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1、管架柱基礎(chǔ)、設(shè)備基礎(chǔ)施工方案construction plan of foundation for pipe rack stand and equipment一、工程概況Engineering summary冷凍站有獨(dú)立階形柱基礎(chǔ)8個(gè)、冷凍機(jī)組基礎(chǔ)2個(gè)、冷凍水泵基礎(chǔ)2個(gè)、冷凍水箱基礎(chǔ)1個(gè)、分氣缸基礎(chǔ)2個(gè)、凝水回收器基礎(chǔ)1個(gè)。The cooling station has 8 absolute stairs-shape stand foundations, 2 freezer set foundations, 2 freezing pump foundations, 1 cooling wate

2、r box foundation, 2 atmolysis vat foundations, and 1 condensation water withdrawer foundation.7030/7031管架階形柱基礎(chǔ)2個(gè)、7032管架階形柱基礎(chǔ)4個(gè)、7310/7311管架階形柱基礎(chǔ)6個(gè)、7313/7314管架階形柱基礎(chǔ)10個(gè)、7312管架階形柱基礎(chǔ)4個(gè)、7315管架階形柱基礎(chǔ)4個(gè)、7316管架階形柱基礎(chǔ)6個(gè)、7317管架階形柱基礎(chǔ)2個(gè)、7318管架階形柱基礎(chǔ)2個(gè)。2 stairs-shape stand foundations for 7030/7031 pipe rack, 4 stai

3、rs-shape stand foundations for 7312 pipe rack, 6 stairs-shape stand foundations for 7310/7311 pipe rack, 10 stairs-shape stand foundations for 7313/7314 pipe rack, 4 stairs-shape stand foundations for 7312 pipe rack, 4 stairs-shape stand foundations for 7315 pipe rack, 6 stairs-shape stand foundatio

4、ns for 7316 pipe rack, 2 stairs-shape stand foundations for 7317 pipe rack, 2 stairs-shape stand foundations for 7318 pipe rack.砼強(qiáng)度等級(jí)為C25,基礎(chǔ)鋼筋保護(hù)層不小于40, 底板鋼筋為14150雙層雙向,框架柱基礎(chǔ)內(nèi)預(yù)埋4M30螺栓,絲扣長(zhǎng)100。階形柱基礎(chǔ)頂,待柱安裝后用30厚1:2水泥砂漿找平層填實(shí)。The concrete strength grade is C25, the thickness of the reinforcing steel bar pro

5、tection layer for foundation shall be not less than 40, the reinforcing steel bar for motherboard is14150 double layer and bidirection. There are 4M30 bolts being pre-buried in the frame stand foundation and the screw thread is 100mm long. The top of the stairs-shape stand foundations will be smooth

6、ed and filled with 30mm thick 1:2 concrete sand slurry.基礎(chǔ)地基承載力特征值:土質(zhì)地基0.18MPa,巖石地基0.4 MPa。對(duì)基礎(chǔ)超深部分采用:巖石地基C15毛石混凝土換填,土質(zhì)地基用砂夾石分層夯實(shí)后的地基承載力f180KPa。地質(zhì)較好的基礎(chǔ)不換填,采用100厚的C10素混凝土墊層。The eigenvalue of the foundations bearing capacity is: terrene foundation is 0.18MPa,rock foundation is 0.4 MPa. For deeper part o

7、f the foundation, adopt: rock foundation will be filled with C15 rubble concrete instead, the bearing capacity of terrene foundation will be more than 180KPa (f180KPa) after being tamped with sand and rubble by layers. The foundation with good terrene will not be filled with other materials but adop

8、t 100 thick C10 plain concrete for cushion.二、作業(yè)程序work procedure定位放線(xiàn) 搭設(shè)防護(hù)欄 土方開(kāi)挖 堅(jiān)石切割或風(fēng)鎬開(kāi)鑿 探座基坑槽檢驗(yàn)C15毛石混凝土換填或砂夾石換填澆C10混凝土墊層鋼筋綁扎模板安裝預(yù)埋鐵件安裝混凝土澆筑拆?;炷琉B(yǎng)護(hù)回填夯實(shí)環(huán)境恢復(fù)。Orientation and setting linesetting safety railearthwork excavationfirm rock cutting or air pick cuttingtest basistest foundation groove fill wi

