NONLINEAR ANALYSIS OF AXIALLY LOADED CONCRETE-FILLED TUBE COLUMNS WITH CONFINEMENT EFFECT

Proper material constitutive models for concrete-filled tube (CFT) columns are proposed and verified by the nonlinear finite element program ABAQUS against experimental data. The cross sections of the CFT columns in the numerical analysis are categorized into 3 groups (circular section, square section, and square section stiffened by reinforcing ties). Via the numerical analyses, it is shown that for circular CFT columns, the tubes can provide a good confining effect to the concrete especially when the width-to-thickness ratio D/t is small (say D/t<40). For square CFT columns, the tubes do not provide a large confining effect to the concrete especially when the width-to-thickness ratio B/t is large (say B/t>30). The confining effect of square CFT columns with reinforcing ties is enhanced by the use of reinforcing ties especially when the tie spacing is small and the tie number (or tie diameter) is large.

Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/07339445
Corporate Authors:
American Society of Civil Engineers

1801 Alexander Bell Drive
Reston, VA United States 20191-4400
Authors:
- Hu, H-T
- Huang, C-S
- Wu, M-H
- Wu, Y-M
Publication Date: 2003-10

Language

English

Media Info

Features: Figures; References; Tables;
Pagination: p. 1322-29
Serial:
- Journal of Structural Engineering
- Volume: 129
- Issue Number: 10
- Publisher: American Society of Civil Engineers
- ISSN: 0733-9445
- Serial URL: http://ascelibrary.org/loi/jsendh

Subject/Index Terms

TRT Terms: Axial loads; Bridge engineering; Columns; Confined concrete; Nonlinear equations; Structural analysis; Structural supports; Tubular structures
Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

Accession Number: 00963255
Record Type: Publication
Files: TRIS
Created Date: Sep 29 2003 12:00AM