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重慶建筑加固　保(bao)證植筋加固工程(cheng)質量的(de)方法

植(zhi)筋(jin)加固技術(shu)是一項針對混凝土結構(gou)較簡捷、有效的連接與錨(mao)固技術(shu)；可植(zhi)入普通鋼(gang)筋(jin)，也(ye)可植(zhi)入螺栓式錨(mao)筋(jin)；現已廣(guang)泛應(ying)用于建筑物的加固改造工(gong)程。

植筋(jin)加固(gu)工(gong)程質(zhi)量(liang)的(de)措施(shi)：

（1)、注(zhu)膠(jiao)必(bi)須(xu)(xu)有(you)相(xiang)應的壓力，孔(kong)(kong)內膠(jiao)體必(bi)須(xu)(xu)飽滿，而且每個孔(kong)(kong)的膠(jiao)粘劑必(bi)須(xu)(xu)一次注(zhu)完，如果遇到一只（桶）膠(jiao)注(zhu)完不夠的情況應及(ji)時補注(zhu)。

（2）、沖擊(ji)鉆(zhan)鉆(zhan)孔時(shi)不能震酥磚結(jie)構(gou)的(de)結(jie)合(he)面或震裂(lie)結(jie)構(gou)邊緣(yuan)棱角，

（3）、鉆(zhan)(zhan)孔(kong)(kong)(kong)(kong)(kong)時(shi)水(shui)平(ping)(ping)度及垂(chui)直度的(de)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)  本工(gong)(gong)程結構拆除后(hou)受力狀態(tai)改變，鋼筋錨(mao)固的(de)質量尤為(wei)重(zhong)要，因此，必(bi)須保(bao)證錨(mao)固鋼筋位置以(yi)及垂(chui)直度的(de)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)有可靠措施。  孔(kong)(kong)(kong)(kong)(kong)徑(jing)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)：在作業(ye)面(mian)放(fang)鉆(zhan)(zhan)孔(kong)(kong)(kong)(kong)(kong)位置線(xian)時(shi) ，標出(chu)孔(kong)(kong)(kong)(kong)(kong)徑(jing)。深(shen)度控(kong)(kong)(kong)制(zhi)(zhi)(zhi)：電錘或水(shui)鉆(zhan)(zhan)上(shang)帶(dai)深(shen)度控(kong)(kong)(kong)制(zhi)(zhi)(zhi)裝置，成(cheng)孔(kong)(kong)(kong)(kong)(kong)施工(gong)(gong)深(shen)度應達(da)到要求(qiu)(qiu)+200mm。方向控(kong)(kong)(kong)制(zhi)(zhi)(zhi)：①錨(mao)固用水(shui)平(ping)(ping)孔(kong)(kong)(kong)(kong)(kong)及垂(chui)直孔(kong)(kong)(kong)(kong)(kong)做法見下(xia)圖。②當鉆(zhan)(zhan)柱(zhu)(zhu)面(mian)、墻面(mian)（水(shui)平(ping)(ping)）孔(kong)(kong)(kong)(kong)(kong)施工(gong)(gong)時(shi)，以(yi)保(bao)證機身與(yu)柱(zhu)(zhu)面(mian)、墻面(mian)垂(chui)直。水(shui)平(ping)(ping)孔(kong)(kong)(kong)(kong)(kong)成(cheng)孔(kong)(kong)(kong)(kong)(kong)要求(qiu)(qiu)向上(shang)傾斜(xie)3～ 5°的(de)角(jiao)度，以(yi)防止注(zhu)膠時(shi)膠倒(dao)流，內(nei)部出(chu)現空洞。

（4）、鋼筋必須按要求除銹，鋼筋表明不能有油漬等雜物。

（5)、應堵住(zhu)外(wai)界向孔(kong)(kong)內滲流水(shui)或(huo)污物，孔(kong)(kong)內不能滯留明水(shui)，清理干凈孔(kong)(kong)內明水(shui)后，及時注(zhu)膠并植入連(lian)接件，

（6）、植筋所(suo)用(yong)的錨(mao)固膠必須是合格(ge)產品，各(ge)項性能指(zhi)標要符合規范要求。

（7)、一般鉆孔(kong)深度應(ying)保證(zheng)錨固設計深度+20mm，預留的(de)深度是考慮(lv)清孔(kong)后的(de)滯留物和連接筋端(duan)頭粘接所需。