9、th C15 rubble concrete instead or with sand rubble instead irrigate C10 concrete cushionbanding the reinforcing steel bartemplate installationpre-buried iron parts installationconcrete irrigationremove templateconcrete maintancebackfilling and tamping the earthworkenvironment recovering三、基礎(chǔ)定位放線(xiàn)及標(biāo)高測(cè)設(shè)

10、Pipe orientation and setting line and elevation measurement1、根據(jù)基礎(chǔ)布景情況,本工程定位座標(biāo)點(diǎn)采用全站儀進(jìn)行測(cè)量,依據(jù)場(chǎng)內(nèi)導(dǎo)線(xiàn)控制點(diǎn),測(cè)定基礎(chǔ)中心的坐標(biāo)和標(biāo)高,并在坑槽1米以外做標(biāo)志。如果是土打入鋼筋或木樁釘上小釘后用水泥砂漿保護(hù),如果是混凝土路面打上油漆,保證軸線(xiàn)位置的準(zhǔn)確性。One range finder will be used to measure the orientation coordinate points of the project according to the pipe arrangement. Meas

11、ure the coordinate and elevation of the pipe centre lines according to the lead line control point in the site. And make marks along the axial line beyond 1m from the excavate line. Insert reinforcing steel bar or wood pile with nails and reinforce it with concrete sand slurry if the foundation is e

12、arthwork, or paint if the foundation is concrete, and ensure the correction of the axial.2、施工測(cè)量中,所測(cè)量結(jié)果應(yīng)根據(jù)工程測(cè)量規(guī)范GB50026-93的要求進(jìn)行校核. 其誤差:中心線(xiàn)端點(diǎn)測(cè)設(shè)在5內(nèi),中心線(xiàn)投點(diǎn)10內(nèi)。During the construction measurement. The measurement results should be reviewed according to GB50026-93. the error is in the allowed scale. The er

13、ror that measured at the ends of the center line is within 5, the error of the center line shaft plumbing is within 10.3、標(biāo)高測(cè)設(shè)以現(xiàn)場(chǎng)布置的測(cè)量控制網(wǎng)水準(zhǔn)點(diǎn)為依據(jù)。The measurement and setting of elevation base on the bench mark of the site management measurement control net.4、放線(xiàn)后將測(cè)量結(jié)果報(bào)驗(yàn),經(jīng)CWEC專(zhuān)業(yè)工程師現(xiàn)場(chǎng)復(fù)核,確認(rèn)無(wú)誤并簽字后才可進(jìn)行開(kāi)挖作業(yè)。R

14、eport the measuring result for check after paying off. Carry out excavation work after reviewed by the CWEC professional engineer on site, and confirmed and signed.四、基礎(chǔ)開(kāi)挖施工方法 Construction plan for foundation excavation1、開(kāi)工前辦理動(dòng)火作業(yè)票和開(kāi)工作業(yè)票。根據(jù)基礎(chǔ)大小、埋設(shè)深度和邊坡系數(shù)放出開(kāi)挖線(xiàn)。Transact the fire work permit and kick-of

15、f permit before starting work. Set the excavation line according to the size of the foundation, burying depth and the gradient of the pipe groove slope.2、基礎(chǔ)開(kāi)挖前在生產(chǎn)裝置內(nèi)兩邊應(yīng)搭設(shè)2米高防護(hù)鋼管欄桿和隔板,生產(chǎn)裝置外兩邊搭設(shè)1米高防護(hù)鋼管欄桿隔板。鋼管立柱離邊口的距離不小于500,欄桿刷紅白相間油漆二遍,欄桿上綁扎預(yù)制隔板。隔板用303做成20001000方框,拉鉚1厚鐵皮,鐵皮兩面刷鐵紅醇酸底漆一遍,刷綠色醇酸磁漆二遍。Protect

16、ive steel rail and separating board which is 2.0m high should be set around both sides of the groove before excavating in the plant, and which is 1.0m high should be set out of the plant before excavating. The distance between the steel stand column and the groove edge should not be less than 500. T

17、he rail should be painted two twice with yellow and black paint and bound with pre-fabricate separating board. The frames are made of 303 which size is 20001000 and separating boards are made of thick iron sheet which thickness is 1mm. Both sides of the iron sheet are painted with iron oxide red alc

