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Nondestructive Condition Assessment Of A Posted Bridge
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Book Synopsis Nondestructive Condition Assessment of a Posted Bridge by :
Download or read book Nondestructive Condition Assessment of a Posted Bridge written by and published by . This book was released on 1997 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are about five hundred steel-truss highway bridges in Ohio, as well as many thousands in the nation, which are more than seventy-five years old. Preservation of aged historic steel-truss bridges first requires a consideration of public safety issues. Bridges with certain structural attributes and materials are well established as having non desirable failure modes, which make them public safety hazards. These should be removed from service with the highest possible priority. If non-technical issues such as historic significance and functional adequacy are favorable, the question then becomes whether a given bridge can be preserved within the available financial and technical resources of the responsible government agency.
Book Synopsis Nondestructive Testing to Identify Concrete Bridge Deck Deterioration by :
Download or read book Nondestructive Testing to Identify Concrete Bridge Deck Deterioration written by and published by Transportation Research Board. This book was released on 2013 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: " TRB's second Strategic Highway Research Program (SHRP 2) Report S2-R06A-RR-1: Nondestructive Testing to Identify Concrete Bridge Deck Deterioration identifies nondestructive testing technologies for detecting and characterizing common forms of deterioration in concrete bridge decks.The report also documents the validation of promising technologies, and grades and ranks the technologies based on results of the validations.The main product of this project will be an electronic repository for practitioners, known as the NDToolbox, which will provide information regarding recommended technologies for the detection of a particular deterioration. " -- publisher's description.
Download or read book LTBP News written by and published by . This book was released on 2015 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Third inspection of the Virgina Pilot Bridge in Haymarket, Virginia using nondestructive evaluations.
Book Synopsis The Use of Nondestructive Testing Methods for the Condition Assessment of Concrete Bridge Girders by : Richard Cornelius Unruh
Download or read book The Use of Nondestructive Testing Methods for the Condition Assessment of Concrete Bridge Girders written by Richard Cornelius Unruh and published by . This book was released on 2004 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are over 594,000 publicly controlled bridges in the United States. Concrete and pre-stressed concrete bridges account for nearly 50% of the bridges in the US inventory. This proportion is increasing each year, as new bridges tend to be constructed of concrete. This trend makes it vital for engineers to be able to accurately assess the condition of concrete for maintenance and repair decisions. The use of nondestructive testing methods can help reduce the backlog of deficient bridges in two ways. First, these techniques will allow inspectors to get a more accurate view of the condition of a bridge. The second way by which NDT can help is by allowing inspectors to locate damage earlier. This thesis is an attempt to capture the most current ideas for a very specific application of NDT: determining the condition of reinforced concrete bridges overall and bridge girders, in particular. To this end, attention is given to why NDT is needed and what aspects of concrete condition can be addressed with NDT. Some NDT methodologies that are, or may soon be, promising for concrete applications are discussed. Case studies are presented to demonstrate how NDT can be applied to concrete bridge girders and proposals are made for future areas of study and development.
Book Synopsis Problems Associated with Nondestructive Evaluation of Bridges by : D. W. Prine
Download or read book Problems Associated with Nondestructive Evaluation of Bridges written by D. W. Prine and published by . This book was released on 1995 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bridge Deck Condition Assessment Using Destructive and Nondestructive Methods by : Brandon Tyler Goodwin
Download or read book Bridge Deck Condition Assessment Using Destructive and Nondestructive Methods written by Brandon Tyler Goodwin and published by . This book was released on 2014 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This study investigates two bridge decks in the state of Missouri using both nondestructive and destructive testing methods. The Missouri Department of Transportation (MoDOT) is responsible for the monitoring and maintenance of over 10,000 bridges. Currently monitoring of these bridges includes a comprehensive visual inspection. In this study, ground-coupled ground penetrating radar (GPR) is used to estimate deterioration, along with other traditional methods, including visual inspection, and core evaluation. Extracted core samples were carefully examined, and the volume of permeable pore space was determined for each core. After the initial investigation, the two bridges underwent rehabilitation using hydrodemolition as a method to remove loose or deteriorated concrete. Depths and locations of material removal were determined using light detection and ranging (lidar). Data sets were compared to determine the accuracy of GPR to predict deterioration for condition monitoring and rehabilitation planning of bridge decks. As shown by the lidar survey of the material removed during rehabilitation, the GPR top reinforcement reflection amplitude accurately predicted regions of deterioration within the bridge decks. In general, regions with lower reflection amplitudes, indicating more evidence of deterioration, corresponded to regions with greater depths of material removal during the rehabilitation. Also, the GPR top reinforcement reflection amplitude indicated deterioration in areas where visual deterioration was noticed from the top surface of the deck. The majority of cores with delaminations were extracted from sections where the GPR top reinforcement reflection amplitude indicated greater evidence of deterioration based on lower amplitude values."--Abstract, page iii.
