碳纤维加固混凝土柱抗剪承载力计算方法比较  

Comparison of Calculation Methods of Shear Capacity of RC Columns Strengthened with CFRP

作　　者：余琼[1] 聂琳[1] 

机构地区：[1]同济大学结构工程与防灾研究所,上海200092

出　　处：《结构工程师》2007年第5期93-98,共6页Structural Engineers

摘　　要：从已有的试验数据出发,考察CECS146:2003《碳纤维片材加固修复混凝土结构技术规程》和GB 50367—2006《混凝土结构加固设计规范》所提供碳纤维环向缠绕加固混凝土柱抗剪承载力计算公式与试验结果的吻合程度,结果表明二者所提供的抗剪承载力计算方法都基本能够满足工程要求,后者的计算结果和试验值的吻合程度较好,而前者较为保守,在实际工程中,当轴压比不变时,剪跨比对前者的影响大;对于非短柱(剪跨比>2),轴压比对后者的影响大。二次受力会降低构件的抗剪承载力。Calculating results, obtained by using the methods provided in the ＂Technical specification for strengthening concrete structures with carbon fiber reinforced polymer laminate＂ （ CECS146：2003 ） and ＂Design code for strengthened concrete structures＂ （ GB50367 - 2006 ） , were compared with the existing experimental results. As a conclusion, the both methods can satisfy the need of engineering, while the latter is better. The former is great influenced by the axial compression ratio with the shear - span ratio greater than 2, while the latter is great influenced by the shear-span ratio with the same axial compression ratio . Secondary load will reduce the shear capacity.

关 键 词：碳纤维 环向缠绕加固 轴压比 剪跨比 

分 类 号：TU377[建筑科学—结构工程]