Three-dimensional Analysis of Shear Wall-frame Structures PDF Download
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Author: Khosrow Esmailzadeh
Publisher:
ISBN:
Category : Shear (Mechanics)
Languages : en
Pages : 334
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Book Description
Author: Khosrow Esmailzadeh
Publisher:
ISBN:
Category : Shear (Mechanics)
Languages : en
Pages : 334
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Book Description
Author: Edward L. Wilson
Publisher:
ISBN:
Category : Buildings
Languages : en
Pages : 218
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Book Description
This report is a user's guide for CTABS80, a computer program for the linear three-dimensional structural analysis of multistory frame and shear wall buildings subjected to static or dynamic loadings. In CTABS80, the building is idealized as an assemblage of vertical independent frame and shear wall systems interconnected by horizontal floor diaphragms which are rigid in their own plane. The frame and shear wall systems must basically be of rectangular geometry (in elevation) with vertical columns (or piers) and horizontal beams (or spandrels). However, with special modeling techniques, very complex situations may be considered. A special shear panel element is developed to enable modeling of discontinuous shear walls and shear walls with arbitrary openings. A diagonal bracing element to model braced frames (X-braced, K-braced, or eccentrically braced systems) is also presented. The column, shear panel, and diagonal formulations include the effects of bending, axial, and shear deformations. Bending and shear deformations are also included in the beam formulation; however, the effects of axial deformations are neglected. The effects of the finite dimensions of the beams and columns on the stiffness of a frame or shear wall system are automatically included.
Author: Re Ato Lu Rifat
Publisher: LAP Lambert Academic Publishing
ISBN: 9783659115509
Category : Science
Languages : en
Pages : 0
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Book Description
Recently, a rapid increase has taken place in the number of tall buildings. In multi-storey buildings made of reinforced concrete, the lateral loads are often resisted by specially arranged shear walls. Weakening of shear walls in tall buildings by doors, windows and corridor openings is one of the most frequently encountered problems of structural engineering. In planar coupled shear wall analyses, the lateral loads are applied in such a way that the deformation of the shear wall is confined within its own plane. In this book, the Continous Connection Method (CCM) is used in conjunction with Vlasov's theory of thin-walled beams, for the three dimensional analysis of non-planar coupled shear walls subjected to lateral loads which produce combined flexural and torsional deformations. To be more general, the present book deals with non-symmetrical structures both in the formulation and in the numerical applications. Both symmetrical and asymmetrical examples have been solved by the program prepared in the present study and compared with the solutions found by the SAP2000 structural analysis program and a perfect match has been observed.
Author: V. Ramakrishnan
Publisher:
ISBN:
Category : Finite element method
Languages : en
Pages : 46
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Book Description
Author: Edward L. Wilson
Publisher:
ISBN:
Category : Building
Languages : en
Pages : 138
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Book Description
This report presents the theoretical basis for CTABS80, a computer program for the linear three-dimensional structural analysis of multistory frame and shear wall buildings subjected to static or dynamic loadings. In CTABS80, the building is idealized as an assemblage of vertical independent frame and shear wall systems interconnected by horizontal floor diaphragms which are rigid in their own plane. The frame and shear wall systems must basically be of rectangular geometry (in elevation) with vertical columns (or piers) and horizontal beams (or spandrels). However, with special modeling techniques, very complex situations may be considered. A special shear panel element is developed to enable modeling of discontinuous shear walls and shear walls with arbitrary openings. A diagonal bracing system to model braced frames (X-braced, K-braced, or eccentrically braced systems) is also presented. The column, shear panel, and diagonal formulations include the effects of bending, axial, and shear deformations. Bending and shear deformations are also included in the beam formulation: however, the effects of axial deformations are neglected. The effects of the finite dimensions of the beams and columns on the stiffness of a frame or shear wall system are automatically included. The buildings may be unsymmetrical and nonrectangular in plan. Torsional behavior and interstory compatibility are accurately reflected in the results.
Author: Edward L. Wilson
Publisher:
ISBN:
Category :
Languages : en
Pages : 85
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Book Description
Author: Fardad Falakfarsa
Publisher:
ISBN:
Category :
Languages : en
Pages : 254
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Book Description
Author: Edward L. Wilson
Publisher:
ISBN:
Category : Buildings
Languages : en
Pages :
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Book Description
Author: J. K. Biswas
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Mathieu Côté (M. Eng)
Publisher:
ISBN:
Category :
Languages : en
Pages : 93
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Book Description
Deciding on the appropriate layout of shear walls and the thickness of each member is an iterative process that is time consuming and often leads to suboptimal results. Every time the stiffness of the building is modified, the structural designer must ensure deflection and inter-story drift limits are respected followed by flexural, shear and torsional strength checks for each shear wall. A computational optimization framework has the potential to limit the design time, but most importantly to identify layout configurations with lower costs, weight, embodied carbon and with increased consideration for architectural constraints. Additionally, an optimization framework can provide a strong tool for early stage, pre-conceptual idea exploration and thereby lead to an increased collaboration between architects and engineers. This thesis presents an approach that allows the structural designer to design the shear wall layout of a three-dimensional structure using a linearized modal analysis and a modified genetic algorithm. The presented design scheme uses a ground structure approach as it allows for architectural constraints to be embedded in the design. The objective is defined as a cost function that incorporates material cost and constructability. The proposed framework is used to design the shear wall layout of a building under wind and seismic load cases and is compared to the design obtained with conventional methods. Key terms: Shear wall layout, reinforced concrete, structural optimization, topology optimization, genetic algorithm, dynamic analysis, three-dimensional analysis, cost analysis of lateral systems, tall buildings
