重慶某化工項目鋼筋焊接施工方案(中英文對照)

1、reinforcing steel welding construction scheme鋼筋焊接施工方案document no.:文件編號：cni23-cm-018 approved： 批 準(zhǔn)： audit： 審 核： fabrication: 編 制： contents 目錄1、 project overview工程概況.1-32、 fabrication basis編制依據(jù).3-3三、application scope適用范圍.3-3四、manual electric arc welding手工電弧焊.4-95、 flash butt welding閃光對焊.9-13六、reinforc

2、ing steel electroslag pressure welding鋼筋電渣壓力焊14-15七、safety attentions安全注意事項.16-161、 project overview工程綜述： this project is linde huayi(chongqing) gases co., ltd 1 billion nm3/year syngas co/h2 project, located in chongqing(changshou) chemical industry park, and the main work contains substation、offic

3、e、parts stock、pressure swing adsorption unit, mdea washing unit 1， meda washing unit 2, high temperature shift unit, feed gas compression unit 1，feed gas compression unit 2，deoxo unit 1，deoxo unit 2， temperature swing adsorption unit 1， temperature swing adsorption unit 2， cold box 1， cold box 2， co

4、mpression unit 1，compression unit 2， compression unit. the foundation bed is c15 concrete; the unit foundation is using c30 concrete. together with concrete roads, a total of about 20000 party site concrete.本項目為林德化醫(yī)（重慶）氣體有限公司10 億nm3/年合成氣制備co/h2 項目，位于重慶（長壽）化工園區(qū)內(nèi)， 其中主體工作包括變電所、辦公樓、備件倉庫、變壓吸附單元、mdea洗滌單元1

5、、 meda洗滌單元2、高溫變換單元、原料氣壓縮單元1、原料氣壓縮單元2、deoxo單元1、deoxo單元2、變溫吸附單元1、變溫吸附單元2、冷箱單元1、冷箱單元2、壓縮單元1、壓縮單元2、壓縮單元?；A(chǔ)墊層c15混凝土，單元基礎(chǔ)采用c30混凝土。加之混凝土道路等，現(xiàn)場混凝土總量約20000方。the unit equipment district covers an area of, equipment foundation, on the welding requirement of reinforcing steel joint is high. in order to ensure t

6、he construction safety、quality、high efficiency and especially the preparation of the scheme.本單元設(shè)備裝置區(qū)占地面積大，設(shè)備基礎(chǔ)多，對鋼筋接頭焊接要求高。為保證施工安全、優(yōu)質(zhì)、高效完成，特編制本方案。二、fabrication basis編制依據(jù)：related construction drawing and design requirement相關(guān)施工圖紙及設(shè)計要求reinforcing steel welding and acceptance specificationjgj18-2012鋼筋焊接

7、及驗收規(guī)程jgj18-2012 technical specification of reinforcing steel mechanicaljgj107-2010鋼筋機(jī)械連接技術(shù)規(guī)程jgj107-2010upsetting straight thread reinforcing steel jointjgj71-2005鐓粗直螺紋鋼筋接頭jgj71-2005三、application scope適用范圍：reinforcing steel connection shall adopt binding、mechanical and welding. foundation raft board

8、and beam steel shall adopt manual electric arc welding、flash butt welding; and the column and bar shall adopt electroslag pressure welding.本工程鋼筋連接采用綁扎連接、機(jī)械連接和焊接?；A(chǔ)筏板、梁鋼筋采用手工電弧焊、閃光對焊；柱筋采用電渣壓力焊。四、手工電弧焊： 4.1、construction preparation施工準(zhǔn)備： 4.1.1、material and main tools材料及主要機(jī)具： 4. 1.1.1 reinforcing steel:

9、 the grade and diameter of reinforcing steel shall meet the design requirement, and have merchandise certification and retest report. the imported bar also shall have chemistry retest report, chemical composition shall meet welding requirement, and the solderability test. the anchor fluke of embedde