18、oholic acid paint for one time and green alcoholic acid enamel paint for two times.4、生產(chǎn)裝置外基礎(chǔ)開(kāi)挖,堅(jiān)石采用巖石開(kāi)采切割機(jī)(KJ560-10型)加人工開(kāi)鑿的方法;土方開(kāi)挖采用人工;頁(yè)巖采用風(fēng)鎬鑿打。所有開(kāi)挖的石方應(yīng)及時(shí)外運(yùn)至楊柳沖,土方運(yùn)到原醋酸項(xiàng)目辦公樓外西南角處堆放。The excavation of the foundation out of the producing plant will adopt: firm stone will mainly adopt rock extraction cu

19、tting machine (KJ560-10 type) and supplementarily manpower. Earthwork will adopt by manpower. Shale will adopt air pick. All the stonework will be transported to YangLiuChong in time, the earthwork will be transported to the southwest corner beside the original acetic acid item office building.5、裝置內(nèi)

20、基礎(chǔ)開(kāi)挖,基礎(chǔ)堅(jiān)石采用切割機(jī)加人工開(kāi)鑿的方法,松石采用風(fēng)鎬開(kāi)鑿,土方用人工開(kāi)挖。開(kāi)挖時(shí)若遇到地下有磚或砂保護(hù)的地方,應(yīng)立即停工,并匯報(bào)CWEC、PMT確認(rèn)是否有管道或電纜線(xiàn),若有應(yīng)待CWEC和YARACO提出處理方案或采取措施后才能進(jìn)行開(kāi)挖。The excavation of the foundation inside the producing plant will adopt: foundation stone will adopt rock extraction cutting machine and manpower, and slack rock will adopt air pic

21、k. Stop working and report CWEC or PMT if there is some places that protected by brick or grit when excavating. CWEC or PMT will check whether there is pipe or cable. Excavation may begin after processing scheme or measures have been taken by CWEC or PMT.6、當(dāng)?shù)叵滤^小時(shí)采用人工排除,地下水較大時(shí)采用50潛水泵及時(shí)抽排。管溝邊坡的坡度根據(jù)土質(zhì)

22、實(shí)際情況按規(guī)范確定,但不小于1:0.3。開(kāi)挖斷面圖如下:Dig a catchment pool (500500500) in the groove before excavating. The pool should be deepened along with the digging of the groove. The water should be removed artifical if it is less and removed by50submersible pump if it is more. The gradient of the slope of the foundat

23、ion is 1:0.3. The sectional drawing of pipe excavation as follows:7、當(dāng)開(kāi)挖至設(shè)計(jì)基底標(biāo)高后,應(yīng)對(duì)坑底進(jìn)行保護(hù),組織CWEC和PMT共同進(jìn)行驗(yàn)槽,以便確保地基持力層的強(qiáng)度與設(shè)計(jì)圖紙要求是否相符,經(jīng)驗(yàn)槽合格并填寫(xiě)基坑槽隱蔽驗(yàn)收記錄簽字確認(rèn)后,才能進(jìn)行墊層施工。對(duì)基礎(chǔ)超深部分采用C15毛石混凝土換填。Protect the foundation of the groove and organize CWEC and PMT to check the groove together when the elevation of base

24、 meet the design requirement so as to ensure that the ground force-supporting layer intensity accord with the design drawing. Covering will be carried out after recording the foundation groove secret test and signing to confirm. For deeper part of the foundation, adopt C15 rubble concrete to fill in

25、stead.五、土方回填Earthwork backfilling1、填方土料應(yīng)符合設(shè)計(jì)要求,保證填方的強(qiáng)度和穩(wěn)定性,粘性土、碎石類(lèi)土、砂土和石渣(粒徑不大于每層鋪厚的23)均可用于基礎(chǔ)周?chē)练交靥?。該工程基礎(chǔ)周?chē)靥钔练讲畹牟糠植捎媒柰粱靥?。The filling earthwork should accord with the design requirement. Ensure the intensity and stability of the earthwork. Viscosity earthwork, breakstone sand and stone ballast (grai

