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詳解下腳手架的搭設應用
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詳解下腳手架的搭設應用

  • 作者:youhua   發布日期:2020-06-21   總瀏覽:

  設(she)(she)置平(ping)(ping)安(an)(an)防護(hu)(hu)區:施(shi)工(gong)(gong)現場左近制止行人、車輛(liang)通行,劃定平(ping)(ping)安(an)(an)防護(hu)(hu)區,施(shi)工(gong)(gong)現場兩端(duan)設(she)(she)置施(shi)工(gong)(gong)標志(zhi),依據(ju)施(shi)工(gong)(gong)平(ping)(ping)安(an)(an)操作規程(cheng)的請(qing)求,選擇平(ping)(ping)安(an)(an)防護(hu)(hu)措施(shi),搭設(she)(she)鋼管腳(jiao)手(shou)架(jia),下(xia)面鋪設(she)(she)竹腳(jiao)手(shou)架(jia),掛(gua)防護(hu)(hu)網(wang),或從(cong)山頂掛(gua)繩索,系(xi)好(hao)施(shi)工(gong)(gong)平(ping)(ping)安(an)(an)帶,腳(jiao)手(shou)架(jia)的搭設(she)(she)應契合《腳(jiao)手(shou)架(jia)搭設(she)(she)備工(gong)(gong)標準(zhun)》的規則,現場施(shi)工(gong)(gong)人員應佩戴平(ping)(ping)安(an)(an)帽和必要(yao)的勞(lao)動防護(hu)(hu)用品。


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  工(gong)作(zuo)面(mian)清算(suan)肅清工(gong)作(zuo)面(mian)上的雜(za)物和松動巖石,修整(zheng)(zheng)邊坡轉(zhuan)角(jiao)和坡頂(ding)轉(zhuan)角(jiao)使之(zhi)呈弧形,并盡可能平整(zheng)(zheng)工(gong)作(zuo)面(mian),以利于客土(tu)噴播施工(gong),增加工(gong)作(zuo)面(mian)綠(lv)化效果(guo)。施工(gong)前,確保工(gong)作(zuo)面(mian)均(jun)勻凹凸度為±10cm,最大不超越±15cm;對低洼處恰(qia)當覆土(tu),并用種植袋(dai)土(tu)夯實或回填,直(zhi)至反坡段消逝。


  如(ru)有可能,應(ying)在工作(zuo)面(mian)(mian)(mian)上每隔一定(ding)高度開一個(ge)橫向溝槽,以(yi)增加工作(zuo)面(mian)(mian)(mian)粗糙(cao)度和(he)外部(bu)土壤對(dui)工作(zuo)面(mian)(mian)(mian)的(de)粘附(fu)力(li),假如(ru)巖質邊(bian)(bian)坡(po)自身不(bu)穩定(ding),應(ying)采用(yong)預應(ying)力(li)錨索(suo)加固(gu),排水溝施工工作(zuo)面(mian)(mian)(mian)排水系(xi)統(tong)能否合理,直接關(guan)系(xi)到工作(zuo)面(mian)(mian)(mian)植被的(de)生長環境。在長、大邊(bian)(bian)坡(po)的(de)頂、腳、平臺(tai)處設置(zhi)排水溝,依據工作(zuo)面(mian)(mian)(mian)水流狀況,思索(suo)邊(bian)(bian)坡(po)排水溝。


  網(wang)(wang)釘土工(gong)網(wang)(wang)采用(yong)(yong)高(gao)鍍鋅棱(leng)柱鋼絲(si)網(wang)(wang)或高(gao)強度塑料網(wang)(wang)加固(gu),網(wang)(wang)徑5cm×5cm,錨桿呈梅花形布置,間距1×1m,采用(yong)(yong)風鉆(zhan)或電鉆(zhan)布置。錨桿長90-100cm.螺栓長約15-40cm.掛網(wang)(wang)施工(gong)時,應自上(shang)而下(xia)放出線圈,相(xiang)鄰兩卷鋼絲(si)網(wang)(wang)(土工(gong)網(wang)(wang))分別用(yong)(yong)扎線銜接固(gu)定。


  兩網(wang)銜(xian)接(jie)處應(ying)搭接(jie)至少10cm,每(mei)平方米不少于5個(ge)錨(mao)。網(wang)與工作面應(ying)堅持(chi)一定的(de)(de)間(jian)隙,間(jian)隙應(ying)平均。在(zai)峻峭(qiao)的(de)(de)巖石(shi)外(wai)表,草繩能(neng)夠(gou)(gou)在(zai)一定的(de)(de)距離內纏繞在(zai)網(wang)上(shang),以增加(jia)粘附力,保證客土的(de)(de)厚度。掛(gua)網(wang)能(neng)夠(gou)(gou)使土壤基質(zhi)在(zai)巖石(shi)外(wai)表構成一個(ge)耐久的(de)(de)整體板。