01.地(di)腳螺栓(shuan)的預埋
地腳螺栓的預埋質量直接影響延邊朝鮮族鋼結構的(de)安裝質(zhi)(zhi)量,控制好地腳螺(luo)栓(shuan)(shuan)(群)的(de)位置、垂直度(du)、長度(du)和標(biao)高,對于減少擴孔及調(diao)整(zheng)工(gong)(gong)作(zuo)量(甚(shen)至(zhi)避免返工(gong)(gong)),提高結構安裝質(zhi)(zhi)量具有重要意(yi)義。地腳螺(luo)栓(shuan)(shuan)的(de)預埋方(fang)法(fa)(fa)可(ke)(ke)采用(yong)直接預埋法(fa)(fa),也可(ke)(ke)采用(yong)預留孔法(fa)(fa)。基礎(chu)砼澆筑前監理工(gong)(gong)程師必須嚴(yan)格檢查預埋螺(luo)栓(shuan)(shuan)施工(gong)(gong)方(fang)法(fa)(fa)的(de)合理性(xing)、可(ke)(ke)靠性(xing),以及各項實測指標(biao)是否在規范規定范圍內。
02.焊接工程質量(liang)控制(zhi)
焊(han)接(jie)工(gong)程(cheng)(cheng)是(shi)鋼結(jie)構制作(zuo)和(he)安裝工(gong)程(cheng)(cheng)最重(zhong)要的分項之一,監(jian)理(li)工(gong)程(cheng)(cheng)師(shi)必須從(cong)事前準(zhun)備,施焊(han)過(guo)程(cheng)(cheng)和(he)成品檢驗各個(ge)環節,切(qie)實作(zuo)好焊(han)接(jie)工(gong)程(cheng)(cheng)的質量控制工(gong)作(zuo)。焊(han)接(jie)質量問題(ti)較多存在(zai)于手(shou)工(gong)焊(han)縫,這(zhe)些問題(ti)有:焊(han)瘤、夾渣、氣孔(kong)、沒(mei)焊(han)透、咬邊、錯邊、焊(han)縫尺(chi)寸(cun)偏差大(da)、不(bu)(bu)用引弧(hu)板、焊(han)接(jie)變形(xing)不(bu)(bu)矯正、飛濺物清理(li)不(bu)(bu)凈等。鑒于這(zhe)種情況,監(jian)理(li)工(gong)程(cheng)(cheng)師(shi)必須做好以下(xia)各項工(gong)作(zuo):
(1)檢(jian)查(cha)焊(han)接原材料出(chu)廠質量證明(ming)書(shu);
(2)檢查焊工(gong)上崗證;
(3)督促進行必(bi)要的焊接工藝試驗;
(4)施焊過(guo)程(cheng)中(zhong)加強巡視檢(jian)查,監督落(luo)實各項(xiang)技術措施;
(5)嚴格(ge)進行焊縫(feng)質量外觀檢(jian)查和焊縫(feng)尺寸實測;
(6)督促進行無損檢測工(gong)作。
03.高(gao)強度螺栓連接工程
高(gao)(gao)(gao)(gao)(gao)強度螺(luo)栓(shuan)(shuan)連(lian)(lian)接(jie)工(gong)程(cheng)也是鋼(gang)結構(gou)工(gong)程(cheng)最(zui)重要的(de)分(fen)項之(zhi)一(yi),也是目前施(shi)工(gong)質(zhi)(zhi)(zhi)量(liang)的(de)薄弱(ruo)環節之(zhi)一(yi),主要表現在:(1)高(gao)(gao)(gao)(gao)(gao)強度螺(luo)栓(shuan)(shuan)有以(yi)次充好現象,(用(yong)普通精(jing)制螺(luo)栓(shuan)(shuan)代替(ti)高(gao)(gao)(gao)(gao)(gao)強度螺(luo)栓(shuan)(shuan));(2)高(gao)(gao)(gao)(gao)(gao)強度螺(luo)栓(shuan)(shuan)連(lian)(lian)接(jie)面處(chu)理(li)達不(bu)到規范規定要求,包括表面處(chu)理(li)情(qing)況,平整密貼情(qing)況,螺(luo)栓(shuan)(shuan)孔質(zhi)(zhi)(zhi)量(liang)情(qing)況等;(3)高(gao)(gao)(gao)(gao)(gao)強度螺(luo)栓(shuan)(shuan)施(shi)擰(ning)(ning)不(bu)按規范規定進行(xing),如不(bu)分(fen)初擰(ning)(ning)、終擰(ning)(ning)而一(yi)次完成(cheng),不(bu)用(yong)扭矩扳手、全憑(ping)主觀估計等。