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当前位置:159彩票 » 悍马加固材料资讯中心 » 碳纤维布加固 » 碳纤维布加固技术在现代建筑的应用-悍马碳纤维布

碳纤维布加固技术在现代建筑的应用-悍马碳纤维布

文章出处:人气:-发表时间:2019-10-14 16:31【

摘 要:碳纤维布轻质高强、适用面广、施工方便快捷等优点不言而喻,因而碳纤维布加固法作为一种新型的、技术含量高的结构加固技术,在加固领域得到广泛应用,具有很大的推广价值和社会经济效益。本文将碳纤维布加固技术与传统的几种加固技术进行了分析,并且全面阐述了碳纤维加固的优点和在工程应用中需注意的几点不足。另外,本文还将碳纤维布加固与粘钢加固进行对比换算,并提出在不同条件下选用不同加固方案。

引言

159彩票MUQIAN,GANGJINHUNNINGTUJIEGOUJICHENGWEIXIANDAIJIANZHU、GOUZHUWUZUICHANGYONGDEJIEGOUXINGSHI,CHENGWEIWOGUONAIZHISHIJIEGEGUOZHANZHUDAODIWEIDEJIANZHUJIEGOU,ZAIWOGUOSHEHUIZHUYIJINGJIJIANSHEZHONGFAHUIZHEBUKEDAITIDEZUOYONG。YINCI,QUEBAOGANGJINHUNNINGTUJIEGOUDEANQUANSHIYONGJUYOUZHONGDADEXIANSHIYIYI。DANSHIYOUYUZIRANZAIHAI、NIANJIUSHIXIUYIJIRENWEIYINSU、HEZAIDENGJITIGAOHESHEJIGUIFANXIUDINGDENGYUANYINDAOZHIJIANZHUJIEGOUCHENGZAILIBUZU,YINGXIANGZHENGCHANGSHIYONGHEANQUANYUNXING,XUDUIQIJINXINGJIAGUCHULI;JIAZHIYIXIEJIEGOUGONGCHENGZHONGHUNNINGTUDEZHILIANGBUJINLIXIANG,ZHISHIJIAGUWEIXIUWENTIGENGWEITUCHU,JICHENGWEIJINGJIJIANSHEDECHENZHONGFUDANBINGZHIYUELEJINYIBUDEFAZHAN。

JIAGUGAIZAOJUYOUSANGETUCHUDEYOUDIAN:TOUZISHAO、GONGQIDUAN、SHENGKONGJIAN,ZHEIXIEDOUHUIDAILAIXIANZHUDEJINGJIXIAOYI,TEBIESHISHIJIANHEKONGJIANDEJIESHENG,DUIGONGYESHENGCHANHESHANGYEHUODONGLAIJIANG,ZAIXIAOYIFANGMIANWANGWANGQIZHEJUEDINGXINGDEZUOYONG。DUICHENGZAILIBUZUDEGONGCHENGJIEGOUJINXINGXIUFUJIAGU,BUJINKEYISHIRENMINDESHENGMINGJICAICHANDEDAOBAOZHANG,HAIKEYIJINKENENGDIFAHUIJIYOUJIEGOUDEZUOYONG,HUANJIERENLI、WULI、ZIJINJINZHANGDEQINGKUANG,SHIZIJINTOUDAOZUIXUYAODEDIFANG。

现有的加固方法

GANGJINHUNNINGTUJIEGOUDEJIAGUJISHUYUELAIYUESHOUDAORENMENDEZHONGSHI,RENMENZAIZHANGQIDIYANJIUYUSHIJIANGUOCHENGZHONG,XINGCHENGLEDUOZHONGJIAGUFANGFA,CHUANTONGDEJIAGUFANGFAYOUYIXIAJIZHONG①:

1)增大截面法

159彩票TONGGUOSHIYONGTONGZHICAILIAOZENGDAYUANJIEGOUDEJIEMIANMIANJI,LAITIGAOGOUJIANCHENGZAILI,TONGSHIJIADAJIEMIANGANGDU,ZENGQIANGKANGZHENNENGLI,GONGYIJIANDAN,SHIYONGMIANGUANG。QUEDIANSHIXIANCHANGSHIZUOYEDUO,SHIGONGZHOUQIZHANG,DUIYUANJIEGOUYINGXIANGJIAODA,RU:JIANXIAOSHIYONGKONGJIAN,ZENGJIAJIEGOUZIZHONGDENG。

