| 均布荷载作用下碳纤维布加固预应力空心板延性分析 |
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| 引用本文： | 闫长旺,刘曙光,王刚,王猛,王玉清.均布荷载作用下碳纤维布加固预应力空心板延性分析[J].解放军理工大学学报,2010,11(3):334-338. |
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| 作者姓名： | 闫长旺 刘曙光 王刚 王猛 王玉清 |
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| 作者单位： | 闫长旺(内蒙古工业大学内蒙古,呼和浩特,010062;大连理工大学港口和近海工程国家重点实验室,辽宁,大连,116024);刘曙光,王猛,王玉清(内蒙古工业大学内蒙古,呼和浩特,010062);王刚(大连理工大学港口和近海工程国家重点实验室,辽宁,大连,116024) |
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| 基金项目： | 教育部创新团队计划资助项目，内蒙古交通厅科技项目 |
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| 摘 要： | 为了研究碳纤维布加固后预应力空心板延性的变化,进行了7块碳纤维布加固预应力空心板试件在均布荷载作用下的试验,分析了碳纤维布粘贴量和粘贴方式对延性的影响,提出了碳纤维布加固预应力空心板曲率延性系数计算方法。试验结果表明,碳纤维布粘贴量和粘贴方式对位移延性系数影响明显,随着碳纤维布粘贴量的增加,试件位移延性系数减小,单层双幅粘贴方式下,延性系数最大。曲率延性系数计算值与位移延性系数之比在0.82左右,所提出的曲率延性系数计算方法是偏于安全的,具有较高的计算精度。
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| 关 键 词： | 碳纤维布 预应力空心板 位移延性 曲率延性 计算方法 |
Ductility analysis of pre-stressed RC hollow core slab
strengthened by CFRP under uniform load |
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| YAN Chang-wang,LIU Shu-guang,WANG Gang,WANG Meng and WANG Yu-qing.Ductility analysis of pre-stressed RC hollow core slab
strengthened by CFRP under uniform load[J].Journal of PLA University of Science and Technology(Natural Science Edition),2010,11(3):334-338. |
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| Authors: | YAN Chang-wang LIU Shu-guang WANG Gang WANG Meng and WANG Yu-qing |
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| Institution: | Inner Mongolia University of Technology,Huhhot 010062,China;State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China;Inner Mongolia University of Technology,Huhhot 010062,China;State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China;Inner Mongolia University of Technology,Huhhot 010062,China;Inner Mongolia University of Technology,Huhhot 010062,China |
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| Abstract: | T o study the ductility v ar iat ion of pre-st ressed RC hollow core slab str engthened by car bon f iber
reinforced plast ic( CFRP) , seven specimens w ere tested under uniformed load. Inf luences of the bonding
fo rms and the st reng thening quant ities on the duct il ity w ere analyzed, and the calculat ion analy sis metho d
of curvature duct ility w as presented. Findings sug gest that the ductility of pre-st ressed RC hollow core
slab st reng thened by CFRP w ith dif fer ent bonding forms and st reng thening quant it ies changes obviously ,
and that the displacement duct ility factor decr eases w ith the incr easing of str engthening quant ity . T w o
pieces bonding fo rm of one lay er can of fer mor e duct ility than the o ther tw o bonding forms, and that the
rat io o f curve duct ility factors to the displacement ductility factor is about 0. 82, so the calculat io n values
are safe and more accurate |
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| Keywords: | CFRP( car bon f iber reinforced plast ic) pre-st ressed RC hollow core slab displacement duct ility cur vature duct ility calculat io n metho d |
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