不同轴力下再生混凝土框架抗震性能的试验
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摘要
通过对3榀1∶2比例框架模型(普通混凝土框架1榀,再生粗骨料掺量为100%的再生混凝土框架2榀)在不同的竖向轴压荷载和水平低周反复荷载作用下的抗震性能的对比试验,研究了再生混凝土框架在低周反复荷载作用下的破坏机制、承载力、滞回特性、延性、强度退化、刚度退化和耗能,以及不同轴向力作用对再生混凝土框架抗震性能的影响,并与普通混凝土框架对比分析,对再生混凝土框架结构的整体抗震性能进行评价,从理论上探索再生混凝土和再生混凝土结构的实际应用.试验研究表明,再生混凝土框架具有良好的抗震性能.
A study is conducted on the seismic behaviors of one natural concrete frame and two recycled concrete frames with 100%recycled coarse aggregate whose scales are 1∶2 entirely,and a comparative study is conducted under low reversed cyclic lateral loading and different vertical loading.This work aims to estimate the failure mechanism,hysteresis loops,displacement ductility,deterioration of strength and stiffness and energy dissipation of recycled concrete frames under low-reversed cyclic loading as well as the influence of different vertical loading.Analysis on the basis of the experiment proves that it is entirely feasible to apply recycled concrete to practical engineering for the sake of its good seismic behaviors.This work provides a theoretical basis for a further study and practical application of recycled concrete structure.
A study is conducted on the seismic behaviors of one natural concrete frame and two recycled concrete frames with 100%recycled coarse aggregate whose scales are 1∶2 entirely,and a comparative study is conducted under low reversed cyclic lateral loading and different vertical loading.This work aims to estimate the failure mechanism,hysteresis loops,displacement ductility,deterioration of strength and stiffness and energy dissipation of recycled concrete frames under low-reversed cyclic loading as well as the influence of different vertical loading.Analysis on the basis of the experiment proves that it is entirely feasible to apply recycled concrete to practical engineering for the sake of its good seismic behaviors.This work provides a theoretical basis for a further study and practical application of recycled concrete structure.
引文
[1]孙跃东,肖建庄.再生混凝土骨料[J].混凝土,2003(10):33.SUN Yuedong,XIAO Jianzhuang.Aggregate of recycled con-crete[J].Concrete,2003(10):33.
[2]Mahony O,Margaret M.Analysis of the shearstrength of recycledaggregates[J].Materials and Structures/Materiaux et Construc-tions,1997,30(10):599.
[3]Papayianni P.Recycled aggregate concrete under cyclic loading[C]∥Proceedings of the international symposium on role of concretein sustainable development.Scotland:University of Dundee,2003:509-518.
[4]Grübl P,Nealen A.Construction of an office building using con-crete made from recycled demolition material[J].Aus DarmstadtConcrete,1998(13):329.
[5]孙跃东,肖建庄,周德源,等.再生轻质砌块填充墙再生混凝土框架抗震性能的试验研究[J].地震工程与工程振动,2005(10):124.SUN Yuedong,XIAO Jianzhuang,ZHOU Deyuan,et al.Experi-mental research on seismic behavior of recycled concrete framefilled with recycled masonry blocks[J].Earthquake Engineeringand Engineering Vibration,2005(10):124.
[2]Mahony O,Margaret M.Analysis of the shearstrength of recycledaggregates[J].Materials and Structures/Materiaux et Construc-tions,1997,30(10):599.
[3]Papayianni P.Recycled aggregate concrete under cyclic loading[C]∥Proceedings of the international symposium on role of concretein sustainable development.Scotland:University of Dundee,2003:509-518.
[4]Grübl P,Nealen A.Construction of an office building using con-crete made from recycled demolition material[J].Aus DarmstadtConcrete,1998(13):329.
[5]孙跃东,肖建庄,周德源,等.再生轻质砌块填充墙再生混凝土框架抗震性能的试验研究[J].地震工程与工程振动,2005(10):124.SUN Yuedong,XIAO Jianzhuang,ZHOU Deyuan,et al.Experi-mental research on seismic behavior of recycled concrete framefilled with recycled masonry blocks[J].Earthquake Engineeringand Engineering Vibration,2005(10):124.
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