2)外包钢法

YIXINGGANGBAOGUOYUJIEGOUDESIJIAOHUOLIANGJIAO,DUIGOUJIANDEJIEMIANHEWAIGUANYINGXIANGJIAOXIAO,JIAODAFUDUDITIGAOCHENGZAILI,SHIGONGJIANDAN,GONGZUOLIANGXIAO,ZENGDAYANXING,SHIYONGYUJIAGUHUNNINGTUZHU、LIANGDENGJIEGOU;QUEDIANSHIYONGGANGLIANGJIAODA,KANGFUSHIXINGHENAIJIUXINGCHA,FEIYONGGAO。

3)预应力加固法

CAIYONGWAIJIAYUYINGLILAGANHUOXINGGANGCHENGGANJINXINGJIAGU,JIANGDIYINGLISHUIPING,TIGAOCHENGZAILI,JIHUBUGAIBIANSHIYONGKONGJIAN。QUEDIANSHINAIHUOXING、NAIFUSHIXINGJIAOCHA,QIEDUISHIGONGSHEBEI、GONGXUJISHIGONGRENYUANDESUZHIYAOQIUJIAOGAO。

4)增设支点法

159彩票ZENGSHEZHIDIANSHIYONGJIANSHAOGOUJIANJISUANKUADU,CONGERJIANXIAOJIEGOUNEILI,TIGAOCHENGZAILI,BINGQIESUOXIAOLIEFENGKUANDUXIAOGUOMINGXIAN。QUEDIANSHIYINGXIANGYUANJIEGOUBUJU,SHIYONGGONGNENGSHOUDAOXIANZHI。

5)托梁拔柱法

159彩票SHIYIZHONGTUOWUJIABAZHU、TUOQIANGBAZHUJITUOLIANGBAZHUDEJIAGUFANGFA,GAIZAOSHIJIANDUAN、FEIYONGDI,QUEDIANSHIJISHUYAOQIUGAO、ANQUANYINHUANDA。SHIYONGYUGONGYECHANGFANGDEGAIZAO。

6)粘钢加固法

159彩票ZHANGANGJIAGUFASHIJIANGGANGBANZHANTIEZAIGOUJIANWAIBULAITIGAOJIEGOUCHENGZAINENGLIDEYIZHONGFANGFA。GAIFANGFAJIHUBUGAIBIANGOUJIANWAIXINGHESHIYONGKONGJIAN,SHIGONGJIANDANKUAISU,SHIZUOYELIANGXIAO,DANDUIGOUJIANGONGZUOHUANJINGYOUYAOQIU,HUANJINGWENDUBUGAOYU60℃,XIANGDUISHIDUBUDAYU70%,WUHUAXUEFUSHI。

CHUANTONGJIAGUFANGFASUIRANZHONGLEIJIAODUO,QIEMEIZHONGJIAGUFANGFADOUYOUGEZIDEYOUDIAN,DANMEIZHONGFANGFAJIAGUDEZONGHEXIAOGUODOUBUNENGWANQUANMANZUSHIYONGZHEDEYAOQIU。SUIZHETANXIANWEIZENGQIANGSULIAODECHUXIANJIDUIQIZENGQIANGJIAGUHUNNINGTUJIEGOUXIAOGUOYANJIUDESHENRU,ZHEIZHONGJIAGUJISHUYUELAIYUESHOUDAOJIANZHUXINGYEDEQINGLAI,QIYINGYONGYUELAIYUEGUANGFAN。

碳纤维加固技术的优点

159彩票TANXIANWEIZENGQIANGSULIAO(Carbon Fiber Reinforced Plastics,XIACHENGCFRP,CHANGYITANXIANWEIBUDEXINGSHICHUXIAN),JUYOUYOUYIDEWULILIXUEXINGNENG、NAIJIUXINGJIKANGFUSHIXINGDENGTEDIAN。GAICAILIAOSHIZAIRIBENFAMINGDE,ZUIZAOYINGYONGYUHANGKONGHANGTIAN,GUOWAIZUIZAODUIXIANWEIJIAGUXIUFUHUNNINGTUJIEGOUJISHUJINXINGYANJIUDESHIDEGUOIBMBYANJIUYUANHERUISHIDEEMPASHIYANSHI,RIBEN、HANGUOHEMEIGUOJINSUIQIHOU,TANXIANWEISULIAODUIGANGJINHUNNINGTUJINXINGXIUFUJIAGUZAIFADAGUOJIAYICHENGWEIYIXIANGCHENGSHUJISHU②。

YUCHUANTONGJIAGUFANGFABIJIAO,TANXIANWEIZENGQIANGSULIAOJUYOUMINGXIANDEJISHUYOUSHI,ZHUYAOTIXIANZAI③:

