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Volume :29 Issue : 2 2002      Add To Cart                                                                    Download

SWESA - Optimization in the design of shear walls

Auther : ABDULLATEEF M. AL-KHALEEFI* AND CHEE - CHEIH THOMAS JAN**

*Department of Civil Engineering, Kuwait University. P.O.Box 5969, Safat 13060, Kuwait.

**Department of Architectural Engineering, Nan-Jeon Instiute of Technology.
Tainan Taiwan. 

ABSTRACT

Shear walls are commonly used in tall buildings to resist the effects of gravity loads and story shears due to lateral loads. They are deep, relatively thin, vertically cantilevered reinforced concrete members. Together, shear walls and frames provide the overall strength to withstand wind or earthquake forces in tall buildings. A software, SWESA (Shear Walls Expert Systems Analysis), is developed to incorporate the expertise from a variety of designs on shear walls. Wind pressures are calculated and distributed over the height of the building in accordance with specific design provisions. Story shears and overturning moments are determined analytically. The program ensures that the lateral deflection calculated from the application of wind forces does not exceed the required deflection index. A simple optimization technique is utilized to obtain the optimal thickness of shear walls in order to satisfy the allowable drift requirement. The strength of shear walls containing uniformly distributed vertical reinforcement and subjected to combined axial load, bending moment and shear force can be calculated in the developed program. Strength of lintel beams due to the effect of openings in shear walls can be calculated.

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