Performance-Based Design Examples for Steel Moment-Resisting Frames with Supplemental Damping

The goal of this paper is to present a design procedure for steel moment-resisting frames with supplemental damping with performance-based design constraints. The first design example is based on a 4-story steel moment frame building with velocity dependent dampers; the second design example is bas...

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Main Author: Wenshen Pong
Format: Article
Language:English
Published: Electronic Journals for Science and Engineering - International 2002-01-01
Series:Electronic Journal of Structural Engineering
Subjects:
Online Access:http://10.0.0.97/EJSE/article/view/24
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author Wenshen Pong
author_facet Wenshen Pong
author_sort Wenshen Pong
collection DOAJ
description The goal of this paper is to present a design procedure for steel moment-resisting frames with supplemental damping with performance-based design constraints. The first design example is based on a 4-story steel moment frame building with velocity dependent dampers; the second design example is based on the same building with displacement dependent dampers. The primary seismic-resistant frames, without dampers, were designed to meet the Uniform Building Code of 1997. The amount of supplemental damping for velocity-dependent devices was proportioned based on the first mode of the structural motion. The design of supplemental damping for displacement dependent devices was based on the stiffness of the structure. The seismic resistant frames, with dampers, were designed to remain elastic under a Design Basis Earthquake. The design goal is to limit the lateral drift to 1% of the story height and the Demand-to-Capacity ratio of the moment connections within 1 for a Design Basis Earthquake event. In the event of a larger earthquake, such as Maximum Credible Earthquake, plastic hinge formations and some structural damage would be expected. In that case, the post-Northridge moment connections will provide the ductility to minimize the damage. Lessons learned and suggestions for design guidelines are presented.
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spelling doaj.art-c69825c48405424fbf08995453aa88d52023-08-29T11:47:58ZengElectronic Journals for Science and Engineering - InternationalElectronic Journal of Structural Engineering1443-92552002-01-012Performance-Based Design Examples for Steel Moment-Resisting Frames with Supplemental DampingWenshen Pong The goal of this paper is to present a design procedure for steel moment-resisting frames with supplemental damping with performance-based design constraints. The first design example is based on a 4-story steel moment frame building with velocity dependent dampers; the second design example is based on the same building with displacement dependent dampers. The primary seismic-resistant frames, without dampers, were designed to meet the Uniform Building Code of 1997. The amount of supplemental damping for velocity-dependent devices was proportioned based on the first mode of the structural motion. The design of supplemental damping for displacement dependent devices was based on the stiffness of the structure. The seismic resistant frames, with dampers, were designed to remain elastic under a Design Basis Earthquake. The design goal is to limit the lateral drift to 1% of the story height and the Demand-to-Capacity ratio of the moment connections within 1 for a Design Basis Earthquake event. In the event of a larger earthquake, such as Maximum Credible Earthquake, plastic hinge formations and some structural damage would be expected. In that case, the post-Northridge moment connections will provide the ductility to minimize the damage. Lessons learned and suggestions for design guidelines are presented. http://10.0.0.97/EJSE/article/view/24Performance-basedSteelMoment-Resisting FramesSupplemental DampingDisplacement-dependentVelocity-dependent
spellingShingle Wenshen Pong
Performance-Based Design Examples for Steel Moment-Resisting Frames with Supplemental Damping
Electronic Journal of Structural Engineering
Performance-based
Steel
Moment-Resisting Frames
Supplemental Damping
Displacement-dependent
Velocity-dependent
title Performance-Based Design Examples for Steel Moment-Resisting Frames with Supplemental Damping
title_full Performance-Based Design Examples for Steel Moment-Resisting Frames with Supplemental Damping
title_fullStr Performance-Based Design Examples for Steel Moment-Resisting Frames with Supplemental Damping
title_full_unstemmed Performance-Based Design Examples for Steel Moment-Resisting Frames with Supplemental Damping
title_short Performance-Based Design Examples for Steel Moment-Resisting Frames with Supplemental Damping
title_sort performance based design examples for steel moment resisting frames with supplemental damping
topic Performance-based
Steel
Moment-Resisting Frames
Supplemental Damping
Displacement-dependent
Velocity-dependent
url http://10.0.0.97/EJSE/article/view/24
work_keys_str_mv AT wenshenpong performancebaseddesignexamplesforsteelmomentresistingframeswithsupplementaldamping