摘要
进行了 1 3根玻璃纤维 (GFRP)片材加固混凝土梁和 2个对比混凝土梁的抗剪性能试验研究 ,分析了GFRP加固梁的抗剪性能。试验结果表明 ,粘贴GFRP片材可以有效地提高梁的抗剪承载力 ,GFRP片材的受力机理和箍筋相同 ,加固梁的抗剪承载力取决于GFRP片材的有效应变。根据试验结果 ,提出了GFRP片材有效应变的计算公式 ,并依据混凝土规范的计算模型 。
Thirteen concrete beams strengthened with GFRP sheet and two beams for comparison have been tested.The results show that the contribution of GFRP sheet to shear capacity is same as steel stirrups,and the shear capacity depends on the effective strain of GFRP sheet.The effective strain of GFRP sheet decreases with increasing GFRP sheet axial rigidity.Based on the experimental results,an analytical model for the effective strain of GFRP sheet is developed,and a calculated method for the shear capacity with the framework of modern code formats is presented.
出处
《建筑结构》
CSCD
北大核心
2002年第10期46-49,共4页
Building Structure
基金
福建省科委工业基金重点课题 (98 Z 3 5 )
福建省建委课题 (JK 99 10 )
