鋼波紋管液壓(ya)成(cheng)(cheng)形(xing)工藝的(de)樞(shu)紐是階(jie)段(duan)的(de)成(cheng)(cheng)形(xing)壓(ya)力和脹形(xing)程(cheng)(cheng)(cheng)度(du)(du)，通過成(cheng)(cheng)形(xing)壓(ya)力來控制脹形(xing)程(cheng)(cheng)(cheng)度(du)(du)，假(jia)如(ru)脹形(xing)程(cheng)(cheng)(cheng)度(du)(du)較大，管材(cai)輕易破裂，假(jia)如(ru)脹形(xing)程(cheng)(cheng)(cheng)度(du)(du)太小(xiao)，脹形(xing)沒有起到軸向定位作用，成(cheng)(cheng)型(xing)之后的(de)波(bo)(bo)紋管波(bo)(bo)紋不(bu)齊，成(cheng)(cheng)品率比較低。

拼裝鋼波紋管的運輸優勢還是非常明顯的

鋼波紋管液(ye)壓(ya)成(cheng)(cheng)(cheng)型屬于極(ji)薄壁管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)液(ye)壓(ya)復(fu)合(he)脹(zhang)形(xing)(xing)(xing)(xing)，是軟模(mo)(mo)(mo)(mo)成(cheng)(cheng)(cheng)型技術(shu)的(de)(de)(de)(de)一種。它以液(ye)壓(ya)流(liu)體(ti)(ti)為軟模(mo)(mo)(mo)(mo)，以成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)凹模(mo)(mo)(mo)(mo)為硬模(mo)(mo)(mo)(mo)。液(ye)壓(ya)脹(zhang)形(xing)(xing)(xing)(xing)主(zhu)要有兩個階(jie)段(duan)(duan)，脹(zhang)形(xing)(xing)(xing)(xing)的(de)(de)(de)(de)階(jie)段(duan)(duan)，管(guan)(guan)(guan)(guan)材(cai)兩端和(he)成(cheng)(cheng)(cheng)型模(mo)(mo)(mo)(mo)具(ju)(ju)(ju)都固定不動，極(ji)薄壁管(guan)(guan)(guan)(guan)在(zai)(zai)模(mo)(mo)(mo)(mo)具(ju)(ju)(ju)的(de)(de)(de)(de)限制(zhi)和(he)管(guan)(guan)(guan)(guan)內(nei)的(de)(de)(de)(de)液(ye)體(ti)(ti)壓(ya)力的(de)(de)(de)(de)作用(yong)下(xia)進(jin)(jin)行徑向(xiang)膨(peng)脹(zhang)。脹(zhang)形(xing)(xing)(xing)(xing)的(de)(de)(de)(de)程(cheng)度(du)比較小，其目的(de)(de)(de)(de)就是讓成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)模(mo)(mo)(mo)(mo)具(ju)(ju)(ju)在(zai)(zai)管(guan)(guan)(guan)(guan)材(cai)上軸向(xiang)定位。成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)的(de)(de)(de)(de)第二個階(jie)段(duan)(duan)，管(guan)(guan)(guan)(guan)材(cai)在(zai)(zai)內(nei)壓(ya)力和(he)軸向(xiang)壓(ya)力的(de)(de)(de)(de)復(fu)合(he)作用(yong)下(xia)，進(jin)(jin)一步進(jin)(jin)行脹(zhang)形(xing)(xing)(xing)(xing)。在(zai)(zai)此(ci)階(jie)段(duan)(duan)，在(zai)(zai)軸向(xiang)力的(de)(de)(de)(de)作用(yong)下(xia)，成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)凹模(mo)(mo)(mo)(mo)進(jin)(jin)行軸向(xiang)移動，知道各(ge)個成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)凹模(mo)(mo)(mo)(mo)相(xiang)互貼合(he)在(zai)(zai)一起(qi)，成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)完畢。在(zai)(zai)此(ci)階(jie)段(duan)(duan)，管(guan)(guan)(guan)(guan)材(cai)軸向(xiang)縮(suo)短，在(zai)(zai)波(bo)(bo)紋(wen)(wen)(wen)處徑向(xiang)擴(kuo)脹(zhang)。根據金屬成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)原理，金屬在(zai)(zai)塑(su)性成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)過程(cheng)中體(ti)(ti)積不變(bian)，波(bo)(bo)紋(wen)(wen)(wen)管(guan)(guan)(guan)(guan)徑向(xiang)擴(kuo)脹(zhang)需要的(de)(de)(de)(de)材(cai)料(liao)通過管(guan)(guan)(guan)(guan)材(cai)軸向(xiang)縮(suo)短來增(zeng)補，而軸向(xiang)加(jia)壓(ya)的(de)(de)(de)(de)脹(zhang)形(xing)(xing)(xing)(xing)就是促進(jin)(jin)這種材(cai)料(liao)轉(zhuan)移的(de)(de)(de)(de)順利進(jin)(jin)行。軸向(xiang)加(jia)壓(ya)的(de)(de)(de)(de)脹(zhang)形(xing)(xing)(xing)(xing)可以進(jin)(jin)步材(cai)料(liao)的(de)(de)(de)(de)脹(zhang)形(xing)(xing)(xing)(xing)程(cheng)度(du)，可以成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)波(bo)(bo)紋(wen)(wen)(wen)深度(du)較深的(de)(de)(de)(de)波(bo)(bo)紋(wen)(wen)(wen)管(guan)(guan)(guan)(guan)，可以進(jin)(jin)步波(bo)(bo)紋(wen)(wen)(wen)管(guan)(guan)(guan)(guan)的(de)(de)(de)(de)成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)率(lv)。同(tong)時(shi)液(ye)壓(ya)成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)的(de)(de)(de)(de)變(bian)形(xing)(xing)(xing)(xing)也比較平(ping)均，并能(neng)獲得良好的(de)(de)(de)(de)表面質量。正由于具(ju)(ju)(ju)有上述良多長處，液(ye)壓(ya)成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)才能(neng)成(cheng)(cheng)(cheng)為金屬波(bo)(bo)紋(wen)(wen)(wen)管(guan)(guan)(guan)(guan)成(cheng)(cheng)(cheng)形(xing)(xing)(xing)(xing)的(de)(de)(de)(de)主(zhu)流(liu)技術(shu)。

