施工(gong)過程中,嚴(yan)(yan)格遵(zun)守操作規則,嚴(yan)(yan)防落(luo)物傷人及墜落(luo)事(shi)故。各種(zhong)電(dian)(dian)(dian)氣(qi)設備(bei)運轉(zhuan)和漏電(dian)(dian)(dian)保(bao)護裝(zhuang)置,不準隨意改(gai)換安裝(zhuang)方式,尤其對于施工(gong)作業的(de)投光燈,裝(zhuang)接工(gong)作,一點不準馬虎、絲毫不能漏電(dian)(dian)(dian),確(que)保(bao)安全。所有容(rong)易碰砸的(de)電(dian)(dian)(dian)氣(qi)設備(bei)加裝(zhuang)防護罩或遮欄,防止碰傷危(wei)險。
鋼波紋(wen)涵(han)管(guan)施工現場的安全要(yao)求有哪些(xie)?
波(bo)(bo)紋涵管管底(di)兩側模形部位的密實(shi)度(du)很重要,一般設計采用現澆(jiao)C20細石混(hun)凝土護壁全(quan)斷面填筑,以保證模形區域(yu)的密實(shi),利于(yu)波(bo)(bo)紋涵管的穩定性。波(bo)(bo)紋涵管頂部填土每層厚15cm,壓實(shi)度(du)應滿足規范要求。涵管沒(mei)有(you)達到小(xiao)填土高度(du)時(shi),不(bu)得(de)使用大于(yu)6T的壓路機械(xie)碾壓,也不(bu)允許任何重型車輛通行。
鐵路鋼(gang)波紋管
參加(jia)金(jin)屬(shu)波紋涵(han)管施(shi)(shi)(shi)工(gong)(gong)(gong)人員(yuan)(yuan)要(yao)熟知本(ben)工(gong)(gong)(gong)種的(de)(de)安(an)全操(cao)(cao)作規程(cheng),堅(jian)守(shou)崗位。特殊(shu)工(gong)(gong)(gong)種人員(yuan)(yuan)如電(dian)工(gong)(gong)(gong)、電(dian)焊工(gong)(gong)(gong)、混凝土(tu)工(gong)(gong)(gong)、起(qi)重(zhong)工(gong)(gong)(gong)等施(shi)(shi)(shi)工(gong)(gong)(gong)人員(yuan)(yuan),必須經過專門培(pei)訓,熟練(lian)掌握操(cao)(cao)作要(yao)求,嚴格執(zhi)行本(ben)工(gong)(gong)(gong)種的(de)(de)安(an)全操(cao)(cao)作規程(cheng),必須隨(sui)身攜帶(dai)有關(guan)證件(或(huo)復印(yin)件)上崗備查(cha)。搭設(she)金(jin)屬(shu)波紋涵(han)管施(shi)(shi)(shi)工(gong)(gong)(gong)支架(jia)要(yao)隨(sui)時(shi)檢查(cha)支架(jia)的(de)(de)穩定(ding)性,并且加(jia)固(gu)。支架(jia)完成后,要(yao)檢查(cha)、驗算(suan)支架(jia)的(de)(de)承力,滿足承載要(yao)求后再進行上部施(shi)(shi)(shi)工(gong)(gong)(gong)。
波紋涵(han)管(guan)頂部及兩(liang)側(ce)20m范圍(wei)內不允許使用(yong)(yong)機械進行強夯,洞身兩(liang)側(ce)應(ying)用(yong)(yong)人工或小(xiao)型(xing)機具對稱夯填(tian)(tian),待填(tian)(tian)方高出涵(han)頂1米(mi)時,可采用(yong)(yong)機械填(tian)(tian)筑。在完成回填(tian)(tian)之(zhi)后,終截(jie)面尺(chi)寸與組裝時的(de)尺(chi)寸差異更(geng)大不得超過2%。如(ru)截(jie)面變(bian)形(xing)量(liang)超過變(bian)形(xing)范圍(wei),應(ying)立即終止施工,查明原因(yin),采取相應(ying)措施將變(bian)形(xing)量(liang)控制(zhi)在標準要求范圍(wei)內。
填筑時應分層(ceng)填筑、分層(ceng)壓實,每層(ceng)壓實厚(hou)度為15cm,壓實度要求達到設計要求后方可進行下一層(ceng)填筑。填筑必須在波(bo)紋(wen)涵(han)(han)管(guan)兩(liang)側對(dui)稱(cheng)同步進行,兩(liang)側的回填土(tu)高差不(bu)得大于15cm。對(dui)于有兩(liang)端擋墻(qiang)的涵(han)(han)洞,回填應從(cong)兩(liang)端向結(jie)構中心進行。如(ru)果因偏土(tu)壓造成鋼波(bo)紋(wen)涵(han)(han)管(guan)變形的,應修(xiu)正(zheng)截面(mian)尺寸后重新壓實。
波紋涵管兩側(ce)部位回(hui)填(tian):填(tian)土之前,可在波紋涵管兩側(ce)面用紅油漆(qi)按(an)每15cm高(gao)度作出填(tian)高(gao)標示(shi),填(tian)筑時按(an)標注線控制(zhi)。在管身更大直徑兩側(ce)50cm外可采(cai)用12~18T的(de)壓路機應實(shi)(shi),50cm范圍(wei)內采(cai)用小(xiao)型夯(hang)實(shi)(shi)機械(xie)(xie)夯(hang)實(shi)(shi),以避免大型機械(xie)(xie)設備對涵管的(de)撞擊。靠近管體周圍(wei)50cm范圍(wei)內,不(bu)允許有大于50mm的(de)石塊、混凝土塊或其他有害腐蝕材料。
壓(ya)(ya)實(shi)度(du)(du)要(yao)(yao)求:基(ji)(ji)礎(chu)應采用振動壓(ya)(ya)實(shi)機(ji)進行分層碾(nian)壓(ya)(ya),碾(nian)壓(ya)(ya)時應根(gen)據回(hui)填材料的含水量及擊實(shi)曲線灑(sa)水碾(nian)壓(ya)(ya),壓(ya)(ya)實(shi)度(du)(du)不小于規(gui)范(fan)要(yao)(yao)求。具體(ti)施(shi)工技術(shu)要(yao)(yao)求可參閱《公路(lu)(lu)路(lu)(lu)基(ji)(ji)設計規(gui)范(fan)》和《公路(lu)(lu)路(lu)(lu)基(ji)(ji)施(shi)工技術(shu)規(gui)范(fan)》。波紋涵管兩(liang)側及頂(ding)(ding)部100cm范(fan)圍內的回(hui)填及壓(ya)(ya)實(shi)度(du)(du)要(yao)(yao)求,圖(tu)中涵洞兩(liang)側回(hui)填土壓(ya)(ya)實(shi)度(du)(du)要(yao)(yao)求執(zhi)行,當涵頂(ding)(ding)填土厚度(du)(du)超過100cm時,填土壓(ya)(ya)實(shi)度(du)(du)與同一(yi)標高(gao)路(lu)(lu)基(ji)(ji)壓(ya)(ya)實(shi)度(du)(du)要(yao)(yao)求相同。(hanihanbj.com)
分享此文章: |
版權所有(you):衡水浩威新材料有(you)限公司(si) ICP備案(an)/許(xu)可證號: 技術支持: