由鋼波紋涵管外(wai)圓(yuan)弧(hu)波(bo)紋膜片對壓力有線性特性,所以得到的(de)外(wai)圓(yuan)弧(hu)波(bo)紋末膜片的(de)計算結果,還(huan)能用(yong)于膜片受力變(bian)形(xing)較大的(de)情況(kuang)。由此(ci)而擬合出(chu)的(de)設計公式能適應于變(bian)形(xing)較大的(de)情況(kuang)。
鋼波紋涵管的外圓弧波紋末膜片的計算如何運行?
從儀表的(de)結構(gou)的(de)特點來考慮(lv),有(you)些(xie)鋼波(bo)紋(wen)涵管(guan)(guan)的(de)無(wu)外波(bo)紋(wen)。鋼波(bo)紋(wen)涵管(guan)(guan)可分為(wei)有(you)外波(bo)紋(wen)和無(wu)外波(bo)紋(wen)兩種。對于不同的(de)鋼波(bo)紋(wen)涵管(guan)(guan)的(de)計(ji)算也是不一樣的(de)。
實(shi)踐證實(shi),用金屬波紋管(guan)(guan)涵(han)(han)代替金屬筋混凝土進(jin)(jin)行涵(han)(han)洞施(shi)工(gong),不(bu)管(guan)(guan)從施(shi)工(gong)周期、施(shi)工(gong)造價(jia)、環(huan)保意義等(deng)方面(mian)都有其不(bu)可(ke)相比的(de)(de)優勝性,且用金屬波紋管(guan)(guan)涵(han)(han)進(jin)(jin)行涵(han)(han)洞施(shi)工(gong),可(ke)大(da)大(da)進(jin)(jin)步道路(lu)(lu)行車(che)的(de)(de)恬(tian)靜度與安全性,避免道路(lu)(lu)中涵(han)(han)洞的(de)(de)“錯臺(tai)跳車(che)”現(xian)形,有利于(yu)解(jie)決西北地區嚴寒霜凍(dong)對(dui)砼管(guan)(guan)涵(han)(han)結構的(de)(de)破壞題目 。
跟著鋼波紋涵管在(zai)(zai)世界各地的(de)安裝使(shi)用(yong)(yong),證實了(le)此種結(jie)構在(zai)(zai)各種使(shi)用(yong)(yong)情況(kuang)下的(de)通用(yong)(yong)性。在(zai)(zai)我(wo)國改(gai)革開(kai)放后,深圳及大同煤礦(kuang)開(kai)始從國外入口成品波紋(wen)管涵進(jin)行(xing)涵洞(dong)施工(gong)(gong)。之后,上海(hai)市(shi)公(gong)路治理處(chu)、上海(hai)市(shi)政(zheng)工(gong)(gong)程設(she)計研究院、上海(hai)同濟大學對金(jin)屬(shu)波紋(wen)管涵進(jin)行(xing)了(le)動、靜載試驗,結(jie)果表明能知足設(she)計使(shi)用(yong)(yong)要求(qiu),填補(bu)了(le)海(hai)內的(de)空(kong)缺,且迅速(su)得到推(tui)廣應(ying)用(yong)(yong)。幕墻(qiang)一貫(guan)反應(ying)用(yong)(yong)于我(wo)國各地公(gong)路舉措措施建(jian)設(she)當(dang)中(zhong)。金(jin)屬(shu)波紋(wen)管涵投入到了(le)青海(hai)公(gong)路施工(gong)(gong)當(dang)中(zhong),三年的(de)實踐證實,金(jin)屬(shu)波紋(wen)管涵在(zai)(zai)北(bei)方嚴寒地區完全(quan)符合公(gong)路建(jian)設(she)當(dang)中(zhong)的(de)涵洞(dong)施工(gong)(gong)要求(qiu)。
公路(lu)工(gong)(gong)(gong)程的(de)(de)(de)涵洞(dong)(dong)一(yi)般采(cai)用金(jin)(jin)屬筋(jin)混凝(ning)土制作。現采(cai)用金(jin)(jin)屬波紋(wen)管(guan)(guan)涵代替金(jin)(jin)屬筋(jin)混凝(ning)土進(jin)(jin)行涵洞(dong)(dong)施(shi)工(gong)(gong)(gong)在(zai)海內時一(yi)項新技術,金(jin)(jin)屬波紋(wen)管(guan)(guan)涵以其機能不亂、安裝利便、有利環保、造價(jia)低(di)等長處迅速在(zai)公路(lu)施(shi)工(gong)(gong)(gong)中(zhong)(zhong)(zhong)代替了(le)金(jin)(jin)屬筋(jin)混凝(ning)土施(shi)工(gong)(gong)(gong)的(de)(de)(de)涵洞(dong)(dong),發展遠景非常廣闊。在(zai)公路(lu)施(shi)工(gong)(gong)(gong)中(zhong)(zhong)(zhong),應(ying)用金(jin)(jin)屬波紋(wen)管(guan)(guan)涵代替金(jin)(jin)屬筋(jin)混凝(ning)土進(jin)(jin)行涵洞(dong)(dong)施(shi)工(gong)(gong)(gong)的(de)(de)(de)歷史已(yi)經有100多年了(le)。1896年,美國(guo)率提高(gao)前輩行波紋(wen)管(guan)(guan)涵通道、涵管(guan)(guan)的(de)(de)(de)可行性研究(jiu)。其后,在(zai)美國(guo)、加拿大、澳大利亞等國(guo)的(de)(de)(de)公路(lu)建設中(zhong)(zhong)(zhong),均采(cai)用了(le)金(jin)(jin)屬波紋(wen)管(guan)(guan)涵進(jin)(jin)行涵洞(dong)(dong)的(de)(de)(de)施(shi)工(gong)(gong)(gong)。1990年,日本高(gao)速公路(lu)設計,規范制定了(le)波紋(wen)管(guan)(guan)涵設計技術規范。
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