Simulation Of Bridge Weigh In Motion System Integrated With Bridge Safety
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Simulation Of Bridge Weigh In Motion System Integrated With Bridge Safety
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Author : Zhisong Zhao
language : en
Publisher:
Release Date : 2012
Simulation Of Bridge Weigh In Motion System Integrated With Bridge Safety written by Zhisong Zhao and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Bridges categories.
Bridge weigh-in-motion system (B-WIM) testing is a popular technology in bridge applications. The B-WIM system can track extensive information about loading conditions to which bridges are subjected, and engineers can evaluate the responses of bridges and assess their performance relative to the safety index and serviceability. FAD (Free-of-Axle-Detector) or NOR (Nothing-On-Road) B-WIM system works well, but only if the system detects axle locations. In the USA, there are challenges for some beam-and-slab bridges. In the first manuscript, we describe a study with alternative strategies for sensor types and sensor installation locations for beam-and-slab bridges. The sensor layouts are identified and two new sensors are investigated. Most of the commercially available B-WIM systems are based on an algorithm developed by Moses (1979). The performance of this method is acceptable for estimating gross vehicle weight (GVW), but it can be unsatisfactory for estimating single axle loads. In order to improve the accuracy to an acceptable level, two algorithms are proposed. The second and third manuscripts present the measurement of axle weights and GVWs of moving heavy vehicles based on these algorithms. As determined in a case study of a bridge on US-78, both algorithms significantly improved the accuracy of measurements of axle weights in comparison with the commercial B-WIM system. Existing bridges may be functionally obsolete or have deficient structures based on older design codes or features. These bridges are not unsafe for normal vehicle traffic, but they can be vulnerable to specific traffic conditions. We propose, in manuscript 4, use of a simulation model based on B-WIM experimental data derived during extreme events. The results provide an improved understanding of the possible deficiencies of this bridge, and an appropriate retrofit is suggested. Finally, the dynamic amplification factor (DAF) is a significant parameter for design new of bridges and for evaluation of existing bridges. AASHTO guidelines provided very conservative values. So, improved methods for determination of DAF values need to be developed to evaluate the safety of existing bridges. This manuscript presents a simulation method to evaluate the DAF of existing bridges by use of the B-WIM data. The accurate results are obtained based on site-specific data.
Next Generation Wireless Bridge Weigh In Motion Wim System Integrated With Nondestructive Evaluation Nde Capability For Transportation Infrastructure Safety
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Author : Yang Wang (Writer on structural engineering)
language : en
Publisher:
Release Date : 2014
Next Generation Wireless Bridge Weigh In Motion Wim System Integrated With Nondestructive Evaluation Nde Capability For Transportation Infrastructure Safety written by Yang Wang (Writer on structural engineering) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Bridges categories.
Next Generation Wireless Bridge Weigh In Motion Wim System Integrated With Nondestructive Evaluation Nde Capability For Transportation Infrastructure Safety
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Author : Yang Wang (Writer on structural engineering)
language : en
Publisher:
Release Date : 2014
Next Generation Wireless Bridge Weigh In Motion Wim System Integrated With Nondestructive Evaluation Nde Capability For Transportation Infrastructure Safety written by Yang Wang (Writer on structural engineering) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Bridges categories.
Evaluation Of The Bridge Weigh In Motion System
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Author :
language : en
Publisher:
Release Date : 1986
Evaluation Of The Bridge Weigh In Motion System written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Bridges categories.
