Design, Fabrication, and Construction of Static-Cast Concrete Poles Reinforced with GFRP
Publication: Practice Periodical on Structural Design and Construction
Volume 22, Issue 4
Abstract
Concrete poles used in transmission structures usually are made using the spun-cast method. Recent surveys found that some spun-cast concrete poles have had durability problems as a result of longitudinal cracking and concrete segregation, which have resulted in corrosion of the reinforcing/prestressing steel. An innovative static-cast concrete pole system was developed to eliminate the shortfalls of spun-cast concrete poles. These poles have a nonprismatic hexagonal hollow section, made of fiber-reinforced self-consolidated concrete (SCC), and are reinforced longitudinally using glass fiber–reinforced polymer (GFRP) bars. The static-cast operation and use of nonmetallic reinforcement make these poles corrosion free and significantly reduce their lifecycle cost. The objective of this paper is to present the design, production, testing, and implementation of the proposed static-cast concrete poles. Testing results indicate that the flexural capacity, shear capacity, and deflection of the proposed static-cast concrete poles can be predicted accurately using existing approaches. The experience of implementing this approach for two poles gives an indication of the constructability of the proposed system and its ease of handling using the same equipment and procedures adopted for conventional poles.
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Acknowledgments
The authors thank Superior Concrete Products for fabricating pole specimens for testing and a full-scale pole for field application. Also, the technical support of Omaha Public Power District and their pole-installation crews is highly appreciated.
References
ACI (American Concrete Institute). (2011). Building code requirements for structural concrete and commentary, Farmington Hills, MI.
ACI (American Concrete Institute) Committee. (2006). “Guide for the design and construction of structural concrete reinforced with FRP bars.” ACI 440.1R, Farmington Hills, MI.
ANSI (American National Standards Institute). (2008). “American national standards for wood poles and wood products.” ANSI O5.1, Specifications & Dimensions, New York.
Barbosa, P., Helene, P., and Pereira, M. F. (2006). “Centrifugally-cast concrete posts.” Concr. Int., 28(06), 53–57.
Carvalho, C. (2007). “Static-cast concrete poles with non-metallic reinforcement.” M.Sc. thesis, Univ. of Nebraska, Lincoln, NE.
Chahrour, A. H., and Soudki, K. A. (2006). “Structural retrofitting of deteriorated concrete lighting poles using FRP sheets in wet layup—Field application.” J. Compos. Constr., 234–243.
Dilger, W. H., and Krishna Mohan Rao, S. V. (1997). “High performance concrete mixtures for spun-cast concrete poles.” PCI J., 42(4), 82–96.
Dilger, W. H., Ghali, A., and Krishna Mohan Rao, S. V. (1996). “Improving the durability and performance of spun-cast concrete poles.” PCI J., 41(2), 68–90.
Dittmar F., and Bahous H. (2011). “Spun pre-stressed concrete poles: Alternative to wooden and steel poles for low, medium, and high voltage.” Proc., 21st Int. Conf. on Electricity Distribution.
Fam, A. Z., Kong, A., and Green, M. F. (2008). “Effects of freezing and thawing cycles and sustained loading on compressive strength of precast concrete composite piles.” PCI J., 53(1), 109–120.
Fam, A. Z., and Rizkalla, S. (2001). “Behavior of axially loaded concrete-filled circular fiber-reinforced polymer tubes.” ACI Struct. J., 98(3), 280–289.
Fam, A. Z., and Rizkalla, S. (2002). “Flexural behavior of concrete-filled fiber-reinforced polymer circular tubes.” J. Compos. Constr., 123–132.
Fouad, F. H., Scott, N. L., Calvert, E., and Donovan, M. (1994). “Performance of spun prestressed concrete poles during Hurricane Andrew.” PCI J., 39(2), 102–110.
Fouad, F. H., Sherman, D., and Werner, R. J. (1992). “Spun prestressed concrete poles—Past, present, and future.” Concr. Int., 14(11), 25–29.
Hughes Brothers, Inc. (2015). “Why use fiberglass rebar?” 〈http://aslanfrp.com/fiberglassrebar.html〉 (May 7, 2015).
Lorimor, A. L., (2003). “An innovative static cast high performance concrete pole system,” M.Sc. thesis, Univ. of Nebraska, Lincoln, NE.
PCI Committee on Concrete Poles and ASCE Task Force. (1997). “Guide for the design of prestressed concrete poles.” PCI J., 42(6), 94–134.
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© 2017 American Society of Civil Engineers.
History
Received: Jan 23, 2017
Accepted: Mar 15, 2017
Published online: May 19, 2017
Discussion open until: Oct 19, 2017
Published in print: Nov 1, 2017
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