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当前位置:159彩票 » 悍马加固材料资讯中心 » 解决方案 » 碳纤维加固和芳纶布加固的对比_悍马加固材料

碳纤维加固和芳纶布加固的对比_悍马加固材料

文章出处:人气:-发表时间:2019-09-23 14:16【

YOUYUWAITIEXIANWEIZENGQIANGFUHECAILIAO( FRP) JUYOUQIANGDUGAO、NAIFUSHI、SHIGONGFANGBIANDENGYOUDIAN,JINNIANLAIYIZHUJIANYONGYUJIAGUJISHUZHONG。ZAIGONGCHENGJIEGOUZHONGCHANGYONGDE FRP CAILIAOZHUYAOYOUTANXIANWEI ( CFRP ) HE FANG LUN XIAN WEI( AFRP) 。NEIMETANXIANWEIBUYUFANGLUNBUJIAGUXIAOGUOYOUSHENMEQUBIENI?XIAMIANXIAOKATONGGUO“GANGJINHUNNINGTUJUXINGJIEMIANLIANGSHIJIANDESHOUWANXINGNENGSHIYAN”YUDAJIAFENXIANG。


CAILIAOSHICEXINGNENG


HUNNINGTUDESHEJIQIANGDUDENGJIWEI C25,3 GEHUNNINGTUBIAOZHUNLIFANGTISHIKUAIDEZHOUXINKANGYAQIANGDUPINGJUNZHIWEI 25. 10 MPa。ZONGJIN 10 DEQUFUQIANGDUPINGJUNZHIWEI 357. 10 MPa,DANXINGMOLIANGWEI 210 GPa。JIAGUXIANWEICAILIAOGEXINGNENGCANSHUJIAN(BIAO1),XIANWEIBUNIANJIEJIAOGEXINGNENGCANSHUJIAN(BIAO2)。


表1 纤维材料性能参数


表2 纤维布黏结胶性能参数


SHIYANFANGFA


SUOYOUSHIJIANJUNWEIJIANZHI,SHIYANCAIYONGSHOUDONGQIANJINDINGJINXINGFENJIJIAZAI,ZAISANFENDIANCHUJINXINGLIANGDIANDUICHENGJIAZAI。ZAISHIJIANCEMIANBUZHISANPAIYINGBIANYINSHENYICEDIAN,SHIJIANSHANGBIAOMIANKUAZHONGBUZHI 1 GEYINGBIANCEDIAN,KUAZHONGJIEMIANCHUDESHOULIZHUJINZHONGJIANWEIZHIGEYUMAI 1 GEYINGBIANCEDIAN,SHIJIANDIMIANKUAZHONGXIANWEICAILIAOBIAOMIANBUZHI 1 GEYINGBIANCEDIAN。BAIFENBIAOANFANGZAISHIJIANSHANGBIAOMIANLIANGDUANZHIZUOWEIZHISHUZHIFANGXIANGHELIANGDIKUAZHONGWEIZHICHU。JIAZAIZHUANGZHIRU(TU1)SUOSHI。


图1 试件加载装置


SHIYANXIANXIANG


1.承载力分析

由(表3)结果可见,加载初期( 荷载小于 10 kN) ,由于碳纤维布和芳纶布的作用,有效地限制了混凝土的变形,延迟了混凝 土 的 开 裂,开 裂 荷 载 有 所 提 高,最 大 提 高13% 。但碳纤维布和芳纶布在加载初期作用发挥不明显,加固后试件的开裂荷载提高程度低于极限荷载提高程度。试验中所用加固材料分别为Ⅰ级碳纤维布、Ⅱ级碳纤维布和芳纶布。由于3种材料抗拉强度、弹性模量和伸长率的不同,导致了加固效果的差异。由(表3)可知,Ⅰ级碳纤维布加固试件的承载力提高程度较大,加固效果更优。


表3 试件试验结果


2.挠度分析

YOU(BIAO3)、(TU2)KEZHI,FANGLUNBUJIAGUSHIJIANKUAZHONGNAODUZHIDAYUTANXIANWEIBUJIAGUSHIJIANDEKUAZHONGNAODUZHI,ZHEISHIYOUYUFANGLUNBUBENSHENJUYOUJIAOHAODEYANXING,ZENGJIALELIANGDEJIXIANBIANXINGNENGLI。LINGWAI,ZAIXIANGTONGJIAGUTIAOJIANXIA,YULIEJIAGUSHIJIANBIXIANGTONGHEZAIXIAWEIYULIEJIAGUSHIJIANDEKUAZHONGNAODUFAZHANYAOMAN,ZHEISHIYINWEIYULIEFENGJIANGDILESHIJIANDEJIXIANBIANXINGNENGLI,ZUIDANAODUJIANXIAO。


图2荷载-挠度曲线


SHIYANJIEGUOBIAOMING:


TANXIANWEIBUHEFANGLUNBUKEMINGXIANTIGAOJIAGUSHIJIANDECHENGZAILI,YANHUANLIEFENGDEFAZHAN,TIGAOZHENGTIGANGDU; TONGSHITANXIANWEIBUDEJIAGUXIAOGUOYAOYOUYUFANGLUNBU; YULIEJIAGUSHIJIANDECHENGZAILIYEYOUSUOTIGAO,DANQIYANXINGJIANGDI; YOUYUXIANWEICAILIAOCHENGDANLEYIBUFENYINGLI,JIAGUSHIJIANDEGANGJINHEHUNNINGTUYINGBIANYOUSUOJIANXIAO。


159彩票YOUSHANGKEZHI,TANXIANWEIBUJIAGUXIAOGUOYOUYUFANGLUNBUJIAGUXIAOGUO,ZAITANBUJIAGUSHIGONGZHONGRUHECAINENGBAOZHENGTANBUDEJIAGUXIAOGUONI?CAILIAOXUANQUSHIZHONGDIAN,XUANZEKABENJIUSHIXUANZELEZHUANYEDEJISHUBAOZHANGYUXITONGJIEJUEFANGAN。


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