Influence of design parameters on seismic response of post-tensioned steel MRF systems

Maria M. Garlock; James M. Ricles; Richard Sause

doi:10.1016/j.engstruct.2007.05.026

Influence of design parameters on seismic response of post-tensioned steel MRF systems

Maria M. Garlock, James M. Ricles, Richard Sause

Research output: Contribution to journal › Article › peer-review

63 Scopus citations

Abstract

Post-tensioned (PT) steel moment-resisting frame (MRF) systems are a new system and little is known about the influence of design parameters on their seismic response. This paper reports on a study that evaluates the influence of three different design parameters on the seismic response of PT MRFs. The three design parameters are: the connection strength, the panel zone strength, and an increase in the connection strength in the upper floors. Five prototype six-storey steel PT MRFs were designed with different combinations of these design parameters. Nonlinear dynamic time history analyses of the five PT MRFs were used evaluate the influence of these parameters on the seismic response. A practical range of connection strength was identified that provides acceptable performance. The analyses indicated that the panel zone strength does not significantly affect the seismic response, and that increasing the connection strength in the upper floors improves the seismic response of the frame.

Original language	English (US)
Pages (from-to)	1037-1047
Number of pages	11
Journal	Engineering Structures
Volume	30
Issue number	4
DOIs	https://doi.org/10.1016/j.engstruct.2007.05.026
State	Published - Apr 2008
Externally published	Yes

All Science Journal Classification (ASJC) codes

Civil and Structural Engineering

Keywords

Nonlinear time-history analysis
Post-tensioned
Seismic design
Self-centering
Steel connection
Steel moment-resisting frame

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10.1016/j.engstruct.2007.05.026

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title = "Influence of design parameters on seismic response of post-tensioned steel MRF systems",

abstract = "Post-tensioned (PT) steel moment-resisting frame (MRF) systems are a new system and little is known about the influence of design parameters on their seismic response. This paper reports on a study that evaluates the influence of three different design parameters on the seismic response of PT MRFs. The three design parameters are: the connection strength, the panel zone strength, and an increase in the connection strength in the upper floors. Five prototype six-storey steel PT MRFs were designed with different combinations of these design parameters. Nonlinear dynamic time history analyses of the five PT MRFs were used evaluate the influence of these parameters on the seismic response. A practical range of connection strength was identified that provides acceptable performance. The analyses indicated that the panel zone strength does not significantly affect the seismic response, and that increasing the connection strength in the upper floors improves the seismic response of the frame.",

keywords = "Nonlinear time-history analysis, Post-tensioned, Seismic design, Self-centering, Steel connection, Steel moment-resisting frame",

author = "Garlock, {Maria M.} and Ricles, {James M.} and Richard Sause",

note = "Funding Information: The research reported herein was conducted at the ATLSS Centre at Lehigh University, and was supported by the National Science Foundation (Grant No. CMS-9396120), a Lehigh University Fellowship, and a grant from the Pennsylvania Department of Community and Economic Development through the Pennsylvania Infrastructure Technology Alliance (PITA) programme. The opinions expressed in this paper are those of the authors and do not necessarily reflect the views of the sponsors. ",

year = "2008",

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doi = "10.1016/j.engstruct.2007.05.026",

language = "English (US)",

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AU - Garlock, Maria M.

AU - Ricles, James M.

AU - Sause, Richard

N1 - Funding Information: The research reported herein was conducted at the ATLSS Centre at Lehigh University, and was supported by the National Science Foundation (Grant No. CMS-9396120), a Lehigh University Fellowship, and a grant from the Pennsylvania Department of Community and Economic Development through the Pennsylvania Infrastructure Technology Alliance (PITA) programme. The opinions expressed in this paper are those of the authors and do not necessarily reflect the views of the sponsors.

PY - 2008/4

Y1 - 2008/4

N2 - Post-tensioned (PT) steel moment-resisting frame (MRF) systems are a new system and little is known about the influence of design parameters on their seismic response. This paper reports on a study that evaluates the influence of three different design parameters on the seismic response of PT MRFs. The three design parameters are: the connection strength, the panel zone strength, and an increase in the connection strength in the upper floors. Five prototype six-storey steel PT MRFs were designed with different combinations of these design parameters. Nonlinear dynamic time history analyses of the five PT MRFs were used evaluate the influence of these parameters on the seismic response. A practical range of connection strength was identified that provides acceptable performance. The analyses indicated that the panel zone strength does not significantly affect the seismic response, and that increasing the connection strength in the upper floors improves the seismic response of the frame.

AB - Post-tensioned (PT) steel moment-resisting frame (MRF) systems are a new system and little is known about the influence of design parameters on their seismic response. This paper reports on a study that evaluates the influence of three different design parameters on the seismic response of PT MRFs. The three design parameters are: the connection strength, the panel zone strength, and an increase in the connection strength in the upper floors. Five prototype six-storey steel PT MRFs were designed with different combinations of these design parameters. Nonlinear dynamic time history analyses of the five PT MRFs were used evaluate the influence of these parameters on the seismic response. A practical range of connection strength was identified that provides acceptable performance. The analyses indicated that the panel zone strength does not significantly affect the seismic response, and that increasing the connection strength in the upper floors improves the seismic response of the frame.

KW - Nonlinear time-history analysis

KW - Post-tensioned

KW - Seismic design

KW - Self-centering

KW - Steel connection

KW - Steel moment-resisting frame

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Influence of design parameters on seismic response of post-tensioned steel MRF systems

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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