為保(bao)(bao)證高(gao)(gao)(gao)(gao)(gao)強度螺(luo)栓(shuan)(shuan)連(lian)(lian)接(jie)工(gong)程(cheng)的(de)施(shi)工(gong)質(zhi)(zhi)(zhi)量(liang),監(jian)理(li)工(gong)程(cheng)師(shi)必須以(yi)高(gao)(gao)(gao)(gao)(gao)度的(de)責任(ren)心(xin),在督促承包單位提高(gao)(gao)(gao)(gao)(gao)質(zhi)(zhi)(zhi)量(liang)意識(shi)、加強質(zhi)(zhi)(zhi)量(liang)管理(li)、落(luo)實質(zhi)(zhi)(zhi)量(liang)保(bao)(bao)證措施(shi)的(de)同時,積極采用(yong)旁(pang)站(zhan)監(jian)督、平行(xing)檢驗等工(gong)作方法,只有這樣(yang)才能(neng)使(shi)高(gao)(gao)(gao)(gao)(gao)強度螺(luo)栓(shuan)(shuan)連(lian)(lian)接(jie)工(gong)程(cheng)的(de)施(shi)工(gong)質(zhi)(zhi)(zhi)量(liang)處(chu)于嚴格的(de)控制之(zhi)下。
04.鋼結構除銹及涂(tu)裝工(gong)程(cheng)
鋼(gang)(gang)結(jie)(jie)構(gou)(gou)的(de)(de)(de)除銹和涂裝(zhuang)是目前鋼(gang)(gang)結(jie)(jie)構(gou)(gou)承包單位較易忽視的(de)(de)(de)一項工(gong)(gong)(gong)(gong)作,也是鋼(gang)(gang)結(jie)(jie)構(gou)(gou)工(gong)(gong)(gong)(gong)程施工(gong)(gong)(gong)(gong)的(de)(de)(de)薄(bo)弱環節。這(zhe)種現(xian)象不糾(jiu)正,對(dui)鋼(gang)(gang)結(jie)(jie)構(gou)(gou)的(de)(de)(de)施工(gong)(gong)(gong)(gong)質量(liang)(liang)影響甚(shen)大,因為(wei)除銹和涂裝(zhuang)質量(liang)(liang)的(de)(de)(de)合格與否直接影響鋼(gang)(gang)結(jie)(jie)構(gou)(gou)今后使用(yong)期間(jian)的(de)(de)(de)維護費用(yong),還(huan)影響鋼(gang)(gang)結(jie)(jie)構(gou)(gou)工(gong)(gong)(gong)(gong)程的(de)(de)(de)使用(yong)壽命、結(jie)(jie)構(gou)(gou)安全及(ji)發生火(huo)(huo)災時(shi)的(de)(de)(de)耐火(huo)(huo)時(shi)間(jian)(防火(huo)(huo)涂裝(zhuang))。造成(cheng)這(zhe)種現(xian)象的(de)(de)(de)思想根源在于承包單位有關人員對(dui)涂裝(zhuang)工(gong)(gong)(gong)(gong)作的(de)(de)(de)重要(yao)性認(ren)識不足(zu),再加(jia)上缺乏質量(liang)(liang)責(ze)任心,甚(shen)至惟利是圖,最終導致涂裝(zhuang)工(gong)(gong)(gong)(gong)程質量(liang)(liang)經(jing)常出現(xian)問(wen)題。