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A Software Tool For The Analysis Design And Monitoring Of Cable Stayed Bridges
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Book Synopsis A Software Tool for the Analysis, Design and Monitoring of Cable-stayed Bridges by : Pietro Pedrozzi
Download or read book A Software Tool for the Analysis, Design and Monitoring of Cable-stayed Bridges written by Pietro Pedrozzi and published by vdf Hochschulverlag AG. This book was released on 2004 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Load Bearing Behaviour of Composite Beams in Low Degrees of Partial Shear Connection by : Roland Bärtschi
Download or read book Load Bearing Behaviour of Composite Beams in Low Degrees of Partial Shear Connection written by Roland Bärtschi and published by vdf Hochschulverlag AG. This book was released on 2005 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical Modelling of Snow Using Finite Elements by : Martin Stoffel
Download or read book Numerical Modelling of Snow Using Finite Elements written by Martin Stoffel and published by vdf Hochschulverlag AG. This book was released on 2006 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Construction Control of Cable-stayed Bridges by : José Antonio Lozano Galant
Download or read book Construction Control of Cable-stayed Bridges written by José Antonio Lozano Galant and published by . This book was released on 2014 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work presents a study of the simulation of cable-stayed bridges built on temporary supports focused on their response during construction and in service. To simulate the behavior during construction, a set of four different algorithms has been developed to deal with initial design (Backward Algorithm), updating the tensioning process when deviations on site are measured (Forward Algorithm), optimization processes (Direct Algorithm) and time-dependent phenomena effects (Forward-Direct Algorithm). These algorithms were validated by comparing their results with those obtained by two commercial codes. On the other hand, new criteria have been proposed to include the effects of the staggered erection of the superstructure and the time-dependent phenomena effects into the definition of the Objective Service State. To illustrate the application of these methods, a set of academic and actual structures is analyzed. For a more accurate simulation of the actual response of structures on site, a new Structural System Identification (SSI) method (Observability method) is developed. This method is based on the information provided by the monitoring of a static non-destructive test. After validating the results of this method with three alternative methods proposed in the literature, it is applied to complex structures (such as singular buildings and cable-stayed bridges). A parametric analysis is presented to illustrate the role that the uncertainty of each parameter of a real cable-stayed bridge plays in its behavior during construction and in service. Furthermore, modifications of this method to deal with damages, actual boundary conditions, temperature effects, and dynamic excitation tests are presented. The developed SSI method has also lead to the development of a very powerful mathematical tool to deal with polyrational systems of equations. This tool presents a number of applications in many fields of science and engineering (such as transportation, hydraulics or energy power distribution, among many others). To define the minimum measurement set of measurements required for an adequate system identification, a new and innovative graphical tool (observability tree) is developed. To ease the representation of these trees, a set of guidelines is proposed for beam and cable-stayed bridges. To minimize the degrees of freedom to be monitored on site for system identification with actual loads, a new application of the Maxwell's theorem has been proposed. To this end, the utilization of information from alternative load cases, boundary conditions and construction stages is also presented. The results of the proposed methods have led to significant conclusions regarding the response of the cable-stayed bridges built on temporary supports both during construction and in service as well as the importance of their construction control by SSI techniques. From these conclusions, a set of guidelines has been proposed to address the erection of the superstructure, to estimate the appropriate time to define the stay cable forces in service in concrete cable-stay bridges considering time-dependent phenomena effects, to define a measurement set for an adequate SSI and to minimize the points to be monitored.