實踐(jian)證實，用(yong)鋼波(bo)紋管涵代(dai)替(ti)鋼筋混凝土(tu)進(jin)(jin)行涵洞施(shi)工(gong)，不管從施(shi)工(gong)周期、施(shi)工(gong)造價(jia)、環保意義等方面(mian)都(dou)有(you)其(qi)不可(ke)相比的(de)優(you)勝性，且用(yong)金屬波(bo)紋管涵進(jin)(jin)行涵洞施(shi)工(gong)，可(ke)大大進(jin)(jin)步道路行車的(de)恬靜(jing)度與安(an)全性，避免道路中涵洞的(de)“錯臺跳(tiao)車”現形，有(you)利于解(jie)決西北地區嚴寒霜凍對砼(tong)管涵結構的(de)破(po)壞題目。

跟(gen)著(zhu)鋼(gang)波(bo)紋(wen)管(guan)(guan)涵(han)在世界(jie)各地的(de)安(an)裝使(shi)用(yong)，證實(shi)(shi)了此種結構在各種使(shi)用(yong)情況(kuang)下的(de)通用(yong)性。在我國改(gai)革開(kai)放后(hou)，深圳及大同煤(mei)礦開(kai)始從國外入口(kou)成品(pin)鋼(gang)波(bo)紋(wen)管(guan)(guan)涵(han)進(jin)行涵(han)洞(dong)施工(gong)(gong)(gong)。之后(hou)，上海市公路(lu)(lu)治理處(chu)、上海市政工(gong)(gong)(gong)程設計研究院、上海同濟大學對(dui)鋼(gang)波(bo)紋(wen)管(guan)(guan)涵(han)進(jin)行了動、靜載試驗(yan)，結果表明(ming)能(neng)知足設計使(shi)用(yong)要求(qiu)，填補了海內(nei)的(de)空缺，且(qie)迅速(su)得到推廣應(ying)用(yong)。幕墻一(yi)貫反應(ying)用(yong)于我國各地公路(lu)(lu)舉措(cuo)措(cuo)施建設當(dang)(dang)中。鋼(gang)波(bo)紋(wen)管(guan)(guan)涵(han)投入到了青海公路(lu)(lu)施工(gong)(gong)(gong)當(dang)(dang)中，三(san)年的(de)實(shi)(shi)踐證實(shi)(shi)，鋼(gang)波(bo)紋(wen)管(guan)(guan)涵(han)在北方嚴寒(han)地區完全符合公路(lu)(lu)建設當(dang)(dang)中的(de)涵(han)洞(dong)施工(gong)(gong)(gong)要求(qiu)。

