鋼波紋涵管采用(yong)標(biao)(biao)準化(hua)設計、工(gong)(gong)廠(chang)加工(gong)(gong)生(sheng)產,生(sheng)產不受環(huan)(huan)境(jing)影響,進(jin)(jin)行(xing)(xing)集中工(gong)(gong)廠(chang)化(hua)生(sheng)產,生(sheng)產周期短(duan),實(shi)(shi)用(yong)于質(zhi)(zhi)量要求(qiu)高,工(gong)(gong)期緊,基礎(chu)差(cha)的工(gong)(gong)程項目。鋼(gang)波紋(wen)涵管(guan)施(shi)工(gong)(gong)中只(zhi)需要對基礎(chu)進(jin)(jin)行(xing)(xing)砂(sha)礫回填處理,對進(jin)(jin)出口進(jin)(jin)行(xing)(xing)混凝(ning)土(tu)或(huo)砌石(shi)施(shi)工(gong)(gong)處理,對砂(sha)、石(shi)材、鋼(gang)筋(jin)等用(yong)量小(xiao),非常實(shi)(shi)用(yong)于砂(sha)石(shi)缺乏的地(di)區(qu)。鋼(gang)波紋(wen)涵管(guan)在出廠(chang)前(qian)應嚴(yan)格按鋼(gang)質(zhi)(zhi)波紋(wen)板加工(gong)(gong)驗(yan)收標(biao)(biao)準進(jin)(jin)行(xing)(xing)驗(yan)收,并進(jin)(jin)行(xing)(xing)必要的預拼裝。鋼(gang)波紋(wen)涵管(guan)施(shi)工(gong)(gong)時(shi)對周圍環(huan)(huan)境(jing)的破壞小(xiao),適用(yong)于生(sheng)態環(huan)(huan)境(jing)脆弱的地(di)區(qu)。
橋梁鋼波紋涵(han)管(guan)對(dui)周圍(wei)生(sheng)態環境(jing)如何進(jin)行(xing)保(bao)護?
鋼波(bo)(bo)紋(wen)(wen)管(guan)涵洞技術(shu)不僅具(ju)(ju)有施工周期短、適應能(neng)力強(qiang)、地基承載力要求低的(de)特點,而(er)且具(ju)(ju)有較(jiao)強(qiang)的(de)耐性(xing),可以大大減少施工的(de)時間,因(yin)而(er)這種技術(shu)被(bei)運(yun)用。必須采用有效措施,確保鋼波(bo)(bo)紋(wen)(wen)管(guan)回填土質(zhi)量。鋼波(bo)(bo)紋(wen)(wen)涵管(guan)在安裝時,拼接處必須清理干凈。以確保拼縫搭(da)接緊密。
鋼(gang)波(bo)紋(wen)管涵具(ju)有施工(gong)工(gong)期短、重量輕(qing)、安裝方便、耐久性能好、工(gong)程造價低、抗變(bian)形能力強、減少養護(hu)費用(yong)(yong)(yong)成本(ben)等優點。鋼(gang)波(bo)紋(wen)涵管使用(yong)(yong)(yong)范圍:基本(ben)要(yao)求:高強螺栓緊固后,在二次防腐處理(li)前,應在搭(da)接處用(yong)(yong)(yong)密封防水材料(或熱(re)瀝青)涂(tu)裝。
拼接波(bo)紋管涵(han)
具有較大的抗變形能力和抗沉降(jiang)能力,特別適(shi)合(he)于軟土、膨(peng)脹(zhang)土、濕(shi)陷性黃土等地(di)基(ji)承載力較低的地(di)區和地(di)震(zhen)多發地(di)區。鋼(gang)質波(bo)紋板通道現場拼裝(zhuang),必(bi)須嚴格。按設計(ji)以及鋼(gang)質波(bo)紋板通道施(shi)工(gong)安裝(zhuang)規(gui)范的要求施(shi)工(gong)。鋼(gang)波(bo)紋涵(han)管作(zuo)為一種新型技術在公路涵(han)洞(dong)工(gong)程(cheng)施(shi)工(gong)中的具有很大的優勢。
基礎的(de)(de)地基承載力必須滿足沒計要(yao)求,嚴禁超(chao)挖(wa)回填虛土(tu)超(chao)過以及標高控制。波紋(wen)(wen)鋼(gang)板安裝鋪設應(ying)平(ping)順、穩(wen)固、管(guan)(guan)底坡(po)度不(bu)得出(chu)現反坡(po),管(guan)(guan)涵(han)內不(bu)得有(you)泥土(tu)、磚石等雜(za)物。鋼(gang)波紋(wen)(wen)涵(han)管(guan)(guan)是一(yi)種柔性(xing)結構,波紋(wen)(wen)管(guan)(guan)涵(han)在結構上具有(you)橫向(xiang)補償位移(yi)的(de)(de)優(you)(you)良特性(xing),可以充分發揮鋼(gang)材抗拉性(xing)能(neng)強、抗變(bian)形能(neng)力優(you)(you)越(yue)的(de)(de)特點。
鋼波紋涵(han)(han)管(guan)(guan)的優點:鋼波紋涵(han)(han)管(guan)(guan)單(dan)體出(chu)廠(chang)時,必(bi)須附有(you)(you)產(chan)品質量(liang)合(he)(he)格證書(shu),沒有(you)(you)合(he)(he)格證書(shu)的一律不能(neng)出(chu)廠(chang)。鋼波紋涵(han)(han)管(guan)(guan)從材料(liao)與結(jie)構和功能(neng)的本質關系上分析,采用柔(rou)性(xing)高強度(du)的鋼波紋管(guan)(guan)涵(han)(han)洞由于軸向波紋的存在,使其具有(you)(you)優良的受力特征(zheng),軸向和徑(jing)向同時分布(bu)因荷載(zai)引(yin)起的應(ying)力應(ying)變,可以更大程度(du)上分散荷載(zai)的應(ying)力集中,更好(hao)地發揮鋼結(jie)構的優勢。
由于鋼波紋(wen)涵管施工(gong)簡單且施工(gong)工(gong)期短(duan)(一(yi)般一(yi)道涵洞的施工(gong)時(shi)間(jian)(jian)大約在10天(tian)-15天(tian)左(zuo)右)縮短(duan)了(le)多(duo)年凍(dong)土(tu)的裸露時(shi)間(jian)(jian),凍(dong)融量(liang)小(xiao),故特別適用于多(duo)年凍(dong)土(tu)地(di)區。鋼波紋(wen)涵管運(yun)到施工(gong)現場后(hou),必須逐塊檢查,凡在運(yun)輸過程中變形的鋼板不得使用。(hanihanbj.com)
分享此文章: |