Seismic Vulnerability Assessment of Simple Steel Buildings with RC Shear Wall

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Hajipour ali; Mohamadizadeh Mohammad Reza

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Journal: Modares Civil Engineering journal Year:2018 | Volume:18 | Issue:4 Page(s): 71-83

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Information Journal Paper

Title

Seismic Vulnerability Assessment of Simple Steel Buildings with RC Shear Wall

Author(s)

Hajipour ali | Mohamadizadeh Mohammad Reza | Issue Writer Certificate

Keywords

Reinforced Concrete Shear wallQ1

performance-based designQ1

Incremental dynamic analysisQ1

VulnerabilityQ1

Abstract

Nowadays with development of urbanity, request for dwelling has increased extremely. In all the cases the steel structures as for the high speed of construction have a special status. Among the defect of steel buildings than concrete type is higher cost of construction. Hence, occasionally the fabricators with a view to imparting of advantage of both the construction speed and some deal decreasing providing cost of steel lateral bracing, use the steel buildings with Reinforced Concrete Shear wall as lateral bearing system. Hence, study in the field of analysis and design of this structure system seems necessary. At present, one of the most important goals of earthquake engineers is predicting of the structures behavior versus future earthquakes. Today, it has become evident that structures designed on the basis of the existing regulations sustain extensive damages in under intense earthquakes. Thus, performance-oriented design as a method based on acceptance of expected displacement and ductility has been considered. In earthquake engineering, it is imperative to determine the capacity and the seismic demand of the structure in terms of performance. The performance assessment of nonlinear systems is a complex task requiring appropriate analytical methods suitable for modeling the behavior of the structure against the earthquake. The Incremental dynamic analysis is an analytical tool which can be used to assess performance in earthquake engineering. This method is able to estimate the seismic demand and limit states of the capacity of a structure under seismic loading using suitable records scales to several levels. Utilizing this method, one can attain better understanding of the behavior of a structure from elastic to destruction conditions. In the present research, dynamic analysis of the time history and the robust software OpenSees have been employed considering the geometric nonlinear effects of materials for seven buildings having 3, 6, 9, and 12 stories and two plans. The structures under consideration are analyzed using Incremental dynamic analysis and the robust Opensees software subsequent to the design phase and considering the designed sections, gravity loading characteristics and specifications and seismic parameters. Then, graphing the cluster curves and IDA quantiles the buildings under consideration are assessed. Although the results of this study indicate better performance of the moderate structures in comparison to the short and rise structures, it seems that the proper height of a structure with respect to the characteristics of the soil of its construction site and the parameters of the resonance and damping between the structure and the soil (the effect of soil and structure interaction) and the frequency content of the acceleration records of the first mode in the region. The seismic intensity estimation parameter (which is considered in this study, the first-mode spectral acceleration) is a determinant factor in reflecting the behavior of the earthquake acceleration record applied to the structure. In order to conduct a detailed study with the IDA analysis, it is necessary to select the severity criterion in a way that best describes the content of the selected accelerogram. In spite of the relative advantage of the Spectral Spectrum Parameter (Sa) on the maximum acceleration (PGA), it still seems that this parameter is not a complete representation of record content.

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APA: Copy

Hajipour, ali, & Mohamadizadeh, Mohammad Reza. (2018). Seismic Vulnerability Assessment of Simple Steel Buildings with RC Shear Wall. MODARES CIVIL ENGINEERING JOURNAL, 18(4 ), 71-83. SID. https://sid.ir/paper/256627/en

Vancouver: Copy

Hajipour ali, Mohamadizadeh Mohammad Reza. Seismic Vulnerability Assessment of Simple Steel Buildings with RC Shear Wall. MODARES CIVIL ENGINEERING JOURNAL[Internet]. 2018;18(4 ):71-83. Available from: https://sid.ir/paper/256627/en

IEEE: Copy

ali Hajipour, and Mohammad Reza Mohamadizadeh, “Seismic Vulnerability Assessment of Simple Steel Buildings with RC Shear Wall,” MODARES CIVIL ENGINEERING JOURNAL, vol. 18, no. 4 , pp. 71–83, 2018, [Online]. Available: https://sid.ir/paper/256627/en

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