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Computer-aided optimal design of prestressed concrete masts
Bharath S.K. Reddy,
Published in
2003
Volume: 77
   
Issue: 6
Pages: 1117 - 1122
Abstract
Prestressed concrete masts provide an economically viable alternative to steel masts for lighting and communication towers. The tubular section of the mast has to be optimally designed to resist the bending moment due to lateral load (predominantly wind) in combination with axial compression due to self weight. To facilitate this, interaction curves need to be generated at service and ultimate loads, as indicated in the paper. A software has been developed, in which the design program is linked with an optimisation program to optimise the basic cost of the mast. A genetic algorithm procedure has been used for this purpose. Application of the software to single-tube and three-tube PSC masts reveals that the single-tube mast is economical for heights up to 50 m, beyond which the three-tube mast provides a more economical alternative. Some practically useful results of single-tube optimal mast sections are presented. Additional details regarding the connections in the three-tube masts and cost comparison with steel masts have not been included in the study.
About the journal
JournalIndian Concrete Journal
ISSN00194565
Open AccessNo
Concepts (11)
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    Bending moments
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    Computer aided design
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    Dynamic loads
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    Genetic algorithms
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    Optimization
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    Prestressed concrete
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    PRESTRESSED CONCRETE MASTS
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    SERVICE LOADS
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    TUBULAR SECTION
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    ULTIMATE LOADS
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    RADIO TOWERS