System Identification of Bridge and Vehicle Based on Their Coupled Vibration
Author : Lu Deng
Publisher :
Page : pages
File Size : 25,57 MB
Release : 2009
Category :
ISBN :
Highway Vehicle-bridge Coupled Vibrations: Numerical Simulations And Applications
Author : Steve C S Cai
Publisher : World Scientific
Page : 546 pages
File Size : 20,92 MB
Release : 2020-09-23
Category : Technology & Engineering
ISBN : 9811216436
Book Description
Vehicle-bridge interaction happens all the time on roadway bridges and this interaction performance carries much useful information. On one hand, while vehicles are traditionally viewed as loads for bridges, they can also be deemed as sensors for bridges' structural response. On the other hand, while bridges are traditionally viewed as carriers for vehicle weight, they can also be deemed as scales that can weigh the vehicle loads. Based on these observations, a broad area of studies based on the vehicle-bridge interaction have been conducted in the authors' research group. Understanding the vehicle and bridge interaction can help develop strategies for bridge condition assessment, bridge design, and bridge maintenance, as well as develop insight for new research needs.This book documents fundamental knowledge, new developments, and state-of-the-art applications related to vehicle-bridge interactions. It thus provides useful information for graduate students and researchers and therefore straddles the gap between theoretical research and practical applications.
Highway Vehicle-bridge Coupled Vibrations
Author : Chunsheng Cai
Publisher :
Page : 546 pages
File Size : 13,35 MB
Release : 2020
Category : Bridges
ISBN : 9789811216428
Book Description
Vehicle-bridge interaction happens all the time on roadway bridges and this interaction performance carries much useful information. On one hand, while vehicles are traditionally viewed as loads for bridges, they can also be deemed as sensors for bridges'structural response. On the other hand, while bridges are traditionally viewed as carriers for vehicle weight, they can also be deemed as scales that can weigh the vehicle loads. Based on these observations, a broad area of studies based on the vehicle-bridge interaction have been conducted in the authors'research group. Understanding the vehicle and bridge interaction can help develop strategies for bridge condition assessment, bridge design, and bridge maintenance, as well as develop insight for new research needs.This book documents fundamental knowledge, new developments, and state-of-the-art applications related to vehicle-bridge interactions. It thus provides useful information for graduate students and researchers and therefore straddles the gap between theoretical research and practical applications.
Vehicle-bridge Interaction Dynamics
Author : Yeong-Bin Yang
Publisher : World Scientific
Page : 565 pages
File Size : 46,68 MB
Release : 2004
Category : Science
ISBN : 9812388478
Book Description
The commercial operation of the bullet train in 1964 in Japan marked the beginning of a new era for high-speed railways. Because of the huge amount of kinetic energy carried at high speeds, a train may interact significantly with the bridge and even resonate with it under certain circumstances. Equally important is the riding comfort of the train cars, which relates closely to the maneuverability of the train during its passage over the bridge at high speeds.This book is unique in that it is devoted entirely to the interaction between the supporting bridges and moving trains, the so-called vehicle-bridge interaction (VBI). Finite element procedures have been developed to treat interaction problems of various complexities, while the analytical solutions established for some typical problems are helpful for identifying the key parameters involved. Besides, some field tests were conducted to verify the theories established.This book provides an up-to-date coverage of research conducted on various aspects of the VBI problems. Using the series of VBI elements derived, the authors study a number of frontier problems, including the impact response of bridges with elastic bearings, the dynamic response of curved beam to moving centrifugal forces, the stability and derailment of trains moving over bridges shaken by earthquakes, the impact response of two trains crossing on a bridge, the steady-state response of trains moving over elevated bridges, and so on.
Vehicle-Bridge Coupled Vibration
Author : Qingfei Gao
Publisher : Eliva Press
Page : 0 pages
File Size : 24,91 MB
Release : 2023-02-22
Category :
ISBN : 9789994986637
Book Description
When a vehicle is driving on a highway bridge, it causes the bridge to vibrate, thereby affecting the vibration of the vehicle. This interaction and influence represent the coupled vibration between the vehicle and the bridge. From the perspective of dynamics, a car is a multi-degree-of-freedom vibration system composed of a car body, wheels and suspension system. Due to the weight of the vehicle and the unevenness of the bridge deck, the moving vehicle has a dynamic impact on the bridge structure, forcing the bridge to vibrate, which in turn affects the vibration of the vehicle. In this way, the vehicle and the bridge influence each other through the contact between the wheels and the bridge deck, thereby forming a complex multi-degree-of-freedom coupled vibration system. Dynamic performance of different bridges subjected to moving vehicles are conducted in this book, including of simply-supported girder bridges, continuous girder bridges, steel-concrete girder bridges, rigid bridges, concrete-filled steel tube arch bridges, large-span cable-stayed bridges, large-span suspension bridge. Also, dynamic load allowances corresponding to different responses in different positions of highway bridges under moving vehicular loads are deeply discussed. In addition, some key points on design, construction, reparation, and maintenance of highway bridges are detailedly discussed. This book can be used as a teaching book for civil engineering majors and transportation engineering majors, and can also be used as a reference for technical personnel of related majors.
