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Analytical models and a performance-based seismic design procedure were developed for
a structure with buckling-restrained knee-braces. The hinge-connected main structural members,
such as beams and columns, were designed only for gravity loads, and the knee-braces
were designed to resist all the lateral seismic load. The cross-sectional size of knee-braces
was estimated using the equivalent damping required to be supplied to meet a given performance
objective. Parametric study was performed with design variables such as slope and
yield stress of the braces. According to the time-history analysis results of a five-story structure
with buckling-restrained knee-braces, the maximum displacement of the model structure
turned out to correspond well with the desired target displacement after it is retrofitted by
knee braces following the proposed procedure.
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A new and practical technique of lateral bracing for single- and multistory
steel frame construction is presented and discussed. Disposable Knee i
Bracing (DKB) technique, as it is called in this paper, is made up of two struc- :
tural elements, the knee element and the diagonal brace element. The knee (
element is a fuse-like element that dissipates energy by the formation of plastic
flexural hinges at its ends and midspan when the building is subjected to severe
lateral loads. The diagonal brace element, on the other hand, provides the required
level of lateral stiffness and remains in the elastic range at all time. The
knee element is a disposable beam element that can be replaced once its energy
dissipation capacity is utilized. Standard limit analysis of low- and high-rise
steel frames are presented to demonstrate the advantages of the DKB against
traditional bracing and eccentric bracing.
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Article/eBook Full Name: Compressive strength of concrete at high temperatures: a reassessment
Author(s): G. A. Khoury
Publish Date: 01 December 1992
Published By: Magazine of Concrete Research, Volume 44, Issue 161
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Article/eBook Full Name: Brick-ballast and recycled-aggregate concrete
Author(s): Kumar, V., Roy, B.N., and Sai, A.S.R.
Publish Date: 1988
Published By: The Indian Concrete Journal, February 1988, 85-87
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2. Experiment Research on the Use of Recycled Brick Aggregate in Concrete Tiles
Article/eBook Full Name: Experiment Research on the Use of Recycled Brick Aggregate in Concrete Tiles
Author(s): Hui Li, Yan Feng Liu, Ming Guo, Rui Zhang and Jing Du
Publish Date: 2012
Published By: Advanced Materials Research (Volumes 374 - 377)
Related Links:
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3. Shear and Flexural Behavior of Brick-Aggregate Concrete Beams without Web Reinforcement
Article/eBook Full Name: Shear and Flexural Behavior of Brick-Aggregate Concrete Beams without Web Reinforcement
Author(s): Ali A. Akhtaruzzaman and Abul Hasnat
Publish Date: March 1, 1986
Published By: ACI Mater. J., volume 83 issue 2
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I do not know why CSi Computer did not update the very famous software Etabs
The Company upgraed CSI Safe , Sap and released a new version of Sap ( CSi Bridge)
But Etabs was not matched with this upgrading , till now using the old user interface..
and many times heared CSi is going to release Etabs V10 and nothing happend..
Starting from first principles, this book covers all of the foundational material needed to develop a clear understanding of the Mathematica language, with a practical emphasis on solving problems. Concrete examples throughout the text demonstrate how Mathematica language, can be used to solve problems in science, engineering, economics/finance, computational linguistics, geoscience, bioinformatics, and a range of other fields.
The book will appeal to students, researchers and programmers wishing to further their understanding of Mathematica language. Designed to suit users of any ability, it assumes no formal knowledge of programming so it is ideal for self-study. Over 290 exercises are provided to challenge the reader's understanding of the material covered and these provide ample opportunity to practice using the language.
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Author: Laura N. Lowes Dawn E. Lehman Anna C. Birely, Daniel A. Kuchma Christopher R. Hart Kenneth P. Marley | Size: 8 MB | Format:PDF | Quality:Unspecified | Publisher: University of Washington | Year: - | pages: 87 | ISBN: -
[img][/img]
This document provides detailed documentation of the design, testing, and preliminary results of the planar wall test program of the project "Behavior, Analysis, and Design of Complex Wall Systems", a joint effort between the University of Washington (PI Laura Lowes and co-PI Dawn Lehman) and the University of Illinois Urbana-Champaign (co-PI Dan Kuchma). Funded by NEES (George E. Brown, Jr. Network for Earthquake Engineering Simulation) and the Charles Pankow Foundation, the project seeks to establish the seismic performance of modern mid-rise reinforced concrete structural walls and to develop the tools and technologies to advance performance based design of these systems.
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-
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Author: Laura N. Lowes Dawn E. Lehman Jacob A. Turgeon Anna C. Birely, Daniel A. Kuchma Christopher R. Hart Kenneth P. Marley | Size: 5 MB | Format:PDF | Quality:Unspecified | Publisher: University of Washington | Year: - | pages: 70 | ISBN: -
[img][/img]
This document provides detailed documentation of the design, testing, and preliminary results of the planar wall test program of the project "Behavior, Analysis, and Design of Complex Wall Systems", a joint effort between the University of Washington (PI Laura Lowes and co-PI Dawn Lehman) and the University of Illinois Urbana-Champaign (co-PI Dan Kuchma). Funded by NEES and the Charles Pankow Foundation, the project seeks to establish the seismic performance of modern mid-rise reinforced concrete structural walls and to develop the tools and technologies to advance performance based design of these systems.
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-
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