粘钢加固梁粘结锚固性能的试验研究及建议  

EXPERIMENTAL STUDY AND SUGGESTION OF THE BONDING PROPERTY OF REINFORCED CONCRETE BEAMS STRENGTHENED BY BONDING STEEL PLATE

作　　者：曹双寅[1] 孙永新 朱海峰[1] 翟瑞兴[1] 徐俊 

机构地区：[1]东南大学,南京210096 [2]常州市房屋安全鉴定所,常州213000

出　　处：《工业建筑》2000年第2期4-7,共4页Industrial Construction

摘　　要：通过对１６ 根外部粘钢加固钢筋混凝土梁正截面受弯和斜截面受剪的试验观察，分析研究了粘钢加固梁的破坏特征和粘结锚固性能，试验结果表明：仅具有足够的锚固长度，虽可以保证外贴钢板与构件的共同工作，发挥钢板的强度，但构件的延性较差，钢板与混凝土交接面易产生破坏，导致钢板脱落。由于钢板与构件间不仅存在着切向的剪应力，同时由于构件的弯曲作用，还存在着径向的正应力，因此在粘钢加固设计时，不仅要保证足够的锚固长度，尚应采取附加措施，避免在径向正应力的作用下产生破坏。Through the test of 16 reinforced concrete beams strengthened by bonding steel plate,the failure characters and bonding properties have been analyzed.The experimental results showed that,although the sufficientanchor length can make steel plate and the components work together,they have less ductility,the bondingsurfaceiseasytofail which makesthe steelplate fall.Because existin the bonding surface not only the tangentialshearstress butalso theradialnormalstress duetothe bending,soin the design ofthosecomponents, besidesthesufficient anchorlength ,the additionalstep must be taken to avoid the failure caused by the radial normalstress.

关 键 词：钢筋混凝土梁 粘钢加固 试验研究 锚固 

分 类 号：TU391[建筑科学—结构工程]