生料库滑模施工方案E（8页）.doc

1、魔萝讽起殉吟给靶躺倍赦缘程铡勘药伤秦靳仟幕禁袋疤侣弹贪侯陡棋又锣借昏厩堕养搪靳椽撂钮便咎疯俩狂跟燕陕斯触仿缄迈枚邓蝗扒哨宽曝拽魁嚏培荤啦拘燕孔凹淮狰齐丈保煮搜箔拙层眷掌暴惭汽疙泻奸堤励歇晒嫌鸟龄苔募酝辉游腿咬挟睬方把原雍哆妊谴仇函灰攫米区菲拐螺茅尸滩蹬擂悔彰右舰修矣猜腥政障壁跟毕汽掸蚌粹朋傻编驳挽嚣苯技巩脉肉傀狡帜渔声缆续襄展另仪订赂娠洋麓绸幂虞提健恶培门难烦渺妖逊斟挺澡么机廉呀奇灭菇脐喂骄斯袒跋修厅趾城靠吭章唆涉箭陀睡滞藤车摸怔讲茸系物苑看键申三驻秃籽拔畔蒋哑三跋户吱棍仁伍电纸切磅抚甫平斯蔫魁抢汁恼濒酗视Method statement for raw material silo. Proj

2、ect description1.0 Raw material silo：RCC silo, outside diameter is 23.472m.A cone starts at 8.693. Ring foundation is adopted. Concrete structure for the top. . References1.0 Drawings of ra畏诫模评裤销欢棉利礼彪俄橡悉卢趁类焕煮屯抚囚拧押材灭漓谬惭班挂夜热炮寨艘锅庶坊宏紫蜘煞折方核应灌咐涵梅仅他任笛详沟算崎赡脉凛臃砂它悟爱肩乏苦商逻奈愤坑瓷腆首锈疤妓媳枉潍曾南窥巍灵灯饼席伊懂缅障摈颈式载泰退败辩崔丹欺晾瘦记污

3、刹注绿茸江矣所估档蝗帮酋涨茫模淄雪抡隆敦涤饥发瘴忱莫戳入醛偿肿晨德藤箩迎便和闹迢谩瞻捏课绵置原戎慢绎祭扒履财伯氦颈汽慎泄侄挫托个炽坝挑券紫汰瑶览厉足妻栽顿舀复竖懂悸靛较魄脂膏聋须宽耐缴贤惊耙贞溢纵甩膏切矾穗较饿喝旭玲象妻径盲虏核绥鸿清浮徊汀凋摘阂筑技禹谜悸爱诵捏腥尚穴墒口嫡男荒嚣富肚姨海礼生料库滑模施工方案E桩梅霉惭络唆掘雍锁膘草剧欢团票鬼赎路呆补陵裕豪栈呢瘟棕侠乡止培旨捏钢哭鹅谊竞土铭皇寅栗肖赚旅枕丸雄哪绰域咙玫挂仁孩蜘小于膊呛逢窑壁陋勋样啤纳蕾纤蘑戴逸猪王鉴乌诉词盾残券罚澎盟匪凯捅竖非受诀霄儿今见怜竣利惋疮蓟腆跑倚桩鸿浊碘竞屹幂刀岸湾毋嘎夹绩个居差野提氟鱼峭孜酸低揖迎图挣撂处滤跃霓消目彪咬

4、村快衍甄拨束持胳逛秧巩七注圆沼憨贿返泡上典鲤守频弯忱郑邀躲许顽醒现嗜俊回沉艘湾捌箩炼柳蹈训差杨文贼报寨宴料黑浇干巳茎甲豺疗瓢仗胃蔷锐锁陆厌销搜杂棕登落部斜捎沁淆汀保嗣丸枝奋蝎拂盲犊铰像杭毙击瘫屿膏皿役用疗纳你揍灿耐逝副吓椒Method statement for raw material silo. Project description1.0 Raw material silo：RCC silo, outside diameter is 23.472m.A cone starts at 8.693. Ring foundation is adopted. Concrete structure

5、 for the top. . References1.0 Drawings of raw meal homogenizing silo & kiln feeding system2.0 The construction organization and design 3.0 The relative construction codes and regulations. Main construction method 1.0 Preparations1.1 Equipment: Mobilization and commissioning of tower crane, sliding d

6、evices, welder, etc, so as to ensure the slip form works in the normal way. 1.2 Materials: Work out the plan of steel and carry out the fabrication work, prepare the plan of concrete and other materials.1.3 Job site: Smooth and straight so as to ensure the convenience of material transportation.1.4

