Deflection modification factors of multistory buildings considering soil-structure interaction

被引：0
|
作者：
Farhad Abedi-Nik [1 ]
Faramarz Khoshnoudian [2 ]
机构：
[1] Department of Civil Engineering, SADRA Institute of Higher Education
[2] Department of Civil Engineering, Amirkabir University of Technology
来源：
Earthquake Engineering and Engineering Vibration | 2015年 / 14卷 / 03期
关键词：
defl ection modifi cation factor; multistory structure; inertial soil-structure interaction; nonlinear regression analysis;
D O I：
暂无
中图分类号：
TU435 [土动力学与振动地基];
学科分类号：
0801 ; 080104 ; 0815 ;
摘要：
In this investigation,attempts are made to examine the effects of soil-structure interaction on the deflection modification factor of multistory buildings and to clarify the role of deformable soil on this factor.A comprehensive study is conducted to investigate the effect of inertial interaction on displacement demand ratios in soil-structure systems with different structural characteristics and various non-dimensional parameters,using a simplified interacting model.A two-step regression analysis of the nonlinear,dynamic computer simulation results obtained,leads to a reliable and accurate formula for predicting deflection modification factors that incorporate foundation flexibility.The results illustrate that the application of deflection modification factors derived from fixed-base structures can lead to unsafe evaluation of the structures on soft soil.The proposed formula provides a useful tool for design engineers to incorporate the effect of soil-structure interaction into the evaluation of structural deformations.
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页码：561 / 570
页数：10
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