Experimental And Field Investigation Of A Bridge Weigh In Motion Bwim System Improving The Accuracy Of Bridge Inspection Evaluation And Fatigue Assessment
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Author : Sofia Faraz
language : en
Publisher:
Release Date : 2020
Experimental And Field Investigation Of A Bridge Weigh In Motion Bwim System Improving The Accuracy Of Bridge Inspection Evaluation And Fatigue Assessment written by Sofia Faraz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
Bridges are vital component of a country's transportation system and its economy. However, large number of ageing bridges are either structurally or geometrically deficient in some way. In recent years, the remaining life of ageing bridges, were calculated by detailed evaluation and damage assessment using structural health monitoring (SHM) techniques integrating bridge-weigh-in-motion (BWIM) systems. The field study of an existing BWIM system in Winnipeg, Manitoba was conducted on the Prototype Bridge. This work was extended to analysis and comparison of the algorithms adopted on the Prototype Bridge which provided deep insight in identifying the sources of error in BWIM systems. It was followed by a study on fatigue assessment of steel girder bridges. This research contributes by incorporating field measurements from BWIM system on the Prototype Bridge to estimate fatigue loading and damage assessment. In analytical phase, a simply supported beam subjected to moving and pulsating load was investigated for signal simulation and filtering in MATLAB. This was done as an initial exercise to understand dynamic effects of the load and its relevance to bridge natural frequency. This work was presented in a conference proceeding, attached in appendix. The experimental part of this work aims to identify sources of error in BWIM systems with the aid of the Model Bridge and verify area method, tested on the Prototype Bridge. The method was further investigated on the Model Bridge to obtain 95% confidence interval over real bridge BWIM testing. Model bridge structure was fabricated using polycarbonate. The model was designed to have natural frequencies like the Prototype Bridge. It was instrumented at two different locations with piezoelectric sensors for estimating velocity, transverse position, and class of model truck. It was instrumented with electrical strain gauges at three transverse locations for estimating Gross Vehicle Weight (GVW) of model truck. Video camera was used for verifying velocity profile. Author endeavored to establish relevance of long-term monitoring data obtained from BWIM to bridge evaluation. In this work it was proposed that SHM will add another level of inspection to CHBDC clauses and will improve the estimation of load carrying capacities of existing bridges.
Bridge Weigh In Motion For Bridge Safety And Maintenance
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Author : Hua Zhao
language : en
Publisher:
Release Date : 2010
Bridge Weigh In Motion For Bridge Safety And Maintenance written by Hua Zhao and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Bridges categories.
Bridge Maintenance Safety Management Life Cycle Sustainability And Innovations
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Author : Hiroshi Yokota
language : en
Publisher: CRC Press
Release Date : 2021-04-20
Bridge Maintenance Safety Management Life Cycle Sustainability And Innovations written by Hiroshi Yokota and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-04-20 with Technology & Engineering categories.
Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations contains lectures and papers presented at the Tenth International Conference on Bridge Maintenance, Safety and Management (IABMAS 2020), held in Sapporo, Hokkaido, Japan, April 11–15, 2021. This volume consists of a book of extended abstracts and a USB card containing the full papers of 571 contributions presented at IABMAS 2020, including the T.Y. Lin Lecture, 9 Keynote Lectures, and 561 technical papers from 40 countries. The contributions presented at IABMAS 2020 deal with the state of the art as well as emerging concepts and innovative applications related to the main aspects of maintenance, safety, management, life-cycle sustainability and technological innovations of bridges. Major topics include: advanced bridge design, construction and maintenance approaches, safety, reliability and risk evaluation, life-cycle management, life-cycle sustainability, standardization, analytical models, bridge management systems, service life prediction, maintenance and management strategies, structural health monitoring, non-destructive testing and field testing, safety, resilience, robustness and redundancy, durability enhancement, repair and rehabilitation, fatigue and corrosion, extreme loads, and application of information and computer technology and artificial intelligence for bridges, among others. This volume provides both an up-to-date overview of the field of bridge engineering and significant contributions to the process of making more rational decisions on maintenance, safety, management, life-cycle sustainability and technological innovations of bridges for the purpose of enhancing the welfare of society. The Editors hope that these Proceedings will serve as a valuable reference to all concerned with bridge structure and infrastructure systems, including engineers, researchers, academics and students from all areas of bridge engineering.
Development Of A Bridge Weigh In Motion System
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Author : Arturo Gonzalez
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2010-05
Development Of A Bridge Weigh In Motion System written by Arturo Gonzalez and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-05 with categories.
Weigh-in-Motion (WIM) data can be used to predict future traffic volumes and weights for the planning of new infrastructure, the management of maintenance activities, the identification/reduction of overloading problems and the evaluation of the performance of pavements and bridges. Most WIM systems are based on sensors placed in or on the pavement that measure the wheel force applied over them during a very short time. The value of this force varies as a result of road roughness and vehicle dynamics leading to limited accuracy for estimating static weights. Additionally, these systems experience durability problems due to traffic and environmental conditions. An alternative approach to WIM that addresses these limitations is the use of an instrumented bridge to weigh vehicles (B-WIM). This approach is the subject of research in this book. Inaccuracies derived from discrepancies between theoretical B-WIM algorithms and bridge measurements are investigated both theoretically and experimentally. The text also describes the development of a B-WIM system in Ireland, including all aspects of installation, calibration, data collection and its processing into useful traffic information.
