涵洞混凝土施工技術(shù)交底(完)

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9、Ministryofe ducation onfull started implementatidZhu Guiyan, responsiblefor dista nce e ducation digitalres,hundredspusnetw orkand networka ccesstoallr ooms;-. 一.-on tea chi ng points digitale ducationresourceof megabytes of br. _ I 一 IXXeducati on metropolita一.-一 - .1.1oadbandtothe ta ble,'wire

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11、classrooms,remoteinteractivevintplatform,the CentralLibraryof audiodeotea chi ng system of moderne.IL_I _.-visualeducatiducati onance teaching poi nts digitale ducation resourcesfullducationteachingon resources,projectgroupleadercover proje ctship and新建鐵路瑞昌至九江鐵路RJZQ 2 標(biāo)廬山站DK205+036.4 1-6m 鋼筋 混凝土框架箱涵

12、混凝土施工技術(shù)交底書編號：RJZQ#1- m編 制：復(fù) 核：接 收：RJZQ 2 標(biāo)項目經(jīng)理部2014 年 10 月mprove,se curity prevention ca pacity obvi ously enhanced, security hiddefor allequi pmentin t heroom a regular dust,replace t heol d label.and Ci scoproducts.Inthe ir dailyw ork,to publicize related knowledgeand information se curity conside

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14、ecuritymonitoringi nformation a nd e qui pment. By thea ppr opr iatetechni calstaff,XX network e ngine room mainte nance staffon site manageme ntand mai ntena nceon areg ularbasis, scheduledvie wing ofnetworks,systems,data base sand associate dequipme ntoperatingconditions, assof network ahself-exam

15、i, such asequipment fail ure, should be processed in atimelymanner indi nformation security,a nd strivet o achievenetworkeveryone knonation,we arewellaware,relative lack of investment in e ducation,facil4e4d,u8c3attion resootuhrecte otal num sfbuellrcoofvtearcprhoejresc,t studconsetnrutcntuiomnbmera

16、i nsa6g5e6m9eonftthmean orderto ensuresafe and reliassecurity andvirus and equipmeble operation ofthesystem.s beforethe guar d,to improvntforfurther updates,educaitcihtry'esgtaortdaltstude ointsta1l8la.3ti1 toe netw orkand informationsen XX cityinformationand equipmetiondev elopment isstillcurit

17、y,ensure that tntwas estaheXXeducatiw education conceptblishedwit hint he Ceherentre,educati onalmetropolita narea netw orkce nter machine roomXX.Serversand datastores a nd a pplicationsto setupi nXXCitymetropolita n area netwnd make arecord.Computerla b maintena nce managers reg ularly runa variety

18、of devices inthe schoolinformationsystem parameters,nux,the operatingsystem,thedatabaserver systemsand vari ous data ba ckup, so thatthere ws Micrasa har dwarefailurein asystem cra shcan resume quicklyaputer, informationsystem securityprd outspe cialfundnd efficie ntly. Computerlab maioducts fordome

19、sticntena nce ma nagers esta blish a netw orkantivir us system,Avira Vproducts,including the use of360 aofessi onala ndte chnicalteam,school_ _ L I>Inetworkmandking soft Inter-to-face ornetw orklearni ng,doeach teaching (indiIvniXXd,ual)adwivairsdi. To enxpoefdaitceleasdsu,caatciolanssinafotromta

20、altirzaantikenagers on commonpoi nts are ha- - .netse curitysoftware.irus system ona r egularba sis,a nda nti-virussoftwaree.XXeducati on metropolitanndtrbaeinicnagpa,bOlectoofbserol1v7i,n2g013,issescuueridty issues.XXrthdeschoodl trhuenni nationalngmlineivsetleroifasluopne,rv2isioprnsecurity asse s

21、sment,time ton area net workused bythe serverforHPIssuest hatcannoton a nd e qupgra de.Comp uter lab maintenance managementnd informati onsecurity productforHuaweings,analysis,-I. .1sschoolonc,heedrusciatin ouornciityrnefaocrhmeadti1o0n0.steering,steering,sXtXeesreiries ofnefgfewcittihvteinfohremeat

