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Steel beam - column joints in seismi...

Tsai, Keh-Chyuan.

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Steel beam - column joints in seismic moment resisting frames.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Steel beam - column joints in seismic moment resisting frames./
Author:	Tsai, Keh-Chyuan.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 1988,
Description:	442 p.
Notes:	Source: Dissertations Abstracts International, Volume: 51-03, Section: B.
Contained By:	Dissertations Abstracts International51-03B.
Subject:	Civil engineering. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8916922

Steel beam - column joints in seismic moment resisting frames.
Tsai, Keh-Chyuan.

Steel beam - column joints in seismic moment resisting frames. - Ann Arbor : ProQuest Dissertations & Theses, 1988 - 442 p.

Source: Dissertations Abstracts International, Volume: 51-03, Section: B.

Thesis (Ph.D.)--University of California, Berkeley, 1988.

This item must not be sold to any third party vendors.

Although Moment Resisting Frames (MRFs) are the most widely used structural system for seismic-resistant steel buildings, several important aspects of their behavior under real earthquake loading are not well understood. This combined experimental and analytical research program addresses some of these important issues, focusing primarily on the behavior of beam-column joints. The experimental investigation focused primarily on conventional moment connections with bolted web and welded flange details. Beam sections with a relatively large web plastic modulus were used, as experimental data for such sections is very limited. The effects of various connection details and welding procedures on the performance of nineteen full scale beam-column subassemblages were studied. In particular, the effects of reinforcing ribs as well as the use of supplementary welds between the shear tab and the beam web were assessed. One of the important unresolved issues for steel MRFs is the effects of yielding in the column panel zone of the beam-column joint. Analytical research on the dynamic behavior of steel MRFs designed to allow active yielding of panel zone joints is very limited. For this reason, an analytical investigation was conducted for steel MRFs designed according to a recently developed building code. In this analytical work, the numerical procedure and nonlinear elements used in solving the nonlinear dynamic system are studied, and a special panel zone joint element is developed and incorporated into the ANSR-1 computer program in order to account for the inelastic shear deformation of panel zone joints. Several steel MRF designs for a six-story and a twenty-story office building are analyzed using various ground acceleration records. From these analyses, the maximum beam inelastic rotation and the dissipated energy demands at critical joints of the frame are compared with the maximum experimentally obtained capacity. The effects of various panel zone designs on the dynamic behavior of the MRF are studied in detail. Moreover, it is found that the panel zone shear deformations can be significant and should be included explicitly in the calculations of the frame lateral displacement. For this purpose, a method incorporating actual panel zone flexibilities into the computation of elastic story drifts of the steel MRF is developed. The method does not require an additional element for the panel zone joint and can be used conveniently in conjunction with traditional structural analysis computer programs.Subjects--Topical Terms:

860360
Civil engineering.

Steel beam - column joints in seismic moment resisting frames.
LDR:03598nmm a2200301 4500 001 2282461
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008 220723s1988 ||||||||||||||||| ||eng d
035 $a (MiAaPQ)AAI8916922
035 $a AAI8916922
040 $a MiAaPQ $c MiAaPQ
100 1 $a Tsai, Keh-Chyuan. $3 3561263
245 1 0 $a Steel beam - column joints in seismic moment resisting frames.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 1988
300 $a 442 p.
500 $a Source: Dissertations Abstracts International, Volume: 51-03, Section: B.
500 $a Publisher info.: Dissertation/Thesis.
500 $a Advisor: Popov, Egor P.
502 $a Thesis (Ph.D.)--University of California, Berkeley, 1988.
506 $a This item must not be sold to any third party vendors.
506 $a This item must not be added to any third party search indexes.
520 $a Although Moment Resisting Frames (MRFs) are the most widely used structural system for seismic-resistant steel buildings, several important aspects of their behavior under real earthquake loading are not well understood. This combined experimental and analytical research program addresses some of these important issues, focusing primarily on the behavior of beam-column joints. The experimental investigation focused primarily on conventional moment connections with bolted web and welded flange details. Beam sections with a relatively large web plastic modulus were used, as experimental data for such sections is very limited. The effects of various connection details and welding procedures on the performance of nineteen full scale beam-column subassemblages were studied. In particular, the effects of reinforcing ribs as well as the use of supplementary welds between the shear tab and the beam web were assessed. One of the important unresolved issues for steel MRFs is the effects of yielding in the column panel zone of the beam-column joint. Analytical research on the dynamic behavior of steel MRFs designed to allow active yielding of panel zone joints is very limited. For this reason, an analytical investigation was conducted for steel MRFs designed according to a recently developed building code. In this analytical work, the numerical procedure and nonlinear elements used in solving the nonlinear dynamic system are studied, and a special panel zone joint element is developed and incorporated into the ANSR-1 computer program in order to account for the inelastic shear deformation of panel zone joints. Several steel MRF designs for a six-story and a twenty-story office building are analyzed using various ground acceleration records. From these analyses, the maximum beam inelastic rotation and the dissipated energy demands at critical joints of the frame are compared with the maximum experimentally obtained capacity. The effects of various panel zone designs on the dynamic behavior of the MRF are studied in detail. Moreover, it is found that the panel zone shear deformations can be significant and should be included explicitly in the calculations of the frame lateral displacement. For this purpose, a method incorporating actual panel zone flexibilities into the computation of elastic story drifts of the steel MRF is developed. The method does not require an additional element for the panel zone joint and can be used conveniently in conjunction with traditional structural analysis computer programs.
590 $a School code: 0028.
650 4 $a Civil engineering. $3 860360
690 $a 0543
710 2 $a University of California, Berkeley. $3 687832
773 0 $t Dissertations Abstracts International $g 51-03B.
790 $a 0028
791 $a Ph.D.
792 $a 1988
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8916922