沉井方案11(共15頁(yè))

1、上海迪士尼樂(lè)園項(xiàng)目GC-10主入口和花園總包工程 技術(shù)標(biāo) 15/15一、聲光(shn un)塔液壓裝置（HPU）概況(gikung)HPU summary 聲光(shn un)塔位置：燈塔建筑219，用于在表演時(shí)升起照射舞臺(tái)，平時(shí)則暗藏在燈塔建筑中。塔的建筑形式見(jiàn)于建筑圖紙：1A-311Acoustooptic tower position: lantern tower of 219 is used to flash the stage when performing, and hided from the lantern tower at other times. The building

2、types of tower is shown on the construction drawing of 1A-311. 燈塔3# light tower 3# 燈塔4# lantern tower4#聲光塔由不銹鋼內(nèi)膽和200毫米厚的鋼筋混凝土外殼組成，地下層標(biāo)高為從-3.240米，管底標(biāo)高為：-17.04米。鋼管材質(zhì)為00Cr17Ni14Mo2(00Cr17Ni14Mo2(316L)不銹鋼，內(nèi)徑為1240毫米，壁厚20毫米（以上信息詳見(jiàn)于2S-502號(hào)圖紙及建筑圖紙）：Acoustooptic tower consist of stainless steel and 200mm ste

3、el concrete, and the EL of subsurface layer is -3.240m and the EL of tube bottom is -17.04m.The steel tube texture is stainless steel of 00Cr17Ni14Mo2(00Cr17Ni14Mo2(316L), and its internal diameter is 1240mm, the pipe thickness is 20mm.(See details in the drawing of 2s-502 and construction drawing).

4、二、技術(shù)方案分析 Analysis of technical solutions1、根據(jù)工程條件，采用明挖方法勢(shì)必暴露出已經(jīng)打好的工程樁，且開(kāi)挖范圍大，基坑很狹小，不宜采用；1. According to the construction conditions, ways of open excavation will make the pipe exposed. The range of excavation is big and foundation ditch is too narrow to use the way of open excavation.2、若采用泥漿護(hù)壁就地灌注空心(

5、kng xn)樁方法，則面臨不銹鋼管在混凝土和泥漿浮力下定位困難的問(wèn)題(wnt)?，F(xiàn)澆混凝土的問(wèn)題(wnt)在于：旦比重較大混凝土浮力下移位，將無(wú)法糾正，而混凝土在不斷地凝固，從而導(dǎo)致整個(gè)組件報(bào)廢。Ifweusethemudto grouthollowpile on the site, stainlesssteelwillbedifficulttolocatebecauseofconcreteandmud buoyancy. The problem of concrete casting-in-place as below: once a larger proportion of concre

6、te buoyancy is shifting, it cannot be corrected, and the concrete is solidified in constantly, which leads to the entire discarding.3、經(jīng)過(guò)討論，巖土工程師提供的建議：場(chǎng)外預(yù)制，工地吊裝，灌漿固定的技術(shù)路線，較為合理。3. Advice provided by geotechnical engineer is to prefabricate off the site and hoist on the site, and grout the technical ro

7、ute fixed, which is reasonable after discussion. 4、預(yù)制件吊裝的技術(shù)路線應(yīng)解決的問(wèn)題有：4. Problems for solving by the technical route of preformed unit :大型不銹鋼焊接件-轉(zhuǎn)運(yùn)-包覆混凝土-養(yǎng)護(hù)后轉(zhuǎn)運(yùn)Large stainless steel weldment - transhipment- concrete coating- transhipment after curing就地干成孔 (不能浸泡在泥漿里，也就沒(méi)有浮力問(wèn)題）To make hole on site(No soa

8、k in mud , no problems of buoyant force)吊裝和校正垂直度（預(yù)制件不受到浮力干擾，重心在下方有利于垂直）Hoisting and correction perpendicularity ( Prefabticated member is not interferenced with buoyant force , center of gravity below is helpful to erect)灌漿固定（采用分層澆筑的自密實(shí)細(xì)骨料混凝土）To fix the grouting(fine aggregate concrete of delaminati

