Calculation of Limit of Height-width Ratio of Tall Isolated Structure Under Seismic Effect
LIU Yanhui
LIN Gangyuan
YANG Pengcheng
JIN Jianmin
Abstract：Aimed to tall isolated structure, by adopting a multi-mass system and considering the condition that could keep tall isolated structure from overturning during earthquake, the tensile stress in isolation bearing under the edge of structure should not exceed 1 MPa, the compressive stress in isolation bearing under the edge of structure should not exceed 30 MPa, the paper derives the limit of height-width ratio formulas with consideration of the effects of different earthquake fortification intensities, site classifications, and damping ratios of isolated story. The paper analyzes the relationship between the limit of height-width ratio and the basic period of structure, and gets the effect of the change of structural basic period on the limit of height-width ratio. Taking the three-span tall base-isolated structure as an example, the paper calculates the high width ratio of isolated structure with the maximum displacement of isolation bearing of 300 mm and 400 mm. The analysis results provide reference for the height-width ratio of Tall isolated structure.
Keywords：Tall isolated StructureThe limit of height-width ratioThe basic period of structure
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：9( 79-87 )