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RISS 인기검색어
- 검색키워드
- 저자 : Mohammad-Reza Banan (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
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Error Estimation of Nonlinear Equivalent Static Analysis for 3D-BRB Frames
Hosein Sangtarash,Mohammad-Reza Banan,Mahmoud-Reza Banan 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.5
Capacity Spectrum Method (CSM) as a nonlinear equivalent static method is one of the practical procedures which is usually usedto estimate the seismic demands for design and evaluation of structural systems. This paper proposes a nonlinear equivalent staticmethod called MPA-MCSM which combines the Modified Capacity Spectrum Method, MCSM, and the Modal Pushover Analysis,MPA. The accuracy of the developed algorithm is investigated for response prediction of Buckling Restrained Brace (BRB) frameswith irregularities in elevation. The accuracy assessment of the proposed method is evaluated based on the computation of fourseismic demands; peak roof displacement, story drift, base shear and story shear for each considered structure. The accuracy of MPAMCSMresponses is checked against the results obtained from nonlinear time-history analysis. Thirty different models consist of 3-,9- and 20-story structures subjected to 7 pairs of ground motions were analyzed. The results reveal that MPA-MCSM providesconservative seismic demands and has a good accuracy for BRB frames.
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Numerical cyclic behavior of T-RBS: A new steel moment connection
Saeed Ataollahi,Mohammad-Reza Banan,Mahmoud-Reza Banan 국제구조공학회 2016 Steel and Composite Structures, An International J Vol.21 No.6
After observing relatively poor performance of bolted web-welded flange beam-to-column connections during 1994 Northridge earthquake, various types of connections based on two concepts of: (i) strengthening the connection; and (ii) weakening the beam ends were proposed. Among these modified or newly proposed connections, bolted T-stub connection follows the concept of strengthening. One of the connections with the idea of weakening the beam ends is reduced beam section (RBS). In this paper, finite element simulation is used to study the cyclic behavior of a new proposed connection developed by using a combination of both mentioned concepts. Investigated connections are exterior beam-to-column connections designed to comply with AISC provisions. The results show that moment capacity and dissipated energy of the new proposed connection is almost the same as those computed for a T-stub connection and higher than corresponding values for an RBS connection.
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Seismic behavior of RC building by considering a model for shear wall-floor slab connections
Mehdi Soleimani-Abiat,Mohammad-Reza Banan 사단법인 한국계산역학회 2015 Computers and Concrete, An International Journal Vol.16 No.3
Connections are the most important regions in a structural system especially for buildings in seismic zones. In R.C. structures due to large dimensions of members and lack of cognition of the stress distribution in a connection, reaching a comprehensive understanding of the connection behaviors becomes more complicated. The shear wall-to-floor slab connections in lateral load resisting systems have a potential weakness in transferring loads from slabs to shear walls which might change the path of load transformation to shear walls. This paper tries to investigate the effects of seismic load combinations on the behavior of slabs at their connection zones with the shear walls. These connection zones naturally are the most critical regions of the slabs in RC buildings. The investigation carried on in a simulated environment by considering three different structures with different shear wall layout. The final results of our study reveal that layout of shear walls in a building significantly affects the magnification of forces developed at the shear wall-floor slab connections.
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