Experimental And Analytical Studies Of Steel Connections And Energy Dissipators
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Theoretical And Experimental Analysis Of Dissipative Beam To Column Joints In Moment Resisting Steel Frames
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Author : Massimo Latour
language : en
Publisher: Universal-Publishers
Release Date : 2011-07-11
Theoretical And Experimental Analysis Of Dissipative Beam To Column Joints In Moment Resisting Steel Frames written by Massimo Latour and has been published by Universal-Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-07-11 with categories.
Before the seismic events of Northridge (Los Angeles, 17 January 1994) and Hyogoken-Nanbu (Kobe, 17 January 1995), MRFs were supposed to be the most reliable seismic resistant systems due to the high number of dissipative zones that are able to develop. Before these earthquakes, especially in the United States, MRFs were realized, generally, by adopting fully welded connections, which, at the time, were retained to perform better compared to other joint typologies. In addition, the economic advantages deriving from the adoption of field fully welded connections strongly influenced choices of building owners and, as a result, led to the adoption of this joint typology in almost all pre-Northridge steel MRFs. After the Northridge earthquake, even though the loss of life was limited, the unexpected amount of damages occurred in structures adopting as seismic resistant system welded Moment Resisting Frames put into question the role played by welded connections on the whole of structural behavior. Therefore, after the seismic events, two strategies were identified to improve the behavior of fully welded connections. The first one is related to the improvement of the welding technique, usually strengthening the critical area subjected to fracture. The second one is based on the possibility of concentrating the energy dissipation in the beam, reducing the bending resistant area of beams by properly cutting the flanges in a zone close to beam-to-column connection. This weakening approach is commonly called RBS. A new design approach, which has been the subject of many studies in the last few decades, has gained growing interest in recent years. In fact, Eurocode 8 has opened the door to the idea of dissipating the seismic input energy in the connecting elements of beam-to-column joints. In this work, attention is focused on this last approach. The first part of the work is descriptive and deals with the historical development and, in general, with the seismic behavior of Moment Resisting Frames. In the same chapter, general concepts concerning the component method, as introduced by last version of Eurocode 3, are given. Finally, the influence of the joint behaviour on main characteristics of partial strength and/or semi-rigid MRFs is evaluated by properly accounting for existing literature. The third chapter deals with an experimental analysis on the cyclic behaviour of classical partial strength beam-to-column joints. The main scope of the experimental campaign is to show how to control the dissipative behaviour of joints by properly designing the weakest joint component and by over-strengthening the other connecting elements. A design procedure is pointed out and the comparison among the results obtained by cyclic tests is presented in terms of energy dissipation capacity. In addition, by monitoring during the experimental tests both the whole joint and the single joint components it is shown that the energy dissipated by the joint is equal to the sum of the energy dissipated by the joint components. This result assures that the first phase of the component approach, i.e. the component identification, is properly carried out and that interaction between components under cyclic loads is negligible. Chapter 4 represents the extension of the work carried out in the previous chapter. In fact, on the base of the obtained results, the goal is to provide a mechanical cyclic model for the prediction of the overall joint behaviour, starting from existing literature models. Hence, a state-of-the-art review is first presented and then, a model employed to set up a computer program devoted to the prediction of the cyclic behaviour of steel beam-to-column joints is defined. In particular, the proposed cyclic model adopts Kim & Engelhardt's approach to model the shear panel behavior, Cofie & Krawinkler's model to predict Panels in Tension and Compression cyclic behavior, and Piluso et al.'s model for the prediction of the T-stub modelling
Tubular Structures Xii
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Author : Z.Y. Shen
language : en
Publisher: CRC Press
Release Date : 2008-09-11
Tubular Structures Xii written by Z.Y. Shen and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-09-11 with Technology & Engineering categories.
Presentation of the latest scientific and engineering developments in the field of tubular steel structures. Covers key and emerging subjects of hollow structural sections, such as: static and fatigue behaviour of connections/joints, concrete filled hollow sections and composite tubular members, offshore structures, earthquake resistance,
Experimental And Analytical Studies On The Seismic Behavior Of Lightweight Concrete Panels With Friction Energy Dissipators
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Author : Mehrdad Sasani
language : en
Publisher:
Release Date : 1997
Experimental And Analytical Studies On The Seismic Behavior Of Lightweight Concrete Panels With Friction Energy Dissipators written by Mehrdad Sasani and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Bolted joints categories.
