摘要
对跨中局部荷载作用下采用GFRP条带加固的RC双向板进行了试验研究，并详细分析了试件的破坏形态、承载能力、刚度、荷载-钢筋应变关系和荷载-纤维应变关系。试验结果表明：采用GFRP条带加固RC双向板可以改善板的抗裂和变形性能，且加固后板的极限承载力提高幅度达8％-15％。试验数据为后续理论分析提供了可靠的试验依据。最后，推导出局部荷载作用下粘贴GFRP加固RC双向板的极限承载力计算公式。
The experimental study of RC two-way slabs strengthened with externally bonded glass fiber reinforced polymer （GFRP） strips under mid-span locally distributed load was carried out. The failure modes, bearing capacity, stiffness, load-steel strain relationship and load-GFRP strain relationship of the specimen were carefully studied. The results show that the anti-cracking behavior and deformation behavior of RC two-way slabs strengthened with externally bonded GFRP strips are both improved, and the ultimate bearing capacity of reinforced slabs can increase up to 8% - 15%. The experimental data provide a reliable test basis for subsequent theoretical analysis. Finally, the ultimate bearing capacity formula of RC two-way slabs strengthened with externally bonded GFRP strips under mid-span locally distributed load was derived.
出处
《建筑结构》
CSCD
北大核心
2014年第11期61-64,共4页
Building Structure