10、d parts shall adopt i、ii grade bar, which shall not old rusty and greasy oil.鋼筋：鋼筋的級別、直徑必須符合設(shè)計要求，有出廠證明書及復(fù)試報告單。進(jìn)口鋼筋還應(yīng)有化學(xué)復(fù)試單，其化學(xué)成分應(yīng)滿足焊接要求，并應(yīng)有可焊性實驗。預(yù)埋件的錨爪應(yīng)用、級鋼筋。鋼筋應(yīng)無老銹和油污。 4. 1.1.2 steel products: the steel products of embedded parts shall not crack、corrosion、cicatrix、deformation, and its cross dimensi

11、ons and mechanical properties shall meet design requirement.鋼材：預(yù)埋件的鋼材不得有裂縫、銹蝕、瘢痕、變形，其斷面尺寸和機(jī)械性能應(yīng)符合設(shè)計要求。 4. 1.1.3 welding rod: welding rod brand shall meet design regulation. if no regulation in design, it shall meet following requirement and the quality of welding rod also shall meet following requir

12、ement:焊條：焊條的牌號應(yīng)符合設(shè)計規(guī)定。如設(shè)計無規(guī)定時，應(yīng)符合下表的要求，焊條質(zhì)量應(yīng)符合以下要求：the welding rod brand of reinforcing steel electric arc welding 鋼筋電弧焊使用的焊條牌號item項次bar grade鋼筋級別overlap welding、 ligating bud welding搭接焊、幫條焊groove welding坡口焊1級e4303 e4303e43032級e4303 e4303e50033級e5003 e5003e50034、級與鋼板焊接e4303e4303 4.1.1.3.1 the weldin

13、g rod coating surface shall not crack、pore and irregularity defects, and not with the naked eye can see that the eccentricity.焊條藥皮表面應(yīng)無裂縫、氣孔、凹凸不平等缺陷，并不得有肉眼看得出的偏心度。 4.1.1.3.2 during welding, the electric arc shall combustion stability, coating uniform melting and without blocking drop phenomenon.焊接過程中

14、，電弧應(yīng)燃燒穩(wěn)定，藥皮熔化均勻，無成塊脫落現(xiàn)象。 4.1.1.3.3 welding rod must accord to requirement of welding rod instructions to stoving, and then using.焊條必須根據(jù)焊條說明書的要求烘干后才能使用。 4.1.1.3.4 welding rod must have merchandise certification and batch number.焊條必須有出廠合格證、批號。 4.1.1.4 arc welding machine、welding cable tray、electric we

15、lding pliers、helmet、chipper、wire brush、file、hammer and angle grinder etc.弧焊機(jī)、焊接電纜、電焊鉗、面罩、塹子、鋼絲刷、銼刀、榔頭、角磨機(jī)等。 4.1.2、work conditions作業(yè)條件： 4.1.2.1 welder must have welder certification (original copy).焊工必須持有焊工證(原件)。 4.1.2.2 the steel bar ligating bud welding size、crevasse angle、reinforcing steel termina

16、tion clearance、joint position and reinforcing steel axis shall meet regulation.幫條尺寸、破口角度、鋼筋端頭間隙、接頭位置以及鋼筋軸線應(yīng)符合規(guī)定。 4.1.2.3 power source shall meet requirement.電源應(yīng)符合要求。 4.1.2.4 working site shall have safety protection facilities、fireproof and necessary ventilation system, to avoid the occurrence of bu

17、rn、shock、poisoning and fire accidents.作業(yè)場地要有安全防護(hù)設(shè)施、防火和必要的通風(fēng)措施，防止發(fā)生燒傷、觸電、中毒及火災(zāi)等事故。 4.1.2.5 familiarity with drawing, do well technical disclosure.熟悉圖紙，做好技術(shù)交底。4.2、operation process操作工藝： 4.2.1 process procedure工藝流程：determine welding parameter 確定焊接參數(shù)send samples送試inspect equipment檢查設(shè)備select welding para

18、meter選擇焊接參數(shù)test welding work, test piece試焊接作業(yè)試件quality inspection 質(zhì)量檢驗start welding施焊4.22 check power source、welding machine and tools. welding machine grounding wire shall reinforce with good contact, to prevent arcing and burn reinforcing steel.檢查電源、焊機(jī)及工具。焊機(jī)地線應(yīng)與鋼筋接觸良好，防止因起弧而燒傷鋼筋。4.2.3 select weldi