System Identification of Highway Bridges Using Vibration Data
Author : Hugo C. Gomez
Publisher : LAP Lambert Academic Publishing
Page : 268 pages
File Size : 30,34 MB
Release : 2012
Category :
ISBN : 9783659201073
Book Description
This study takes advantage of the instrumentation of three highway bridges located in Southern California. It shows the application of system identification (SI) techniques using more than 2,000 acceleration response data sets collected over a period of nine years. The data consist of ambient and traffic induced vibration records, earthquake records, and controlled vehicles test data. Transducers were mounted on the test vehicle chassis to study the potential for bridge identification using instrumented vehicles. For a five-year period, a reduction of the first natural frequency is found to be approximately 2% for a 3-span straight bridge, 5% for a 3-span highly curved bridge and 3% for a four-span slightly curved bridge. Also, the identified first frequency of one of the bridges decreases up to 20% during an earthquake of moderate intensity (PGA=0.37g) with epicenter close (20km) to the bridge site. State-space models generated from measurements successfully replicate the bridge response. Then, the Young's modulus and boundary stiffness are identified by means of Finite Element (FE) model updating. Finally, fragility curves show bridge seismic vulnerability increases with time.
Highway Vehicle-bridge Coupled Vibrations
Author : 蔡春声
Publisher :
Page : 532 pages
File Size : 24,37 MB
Release : 2020
Category : Bridges
ISBN : 9787040539868
Book Description
Vehicle Scanning Method for Bridges
Author : Yeong-Bin Yang
Publisher : John Wiley & Sons
Page : 372 pages
File Size : 25,44 MB
Release : 2019-10-03
Category : Technology & Engineering
ISBN : 1119539617
Book Description
Presents the first ever guide for vehicle scanning of the dynamic properties of bridges Written by the leading author on the subject of vehicle scanning method (VSM) for bridges, this book allows engineers to monitor every bridge of concern on a regular and routine basis, for the purpose of maintenance and damage detection. It includes a review of the existing literature on the topic and presents the basic concept of extracting bridge frequencies from a moving test vehicle fitted with vibration sensors. How road surface roughness affects the vehicle scanning method is considered and a finite element simulation is conducted to demonstrate how surface roughness affects the vehicle response. Case studies and experimental results are also included. Vehicle Scanning Method for Bridges covers an enhanced technique for extracting higher bridge frequencies. It examines the effect of road roughness on extraction of bridge frequencies, and looks at a dual vehicle technique for suppressing the effect of road roughness. A filtering technique for eliminating the effect of road roughness is also presented. In addition, the book covers the identification of bridge mode shapes, contact-point response for modal identification of bridges, and damage detection of bridges—all through the use of a moving test vehicle. The first book on vehicle scanning of the dynamic properties of bridges Written by the leading author on the subject Includes a state-of-the-art review of the existing works on the vehicle scanning method (VSM) Presents the basic concepts for extracting bridge frequencies from a moving test vehicle fitted with vibration sensors Includes case studies and experimental results The first book to fully cover scanning the dynamic properties of bridges with a vehicle, Vehicle Scanning Method for Bridges is an excellent resource for researchers and engineers working in civil engineering, including bridge engineering and structural health monitoring.
Framework of Damage Detection in Vehicle-Bridge Coupled System
Author : Xuan Kong
Publisher : LAP Lambert Academic Publishing
Page : 260 pages
File Size : 21,35 MB
Release : 2013
Category :
ISBN : 9783659402692
Book Description
Most vibration-based damage identification methods make use of measurements directly from bridge structures with attached sensors. The present study aimed to develop new methodologies to eventually detect bridge damages such as scour using the dynamic response of the vehicle. A framework of damage identification and an optimization method was developed first. Secondly, a new methodology using the transmissibility of vehicle and bridge responses was developed to detect bridge damages. Then, a tractor-trailer test system was designed to obtain reliable response and extract bridge modal properties from the dynamic response of moving vehicles. These developed methodologies were applied to detect scour damage from the response of bridge and/or vehicles. The scour effect on a single pile was studied and methods of scour damage detections were proposed. A monitoring system using fiber optic sensors was designed and tested in the laboratory and is being applied to a field bridge. Finally, the scour effect on the response of the entire bridge and the traveling vehicle was also investigated under the bridge-vehicle-wave interaction, which in turn was used to detect the bridge scour.
System Identification of Highway Bridges Using Long-term Vibration Monitoring Data
Author : Hugo C. Gomez
Publisher :
Page : 241 pages
File Size : 42,6 MB
Release : 2011
Category :
ISBN : 9781267132253
Book Description
The need for maintenance and protection of critical highway infrastructure links has led in recent years to significant developments in the area of bridge structural health monitoring. Taking advantage of the instrumentation of three highway bridges located in Southern California, this dissertation focuses on the application of system identification (SI) techniques to a database consisting of more than 2,000 data sets collected over a period of nine years. The data sets consist of ambient and traffic induced vibration records, earthquake records, and controlled vehicles test data. During the controlled vehicle tests acceleration transducers were mounted on the vehicle chassis to study the potential for bridge identification using instrumented vehicles. It is demonstrated long-term monitoring needs to be conducted in a permanent or periodic basis in combination with the application of SI techniques for the purpose of identifying changes in structural response characteristics and material properties due to aging factors and earthquake intensity. The ambient and traffic-induced vibration data were analyzed using the frequency domain decomposition technique for identification of modal parameters, i.e. natural frequencies and mode shapes. For a five-year period, a reduction of the first natural frequency is found to be approximately 2% for a 3-span straight bridge, 5% for a 3-span highly curved bridge and 3% for a four-span slightly curved bridge. Using seismic acceleration records, the bridge modal parameters are identified using time domain SI techniques. It is found the identified first frequency of one of the bridges decreases up to 20% during an earthquake of moderate intensity (PGA> 0.37g) with epicenter close (
