Development And Application Of Yielding Steel Plate Damper To Improve Seismic Performance Of Structures

Passive damper has been widely used to improve seismic performance of structures by adding damping, and in some cases also adding stiffness. In the case of damping, the energy input is dissipated by various mechanisms. One of the common and inexpensive ways to absorb input energy induced by earthqua...

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Main Author:	Teruna, Daniel Rumbi
Format:	Thesis
Language:	English
Published:	2017
Subjects:	T Technology
Online Access:	http://eprints.usm.my/45716/1/Development%20And%20Application%20Of%20Yielding%20Steel%20Plate%20Damper%20To%20Improve%20Seismic%20Performance%20Of%20Structures.pdf
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spelling	my-usm-ep.457162021-11-17T03:42:16Z Development And Application Of Yielding Steel Plate Damper To Improve Seismic Performance Of Structures 2017-04 Teruna, Daniel Rumbi T Technology TA1-2040 Engineering (General). Civil engineering (General) Passive damper has been widely used to improve seismic performance of structures by adding damping, and in some cases also adding stiffness. In the case of damping, the energy input is dissipated by various mechanisms. One of the common and inexpensive ways to absorb input energy induced by earthquake is through inelastic deformation of steel material. A desirable steel damper possesses three important characteristic, namely: to have stable and large energy dissipation capability, to have large initial stiffness, and to have a representative mathematical model. The drawback of the previous steel damper makes it important in finding new ways to developed steel damper that meets the criteria of a good steel damper. In this study, four specimens of steel plate damper with diamond hollow shape were developed and tested under cyclic increasing load. The results confirmed that the steel dampers with convex shape and straight shape at the side part exhibit good performance without any degradation in stiffness and strength. However, in term of energy dissipation capability and elastic stiffness, steel damper with convex shape possessed better performance compared to steel damper with the straight shape. In addition, all steel specimens possess a damping ratio > 40% at moderate displacement, while damping ratio of 50% is reached at large displacement for specimen with convex shape at side part. For engineering application, numerical modeling and analysis were also performed. It was found that the proposed mathematical model (Chaboche or modified Chaboche) and simplified models agreed well with the experimental results. Furthermore, to describe the effect of steel damper in enhancing the seismic performance of structure, a four story steel frame with and without steel damper were investigated under three selected ground motion records that matched the response spectra design of Indonesian code. The results showed that stiffness ratio (SR) was very important for steel frame structures equipped with steel damper to provide good performance under seismic excitation. The response parameters in term of story drift, base shear demands, input energy demand, and hysteretic energy demand are significantly influenced by stiffness ratio (SR). Finally, to quantify the seismic performance of the entire structures with different stiffness ratio, damage and inter-story drift index are determined and summarized . It was concluded that the use of steel damper with SR = 4.0 can reduce inter-story drift index from 2.33% to 0.89%, and damage index from 0.76 to 0.51. 2017-04 Thesis http://eprints.usm.my/45716/ http://eprints.usm.my/45716/1/Development%20And%20Application%20Of%20Yielding%20Steel%20Plate%20Damper%20To%20Improve%20Seismic%20Performance%20Of%20Structures.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Awam
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	T Technology T Technology
spellingShingle	T Technology T Technology Teruna, Daniel Rumbi Development And Application Of Yielding Steel Plate Damper To Improve Seismic Performance Of Structures
description	Passive damper has been widely used to improve seismic performance of structures by adding damping, and in some cases also adding stiffness. In the case of damping, the energy input is dissipated by various mechanisms. One of the common and inexpensive ways to absorb input energy induced by earthquake is through inelastic deformation of steel material. A desirable steel damper possesses three important characteristic, namely: to have stable and large energy dissipation capability, to have large initial stiffness, and to have a representative mathematical model. The drawback of the previous steel damper makes it important in finding new ways to developed steel damper that meets the criteria of a good steel damper. In this study, four specimens of steel plate damper with diamond hollow shape were developed and tested under cyclic increasing load. The results confirmed that the steel dampers with convex shape and straight shape at the side part exhibit good performance without any degradation in stiffness and strength. However, in term of energy dissipation capability and elastic stiffness, steel damper with convex shape possessed better performance compared to steel damper with the straight shape. In addition, all steel specimens possess a damping ratio > 40% at moderate displacement, while damping ratio of 50% is reached at large displacement for specimen with convex shape at side part. For engineering application, numerical modeling and analysis were also performed. It was found that the proposed mathematical model (Chaboche or modified Chaboche) and simplified models agreed well with the experimental results. Furthermore, to describe the effect of steel damper in enhancing the seismic performance of structure, a four story steel frame with and without steel damper were investigated under three selected ground motion records that matched the response spectra design of Indonesian code. The results showed that stiffness ratio (SR) was very important for steel frame structures equipped with steel damper to provide good performance under seismic excitation. The response parameters in term of story drift, base shear demands, input energy demand, and hysteretic energy demand are significantly influenced by stiffness ratio (SR). Finally, to quantify the seismic performance of the entire structures with different stiffness ratio, damage and inter-story drift index are determined and summarized . It was concluded that the use of steel damper with SR = 4.0 can reduce inter-story drift index from 2.33% to 0.89%, and damage index from 0.76 to 0.51.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Teruna, Daniel Rumbi
author_facet	Teruna, Daniel Rumbi
author_sort	Teruna, Daniel Rumbi
title	Development And Application Of Yielding Steel Plate Damper To Improve Seismic Performance Of Structures
title_short	Development And Application Of Yielding Steel Plate Damper To Improve Seismic Performance Of Structures
title_full	Development And Application Of Yielding Steel Plate Damper To Improve Seismic Performance Of Structures
title_fullStr	Development And Application Of Yielding Steel Plate Damper To Improve Seismic Performance Of Structures
title_full_unstemmed	Development And Application Of Yielding Steel Plate Damper To Improve Seismic Performance Of Structures
title_sort	development and application of yielding steel plate damper to improve seismic performance of structures
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Awam
publishDate	2017
url	http://eprints.usm.my/45716/1/Development%20And%20Application%20Of%20Yielding%20Steel%20Plate%20Damper%20To%20Improve%20Seismic%20Performance%20Of%20Structures.pdf
_version_	1747821551893348352

Development And Application Of Yielding Steel Plate Damper To Improve Seismic Performance Of Structures

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