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You searched for subject:(ship bridge collision). Showing records 1 – 3 of 3 total matches.

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University of Florida

1. Getter, Daniel J. Validation and Implementation of Bridge Design Specifications for Barge Impact Loading.

Degree: PhD, Civil Engineering - Civil and Coastal Engineering, 2013, University of Florida

Since 1991 in the United States, the design of highway bridges to resist collisions by errant waterway vessels has been carried out in accordance with design provisions published by AASHTO. These provisions have remained largely unchanged for more than 20 years, while numerous studies in recent years—conducted by researchers at the University of Florida (UF) and the Florida Department of Transportation (FDOT)—have greatly improved upon the analysis procedures in the AASHTO provisions. The focus of the work discussed in this dissertation was to experimentally validate the improved UF/FDOT barge impact load-prediction model and implement numerous other UF/FDOT procedures into a comprehensive risk assessment methodology that can be readily adopted for use in bridge design. To validate the UF/FDOT barge impact load model, a series of impact experiments were planned, in which reduced-scale replicas of atypical barge bow will be impacted by a high-energy impact pendulum to produce large-scale barge deformations.  This dissertation discusses the planning of the experimental study and the design of the various experimental components. In support of the validation effort, a material testing program was carried out in order to characterize the strain rate-sensitive properties of steel materials from which the reduced-scale barge specimens will be fabricated. Steel specimens were tested in uniaxial tension at strain rates covering seven orders of magnitude. To conduct high-rate material tests, a novel test apparatus was designed and employed that used an impact pendulum to impart the required energy. Data from the material testing program were used to develop constitutive models that were used in finite element barge impact simulations. Additionally in this study, a revised vessel collision risk assessment methodology was developed that incorporates various new UF/FDOT analysis procedures. The complete methodology was demonstrated for two real-world bridge cases, and the results were compared to the existing AASHTO risk assessment method. For these two cases, the revised procedure was found to predict higher levels of risk than the AASHTO procedure. However,retrofit and alternative design solutions were presented that demonstrate that,with careful design choices, the revised procedure can result in safer and more economical bridge designs. ( en ) Advisors/Committee Members: Consolazio, Gary R (committee chair), Hamilton, Homer Robert, Iii (committee member), Cook, Ronald Alan (committee member), Mcvay, Michael C (committee member), Chen, Youping (committee member).

Subjects/Keywords: Barges; Bridge members; Bridge piers; Impact loads; Modeling; Piers; Risk analysis; Ship bridges; Simulations; Strain rate; barge  – bridge  – collision  – constiutive  – design  – impact  – modeling  – risk  – vessel; City of Gainesville ( local )

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APA (6th Edition):

Getter, D. J. (2013). Validation and Implementation of Bridge Design Specifications for Barge Impact Loading. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0045792

Chicago Manual of Style (16th Edition):

Getter, Daniel J. “Validation and Implementation of Bridge Design Specifications for Barge Impact Loading.” 2013. Doctoral Dissertation, University of Florida. Accessed January 24, 2021. https://ufdc.ufl.edu/UFE0045792.

MLA Handbook (7th Edition):

Getter, Daniel J. “Validation and Implementation of Bridge Design Specifications for Barge Impact Loading.” 2013. Web. 24 Jan 2021.

Vancouver:

Getter DJ. Validation and Implementation of Bridge Design Specifications for Barge Impact Loading. [Internet] [Doctoral dissertation]. University of Florida; 2013. [cited 2021 Jan 24]. Available from: https://ufdc.ufl.edu/UFE0045792.

Council of Science Editors:

Getter DJ. Validation and Implementation of Bridge Design Specifications for Barge Impact Loading. [Doctoral Dissertation]. University of Florida; 2013. Available from: https://ufdc.ufl.edu/UFE0045792


Delft University of Technology

2. Brzesowsky, A.S. (author). Feasibility study of protection systems for bridge Piers at Deepwater.

Degree: 1988, Delft University of Technology

Protection systems against ship collision are studied in the first report for this thesis. Based on this initial study a number of 10 protection systems for bridge piers at deepwater (>100 m) are developed. As an example a proposed bridge pier for a bridge over the Strait of Gibraltar with a foundation depth of 300 m is chosen. The major problems are to absorb the enormous amount of energy of vessels up to 400.000 dwt which passes the Strait and the foundation depth of 300 m. Based on these conditions a few protection structures against ship collision are proposed. By using a selection matrix one of these is chosen for further study.

Hydraulic Engineering

Civil Engineering and Geosciences

Advisors/Committee Members: Glerum, A. (mentor), Bourguignon, G.P. (mentor).

Subjects/Keywords: ship collision; protection systems; bridge piers; deepwater

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Brzesowsky, A. S. (. (1988). Feasibility study of protection systems for bridge Piers at Deepwater. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:efa07995-4279-4d5b-97d6-ca15d75d9bbd

Chicago Manual of Style (16th Edition):

Brzesowsky, A S (author). “Feasibility study of protection systems for bridge Piers at Deepwater.” 1988. Masters Thesis, Delft University of Technology. Accessed January 24, 2021. http://resolver.tudelft.nl/uuid:efa07995-4279-4d5b-97d6-ca15d75d9bbd.