26、n size not more than 2/3 thickness of every layer) can be used as filling around the foundation; The lacking backfilling earthwork will adopt borrowing earthwork for the engineering foundation.15、基坑(槽)回填在拆模后立即進(jìn)行,采用手推車(chē)送土,以人工用鐵鍬、鋤等工具進(jìn)行回填,用人工石夯或蛙式打夯機(jī)夯實(shí)。The foundation groove backfilling should be carrie

27、d out immediately after removing the template. Transport earthwork with handcart and backfill with spades or hoes and then tamp with frog tamper or manpower stone tamper.16、填土應(yīng)從最低處開(kāi)始,由下向上整個(gè)寬度分層鋪填夯實(shí)?;樱ú郏┗靥顟?yīng)在相對(duì)兩側(cè)或四周同時(shí)進(jìn)行回填與夯實(shí)。Backfilling start from the lowest place. Backfill and tamp and roll the whol

28、e scale by layer from the bottom up. Backfill and tamp the two sides of or around of the foundation groove at the same time. 17、人力打夯前應(yīng)將填土初步整平,打夯要按一定方向進(jìn)行,一夯壓半夯,夯夯相接,行行相連,兩遍縱橫交叉,分層夯打。Level and smooth the fill before manpower tamping. Tamp the fill in orientation and one by one tamper. Each layer shoul

29、d be tamped two twice crisscross. 18、用蛙式打夯機(jī)夯實(shí)時(shí),填土厚度不宜大于250,打夯之前對(duì)填土應(yīng)初步平整,打夯機(jī)依次夯打,均勻分布,不留間隙。The thickness of the fill should not be more than 250mm when using flog tamper. Level and smooth the fill before tamping. Tamp one by one time , Uniform distribution, and leave no gap.六、模板安裝installation of temp

30、late 1、管架基礎(chǔ)和設(shè)備基礎(chǔ)模板采用木肋板或組合鋼模板,木肋板采用上鋪貼層板的方式。Pipe rack foundation and equipment foundation template use wood slab or steel template. 2、階形基礎(chǔ)模板每一臺(tái)階模板由四塊側(cè)塊拼釘而成,其中兩塊側(cè)板的尺寸與相應(yīng)的臺(tái)階側(cè)面尺寸相等;另兩塊側(cè)板的長(zhǎng)度應(yīng)比相應(yīng)的臺(tái)階側(cè)面長(zhǎng)度大150200,高度與其相等,四塊側(cè)板用木檔拼成方框。For staircase foundation template, template at each staircase is rigged up b

31、y 4 slabs, 2 of which are equal to staircase size and the other 2 of which is 150-200 longer than staircase and equal to height. 3、上臺(tái)階模板的其中兩塊側(cè)板的最下一塊要加長(zhǎng),以便擱置在下層臺(tái)階模板上,下層臺(tái)階的四周要設(shè)斜撐及平撐。斜撐和平撐一端釘在側(cè)板的木擋上;另一端頂緊在木樁上。上臺(tái)階的四周也要用斜撐和平撐支撐,斜撐和平撐的一端釘在上臺(tái)階側(cè)板的木檔上;另一端可釘在下臺(tái)階側(cè)板的木檔頂上。The lowest template of the 2 side templa

32、tes at upper staircase should be extended so that they can stand at lower staircase template which should be set with diagonal bracing and level brace. One end of the diagonal bracing and the level brace will be nailed to the wood baffles; and the other end will be nailed to the wood piles. The uppe

33、r staircase should be set with diagonal bracing and level brace, and one end of the diagonal bracing and the level brace shall be nailed to the wood baffles of the upper staircase side template, and another end shall be nailed to the wood baffle top of the lower staircase templates. 4、模板安裝時(shí),先在側(cè)板內(nèi)側(cè)劃出

34、中線(xiàn),在基坑墊層上彈出基礎(chǔ)中心線(xiàn)。把各臺(tái)階側(cè)板拼成框,然后把下臺(tái)階模板放在基坑底,兩者中線(xiàn)互相對(duì)準(zhǔn),并用水平儀校正其標(biāo)高,在模板周?chē)斏夏緲?。上臺(tái)階模板放在下臺(tái)階模板上的安裝方法相同。When installing template, firstly plot center line inside side template and then plot foundation center line on the foundation pit cushion. Make all side templates into square and align two center lines and c

