Control of Lateral Displacement for Super Tall Building by Floor & Partial 3D Brace

Abstract:

Present control system of lateral displacement for super tall building has problems as follows, stress concentrate on some floor, shear lag, restriction on architectural design, etc. Thus in spite of superior structural ability the efficiency of system is so lessened. This study is about the system that using X type Floor brace and Partial 3D brace, for the purpose of lateral displacement control. This system is a method that distribute lateral loads equally inner wall. According to analysis result, Floor brace and Partial 3D brace system have equal or superior lateral displacement control ability of Outrigger system, by control of brace shape, arrangement, stiffness. When reducing core ratio, Floor brace system shows similar displacement control as outrigger system. If core shape becomes rectangular, Partial 3D brace system does not show difference in maximum displacement in X and Y directions as large as in Outrigger system. Also in case of Outrigger system, abrupt lateral displacement occurs by wind load nearby the outrigger floor. On the contrary, Partial 3D brace system is a structural system advantageous for habitability near specific floor since smaller lateral displacement is shown to reduce the effects of wind vibration and wind acceleration.

• Periodical: Applied Mechanics and Materials (Volumes 284-287)
• Pages: 1251-1258
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.284-287.1251
• Online since: January 2013
• Authors: Sung Woo Shin, Cheul Kyu Jung, Kwang Soo Lee
• Keywords: Core Ratio, Floor Brace System, Lateral Displacement, Outrigger System, Partial 3D Brace System, Super Tall Building, Tube System

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