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Performance of Rigid Steel Frames under Adequate Soil Conditions Using Seismic Code Provisions

Open Journal of Civil Engineering 2018年第2期8卷 91-101页

作者： Muhammad Tayyab Naqash qazi umar farooq Department of Civil Engineering Faculty of Engineering Islamic University of Madinah Medina Kingdom of Saudi Arabia

This study is focused on?nonlinear analysis and design of?spatial and perimeter moment resisting frames for a 9-storeys?office building?having?9.15?m span.?Seismic?design criteria of Eurocode 8?Ductility Class High (DCH)?with behavior factor (q) of 6.5 and AISC/ASCE code,?Special Moment resisting Frame (SMF) with response modification factor (R) of 8 were employed.?The design outcomes?are?expressed in terms of frame performance?(non-linear analysis), section profiles?(code recommendations), strength-demand to capacity ratios, drift-demand to capacity?ratios and structural weight. The consequences of the research compare?two codes in term of weights and design performances.?This will aid professional engineers and researchers to select effective design criteria and capacity design rules?efficiently.

关键词： Eurocodes AISC ASCE FEMA Moment Resisting Frames Seismic Resistance Pushover Analysis

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Seismic Evaluation of Steel Moment Resisting Frames (MRFs)—Supported by Loose Granular Soil

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Open Journal of Earthquake Research 2019年第2期8卷 37-51页

作者： Muhammad Tayyab Naqash qazi umar farooq Ouahid Harireche Department of Civil Engineering Faculty of Engineering Islamic University of Madinah Medina Saudi Arabia

Soil underneath a structure might affect the behavior and the overall response of the structure in seismic events. The role of loose soil conditions and the inclusion of soil-structure interaction (SSI) in the analysis are important issues that need to be addressed. Since steel structures are light, two configurations designed as spatial and perimeter are considered to study the effect of soil on the steel structural frames for the same building. The paper provides a parametric analysis on the influence of SSI on the overall performance of MRFs (Moment Resisting Frames) according to the provisions of Saudi Building Code (SBC) [1]. A case study has been developed in which spatial and perimeter moment resisting frames of 12, 6 and 3 stories residential buildings are designed using Saudi Building Code (SBC) prescriptions. A modal response spectrum analysis has been carried out to see the influence of SSI on the fundamental period of vibration, top story displacement and inter-story drift limitations. Moreover, a static non-linear analysis has been performed to investigate the performance of frames, thus allowing to identify the influence of SSI on the structural design of steel MRFs.

关键词： Soil Structure Interaction (SSI) Saudi Building Code (SBC) American Society of Civil Engineers (ASCE) Federal Emergency Management Agency (FEMA) Moment Resisting Frames (MRFs) Seismic Resistance Seismic Codes

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