35、heck elevation with level gauge. Pile around the templates then. The installation method for the setting of upper staircase template on lower template is as the same.七、地腳螺栓和地腳螺栓孔的留設(shè)reserve of anchor bolt and its hole 1、地腳螺栓孔的留設(shè),采用12厚細(xì)木工板拼釘模板并作成上大下小錐度,以便于拔出。表面要涂隔離劑,待混凝土達(dá)到一定強(qiáng)度后,用撬棒拆碎取出。Anchor bolt is

36、reserved with fine wood slab of 12 thick rigged up like a cone for pulling. The surface is applied with isolation agent and pulled out when concrete reach required strength. 2、管架地腳螺栓的固定 其定位埋沒(méi)方法采用空裝模板做成定位架,空裝模板用8厚鋼板100寬做成井字架,長(zhǎng)寬均為700。將地腳螺栓下端用10鋼筋與短柱主筋焊牢,上端穿入空裝模板預(yù)留孔內(nèi)并套上螺帽,空裝模板安裝在基礎(chǔ)模板頂面上。以便拆下后周轉(zhuǎn)利用,secur

37、e of pipe rack anchor bolt: it is positioned and embedded, using template as positioner which is shaped with steel sheet of 8 thick,100 wide, 700 long. Securely weld anchor bolt bottom to short stake main Reinforcing bar with 10 Reinforcing bar and its head is through template preserved hole with nu

38、t on. The template is installed at foundation template head for reuse after removal. 3、地腳螺栓安裝時(shí)注意預(yù)埋螺桿的垂直度和露出絲扣長(zhǎng)度。絲扣的保護(hù)采用在澆筑混凝土前將絲扣打上黃油并用塑料布包扎。When installing anchor bolt, pay attention to the perpendicularity of bolt body and exposed length of screw. Screw is protected with grease and well wrapped pr

39、ior to grouting. 4、預(yù)埋鐵件的固定采用在預(yù)埋鐵板的四角鉆孔,用50長(zhǎng)鐵釘釘在木枋上,木枋定位在基礎(chǔ)模板的頂面上進(jìn)行對(duì)位,要求預(yù)埋鐵件與基礎(chǔ)頂面齊平。 Embedded parts are secured, using drill holes on 4 corners of embedded steel sheet and then nailing to the wooden beam with 50mm long nails. Wood slab is positioned at foundation template top for aligning, requiring

40、embedded part flat with foundation top. 八、鋼筋加工、安裝Reinforcing bar wrapping 1、加工前,檢查鋼筋合格證、出廠(chǎng)檢驗(yàn)報(bào)告和進(jìn)場(chǎng)復(fù)檢報(bào)告。Check reinforcing steel bar for quality certificate, inspection report for leaving factory and re-inspection report for entrance.2、鋼筋加工在場(chǎng)外進(jìn)行,用工程車(chē)運(yùn)到現(xiàn)場(chǎng)綁扎。加工好的鋼筋分類(lèi)堆放好,作好標(biāo)注。Reinforcing steel bar is proc

41、essed out of the site, and delivered to wrap place with truck for banding. Reinforcing bar is stored and labeled properly. 3、鋼筋安裝時(shí),受力鋼筋的品種、級(jí)別、規(guī)格和數(shù)量必須符合設(shè)計(jì)要求,鋼筋安裝位置的偏差應(yīng)符合規(guī)范要求。The types, class and quantity of the bearing reinforcing steel bar must accord with the design requirement when installing. The

42、 installation error of the reinforcing bar must accord with the specification.4、鋼筋綁扎。在混凝土墊層上畫(huà)出鋼筋位置線(xiàn)后,綁扎底板鋼筋網(wǎng),四周兩行鋼筋交叉點(diǎn)應(yīng)每點(diǎn)扎牢,中間部分交叉點(diǎn)可相隔交錯(cuò)扎牢,但必須保證受力鋼筋不位移。雙層鋼筋之間用10鋼筋鐵馬凳固定支撐。基礎(chǔ)短柱鋼筋采用在豎向鋼筋上用粉筆劃線(xiàn)然后綁扎箍筋,綁扎時(shí),用鋼管把鋼筋垂直度控制好。Wrapping Reinforcing bar: plot Reinforcing bar position at concrete and wrap bottom Re

