ŒfÚŽGŽi˜ajF “y–ØŠw‰ï˜_•¶W V ŠªF -Šª †F 360/V-3† •ÅF 119-128•Å ”NF 1985”N ŒŽF 8ŒŽ ’˜ŽÒi˜ajF ”öâ–F•v,—é–ØŠîs,Γc”ŽŽ÷,‰Á“¡Ÿ”ü ƒ^ƒCƒgƒ‹i˜ajF RC‚΂è‚Ì‚¹‚ñ’f”j‰ó‚Æ•âC–@‚ÉŠÖ‚·‚錤‹† ´˜^i˜ajF
–{Œ¤‹†‚Í, ‹{錧‰«’nk‚Å”íŠQ‚ðŽó‚¯‚½RCƒ‰[ƒƒ“’†‘w‚΂è‚ð‘ÎÛ‚É, ŠeŽí•âC•û–@‚ÌŒø‰Ê‚ðŽÀŒ±“I‚É’²‚ׂ½‚à‚Ì‚Å‚ ‚é. “Á‚É‹È‚°‚¹‚ñ’f”j‰ó‚ɑ΂·‚éƒGƒ|ƒLƒVŽ÷Ž‰’“ü‚Ì•âCŒø‰Ê‚ðRC‚΂è‚ð—p‚¢, ‚Ђтí‚ê•‚ ‚é‚¢‚͕ψʂðŽÚ“x‚Æ‚µ‚Ä’²‚ׂ½. ‚»‚ÌŒ‹‰Ê, ‚Ђтí‚ê•”‚ɃGƒ|ƒLƒVŽ÷Ž‰‚ð’“ü‚µ•âC‚·‚ê‚Î, ‚Ù‚Ú”j‰óƒŒƒxƒ‹‚É‚Ü‚Å’B‚µ‚½•”Þ‚Å‚à‘ϗ͂₶‚ñ«‚ªŒ³’Ê‚è‰ñ•œ‚µ, Žg—p‰Â”\‚ƂȂ邱‚Æ‚ªŠm”F‚Å‚«‚½. ƒL[ƒ[ƒhi˜ajF - ŒfÚŽGŽi‰pjF JOURNAL OF MATERIALS,CONCRETE STRUCTURES AND PAVEMENTS ’˜ŽÒi‰pjF ƒ^ƒCƒgƒ‹i‰pjF STUDY ON SHEAR FAILURE AND REPAIR METHOD OF REINFORCED CONCRETE BEAM ´˜^i‰pjF
Reinforced concrete viaducts of the Tohoku Shinkansen suffered considerable damage especially in mid-height beams due to the Miyagi-ken-oki Earthquake (1978), and there were quite a number that would not have been able to withstand normal use without remedy. In this study the strength-deformation characteristics of 1/2- or 1/3-scale model specimens of rigid-frame viaduct mid-height beams are obtained experimntally, and the bending shear characteristics of mid-height beams are examined. Further, various repair methods are applied to specimens loaded to different levels with crack width or displacement as the yardstick, and the effect are investigated. As a result, it is confirmed that member yielding load, resistance, deformation performance, etc., are not less than those of the original member if repaired properly by injecting epoxy resin in cracked parts. ƒL[ƒ[ƒhi‰pjF - ‹LŽ–‹æ•ªF “Še˜_•¶ ‹æ•ª @@@@˜_•¶W