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JP2005171645A Reinforcing method of overhanging beam section of reinforced concrete viaduct 审中-公开
标题翻译：加固混凝土梁的加强梁加固方法
公开(公告)号：JP2005171645A
公开(公告)日：2005-06-30
申请号：JP2003414075
申请日：2003-12-12
申请人： Kajima Corp , 鹿島建設株式会社
发明人： SEKI MASAKI , MOTOKISAWA TOMONORI , INAGUMA HIROSHI , ROKUGO SHIGEAKI , KUNIEDA MINORU , SUDA KUMIKO , SAKATA NOBORU , KANDA TETSUSHI
IPC分类号： E01D22/00 , E01D101/00
摘要： PROBLEM TO BE SOLVED: To provide a spraying reinforced material having the same inorganic system as that of a concrete skeleton capable of holding the integrity with the skeleton, obtaining the bending reinforced effective like in the case tension reinforcement is increased by using a fiber reinforced cement composite material of the reinforced material having at least traction yield strength 3.6 (MPa) and 0.5% or above of end elongation, reducing a reinforced cost for enabling the influence of self-weight to lighten, thinning down the increased thickness since area of reinforcement is decreased and increasing durability against an external deterioration factor since the width of flexural crack becomes very small.
SOLUTION: The roughening treatment is applied to the surface of concrete of the lower face of an overhanging beam section 22 of a reinforced concrete viaduct 21 so that the interfacial bond strength can become at least 1.5 N/mm
2 . Alternatively, the existing reinforcement 14 is chipped, and the high ductile fiber reinforced cement composite material (high ductile FRC material) 15 having at least traction yield strength 3.6 (MPa) and 0.5% or above of end elongation is sprayed thereon. Accordingly, maintenance expenses can be reduced.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供具有与骨架完全一致的混凝土骨架相同的无机系统的喷涂增强材料，通过使用增强材料的纤维增强水泥复合材料至少具有3.6（MPa）的牵引屈服强度和0.5％或以上的伸长率，降低了自重减轻的影响的增强成本，减小了区域增加的厚度由于挠曲裂纹的宽度变得非常小，所以增强的增强力减小并且增加了对外部劣化因子的耐久性。解决方案：将粗化处理应用于钢筋混凝土高架桥21的悬垂梁部分22的下表面的混凝土表面，使得界面粘合强度可以变得至少为1.5N / mm 2， / SP>。或者，现有的加强件14被切削，并且至少具有3.6（MPa）的牵引屈服强度和0.5％以上的伸长率的高韧性纤维增强水泥复合材料（高韧性FRC材料）15。因此，可以降低维护费用。版权所有（C）2005，JPO＆NCIPI

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