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Experimental Investigation Of The Structural Fuse Concept
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Book Synopsis Analytical and Experimental Investigation of the Structural Fuse Concept by :
Download or read book Analytical and Experimental Investigation of the Structural Fuse Concept written by and published by . This book was released on 2006 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt: Passive energy dissipation (PED) devices are useful to enhance structural performance by reducing seismically induced structural damage. Metallic dampers are one such PED. When they are designed such that all damage is concentrated on the PED devices, allowing the primary structure to remain elastic, they can be defined as structural fuses (SF). A comprehensive parametric study was conducted to investigate the SF concept, and to identify combinations of key parameters essential to ensure adequate seismic performance for SF systems. Non-linear time history analyses were conducted for several combinations of parameters, chosen to cover a range of feasible designs. Viable combinations of parameters are identified and used to provide guidelines to design and retrofit systems using Buckling-restrained Braces (BRBs), Triangular Added Damping and Stiffness (T-ADAS), and Shear Panels (SP) as examples of metallic dampers working as structural fuses. Studies focus on the application of the structural fuse concept to single-degree-of-freedom (SDOF) and multi-degree-of-freedom (MDOF) systems. As part of this research, floor demands velocities and accelerations are also investigated, with the objective of assessing the applicability of the structural fuse concept to protect nonstructural components. As a proof of concept to the developed design procedure, an experimental project was conducted on the shaking table at University at Buffalo, which consists of a three-story frame designed with BRBs. Two types of BRBs with different types of connections were used in this test: BRBs with moment-resisting connections, and BRBs with pin connections, manufactured by Nippon Steel Corporation (Japan) and Star Seismic (USA), respectively. This experimental project also assesses the replaceability of BRBs designed as sacrificeable and easy-to-repair members. These BRBs are connected to the frame by removable and eccentric gusset-plate, especially designed to prevent performance problems observed in other experimental research. Design and behavior of this type of connection is also investigated here. Another objective of this test is to examine the use of seismic isolation devices to protect nonstructural components from severe floor vibrations in buildings designed per the structural fuse concept. The seismic isolation device consists of a bearing with a spherical ball rolling in conical steel plates, a.k.a. Ball-in-Cone (BNC) system. (Abstract shortened by UMI.).
Book Synopsis Experimental Investigation of the Structural Fuse Concept by : Ramiro E. Vargas
Download or read book Experimental Investigation of the Structural Fuse Concept written by Ramiro E. Vargas and published by . This book was released on 2006 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analytical Investigation of the Structural Fuse Concept by : Ramiro E. Vargas
Download or read book Analytical Investigation of the Structural Fuse Concept written by Ramiro E. Vargas and published by . This book was released on 2006 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analytical Development and Experimental Validation of a Structural-fuse Bridge Pier Concept by : Samer El-Bahey
Download or read book Analytical Development and Experimental Validation of a Structural-fuse Bridge Pier Concept written by Samer El-Bahey and published by . This book was released on 2010 with total page 447 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This report describes an experimental and analytical study of a structural concept where structural steel elements are added to a bridge bent to increase its strength and stiffness. The structural fuse is designed to sustain the seismic demand and dissipate energy through hysteretic behavior of the fuses while keeping the gravity-resisting structural elements of the bridge bent elastic. A parametric study is first carried out to investigate the effect of adding structural fuses to a RC bridge bent. Second, an experimental program for two large-scale twin-column segmental bridge bent specimens in an accelerated bridge construction application is developed to investigate the impact of the fuses on the behavior of the bridge system. The experimental work is followed by an analytical study to replicate the experimental results and to assess the adequacy of the design recommendations. Two types of structural fuses are used in this research: Buckling Restrained Braces (BRBs) for short length applications, and Steel Plate Shear LInks (SPSLs) that are designed and detailed to dissipate energy through shear yielding. BOth types of fuses resulted in increased stiffness and strength of the test system"--Pages iii-iv.