22、ionnd, principal sof e ducationinformationintoperformance a ssessmenta nd school levelmonitori ngand evaluati on,to developa scientific,operational educati on information steeringa ssessment methods,tracki ng manageme nt of educati oninformation andapplicati ons.By March2016,100ofthe teachers, I par

23、ticipated i n a nati onal educationalte chnol ogytraining for primarya nd secondaryschool teachers,thetea chers have made to cut 80 primarya ndmiddle schoolteachers'e ducationaltechnologyprofici encytestcertificate.At present,all schools hav eaccessto br oadband networks.Training classification

24、traini ng ofteachers, schoolteachers, academicleang andn etworkmanageme nt personnelfromthe Countonce traini ng is compl ete.混凝土施工技術(shù)交底單位：中鐵四局瑞九鐵路RJZQ-2標(biāo)工程名稱DK205+036.4 1-6m鋼筋混凝土框架箱涵設(shè)計 圖號通橋(2014)5401-09接受單位涵洞施工班組部位卜部結(jié)構(gòu)施工里程DK205+036.4一、質(zhì)量標(biāo)準(zhǔn)混凝土涵洞允許偏差和檢驗方法序號項目允許偏差（mrm檢驗方法1邊翼墻、中墩距設(shè)計中心線位置20測量檢查/、少于5處2墻頂、拱

25、座頂血局程±153孔徑±20尺量檢查/、少于5處4涵長+100 -505厚度+ 10 -5頂板、底板、邊墻各檢查 2處6涵身接頭錯臺10尺量檢查/、少于5處二、施L匚藝及技術(shù)操作要點1、混凝土澆筑涵洞混凝土由攪拌站集中生產(chǎn)供應(yīng)，混凝土運輸車運輸，由汽車泵直接澆筑?；炷翍?yīng)分層進(jìn)行澆筑，不得隨意留置施工縫。其分層厚度不大于300mm混凝土澆 筑過程中，邊澆筑邊進(jìn)行振搗使其均勻密實，振搗采用插入式振搗器垂直點振，插 入式振搗器的移動間距不大于振搗器作用半徑的1.5倍，且插入下層混凝土內(nèi)的深度為50100mm與側(cè)模保持0100mm勺跑離。當(dāng)振搗完畢需變換振搗棒在混凝土拌和物中的水

26、平位置時，應(yīng)邊振動邊豎向緩 慢提出振動棒，不得將振搗棒放在拌和物內(nèi)平拖，不得用振搗棒驅(qū)趕混凝土。避免 碰撞模板鋼筋及其他預(yù)埋部件?；炷了涠容^小時，應(yīng)加密振點分布。每一振點的振搗延續(xù)時間宜為2030s, 以混凝土不再沉落、不出現(xiàn)氣泡、表面呈現(xiàn)浮漿為度，防止過振、漏振?；炷琳?搗完成后，及時修整，抹平混凝土裸露面，彳寺定漿后再抹第二遍并壓光。抹面時嚴(yán)禁 灑水，防止過度操作影響表層混凝土的質(zhì)量。i ltee1#斜桿S6橫梁S2結(jié)點板S14擋喳板S5結(jié)點板S16第一層澆筑示意圖（底板底至底板頂面以上30cm處）第二次澆筑前須將已澆筑完的混凝土面鑿毛（鑿至漏出粗骨料、新鮮混凝土面）， 再進(jìn)行第二次

27、側(cè)墻及頂板混凝土澆筑?；炷琳駬v過程中，避免重復(fù)振搗，防止過 振，加強檢查模板支撐的穩(wěn)定性和接縫的密合情況，防止在振搗混凝土過程中產(chǎn)生 漏漿?；炷翝仓?yīng)符合下列規(guī)定：混凝土拌制前，應(yīng)測定砂、石含水率，并根據(jù)測試結(jié)果及時調(diào)整施工配合比。 當(dāng)遇雨天時，應(yīng)增加含水率檢測次數(shù)。每工作班檢查不少于一次?；炷涟柚七^程中，應(yīng)對混凝土拌和物的坍落度進(jìn)行測定，測定值應(yīng)不超過 理論配合比坍落度的控制范圍。每拌制 50n3或每工作班測試不應(yīng)少于一次。 混凝土的入模溫度不大于 30Co冬期施工時，混凝土的出機溫度不宜低于 10 C,混凝土的入模溫度不應(yīng)低于 5C。每工作班至少測溫3次并填寫測溫記錄。新澆筑混凝土入

