5-7 December 2018 - Hong Kong, China

CONFERENCE PAPERS

Ninth International Conference on Advances in Steel Structures (ICASS 2018)


3-DIMENTIONAL NUMERICAL MODEL FOR DYNAMIC ANALYSIS OF PARTIALLY CONCRETE-FILLED THIN-WALLED CIRCULAR STEEL COLUMNS

 

Lyu Fei 1*; Yoshiaki Goto 2; Naoki Kawanishi 3

1* PH. D Student, Dept. of Civil Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya,466-8555, Japan.

E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

2 Professor, Dept. of Civil Engineering, Nagoya Institute of Technology

Gokiso-cho, Showa-ku, Nagoya,466-8555, Japan.

E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

3 Professor, Dept of Civil Engineering, National Institute of Technology, Toyota College, 471-8525, Japan.

E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

DOI:10.18057/ICASS2018.P.127

ABSTRACT:

Thin-walled partially concrete-filled tubular steel columns referred herein to as thin-walled PCFT columns have come to be used as the piers of elevated-girder bridges widely in Japan because of their excellent seismic performance. To consider this excellent seismic performance in design, it is essential to provide some analysis method to assess the ultimate behavior of the thin-walled PCFT columns by considering the cyclic local buckling of the steel tube, the nonlinear behavior of the confined in-filled concrete and the interface action between the steel tube and the in-filled concrete. The objective of present research is to propose a practical 3D fiber-based model with the failure segment that is computationally efficient, yet accurate enough to assess the ultimate behavior of the PCFT columns. This model is applicable to the seismic analysis of PCFT columns under arbitrary multi-directional seismic accelerations. The accuracy and numerical efficiency of the fiber-based model with the failure segment was herein confirmed by the comparison to the shell-solid element analysis results and the past test results concerning the cyclic loading tests and the shake table tests.

Keywords:

Thin-walled concrete-filled tubular steel columns (CFT); Fiber-based model; Cyclic loading test; Shake table test; Seismic analysis; Numerical optimization.

Download PDF:

IMPORTANT DATES

First call for paper:
1 January 2018
Abstract submission: (CLOSED)
1 April 2018
Notification of abstract acceptance:
on or before 16 April 2018 
Full paper submission: 
15 July 2018
Online Registration Begins:
1 August 2018
Notification of full paper acceptance:
31 August 2018
Early bird registration:
on or before 7 September 2018
Online Registration Closes:
31 October 2018
Announcement of programme:
1 November 2018
ICASS2018 December 05, 2018 08:00 AM Time's Up