（1 长江都市建筑设计股份有限公司，南京 210002；2 东南大学土木工程学院，南京 210096；3 南京工业大学土木工程学院，南京 210009）

［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。

［关键词］GFRP条带; RC双向板; 破坏形态; 变形性能; 极限承载力

中图分类号：TU375.2       文献标识码：A       文章编号：1002-848X(2014)11-0061-04

Experimental study of RC two-way slabs strengthened with externally bonded GFRP strips

Han Baoquan1, Cao Shuangyin2, Guo Zhanggen3

（1 Yangtze River Urban Architectural Design Co., Ltd., Nanjing 210002, China; 2 Civil Engineering College of Southeast University, Nanjing 210096, China; 3 Civil Engineering College of Nanjing Technology University, Nanjing 210009, China)

Abstract: 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.

Keywords: GFRP strip; RC two-way slab; failure mode; deformation property; ultimate bearing capacity

作者简介：韩葆铨，高级工程师，Email:hanbaoquanqq@163.com。

参考文献

［1］曹双寅, 滕锦光, 邱洪兴，等. 外贴纤维复合材料加固RC悬臂板的实验研究及简化计算［J］. 土木工程学报, 2001,34(1): 39-43.

［2］曹双寅, 滕锦光, 邱洪兴, 等. 外贴纤维加固梁斜截面纤维应变分布的试验研究［J］. 土木工程学报,2003,36（1）: 6-11.

［3］AYMAN S MOSALLAM. Strengthening of two-way concrete slabs with FRP composite laminates［J］. Conctruction and Building Material, 2003(17): 339-350.

［4］张继文. 外贴FRP、钢薄板或条带加固钢筋混凝土双向板的研究［D］. 南京: 东南大学, 2000.

［5］韩葆铨. GFRP条带加固RC双向板的静载试验研究及理论分析［D］. 南京:东南大学, 2005.

［M］.北京：高等教育出版社，2006.