幕墻一貫反應用于我國各地公路舉措措施建設當中。金屬波紋管涵投入到了青海公路施工當中,三年的實踐證實,鋼波紋管在北方嚴寒地區完全符合(he)公路建設當中的涵洞施工要求。
鋼波紋管在嚴寒地區完全符合施工要求
跟(gen)著波(bo)(bo)紋(wen)管涵(han)在世界(jie)各地的安裝使用(yong),證(zheng)實了(le)(le)此種(zhong)(zhong)結構在各種(zhong)(zhong)使用(yong)情況(kuang)下的通用(yong)性。在我國改革開放后,深圳及大同煤礦開始從國外入口成品(pin)波(bo)(bo)紋(wen)管涵(han)進行(xing)涵(han)洞施(shi)工(gong)。之后,上海市公路治理處、上海市政(zheng)工(gong)程設(she)計(ji)研究院、上海同濟(ji)大學對金屬波(bo)(bo)紋(wen)管涵(han)進行(xing)了(le)(le)動、靜載試(shi)驗,結果表明(ming)能知足設(she)計(ji)使用(yong)要求(qiu),填補了(le)(le)海內(nei)的空(kong)缺(que),且(qie)迅速得到推廣(guang)應用(yong)。
公(gong)路(lu)工(gong)程的涵(han)(han)洞(dong)一般采(cai)用(yong)金(jin)(jin)(jin)屬筋混凝土(tu)(tu)制作。現(xian)采(cai)用(yong)金(jin)(jin)(jin)屬波(bo)紋(wen)管(guan)(guan)(guan)涵(han)(han)代(dai)替金(jin)(jin)(jin)屬筋混凝土(tu)(tu)進(jin)行涵(han)(han)洞(dong)施(shi)工(gong)在(zai)海內時一項新技(ji)術,金(jin)(jin)(jin)屬波(bo)紋(wen)管(guan)(guan)(guan)涵(han)(han)以(yi)其機能不(bu)亂、安裝利便、有利環保、造價低等長(chang)處(chu)迅速(su)在(zai)公(gong)路(lu)施(shi)工(gong)中(zhong)代(dai)替了(le)金(jin)(jin)(jin)屬筋混凝土(tu)(tu)施(shi)工(gong)的涵(han)(han)洞(dong),發展遠景非常廣闊(kuo)。在(zai)公(gong)路(lu)施(shi)工(gong)中(zhong),應用(yong)金(jin)(jin)(jin)屬波(bo)紋(wen)管(guan)(guan)(guan)涵(han)(han)代(dai)替金(jin)(jin)(jin)屬筋混凝土(tu)(tu)進(jin)行涵(han)(han)洞(dong)施(shi)工(gong)的歷(li)史已經有100多(duo)年(nian)了(le)。1896年(nian),美國率提(ti)高前(qian)輩行波(bo)紋(wen)管(guan)(guan)(guan)涵(han)(han)通道、涵(han)(han)管(guan)(guan)(guan)的可行性研(yan)究。其后,在(zai)美國、加拿大、澳大利亞等國的公(gong)路(lu)建設中(zhong),均采(cai)用(yong)了(le)金(jin)(jin)(jin)屬波(bo)紋(wen)管(guan)(guan)(guan)涵(han)(han)進(jin)行涵(han)(han)洞(dong)的施(shi)工(gong)。1990年(nian),日本高速(su)公(gong)路(lu)設計,規(gui)范(fan)制定了(le)波(bo)紋(wen)管(guan)(guan)(guan)涵(han)(han)設計技(ji)術規(gui)范(fan)。
金(jin)屬(shu)波紋(wen)管(guan)(guan)(guan)涵(han)(han)(han)是(shi)將(jiang)薄金(jin)屬(shu)板板面(mian)壓(ya)成波紋(wen)后,卷制成管(guan)(guan)(guan)節(jie)(jie),可以增加管(guan)(guan)(guan)節(jie)(jie)的(de)(de)剛度和對(dui)管(guan)(guan)(guan)軸(zhou)壓(ya)力的(de)(de)抵(di)擋強度;出廠(chang)前采用(yong)(yong)熱浸鍍(du)鋅工(gong)(gong)藝(yi)和施(shi)工(gong)(gong)現場(chang)噴涂瀝(li)青(qing),雙(shuang)層防腐處理保(bao)證(zheng)了(le)使用(yong)(yong)壽(shou)命;用(yong)(yong)此種(zhong)管(guan)(guan)(guan)節(jie)(jie)修建的(de)(de)涵(han)(han)(han)洞(dong)(dong)被稱為波紋(wen)金(jin)屬(shu)管(guan)(guan)(guan)涵(han)(han)(han)。