- 摘 要
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趙 彤 謝 劍 戴自強
（天津大學土木工程系 300072）[提要] 通過12根碳纖維布補強加固鋼筋混凝土梁的試驗，重點研究碳纖維布對梁抗剪承載力的影響和作用。主要試驗參數(shù)有：碳纖維布的寬度和間距、碳纖維布的粘貼層數(shù)、梁的剪跨比、配箍率和混凝土強度。試驗研究表明，碳纖維布可以明顯地提高鋼筋混凝土梁的抗剪承載力，并改善構件的變形性能，增強構件的變形能力。最后，提出了一個簡化的碳纖維布提高鋼筋混凝土梁受剪承載力的設計計算公式。
[關鍵詞] 碳纖維布 混凝土梁 受剪承載力 補強加固Twelve simply supported beams strengthened by carbon fiber sheet (CFS) are tested. The experimental factors are width and spacing of CFS strips, layers of CFS, shear span/depth ratio, ratio of stirrup, and concrete strength. The experimental results indicate that CFS can evidently increase the shear strength and improve the ductility of these specimens. Based on the test, a simplified design formula is proposed.
Keywonls: concrete beam; carbon fiber sheet;shear strength;strengthening
