鋼波紋管涵(han)也(ye)叫波(bo)(bo)(bo)紋(wen)涵(han)管(guan)(guan)，是指鋪埋在公路，鐵路下面的涵(han)洞用螺紋(wen)波(bo)(bo)(bo)紋(wen)管(guan)(guan)，它是由波(bo)(bo)(bo)形(xing)(xing)金屬板卷制成(cheng)或用半圓(yuan)波(bo)(bo)(bo)形(xing)(xing)鋼片(pian)拼制成(cheng)的圓(yuan)形(xing)(xing)波(bo)(bo)(bo)紋(wen)管(guan)(guan)，應(ying)用于(yu)公路，鐵路，小(xiao)橋，通道(dao)，擋土墻(qiang)以及各(ge)種礦場(chang)，巷道(dao)擋墻(qiang)支護等工程(cheng)中的涵(han)洞（管(guan)(guan)）。

2021年鋼制波紋管涵疑點重重，該如何入手？

焊(han)接(jie)(jie)(jie)時(shi)(shi)環(huan)境溫度應(ying)(ying)不低于-20，且應(ying)(ying)采納防雪(xue)(xue)、擋風等(deng)措施，減少焊(han)件的(de)溫度差。焊(han)接(jie)(jie)(jie)后(hou)的(de)接(jie)(jie)(jie)頭禁止立(li)即(ji)接(jie)(jie)(jie)觸(chu)冰雪(xue)(xue)。冬期拌(ban)和混(hun)凝(ning)土時(shi)(shi)應(ying)(ying)嚴格控制混(hun)凝(ning)土的(de)合(he)作比和坍落度，集料不得(de)帶有冰雪(xue)(xue)和凍結團塊。投料前，應(ying)(ying)先(xian)選用熱水或蒸汽沖(chong)洗拌(ban)和機拌(ban)盤或鼓筒。

鋼波紋管

加(jia)料次(ci)序應(ying)先為(wei)集料、水，稍加(jia)拌和(he)后再(zai)加(jia)入水泥(ni)，且(qie)拌和(he)時刻應(ying)比(bi)常溫時延(yan)長(chang)50%。對射線探傷，厚度(du)大于(yu)(yu)2mm的鋼板焊縫(feng)，要求(qiu)達到JB4730-94中規則的II級要求(qiu)。管坯壁(bi)厚小于(yu)(yu)2mm時，射線探傷焊縫(feng)缺(que)陷等(deng)級應(ying)為(wei)GB16749-97中附錄(lu)B規則的合(he)格(ge)級。

The feeding sequence shall be aggregate and water first, and then cement shall be added after slight mixing, and the mixing time shall be 50% longer than that at room temperature. For radiographic testing, steel plate welds with a thickness greater than 2mm are required to meet the class II requirements of the rules in jb4730-94. When the wall thickness of the pipe blank is less than 2mm, the defect grade of the weld through radiographic inspection shall be qualified according to the rules in Appendix B of gb16749-97.

2021年鋼波紋管涵疑點重重，該如何入手？

鋼波紋管

上(shang)色浸(jin)透(tou)傷只(zhi)適于管坯厚度(du)不大于2mm的單道焊縫(feng)。檢驗(yan)規范為：不允許(xu)有裂紋等線(xian)狀顯示、四個(ge)或四個(ge)以上(shang)邊距(ju)小(xiao)于1.5mm的成行密集圓形顯示、任(ren)一150mm焊縫(feng)長度(du)內五(wu)個(ge)或五(wu)個(ge)以上(shang)直徑大于1/2管坯厚度(du)的隨機渙散的圓形顯示。

使(shi)用(yong)壽(shou)命(ming)長(chang)(chang)，鋼制(zhi)(zhi)波紋(wen)管(guan)涵是(shi)選(xuan)用(yong)鋼管(guan)熱浸鍍(du)鋅，所以(yi)(yi)使(shi)用(yong)壽(shou)命(ming)長(chang)(chang)，壽(shou)命(ming)為80-100年，在(zai)腐蝕性特別大的(de)環境(jing)下使(shi)用(yong)時，選(xuan)用(yong)表(biao)里(li)外表(biao)瀝清附層的(de)鋼制(zhi)(zhi)波紋(wen)管(guan)，可在(zai)原使(shi)用(yong)壽(shou)命(ming)基礎上進(jin)步約(yue)20年以(yi)(yi)上。施工(gong)(gong)(gong)便利：波紋(wen)管(guan)涵是(shi)選(xuan)用(yong)套筒或法(fa)蘭(lan)方法(fa)銜(xian)接，并且可以(yi)(yi)根(gen)據(ju)需要定制(zhi)(zhi)長(chang)(chang)度，即使(shi)對錯(cuo)熟(shu)練(lian)工(gong)(gong)(gong)也可以(yi)(yi)操作，施工(gong)(gong)(gong)以(yi)(yi)少量的(de)手工(gong)(gong)(gong)操作，可在(zai)短(duan)時刻內完(wan)結，既方便又(you)便利。

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