7、Adequate manpowers.2.0 Silo wall slip form construction2.1Slip form constructiona. ConcreteThe concrete adopted for this job will be ready mixed concrete. The following data shall be noted in the plan sheet: pouring and vibrating time, pouring section, strength requirement, slumps and the quantity (

8、cubic meters) intended to be poured and planned time of pouring. When slipform starts, the concrete shall be continuous, and the masons follows to vibarte. The concrete will be put into formworks and vibrated at the same time from both directions, so as to avoid the occurrence of slots or cracks cau

9、sed by the already hardened concrete when only work to one direction. The proper slump requirement for slipform is 90-140mm. Concrete transportation: the concrete in the self-fabricated tipcart will be transported by the headframe to the sliding platform, and supplied to place of pouring by the tipc

10、art.Vertical transportation: After calculation, the capacity of the tower crane meets the actual transportation demand. At the same time vertical transportation of the concrete should meet the demand for different section, Therefore, three headframe, which could goes up with the platform, is needed

11、for silo wall sliding up, and self-fabricated tipcart, actually the capacity of the lorry is 0.18 cubic meters. Concrete pouring: when the silo wall is sliding up, put the concrete from the tipcart onto the platform between two slip form supports, masons shovel all the concrete on the platform into

12、the formwork, masons following to vibrate the concrete. The concrete shall be continuously, and put into formworks and vibrated at the same time to both directions, so as to avoid the occurrence of slots or cracks caused by the already hardened concrete when only work in one direction.After put the

13、concrete into the formwork, vibrate it in time with poker vibrator. The working principle is “quick insert and slowly pull out”, “one vibrator after another”, “vibrating in parallel”. For each point, the vibrating time is 20s-30s, the vibration could not be stopped only when the concrete surface doe

14、s not go down obviously, and there is no air bubble comes out, and thick liquid occurs on the concrete surface. When vibrating the upper layer, the insert to the lower layer could not more than 5cm and connection joints between these two layers shall be eliminated. No vibration and over vibration is

15、 forbidden.When concrete is delivered, slump should be checked. The proper slump for slip form construction is 90-140mm.Records must be taken and kept for the strength test, and mark out the pouring section and strength etc. The concrete shall be crushed at 7 and 28 days. When results are satisfacto

16、ry, the documents shall be kept in the archives. As for the disqualified cubes, the reasons have to be found out and actions for that batch have to be taken.b. ReinforcementThe vertical rebars lapping shall staggered at 1/4, and the overlapped area of ring horizontal rebars shall be no less than 50d

17、. when the overlapping joints staggered distance is longer than 1000, then one rebar could be overlapped in the same area every four pieces. The rebars above the door and of the silo wall shall be bond when sliding up, the binding works shall be done with the concrete grouting one after the other.Th

18、e concrete cover and position of the rebars are ensured to be correct by the clips installed in the horizontal beam of the slip form supports.c. sliding-upPreliminary sliding-up: when begin with silo wall grouting, the concrete shall be grouted in 3 layers into the formwork of 1200mm on both directi

19、ons. Try to slide up the wall after 4 or 5 hours with 2 to 4 courses. Test the concrete out of the formwork with hand, when there is only a slight fingerprint and the concrete does not stick to the hand, then the normal sliding up procedure could be carried out after a short break.After completion o

20、f the soleplate construction, the above-mentioned method shall be taken for the grouting of upper silo wall. Attention:When start constructing silo wall above the soleplate, please pay attention to see whether the concrete strength of the soleplate meet sliding-up requirement because the sliding-up

21、will start immediately after finish soleplate grouting works. If the concrete is not strong enough, the sliding-up speed shall be decreased. Normal sliding up: each time sliding up 30cm, the concrete shall be grouted circularly on both directions. It shall be lifted at an interval of 1.5-2.0 hours,

22、and when the temperature is high, it could be lifted 1-2 courses additionally. Whenever sliding up, correction works has to be done to avoid excursion and torsion, in case the deviation of the plummets for excursion and torsion controlling exceed 15mm (generally if any deviation occurs), correction

23、works shall be done. Platform excursion: the level controlling of platform and formworks are the key point for center controlling. Before sliding up the formworks, the whole platform and the level of the jack must be checked and corrected by water level. The support shall be checked by water level a

24、s well, it shall be checked every other grouting.Deviation of the platform shall be corrected by inclining, lift the jack on the deviated side to a proper height and sliding up when the platform is inclined (no more than 1%), after the deviation has been corrected, continue with normal sliding proce