Nehrp Commentary On The Gidelines For The Seismic Rehabilitation Of Buildings
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Author : Eugene Zeller
language : en
Publisher: DIANE Publishing
Release Date : 2000-06
Nehrp Commentary On The Gidelines For The Seismic Rehabilitation Of Buildings written by Eugene Zeller and has been published by DIANE Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-06 with Technology & Engineering categories.
This document from the National Earthquake Hazards Reduction Program (NEHRP) was prepared for the Building Seismic Safety Council (BSSC) with funding from the Federal Emergency Management Agency (FEMA). It provides commentary on the NEHRP Guidelines for the Seismic Rehabilitation of Buildings. It contains systematic guidance enabling design professionals to formulate effective & reliable rehabilitation approaches that will limit the expected earthquake damage to a specified range for a specified level of ground shaking. This kind of guidance applicable to all types of existing buildings & in all parts of the country has never existed before. Illustrated.
Experimental And Analytical Studies Of Base Isolation Applications For Low Cost Housing
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Author : Wendy Taniwangsa
language : en
Publisher:
Release Date : 1996
Experimental And Analytical Studies Of Base Isolation Applications For Low Cost Housing written by Wendy Taniwangsa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Dwellings categories.
Mechanics Of Structures And Materials
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Author : M.A. Bradford
language : en
Publisher: CRC Press
Release Date : 1999-01-01
Mechanics Of Structures And Materials written by M.A. Bradford and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-01-01 with Technology & Engineering categories.
Structural mechanics in Australasia is the focus of the some 100 papers, but among them are also contributions from North America, Japan, Britain, Asia, and southeast Asia.
Field Testing Of Bridge Design And Retrofit Concepts
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Author :
language : en
Publisher:
Release Date : 1995
Field Testing Of Bridge Design And Retrofit Concepts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Bridges categories.
Pt. 1: The opportunity for the field testing of an isolated viaduct arose out of the demolition and reconstruction of the I-680/R-24 interchange in Walnut Creek, California. The southern section of the temporary separator bridge is seismically isolated, and this portion was the subject of a three-phase field study. This viaduct is the first new bridge in California to be seismically isolated. The primary objective of this investigation was to collect field data for the determination of the dynamic properties (mode shapes, modal frequencies, and damping ratios) of the viaduct, to assess the contribution of different structural components to the overall flexibility and damping characteristics of the structure, and to conduct analytical studies to verify the experimentally computed dynamic properties.
Behaviour Of Steel Structures In Seismic Areas
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Author : Federico Mazzolani
language : en
Publisher: CRC Press
Release Date : 2009-12-03
Behaviour Of Steel Structures In Seismic Areas written by Federico Mazzolani and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-12-03 with Technology & Engineering categories.
Behaviour of Steel Structures in Seismic Areas comprises the latest progress in both theoretical and experimental research on the behaviour of steel structures in seismic areas. The book presents the most recent trends in the field of steel structures in seismic areas, with particular reference to the utilisation of multi-level performance bas
Directory Of Northridge Earthquake Research
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Author : Brian Cowan
language : en
Publisher: DIANE Publishing
Release Date : 2000-07
Directory Of Northridge Earthquake Research written by Brian Cowan and has been published by DIANE Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-07 with categories.
This invitation conference, held Dec. 2 and 3, 1994, included earth scientists, engineers, social scientists, agency program managers, and practitioners and others who implement earthquake research. Chapters include: NSF-funded Northridge Earthquake researchers; summary of USGS Northridge supplementary funding; NIST Northridge research; FEMA Northridge research; organizational research programs: Calif. Div. of Mines and Geology, Calif. Seismic Safety Comm., EERI, NCEER, NHRAIC, Rand Critical Technologies Inst., and SAC Joint Venture; Info. Services: EERC-NISEE, NCEER Info. Services, and OES DFO; and individuals' research projects.
Experimental And Analytical Studies Of Steel Connections And Energy Dissipators
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Author : Tzong-Shuoh Yang
language : en
Publisher:
Release Date : 1995
Experimental And Analytical Studies Of Steel Connections And Energy Dissipators written by Tzong-Shuoh Yang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Bolted joints categories.