Sobuz, M H R; Meraz, M M; Saha, A; Akid, A S M; Hasan, N M S; Rahman, M and Safayet, M A (2024) Performance assessment of various seismic resistant systems for a multistory structure in different seismic zones of Bangladesh. Journal of Engineering, Design and Technology, 22(3), pp. 718-738. ISSN 1726-0531
Abstract
Purpose: This study aims to present the variations of optimal seismic control of reinforced cement concrete (RCC) structure using different structural systems. Different third-dimensional mathematical models are used to examine the responses of multistory flexibly connected frames subjected to earthquake excitations. Design/methodology/approach: This paper examined a G + 50 multi-storied high-rise structure, which is analyzed using different combinations of moment resistant frames, shear walls, seismic outrigger systems and seismic dampers to observe the effectiveness during ground motion against soft soil conditions. The damping coefficients of added dampers, providing both upper and lower levels are taken into consideration. A finite element modeling and analysis is generated. Then the nature of the structure exposed to ground motion is captured with response spectrum analysis, using BNBC-2020 for four different seismic zones in Bangladesh. Findings: The response of the structure is investigated according to the amplitude of the displacements, drifts, base shear, stiffness and torsion. The numerical results indicate that adding dampers at the base level can be the most effective against seismic control. However, placing an outrigger bracing system at the middle and top end with shear wall can be the most effective for controlling displacements and drifts. Originality/value: The response of high-rise structures to seismic forces in Bangladesh’s soft soil conditions is examined at various levels in this study. This study is an original research which contributes to the knowledge to build earthquake resisting high-rises in Bangladesh.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | base shear; displacement; fluid viscous dampers; moment resistant frame; response spectrum; story drift |
| Index terms: | mathematical model, finite element modelling, outrigger, variation, methodology, spectrum analysis, performance assessment, effectiveness, Bangladesh, soft soil, earthquake, placing |
| Subjects: | concrete and cementitious materials, structural engineering, research methods, performance management, contractual condition, Geography, assessment methods, geotechnical engineering, environmental hazards, mathematical modelling, data science, analytical methods |
| Topics: | Quality Management, Human Resources, Contract Administration, Research Practice, Geographical Context, Engineering Principles, Construction Materials, Sustainability |
| Descriptive scope: | 4 PCTA |
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