Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Complete closed-type carbon fiber-reinforced polymer stirrups with a rectangular section (CFRPRS) were developed and tested in the research reported in this paper. The use of a CFRPRS is intended to relieve stress concentrations and reduce the number of kinked fibers at the bent portion. A total of 16 B.5 specimens were tested with consideration of the bend strength of the CFRPRS as well as carbon fiber-reinforced polymer (CFRP) stirrups with circular sections. Observations were made regarding the bend strength and failure modes. Three different types of CFRPRS were tested with different width-thickness ratios (34.4 for a sectional area of 27.9 mm2 and 4.5 or 8.0 for 72 mm2) and three different ratios of the bend radius to the area-equivalent bar diameter (1.5, 3.0, and 4.5). The test results indicated that CFRPRSs exhibited improved bend strength as compared to its counterpart, the conventional CFRP stirrups with circular sections. CFRPRSs possessing a larger stirrup width-thickness ratio provided more strength for a given sectional area. The best correlation between the test results and predictions of the CFRPRS bend strength was observed when sections of the CFRPRS were modeled as a collection of transformed individual circular sections.
Complete closed-type carbon fiber-reinforced polymer stirrups with a rectangular section (CFRPRS) were developed and tested in the research reported in this paper. The use of a CFRPRS is intended to relieve stress concentrations and reduce the number of kinked fibers at the bent portion. A total of 16 B.5 specimens were tested with consideration of the bend strength of the CFRPRS as well as carbon fiber-reinforced polymer (CFRP) stirrups with circular sections. Observations were made regarding the bend strength and failure modes. Three different types of CFRPRS were tested with different width-thickness ratios (34.4 for a sectional area of 27.9 mm2 and 4.5 or 8.0 for 72 mm2) and three different ratios of the bend radius to the area-equivalent bar diameter (1.5, 3.0, and 4.5). The test results indicated that CFRPRSs exhibited improved bend strength as compared to its counterpart, the conventional CFRP stirrups with circular sections. CFRPRSs possessing a larger stirrup width-thickness ratio provided more strength for a given sectional area. The best correlation between the test results and predictions of the CFRPRS bend strength was observed when sections of the CFRPRS were modeled as a collection of transformed individual circular sections.
Bend strength of complete closed-type carbon fiber-reinforced polymer stirrups with rectangular section
Biegefestigkeit vollständig geschlossener kohlefaserverstärkter Polymer-Bügel mit rechteckigem Querschnitt
Journal of Composites for Construction ; 18 ; 04013022/1-04013022/11
2014
11 Seiten, 9 Bilder, 3 Tabellen, 18 Quellen
Aufsatz (Zeitschrift)
Englisch
| British Library Online Contents | 2014
Shear Capacity of RC Beams with Carbon Fiber-Reinforced Polymer Stirrups with Rectangular Section
| Online Contents | 2015