19、ng parameters. according to the rebar grade、diameter、 joint type and weld location, select the appropriate electrode diameter、welding layer and welding power source, ensure the welding seam and the steel has good fusion.選擇焊接參數(shù)。根據(jù)鋼筋級別、直徑、接頭型式和焊接位置，選擇適宜的焊條直徑、焊接層數(shù)和焊接電源，保證焊縫與鋼筋熔合良好。4.2.4 welding test、si

20、mulation test. before each batch of reinforcing steel formally welding, it shall be weld 3 simulated specimens by tension test, after the test, then can be batch production according to the determined welding parameters.試焊、做模擬試件。在每批鋼筋正式焊接前，應(yīng)焊接3個模擬試件做拉力試驗，經(jīng)試驗合格后，方可按確定的焊接參數(shù)成批生產(chǎn)。 4.2.5 start welding op

21、eration施焊操作：4.2.5.1 arc strike: with shim plate or steel bar ligating bud welding joints, arc shall be on the steel plate or steel bar ligating bud welding to carry out. without reinforcing steel shim plate or steel bar ligating bud welding of the joint, arc strike shall be at position that formed w

22、elding seam, to prevent burns main reinforcement.引?。簬в袎|板或幫條的接頭，引弧應(yīng)在鋼板或幫條上進(jìn)行。無鋼筋墊板或無幫條的接頭，引弧應(yīng)在形成焊縫的部位，防止燒傷主筋。 4.2.5.2 location: when welding, it shall first weld anchor point then start welding.定位：焊接時應(yīng)先焊定位點再施焊。4.2.5.3 arc manipulation: when arc manipulation, the straight forward、lateral run out and f

23、eeding welding rod three action shall coordinate smooth.運條：運條時的直線前進(jìn)、橫向擺動和送進(jìn)焊條三個動作要協(xié)調(diào)平穩(wěn)。 4.2.5.4 put out arc: when put out electric arc and pull out, molten pool shall be filled with, pay attention not on the work surface by arc scratch. 收?。菏栈r，應(yīng)將熔池填滿，拉滅電弧時，應(yīng)將熔池填滿，注意不要在工作表面造成電弧擦傷。 4.2.5.5 multi-layer

24、 welding: if reinforcing steel diameter larger, it shall need for multi-layer welding, and shall be stratified discontinuous welding, after welding each layer shall be scarfing cinder, then do next layer welding. it shall ensure the height and length of welding seam.多層焊：如鋼筋直徑較大，需要進(jìn)行多層施焊時，應(yīng)分層間斷施焊，每焊一

25、層后，應(yīng)清渣再焊接下一層。應(yīng)保證焊縫的高度和長度。 4.2.5.6 fusion: welding process shall have sufficient penetration. main welding seam and location welding seam shall be combined with good, avoid the blowhole、 slag inclusion and burn defect, and to prevent cracks.熔合：焊接過程中應(yīng)有足夠的熔深。主焊縫與定位焊縫應(yīng)結(jié)合良好，避免氣孔、夾渣和燒傷缺陷，并防止產(chǎn)生裂縫。 4.2.5.7

26、flat welding: when flat welding, it shall pay attention to molten slag and hot metal mixed unclear phenomenon, to avoid molten slag flow to the molten iron front. molten pool also shall control into oval, generally use the rightward welding, welding rod with work surface at an angle of 70°.平焊：平

27、焊時要注意熔渣和鐵水混合不清的現(xiàn)象，防止熔渣流到鐵水前面。熔池也應(yīng)控制成橢圓形，一般采用右焊法，焊條與工作表面成70°。 4.2.5.8 vertical welding: when vertical welding, hot metal and slag separation. it shall avoid to prevent the molten pool temperature is too high, iron drop formation overlaps, operation rod and vertical surface forms a 60 ° 80 &

28、#176; c. make the arc slightly upward, blown into the molten pool center. welding the first, should press the arc to operation, at the same time as the smaller lateral swing, the remaining layers semicircular lateral sway and pick up welding arc method.立焊：立焊時，鐵水與熔渣易分離。要防止熔池溫度過高，鐵水下墜形成焊瘤，操作時焊條與垂直面形成6