Book Synopsis Nondestructive Evaluation Tools to Improve the Inspection, Fabrication and Repair of Bridges by : Glenn A. Washer
Download or read book Nondestructive Evaluation Tools to Improve the Inspection, Fabrication and Repair of Bridges written by Glenn A. Washer and published by . This book was released on 2014 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The goal of this research project in Nondestructive Evaluation (NDE) is to improve the safety and reliability of bridge through the exploration of three innovative technologies: (1) ultrasonic measurement of in-situ stress levels in gusset plates, (2) evaluation of ultrasonic testing (UT) and phased array testing, and (3) development of vehicle-mounted infrared thermography for bridge condition assessment" (page ii).
Book Synopsis Nondestructive Evaluation of Bridges and Highways by :
Download or read book Nondestructive Evaluation of Bridges and Highways written by and published by . This book was released on 1996 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bridge Condition Assessment by : United States. General Accounting Office
Download or read book Bridge Condition Assessment written by United States. General Accounting Office and published by . This book was released on 1988 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Exploring Bridge Maintenance and Asset Management by :
Download or read book Exploring Bridge Maintenance and Asset Management written by and published by . This book was released on 2011 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: With over 600,000 bridges across the United States averaging 42 years of age, annual Federal repair and rehabilitation costs for fiscal year 2010 were in the region of 7 billion dollars. Following significant public sector investment developing nondestructive evaluation (NDE) and structural health monitoring (SHM) tools for objective condition assessment, a recent workshop supported by the Federal Highway Administration's (FHWA) Exploratory Advanced Research (EAR) Program addressed the use of NDE as an effective and efficient bridge maintenance and asset management tool.
Book Synopsis Development of a Condition Assessment Method of Deteriorated Bridge Decks Based on GPR Data and Structural Response by : Dipesh Donda
Download or read book Development of a Condition Assessment Method of Deteriorated Bridge Decks Based on GPR Data and Structural Response written by Dipesh Donda and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridges are at the heart of transportation systems connecting the roads to and between the mainlands. Thus, bridges are an integral part of the economic growth of any country. They are subjected to dynamic loads of the vehicles and the environmental effects. These loads cause stress and strain cycles causing its deterioration by initiating microcracking. The deterioration is then accelerated due to the chloride attack which causes the corrosion of the steel reinforcement resulting in cracking and delamination of concrete and ultimately leads to failure. It is essential to analyze the bridge with its actual condition which is difficult with a visual inspection. This analysis can help in determining the degree of repairs needed and an approximate idea about its service life. The development of the Non-Destructive Test (NDT) methods helps assess the condition of the bridge without any kind of damage to the original structure. In the past few decades, the Non-Destructive Evaluation (NDE) with the help of Ground Penetration Radar (GPR) has gained popularity due to its ease in the evaluation of the larger areas such as bridge deck and parking lot in a shorter amount of time with sufficient training. The NDE using GPR for Structural Health Monitoring (SHM) has been still evolving with new improvements in its technology as well as the development of new methods for the analysis of its data. A positive step towards detecting the subsurface materials present in the cracks has been undertaken in this study. A methodology to detect the subsurface cracks/gaps in concrete using GPR has been developed here by preparing three concrete samples of dimensions 50 x 25 x 5 cm3, 50 x 25 x 10 cm3, and 50 x 25 x 20 cm3 in the laboratory. The detection of reinforcement of 6 mm, 10 mm, 18 mm, 20 mm diameter, as well as a 21.8 mm Fiber Reinforcement Polymer (FRP) bar, are studied along with the detection of the air gap, water gap, and gap with the salt solutions of thickness 3 mm, 4 mm, 4.8 mm, 5.8 mm and 8.8 mm under the depth of 5 cm, 10 cm, and 15 cm. The amplitude values of these parameters are studied, and a comparison is made to check the ability of GPR to detect this material in cracks and/or delamination with changes in depths. This will be helpful in analyzing the GPR data with more reliability. Along with this, a non-linear finite element model (FEM) of a bridge superstructure using a fiber element is developed. The FE model of the bridge deck is updated and analyzed using a GPR defect map. This procedure of model updating is less tedious than the previous method available in the literature and proves to be time-saving. This model updating procedure will prove to be helpful in estimating the capacity of the bridge and make a prediction for future deterioration with the help of NDE methods (here GPR).
