對U形(xing)波(bo)(bo)(bo)進(jin)行二次擠壓,避開波(bo)(bo)(bo)谷(gu)的(de)(de)圓角(jiao),首先(xian)擠壓與波(bo)(bo)(bo)谷(gu)相(xiang)連的(de)(de)寬(kuan)的(de)(de)位(wei)置,擠壓過(guo)程(cheng)中波(bo)(bo)(bo)峰(feng)圓角(jiao)與波(bo)(bo)(bo)谷(gu)圓角(jiao)相(xiang)連的(de)(de)部分在靠近波(bo)(bo)(bo)谷(gu)的(de)(de)一側逐漸內凹,形(xing)成S形(xing)波(bo)(bo)(bo),此時波(bo)(bo)(bo)峰(feng)圓角(jiao)有減(jian)小的(de)(de)趨勢,波(bo)(bo)(bo)紋(wen)外(wai)徑有升高的(de)(de)趨勢,終的(de)(de)波(bo)(bo)(bo)寬(kuan)及(ji)波(bo)(bo)(bo)間距是(shi)(shi)由模具(ju)控(kong)制(zhi)的(de)(de),此時得到是(shi)(shi)S形(xing)波(bo)(bo)(bo)。混凝土運送車(che)輛要有保溫辦法,盡量縮短砼(tong)的(de)(de)運送時刻。
參加金(jin)屬鋼波紋涵管施工(gong)(gong)(gong)人(ren)員(yuan)(yuan)要熟知本(ben)工(gong)(gong)(gong)種(zhong)的安(an)全操作(zuo)規(gui)程(cheng),堅守崗(gang)位。特別工(gong)(gong)(gong)種(zhong)人(ren)員(yuan)(yuan)如電(dian)工(gong)(gong)(gong)、電(dian)焊工(gong)(gong)(gong)、混凝土工(gong)(gong)(gong)、起重工(gong)(gong)(gong)等施工(gong)(gong)(gong)人(ren)員(yuan)(yuan),有(you)必(bi)要通過(guo)專門(men)訓(xun)練,熟練掌握(wo)操作(zuo)要求,嚴格執行本(ben)工(gong)(gong)(gong)種(zhong)的安(an)全操作(zuo)規(gui)程(cheng),有(you)必(bi)要隨身攜帶有(you)關證件(jian)(或復印件(jian))上崗(gang)備檢。
學(xue)習了(le)解一下鋼波(bo)紋涵管的安全操作(zuo)規程
添加(jia)砂、石(shi)料含水量(liang)檢測頻(pin)率,及(ji)時調整(zheng)混(hun)凝土(tu)合作比,確保(bao)混(hun)凝土(tu)拌和(he)質量(liang)。各種電(dian)氣設備(bei)作業(ye)和(he)漏電(dian)維護設備(bei),不(bu)準隨意轉換(huan)裝(zhuang)置方法,特別關于施作業(ye)業(ye)的(de)投光燈,裝(zhuang)接作業(ye),一(yi)(yi)點不(bu)準馬虎、一(yi)(yi)點點不(bu)能漏電(dian),確保(bao)安(an)全。所(suo)有簡(jian)單(dan)碰(peng)砸(za)的(de)電(dian)氣設備(bei)加(jia)裝(zhuang)防護罩(zhao)或遮欄,避免碰(peng)傷(shang)風險。
橋梁鋼波(bo)紋管
應(ying)對金屬波(bo)紋涵(han)管等加強掩蓋(gai),避(bi)(bi)免(mian)銹蝕。進行(xing)金屬波(bo)紋涵(han)管銜接(jie)(jie)時,應(ying)設暫時防(fang)雨棚,避(bi)(bi)免(mian)被(bei)雨水腐蝕。焊接(jie)(jie)時環境溫(wen)度(du)應(ying)不低于-20℃,且(qie)應(ying)采納防(fang)雪(xue)、擋風等辦法,減(jian)少焊件的(de)溫(wen)度(du)差。焊接(jie)(jie)后(hou)的(de)接(jie)(jie)頭禁(jin)止當(dang)即觸摸冰雪(xue)。
混凝土(tu)澆筑應挑選天氣晴好的日子(zi),并確保降(jiang)溫前(qian)完結(jie),一起應進行保溫維護,在混凝土(tu)強度達(da)到設(she)計要求(qiu)前(qian)不(bu)得受凍。施工過程中,嚴格遵守(shou)操(cao)作規(gui)矩,謹防落物傷人及掉落事端。雨期施工應提早安排(pai),盡量(liang)安排(pai)在降(jiang)雨降(jiang)臨前(qian)完結(jie),基坑(keng)周邊有防水設(she)備,避免(mian)周邊水流入基坑(keng)內。
電器(qi)有必要由專職電工(gong)(gong)裝置和修補(bu),設(she)置標(biao)志,禁止酒(jiu)后施工(gong)(gong)。應特別注意做(zuo)好供電線路維(wei)護,現場機電設(she)備(bei)的電閘(zha)箱應采納隱瞞(man)、防(fang)潮辦法,電線做(zuo)到絕緣杰出(chu),避免漏觸電事端發(fa)生。混凝土出(chu)機溫度(du)不(bu)宜低于10℃,其(qi)運(yun)送設(she)備(bei)應有保溫辦法,且應更(geng)大極限地縮短(duan)運(yun)送時刻,入模溫度(du)應不(bu)低于5℃。
搭設(she)鋼(gang)(gang)波紋管(guan)施(shi)工(gong)(gong)支(zhi)架(jia)(jia)要(yao)隨時查看支(zhi)架(jia)(jia)的安穩性(xing),而且(qie)加固。支(zhi)架(jia)(jia)完(wan)結(jie)后,要(yao)查看、驗(yan)算支(zhi)架(jia)(jia)的承力,滿意承載要(yao)求(qiu)后再進行(xing)(xing)上部施(shi)工(gong)(gong)。雨期鋼(gang)(gang)波紋管(guan)施(shi)工(gong)(gong)辦法:開工(gong)(gong)前各(ge)種機(ji)具設(she)備有必要(yao)進行(xing)(xing)檢修、試運行(xing)(xing),使之處于(yu)無缺、正常作業(ye)狀態,并定時檢修保養。
冬(dong)期拌(ban)(ban)和混凝(ning)土時(shi)(shi)應嚴格(ge)操控混凝(ning)土的合作比(bi)和坍(tan)落度,集料(liao)(liao)(liao)不得帶有冰(bing)雪(xue)和凍住(zhu)團塊(kuai)。投(tou)料(liao)(liao)(liao)前,應先選用熱水(shui)或(huo)蒸汽沖刷(shua)拌(ban)(ban)和機拌(ban)(ban)盤或(huo)鼓筒(tong)。加料(liao)(liao)(liao)順(shun)序應先為集料(liao)(liao)(liao)、水(shui),稍加拌(ban)(ban)和后(hou)再加入水(shui)泥,且拌(ban)(ban)和時(shi)(shi)刻應比(bi)常溫時(shi)(shi)延長50%。(hanihanbj.com)
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