Design Module for Self-Supporting Steel Latticed Communication Towers
No Thumbnail Available
Date
2018-10
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Ababa University
Abstract
Self-supporting towers are one of the most essential and common steel structures which
are being constructed quite frequently to provide a better facility in communication
network to the people. Hence, the failure of such a structure is a major concern. Therefore,
utmost priority must be given in considering all possible extreme conditions for designing
communication towers, by evaluating and studying their wind and seismic behaviors
properly.
In this study, concepts behind codes specifications in relation with, equal angle steel
section used as structural members in communication towers and communication tower
itself, have been investigated thoroughly, so that they can be referred as a principles for
analysis and design.
In this research, wind and seismic behavior of self-supporting steel latticed communication
towers have been studied for 35 m/s, 40 m/s, 45 m/s, and 50 m/s wind speed, in five
different seismic zones, by analyzing different height of bare towers with XX bracing
system. Moreover, charts for specified wind speeds and seismic zones which can be used
as preliminary design for communication towers has been developed. These charts shows
the responses of towers with different heights, wind speeds and seismic loads in different
loading directions.
In addition to that, step by step design procedure and design of articulated modular self
supporting steel latticed tower is presented with the help of algorithm and flowchart by
using recommended allowable strength design codes specifications, in relation with
analyzing and designing of steel communication tower.
Finally, the design module is prepared in a way that it can be used as a Guide line in
designing and analyzing the effect of wind load and seismic load on the steel latticed
communication towers.
Description
Keywords
Self-Supporting Communication Tower, Wind Load, Seismic Zone, Allowable Strength Design