更大壓縮長度在外力作用下,鋼波紋涵管被壓(ya)縮到波(bo)(bo)(bo)紋(wen)(wen)之間彼此互相緊密(mi)接觸時(shi)的(de)(de)(de)長度。更(geng)(geng)(geng)大(da)壓(ya)縮位(wei)(wei)(wei)移(yi) 金(jin)屬波(bo)(bo)(bo)紋(wen)(wen)涵管(guan)(guan)(guan)壓(ya)縮到波(bo)(bo)(bo)紋(wen)(wen)之間相互緊密(mi)接觸時(shi)所(suo)能(neng)產生的(de)(de)(de)更(geng)(geng)(geng)大(da)位(wei)(wei)(wei)移(yi)。當波(bo)(bo)(bo)紋(wen)(wen)涵管(guan)(guan)(guan)達到更(geng)(geng)(geng)大(da)壓(ya)縮位(wei)(wei)(wei)移(yi)時(shi),往往已(yi)產生了塑性(xing)變形,所(suo)以工作(zuo)時(shi)不(bu)答(da)應(ying)達到這一數值。答(da)應(ying)位(wei)(wei)(wei)移(yi)和(he)工作(zuo)位(wei)(wei)(wei)移(yi) 金(jin)屬波(bo)(bo)(bo)紋(wen)(wen)涵管(guan)(guan)(guan)不(bu)產生塑性(xing)變形情況下所(suo)能(neng)達到的(de)(de)(de)更(geng)(geng)(geng)大(da)位(wei)(wei)(wei)移(yi)稱答(da)應(ying)位(wei)(wei)(wei)移(yi),而工作(zuo)過(guo)程的(de)(de)(de)更(geng)(geng)(geng)大(da)位(wei)(wei)(wei)移(yi)你工作(zuo)位(wei)(wei)(wei)移(yi)。為了保證波(bo)(bo)(bo)紋(wen)(wen)涵管(guan)(guan)(guan)在整個工作(zuo)過(guo)程中機能(neng)不(bu)亂(luan)可靠和(he)較高的(de)(de)(de)使(shi)用(yong)壽命,工作(zuo)位(wei)(wei)(wei)移(yi)般取答(da)應(ying)位(wei)(wei)(wei)移(yi)的(de)(de)(de)40%~50%。
鋼波(bo)紋涵管被壓(ya)縮到波(bo)紋之(zhi)間(jian)彼此互相緊密接觸(chu)時的長度
耐壓(ya)(ya)(ya)力(li)(li)和工(gong)(gong)作(zuo)壓(ya)(ya)(ya)力(li)(li)大(da)(da)直(zhi)徑波(bo)紋(wen)(wen)管在保持(chi)不(bu)(bu)亂狀態或不(bu)(bu)產生塑性(xing)變形(如波(bo)距平均性(xing)不(bu)(bu)破壞,波(bo)紋(wen)(wen)不(bu)(bu)歪斜等)前提下,能承受的更大(da)(da)靜(jing)壓(ya)(ya)(ya)力(li)(li)稱波(bo)紋(wen)(wen)涵(han)管的耐壓(ya)(ya)(ya)力(li)(li)。而工(gong)(gong)作(zuo)壓(ya)(ya)(ya)力(li)(li)指在整個工(gong)(gong)作(zuo)過程中,承受的更大(da)(da)玉力(li)(li)為了保證波(bo)紋(wen)(wen)涵(han)管工(gong)(gong)作(zuo)時機能不(bu)(bu)亂可靠和具有較高(gao)的使用壽命,工(gong)(gong)作(zuo)壓(ya)(ya)(ya)力(li)(li)一般取耐壓(ya)(ya)(ya)力(li)(li)的40%~50%。
焊接(jie)材料(liao)焊接(jie)材料(liao)號(hao)(hao)采用的型號(hao)(hao)應(ying)符(fu)合GB/T122467.1的要求。密封材料(liao)管(guan)箍(gu)與管(guan)節(jie)之(zhi)(zhi)間、法蘭盤之(zhi)(zhi)間、翻邊接(jie)合面(mian)之(zhi)(zhi)間以及搭接(jie)的波紋(wen)鋼板(ban)件之(zhi)(zhi)間采取(qu)密封措(cuo)施(shi)。密封料(liao)應(ying)具(ju)有彈性(xing)和不透(tou)水性(xing),并應(ying)填塞緊(jin)密。低(di)溫(wen)前提下密封材料(liao)應(ying)具(ju)有良好的抗(kang)凍、耐寒機能。密封料(liao)可采用自然橡膠、聚乙(yi)烯(xi)泡沫或耐候密封膠。
連(lian)接件連(lian)接件采(cai)用(yong)扭剪(jian)型(xing)高(gao)強(qiang)(qiang)度螺栓、螺母(mu),強(qiang)(qiang)度等級不(bu)低(di)于8.8級,其機能指標應符合GB/T1231的(de)(de)要求(qiu)。高(gao)強(qiang)(qiang)度螺栓、螺母(mu)規格(ge)為(wei)M12、M16、M20,螺栓長度宜為(wei)30mm—60mm。結(jie)構(gou)用(yong)高(gao)強(qiang)(qiang)度墊圈(quan)應符合GB/T1231的(de)(de)要求(qiu)。管(guan)箍(gu)、法蘭盤(pan)的(de)(de)材料采(cai)用(yong)碳素結(jie)構(gou)鋼(gang)。其機能應符合GB/T700要求(qiu),抗拉強(qiang)(qiang)度不(bu)小于350MPa。法蘭盤(pan)用(yong)角鋼(gang)尺寸(cun)、重(zhong)量及答應偏差應符合GB/T 706 的(de)(de)劃定。
螺旋波紋鋼圓管、環形波紋鋼圓管、波紋鋼板件的材料采用碳素結構鋼時,其機能應符合GT/T 700要求,抗拉強度不小于350MPa。鋼波紋涵管用的鋼(gang)(gang)(gang)板、鋼(gang)(gang)(gang)帶(dai)應(ying)符(fu)合(he)GB 912或GB/T 3274的劃定(ding),其(qi)尺寸、形(xing)狀、重量及(ji)答(da)應(ying)偏(pian)差(cha)應(ying)符(fu)合(he)GB/T709的劃定(ding)。采(cai)用連(lian)續熱鍍鋅鋼(gang)(gang)(gang)板及(ji)鋼(gang)(gang)(gang)帶(dai)加(jia)工(gong)波紋(wen)鋼(gang)(gang)(gang)圓管(guan)、波紋(wen)鋼(gang)(gang)(gang)板件時,其(qi)機能(neng)、尺寸、形(xing)狀、重量及(ji)答(da)應(ying)偏(pian)差(cha)應(ying)符(fu)合(he)GB/T 2518劃定(ding),抗(kang)拉強度不小于350 MPa。
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