基于桁架-拱模型理论对碳纤维布加固混凝土柱受剪承载力的分析

详细信息

SHEAR STRENGTH ANALYSIS OF CONCRETE COLUMN RETROFITTED WITH CFRP SHEET BASED ON STRUT-ARCH MODEL

摘要: 根据文献[1]碳纤维布加固混凝土柱受剪性能的试验研究,结果表明碳纤维布的受力机理与箍筋类似。由于碳纤维布无屈服现象,故达到最大荷载时碳纤维布的应力是确定加固后柱受剪承载力的关键参数。本文基于桁架-拱模型理论对碳纤维布的受力进行了分析,推导出碳纤维布应力的计算公式,计算结果与试验结果吻合较好。
- 碳纤维布 /
- 混凝土柱 /
- 受剪承载力 /
- 桁架-拱模型
Abstract: The experimental investigation of the shear strength of concrete column retrofitted with wrapped CFRP sheet has shown that the CFRP strips behave like stirrups in reinforced concrete members. With no yielding up to its fracture strength of CFRP, the stress of CFRP at the maximum shear loading is found to be the key parameters in determining shear strength of the columns. The strut-arch model is used to study the stress of CFRP at ultimate shear limit state, and a formula is presented. Good agreement is reached between the theoretical predictions and available experimental results.
- carbon fiber reinforced plastic sheet (CFRP sheet) /
- concrete column /
- shear strength /
- strut-arch model