Book Synopsis State-of-the-art Report on Analysis and Design of Cable Stayed Bridges by : Afshin Eghtedari Shahsavan
Download or read book State-of-the-art Report on Analysis and Design of Cable Stayed Bridges written by Afshin Eghtedari Shahsavan and published by . This book was released on 2015 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Reliability and Safety of Cable-Supported Bridges by : Naiwei Lu
Download or read book Reliability and Safety of Cable-Supported Bridges written by Naiwei Lu and published by CRC Press. This book was released on 2021-06-17 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridge design and construction technologies have experienced remarkable developments in recent decades, and numerous long-span bridges have been built or are under construction all over the world. Cable-supported bridges, including cable-stayed bridges and suspension bridges, are the main type of these long-span bridges, and are widely used in highways crossing gorges, rivers, and gulfs, due to their superior structural mechanical properties and beautiful appearance. However, cable-supported bridges suffer from harsh environmental effects and complex loading conditions, such as heavier traffic loads, strong winds, corrosion effects, and other natural disasters. Therefore, the lifetime safety evaluation of these long-span bridges considering the rigorous service environments is an essential task. Features: Presents a comprehensive explanation of system reliability evaluation for all aspects of cable-supported bridges. Includes a comprehensive presentation of the application of system reliability theory in bridge design, safety control, and operational management. Addresses fatigue reliability, dynamic reliability and seismic reliability assessment of bridges. Presents a complete investigation and case study in each chapter, allowing readers to understand the applicability for real-world scenarios. Reliability and Safety of Cable-Supported Bridges provides a comprehensive application and guidelines for system reliability techniques in cable-supported bridges. Serving as a practical educational resource for both undergraduate and graduate level students, practicing engineers, and researchers, it also intends to provide an intuitive appreciation for probability theory, statistical methods, and reliability analysis methods.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2004 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nonlinear Structural Design Optimization of Cable Stayed Bridges by : Nazim Abdul Nariman
Download or read book Nonlinear Structural Design Optimization of Cable Stayed Bridges written by Nazim Abdul Nariman and published by LAP Lambert Academic Publishing. This book was released on 2014-01 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: ABAQUS Finite Element Analysis software is used to apply computational design optimization process on cable stayed bridge models in relation with shape and topology of the structure. Three styles of stay cables arrangements and three types of pylons are created for structural optimization. The aim is to identify the most efficient design models with a robust, serviceable, safe and stiffness against oscillation and failure due to self weight and external loads
Book Synopsis Vibration Monitoring, Testing, and Instrumentation by : Clarence W. de Silva
Download or read book Vibration Monitoring, Testing, and Instrumentation written by Clarence W. de Silva and published by CRC Press. This book was released on 2007-04-19 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt: Controlling a system's vibrational behavior, whether for reducing harmful vibrations or for enhancing useful types, is critical to ensure safe and economical operation as well as longer structural and equipment lifetimes. A related issue is the effect of vibration on humans and their environment. Achieving control of vibration requires thorough und
Book Synopsis Modelling Strategies for Structural Health Monitoring of Cable-Stayed Bridges by : Jing Zhang
Download or read book Modelling Strategies for Structural Health Monitoring of Cable-Stayed Bridges written by Jing Zhang and published by Open Dissertation Press. This book was released on 2017-01-26 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Modelling Strategies for Structural Health Monitoring of Cable-stayed Bridges" by Jing, Zhang, 张静, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Long-span cable-stayed bridges have gained increasing popularity due to their appealing aesthetics, increased stiffness compared to the suspension bridges, and relatively small size of bridge components. For cable-stayed bridges with steel girders in particular, fatigue has been one of the most important failure modes and the prediction of the remaining fatigue lives has been the primary focus in recent years. To enable the evaluation of fatigue performance, a reasonable baseline finite element model reflecting the real structural behaviour is indispensable. This thesis describes the establishment of baseline finite element models of cable-stayed bridges for fatigue analysis considering the mean stress effect. Ting Kau Bridge in Hong Kong is chosen as a real life example to demonstrate the practical application of the methods developed. Firstly, the initial cable forces of the finite element model of the cable-stayed bridge are calibrated to ensure that the initial geometry of the finite element model under permanent loading agrees with that specified on the as-built