29、0°80°角。使電弧略向上，吹向熔池中心。焊第一道時，應(yīng)壓住電弧向上運條，同時作較小的橫向擺動，其余各層半圓形橫向擺動加挑弧法向上焊接。 4.2.5.9 horizontal position welding: welding rod inclination of 70 ° 80 °, preventing molten iron by gravity to the factory on the sinker groove. when the mouth to uphill, it shall without arc travel quickly to

30、pause, downhill to the roots of the mouth with tiny transverse pulling arc action, followed by uniform welding.橫焊：焊條傾斜70°80°，防止鐵水受自重作用墜到廠坡口上。運條到上坡口處不作運弧停頓，迅速帶到下坡口根部作微小橫拉穩(wěn)弧動作，依次勻速進(jìn)行焊接。 4.2.5.10 overhead: when overhead, it shall use low current, the fusion place shall thin and keep combine w

31、ith base material perfectly. before and after the first layer of welding shall be pushed pulled action with short arc, and keep welding rod inclination of 80° 90 ° with welding direction . the remaining layers electrodes yaw, and a little pause in the elbow side arc stability and to ensure

32、 the both sides of fusion. 仰焊：仰焊時宜用小電流短弧焊接，溶地宜薄，里應(yīng)確保與母材熔合良好。第一層焊縫用短電弧作前后推拉動作，焊條與焊接方向成80° 90°角。其余各層焊條橫擺，并在坡口側(cè)略停頓穩(wěn)弧，保證兩側(cè)熔合。4.2.5.11 steel bar ligating bud welding鋼筋幫條焊：4.2.5.11.1 steel bar ligating bud welding is applied to 、grade steel bar. welding of double sides shall be used by steel bar

33、 ligating bud welding, and if not used welding of double sides, it can use welding of one side, but it shall ensure have enough spacing. steel car ligating bud welding shall adopt the steel bar that same grade and diameter to fabricate, the length of steel bar ligating bud see the following table. a

34、s for the steel bar ligating grade and the main steel bar is at the same time, the diameter of steel bar diameter shall smaller than main steel bar for one specification. as for the steel bar ligating diameter and the main steel bar is at the same time, the grade of steel bar ligating shall lower th

35、an the main bar.鋼筋幫條焊適用于、級鋼筋。鋼筋幫條焊宜采用雙面焊；不能進(jìn)行雙面焊時，也可采用單面焊，但必須保證有足夠的間隙。幫條宜采用與主筋同級別、同直徑的鋼筋制作，其幫條長度見下表。如幫條級別與主筋相同時，幫條的直徑可以比主筋直徑小一個規(guī)格。如幫條直徑與主筋相同時，幫條鋼筋可比主筋低一個級別。 4.2.5.11.2 the welding seam thickness (h) of steel bar ligating joint shall not less than 0.3d, and the width shall not less than 0.7d.鋼筋幫條接頭的焊

36、縫厚度h應(yīng)不小于0.3d，焊縫寬度b不小于0.7d.the length of steel bar ligating鋼筋幫條長度item項次grade 鋼筋級別specification of welding seam 焊縫型式steel bar ligating length幫條長度l1級welding of one side單面焊welding of double sides雙面焊8d4d2級welding of one side單面焊welding of double sides雙面焊10d5dnotice: d is the diameter of main steel bar.注:d

37、為主筋直徑。4.2.5.11.3 when steel bar ligating, the assembly and welding of steel bar shall meet following requirements:鋼筋幫條焊時，鋼筋的裝配和焊接應(yīng)符合下列要求：a. it shall remain 25mm between two main steel bar termination.兩主筋端頭之間，應(yīng)留25mm的間隙。b. it shall use 4 points positioning method to firm steel bar ligating and main st

38、eel bar, and the distance from location welding seam to steel bar ligating shall more than 20mm.幫條與主筋之間用四點定位固定，定位焊縫應(yīng)離幫條端部20mm以上。c. when welding, the arc strike shall start in steel bar ligating end, and finish shall in termination, and filling in arc strike. the first welding seam shall have suffici