實踐證(zheng)實,用(yong)(yong)金(jin)屬(shu)波紋(wen)管(guan)(guan)(guan)涵(han)(han)(han)代替金(jin)屬(shu)筋(jin)混凝(ning)土進行涵(han)(han)(han)洞(dong)(dong)施(shi)工(gong)(gong),不管(guan)(guan)(guan)從施(shi)工(gong)(gong)周期、施(shi)工(gong)(gong)造(zao)價、環保(bao)意義等方(fang)面(mian)都(dou)有(you)其(qi)不可相比的(de)(de)優勝性(xing),且用(yong)(yong)金(jin)屬(shu)波紋(wen)管(guan)(guan)(guan)涵(han)(han)(han)進行涵(han)(han)(han)洞(dong)(dong)施(shi)工(gong)(gong),可大大進步道(dao)路(lu)行車的(de)(de)恬靜度與安全(quan)性(xing),避免道(dao)路(lu)中(zhong)涵(han)(han)(han)洞(dong)(dong)的(de)(de)“錯臺(tai)跳車”現形,有(you)利(li)于解決西北地區嚴(yan)寒霜凍對(dui)砼管(guan)(guan)(guan)涵(han)(han)(han)結構的(de)(de)破壞題目。
波(bo)(bo)(bo)(bo)紋(wen)(wen)管(guan)設計計算(suan)的(de)(de)參(can)數(shu)為剛(gang)(gang)度(du)(du)、應(ying)力(li)、有效面積、失穩、答應(ying)位移(yi)(yi)、耐壓力(li)和使(shi)用壽命。波(bo)(bo)(bo)(bo)紋(wen)(wen)管(guan)的(de)(de)剛(gang)(gang)度(du)(du)計算(suan),波(bo)(bo)(bo)(bo)紋(wen)(wen)管(guan)的(de)(de)剛(gang)(gang)度(du)(du)按照載荷(he)及(ji)位移(yi)(yi)性質不同,分(fen)為軸(zhou)向剛(gang)(gang)度(du)(du)、彎曲剛(gang)(gang)度(du)(du)、扭(niu)轉剛(gang)(gang)度(du)(du)等。目前在波(bo)(bo)(bo)(bo)紋(wen)(wen)管(guan)的(de)(de)應(ying)用中,絕大多數(shu)的(de)(de)受力(li)情況是軸(zhou)向載荷(he),位移(yi)(yi)方式為線(xian)位移(yi)(yi)。
根據鋼波紋管的結構(gou)特點(dian),可以(yi)把波紋管(guan)當作圓環(huan)殼(ke)(ke)、扁(bian)錐殼(ke)(ke)或圓環(huan)板所(suo)組成。設計計算波紋管(guan)也就是(shi)設計計算圓外(wai)殼(ke)(ke)、扁(bian)錐殼(ke)(ke)或團環(huan)板。
金屬波(bo)紋(wen)(wen)管(guan)(guan)(guan)設(she)計(ji)的(de)(de)(de)理論基礎是(shi)板殼理論、材(cai)料(liao)力學、計(ji)算數學等。波(bo)紋(wen)(wen)管(guan)(guan)(guan)設(she)計(ji)的(de)(de)(de)參數較多,因為波(bo)紋(wen)(wen)管(guan)(guan)(guan)在系統中的(de)(de)(de)用(yong)途不同,其設(she)計(ji)計(ji)算的(de)(de)(de)重點也不一(yi)樣。例如,波(bo)紋(wen)(wen)管(guan)(guan)(guan)用(yong)于力平衡元件,要求波(bo)紋(wen)(wen)管(guan)(guan)(guan)在工(gong)作(zuo)(zuo)范圍內其有效面積不變(bian)或變(bian)化很(hen)小,用(yong)于丈量元件,要求波(bo)紋(wen)(wen)管(guan)(guan)(guan)的(de)(de)(de)彈(dan)性特性是(shi)線性的(de)(de)(de);用(yong)于真(zhen)空開關(guan)管(guan)(guan)(guan)作(zuo)(zuo)真(zhen)空密(mi)(mi)封件,要求波(bo)紋(wen)(wen)管(guan)(guan)(guan)的(de)(de)(de)真(zhen)空密(mi)(mi)封性、軸向位移量和(he)疲憊壽(shou)(shou)命(ming);用(yong)于閥門作(zuo)(zuo)密(mi)(mi)封件,要求波(bo)紋(wen)(wen)管(guan)(guan)(guan)應具有一(yi)定的(de)(de)(de)耐(nai)壓力、耐(nai)侵蝕、耐(nai)溫度、工(gong)作(zuo)(zuo)位移和(he)疲憊壽(shou)(shou)命(ming)。
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