Analysis of Shear Wall Systems Using Plane Stress Elements
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RESEARCH PAPER
Analysis of Shear Wall Systems Using Plane Stress Elements Sohrab Sepehrnia2 · Hossein Rahami1 · Mohammad Mirhosseini2 · Ehsanollah Zeighami2 Received: 31 January 2019 / Accepted: 22 October 2019 © Shiraz University 2019
Abstract Finite element method takes advantage of robust methodology or analysis of different types of structures, particularly the tall buildings. Accordingly, a number of displacement and strain-based finite element approaches have been developed in various fields of civil engineering. However, many lower-order finite element methods still encounter analytical drawbacks dealing with analysis of tall buildings. The absence of an appropriate in-plane rotational stiffness in some of the lower-order finite element analysis methods and the existence of parasitic shear effects in the governing displacement functions are counted as the most effective factors which are likely to emerge within analysis of tall buildings. In this respect, finite element approach is presented in this paper, which is capable of incorporating the stiffness of all lateral load-resisting systems. Furthermore, as the horizontal strains are ignored in all elevation levels of the element, a uniform lateral displacement pattern is obtained for the proposed panel element. This panel-type element is a strain-based element including eight degrees of freedom which has been formulated according to the general behaviour of beam element. Consequently, in order to validate the accuracy and efficiency of the proposed approach, a number of numerical analyses are performed. Keywords Tall Building · Strain-based finite element method · In-plane rotation · Coupling effect
1 Introduction The advantage of applying shear walls in high-rise buildings to resist the lateral-induced forces has been extensively investigated (Kheyroddin et al. 2017). Many key parameters are involved in analysis and design of the tall structures that are not required to be dealt with in the case of short structures (Broujerdian et al. 2019). A number of computational methods have been developed to analyse the structural behaviour of symmetric and asymmetric high-rise buildings. These analytical approaches are known as the continuum method which is based on the closed-form solution, the frame method which is categorized as the wide column and the solid wall analogies, the finite element and the finite strip methods (Coull and Smith 1991; Macleod and Hosney 1977; Kim et al. 2005).
* Hossein Rahami [email protected] 1
School of Engineering Science, College of Engineering, University of Tehran, Tehran, Iran
Department of Civil Engineering, Arak Branch, Islamic Azad University, Arāk, Iran
2
In general, the finite element methods can be employed as a powerful means to analyse all types of building structures (Atri and Shojaee 2016). Finite element method is one of the commonly applied techniques in structural engineering whose versatility has been studied for many years (Naderpour and Mirrashid 2019). The finite element method is generally based
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