拼裝鋼波紋管

在公(gong)路(lu)施(shi)(shi)工(gong)中(zhong)，應(ying)用鋼波紋(wen)管(guan)(guan)涵(han)(han)(han)代替鋼筋混凝土進行(xing)涵(han)(han)(han)洞施(shi)(shi)工(gong)的(de)(de)歷史已經(jing)有(you)100多年(nian)了。1896年(nian)，美(mei)國率提高前(qian)輩行(xing)鋼波紋(wen)管(guan)(guan)涵(han)(han)(han)通道(dao)、涵(han)(han)(han)管(guan)(guan)的(de)(de)可行(xing)性(xing)研究。其后，在美(mei)國、加(jia)拿大、澳大利亞等國的(de)(de)公(gong)路(lu)建(jian)設(she)(she)中(zhong)，均采(cai)用了鋼波紋(wen)管(guan)(guan)涵(han)(han)(han)進行(xing)涵(han)(han)(han)洞的(de)(de)施(shi)(shi)工(gong)。1990年(nian)，日本高速(su)公(gong)路(lu)設(she)(she)計(ji)，規(gui)范制(zhi)定了鋼波紋(wen)管(guan)(guan)涵(han)(han)(han)設(she)(she)計(ji)技術規(gui)范。

拼裝鋼(gang)(gang)(gang)(gang)波(bo)紋(wen)(wen)管(guan)(guan)是將薄鋼(gang)(gang)(gang)(gang)板(ban)板(ban)面(mian)壓(ya)成波(bo)紋(wen)(wen)后，卷(juan)制(zhi)成管(guan)(guan)節，可以增加管(guan)(guan)節的(de)(de)(de)(de)剛度和對管(guan)(guan)軸(zhou)壓(ya)力的(de)(de)(de)(de)抵擋(dang)強度；出廠(chang)前采用(yong)(yong)熱浸鍍鋅工藝和施工現(xian)(xian)場噴涂瀝青，雙層防腐(fu)處理保(bao)(bao)證了(le)使用(yong)(yong)壽命；用(yong)(yong)此種管(guan)(guan)節修(xiu)建的(de)(de)(de)(de)涵(han)(han)(han)洞(dong)被稱為鋼(gang)(gang)(gang)(gang)波(bo)紋(wen)(wen)管(guan)(guan)涵(han)(han)(han)。實踐證實，用(yong)(yong)鋼(gang)(gang)(gang)(gang)波(bo)紋(wen)(wen)管(guan)(guan)涵(han)(han)(han)代(dai)替(ti)鋼(gang)(gang)(gang)(gang)筋(jin)混(hun)凝(ning)土進(jin)行(xing)涵(han)(han)(han)洞(dong)施工，不管(guan)(guan)從(cong)施工周期、施工造價、環保(bao)(bao)意(yi)義等(deng)方面(mian)都(dou)有其不可相比(bi)的(de)(de)(de)(de)優勝性，且用(yong)(yong)鋼(gang)(gang)(gang)(gang)波(bo)紋(wen)(wen)管(guan)(guan)涵(han)(han)(han)進(jin)行(xing)涵(han)(han)(han)洞(dong)施工，可大(da)大(da)進(jin)步道路行(xing)車的(de)(de)(de)(de)恬靜度與安全性，避免道路中涵(han)(han)(han)洞(dong)的(de)(de)(de)(de)“錯臺跳車”現(xian)(xian)形，有利(li)于(yu)解決西(xi)北地區嚴(yan)寒霜凍對砼管(guan)(guan)涵(han)(han)(han)結構的(de)(de)(de)(de)破(po)壞(huai)題目。公(gong)路工程的(de)(de)(de)(de)涵(han)(han)(han)洞(dong)一(yi)般采用(yong)(yong)鋼(gang)(gang)(gang)(gang)筋(jin)混(hun)凝(ning)土制(zhi)作。現(xian)(xian)采用(yong)(yong)鋼(gang)(gang)(gang)(gang)波(bo)紋(wen)(wen)管(guan)(guan)涵(han)(han)(han)代(dai)替(ti)鋼(gang)(gang)(gang)(gang)筋(jin)混(hun)凝(ning)土進(jin)行(xing)涵(han)(han)(han)洞(dong)施工在海內時一(yi)項新技術，鋼(gang)(gang)(gang)(gang)波(bo)紋(wen)(wen)管(guan)(guan)涵(han)(han)(han)以其機能不亂、安裝利(li)便、有利(li)環保(bao)(bao)、造價低等(deng)長處迅(xun)速在公(gong)路施工中代(dai)替(ti)了(le)鋼(gang)(gang)(gang)(gang)筋(jin)混(hun)凝(ning)土施工的(de)(de)(de)(de)涵(han)(han)(han)洞(dong)，發(fa)展遠景(jing)非常廣闊。