technology & Engineering |
ISBN | 1439877629 |
This book presents the analysis and design of fiber-reinforced polymer (FRP) bridge decks, which have been increasingly implemented in rehabilitation projects and new construction due to their reduced weight, lower maintenance costs, and enhanced durability. It compiles the necessary information, based primarily on research by the authors, to facilitate the development of standards and guidelines for using FRP decks in bridge designs. The book combines analytical models, numerical analyses, and experimental investigations, which can be applied to various design formulations. It also, for the first time, offers a complete set of design guidelines.
Reliability-based Optimization of Fiber-reinforced Polymer Composite Bridge Deck Panels
Title | Reliability-based Optimization of Fiber-reinforced Polymer Composite Bridge Deck Panels PDF eBook |
Author | Michel D. Thompson |
Publisher | |
Pages | |
Release | 2004 |
Genre | Bridges |
ISBN |
A reliability-based optimization (RBO) methodology was developed and applied to fiber-reinforced polymer (FRP) bridge decks. Commercially available software was used to optimize a FRP bridge deck panel by weight with structural reliability, stress, and deflection constraints. A methodology using optimization software, finite element analysis, and probabilistic analysis software was developed to examine the effects of load and resistance uncertainties in FRP bridge deck optimization. Eight modular deck designs were considered for use in the RBO methodology. Investigations into random variable sensitivities, design variable sensitivities, wheel positions, and buckling were conducted to minimize computational effort. Five models were eventually optimized with deterministic methods and the RBO methodology. Ply thicknesses were treated as design variables. Material parameters, design variables, and load were taken as random variables in the reliability calculations. A comparison of RBO designs was made with the best candidate chosen based on deck panel weight.
Fiber Reinforced Polymer Bridge Decks
Title | Fiber Reinforced Polymer Bridge Decks PDF eBook |
Author | Judy Liu |
Publisher | Purdue University Press |
Pages | 114 |
Release | 2011-02-15 |
Genre | Transportation |
ISBN | 9781622600069 |
The overarching goal of this study was to perform a comprehensive evaluation of various issues related to the strength and serviceability of the FRP deck panels that are available in the industry. Specific objectives were to establish critical limit states to be considered in the design of FRP deck panel, to provide performance specifications to designers, and to develop evaluation techniques for the deck panels in service. Two different FRP panels were studied during the research project: a sandwich panel and a pultruded panel. The sandwich panel was initially selected for the rehabilitation case study bridge. However, for a variety of reasons outside of the scope of this study, both the sandwich panel and the initial case study bridge were dropped from consideration. A new case study bridge was selected, and new proposals from FRP deck manufacturers were solicited. At that time, the pultruded deck was selected. Analysis and experimental results related to both FRP deck panels are included in this report, as information from both decks is relevant to the overarching goal of this study. In November 2009, Sugar Creek Bridge became the first bridge in Indiana to be rehabilitated with an FRP bridge deck. An extensive study, including literature review, analysis, and load tests, suggest that the installed deck should perform well, with web buckling as the ultimate failure mode at a factor of safety of 5. Deflection limits, generally an issue with FRP decks, are satisfied with the installed deck. Meanwhile, some combination of acoustic emission methods, infrared thermography and a newly developed traveling truck deflection method show promise for non-destructive evaluation of the deck in-situ and identification of damage such as delamination of the wearing surface or web buckling. However, such methods have shown variability and could be prohibitively labor-intensive. Therefore, further evaluation is needed if such methods are to be pursued.
Developments in fiber-reinforced polymer (FRP) composites for civil engineering
Title | Developments in fiber-reinforced polymer (FRP) composites for civil engineering PDF eBook |
Author | N. Uddin |
Publisher | Elsevier Inc. Chapters |
Pages | 43 |
Release | 2013-05-15 |
Genre | Technology & Engineering |
ISBN | 0128087765 |
Abstract: The primary objective of this chapter is first to introduce and demonstrate the application of thermoplastic (woven glass reinforced polypropylene) in the design of modular fiber-reinforced bridge decks, and next the development of jackets for confining concrete columns against compression and impact loading. The design concept and manufacturing processes of the thermoplastic bridge deck composite structural system are presented by recognizing the structural demands required to support highway traffic. Then the results of the small-scale static cylinder tests and the impact tests of concrete columns are presented, demonstrating that thermoplastic reinforcement jackets act to restrain the lateral expansion of the concrete that accompanies the onset of crushing, maintaining the integrity of the core concrete, and enabling much higher compression strains (compared to CFRP composite wraps) to be sustained by the compression zone before failure occurs.
Experimental Testing and Modeling of a FRP Bridge
Title | Experimental Testing and Modeling of a FRP Bridge PDF eBook |
Author | K. Chandrashekhara |
Publisher | |
Pages | 140 |
Release | 2000 |
Genre | Bridges, Reinforced concrete |
ISBN |
Environmental Conditioning and Testing of Three Fiber Reinforced Polymer Panels
Title | Environmental Conditioning and Testing of Three Fiber Reinforced Polymer Panels PDF eBook |
Author | Andrew R. Neumann |
Publisher | |
Pages | |
Release | 2003 |
Genre | |
ISBN |
Three types of fiber reinforced polymer bridge deck panels were supplied to the University of Cincinnati. Specimens included were small-size specimens supplied by their respective manufacturers and full-size specimens obtained from the Salem Avenue bridge in Dayton, Ohio. Research performed includes: long-term environmental monitoring, load testing, and finite-element analysis. Long-term environmental monitoring was performed on small-size specimens for all three deck types. Environmental monitoring included collection of temperature and strain data over a period of nine months. Average internal mperature, coefficient of thermal expansion (in both directions), and temperature gradient were calculated for each type of panel. Load testing was performed at the University of Cincinnati Large Scale Test Facility (UCLSTF). Load tests were performed on small-size specimens and full-size specimens obtained from a bridge retrofit project. Effective flexural and shear stiffness were calculated for each panel tested. Failure load and failure type for each test are reported. Finally, a finite-element model of a full-size panel was created for one of the deck types in order to capture the effects of internal damages. Analysis results of the finite-element model are compared against experimental results.