您好,歡迎來到福建佳旺工程機械有限公司網站!

    橋梁模板資訊

    大塊橋梁模板施工存在的不足

    信息來源:sxylgc.cn | 發布時間:2021年05月07日

      為保障混凝土大塊鋼福州橋梁模板光guang麵mian效xiao果guo,工gong作zuo人ren員yuan需xu要yao控kong製zhi原yuan材cai料liao質zhi量liang,根gen據ju規gui範fan拌ban和he原yuan材cai料liao。本ben又you結jie合he恰qia木mu薩sa水shui電dian站zhan攔lan河he引yin水shui閘zha壩ba排pai架jia柱zhu混hun凝ning土tu光guang麵mian施shi工gong的de實shi際ji情qing況kuang,分fen析xi了le在zai水shui利li建jian設she過guo程cheng中zhong,大da塊kuai橋qiao梁liang模mo板ban施shi工gong存cun在zai的de不bu足zu,提ti出chu確que保bao混hun凝ning土tu大da塊kuai鋼gang橋qiao梁liang模mo板ban光guang麵mian效xiao果guo的de新xin工gong藝yi和he新xin方fang法fa。工gong程cheng實shi踐jian表biao明ming,該gai工gong藝yi可ke有you效xiao解jie決jue混hun凝ning土tu大da塊kuai鋼gang橋qiao梁liang模mo板ban存cun在zai的de病bing害hai,同tong時shi提ti高gao表biao麵mian亮liang度du。
      

    福州橋梁模板


      在(zai)恰(qia)木(mu)薩(sa)水(shui)電(dian)站(zhan)攔(lan)河(he)引(yin)水(shui)閘(zha)壩(ba)排(pai)架(jia)柱(zhu)混(hun)凝(ning)土(tu)建(jian)設(she)過(guo)程(cheng)中(zhong),根(gen)據(ju)合(he)同(tong)規(gui)定(ding)的(de)內(nei)容(rong),在(zai)結(jie)構(gou)混(hun)凝(ning)土(tu)利(li)用(yong)大(da)塊(kuai)鋼(gang)橋(qiao)梁(liang)模(mo)板(ban)施(shi)工(gong)工(gong)藝(yi),但(dan)是(shi)整(zheng)體(ti)施(shi)工(gong)效(xiao)果(guo)比(bi)較(jiao)差(cha),施(shi)工(gong)單(dan)位(wei)需(xu)要(yao)找(zhao)出(chu)施(shi)工(gong)問(wen)題(ti)出(chu)現(xian)的(de)原(yuan)因(yin),提(ti)出(chu)針(zhen)對(dui)性(xing)的(de)整(zheng)改(gai)措(cuo)施(shi),保(bao)障(zhang)混(hun)凝(ning)土(tu)大(da)塊(kuai)鋼(gang)橋(qiao)梁(liang)模(mo)板(ban)光(guang)麵(mian)效(xiao)果(guo)。本(ben)文(wen)結(jie)合(he)該(gai)工(gong)程(cheng)混(hun)凝(ning)土(tu)光(guang)麵(mian)施(shi)工(gong)的(de)實(shi)際(ji)情(qing)況(kuang),淺(qian)述(shu)光(guang)麵(mian)混(hun)凝(ning)土(tu)的(de)施(shi)工(gong)工(gong)藝(yi)。洽(qia)木(mu)薩(sa)水(shui)電(dian)站(zhan)是(shi)葉(ye)爾(er)羌(qiang)河(he)下(xia)遊(you)河(he)道(dao)規(gui)劃(hua)梯(ti)級(ji)開(kai)發(fa)中(zhong)的(de)第(di)2級電站,其上遊為塹高水電站,下遊為亞貝西水電站,恰木薩水電站攔河引水樞紐采用閘壩布置型式。
      
      自左至右岸依次布置發電引水閘、單孔泄洪衝沙閘、單孔排漂排冰閘、18孔泄洪衝沙閘、生態電站、單(dan)孔(kong)灌(guan)溉(gai)引(yin)水(shui)閘(zha)和(he)土(tu)工(gong)膜(mo)斜(xie)牆(qiang)砂(sha)礫(li)石(shi)壩(ba),並(bing)在(zai)土(tu)石(shi)壩(ba)段(duan)布(bu)置(zhi)過(guo)魚(yu)設(she)施(shi),壩(ba)前(qian)鋪(pu)設(she)水(shui)平(ping)鋪(pu)蓋(gai),壩(ba)後(hou)布(bu)設(she)回(hui)填(tian)平(ping)台(tai)及(ji)排(pai)水(shui)溝(gou)。樞(shu)紐(niu)右(you)岸(an)末(mo)端(duan)與(yu)塹(qian)高(gao)水(shui)電(dian)站(zhan)廠(chang)房(fang)尾(wei)水(shui)渠(qu)右(you)側(ce)渠(qu)堤(di)銜(xian)接(jie)。引(yin)水(shui)樞(shu)紐(niu)主(zhu)要(yao)建(jian)築(zhu)物(wu)均(jun)為(wei)3級建築物,樞紐總長2450m,其中引、泄水建築物壩段長287. 97m。
      
      檢(jian)查(zha)發(fa)現(xian)工(gong)程(cheng)混(hun)凝(ning)土(tu)出(chu)現(xian)了(le)石(shi)子(zi)外(wai)露(lu)和(he)小(xiao)氣(qi)泡(pao)等(deng)問(wen)題(ti),主(zhu)要(yao)是(shi)因(yin)為(wei)粗(cu)集(ji)料(liao)級(ji)配(pei)偏(pian)粗(cu),在(zai)調(tiao)整(zheng)施(shi)工(gong)配(pei)合(he)比(bi)的(de)過(guo)程(cheng)中(zhong),沒(mei)有(you)考(kao)慮(lv)上(shang)述(shu)因(yin)素(su),在(zai)施(shi)工(gong)過(guo)程(cheng)中(zhong)也(ye)沒(mei)有(you)提(ti)出(chu)控(kong)製(zhi)措(cuo)施(shi)。此(ci)外(wai),細(xi)集(ji)料(liao)的(de)級(ji)配(pei)偏(pian)粗(cu),具(ju)有(you)較(jiao)大(da)的(de)細(xi)度(du)模(mo)數(shu),減(jian)低(di)了(le)整(zheng)體(ti)砂(sha)率(lv)。主(zhu)要(yao)問(wen)題(ti)是(shi)施(shi)工(gong)單(dan)位(wei)沒(mei)有(you)準(zhun)確(que)掌(zhang)握(wo)水(shui)灰(hui)比(bi),整(zheng)體(ti)拌(ban)和(he)時(shi)間(jian)比(bi)較(jiao)短(duan),橋(qiao)梁(liang)模(mo)板(ban)除(chu)鏽(xiu)工(gong)作(zuo)不(bu)夠(gou)徹(che)底(di),沒(mei)有(you)嚴(yan)格(ge)密(mi)封(feng)接(jie)縫(feng),使(shi)用(yong)過(guo)多(duo)的(de)脫(tuo)模(mo)機(ji)油(you);施工單位沒有嚴格控製施工振動的時間,導致振動不足,或出現過振問題;在人倉平鋪混凝土的過程中不夠規範;過旱地拆模,同時沒有及時落實養護工作。總之,施工單位需要重視以上問題,嚴格落實混凝土大塊鋼橋梁模板光麵效果的措施。