Œf�ÚŽGŽ��i˜a�j�F “y–ØŠw‰ï˜_•¶�W V Šª�F -Šª �†�F 360/V-3�† •Å�F 119-128•Å ”N�F 1985”N ŒŽ�F 8ŒŽ ’˜ŽÒ�i˜a�j�F ”ö�â–F•v,—é–ØŠî�s,�Γc”ŽŽ÷,‰Á“¡�Ÿ”ü ƒ^ƒCƒgƒ‹�i˜a�j�F RC‚΂è‚Ì‚¹‚ñ’f”j‰ó‚Æ•â�C–@‚ÉŠÖ‚·‚錤‹† �´˜^�i˜a�j�F
–{Œ¤‹†‚Í, ‹{�錧‰«’n�k‚Å”íŠQ‚ðŽó‚¯‚½RCƒ‰�[ƒ�ƒ“’†‘w‚΂è‚ð‘Î�Û‚É, ŠeŽí•â�C•û–@‚ÌŒø‰Ê‚ðŽÀŒ±“I‚É’²‚ׂ½‚à‚̂ł ‚é. “Á‚ɋȂ°‚¹‚ñ’f”j‰ó‚ɑ΂·‚éƒGƒ|ƒLƒVŽ÷މ’�“ü‚Ì•â�CŒø‰Ê‚ðRC‚΂è‚ð—p‚¢, ‚Ђтí‚ê•�‚ ‚é‚¢‚͕ψʂðŽÚ“x‚Æ‚µ‚Ä’²‚ׂ½. ‚»‚ÌŒ‹‰Ê, ‚Ђтí‚ê•”‚ɃGƒ|ƒLƒVŽ÷މ‚ð’�“ü‚µ•â�C‚·‚ê‚Î, ‚Ù‚Ú”j‰óƒŒƒxƒ‹‚ɂ܂ŒB‚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��[ƒh�i˜a�j�F - Œf�ÚŽGŽ��i‰p�j�F JOURNAL OF MATERIALS,CONCRETE STRUCTURES AND PAVEMENTS ’˜ŽÒ�i‰p�j�F ƒ^ƒCƒgƒ‹�i‰p�j�F STUDY ON SHEAR FAILURE AND REPAIR METHOD OF REINFORCED CONCRETE BEAM �´˜^�i‰p�j�F
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��[ƒh�i‰p�j�F - ‹LŽ–‹æ•ª�F “Š�e˜_•¶ ‹æ•ª �@�@�@�@˜_•¶�W