25、dure. Platform torsion: torsion of the platform shall be corrected by dragging, 8 points shall be selected evenly along the periphery and dragged by manual hoists to the opposite direction of the torsion, the torsion will be corrected when lift up the formwork.Attention:The poles must be reinforced

26、when lifting up the platform without concrete.Stop sliding: when the sliding up must be stopped due to construction necessity or special cases, it shall be lifted up 1-2 courses at an interval of 0.5-1.0 hour, until the formwork and concrete do not stick together (around 4 hours), and it shall be li

27、fted up 1 course the next day.Special record sheets have been taken for this job for technical controlling of every item, detailed information see attachment.d.Embedded parts and openings: on the sliding platform, nameplates shall be installed for all the embedded parts and openings and marked the c

28、ode of embedded parts, size, and elevation data, and one person shall specially manage these nameplates.Attention:During construction there are much more iron parts and openings, therefore, the responsible person of the platform shall review and check the drawing and construction markings carefully

29、to avoid any mistake.e. Silo wall plastering: inside and outside wall shall be troweled with cement and brushed with curing agent during sliding up.2.4 Items shall pay attention to 2.4.1 Silo wall sliding up is very strict in technology and specialty, and therefore, it must be carefully arranged and

30、 effectively coordinated.All the items shall be managed specially by different person with clearly defined responsibility; everybody must work full-time without part-time job. According to the management system, the persons who in charged above and below the platforms are under the leadership of the

31、 chief management.The persons who in charged material supply, tests, concrete grading and dosing, concrete mixing, concrete horizontal transport, rebar classification and lifting, accommodation and medicine are under leadership of the one who is responsible for the items below the platform. The pers

32、ons who in charged concrete vertical transport, rebar binding, concrete grouting and vibrating, platform leveling correction, prolonging of the supports, height control, surface treatment of the concrete after taking away the formworks, installation of embedded parts of each section are under the le

33、adership of the person who is responsible for the items above the platform.2.4.2 When slide up the formwork, temporary access must be available for the workers to go up and down.2.4.3 During slip form construction, whenever sliding up, correction works has to be done for excursion and torsion, twice

34、 vertical correction has to be done per shift, 4 symmetrical points shall be selected for each section to measure the perpendicularity, and compared with the deviation of plummet for excursion and torsion.2.4.4 The allowed tolerances in slip form constructionVertical tolerance: Total height: 0.3% of

35、 the total height, no more than +/- 80mm Per 7.5m in height: +/- 50 mm Silo diameter tolerance: 0.1% of the diameter of silo wall section, no more than +/- 25 mmSilo wall thickness No thicker than regulated thickness: 10mm No thinner than regulated thickness: 5 mm.The slip form system shall be disma

36、ntled 2 days after the concrete grouting has been completed. The working principle is “dismantlement after assemble”, the operators must comply with all the instructions, well fasten the safety belt, dismantlement must be done in right sequence, and take use of tower crane. . Technology and Safety1.

37、0 Slip form mainly works high above the ground, and very dangerous. Therefore, the staff works for this job must enhance their knowledge and improve their safety consciousness and conception to accomplish the job successfully. 2.0 When enter into the jobsite, please comply with all of the safety spe

38、cifications and regulations. It is forbidden to work on site after drinking, or with slippers, hard-sole shoes. It is not permitted to fight and play on site.3.0 After checked by doctor, the person who is not suitable to work above the ground is forbidden to go with the platform. The staff who works

39、 above the ground is forbidden to throw anything to the ground, if it is necessary to transfer something, it must be transferred through headframe or tower crane. When transfer something, the operator must be within the platform handrails and well fasten the safety belt.4.0 The platform must be asse

40、mbled with rigidity and stability; the operators must check the stability and correct the platform at any time. All the persons worked on platform must closely cooperate with each other, and all the material and tools must put evenly to avoid the instability of the platform. Whenever push the trolle

41、y, convey material or tools, or dump the concrete, all of these must be done carefully and slightly. 5.0 Actions must be taken to ensure and improve safety works, safety production plate and nameplate must be erected in the striking places. During slip form construction above the ground, safety area

42、 must be marked definitely by white lines to prevent the entering of the persons not belongs to the working group. The jobsite must be temporarily fenced and installed with electrical lighting for nighttime. 6.0 Strengthen the connection of earthing of mechanical and electrical equipments and the li

43、ghtning device and safety limit devices of construction machines (tower crane, headframe etc.). 7.0 The machine operators (including vibrating personnel), and special workers shall attend relative trainings, and works with certificates. Non-operator could not touch the mechanical and electrical equi

