Influence of Gravity Framing on the Collapse Probability of Steel Buildings with Special Moment Frames

Teknik Dergi ◽  
2022 ◽  
Author(s):  
Adem KARASU ◽  
Cüneyt VATANSEVER
Keyword(s):  
Steel Buildings ◽  
Moment Frames ◽  
Collapse Probability ◽  
Special Moment Frames

Assessment of Performance-Based Seismic Design Methods in ASCE 41 for New Steel Buildings: Special Moment Frames

2018 ◽  
Vol 34 (3) ◽  
pp. 977-999 ◽  
Author(s):  
John Harris ◽  
Matthew Speicher
Keyword(s):  
Seismic Design ◽  
Performance Metrics ◽  
Structural Performance ◽  
Steel Buildings ◽  
Moment Frames ◽  
Component Level ◽  
Existing Building ◽  
Special Moment Frames ◽  
Steel Building ◽  
Performance Based Seismic Design

This paper presents the results of a study investigating the correlation between the anticipated seismic performance of an ASCE 7 code-compliant steel building with special moment frames and its predicted performance as quantified using ASCE 41 analysis procedures and structural performance metrics. Analytical results based on component-level performances at the collapse prevention structural performance level indicate that special moment frames designed in accordance with ASCE 7, and its referenced standards, have difficulty satisfying the acceptance criteria in ASCE 41 for an existing building intended to be equivalent to a new building.

scholarly journals Collapse Probability of Immediate and Special Moment Frames in Tehran under MCE

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Alireza Kianmehr
Keyword(s):  
Residential Buildings ◽  
Steel Structures ◽  
Moment Frames ◽  
Steel Moment Frames ◽  
Strong Earthquakes ◽  
Collapse Probability ◽  
Probabilistic Evaluation ◽  
Special Moment Frames ◽  
The Face ◽  
Human Losses

Residential buildings in most cities, which make up the most significant percentage of buildings, generally contain the most financial and human losses in the face of strong earthquakes. The purpose of this study is to investigate the possibility of the collapse of intermediate and unique steel moment frames against maximum ground excitations. In this study, through the first two steps of PEER methodology, using four steel structural frames with intermediate and unique moment frames, after designing according to the codes of national building regulations of Iran and standard 2800, this probabilistic evaluation was used to ensure their safety against collapse. In the next step, to deepen the results, 7 other sites from Tehran were selected. Their hazard spectrum was used to calculate the probability of collapse. In the end, it was observed that, with the reduction of the number of structural floors, the IDA curves at the lower IM level become horizontal in this project. The results showed that some of the 5-story steel structures under study in some parts of Tehran have a higher probability of collapse than acceptable.

scholarly journals STUDI PERBANDINGAN PERENCANAAN BANGUNAN BAJA SISTEM SPECIAL MOMENT FRAMES DAN SPECIAL PLATE SHEAR WALLS

2019 ◽  
Vol 3 (1) ◽  
pp. 57
Author(s):  
Deny Anarista Sitorus ◽  
Wiryanto Dewobroto
Keyword(s):  
Shear Walls ◽  
Analytical Models ◽  
Earthquake Risk ◽  
Steel Buildings ◽  
Moment Frames ◽  
Risk Area ◽  
Long Span ◽  
Seismic Force ◽  
Special Moment Frames ◽  
Special Truss Moment Frames

Indonesia merupakan wilayah rawan gempa, sehingga konstruksi bangunan memakai sistem penahan gaya seismik dianggap penting. Umumnya, struktur bangunan adalah beton bertulang, adapun baja penggunaan sistem special moment frames (SMF) lebih banyak dijumpai sebagai sistem penahan gaya seismik. Padahal menurut peraturan ASCE/SEI 7-10 terdapat pilihan sistem penahan gaya seismik untuk bangunan baja seperti special plate shear walls (SPSW), special truss moment frames (STMF) dan sistem khususnya lainnya. Studi ini akan memperlihatkan perbandingan perencanaan bangunan sistem SMF dan SPSW dalam mempelajari potensi penggunaan kedua sistem ini di Indonesia. Konfigurasi bentang antar kolom dipilih agar menghasilkan variasi desain bangunan sistem SMF sehingga menghasilkan struktur yang ekonomis. Dari hasil studi perbandingan perencanaan, diketahui jika konfigurasi struktur bangunan dengan panjang bentang antar kolom yang pendek, maka sistem SMF lebih ekonomis bila dibandingkan terhadap sistem SPSW. Akan tetapi, untuk panjang bentang antar kolom yang besar penggunaan sistem SPSW dapat menjadi alternatif. Indonesia is located in earthquake risk area, thus the construction of seismic resisting structures is important. In general, reinforcement concrete is used for the structural of buildings, while the use of steel material, special moment frames (SMF) is more commonly used as a seismic force-resistant frame system. According to the standard provision of ASCE/SEI 7-10, the seismic resisting systems for steel buildings are special plate shear walls (SPSW), special truss moment frames (STMF) and other specialized systems. This paper will present analytical models of SMF and SPSW, which is studied further to determine the potential use in Indonesia. To overcome this, parametric study is used to develop design variations with the SMF system cases on different column distance designed to find the most economical structure. The results of comparative design study shown that the SMF system is suitable to be applied for the columns distance with short span and verified to be more economical. However, for long span of columns distance the use of SPSW system can be an alternative.