MLA Handbook (7th Edition):

Brzesowsky, A S (author). “Feasibility study of protection systems for bridge Piers at Deepwater.” 1988. Web. 24 Jan 2021.

Vancouver:

Brzesowsky AS(. Feasibility study of protection systems for bridge Piers at Deepwater. [Internet] [Masters thesis]. Delft University of Technology; 1988. [cited 2021 Jan 24]. Available from: http://resolver.tudelft.nl/uuid:efa07995-4279-4d5b-97d6-ca15d75d9bbd.

Council of Science Editors:

Brzesowsky AS(. Feasibility study of protection systems for bridge Piers at Deepwater. [Masters Thesis]. Delft University of Technology; 1988. Available from: http://resolver.tudelft.nl/uuid:efa07995-4279-4d5b-97d6-ca15d75d9bbd


University of Southern California

3. Yun, Hae-Bum. Analytical and experimental studies of modeling and monitoring uncertain nonlinear systems.

Degree: PhD, Civil Engineering (Structural Mechanics), 2007, University of Southern California

The development of effective structural health monitoring (SHM) methodologies is imperative for the efficient maintenance of important structures in aerospace, mechanical and civil engineering. Based on reliable condition assessment, the owners of monitored structures can expect two important benefits: to avoid catastrophic accidents by detecting various types of structural deterioration during operation, and to establish efficient maintenance means and time schedule to reduce maintenance costs.; A vibration-based SHM methodology is evaluated for change detection in nonlinear systems that can be frequently seen in many engineering fields. The proposed methodology is advantageous over existing SHM methodologies regarding the following aspects: feasible to detect small changes in complex nonlinear systems, possible to make physical interpretation of detected changes, and possible to quantify the uncertainty associated with the change detection.; A series of analytical and experimental studies was performed to investigate various important issues in modeling and monitoring of uncertain nonlinear systems. Different parametric and non-parametric identification methods were compared for monitoring purpose using full-scale nonlinear viscous dampers for seismic mitigation in civil structures. Then, the effects of uncertainty on change detection performance were investigated. Two types of uncertainty were studied: measurement uncertainty and system characteristic uncertainty. For measurement uncertainty, three different types of full-scale nonlinear viscous dampers were used to validate the proposed SHM methodology when the dampers' response was polluted with random noise. For system characteristic uncertainty, a semi-active magneto-rheological damper whose system characteristics were determined through user controllable input current was used. Statistical pattern recognition methods were studied to detect relatively small changes in nonlinear systems with different uncertainty types. The Bootstrap method, a statistical data resampling technique, was also studied to estimate the uncertainty bounds of change detection when the measurement data are insufficient for reliable statistical inference.; A web-based real-time bridge monitoring system was developed and used for a forensic study involving a cargo ship collision with the Vincent Thomas Bridge, a critical suspension bridge in the metropolitan Los Angeles region. Advisors/Committee Members: Sami F. Masri (Committee Chair), Carter Wellford (Committee Member), Jiin-Jen Lee (Committee Member), John P. Caffrey (Committee Member), Roger G. Ghanem (Committee Member).

Subjects/Keywords: structural health monitoring; system identification; Restoring Force Method; artificial neural networks; Hypothesis Test; Bootstrap Method; statistical pattern recognition; support vector machines; k-means clustering; error analysis; detection theory; Natural Excitation Technique; Eigensystem Realization Algorithm; full-scale viscous dampers; magneto-rheological dampers; suspension bridge; web-based real-time bridge monitoring system; ship-bridge collision

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Yun, H. (2007). Analytical and experimental studies of modeling and monitoring uncertain nonlinear systems. (Doctoral Dissertation). University of Southern California. Retrieved from http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/528810/rec/819

Chicago Manual of Style (16th Edition):

Yun, Hae-Bum. “Analytical and experimental studies of modeling and monitoring uncertain nonlinear systems.” 2007. Doctoral Dissertation, University of Southern California. Accessed January 24, 2021. http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/528810/rec/819.

MLA Handbook (7th Edition):

Yun, Hae-Bum. “Analytical and experimental studies of modeling and monitoring uncertain nonlinear systems.” 2007. Web. 24 Jan 2021.

Vancouver:

Yun H. Analytical and experimental studies of modeling and monitoring uncertain nonlinear systems. [Internet] [Doctoral dissertation]. University of Southern California; 2007. [cited 2021 Jan 24]. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/528810/rec/819.

Council of Science Editors:

Yun H. Analytical and experimental studies of modeling and monitoring uncertain nonlinear systems. [Doctoral Dissertation]. University of Southern California; 2007. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/528810/rec/819

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