5-7 December 2018 - Hong Kong, China

CONFERENCE PAPERS

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


DESIGN METHOD OF TRIPLE CROSS-ARM PRE-TENSIONED CABLE STAYED BUCKLING-RESTRAINED BRACES

 

Peng Zhou 1* and Yan-Lin Guo 1

1 Department of Civil Engineering, Tsinghua University, Beijing, China

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

DOI:10.18057/ICASS2018.P.026

ABSTRACT:

This paper proposes triple cross-arm pre-tensioned cable stayed buckling-restrained braces (TPCS-BRBs), where the stays are pinned to the external tube. Explicit expression for calculating the elastic buckling load of the TPCS-BRB is obtained in closed form through curve fitting, by adopting the finite element analysis (FEA) result on a generalized design parameter that can be deduced from a single cross-arm PCS-BRB (SPCS-BRB). It is found that two distinctive types of buckling modes might occur in the TPCS-BRB, namely single-wave symmetric and double-wave antisymmetric buckling modes. In addition, the load resistance of the TPCS-BRB subjected to monotonic axial load under antisymmetric buckling mode is explored through an elastic-plastic FEA. Corresponding lower limit of restraining ratio is obtained so that overall instability failures of the TPCS-BRBs would not occur by ensuring the cables not to become slack before the TPCS-BRBs reaching their ultimate states. At last, the effect of initial pre-tensioning force of the cables and initial geometric imperfection considering interactive imperfection on the ultimate load-carrying capacities of the TPCS-BRBs are investigated.

Keywords:

Triple cross-arm pre-tensioned cable stayed buckling-restrained braces (TPCS-BRB); Elastic buckling load; Initial pre-tensioning force; Interactive imperfection; Load resistance

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