scholarly journals Effect of Soil Classification on Seismic Behavior of SMFs considering Soil-Structure Interaction and Near-Field Earthquakes

2018 ◽  
Vol 2018 ◽  
pp. 1-17 ◽  
Author(s):  
Shahrokh Shahbazi ◽  
Iman Mansouri ◽  
Jong Wan Hu ◽  
Armin Karami
Keyword(s):  
Soil Structure ◽  
Near Field ◽  
Free Field ◽  
Soil Structure Interaction ◽  
Nonlinear Time History Analysis ◽  
Type Ii ◽  
Steel Buildings ◽  
Moment Frames ◽  
Structure Interaction ◽  
Soil Flexibility

Seismic response of a structure is affected by its dynamic properties and soil flexibility does not have an impact on it when the bottom soil of foundation is supposedly frigid, and the soil flexibility is also ignored. Hence, utilizing the results obtained through fixed-base buildings can lead to having an insecure design. Being close to the source of an earthquake production causes the majority of earthquake’s energy to reach the structure as a long-period pulse. Therefore, near-field earthquakes produce many seismic needs so that they force the structure to dissipate output energy by relatively large displacements. Hence, in this paper, the seismic response of 5- and 8-story steel buildings equipped with special moment frames (SMFs) which have been designed based on type-II and III soils (according to the seismic code of Iran-Standard 2800) has been studied. The effects of soil-structure interaction and modeling of the panel zone were considered in all of the two structures. In order to model radiation damping and prevent the reflection of outward propagating dilatational and shear waves back into the model, the vertical and horizontal Lysmer–Kuhlemeyer dashpots as seen in the figures are adopted in the free-field boundary of soil. The selected near- and far-field records were used in the nonlinear time-history analysis, and structure response was compared in both states. The results obtained from the analysis showed that the values for the shear force, displacement, column axial force, and column moment force on type-III soil are greater than the corresponding values on type-II soil; however, it cannot be discussed for drift in general.

Seismic performance of composite RCS special moment frames

2013 ◽  
Vol 17 (2) ◽  
pp. 450-457 ◽  
Author(s):  
Bahman Farahmand Azar ◽  
Hosein Ghaffarzadeh ◽  
Nima Talebian
Keyword(s):  
Seismic Performance ◽  
Moment Frames ◽  
Special Moment Frames

Cast Modular Panel Zone Node for Steel Special Moment Frames. I: Analytical Development

2007 ◽  
Vol 133 (10) ◽  
pp. 1393-1403 ◽  
Author(s):  
Robert B. Fleischman ◽  
Xuejun Li ◽  
Yong Pan ◽  
Ali Sumer
Keyword(s):  
Moment Frames ◽  
Panel Zone ◽  
Special Moment Frames ◽  
Analytical Development

Code-Oriented Methodology for the Seismic Design of Regular Steel Moment-Resisting Braced Frames

2014 ◽  
Vol 30 (4) ◽  
pp. 1683-1709 ◽  
Author(s):  
Edgar Tapia-Hernández ◽  
Arturo Tena-Colunga
Keyword(s):  
Seismic Design ◽  
Time History ◽  
Federal District ◽  
Design Parameters ◽  
Braced Frames ◽  
Steel Buildings ◽  
Moment Frames ◽  
Concentrically Braced Frames ◽  
Design Spectrum ◽  
Moment Resisting

In order to help improve the seismic design of regular steel buildings structured with ductile moment-resisting concentrically braced frames (MRCBFs) using the general design methodology of Mexico's Federal District Code (MFDC-04), suitable design parameters were first assessed using the results of pushover analyses of 13 regular MRCBFs. In order to insure collapse mechanisms consistent with the assumptions implicit in a code-based design (strong-column/weak-beam/weaker-brace), it is proposed to relate the minimum strength ratio for the resisting columns of the moment frames and the bracing system. Improved equations are proposed for a more realistic assessment of ductility and overstrength factors. In a second stage, the effectiveness of the improved methodology was assessed with the design of six regular steel buildings with MRCBFs. Buildings were evaluated by performing both pushover and nonlinear time-history analyses under ten selected artificial ground motions related to the corresponding design spectrum.

Results of Recent E-Defense Tests on Full-Scale Steel Buildings: Part 1 — Collapse Experiments on 4-Story Moment Frames

2008 ◽  
Author(s):  
Keiichiro Suita ◽  
Satoshi Yamada ◽  
Motohide Tada ◽  
Kazuhiko Kasai ◽  
Yuichi Matsuoka ◽  
...  
Keyword(s):  
Full Scale ◽  
Steel Buildings ◽  
Moment Frames
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