工程用水泥基复合材料(ECC)在结构防震减灾中的应用
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摘要
结合汶川地震阐述性能式设计在防震减灾中的必要性。对ECC的性能特点和现浇式ECC减震装置的构造应用进行介绍,并提出一种新型的预制式ECC减震装置。结合实际工程,计算使用ECC减震装置和不使用该装置框架结构的抗震性能,结果表明:在八度抗震区,ECC装置可以将6层框架的底层位移角从0.145减少到0.1,顶层位移由20.23 mm减小到13.37 mm,ECC装置作为一种新的防震减灾手段,具有明显的作用。
This paper begins by discussing the need of damage mitigation for building structures under performance-based design according to wenchuan earthquake.Based on this concept,the character of engineered cementitious composites(ECC) and the application of the on-site ECC device are discussed.Moreover,a new precast ECC device is suggested.Based on the practical projects,A 6-story frame structure with and without such ECC devices was calculated in 8-degree earthquake zone.The results indicate that ECC devices can reduce the drift angle of the base story from 0.145 to 0.1,reduce the displacement of the top story from 20.23 mm to 13.37 mm.ECC devices are confirmed to have significant potential as a new structural technology for earthquake resistance and disaster mitigation.
This paper begins by discussing the need of damage mitigation for building structures under performance-based design according to wenchuan earthquake.Based on this concept,the character of engineered cementitious composites(ECC) and the application of the on-site ECC device are discussed.Moreover,a new precast ECC device is suggested.Based on the practical projects,A 6-story frame structure with and without such ECC devices was calculated in 8-degree earthquake zone.The results indicate that ECC devices can reduce the drift angle of the base story from 0.145 to 0.1,reduce the displacement of the top story from 20.23 mm to 13.37 mm.ECC devices are confirmed to have significant potential as a new structural technology for earthquake resistance and disaster mitigation.
引文
[1]GB 50223-2008建筑结构抗震设计规范[S].
[2]LI V C.On Engineered Cementitious Composites(ECC)-a Re-viewof the Material and Its Applications[J].Advance ConcreteTechnology,2003,1(3):215-230.
[3]Kanda T,Watanabe S,Li V C.Application of Pseudo StrainHardening Ementitious Composites to Shear Resistant Structur-al Elements[C]//FRAMCOS-3,Freiburg:Aedificatto Publish-ers,1998:1477-1490.
[4]Vasillaq Xoxia.Investigating the Shear Characteristics of HighPerformance Fiber Reinforced Concrete[D].Toronto:Univer-sity of Toronto,2003.
[5]Gregor Fischer,V C Li.Effect of Matrix Ductility on Deforma-tion Behavior of Steel-Reinforced ECC Flexural Members underReversed Cyclic Loading Conditions[J].ACI Structural Journal,2002,99(6):781-791(3).
[6]Hiroshi Fukuyama.Application of High Performance Fiber Rein-forced Cementitious Composites for Damage Mitigation of Build-ing Structures[J].Advance Concrete Technology,2004(4):35-44.
[7]土振兴,韩亚强.粘弹性阻尼器对框架结构地震响应的影响分析[J].河北工业大学学报:自然科学版,2009,26(1):34-36.
[2]LI V C.On Engineered Cementitious Composites(ECC)-a Re-viewof the Material and Its Applications[J].Advance ConcreteTechnology,2003,1(3):215-230.
[3]Kanda T,Watanabe S,Li V C.Application of Pseudo StrainHardening Ementitious Composites to Shear Resistant Structur-al Elements[C]//FRAMCOS-3,Freiburg:Aedificatto Publish-ers,1998:1477-1490.
[4]Vasillaq Xoxia.Investigating the Shear Characteristics of HighPerformance Fiber Reinforced Concrete[D].Toronto:Univer-sity of Toronto,2003.
[5]Gregor Fischer,V C Li.Effect of Matrix Ductility on Deforma-tion Behavior of Steel-Reinforced ECC Flexural Members underReversed Cyclic Loading Conditions[J].ACI Structural Journal,2002,99(6):781-791(3).
[6]Hiroshi Fukuyama.Application of High Performance Fiber Rein-forced Cementitious Composites for Damage Mitigation of Build-ing Structures[J].Advance Concrete Technology,2004(4):35-44.
[7]土振兴,韩亚强.粘弹性阻尼器对框架结构地震响应的影响分析[J].河北工业大学学报:自然科学版,2009,26(1):34-36.
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