FRP-螺栓联合加固RC梁受剪承载能力试验研究

山东大学学报(工学版) ›› 2010, Vol. 40 ›› Issue (2): 82-87.

FRP-螺栓联合加固RC梁受剪承载能力试验研究

管延华1,2,蒋斌松1,宋修广2,杨勇3

1. 中国矿业大学建筑工程学院深部岩土力学与地下工程国家重点实验室, 江苏徐州 221008;
2. 山东大学土建与水利学院, 山东济南 250061;
3. 济南工程职业技术学院建工系, 山东济南 250020

收稿日期:2009-12-09 出版日期:2010-04-16 发布日期:2009-12-09
作者简介:管延华(1969-),男,山东胶南人,博士研究生,讲师,主要研究方向为桥梁工程.E-mail:guanyanhua@sdu.edu.cn
基金资助:
山东省交通厅资助项目(2008Y025)

Experimental study on RC beams strengthened in shear with hybrid bonding of FRP

GUAN Yan-hua1,2, JIANG Bin-song1, SONG Xiu-guang2, YANG Yong3

1. State Key Laboratory for Geomechanics ＆ Deep Underground Engineering, School of Architecture and Civil Engineering,
China University of Mining and Technology, Xuzhou 221008, China;
2. School of Civil Engineering, Shandong University, Jinan 250061, China;
3. Construction Department, Jinan Engineering Vocational Technical Institute, Jinan 250020, China

Received:2009-12-09 Online:2010-04-16 Published:2009-12-09

摘要/Abstract

关键词: FRP, 螺栓, 混合方法, 加固, 抗剪承载力

Abstract:

To definitude the effect of FRP-bolt strengthening technology, and also on the basis of the destructive characteristics of aging RC beam bridges, interior contrast tests of FRP surface adhesion and FRP-bolt hybrid boding were conducted to examine the strengthening effect on RC beams in shear. The results of the EB-FRP and HB-FRP were compared. In particular, the influence of pre-cracking level and FRP strip spacing on RC beams strengthened in shear with the hybrid bonding of FRP were assessed. The experimental results show that the hybrid bonding of FRP is a more reliable strengthening technique and which can improve the shear capacity of beams. The new mechanical fastening technique does not rely on bearings to transmit the interfacial shear, but instead increases the interfacial bond by resisting the separation of the FRP laminate from the concrete substrate by the bolt pretension. This study helps to direct the design and the construction of the HB-FRP.

Key words: fiber reinforced polymer (FRP), screw bolt, hybrid methods, strengthening, shear capacity

管延华1,2,蒋斌松1,宋修广2,杨勇3. FRP-螺栓联合加固RC梁受剪承载能力试验研究[J]. 山东大学学报(工学版), 2010, 40(2): 82-87.

GUAN Yan-hua1,2, JIANG Bin-song1, SONG Xiu-guang2, YANG Yong3. Experimental study on RC beams strengthened in shear with hybrid bonding of FRP[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2010, 40(2): 82-87.

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