- 摘 要
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(東南大學(xué)混凝土與預(yù)應(yīng)力混凝土結(jié)構(gòu)教育部重點實驗室 南京 210096)
【提要】介紹了兩榀兩層兩跨鋼筋混凝土框架模型在低周反復(fù)水平加載下的試驗過程和試驗結(jié)果，其中一榀作為對比試件，另一榀在梁柱端部用碳纖維布進(jìn)行了加固。試驗結(jié)果表明，梁柱端部加固后，框架的水平承載能力、位移延性和耗能能力都得到了提高。適當(dāng)選擇加固長度，可以實現(xiàn)塑性鉸和破壞位置的轉(zhuǎn)移。
【關(guān)鍵詞】 鋼筋混凝土框架 碳纖維 加固 承載能力 延性
Experimental Study on RC Frame Strengthened with CFRPs in the End Sections of Be
ams and Columns/Jiang Weiguo,Chen Zhongfan,Cheng Wenrang(Key Laboratory
of Concrete and Prestressed Concrete Structures,Ministry of Education,South Eas
t University,Nanjing 210096,China)
Abstract:The experimental schemes and results of two RC frame models with two s
pans and two levels under static cycle horizontal loads are reported. One of the
frame models serves as the control specimen,and the other is strengthened
in the end sections of the beams and columns with CFRPs. The experimental result
s show that the horizontal load capacity,the displacement ductility and the cap
acity of energy dissipation of the strengthened specimen are improved. An approp
riate strengthened length can shift the plastic incursions and failure sections.
Keywords:RC frame; Carbon Fiber Reinforced Polymer (CFRP); strengthening; load capacity; ductility