39、ent penetration, main welding seam and weld positioning, especially in the beginning and terminal welding seam positioning, shall be good fusion.焊接時，引弧應(yīng)在幫條的一端開始，收弧應(yīng)在幫條鋼筋端頭上，弧坑應(yīng)填滿。第一層焊縫應(yīng)有足夠的熔深，主焊縫與定位焊縫，特別是在定位焊縫的始端與終端，應(yīng)熔合良好。4.2.5.12 steel bar overlap welding鋼筋搭接焊：4.2.5.12.1 steel bar overlap welding:

40、it apply for the i、ii、iii grade steel bar. when welding, it shall use welding of double sides. if the welding of double sides cannot use, it also adopt welding of one side. the overlap and steel bar ligating shall associate with same length; see the table 4-15. 鋼筋搭接焊：適用于、級鋼筋。焊接時，宜采用雙面焊。不能進(jìn)行雙面焊時，也可以采

41、用單面焊。搭接長度l應(yīng)與幫條長度相同，見表4-15。4.2.5.12.2the welding seam height of overlap joint shall not less than 0.3d, and the welding seam width shall not less than 0.7d.搭接接頭的焊縫高度h應(yīng)不小于0.3d,焊縫寬度b不小于0.7d。4.2.5.12.3when overlap welding, the assembly and welding of steel bar shall meet the following requirements:搭接焊時，

42、鋼筋的裝配和焊接應(yīng)符合下列要求：a. when overlap welding, the main steel shall pre-springing to ensure axis of two steel bars at the same axis. under the field fabrication member installation conditions, the overlap welding of steel bar shall in the panel point, and if there have problems in steel bar pre-springing,

43、 it shall appropriate pre-springing. 搭接焊時，鋼筋應(yīng)預(yù)彎，以保證兩鋼筋的軸線在一軸線上。在現(xiàn)場預(yù)制構(gòu)件安裝條件下，節(jié)點處鋼筋進(jìn)行搭接焊時，如鋼筋預(yù)彎確有困難，可適當(dāng)預(yù)彎。b. lap welding with two fixed positioning welds shall be away from the lap end 20mm or more.搭接焊時，用兩點固定，定位焊縫應(yīng)離搭接端部20mm以上。c. welding arc shall be at one end of the starter bars start closing arc sha

44、ll be in the lap of the head of the reinforcement end, shall fill the crater. the first layer of the weld shall have a sufficient depth of penetration, the main seam and positioning weld, especially in the positioning the weld starting end and the terminal shall be good fusion.焊接時，引弧應(yīng)在搭接鋼筋的一端開始，收弧應(yīng)在

45、搭接鋼筋端頭上，弧坑應(yīng)填滿。第一層焊縫應(yīng)有足夠的熔深，主焊縫與定位焊縫，特別是在定位焊縫的始端與終端，應(yīng)熔合良好。4.2.5.13 the embedded parts arc welding of t-joints: the embedded parts t-joint arc welding joint form paste fillet weld and perforation plug welding two points.預(yù)埋件t形接頭電弧焊：預(yù)埋件t形接頭電弧焊的接頭形式分貼角焊和穿孔塞焊兩種。when welding, it shall meet the following re

46、quirements:焊接時，應(yīng)符合下列要求：4.2.5.13.1 the steel plate thickness shall not less than0.6d, and not less than 6mm.鋼板厚度不小于0.6d,并不宜小于6mm。4.2.5.13.2 steel bar shall be used to grade , . by anchoring bar diameter not less than 8mm, the structure anchoring rebar diameter not less than 6mm. anchor bars within 6

47、25mm in diameter, can be affixed to the foot welding; anchor bars diameter of 20 32mm, the appropriate use perforated plug welding.鋼筋應(yīng)采用、級。受力錨固鋼筋直徑不宜小于8mm，構(gòu)造錨固鋼筋直徑不宜小于6mm。錨固鋼筋直徑在625mm以內(nèi)，可采用貼腳焊；錨固鋼筋直徑為2032mm時，宜采用穿孔塞焊。4.2.5.13.3 site installation conditions, each from floors in the same type of connec