9、on grouting will be used)在髙水位下的干成孔，將采用旋挖鋼套管工藝來(lái)實(shí)現(xiàn)，鋼管旋挖到底后嵌入髙壓旋噴加固體內(nèi)，下口是封閉的，形成一個(gè)密閉的空腔。Holes under high water level will be completed with steel sleeve pipe digging helically, and casting concrete bottom by jetting helically with high pressure. The bottom is closed and shaping a closed cavity.三、施工流程Con

10、struction procedure工況一:在加工廠內(nèi)采用卷板焊接方法制作不銹鋼組件 Working condition1: To product stainless steel modules by ways of roll bending in processing factory. 工況二：不銹鋼組件轉(zhuǎn)運(yùn)到混凝土預(yù)制廠內(nèi)，包覆混凝土Working condition2: Stainless steel modules will be transferred to the precasting concrete factory and cover concrete .工況三：旋挖機(jī)進(jìn)場(chǎng)W

11、orking condition3: delivery of helical digger 1埋設(shè)(mi sh)護(hù)筒Protective sleeve installation 2 挖土 Earth excavation 3 Casting concrete Bottom 4 Stainless steel delivery of concrete precast module 5 吊裝(diozhung) Hoisting 6 二次校正(jiozhng)Correct secondly 7 校正(jiozhng)工況下的剖面 Section for correction 8 灌漿固定Fix

12、with grouting9 灌漿材料可以選用高流動(dòng)性、無(wú)收縮(shu su)、自密實(shí)細(xì)石混凝土Grouting materials can choose high liquidity, no-shrink and self-compaction coarse aggregate concrete.Crawler crane cooperating with helical diggerPosition of light towerHydraulic full rotation helical diggerDismantling stockpiling yard for steel sleev

13、eflat bed truckPosition of light tower10 作業(yè)區(qū)平面(pngmin)規(guī)劃見(jiàn)上圖： Operating area plan is shown as above首先(shuxin)完成西側(cè)聲光塔旋挖鉆孔埋設(shè)套管，套管埋設(shè)完成后，西側(cè)吊裝作業(yè)開(kāi)始。旋挖鉆機(jī)轉(zhuǎn)移到東側(cè)進(jìn)行鉆孔和埋設(shè)鋼套管作業(yè)。Digging helically the holes and filling the sleeve pipe for the west of acoustooptic tower firstly. The hoisting works begin after the fi

14、lling of sleeve pipe. Then the helical digger transfer to the east to continue the work of boring and filling of sleeve pipe. 附件(fjin) ：預(yù)制件制作(zhzu)方案 Solutions of making prefabricated member迪斯尼城堡(chngbo)預(yù)制不銹鋼管-混凝土構(gòu)件總長(zhǎng)18640mm ,其中不銹鋼管長(zhǎng)18240mm、內(nèi)徑1240mm，壁厚20mm.外包200mm厚混凝土，混凝土部分長(zhǎng)為13400mm.構(gòu)件要求垂直度精準(zhǔn)。The ov

15、erall length of stainless steel component part prefabricated of Disney Castle is 18640mm, the length of stainless steel pipe is 18240 mm , the internal diameter is 1240mm ,and the pipe thickness is 20mm. Outsourcing 200mm thick concrete, the length of concrete partly is 13400mm. Perpendicularity of

16、component should be precise.1、預(yù)制技術(shù)方案Technical solutions for prefabrication本構(gòu)件加工主要難度為不銹鋼管與底面垂直度精度的保證，13.4米長(zhǎng)混凝土部分的澆筑方 案。我們經(jīng)過(guò)討論制定以下技術(shù)方案，確保該構(gòu)件預(yù)制的質(zhì)量：The difficulty for processing this component is not guarantee the perpendicularity precision between the stainless steel and its bottom. Solutions are devel

