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Optimizing the ultimate strength of precast reinforced concrete pipes in three‐edge bearing tests
Author(s) -
Chao LiChung,
Kuo ChiangPin
Publication year - 2018
Publication title -
structural concrete
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.912
H-Index - 34
eISSN - 1751-7648
pISSN - 1464-4177
DOI - 10.1002/suco.201700143
Subject(s) - precast concrete , taguchi methods , structural engineering , orthogonal array , enhanced data rates for gsm evolution , materials science , maximization , reinforcement , composite material , engineering , mathematics , telecommunications , mathematical optimization
By utilizing Taguchi method, this paper presents a simplified approach that aims at developing technical recommendations of control factors of reinforcement and concrete for steel wire reinforced concrete pipes (SWRCP). For this purpose, the structural behaviors of full scale of 400 and 600 mm inside diameter SWRCPs were analyzed. Three control factors, namely wire diameter ( d w ), wire winding pitch ( p w ), and water/cement ratio of concrete (w/c of concrete) were designed in an L 9 orthogonal array. The best possible levels were determined for maximization of crushing load ( F cr ) and ultimate load ( F u ) in three‐edge bearing tests and minimization of crack width ( W cr ). Based on the results, the economical and optimal control factors of d w , p w, and w/c of concrete for SWRCPs with inside diameter of 400 mm are 6.5 mm, 100 mm, and 33.5%, respectively. For SWRCPs with inside diameter of 600 mm, the optimal control factors of d w , p w, and w/c of concrete are 6.5 mm, 33 mm, and 33.5%, respectively. In addition, by the use of analysis of variance, the contribution percentages of control factors were obtained and were used as the most effective factors on the F cr , F u , and W cr for SWRCPs. Through the implementation of the study, this paper concludes a practical and significant overall idea of designing SWRCPs for pipe manufacturing industry.