ULTIMATE CAPACITIES OF FRAMES WITH STRAIN-SOFTENING CONNECTIONS

3rd International Conference on Steel and Aluminium Structures (ICSAS 95) -- MAY 24-26, 1995 -- ISTANBUL, TURKEYWOS: A1995BD44D00028…Bogazici Univ, Dept Civil Engn, Sci & Tech Res Council Turkey, ARCELIK, Bogazici Univ Fdn, Bogazici Univ Printing House, Eczacibasi ASKAYNAK, ENKA, F 16 Syst Programming Off, TEKIZ, TOYOTASA, Turkish Airlines, TUBITAK, UNESCO, YAPI MERKEZ

Stiffened coupled shear walls on elastic foundation with flexible connections and stepwise changes in width

WOS: 000184091900004The exceedingly large top drift and bottom bending moment due to the weakening of shear walls in tall buildings by door, window and corridor openings is one of the most frequently encountered problems of structural engineering. An elegant way of tackling the foregoing problem is to employ stiffening beams. Authors who tried to find closed form solutions could handle only cases with up to two stiffening beams. With the approach used in the present study, a computer program which can find analytical expressions for the design of coupled shear walls with many stiffening beams has been prepared making use of the MATHEMATICA computer algebra system, rendering possible an optimization with respect to different parameters. In all of the previous works, all properties of the shear walls and the connecting beams have to be kept constant along the height of the building. The present work can treat a coupled shear wall with any number of stiffening beams and flexible connections, having any number of occasional changes in the properties of the shear walls and the connecting beams. A perfect agreement has been observed between the results of the present study and those of (SAP90) Structural Analysis Program in the examples used for the verification of the present method. Thus, the present method proves to be a perfect mean of predesign, since it gives results in an extremely short time