臺灣博碩士論文加值系統

本研究之目的在探討鋼筋混凝土梁利用碳纖維複合物(CFS)進行剪力補強後之結構行為。在CFS複合物剪力補強行為中，影響整個補強效應的因素除了CFS本身之拉力強度外，CFS複合物與混凝土間之黏裹強度及錨定與配置型式對補強後梁之結構行為扮演相當重要的角色。有鑑於此，本研究分別對CFS之轉折黏裹強度及補強梁之剪力進行試驗與分析。根據CFS轉折黏裹試驗結果，轉折黏裹的轉折角度與黏裹長度越大則單位寬度黏裹強度越高，而由黏裹長度之增加所達到強度遞增速率與黏裹長度成反比。以CFS補強鋼筋混凝土梁之剪力強度時，試驗結果顯示貼片補強的效果及破壞模式與所設計黏貼型式有密切關係。以密集條狀CFS複合物黏貼剪力面進行補強，可增加黏裹面積又能避免剝離現象之擴散，達到剪力補強之目的，使鋼筋混凝土梁產生具韌性的彎矩破壞。

The purpose of this research work was to study the shear strengthening of R.C. beams using Carbon Fiber Sheet (CFS) composites. An additional experimental work was carried out to study the anchorage strength provided by out of plane contact surface. The test results indicated the anchorage strength per unit width of contact surface increased with out of plane angle and the contact length. Large increment in strength per unit contact length was observes when the contact length was short. When the CFS composites were used to strengthening the shear capacity of RC beams,the results were highly affected by the arrangement of CFS,including location, shape and direction of carbon fiber. Closely arranged strip type CFS will provide large contact surface and curtail the spread of separation between CFS and concrete at the same times.