43、inforcing bar net. Every cross point of the two reinforcing steel bar around should be wrapped all. The cross point of center part may be wrapped interlaced, but ensure that there is no distance for the reinforcing steel bar. Double Reinforcing bar is supported with 10 Reinforcing bar. For foundatio

44、n short stake Reinforcing bar, plot line with pencil on vertical Reinforcing bar, then wrap steel hoop, ensuring proper perpendicularity of steel pipe and Reinforcing bar. 5、鋼筋保護(hù)層墊塊用1:1水泥砂漿制作505050,在垂直方向使用墊塊時(shí),在墊塊中埋入20#鐵絲。Reinforcing bar protection shim is shaped to 505050 made of 1:1 cement mortar.

45、Bury some 20# iron wire in the shim when using it in vertical orientation6、鋼筋的交叉點(diǎn)應(yīng)采用鐵絲扎牢;Reinforcing bar crossing point should be secured with wire. 7、柱、板的箍筋,應(yīng)與受力鋼筋垂直;箍筋彎鉤疊合處應(yīng)沿受力鋼筋方向錯(cuò)開(kāi)設(shè)置。Steel hoop of pillar and slab is perpendicular with tensile Reinforcing bar. Steel hoop bend overlap area should

46、stagger along tensile Reinforcing bar direction.九、混凝土的澆筑 concrete grouting 1、水泥選用重慶地維水泥廠(chǎng)生產(chǎn)的R32.5或R42.5普通水泥,細(xì)骨料為長(zhǎng)江特細(xì)砂,粗骨料為540卵石,水為自來(lái)水。Select type R32.5 or R42.5 concrete which is produced by CQ DiWei Concrete factory. The fine aggregate is ChangJiang River very fine sand, the coarse aggregate is 540s

47、cree, and the water is tap water.2、混凝土用的水泥應(yīng)檢查產(chǎn)品合格證、出廠(chǎng)檢驗(yàn)報(bào)告和進(jìn)場(chǎng)復(fù)驗(yàn)報(bào)告,砂、卵石應(yīng)按規(guī)定進(jìn)行檢查和試驗(yàn),并作好記錄。Check the concrete for quality certificate, inspection report for leaving factory and re-inspection report for entrance. Check and test the sand and scree according to the regular and keep record. 3、混凝土施工配合比在進(jìn)場(chǎng)后立即

48、將原材料送長(zhǎng)壽區(qū)質(zhì)檢站配制,首次使用的混凝土配合比應(yīng)進(jìn)行開(kāi)盤(pán)鑒定,其工作性應(yīng)滿(mǎn)足設(shè)計(jì)配合比的要求。When concrete mixture ratio is arrived, send raw material to Changshou quality inspection bureau for mixing. The concrete mixture ratio that used for the first time should be inspected open quotation, and the work performance should meet the requireme

49、nt of the design mixture ratio.4、攪拌采用JDY350D型強(qiáng)制式攪拌機(jī),攪拌最短時(shí)間120s,攪拌最短時(shí)間是指自全部材料裝入攪拌筒中起,到開(kāi)始卸料止的時(shí)間。Blend with JDY-350D model compulsory blender. Its shortest blending time is 120s. The shortest blending time means the period from all materials are loaded into blender drum until discharge. 5、施工現(xiàn)場(chǎng)已施工完的工作面(

50、鋼筋安裝綁扎與軸線(xiàn)、標(biāo)高偏差等),均應(yīng)經(jīng)CWEC專(zhuān)業(yè)工程師檢查驗(yàn)收合格后,才能澆搗混凝土。The finished workplace such as Reinforcing bar wrapping, axial and elevation error cannot be concrete grouted until CWEC engineer check. 6、混凝土澆筑前,應(yīng)清除模板內(nèi)的積水、木屑、鉛絲、鐵釘?shù)入s物,并用水濕潤(rùn)模板。Prior to grouting, remove water, wood chip, wire, etc inside the template and m

51、ake template wet before concrete irrigation. 7、混凝土的強(qiáng)度等級(jí)必須符合設(shè)計(jì)要求。檢查混凝土強(qiáng)度試件,應(yīng)在混凝土的澆筑地點(diǎn)隨機(jī)抽取,取樣與試件留置應(yīng)符合規(guī)定。 The strength grade of the concrete must meet the design requirement. Random sample in the concrete irrigation site when testing the concrete strength test-part.8、生產(chǎn)裝置內(nèi)混凝土在原熱電廠(chǎng)修配車(chē)間拌制,拌合好后用工程車(chē)運(yùn)到澆筑地點(diǎn)。