48、tor 300 (with rebar level, the same type of connector, welding position) as a group, less than 300, still as a group.在現(xiàn)場安裝條件下，每一至二樓層中以300個同類型接頭（同鋼筋級別、同接頭型式、同焊接位置）作為一批，不足300個時，仍作為一批。 inspection method: inspect welding test-pieces and test report.檢驗方法：檢查焊接試件試驗報告單。4.3quality standard質(zhì)量標(biāo)準(zhǔn)：4.3.1 basis it

49、em: the operator shall examine individual joints after cleaning residue weldment appearance quality inspection results should meet the following requirements:基本項目：操作者應(yīng)在接頭清渣后逐個檢查焊件的外觀質(zhì)量，其檢查結(jié)果應(yīng)符合下列要求：4.3.1.1 welding surface is smooth, without a large depression, welding tumor.焊接表面平整，不得有較大的凹陷、焊瘤。4.3.1.

50、2it shall not have crack in joints.接頭處不得有裂紋。4.3.1.3 undercut depth, porosity, and the number and size of the slag, and connector size deviation, the following table shall not exceed the values specified.咬邊深度、氣孔、夾渣的數(shù)量和大小，以及接頭尺寸偏差，不得超過下表所規(guī)定的數(shù)值。the size deviation of steel bar electric arc joint and all

51、owance of defects鋼筋電弧接頭尺寸偏差及缺陷允許值（mm）item 項次project項目allowance deviation允許偏差inspection method檢驗方法1vertical offset of steel bar ligating along the joint centerline幫條沿接頭中心線的縱向偏移0.5dmeasuring tap尺量2joints bend t-joint steel bar spacing embedded parts接頭彎折預(yù)埋件t形接頭鋼筋間距4°不大于10measuring tap尺量3the axis o

52、ffset of steel bar in joints接頭處鋼筋軸線的偏移0.1d and not less than 30.1d且不大于3measuring tap尺量4welding seam undercut depth焊縫咬邊深度+0.05d0measuring tap尺量5welding seam width焊縫寬度0.1d0measuring tap尺量6welding seam length焊縫長度-0.5d7lateral undercut depth橫向咬邊深度0.5visual 目測8the number and size of weld porosity and sla

53、g in the long 2d weld surface embedded parts of the t-shaped connector porosity焊縫氣孔及夾渣的數(shù)量和大小在長2d的焊縫表面上預(yù)埋件t形接頭氣孔2 pieces、6mm² for 3, diameter not less than 1.52個、6mm²3個，直徑不大于1.5visual 目測notice: 注：1. d is the steel bar diameter.d為鋼筋直徑。2. negative temperature undercut depth not greater than 0

54、.2mm.負(fù)溫下，咬邊深度不大于0.2mm。visual inspection of the failed joint, trimmed or reinforcing submit secondary acceptance.外觀檢查不合格的接頭，經(jīng)修整或補(bǔ)強(qiáng)后可提交二次驗收。inspection method: visual observation or measurement.檢驗方法：目測或量測。4.4finished product protect成品保護(hù)： note banding has good protection of the steel skeleton, the impro

55、per step indiscriminate demolition, non-stick oil, construction, demolition of the chaos of the skeleton to be seriously repair the steel skeleton reinforced the correct position.注意對已綁扎好的鋼筋骨架的保護(hù)，不亂踩亂拆，不粘油污，在施工中拆亂的骨架要認(rèn)真修復(fù)，保證鋼筋骨架中各種鋼筋位置正確。4.5the quality problems shall pay attention to應(yīng)注意的質(zhì)量問題：4.5.1 ch

56、eck for the dimension, groove angle, steel bar termination gap, reinforced axis offset, and the surface quality of steel material, when not meet the requirements, it shall not be welded.檢查幫條尺寸、坡口角度、鋼筋端頭間隙、鋼筋軸線偏移，以及鋼材表面質(zhì)量情況，不符合要求時不得焊接。4.5.2 take the wiring shall be in good contact with the steel bar, and it must not indiscriminate to take, prevent arcing.搭接線應(yīng)與鋼筋接觸良好，不得隨意亂搭，防止打弧。4.5.3 joints with steel plate or steel bar ligating, arc strike shall carry out on stee