Performance Evaluation of Bridge Approaches
Author | : |
Publisher | : |
Total Pages | : 68 |
Release | : 1983 |
Genre | : Bridge approaches |
ISBN | : |
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Author | : |
Publisher | : |
Total Pages | : 68 |
Release | : 1983 |
Genre | : Bridge approaches |
ISBN | : |
Author | : Ali Shafikhani |
Publisher | : |
Total Pages | : 173 |
Release | : 2020 |
Genre | : Bridges |
ISBN | : |
High plastic expansive clays when subjected to different climatic conditions undergo large ground movements causing distress to infrastructures including bridges, pavements,buildings, retaining structures, and others. Performance assessment of these structures built on problematic soils such as expansive clays is important to reduce maintenance and extending the design life of infrastructure. Rapid developments in remote sensing technologies with precise evaluation have influenced the monitoring techniques for assessing the health condition of civil infrastructure projects. While these technologies have considerably aided in performance evaluation, cogent procedures for evaluating the ground movements are still required that integrates technologies, climatic factors, soil behavior models. This research study presents an integrated approach using the Three-Dimensional Terrestrial Laser Scanning (3D-TLS)technique and advanced mathematical modeling (system identification approach) for assessing the performance of the bridge infrastructure including highway embankment, bridge deck,bridge approach slab, bridge abutments, and columns. First, an optimized framework is developed to evaluate ground movements using 3D-TLS technique, which is an active-remote sensing Light Detection and Ranging (LiDAR) remote sensing technology that uses near infrared light to monitor physical characteristics of earth's surface. The ground movements from the processed scans, and climatic factor parameters including temperature and precipitation variations were used to develop advanced mathematical models of dynamic systems using collected time-series data. The validation of the developed integrated framework is illustrated on a test site built on high plastic expansive clay soils located in North Texas. Cost-Benefit Analysis (COA) is performed to compare 3D-TLS remote sensing and prevalent monitoring approaches. This research highlights the integration of latest technological developments with advanced mathematical models to predict the condition of a bridge infrastructure.
Author | : Sam Helwany |
Publisher | : |
Total Pages | : 306 |
Release | : 2007 |
Genre | : Bridge approaches |
ISBN | : |
Author | : Ronaldo Luna |
Publisher | : |
Total Pages | : 212 |
Release | : 2003 |
Genre | : Bridge approaches |
ISBN | : |
The design changes in the 1990s to bridge approaches resulted in approach slabs of about 8m in length supported at one end on the bridge abutment and at the other by a sleeper beam resting on the embankment. These slabs have not performed adequately due primarily to excessive deformation of the foundation and fill soils under the slab and sleeper beam. Survey questionnaires were administered for resident engineers in MoDOT and neighboring states to assess overall performance. Two bridge sites were selected for more detailed study of the deformation mechanisms. Analyses involving modeling using a finite element method program were conducted using soil properties obtained from drilling, sampling and laboratory testing at the study sites. Conclusions and recommendations are in the following categories: initiating programmatic instrumentation and monitoring plans for approach embankments; enhanced drilling, sampling and analysis at locations of future embankments; geosynthetic reinforcement of the embankment; staged construction; separating grading and paving contract; abutment and drainage details; and improved compaction specifications.
Author | : Airong Chen |
Publisher | : Routledge |
Total Pages | : 124 |
Release | : 2018-12-07 |
Genre | : Technology & Engineering |
ISBN | : 1351208780 |
Bridges play important role in modern infrastructural system. This book provides an up-to-date overview of the field of bridge engineering, as well as the recent significant contributions to the process of making rational decisions in bridge design, assessment and monitoring and resources optimization deployment for the purpose of enhancing the welfare of society. Tang specifies the purposes and requirements of the conceptual bridge design, considering bridge types, basic elements, structural systems and load conditions. Cremona and Poulin propose an assessment procedure for existing bridges. Kallias et al. develop a framework for the performance assessment of metallic bridges under atmospheric exposure by integrating coating deterioration and corrosion modelling. Soriano et al. employ a simplified approach to estimate the maximum traffic load effect on a highway bridge and compare the results with other approaches based on on-site weigh-in-motion data. Akiyama et al. propose a method for reliability-based durability design and service life assessment of reinforced concrete deck slab of jetty structures. Chen et al. propose a meso-scale model to simulate the uniform and pitting corrosion of rebar in concrete and to obtain the crack patterns of the concrete with different rebar arrangements. Ruan et al. present a traffic load model for long span multi-pylon cable- stayed bridges. Khuc and Catbas implement a non-target vision- based method for the measurement of both static and dynamic displacements time histories. Finally, Cruz presents the career of the outstanding bridge engineer Edgar Cardoso in the fields of bridge design and experimental analysis. The book serves as a valuable reference to all concerned with bridge structure and infrastructure systems, including students, researchers, engineers, consultants and contractors from all areas sections of bridge engineering. The chapters originally published as a special issue in Structure and Infrastructure Engineering.
Author | : Stanley Y. T. Chen |
Publisher | : |
Total Pages | : 114 |
Release | : 2010 |
Genre | : Bridge approaches |
ISBN | : |
Author | : William Edward Wolfe |
Publisher | : |
Total Pages | : 100 |
Release | : 2003 |
Genre | : Bridges |
ISBN | : |
Author | : Peter Sajer |
Publisher | : |
Total Pages | : 376 |
Release | : 1990 |
Genre | : Bridges |
ISBN | : |
Author | : Harvey E. Wahls |
Publisher | : Transportation Research Board |
Total Pages | : 56 |
Release | : 1990 |
Genre | : Technology & Engineering |
ISBN | : 9780309049054 |
Includes case histories of the Dumbarton Bridge (San Francisco Bay, Calif.), the Rainier Avenue Embankment (Seattle, Wash.) and the Gallows Road Grade Separation (Fairfax, Va.)
Author | : Katherine Siggerud |
Publisher | : DIANE Publishing |
Total Pages | : 58 |
Release | : 2009-02 |
Genre | : Technology & Engineering |
ISBN | : 143790971X |
The Aug. 1, 2007, collapse of a Minnesota bridge raised nationwide questions about bridge safety and the Dept. of Transportation¿s ability to prioritize resources for bridges. The Highway Bridge Program (HBP), the primary source of fed. funding for bridges, provided over $4 billion to states in FY 2007. This study examines: (1) how the HBP addresses bridge conditions; (2) how states use HBP funds and select bridge projects for funding; (3) what data indicates about bridge conditions and the HBP¿s impact; and (4) the extent to which the HBP aligns with generally accepted principles, and fed. laws and regulations, for re-examining surface transportation programs. Includes recommendations. Charts and tables.