鋼波紋管在組裝鋪設完成后,回填(tian)時(shi),不需要特別(bie)的(de)填(tian)土(tu)(tu)(tu)(tu)資料,用一般土(tu)(tu)(tu)(tu)質即可。在距波(bo)紋(wen)管口(kou)30cm規劃內的(de)填(tian)土(tu)(tu)(tu)(tu)中,不得有大邊尺度逾越8cm的(de)石(shi)塊(kuai)或(huo)混凝土(tu)(tu)(tu)(tu)塊(kuai)、凍(dong)土(tu)(tu)(tu)(tu)塊(kuai)、高塑性黏土(tu)(tu)(tu)(tu)塊(kuai)或(huo)其(qi)他有害物(wu)質。在多(duo)年凍(dong)土(tu)(tu)(tu)(tu)區(qu)域,要求涵管周圍2m以內均(jun)選用含(han)土(tu)(tu)(tu)(tu)量不大于5%的(de)砂(sha)礫填(tian)筑(zhu)。
鋼波紋管今日被刷屏啦!
鋼(gang)波紋(wen)涵管選用(yong)標準化規劃,出產(chan),規劃簡(jian)略,出產(chan)周期短;工(gong)(gong)(gong)(gong)程(cheng)實踐造(zao)(zao)價比同類跨徑(jing)的橋,涵洞低;施(shi)(shi)工(gong)(gong)(gong)(gong)工(gong)(gong)(gong)(gong)期短,主(zhu)要為組裝(zhuang)施(shi)(shi)工(gong)(gong)(gong)(gong);金屬波紋(wen)涵管替代(dai)鋼(gang)筋混凝土進(jin)行涵洞施(shi)(shi)工(gong)(gong)(gong)(gong),不論從施(shi)(shi)工(gong)(gong)(gong)(gong)周期,施(shi)(shi)工(gong)(gong)(gong)(gong)造(zao)(zao)價,環(huan)保含義等方(fang)面都有其不可比較的。
鋼波(bo)紋(wen)涵(han)管可加(jia)強(qiang)涵(han)洞的防(fang)(fang)水(shui)(shui)功(gong)用。對腐蝕及(ji)沖(chong)刷較為(wei)嚴峻的場(chang)合,除(chu)在外壁(bi)(bi)增加(jia)2道熱(re)涂瀝(li)青層外,可考慮在管內壁(bi)(bi)包裹一層C25細石砼,更(geng)能(neng)加(jia)強(qiang)涵(han)洞受水(shui)(shui)流(liu)沖(chong)刷的才能(neng),確保對鋼波(bo)紋(wen)涵(han)管壁(bi)(bi)的維護(hu)。腐蝕規(gui)劃應(ying)遵從預防(fang)(fang)為(wei)主和(he)防(fang)(fang)護(hu)結(jie)合的原(yuan)則。
根(gen)據出產過程中發生介質的(de)腐蝕(shi)性(xing)、環境條件(jian)、出產操作管(guan)理(li)水平和施(shi)工修(xiu)補條件(jian)等(deng),量體裁衣,區別對待,綜合選(xuan)擇防腐蝕(shi)措施(shi)。對危及(ji)人身(shen)安全和修(xiu)補困難的(de)部位,以(yi)及(ji)重(zhong)要的(de)承(cheng)重(zhong)結構(gou)和構(gou)件(jian)應(ying)加強防護。鋼波紋(wen)涵管(guan)有利于改(gai)善軟土(tu)(tu),膨脹土(tu)(tu),濕陷性(xing)黃土(tu)(tu)等(deng)特別地基結構(gou)物處(chu)的(de)不均勻沉降問題。
提(ti)高(gao)了公路服務功(gong)用,減少(shao)了工后維(wei)護本(ben)錢;減少(shao)了水(shui)泥,塊片石(shi)或碎石(shi),砂等的(de)用量,有(you)利于環保;南邊區域地下水(shui)多(duo)帶(dai)有(you)不(bu)同程度的(de)腐(fu)蝕性,一起山嶺重(zhong)丘區域地表水(shui)流湍急,季節性降雨沖刷嚴峻。選(xuan)用管頂填土的(de)辦法,在管兩邊保持對稱且(qie)均衡的(de)原則下進行。
填土(tu)辦法:有必要(yao)分(fen)層(ceng)攤鋪,逐(zhu)層(ceng)壓(ya)實(shi)(shi),每層(ceng)壓(ya)實(shi)(shi)厚度(du)(du)不逾越15cm-25cm,填土(tu)的壓(ya)實(shi)(shi)度(du)(du)要(yao)求抵達(da)重型擊實(shi)(shi)標準(zhun)95%以(yi)上(shang),且與該處路基的壓(ya)實(shi)(shi)度(du)(du)共同。波紋管涵附近的填土(tu)豎向(xiang)包含(han)管頂小填土(tu)厚度(du)(du),兩邊包含(han)3/4倍管徑高度(du)(du)規劃的管側的填土(tu),應(ying)特別注意夯(壓(ya))實(shi)(shi)。
管側填土因區域狹小,不能運用壓路機,可運用小型振動夯夯實。管頂填土可按照路基壓實,選用相同的壓路機具。若金屬波紋涵管管頂小填土厚度沒有抵達小值,應阻止一切機動車輛通行。當管頂填足小值時,仍不能讓振動壓路機或重型夯錘在其上作業,以免損壞金屬波紋涵管及周圍填土。//hanihanbj.com/
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