The Effect of Cracking on Stiffness of Shear Walls under Lateral Loads
The lateral stiffness of buildings is one of the most important properties which define resistance to displacements under lateral loads. Moreover, it has a great impact on the natural period of the structures. Different stiffness’s values can ultimately affect the behavior of the structure under the seismic load and the lateral forces that will be applied to it. In this study the effect of cracking is studied on 2D shell thin cantilever shear wall by using ETABS. Multi linear elastic analysis is conducted with the ACI stiffness modifiers for each analysis step. The results showed that the cracks affect the value of the drift especially at the top of the high rise buildings and this will change the lateral stiffness and so change the fundamental period of the structures which lead to change in the applied shear force that comes from the earthquake. Finally, this study emphasizes that the finite element method can be considered as a good tool to predict the tensile stresses in the elements.
 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).
 Bungale. S. Taranath, 'Reinforced Concrete Design of Tall Buildings',
CRC Press, (2010).
 J. Ambrose, D. Vergun, 'Simplified Building Design for Wind and
Earthquake Forces', Third Edition, University of Southern California,
Los Angeles, California, (1995).
 B. S. Taranath, Wind and Earthquake Resistant Buildings: Structural Analysis and Design, CRC press,(2005).
 Bungale. S. Taranath, 'Structural Analysis and Design of Tall Buildings', McGraw-Hill, (1988).
 Sundaramoorthy Rajasekaran, 'Structural Dynamics of Earthquake Engineering', CRC Press, (2009).
 ASCE/SEI 7–16, Minimum Design Loads for Buildings and Other Structures (Reston, Va.: American Society of Civil Engineers: Structural Engineering Institute, 2017).
 Nami Rokhar, 'A Comprehensive Study on Parameters
Affecting Stiffness of Shear Wall-Frame Buildings under Lateral Loads', Master thesis, Faculty of graduate studies, The State University ofNew Jersey, (2014).
 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).
 Computers and Structures CSI, Inc., Berkeley, California, USA, 'ETABS V 16.2.0, Integrated BuildingDesign Software', (2017).