5-7 December 2018 - Hong Kong, China

CONFERENCE PAPERS

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


FINITE ELEMENT ANALYSIS ON A LARGE-SPAN TRANSMISSION TOWER WITH BUILT-UP COLUMNS

 

Fang Li 1*, Hong-Zhou Deng 1

1 Department of Structural Engineering, Tongji University, Shanghai, China

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DOI:10.18057/ICASS2018.P.115

ABSTRACT:

In this paper, mechanical performance of a new type of large-span transmission tower (455 meters high) is analyzed by adopting finite element (FE) software ANSYS. The significant difference between this new tower with regular ones lies in the tower's legs. In the new tower, each leg is a built-up column, which is constituted with four steel tubes. At the position of each joint, connecting beams (CBs) are arranged to join the four tubes in the built-up column together. Thus, force distribution and transmission in this tower are more complex than regular towers with the leg comprising only one tube. Axial force distribution and deviation in the built-up columns were studied under 45°, 60° and 90° wind. Then, under the control load case, the layout and stiffness variation of the CBs in the joint zone was analyzed. Results indicated that with the increase of the CBs' stiffness, the percentage of axial force unevenness and total stress unevenness in the built-up column decreased. To meet the requests of both economy and mechanical performance, section dimensions of the CBs with triple linear stiffness to QSTC’s were recommended.

Keywords:

transmission tower; built-up column; mechanical performance; finite element analysis; steel tubes; connecting beams

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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