The Effect of Shear Wall Positions on the Seismic Response of Frame-Wall Structures

Authors: Anas M. Fares

Abstract:

The configuration of shear walls in plan of building will affect the seismic design of structure. The position of these walls will change the stiffness of each floor in the structure, the diaphragm center of mass displacement, and the drift of floor. Structural engineers preferred to distribute the walls in buildings to make the center of mass almost close enough to the center of rigidity, but to make this condition satisfied, they have many choices: construct the walls on the perimeter, or use intermediate walls, or use walls as core. In this paper and by using ETABS, each case is studied and compared to other cases according to three parameters: lateral stiffness, diaphragm displacement, and drift. It is found that the core walls are the best choice for the position of the walls in the buildings to resist earthquake loads.

Keywords: Lateral loads, lateral displacement, reinforced concrete, shear wall, seismic, ASCE7-16 code, ACI code, stiffness, drift.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.2643691

References:

[1] Anas M. Fares, 'Effect of shear wall openings on the fundamental period of shear wall structures', Master thesis, Faculty of graduate studies, An-Najah National University, (2018).
[2] Bungale. S. Taranath, 'Reinforced Concrete Design of Tall Buildings', CRC Press, (2010).
[3] J. Ambrose, D. Vergun, 'Simplified Building Design for Wind and Earthquake Forces', Third Edition, University of Southern California, Los Angeles, California, (1995).
[4] B. S. Taranath, Wind and Earthquake Resistant Buildings: Structural Analysis and Design, CRC press, (2005).
[5] Bungale. S. Taranath, 'Structural Analysis and Design of Tall Buildings', McGraw-Hill, (1988).
[6] Sundar amoorthy Raja sekaran, 'Structural Dynamics of Earthquake Engineering', CRC Press, (2009).
[7] Computers and Structures CSI, Inc., Berkeley, California, USA, 'ETABS V 16.2.0, Integrated Building Design Software', (2017).
[8] ACI 318, Building Code Requirements for Structural Concrete (ACI 318m-14): An ACI Standard: Commentary on Building Code Requirements for Structural Concrete (ACI 318m-14) (Farmington Hills, MI: American Concrete Institute, 2014).
[9] ASCE/SEI 7–16, Minimum Design Loads for Buildings and Other Structures (Reston, Va.: American Society of Civil Engineers: Structural Engineering Institute, 2017).
[10] The standards institution of Israel SII, 'Amendment No. 3 of Israel Standard Si 413', in Design provisions for earthquake resistance of structures (2009).