搭設涵管施工支(zhi)(zhi)架(jia)要(yao)(yao)隨時(shi)檢(jian)(jian)查(cha)支(zhi)(zhi)架(jia)的(de)穩(wen)定性,并(bing)且加固。支(zhi)(zhi)架(jia)完成(cheng)后,要(yao)(yao)檢(jian)(jian)查(cha)、驗(yan)算支(zhi)(zhi)架(jia)的(de)承力,滿(man)足承載(zai)要(yao)(yao)求后再進行(xing)上部施工。參加鋼波紋涵管施(shi)工(gong)(gong)(gong)人員(yuan)要熟(shu)知本(ben)工(gong)(gong)(gong)種(zhong)(zhong)的(de)安(an)全(quan)操(cao)作規程,堅(jian)守(shou)崗(gang)位。特殊工(gong)(gong)(gong)種(zhong)(zhong)人員(yuan)如電(dian)工(gong)(gong)(gong)、電(dian)焊(han)工(gong)(gong)(gong)、混凝土工(gong)(gong)(gong)、起(qi)重工(gong)(gong)(gong)等施(shi)工(gong)(gong)(gong)人員(yuan),必須經過專門培訓,熟(shu)練(lian)掌握(wo)操(cao)作要求(qiu),嚴格(ge)執行(xing)本(ben)工(gong)(gong)(gong)種(zhong)(zhong)的(de)安(an)全(quan)操(cao)作規程,必須隨身(shen)攜帶有(you)關證(zheng)件(或復印件)上崗(gang)備查(cha)。
鋼波紋涵管施工需要用到哪些工種的(de)施工人員?
當HBS>220時,HRC/HBS約等于1/10。波紋涵管硬度也是材料重(zhong)要的力學性(xing)能指標,硬度和(he)強度一(yi)樣,都反映了(le)材料對(dui)塑(su)性(xing)變形的抗力,硬度試(shi)驗方(fang)法較簡單,又不損壞零件,故在生產實踐(jian)中往往通過測定材料的硬度來估算其強度指標。
鐵(tie)路鋼(gang)波紋管
如果當淤泥(ni)4-6米(mi)(mi)深,填土超過10米(mi)(mi),采用(yong)清淤拋石(shi)處理方法(fa),一(yi)(yi)(yi)般清淤深度為(wei)2-4米(mi)(mi),拋石(shi)厚度一(yi)(yi)(yi)般為(wei)2-3m,讓其穩定后,采用(yong)壓實(shi)(shi)機械(xie)壓實(shi)(shi),為(wei)保證基礎整體性(xing),建議還要在80厘(li)米(mi)(mi)墊層中鋪(pu)設兩(liang)道(dao)土工格(ge)柵(zha)。當淤泥(ni)大于6米(mi)(mi)深時(shi),采用(yong)CFG基樁加固,然(ran)后在其上填一(yi)(yi)(yi)層大于80cm厚的(de)優(you)質砂礫(li)墊層,并夯實(shi)(shi)緊(jin)密。
起吊作(zuo)業須(xu)有專職(zhi)安(an)全人員現場(chang)監控,操作(zuo)手必須(xu)是熟練工(gong)(gong),且(qie)經過安(an)全培(pei)訓,現場(chang)配(pei)有管理人員統一(yi)調配(pei)指(zhi)揮(hui)。波紋(wen)涵管目前(qian)工(gong)(gong)程上(shang)通常用櫻(ying)錘(chui)沖(chong)擊(ji)(ji)試(shi)驗來測量材料的(de)(de)(de)沖(chong)擊(ji)(ji)韌性,其(qi)原理,先將(jiang)被測材料制(zhi)成一(yi)定形(xing)狀(zhuang)和(he)尺寸的(de)(de)(de)試(shi)樣,安(an)放在沖(chong)擊(ji)(ji)試(shi)驗機(ji)上(shang),把(ba)具有一(yi)定重(zhong)量的(de)(de)(de)櫻(ying)錘(chui)提到高度。
當(dang)(dang)涵管處(chu)于(yu)(yu)軟(ruan)土地(di)基上時,需對軟(ruan)土路基進行(xing)處(chu)理(li),涵洞地(di)基處(chu)理(li)方法(fa)同該路段的(de)(de)路基處(chu)理(li)方法(fa),然(ran)后在其上填(tian)一層(ceng)(ceng)大于(yu)(yu)80cm厚的(de)(de)優質砂礫墊層(ceng)(ceng)。處(chu)理(li)措施,根據軟(ruan)基厚度(du)及填(tian)土高度(du),確定處(chu)理(li)措施,當(dang)(dang)淤(yu)泥(ni)小(xiao)(xiao)于(yu)(yu)4米(mi)深時,采用(yong)清(qing)(qing)淤(yu)拋(pao)石(shi)處(chu)理(li)方法(fa),一般清(qing)(qing)淤(yu)深度(du)為1.5-2.5米(mi),拋(pao)石(shi)厚度(du)一般為1.5-2.5m,讓其穩定后,采用(yong)壓實機械(xie)壓實,在其鋪(pu)設(she)不小(xiao)(xiao)于(yu)(yu)80厘米(mi)的(de)(de)碎石(shi)墊層(ceng)(ceng)。
此時擺錘(chui)(chui)位能為,然(ran)后(hou)讓(rang)其自有下落(luo),沖(chong)(chong)斷(duan)(duan)試樣,沖(chong)(chong)斷(duan)(duan)試樣后(hou)擺錘(chui)(chui)剩余的能量為gH2,擺錘(chui)(chui)沖(chong)(chong)斷(duan)(duan)試樣所消(xiao)耗(hao)的位能為沖(chong)(chong)擊吸收功(gong),用符號Akv表示(shi),單位為J,即(ji)Akv=g(H1-H2)J。波(bo)紋涵管洛氏硬(ying)度法的優點:測(ce)量簡單、迅速(su),并可(ke)測(ce)薄的試樣和硬(ying)的材(cai)料(liao),但(dan)不如(ru)用布氏硬(ying)度法準確。(hanihanbj.com)
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