1)强度高、延性好

159彩票TANXIANWEIBUJUYOUYOUYIDEWULILIXUEXINGZHI,KANGLAQIANGDU2500-4500MPa(SHIPUTONGGANGCAIDE10BEIZUOYOU),DANXINGMOLIANGSHIPUTONGGANGCAIDE1-2BEI。YIQIQIANGDULAITIGAOCHENGZAILI,YIQIGAODANXINGMOLIANGLAIGAISHANJIEGOUDEYANZHANXING,CONGERDADAOJIAGUDEMUDE。

2)耐久性和耐腐蚀性好

159彩票YOUYUQIGUYOUDEHUAXUETEXING,ZHISHITANXIANWEIBUNENGGOUDIKANGYIBANSUANJIANYANDEFUSHI,YOULIANGHAODENAIFUSHIXINGHENAIJIUXING,ERQIEQIBENSHENHAIKEYIQIDAODUINEIBUHUNNINGTUJIEGOUDEBAOHUZUOYONG,JIANJIEZENGJIALEHUNNINGTUBAOHUCENG,CONGERDADAOSHUANGZHONGXIAOGUO。

3)不增加构件的自重及体积

TANXIANWEIBUZHILIANGQING,HOUDUBO,ZHANTIEHOUJIBENBUZENGJIAJIEGOUZIZHONGHECHICUN,BUYINGXIANGJIANZHUWUDEYOUXIAOSHIYONGKONGJIANHEWAIGUAN。

4)适用面广

159彩票TANXIANWEIBUSHIYIZHONGROUXINGCAILIAO,KEYIFANGBIANDICAIJIAN,SUOYIZHEIZHONGJIAGUJISHUKEYIGUANGFANSHIYONGYUGEZHONGJIEGOULEIXING(RUQIAOLIANG、SUIDAO、HANDONG、YANCONGDENG)、GEZHONGJIEGOUXINGZHUANG(RUJUXING、YUANXING、QUMIANJIEGOUDENG)、GEZHONGJIEGOUBUWEI(LIANG、BAN、ZHU、JIEDIAN、GONG、QIAODENG),QIEBUGAIBIANJIEGOUXINGZHUANGJIBUYINGXIANGJIEGOUWAIGUAN,ZHEISHICHUANTONGJIAGUFANGFASUOBUJUYOUDE。

5)施工便捷高效

159彩票TANXIANWEIBUJIAGU,WUDAXINGJIJU,MEIYOUSHIZUOYE,ZHANYONGCHANGDISHAO。SHIGONGGONGXIAOGAO,ZHANTIETANXIANWEIFASHIZHANTIEGANGBANSHIGONGGONGXIAODE4-5BEI。SHIGONGZHILIANGYIBAOZHENG,TANXIANWEIYUJINLIAOQINGZHIROURUAN,YITIEFU,JISHIBEIJIAGUDEJIEGOUBIAOMIANBUSHIFEICHANGPINGZHENG,YEKEYIBAOZHENGHENGAODEZHANTIELV。 

TANXIANWEIBUDEZHEIXIETEDIAN,WEIJIANZHUJIEGOUDEJIAGUTIGONGLEJISHUZHICHI,JUEDINGLETANXIANWEIJIAGUJISHUJUYOUHENDADEJINGJIJIAZHIHESHEHUIXIAOYI。

碳纤维加固材料发展及其缺点

159彩票RANER,SUIZHETANXIANWEICAILIAOZAIJIAGULINGYUFAHUIZHONGYAOZUOYONGDETONGSHI,YECUNZAIZHEBUZU:

1)拉伸弹性模量相对于其强度过低

YINGYONGYUJIEGOUJIAGUDETANXIANWEILASHENQIANGDUYIBANZAI3000MPaYISHANG,ERQIDANXINGMOLIANGZHIYOU230GPaZUOYOU,GAODANXINGMOLIANGDEYEBUGUO380-640GPa ZUOYOU。YAOFAHUIJIAODADEQIANGDU,TANXIANWEIBUXUXIANGDANGDADEBIANXING,DANGYUGANGJINGONGTONGGONGZUOSHI,GANGJINDADAOQUFUQIANGDUSHICFRPBINGWEIFAHUICHUQUANBUQIANGDU,CONGERWUFACHONGFENLIYONGTANXIANWEIDEQIANGDU,QIENANYIYOUXIAODIYIZHIJIEGOUDEBIANXINGYULIEFENGDEFAZHAN。

