高強度繊維補強モルタルとネジ節鉄筋で接合したプレキャストPC床版の耐疲労性試験

抄録

The objective of this study is to investigate the fatigue resistance of a slab system consisting of precast PC slabs and a novel joint system consisting of high-strength fiber reinforced mortar and screw-type rebar. The fatigue resistance is assessed through a wheel load test, initially designed to comply with the NEXCO 442 test method to ensure a 100-year service life; subsequently, the test has been extended to further verify fatigue resistance at higher repetitions, higher loads and in wet conditions. The results demonstrate that the slab system's fatigue life largely surpasses 100 years. Furthermore, comprehensive post-test investigation confirmed that no significant or localized damage occurred to either the joint system or the slab during the test.