摘要
先通过预张玻璃钢板(Glass-Fibre-Reinforced-Polymer,简称GFRP)粘贴于混凝土梁受拉面,后在梁侧面用GFRP板进行剪切补强试验;分析了不同侧面贴GFRP方式对加固梁抗剪性能和破坏模式的影响,比较了各试验梁的跨中挠度、力筋和GFRP板应变的关系。试验结果表明,侧面贴GFRP可有效抑制斜裂缝的出现,提高试验梁的抗剪能力,改变其破坏形态,加固效果比较理想。
After prestressed Glass-Fibre-Reinforced-Polymer （GFRP） plates were bonded on the tension face of RC beams, two distributing kinds of GFRP plates were bonded on the sides of the beams to improve shear capacity of RC beams. The pretress technology was described before results obtained during the application and release of the prestress, and subsequently four bending monotonic testing to failure was presented. Experimental data on strength, steel strain, GFRP strain, deflection, failure modes, and crack modes of beams were obtained, and comparisons between the different shear repair schemes and the unrepaired control beams are made. Experimental results indicate that GFRP bonded on the sides can restrict the propagation of shear crack, and failure mode is changed.
出处
《四川建筑科学研究》
北大核心
2005年第5期46-49,共4页
Sichuan Building Science
基金
河南省自然科学基金项目(004041700)
铁道部科技计划项目(02G043)
