A new model for analyzing nonlinear torsion behavior of concrete filled steel tube columns with rectangular section

An experimental study on concrete filled steel tube columns with rectangular section subjected to compressionflexure-torsion combined action has been carried out. The failure modes and load-deformation hysteretic relations were obtained. Based on the principles of classical material mechanics, the r...

Full description

Saved in:
Bibliographic Details
Published in:Earthquake Engineering and Engineering Vibration 2016-06, Vol.15 (2), p.269-282
Main Authors: Wang, Yuhang, Nie, Jianguo, Fan, Jiansheng
Format: Article
Language:English
Subjects:
Civil Engineering
Concrete
Concretes
Control
Dynamical Systems
Earth and Environmental Science
Earth Sciences
Fibers
Geotechnical Engineering & Applied Earth Sciences
Mathematical models
Mechanical properties
Nonlinearity
Seismic engineering
Steel
Steel columns
Structural steels
Studies
Torsion
Tubes
Vibration
循环荷载作用
扭转效应
有限元模型
矩形截面
纤维截面
行为分析
钢管混凝土柱
非线性
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:An experimental study on concrete filled steel tube columns with rectangular section subjected to compressionflexure-torsion combined action has been carried out. The failure modes and load-deformation hysteretic relations were obtained. Based on the principles of classical material mechanics, the relations between the torsion curvature of the section and the shear strain of the fiber on the section were established. Then the strain distribution on the rectangular section of concrete filled steel tube columns subjected to torsion was analyzed. The three-dimensional refined finite element model was also built, in order to make the precision verification. The matrix forms of the relation between the torsion curvature of the section and the shear strain of the fiber on the section were derived, and introduced into the fiber beam model considering nonlinear torsion effect on the section. The comparison between test results and calculation results showed that the fiber beam model considering nonlinear torsion effect had high modeling efficiency and solution precision for predicting the torsion behavior of concrete filled steel tube columns with rectangular sections, and was suitable for analyzing the dynamic response of various structures subjected to the combined cyclic load caused by the earthquake load.
ISSN:1671-3664
1993-503X
DOI:10.1007/s11803-016-0321-5