A case study on the feasibility of using static-cast fibre-reinforced concrete electric poles fully reinforced with glass fibre reinforced polymer bars and stirrups

被引:23
作者
Shakiba, Milad [1 ]
Ahmadi, Hassan [1 ]
Mortazavi, Seyed Mohammad Reza [1 ]
Bazli, Milad [2 ,3 ]
Azimi, Zahir [4 ]
机构
[1] Shahid Rajaee Teacher Training Univ, Dept Civil Engn, Tehran, Iran
[2] Charles Darwin Univ, Coll Engn IT & Environm, Darwin 0801, Australia
[3] Univ Queensland, Sch Mech & Min Engn, Brisbane, Australia
[4] Sharif Univ Technol, Dept Civil Engn, Tehran, Iran
关键词
Electric utility pole; GFRP bar; GFRP stirrup; Full-scale GFRP reinforced Concrete; Static-cast concrete pole; BEHAVIOR; STRENGTH; PERFORMANCE; SEAWATER;
D O I
10.1016/j.rineng.2022.100746
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This study experimentally investigates the structural performance of full-scale reinforced concrete utility poles fully reinforced with glass fibre reinforced polymer (GFRP) bars. The weak bond strength between GFRP bars and concrete in full-scale structures has been addressed by using an innovative anchorage system. Furthermore, fibre -reinforced concrete (FRC) was successfully used to enhance the crack propagations of GFRP-reinforced concrete poles. Three poles were constructed from FRC, while one was constructed with normal concrete (NC) as a benchmark. Polypropylene (PP) and crimped polyolefin-based macro-synthetic (CPO) fibres were used. An innovative anchorage system was used to increase the bond strength between longitudinal bars and the concrete. Crack initiation and pattern, load-carrying capacity and vertical deflections of GFRP reinforced FRC poles were obtained and compared with their normal concrete counterparts. According to the results, the PP-FRC pole showed better crack propagation performance, while the CPO-FRC showed higher stiffness than the normal concrete poles. In addition, regardless of the concrete type, the permanent deformation of all GFRP reinforced concrete poles after different stages of loading were significantly smaller than those of typical steel reinforced concrete poles.
引用
收藏
页数:16
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