Practical calculation method for the overall stability of non-sway frames considering the inter-story interaction

被引：0
|
作者：
Lan S. [1 ]
Zhou D. [2 ]
Cheng X. [1 ]
Wang C. [1 ]
机构：
[1] College of Architecture and Civil Engineering, Kunming University, Kunming
[2] Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2023年 / 44卷 / 03期
关键词：
characteristic structural unit; critical bearing capacity; layer support coefficient; load factor; non-sway frames; overall stability; surplus stiffness coefficient; the effective length ratio;
D O I：
10.11990/jheu.202111023
中图分类号：
学科分类号：
摘要：
In view of the inconvenience of determining the overall stability of non-sway frames using the standard calculation length method for each component checking and not considering the mutual support between the same-layer columns and the insufficient inter-story interaction, this study first explores the non-sway frames of support laws of the mutual support between the same-layer columns and inter-story interaction, deriving the critical stiffness ratio coefficient of non-sway frames based on the spring-swinging column model and structure conversion method. Then, the coefficient is used to determine the structural-layer load factor by analyzing the characteristic structural elements of non-sway frames, the surplus coefficient of the layer stiffness that characterizes the surplus degree of the layer stiffness of non-sway frames, and the layer support coefficient that characterizes the inter-story support effect. Finally, the calculation formula that can directly calculate the overall stability bearing capacity of non-sway frames is obtained through the axial force weighted average method. This formula can quantitatively calculate the degree of mutual support between floors of non-sway frames and avoid the unreasonable design caused by the standard calculation length method, which may be caused by not considering the two support functions. This method can be used for engineering design and theoretical calculation. © 2023 Editorial Board of Journal of Harbin Engineering. All rights reserved.
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页码：450 / 457
页数：7
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