Book Synopsis Analytical and Experimental Investigation of a Controlled Rocking Approach for Seismic Protection of Bridge Steel Truss Piers by : Michael Pollino
Download or read book Analytical and Experimental Investigation of a Controlled Rocking Approach for Seismic Protection of Bridge Steel Truss Piers written by Michael Pollino and published by . This book was released on 2008 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Investigation of Blast Performance of Seismically Resistant Concrete-filled Steel Tube Bridge Piers by : Shuichi Fujikura
Download or read book Experimental Investigation of Blast Performance of Seismically Resistant Concrete-filled Steel Tube Bridge Piers written by Shuichi Fujikura and published by . This book was released on 2007 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Report written by and published by . This book was released on 2009 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the Fourth PRC-US Workshop on Seismic Analysis and Design of Special Bridges by :
Download or read book Proceedings of the Fourth PRC-US Workshop on Seismic Analysis and Design of Special Bridges written by and published by . This book was released on 2006 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis New Experimental Capabilities and Loading Protocols for Seismic Qualification and Fragility Assessment of Nonstructural Systems by :
Download or read book New Experimental Capabilities and Loading Protocols for Seismic Qualification and Fragility Assessment of Nonstructural Systems written by and published by . This book was released on 2008 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance Assessment of Conventional and Base-isolated Nuclear Power Plants for Earthquake and Blast Loadings by : Yin-Nan Huang
Download or read book Performance Assessment of Conventional and Base-isolated Nuclear Power Plants for Earthquake and Blast Loadings written by Yin-Nan Huang and published by . This book was released on 2008 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Statistical and Mechanistic Fragility Analysis of Concrete Bridges by : Masanobu Shinozuka
Download or read book Statistical and Mechanistic Fragility Analysis of Concrete Bridges written by Masanobu Shinozuka and published by . This book was released on 2007 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis User Manual and Technical Documentation for the REDARS (TM) Import Wizard by :
Download or read book User Manual and Technical Documentation for the REDARS (TM) Import Wizard written by and published by . This book was released on 2006 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Evaluation of the Seismic Performance of Hospital Piping Subassemblies by : Elliott Richard Goodwin
Download or read book Experimental Evaluation of the Seismic Performance of Hospital Piping Subassemblies written by Elliott Richard Goodwin and published by . This book was released on 2007 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Seismic Evaluation and Rehabilitation of Critical Components of Electrical Power Systems by :
Download or read book Seismic Evaluation and Rehabilitation of Critical Components of Electrical Power Systems written by and published by . This book was released on 2008 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cyclic Response and Low Cycle Fatigue Characteristics of Plate Steels by : Peter Dusicka
Download or read book Cyclic Response and Low Cycle Fatigue Characteristics of Plate Steels written by Peter Dusicka and published by . This book was released on 2006 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Structural and Nonstructural Earthquake Design by : William J. Petak
Download or read book Structural and Nonstructural Earthquake Design written by William J. Petak and published by . This book was released on 2008 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Three-dimensional Modeling of Inelastic Buckling in Frame Structures by : Macarena Schachter
Download or read book Three-dimensional Modeling of Inelastic Buckling in Frame Structures written by Macarena Schachter and published by . This book was released on 2007 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inelastic buckling is the most important failure mode of a steel beam column element subjected to compression force. In order to correctly predict this phenomenon, large rotations, large displacements and the plasticity of the section along the element must be considered. Several formulations have been proposed to model problems with three dimensional large displacements and rigid body dynamics. They are usually based in the Lagrangian or the Corotational methods and are primarily oriented to solve mechanical and aerospace problems, although some applications to structural stability do exist. Independently, several formulations have been developed to model plasticity: fiber elements, plastic flow theory and lumped plasticity are popular choices. In this dissertation a novel formulation capable of solving problems with displacement and material nonlinearities in a unified way is developed. Thus, the State Space approach is selected because all the basic equations of structures: equilibrium, compatibility and plasticity are solved simultaneously and thus the global and local states are mutually and explicitly dependent. To incorporate geometric nonlinearities, the Corotational approach, where rigid body motion and deformations are described separately, is adopted. To incorporate material nonlinearities, the formulation developed by Simeonov (1999) and Sivaselvan (2003) is included. In general, the set of equilibrium, compatibility and plasticity equations constitute a system of Differential Algebraic Equations (DAE). A procedure to solve such system exists and is implemented in the package IDA (Implicit Differential Algebraic solver) developed at the Lawrence Livermore National Laboratory (LLNL), which is used to solve the problem numerically. An experimental study on "zipper frames" was conducted to assess the accuracy of the proposed formulation. A "zipper frame" is a chevron braced frame where the beam to brace connections are linked through columns, called "zipper columns". The failure mode of a "zipper frame" is the successive inelastic buckling of its braces. Three shake table tests of a three stories "zipper frame" were performed at the UB-NEES laboratory. A model of the first story of the "zipper frame" was analyzed with the new formulation and its results compared to experimental data. It is found that the new formulation can reproduce the features of the test and it is very sensitive to all the model parameters. Results are presented