17、oped to ensure the quality of prefabrication components after discussion.不銹鋼組件的焊接：由金屬構(gòu)件廠進(jìn)行，采用卷板焊接的方法對(duì)20毫米不銹鋼板 材進(jìn)行號(hào)料、裁切、卷板、校正、焊接、二次校正。底板和加勁環(huán)采用30毫米平板制作并焊接到筒體上。施焊的方向和程序應(yīng)注意避免焊接應(yīng)力的累積導(dǎo)致不可逆的變形。根據(jù)吊裝的要求和混凝土包覆的要求，在指定位置增加吊耳、栓釘?shù)冉M件。焊接完畢后進(jìn)行檢測(cè)和驗(yàn)收。通過(guò)雇主駐廠代表驗(yàn)收后，發(fā)運(yùn)到預(yù)制廠內(nèi)，進(jìn)行混凝土包覆工序。Welding of stainless steel components:

18、 to mark off, cut, bend rolls, correct, weld, and correct secondly 20mm stainless steel panel by ways of welding bending rolls at the mental construction factory. The bottom plate and stiffening rings use the 30mm panel to make and weld to the barrel. The direction and procedure of welding should av

19、oid the accumulation of welding stress which may lead to irreversible deformation .According to the requirement of hoisting and concrete coating, lifting lugs and male pins and other components should be added to the designated spot. Inspect and accept after welding. Dispatch them to the prefabricat

20、ing factory, and do concrete coating after the acceptance by resident represent of owner.為了保證不銹鋼管的垂直度，我們擬采用直立模具澆筑混凝土方案,模具直立放置， 從上而下澆筑混凝土，考慮到混凝土澆筑部分長(zhǎng)8米，不易振搗，同時(shí)混凝土的澆筑會(huì)造成 不銹鋼管的上浮，從而造成構(gòu)件的偏差。我們將模具分成6節(jié)，上下模具髙為1m，中間四節(jié)為每節(jié)1.5米，每節(jié)圓環(huán)模具采用兩片相同的半圓環(huán)模具拼裝組成，在每節(jié)混凝土繞筑完 成，混凝土初凝之前，進(jìn)行上一節(jié)模具的拼裝并澆筑該節(jié)混凝土，以此類推，澆筑至整個(gè)混凝土完成。最下面一節(jié)

21、設(shè)置成1m主要是考慮將因混凝土澆筑而造成的不銹鋼管上浮的浮力 降到最小，保證構(gòu)件的精度，分節(jié)如圖1所示。To ensure the perpendicularity of the stainless steel pipe, we take the solution of pouring concrete with vertical mould. The mould is laid vertically and pouring concrete from top to bottom. Considering the length of a part of concrete poured is 8

22、m, it is difficult to vibrate, meanwhile, the pouring of concrete will lead to the rise of stainless steel pipe which lead to the error of component part .The mould will be divided into 6 sections, the height of mould between top and bottom is 1m, the intermediate sections height is 1.5m per section

23、. Each circular ring mould is consolidated by two same semicircle ring mould. Continue the consolidation of mould and pour the concrete before the initial set of concrete, and the like, pouring concrete until all the concretes are poured. The final section is set 1m, because it can make the buoyant

24、force of pouring concrete minimum to guarantee the precision of component part. See details in drawing 1.Pre-embedment for located steel platePlatform of steel mouldPrefabricated concrete baseLocating device for the bottomLocating device for the topSteel mouldHookStainless steel pipeSteel rack圖1 不銹鋼

25、管混凝土構(gòu)件整體(zhngt)預(yù)制方案Prefabrication solution of stainless steel pipe and concrete component(3)為了保證(bozhng)不銹鋼管的垂直度和消除因混凝土澆筑造成的不銹鋼管的上浮問(wèn)題，我們擬預(yù)先預(yù)制(y zh)加工如附件：混凝土和鋼結(jié)構(gòu)加工深化圖中所示的預(yù)制底座構(gòu)件。通過(guò)加勁肋和錨固鋼筋將預(yù)制件和不銹鋼管的底座牢固連接 To ensure the perpendicularity of stainless steel pipe and avoid the rise of stainless steel pipe

26、 due to concrete pouring, we make a plan for prefabrication as attachment. Connect the prefabricated member with the bottom of stainless steel pipe solidly by the stiffening rib and anchorage steel.(4) 混凝土采用C35P6抗?jié)B混凝土。Water-tight concrete of C35p6 will be used(5)預(yù)制件頂部預(yù)留插筋，伸入后續(xù)施工的基礎(chǔ)底板并澆成整體。The top of

