Monotonic and cyclic behavior of concrete-filled steel-tube beam-columns considering local buckling effect

被引：40

作者：

Zubydan, Ahmed H. ^{[1
]}

ElSabbagh, Ashraf I. ^{[1
]}

机构：

[1] Port Said Univ, Dept Civil Engn, Fac Engn, Port Said, Egypt

来源：

THIN-WALLED STRUCTURES | 2011年 / 49卷 / 04期

关键词：

Concrete-filled steel tube; Cyclic loading; Fiber element model; Local buckling; Hysteric behavior; HIGH-STRENGTH CONCRETE; OF-THE-ART; BOX COLUMNS; NONLINEAR-ANALYSIS; COMPOSITE COLUMNS; SEISMIC BEHAVIOR; MODEL; SECTIONS; DESIGN; LOADS;

D O I：

10.1016/j.tws.2010.12.007

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A mathematical model is developed to evaluate the monotonic and cyclic behavior of concrete-filled steel tube (CFST) beam-columns with rectangular cross section. The model includes the reduction in the steel compressive strength due the local buckling effect. The degradations in unloading and reloading stiffness of steel tube due to local buckling are also included. The model is based on fiber element method in which uniaxial stress-strain material laws are used for cross section components. The results obtained from the mathematical model were compared with experimental results for columns under monotonic as well as cyclic loads. It is observed that the proposed model predicts well the columns and beams nonlinear behavior compared with the experimental results. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：465 / 481

页数：17

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