Natural Frequencies of Concrete Bridges in the Pacific Northwest
Title | Natural Frequencies of Concrete Bridges in the Pacific Northwest PDF eBook |
Author | Ralph A. Dusseau |
Publisher | |
Pages | 18 |
Release | 1986* |
Genre | Bridges |
ISBN |
Vehicle Scanning Method for Bridges
Title | Vehicle Scanning Method for Bridges PDF eBook |
Author | Yeong-Bin Yang |
Publisher | John Wiley & Sons |
Pages | 282 |
Release | 2019-11-25 |
Genre | Technology & Engineering |
ISBN | 1119539587 |
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.
Asphalt Cement and Asphalt/polymer Blends
Title | Asphalt Cement and Asphalt/polymer Blends PDF eBook |
Author | National Research Council (U.S.). Transportation Research Board |
Publisher | |
Pages | 1174 |
Release | 1993 |
Genre | Asphalt |
ISBN |
Structures
Title | Structures PDF eBook |
Author | National Research Council (U.S.). Transportation Research Board |
Publisher | Transportation Research Board National Research |
Pages | 214 |
Release | 1993 |
Genre | Bridges |
ISBN |
Structural Analysis and Design
Title | Structural Analysis and Design PDF eBook |
Author | |
Publisher | |
Pages | 262 |
Release | 1998 |
Genre | Bridges |
ISBN |
Construction Loads and Vibrations
Title | Construction Loads and Vibrations PDF eBook |
Author | Mohsen A. Issa |
Publisher | |
Pages | 278 |
Release | 1998 |
Genre | Bridges |
ISBN |
The objective and scope of this research was to investigate the effects of construction loads and vibrations on typical newly poured reinforced concrete bridge decks. A compendium was developed that takes into consideration all the factors influencing the effects of construction loads and vibrations on the performance of reinforced concrete bridge decks, in particular, the structural cracking of the concrete. The parameters considered for the evaluation stages were age of concrete, stage and sequence of pours, curing procedures, heat of hydration, strength gain, thermal changes, type of construction, adjacent traffic, adjacent pile driving, and construction equipment. The identification process consisted of a comprehensive literature review and questionnaire survey. Due to the complexity of the subject, limited and often conflicting information was identified. An experimental program was conducted to determine the modulus of elasticity of concrete as well as the maximum curvatures that fresh concrete can withstand. A computer program was developed to identify the best possible pouring sequence for continuous span bridges. Two bridges for which the plans and other relevant information were made available by the Illinois Department of Transportation were modeled for construction loads and vibrations. The time history and dynamic analysis indicated that the sequence of pour has a significant effect on the deformation of the concrete at early ages. The mode shapes obtained by the finite element analysis were used to optimize sensor locations for the dynamic field testing. Locations at the supports and along the two exterior girders of both bridges were selected for instrumentation based on the dynamic analysis results.
1997 TRB Distinguished Lecture
Title | 1997 TRB Distinguished Lecture PDF eBook |
Author | John W. Fisher |
Publisher | |
Pages | 250 |
Release | 1997 |
Genre | Bridges |
ISBN |