28、模溫度與鄰接的己硬化混凝土表面溫度的溫差不得大于15Co與新澆筑混凝土接觸的已硬化混凝土、 鋼筋和模板的溫度不得低于2C。每部 位測溫一次并填寫測溫記錄?；炷恋臐仓樞驗橄葷仓吹装宕_(dá)到設(shè)計強度后進(jìn)行底板和墻身施 m o2、試塊制作混凝土的強度等級必須符合設(shè)計要求，混凝土力學(xué)性能標(biāo)準(zhǔn)條件養(yǎng)護(hù)試件的試 驗齡期為56d。力學(xué)性能標(biāo)準(zhǔn)條件養(yǎng)護(hù)試件應(yīng)在混凝土的澆筑地點隨機抽樣制作，具Th tai-in .- pabily taich- r- h.d 100.2試件的取樣與留置頻率應(yīng)符合下列規(guī)定： 每拌制100盤且不超過100m3的同配合比的混凝土，取樣不得少于一次。 每工作班拌制的同一配合比的混

29、凝土不足 100盤時，取樣不得少于一次。現(xiàn)澆混凝土的每一結(jié)構(gòu)部位，取樣不得少于一次。 每次取樣應(yīng)至少留置一組試件。混凝土同條件養(yǎng)護(hù)法試件的抗壓強度必須符合設(shè)計要求?；炷量箟簭姸韧瑮l 件養(yǎng)護(hù)法試件的留置組數(shù)應(yīng)按設(shè)計要求、相關(guān)標(biāo)準(zhǔn)規(guī)定和實際需要確定。3、混凝土養(yǎng)護(hù)混凝土澆筑完畢后，常溫下應(yīng)按時進(jìn)行灑水保濕養(yǎng)護(hù)，自然養(yǎng)護(hù)期間，應(yīng)在混 凝土澆筑完畢后1h內(nèi)對混凝土進(jìn)行保溫保濕養(yǎng)護(hù)；混凝土內(nèi)部溫度不宜超過60C,最高不得大于65 C；混凝土內(nèi)部溫度與表面溫度之差、表面溫度與環(huán)境溫度之差不 宜大于20C；養(yǎng)護(hù)用水溫度與混凝土表面溫度之差不得大于 15C；養(yǎng)護(hù)時間不小于 14d。當(dāng)環(huán)境溫度低于5c時禁止灑

30、水，采取薄膜包裹或覆蓋草席、毛氈等進(jìn)行保溫 保濕養(yǎng)護(hù)。4、混凝土拆模拆模時混凝土內(nèi)部與表面、表面與環(huán)境之間的溫差不得大于20Co混凝土內(nèi)部開始降溫前不得拆模，大風(fēng)及氣溫急驟變化時不應(yīng)拆模。涵洞沉降縫采用聚乙烯泡沫板，沉降縫要求豎直，且涵身基礎(chǔ)沉降縫必須在同 一截面。本段涵洞板厚均小于30cm,止水帶采用背貼式止水帶，其中底板下的止水帶可 在澆筑涵身混凝土之前將止水帶鋪設(shè)固定于涵身沉降縫處的墊層（或出入口涵節(jié)的 基礎(chǔ)）上，然后澆筑混凝土即可。邊墻和頂板止水帶在涵身混凝土達(dá)到設(shè)計強度后， 用膨脹螺栓、鋼板條固定于涵節(jié)端部框架外緣呈環(huán)形布置。止水帶中間圓環(huán)部分應(yīng) 位于沉降縫中心線上，施工時注意準(zhǔn)確定