Book Synopsis Nondestructive Testing & Identification for Bridge Rating by :
Download or read book Nondestructive Testing & Identification for Bridge Rating written by and published by . This book was released on 1994 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nondestructive dynamic field testing and structural identification studies on three (2, 20, and 43-year-old) steel-stringer bridges are presented. The bridges were rated by code procedures and by field-calibrated comprehensive 3-D finite-element models developed by structural identification. Experimentally measured and analytically simulated modal flexibilities were correlated with bridge deflections obtained under proof-load level truck-load tests.
Book Synopsis Non-destructive and Destructive Bridge Deck Condition Assessment by : Aleksandra V. Varnavina
Download or read book Non-destructive and Destructive Bridge Deck Condition Assessment written by Aleksandra V. Varnavina and published by . This book was released on 2015 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The dissertation is composed of three papers, which cover the lack of information on the specific aspects of non-destructive and destructive bridge deck assessment. In the first paper, appropriate data acquisition and processing parameters for concrete bridge deck condition assessment using ground-coupled ground penetrating radar are developed. The use of proposed parameters helps to significantly reduce acquisition and processing time, while providing engineers with reliable and detailed information on the condition of bridge deck. In the second paper, a novel approach to develop relationship between GPR data and concrete removal depth measurements collected after hydrodemolition is proposed. A linear relationship between the two is assumed, justified and corrected. Two case studies are used to verify the proposed approach. In the third paper, an integrated approach in assessing bridge deck condition is introduced. Four techniques -- visual inspection, GPR, USW, and core control -- were used to perform a bridge deck assessment. LiDAR measurement of concrete depth removal collected after hydrodemolition were used as ground truth. The advantages and disadvantages of each method are discussed. Qualitative and quantitative comparisons of data collected using non-destructive and destructive techniques are performed"--Abstract, page iv.
Book Synopsis Non-destructive Testing of Wisconsin Highway Bridges by : Alireza Ghorbanpoor
Download or read book Non-destructive Testing of Wisconsin Highway Bridges written by Alireza Ghorbanpoor and published by . This book was released on 2005 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Society of Photo-optical Instrumentation Engineers Publisher :SPIE-International Society for Optical Engineering ISBN 13 : Total Pages :334 pages Book Rating :4.3/5 (91 download)
Book Synopsis Nondestructive Evaluation of Aging Bridges and Highways by : Society of Photo-optical Instrumentation Engineers
Download or read book Nondestructive Evaluation of Aging Bridges and Highways written by Society of Photo-optical Instrumentation Engineers and published by SPIE-International Society for Optical Engineering. This book was released on 1995 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Leveraging Technologies for Condition Assessment of Multi-Girder Highway Bridges by : Shi Ye
Download or read book Leveraging Technologies for Condition Assessment of Multi-Girder Highway Bridges written by Shi Ye and published by . This book was released on 2020 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: A majority of US highway bridges were constructed in the mid-20th century. Today, bridge owners have to consider increases in traffic demands and also face concerns related to sustainability, resilience and livability which were virtually unknown in the 1950s. In this context, transportation stakeholders face increasingly complex decisions for repair, retrofit or renewal of their assets. Legislature demands data-driven decisions based on quantitative and reliable bridge condition and performance evaluation. Different technology tools that can provide objective condition evaluations have become available but given the inertia in the practice of bridge engineering and a lack of understanding the challenges to their reliable applications, their use remain limited. Consequently, management decisions are still primarily made without leveraging objective measurement data and without a mechanistic understanding of bridge behavior and performance. To explore the current state-of-the-art in performance and condition evaluation of constructed systems by leveraging technology, a 30-year old highway bridge in New Jersey, exhibiting multiple complex performance deficiencies, was transformed into a field laboratory. To identify the root causes of performance concerns, Visual Inspection, Operational Monitoring, Forced Excitation Testing, Controlled Load Testing, Non-destructive Probes, Long-term Monitoring and Finite Element Modeling and Parameter Identification were conducted within a Structural Identification framework. The results showed that root causes of some performance deficiencies of the test bridge could be identified only through the application of field measurements and analyses integrated by following a scientific approach - such as Structural Identification, especially for deficiencies related to unexpected dynamic amplifications and the long-term effects of vibrations. Controlled Load Testing was especially useful in demonstrating the location and impacts of damage although such an approach can only be considered for the most critical cases due to its high cost and disruption to operations. Operational monitoring was shown as a sufficient and cheaper alternative for structural identification permitting the development of a lesser resolution digital twin of the bridge, which was critical in identifying the root causes of its deficiencies and formulating meaningful interventions.
Book Synopsis Infrastructure Condition Assessment by : Mitsuru Saito
Download or read book Infrastructure Condition Assessment written by Mitsuru Saito and published by . This book was released on 1997 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection contains 58 papers on infrastructure condition assessment presented at a conference sponsored by the Facilities Management Committee of the Urban Transportation Division of ASCE, held in Boston, Massachusetts, August 25-27, 1997.