52、生產(chǎn)裝置外混凝土在施工現(xiàn)場(chǎng)拌制,拌合好后用手推車(chē)運(yùn)到澆筑地點(diǎn)?;炷恋恼駬v采用振動(dòng)棒,混凝土澆筑時(shí)分層地進(jìn)行,每層厚度200300,相鄰兩層澆筑時(shí)間間隔不應(yīng)超過(guò)2小時(shí)。The concrete used in the plant will be blended in the maintenance workshop of original thermo-eletric plant, and will be transported to the irrigating site with vehicle. The concrete used out of the plant will be ble

53、nded on site, and will be transported to the irrigating site with handcart. Use vibration bar to tamper concrete. Concrete is grouted layer by layer for 200-300mm thick each layer. Interval of adjacent layer is grouted no more than 2h. 9、 模板的拆除必須在砼澆筑完畢24h后進(jìn)行,拆除的模板及鋼管架必須堆放整齊。 Template is removed 24h

54、after irrigation. Removed template and pipe rack must be properly stacked. 10、砼澆筑完畢后,應(yīng)在12小時(shí)以?xún)?nèi)加蓋草墊和澆水,澆水次數(shù)應(yīng)以保持砼有足夠的潤(rùn)濕狀態(tài)為準(zhǔn),養(yǎng)護(hù)期不小于7晝夜?;炷翉?qiáng)度達(dá)到1.2MPa前,不得在其上踩踏或安裝模板及支架。When concrete is grouted, it is covered with bedding and poured with water within 12h. the intervals of pouring water should depend on whe

55、ther concrete is wet enough. Maintaining period is no less than 7days. Do not step or install template and support on the concrete before its strength reach to 1.2MPa.混凝土公路及擋土墻施工Construction Plan of concrete retaining wall第一節(jié) 混凝土公路Section One :Concrete Road 一、工程概況Engineering summary消防通道水泥混凝土路面為240厚C

56、30混凝土面層,墊層為200厚5%水泥穩(wěn)定碎石、150厚級(jí)配碎石,面積1950;檢修公路水泥混凝土路面為180厚C30混凝土面層,200厚5%水泥穩(wěn)定碎石、150厚級(jí)配碎石,面積1950。公路抗噪折強(qiáng)度4.5MPa。50厚C25彩色混凝土路板150,C20混凝土路沿石、護(hù)肩帶12m3。Cement concrete road for fire is C30 of 240 thick and shim layer 5% cement stable debris of 200 thick and 150 thick debris, the area is 1950m2. That for main

57、tenance is C30 of 180 thick and 5% cement stable debris of 200 thick and 150 thick debris, the area is 1950m2. Snap-resistance strength is 4.5Mpa. the area of 50 thick C25 color concrete ground tile is 150,C20 concrete road-side stone is 12m3.二、作業(yè)工序Work procedure搭設(shè)防護(hù)欄 平整場(chǎng)地 堅(jiān)石切割或風(fēng)鎬開(kāi)鑿平場(chǎng)檢驗(yàn)級(jí)配碎石水泥穩(wěn)定碎石立側(cè)模

58、板鋼筋設(shè)置傳力桿安裝混凝土澆筑養(yǎng)護(hù)切縫養(yǎng)護(hù)瀝青橡膠填縫安裝路沿石、護(hù)肩帶安裝彩色路板。Set protection railflat the fieldfirm rock cutting or air pick cuttingcheck the fieldgrading breakstonefix the breakstone with cementset side templateset reinforcing steel barinstall dowel barconcrete irrigationmaintenancecut linesmaintenancefill the lines with asphaltum and rubberinstall road border stone install color ground tile.三、平整場(chǎng)地Flat the field1、CO#2裝置東北面公路平場(chǎng),應(yīng)將兩邊毛石混凝土擋土墻的土石方平場(chǎng)同時(shí)進(jìn)行,堅(jiān)石采用巖石開(kāi)采切割機(jī)

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