27、 prefabricated member should reserve the dowel bar, enter into the foundation slab of subsequent construction and pouring them to be integral.(6) 混凝土上部澆筑上安置對(duì)稱的兩只吊環(huán)，吊環(huán)下部錨筋焊接在不銹鋼管上，以保證吊環(huán)的承載力。Two lifting lug will be installed symmetrically at the top of concrete. The anchor bar of lifting lug bottom sh

28、ould weld on the stainless steel pipe to guarantee the bearing capacity of lifting lug.(7)混凝土澆筑成型完畢后,設(shè)置同條件養(yǎng)護(hù)混凝土試塊，強(qiáng)度達(dá)到設(shè)計(jì)值就可以出廠。 Set up the concrete samples in the same caring condition after the pouring concrete is molding. It can be delivered when the strength is up to the design value(8) 我們(w men)

29、在迪斯尼園區(qū)5Km內(nèi)有預(yù)制(y zh)預(yù)制構(gòu)件廠，可用于該預(yù)制構(gòu)件的加工，可以確保 運(yùn)輸?shù)目旖莺捅憷?。We have prefabricated unit factory in distance of 5km in Disney Park. It can be used to process the prefabricated units to guarantee the convenient transport.2、構(gòu)件加工(ji gng)工藝流程 Draft procedure for component processing 預(yù)制底座構(gòu)件的加工預(yù) 制底座構(gòu)件的安裝 不銹鋼管垂直度調(diào)整及固

30、定 鋼筋籠骨的綁扎與安裝就位 鋼模安裝（第一節(jié)） 混凝土饒筑與振搗 鋼模安裝（第二節(jié)） 混凝土澆筑與振搗 鋼模安裝(第六節(jié)) 混凝土澆筑與振搗 養(yǎng)護(hù) 脫模 起吊 堆放 出廠 安裝Processing of prefabricated base units Installation for base units Adjustment and fixture of the perpendicularity of stainless steel pipe Fasten and installation for steel keel Installation for steel mould( Sect

31、ion 1) Pouring and vibration for concrete Installation for steel mould( Section 2) Pouring and vibration for concrete Installation for steel mould ( Section 6) Curing of pouring and vibration for concrete Demoulding Hoisting Stockpiling Delivery Installation如果建筑師有要求，預(yù)制件可以很方便地刷上一層黑色聚氨酯涂料提高防水能力，這是就地灌注

32、混凝土所無(wú)法比擬的優(yōu)勢(shì)。Fabricated units can be brushed a paints of black Polyurethane to improve the waterproofing capacity if required by the architect . Its an incomparable advantages for pouring concrete on site.附件(fjin)：旋挖成孔埋設(shè)(mi sh)套筒方案 Solutions for digging holes helically and filling bush1 設(shè)備(shbi) Equi

33、pment擬選用如圖中的拔樁設(shè)備：RT-200全回轉(zhuǎn)鉆機(jī)，設(shè)備照片及參數(shù)見(jiàn)下圖1及表格。We plan to choose the pile withdrawal equipment as the picture show. Its full slewing drill of RT-200.See the equipment photos and parameters as below:圖1 RT-200型號(hào)：Model全回轉(zhuǎn)鉆機(jī)RT-200 Full slewing drill of RT-200描述：Description挖掘口徑：2000mm（鋼管外徑為1980mm）Excavation

34、 diameter:2000mm(The external diameter of steel pipe is 1980mm)套管拉拔力：2600（265）瞬時(shí)2990（305）KN(tf)Pulling capacity of sleeve:2600(265), instantaneously,2990(305)KN(tf)套管壓入力：最大470（48）+自重220（22）KN(tf)Press-in enforcement of sleeve:MAX470(48)+ Self weight 220(22)KN(tf)壓入行程：750mmPress-in stroke:750mm2 套管回轉(zhuǎn)

35、 Sleeve rotationRT-200型采用楔型夾緊機(jī)構(gòu)將回轉(zhuǎn)鉆機(jī)的回轉(zhuǎn)支承環(huán)與套筒固定，楔型夾緊機(jī)構(gòu)的原理圖見(jiàn)圖2、圖3。RT-200 uses the wedge-type fastening device to fix the rotating retaining ring of rotation drill and sleeve. See the principle of the wedge-type fastening device in the drawing 2&3.夾緊油缸位于鉆機(jī)的固定部分，由于不與套管一起回轉(zhuǎn)，從而液壓管可以始終處于接續(xù)狀態(tài)，回轉(zhuǎn)時(shí)無(wú)需將夾緊裝置液壓管