Bridge Safety Maintenance Management Life Cycle Resilience And Sustainability
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Author : Joan Ramon Casas
language : en
Publisher: CRC Press
Release Date : 2022-06-27
Bridge Safety Maintenance Management Life Cycle Resilience And Sustainability written by Joan Ramon Casas and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-06-27 with Technology & Engineering categories.
Bridge Safety, Maintenance, Management, Life-Cycle, Resilience and Sustainability contains lectures and papers presented at the Eleventh International Conference on Bridge Maintenance, Safety and Management (IABMAS 2022, Barcelona, Spain, 11–15 July, 2022). This e-book contains the full papers of 322 contributions presented at IABMAS 2022, including the T.Y. Lin Lecture, 4 Keynote Lectures, and 317 technical papers from 36 countries all around the world. The contributions deal with the state-of-the-art as well as emerging concepts and innovative applications related to the main aspects of safety, maintenance, management, life-cycle, resilience, sustainability and technological innovations of bridges. Major topics include: advanced bridge design, construction and maintenance approaches, safety, reliability and risk evaluation, life-cycle management, life-cycle, resilience, sustainability, standardization, analytical models, bridge management systems, service life prediction, structural health monitoring, non-destructive testing and field testing, robustness and redundancy, durability enhancement, repair and rehabilitation, fatigue and corrosion, extreme loads, needs of bridge owners, whole life costing and investment for the future, financial planning and application of information and computer technology, big data analysis and artificial intelligence for bridges, among others. This volume provides both an up-to-date overview of the field of bridge engineering and significant contributions to the process of making more rational decisions on bridge safety, maintenance, management, life-cycle, resilience and sustainability of bridges for the purpose of enhancing the welfare of society. The volume serves as a valuable reference to all concerned with and/or involved in bridge structure and infrastructure systems, including students, researchers and practitioners from all areas of bridge engineering.
Influence Of Number And Quality Of Weigh In Motion Data On Evaluation Of Load Effects On Bridges
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Author : Aleš Žnidarič
language : en
Publisher:
Release Date : 2017
Influence Of Number And Quality Of Weigh In Motion Data On Evaluation Of Load Effects On Bridges written by Aleš Žnidarič and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
The thesis is dealing with the influence of number and quality of weigh-in-motion (WIM) data to calculate load effects on bridges. Weighing in motion is the only method that provides continuous and unbiased information on traffic loads, but the data contains errors as a result of environmental influences and measurements that can not be constantly monitored. Presented are improvements of bridge WIM technology, which replaces the weighing sensors in the road surface with instrumented bridge superstructures. The system had many advantages, but also shortcomings that prevented its long-term installations. Proposed are a new installation procedure for the sensors that detect axles of the vehicles, a new way of calculating the influence lines, which is based on the responses of crossing vehicles, a method that deals with measurement errors caused by cracks in concrete, and a procedure that takes into account the impact of temperature on the behaviour of bridges. Also shown is the procedure to determine the dynamic loads that the commercial vehicles induce, and their impact on the measurement results. The following chapter elaborates quality control of bridge WIM data. The proposed procedures check and correct typical errors that occur during the measurements, assess quality and reliability of data and significantly shorten the time needed for its verification. Simulation procedures, which are predominantly used for calculating the traffic load effects on bridges, are complex and time intensive. The convolution method, a less demanding procedure appropriate for short to medium-span bridges, was thoroughly investigated. The results were compared with the ones obtained by comprehensive simulations. Convolution method has facilitated the detailed analysis of the impact of quantity and quality of WIM data on calculated moments and shear forces, for simply supported bridges with spans between 5 and 45 meters, which represent the vast majority of all bridges. The size of data samples was varied to investigate its influence on the load effects. Then, various data sources, with respect to quality of data (measured, electronically corrected, visually verified), were examined. The results give clear indications about the required number and quality of WIM data for effective modelling of traffic loads on bridges.