Dynamic behaviour of stiffened coupled shear walls with flexible bases

✍ Scribed by J.S. Kuang; C.K. Chau

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 233 KB
• Volume: 73
• Category: Article
• ISSN: 0045-7949
• DOI: 10.1016/s0045-7949(98)00261-2

✦ Synopsis

The free vibration characteristics of stiened coupled shear walls with ¯exible bases is investigated using a discrete±continuous approach, where the structure is considered as both a discrete system and a continuous system at dierent stages of the analysis. The stinesses of the ¯exible foundations are represented by rotational and translational springs at the base of each shear wall. The stiened system is reinforced by an additional stiening beam at some level of the structure. This induces additional axial forces, and thus reduces the bending moments in the walls and the lateral de¯ection, and increase the natural frequencies. The eects of foundation stiness and the stiening beam on the free vibration characteristics of the structure are studied. The optimal location of the stiening beam for increasing as far as possible the ®rst natural frequency of vibration is presented.