2)混凝土与碳纤维间的粘结层易破坏

HUANYANGSHUZHIZHANJIECENGDEJIANQIEQIANGDUYUJIANQIEBIANXINGSHIYIDINGDE,CHAOGUOJIXIANYINGBIANHOU,ZHANJIECENGJIANGCHANSHENGJIEMIANWEILIEFENG,SUIZHEWEILIEFENGDEBUDUANKUOZHAN,ZUIHOUFASHENGBOLIPOHUAI,SUOYIZHANTIECFRPPIANCAIJIAGUYOUQIXIANDU,GUOLIANGZHANTIEHUIDAOZHIJIEMIANWUFACHUANDIZUGOUDEJIANYINGLISHIDECFRPDEQIANGDUWUFADEDAOCHONGFENLIYONG,BINGQIEZAIGOUJIANCHENGSHOUJIAODAHEZAISHIRONGYICHUXIANZHANJIEPOHUAI。

XIANYOUDEJIAGUSHOUDUANSHIJIANGCFRPFEICHANGJINMIDIZHANTIEDAOSHIJIANDEBIAOMIAN,DANGSHIJIANDEBIAOMIANYOUYIDINGDEQULVSHI,CFRPZAISHOULADETONGSHIHAIHUICHENGSHOUYIGEYOUQULVDAILAIDEBOLIYINGLI,ZHEIYEHUIJIAKUAIGOUJIANDEZHANJIEPOHUAI。

3)无屈服点,为脆性破坏

TANXIANWEIBUSHIYIZHONGXIANXINGCAILIAO,MEIYOUXIANGGANGJINNEIYANGDEQUFUDIAN,JIEGOUFASHENGPOHUAIQIANMEIYOUXIANZHAO,WEICUIXINGPOHUAI。

粘贴碳纤维布和粘钢的适用性对比

XIANDAIJIANZHUZHONG,ZHANGANGJIAGUHETANXIANWEIJIAGUYINGYONGJIAODUO,CICHUJIANGLIANGZHONGJIAGUFANGFAJINXINGDUIBI:

TANXIANWEIBUQINGZHIGAOQIANG,HOUDUWEI0.111-0.167mm,KANGLAQIANGDUGAO,WEIPUTONGGANGCAIDE8-10BEI,DANGEXIANGYIXING,JIKANGLAQIANGDUGAODANKANGJIANQIANGDUDI;SHIGONGGENGWEIJIANBIAN,SHIGONGSUDUWEIZHANGANGDE2-3BEI。

159彩票GANGBANDEWULILIXUEXINGNENGWEIGEXIANGTONGXING,SHOULIXINGNENGHAO;SHIGONGSHIXUZHUANYONGJIAJUHESHIGONGJIJU, SHIGONGGONGXUHESHIGONGCAOZUOXINGJIAOTANXIANWEIBUFUZA。

下表中,我们对碳纤维布与钢板进行换算,通过分析得出:

对于普通小荷载结构或构件,其补强所需面积较小,粘贴碳纤维布1-2层即可满足要求时,优先选用粘贴碳纤维布加固,其经济性和施工操作性优势明显:而当结构或构件补强所需面积较大时,即粘贴碳纤维布超过2-3层时,优先选用粘钢加固方案,可大幅提高结构的承载力或受力性能,并取得良好的经济性。表1

 GANGBANYUTANXIANWEIBUKANGWANJIAGUDENGQIANGHUANSUANJIEGUOBIAO④(DANWEI:mm)

结语

SUIZHEWOGUOJINGJIJIANSHEDIXUNMENGFAZHAN,GELEIJIANZHUJIEGOUDESHIYONGXINGHEANQUANXINGBEIGUANGFANGUANZHU,RUHEZAIQUEBAOANQUANDEQIANTIXIA,DITOUZIDAILAIGAOHUIBAO,CHENGWEIXINSHIDAIDEJIAODIAN。YIYIYUANDENGGONGGONGJIANZHUWEILI,XINDEYILIAOSHEBEIHUOZHEJIEGOUGONGNENGDIAOZHENG,DUIYUANYOUJIEGOUTICHULEXUQIU,RUHEZAIDUANDESHIJIANNEIDADAOYAOQIU,JINKENENGJIANSHAODUISHEHUIDESUNSHI,DOUZHIDEWOMENRENZHENSIKAO。

TANXIANWEIBUJUYOUQIANGDUGAO、YANXINGHAO、NAIFUSHIHENAIJIUXINGHAO、SHIYONGMIANGUANG、SHIGONGBIANJIEDENGYOUDIAN,ZAIJIANZHUJIAGUZHONGJUYOUGUANGKUODEQIANJING。SUIZHEKEJIDEBUDUANJINBU,XINDEJIAGUCAILIAO、XINDEJIAGUJISHU,BIJIANGWEISHEHUIZHUYIJIANSHEZHURUXINDESECAI。


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