drawings within reasonable tolerance. The traditional cable force adjustment method is often a trial-and-error process which is empirical, time-consuming and occasionally difficult in convergence. An optimization method based on the Kriging surrogate model is therefore developed in order to establish the relation between the deck geometry and he initial cable forces of the cable-stayed bridge. The efficiency of the proposed approach is further verified using Ting Kau Bridge against the traditional method. Furthermore, the initial finite element model developed on the basis of engineering blueprints is updated by modifying the uncertain parameters so as to achieve a refined model using the Kriging predictor. An objective function can be formulated in terms of the discrepancy between the theoretical and measured responses captured by the Wind and Structural Health Monitoring System (WASHMS) installed on the bridge. A novel feature of the proposed method is that it enables the simultaneous use of static load testing data and the dynamic information, which is not feasible by using the conventional sensitivity-based approaches. Finally, the fatigue lives of selected critical components of Ting Kau Bridge are worked out with different methods including the deterministic and probabilistic approaches based on the baseline finite element model. In the deterministic approach, the equivalent annual standard fatigue vehicle spectrum is built based on the WASHMS measurements to estimate the damage accumulation and predict fatigue lives. In the probabilistic approach, a probabilistic loading model is proposed to simulate the vehicles running along the bridge by using the available information collected by the weigh-in-motion system. Combined with the traffic load model, a statistical approach is employed to obtain the stress time-histories, and the probability density curve of the fatigue life can be obtained. One significant advantage of the proposed method is that the diurnal variation of traffic flow within different time intervals can be accounted for properly. The results of these approaches are compared with one another. As the mean stress effect is significant in the estimation of fatigue lives, the baseline calibration of cable-stayed bridges is considered essential. DOI: 10.5353/th_b5185957 Subjects: Cab
Book Synopsis Cable-stayed Bridge Condition Evaluations by Data Analysis Methodologies Based on Structural Health Monitoring System by : Jian Chen
Download or read book Cable-stayed Bridge Condition Evaluations by Data Analysis Methodologies Based on Structural Health Monitoring System written by Jian Chen and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In summary, bearing displacements, truck-induced strain peaks, and cable tensions were monitored closely using a variety of proposed methodologies, and each methodology has shown promise in adding to the way in which SHM data can be used for assessing bridge conditions.
Book Synopsis Structural Health Monitoring of Civil Infrastructure Systems by : Vistasp M. Karbhari
Download or read book Structural Health Monitoring of Civil Infrastructure Systems written by Vistasp M. Karbhari and published by Elsevier. This book was released on 2009-08-25 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural health monitoring is an extremely important methodology in evaluating the ‘health’ of a structure by assessing the level of deterioration and remaining service life of civil infrastructure systems. This book reviews key developments in research, technologies and applications in this area of civil engineering. It discusses ways of obtaining and analysing data, sensor technologies and methods of sensing changes in structural performance characteristics. It also discusses data transmission and the application of both individual technologies and entire systems to bridges and buildings. With its distinguished editors and international team of contributors, Structural health monitoring of civil infrastructure systems is a valuable reference for students in civil and structural engineering programs as well as those studying sensors, data analysis and transmission at universities. It will also be an important source for practicing civil engineers and designers, engineers and researchers developing sensors, network systems and methods of data transmission and analysis, policy makers, inspectors and those responsible for the safety and service life of civil infrastructure. Reviews key developments in research, technologies and applications Discusses systems used to obtain and analyse data and sensor technologies Assesses methods of sensing changes in structural performance
Book Synopsis Cable Vibrations in Cable-stayed Bridges by : Elsa de Sá Caetano (autor.)
Download or read book Cable Vibrations in Cable-stayed Bridges written by Elsa de Sá Caetano (autor.) and published by IABSE. This book was released on 2007 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present book provides a comprehensive survey on the governing phenomena of cable vibration, both associated with direct action of wind and rain: buffeting, vortex-shedding, wake effects, rain-wind vibration; and resulting from the indirect excitation through anchorage oscillation: external and parametric excitation. Methodologies for assessment of the effects of those phenomena are presented and illustrated by practical examples. Control of cable vibrations is then discussed and state-of-art results on the design of passive control devices are presented.