故監(jian)理工(gong)(gong)(gong)(gong)程師必須對(dui)除銹和涂裝(zhuang)工(gong)(gong)(gong)(gong)作給(gei)予(yu)高度(du)重視,對(dui)各個工(gong)(gong)(gong)(gong)序(xu)進行嚴格的(de)(de)(de)檢查驗收,這(zhe)是確(que)保鋼(gang)(gang)結(jie)(jie)構(gou)(gou)涂裝(zhuang)質量(liang)(liang)的(de)(de)(de)基礎和保障。 關于鋼(gang)(gang)結(jie)(jie)構(gou)(gou)工(gong)(gong)(gong)(gong)程的(de)(de)(de)涂裝(zhuang)質量(liang)(liang),應抓好(hao)以下工(gong)(gong)(gong)(gong)作:
(1)對鋼(gang)構(gou)件的除銹質量按(an)照設計要求的等級進行嚴格的驗(yan)收;
(2)檢查涂裝原材料(liao)的(de)出廠(chang)質量證明(ming)書,防火涂料(liao)還要檢查消防部(bu)門的(de)認可證明(ming);
(3)涂(tu)裝前徹(che)底(di)清(qing)除構件表面的泥土、油污等雜物(wu);
(4)涂裝(zhuang)施工應在(zai)無塵(chen)、干(gan)燥的環(huan)境中(zhong)進行,且溫度、濕度符合(he)規范(fan)要求;
(5)涂(tu)刷遍數及(ji)涂(tu)層(ceng)厚度要(yao)符合設計要(yao)求(qiu);
(6)對涂(tu)(tu)層損壞處要做細致處理,保證(zheng)該處涂(tu)(tu)裝質量;
(7)認真檢查涂(tu)層附著力(li);
(8)嚴(yan)格進行外觀(guan)檢查驗收,保(bao)證涂裝質量符(fu)合規范及標準要求。
05.壓型金屬板工程
壓型金屬板工(gong)(gong)程主要(yao)為彩(cai)(cai)色(se)鋼(gang)板維護結(jie)構,是較新(xin)興的(de)(de)建筑維護結(jie)構形(xing)式。目(mu)前(qian),工(gong)(gong)程實際中出現的(de)(de)問題(ti)主要(yao)有:施工(gong)(gong)單位(wei)不(bu)(bu)制(zhi)定彩(cai)(cai)板(夾芯板)施工(gong)(gong)方(fang)案,彩(cai)(cai)板接縫、板檁之間的(de)(de)連接、彩(cai)(cai)板配件制(zhi)作(zuo)安裝(zhuang)等節點構造(zao)處(chu)理不(bu)(bu)細(xi)或不(bu)(bu)可靠(kao),維護結(jie)構滲漏,彩(cai)(cai)板分項工(gong)(gong)程觀感質量存在不(bu)(bu)平整(zheng)、不(bu)(bu)順直、不(bu)(bu)嚴密(mi)、變(bian)形(xing)、劃(hua)傷、污染現象等。 針對(dui)以上情況(kuang),監理工(gong)(gong)程師在工(gong)(gong)作(zuo)中要(yao)注意以下幾(ji)點:
(1)彩(cai)板(ban)(ban)(夾芯(xin)板(ban)(ban))制(zhi)作安(an)裝前一(yi)定要(yao)督促施工(gong)單位制(zhi)定周密可靠的(de)彩(cai)板(ban)(ban)工(gong)程施工(gong)方(fang)案,尤其是要(yao)制(zhi)定詳細的(de)排(pai)板(ban)(ban)方(fang)案、建筑構造作法及質量保證措施;
(2)制作、安裝過(guo)程中要加強巡視檢查(cha)、旁站監(jian)督和平行(xing)檢驗,使大部分質(zhi)量問題消滅(mie)在施工(gong)(gong)前(qian)和施工(gong)(gong)過(guo)程中;
(3)嚴格進行檢驗(yan)批及分項工(gong)程驗(yan)收,要確保節點(dian)構造(zao)合理、可靠、無滲漏,觀感平整、順(shun)直、嚴密、顏(yan)色均勻一(yi)致(zhi)、板面無劃(hua)傷(shang)、無銹斑、無污染。
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