建筑结构

2006, v.36(S1) 608-611

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纤维塑料筋部分预应力混凝土梁延性性能试验研究
Experimental Study on Fiexural Ductility for Partially Prestressed Concrete Beams with FRP Tendons

孟履祥;陶学康;徐福泉;关建光;
Meng L(u|¨)xiang,Tao Xuekang,Xu Fuquan,Guan Jianguang (Institute of Structure,China Academy of Building Research, Beijing 100013,China)

摘要(Abstract):

通过10根芳纶纤维筋有粘结部分预应力混凝土梁和8根碳纤维筋无粘结部分预应力混凝土梁的静载试验,研究了混合配置纤维塑料预应力筋及环氧涂层普通钢筋的部分预应力混凝土梁的延性性能,实测了位移延性系数μ_△、曲率延性系数μ_Φ,以及耗能比例系数μ_(in);并以综合配筋指标β_0和预应力度λ为变量,研究其对上述纤维塑料筋有粘结及无粘结部分预应力混凝土梁的位移延性、曲率延性和耗能能力的影响规律。试验证明,这种混合配筋梁具有较好的延性性能及能量耗散能力。
The experimental study on the flexural ductility of partially prestressed concrete beams with FRP tendons and epoxy coated steel bars,including 10 beams prestressed with bonded AFRP tendons and 8 beams prestressed with unbonded CFRP tendons,is presented.The deflection ductility,the curvature ductility,and the energy dissipation capacity were measured,and their changing relations were influenced by the composite reinforcing index β_0 and partially prestressed ratio λ respectively.The results of the tests show that the ductility and the energy dissipation capacity of PPC beams with FRP tendons are favorable.

关键词(KeyWords): 纤维塑料筋;环氧涂层钢筋;部分预应力混凝土;粘结;位移延性;曲率延性;耗能比例系数
fiber reinforced polymer tendons;epoxy coated steel bars;partially prestressed concrete;bonded;deflection ductility;curvature ductility;index of energy dissipation

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作者(Author): 孟履祥;陶学康;徐福泉;关建光;
Meng L(u|¨)xiang,Tao Xuekang,Xu Fuquan,Guan Jianguang (Institute of Structure,China Academy of Building Research, Beijing 100013,China)

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DOI: 10.19701/j.jzjg.2006.s1.142

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