碳纤维布抗剪加固钢筋混凝土梁设计计算方法  

Design Approach for Computing Contribution of Externally Bonded CFRP Sheets to Shear Capacity of RC Beams

作　　者：李松辉[1] 王松根[2] 马庆雷[2] 

机构地区：[1]山东科技大学土建学院,山东青岛266510 [2]山东省交通厅公路局,山东济南250002

出　　处：《公路交通科技》2005年第12期98-100,112,共4页Journal of Highway and Transportation Research and Development

基　　金：山东省交通厅科研资助项目

摘　　要：为完善公路钢筋混凝土桥梁抗剪加固设计理论,针对我国《公路钢筋混凝土及预应力混凝土桥涵设计规范》(JTG D62-2004)的要求,建立了基于Schnerch有效应变模型的抗剪加固梁斜截面受剪承载力计算方法,设计参数包括混凝土强度等级、斜截面内箍筋配筋率、碳纤维布加固率、粘贴形式及碳纤维布粘贴角度等。计算值与试验值的对比结果表明,所提抗剪加固计算公式具有较强的实用性和较高的可靠性,可用于公路钢筋混凝土桥梁的抗剪加固设计。The objective of this paper is to improve and validate a new design approach for shear strengthened RC beams with externally bonded CFRP sheets. According to the code for design of highway reinforced and prestressed concrete bridges and culverts （JTG D62- 2004）, a new simple shear design approach is developed based on the effective strain model presented by Schnerch （2001）. The variables investigated in this model included concrete compressive strength, steel stirrups, as well as amount and distribution of CFRP. The effectiveness of the design approach is then validated by comparing the experimental results with the calculated shear capacity. The results showed that the proposed design approach is highly practical reliable.

关 键 词：钢筋混凝土梁 碳纤维增强复合材料(CFRP) 加固 受剪承载能力 设计方法 

分 类 号：U445.7[建筑科学—桥梁与隧道工程]