Book Synopsis Damage Identification Tools for Cable-stayed Bridges by : Christos Aloupis
Download or read book Damage Identification Tools for Cable-stayed Bridges written by Christos Aloupis and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on the research conducted, these two methods, show potential for capturing, distinguishing, and locating different types of damage on a cable-stayed bridge structure, and have great promise for use as powerful damage identification tools. Due to the similarities of the data needed for each method, it is suggested that they be implemented together, resulting in an even more robust monitoring procedure.
Book Synopsis Structural Health Monitoring 2006 by : Alfredo Güemes
Download or read book Structural Health Monitoring 2006 written by Alfredo Güemes and published by DEStech Publications, Inc. This book was released on 2006 with total page 1458 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings of the Third European Workshop on Structural Health Monitoring held at the Conference Centre in Granada, Spain, in July of 2006 includes four keynote presentations and 170 technical papers written by an international group of contributors. Papers discuss technology and activities related to damage detection and evaluation in engin
Book Synopsis Cable Supported Bridges by : Niels J. Gimsing
Download or read book Cable Supported Bridges written by Niels J. Gimsing and published by John Wiley & Sons. This book was released on 2011-12-30 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fourteen years on from its last edition, Cable Supported Bridges: Concept and Design, Third Edition, has been significantly updated with new material and brand new imagery throughout. Since the appearance of the second edition, the focus on the dynamic response of cable supported bridges has increased, and this development is recognised with two new chapters, covering bridge aerodynamics and other dynamic topics such as pedestrian-induced vibrations and bridge monitoring. This book concentrates on the synthesis of cable supported bridges, suspension as well as cable stayed, covering both design and construction aspects. The emphasis is on the conceptual design phase where the main features of the bridge will be determined. Based on comparative analyses with relatively simple mathematical expressions, the different structural forms are quantified and preliminary optimization demonstrated. This provides a first estimate on dimensions of the main load carrying elements to give in an initial input for mathematical computer models used in the detailed design phase. Key features: Describes evolution and trends within the design and construction of cable supported bridges Describes the response of structures to dynamic actions that have attracted growing attention in recent years Highlights features of the different structural components and their interaction in the entire structural system Presents simple mathematical expressions to give a first estimate on dimensions of the load carrying elements to be used in an initial computer input This comprehensive coverage of the design and construction of cable supported bridges provides an invaluable, tried and tested resource for academics and engineers.
Book Synopsis Vibration and Shock Handbook by : Clarence W. de Silva
Download or read book Vibration and Shock Handbook written by Clarence W. de Silva and published by CRC Press. This book was released on 2005-06-27 with total page 1837 pages. Available in PDF, EPUB and Kindle. Book excerpt: Every so often, a reference book appears that stands apart from all others, destined to become the definitive work in its field. The Vibration and Shock Handbook is just such a reference. From its ambitious scope to its impressive list of contributors, this handbook delivers all of the techniques, tools, instrumentation, and data needed to model, analyze, monitor, modify, and control vibration, shock, noise, and acoustics. Providing convenient, thorough, up-to-date, and authoritative coverage, the editor summarizes important and complex concepts and results into “snapshot” windows to make quick access to this critical information even easier. The Handbook’s nine sections encompass: fundamentals and analytical techniques; computer techniques, tools, and signal analysis; shock and vibration methodologies; instrumentation and testing; vibration suppression, damping, and control; monitoring and diagnosis; seismic vibration and related regulatory issues; system design, application, and control implementation; and acoustics and noise suppression. The book also features an extensive glossary and convenient cross-referencing, plus references at the end of each chapter. Brimming with illustrations, equations, examples, and case studies, the Vibration and Shock Handbook is the most extensive, practical, and comprehensive reference in the field. It is a must-have for anyone, beginner or expert, who is serious about investigating and controlling vibration and acoustics.