36、分離，可以大為提高鉆進(jìn)的效率。SleeveTight the fixed portion of fuel tank which is standing on the drill. Because it dont rotate with the sleeve, the hydraulic tube can be in persistent state all the time. There is no need to separate the hydraulic tube of fastening device so that it can improve the efficiency of d

37、rill.Clamping fuel tankWedge blockRotation supportFluid motorOffpatternWedge blockClamping fuel tankSleeveRotation supportFluid motorOnpattern圖2 楔形夾緊機(jī)構(gòu)及回轉(zhuǎn)裝置(zhungzh)原理 圖3 楔形夾緊機(jī)構(gòu)(jgu)及回轉(zhuǎn)裝置原理圖 Wedge fastening device and theory of rotation device Wedge fastening device and theory of rotation device3 套管

38、(to un)壓入 Jacking sleeveA、套管插入初期（自重壓入）Primary stage of jacking sleeve在套管插入初期會(huì)對(duì)以后套管的垂直精度有很大影響，所以須慎重壓入。（采用經(jīng)緯儀雙向控制）。套管在插入初期,應(yīng)利用套管自重壓入，禁止強(qiáng)行壓入套管。Primary stage of jacking sleeve will have a good effect on the perpendicularity precision of the later sleeve, so the sleeve must be jacked carefully.(Theodolit

39、e is used to control bilaterally).Self weight jacking should be used at the primary stage of jacking sleeve. Forced jacking is not allowed. 只有當(dāng)自重進(jìn)行壓入速度變慢時(shí)，方可逐步增加壓入力。It can gain the pressure gradually when the speed of self-weight jacking become slow.采用采用自重壓入時(shí)，壓入力計(jì)算公式為：When using ways of self-weight

40、jacking, the computational formula of the pressure is as below:壓入力（自重）F=鉆機(jī)的一部分自重（W1）+套管自重（W2）周邊摩阻力(R)+前端阻力（D）鉆機(jī)的一部分自重RTP-200E-2型為25t。Pressure (self-weight) F=Self weight of a part of drill (w1)+Self weight of sleeve(w2) Frictional resistance around (R) +The frictional resistance of front end(D)Self-

41、weight of a part of drill of RTP-200E-2 is 25tB、挖掘后期（使用液壓進(jìn)行手動(dòng)壓入）Excavation anaphase (Use hydraulic pressure with hand)進(jìn)入挖掘中期，當(dāng)采用自重壓入速度變慢時(shí)，將液壓動(dòng)力站“壓入力調(diào)整盤(pán)”向右旋轉(zhuǎn)，液壓會(huì)逐步上升，此時(shí)壓拔鈕在置于“壓入”狀態(tài)時(shí)，液壓油缸向推力油缸供油，此時(shí)壓入模式轉(zhuǎn)為液壓壓入，此時(shí)壓入力計(jì)算公式為：Entering the medium term of excavation, turn the jacking adjustment panel of hydrau

42、lic pressure power station right when the speed of self-weight pressure become slow, the hydraulic pressure will increase gradually, and feeding fuel to the push action cylinder when the press and pull button is in state of jacking, and the pattern turn the hydraulic pressure. The formula as below:壓

43、入力F=鉆機(jī)的一部分自重(W1)+套管自重(W2)+液壓力（P）Jacking pressure F= Self weight of a part of drill (w1)+ self-weight of sleeve(w2)+hydraulic pressure(P)若“壓入力調(diào)整盤(pán)”向右旋轉(zhuǎn)到底，液壓力過(guò)度上升，在超過(guò)下部機(jī)架自重時(shí)會(huì)出現(xiàn)下部機(jī)架浮起的情況.浮起的瞬間會(huì)增加使套管傾覆的負(fù)荷，導(dǎo)致套管垂直精度變差，為防止下部機(jī)架浮起，應(yīng)在鉆機(jī)兩側(cè)放置配重或使用“壓入力調(diào)整盤(pán)”調(diào)整壓入力。If the “jacking pressure adjustment panel” turn righ