31、位。止水帶宜用整根盡量減少接頭，接頭 應(yīng)粘接牢固密不透水，接頭宜設(shè)在沉降縫的平直部位，不得設(shè)在涵身邊墻與頂?shù)装?轉(zhuǎn)角處。背貼式止水帶頂板和邊墻安裝材料用量（每米止水帶）M10膨脹螺栓5套（含墊 圈）；50*3mni岡板壓條2根，重2.34kg,鋼板壓條上的螺栓孔 11mmi岡板壓條采用 Q235鋼板。 cuiy . hdde a nd -u. a -Xet ob.usy re d fecve guaa-s infmain >-d-.pmet XX E-On,efr. carry oU to dy new or a pmet. ecni . eng ncesafn s. managment

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40、-e pi.e It止水市施工注息事項：(1)止水帶接頭應(yīng)連接牢固，密不透水。(2)止水帶接頭應(yīng)設(shè)在沉降縫的平直部位，不得設(shè)在沉降縫的轉(zhuǎn)角處。(3)水帶不得長時間露天曝曬，防止雨淋，勿與污染性強的化學(xué)物質(zhì)接觸。(4)在運輸和施工中，防止機械，鋼筋損傷止水帶。(5)施工過程中，止水帶必須可靠固定，避免在澆注混凝土?xí)r發(fā)生位移，保證 止水帶在混凝土中的正確位置。(6)對于有錯臺的框架涵沉降縫，止水帶安裝可采用加臺的方法處理，錯臺寬 度為4050cmi高度與錯臺高度相等。涵洞兩側(cè)側(cè)墻部分直接采用聚氨酯防水涂料做防水層施工，其涵洞頂防水層做 法：抹一層M10水泥砂漿墊層一粘貼聚氨酯防水涂料一聚氨酯防水卷

41、材一4cm厚C40纖維碎且成2公子坡。兩側(cè)側(cè)墻部分直接采用聚氨酯防水涂料防水層施工，具涵洞 頂防水層做法：直接填筑不透水土保護(hù)層20cmi防水涂料按甲、乙兩組份配比準(zhǔn)確、 攪拌均勻、涂刷均勻、無漏刷現(xiàn)象。防水層施工前將涵身上的尖凸處打磨平整，將泥土、雜物等清除干凈，保持涵 身表面干燥，以保證防水材料與涵身的粘結(jié)，保護(hù)層為4cm厚C40細(xì)石混凝土。涵洞過渡段填筑應(yīng)在涵身結(jié)構(gòu)達(dá)到設(shè)計強度后進(jìn)行，過渡段施工的要求，涵身兩側(cè)1m范圍內(nèi)的填土不得用大型機械施工， 宜采用人工配合小型機械的方法夯填密實，涵身兩側(cè)分層對稱回填壓實。-涵洞出入口邊坡、錐坡、溝床底部填鋪碎石墊氤、錐坡、溝床、 垂裙采用C30混凝

42、土澆筑注意控的整向 涵洞國"口檢查臺階采用M10漿砌片據(jù)柒通肺層杓幽 t- e -p n- p-il. Ct.iecled 三、安全及文明施工注意事項安全措施：1、加強對施工人員的安全教育。2、所有施工人員必須戴安全帽，作業(yè)時禁止穿拖鞋。3、用電設(shè)備應(yīng)實一機一閘一漏一箱。漏電保護(hù)裝置應(yīng)與設(shè)備相配套，不得用 一個開關(guān)直。夜間施工配足夠的照明燈，電力線必須由電工人員架設(shè)及管理，開關(guān) 須肩防雨保護(hù)且安設(shè)牢固，并設(shè)有漏電保護(hù)器。4、應(yīng)對施工現(xiàn)場、機具設(shè)備及安全防護(hù)設(shè)施等，進(jìn)行全面檢查，由安質(zhì)部確認(rèn) 符合安全要求后方可施工。施工所用的各種機具設(shè)備和勞動保護(hù)用品，應(yīng)定期進(jìn)行 檢查和必要的檢驗，保證具經(jīng)常處于完好狀態(tài)；不合格的機具設(shè)備和勞動保護(hù)用品 嚴(yán)禁使用。文明施工及環(huán)境保護(hù)措施：1、現(xiàn)場施工時不得破壞附近的植被等；2、施工過程中不得污染水土資源；3、不得隨意堆放，及時回收現(xiàn)場