44、t end, the hydraulic pressure will increase excessively. The bottom of rack will rise when it exceed the self-weight of the bottom of rack. The moment of float will increase the load which can make sleeve overturning, which lead to the perpendicularity precision become worse. To prevent the float of

45、 the rack bottom, we should lay additional weight or use “jacking pressure adjustment panel” at the two sides of drill to adjust the jacking pressure.Steel sleeveCrushing earthAvoiding the float by the additional weightFull rotation drillHydraulic pressure Pw3+w4在套管壓入時(shí)必須根據(jù)土質(zhì)的變化情況好壓入力、回轉(zhuǎn)(huzhun)速度，以獲

46、得最佳的壓入功效,圖5為不同土層中比較合適的壓入力和回轉(zhuǎn)(huzhun)速度參考值。We should be in accordance with the change of earth, jacking pressure and rotation to get the excellent effect when the sleeve is jacking. The jacking pressure which is suitable for different soil horizon and the rotation speed value are shown in drawing5.Fo

47、undation conditionRotation speedPressure rotation & torque riseStandard of drilling efficiencyGrit stratum13m/minLow,(14)2030 ton-m1025min/mBowlder stone46 m/minLow,(35)1030ton-m30120 min/mSteel concrete510m/minLow,(58)1030ton-m3060 min/mSoft rock510m/minLow,(58)2030ton-m1030 min/mHard rock46m/minLo

48、w,(35)1020ton-m60300 min/m4 渣土(zh t)排出 Rubbish discharge渣土排出采用沖抓斗(zhu du)，根據(jù)本工程配備的1980管，選用相對(duì)(xingdu)應(yīng)的沖抓斗。圖7即為采用沖抓斗的現(xiàn)場(chǎng)照片。Percussion Clamshell is used to discharge muck. The percussion clamshell is chosen in accordance with the 1980 equipped by the project. The photos of percussion clamshell on the s

49、ite are shown in drawing7Crushing earth by percussion clamshellSteel sleeveCrushing earthFull rotation drill 圖7 沖抓斗清除Disposal of percussion clamshell5 施工(sh gng)工藝流程 Construction procedure圖8 拔出(b ch)流程圖Pullout FlowchartBreaking down the pavement, chip away the grouting beam and measure the center of

50、 pipe positionSet up the platform for steel and lay steel plateFix the full rotation location and coordinate the equipment locationInstall the sleeves and cutting the earth around the pipeOperating roomBalanced RT,totation reverse rackSteel sleevePrefabricated steel plateReverse rackPower box圖9 全回轉(zhuǎn)設(shè)

51、備(shbi)安裝圖 Installation drawing for full rotation equipment6 施工(sh gng)過(guò)程描述 Description for construction process61 施工(sh gng)準(zhǔn)備Mobilization檢修機(jī)械設(shè)備，特別是液壓系統(tǒng)的密封狀況，最大限度避免液壓油泄露。Maintain the equipment, especially the seal situation of hydraulic pressure system. Avoid the leakage of hydraulic fluid.針對(duì)迪士尼項(xiàng)目環(huán)

52、保要求嚴(yán)苛的特點(diǎn)，機(jī)械設(shè)備就位場(chǎng)地應(yīng)鋪設(shè)接油盤(pán)或者地膜、彩條布或者鋼板，鋪設(shè)吸附材料，把可能滴漏的液壓油吸附，防止污染地表造成環(huán)境事故。According to the character of keeping strict with environment protection for Disney project, the equipment site should lay oil drip pan, mulching film, colorful strips, steel plate and sorbing materials which can sorb hydraulic fluid leaked to prevent the pollution of earths surface.包括組織、安排施工人員，物資、材料、機(jī)具準(zhǔn)備，施工現(xiàn)場(chǎng)布置，機(jī)械設(shè)備拼裝，安全、技術(shù)交底等施工前的所有準(zhǔn)備工作。The preparation work Include organization, constructor, resource and materials, equipment preparation, layout of construction site, consolidation of equipm