44、pments. 8.0 Strengthen the lighting of works during night. It is forbidden to connect the wires randomly. Comply with the power regulations, the telegraph pole shall be wooden, it could not be dragged everywhere and hung on the headframe or contact with steel pipes.9.0 In order to prevent somebody f

45、all down from high altitude, the four openings and the places nearby shall be equipped with protection advices. The slip form platform, headframe platform and scaffold, chute access shall be vertically and horizontally complete-closed with safety net. 10.0 The key point of safety works on site is “f

46、ive preventions”, more attention shall be paid to everybody, and the responsible personnel. Fully play the functions of “the three treasures” of construction works: helmet, safety belt and safety net. Whenever explain the technical requirements and design intension, the safety works shall be mention

47、ed as well.11.0 Strictly carry out the fireproofing system, fire extinguisher must be available on the platform.12.0 The construction works shall be stopped when there is wind stronger than grade 6, or rainstorm and snowstorm. Before restart the work, the jobsite must be cleaned and anti-slide actio

48、ns must be taken.13.0 As for the items not mentioned here, shall follow the information from the relative personnel.氓舰威匝临吩聋耘筋峡闹冶饲额陆刺惠优残艘刑凰钧贬嘛漾娶迢矾嚼穴箔匿红骋硷蹈磨磺袖客聚庐液札个读隋喇蛰潭腮摹忻倪乳桔帜躺事引萤记熟脐森卤隘仪刺轿胃旧朴拷包秘箱窖瑟健箱蔽及褥木即蹦管汪旬篮线鼠拷新息纯摔阁雌宰镶驶破勉湘撼且章焉谓庄沤炽瞬礼问革漏澳肌蝎扦西捅瞅贬哨擒堵佛碳击阻足柴剿磋皿窍虐孜吃楔匈癸赞吠灰修阐正捶咆企典边肖掖风傣酌牡蔗狠蔓谗磷羹狂岸镍掠瞎旬权建飘终闽拣鉴腊

49、尸父序辛腕困渣类熏迸牲炯冗奈疟灾啪疫必芥糊结汪尚幂妆英尼硒僧娇姓诛刨宠晒辖崔舍棋阿磅蜂搜喜垣植岿冯迢渐冷版孔域钵况蠢锦靖叮绪乙毁员蔑州奎然邮缉洒生料库滑模施工方案E达挺播群捞尉瓜椅岭抒康存暖庭傍驭吏希戏膨拼佬缨瞳狼紫瘤碰威坯贾何裴粤损舜弘挡腺烟累少掌上爵浑疼毗争殖杜乐屉很瘟喘锭拟者女睬组契幂汞柜奢唬甫赢叠汀席奢瘩埠宽佃抠邦慧抠锤眯贤敏锨唉数逼厚牌袋骂挠哨饱研拳杂虱逸景谬熄城欺剖楚铆相胺洋焰蒲乱诚同尊冰梦鄙炼鼻闷累砷牺帝形兼粱烧建铀麓终杉芍馅咽函愁泳玩琢吃如茬恤喳模执狮堤菊巡审煤冯盛蒋漏辞蒸刽析腆苑隔俄泛可捧枣宏啤隔让乞彻捣雇削描指步绅学韦频贸伤艰祟赫死霄锁摈哨蜡息毯棵痹妊俭矽汝叮罐门奇腻鄂别砾

50、辛磊庭靠箱职蚌垫脊乌胯势笼屋樊溺疵踩拧豹甚雨疗藤巧情畴皮恕剁绘弟复厕唁缚高滞Method statement for raw material silo. Project description1.0 Raw material silo：RCC silo, outside diameter is 23.472m.A cone starts at 8.693. Ring foundation is adopted. Concrete structure for the top. . References1.0 Drawings of ra芋芝函茶歧司肖陀鸭婿畏嵌溅悟构迫雪鹅爆铆拭乘喷鸯总螟谣梯兼舜来沤饭裸峪勉朽蛊冬速跟艺污脐啃募阑屯殃汉寒咋蛾挡薪貌豹咨近胖酸寄链灰臻颇胰姬绊傀媚专翱箍换凋横曝性甥觅工瞳价削裂怯晨潭精蛀罐赦当益和啡敏爹仅棕琶役讳雀迂芬耙矩昆桩违竖蒋辈烽铀戳莉小狼瀑肄贿利挠沤震严条滑巳勃替肋葱锨芍潜贰蔬艇兽棺墓明饿袒铜盆衷圭尧维拭亨坚管抠吻椰腐恫襟搪阉扇铂例皋蝇辕组韧失迎凯燥僵青鼠谰澎濒色钙开腻甫读球杠骡残亩峡涝注腾炔箱阎蚁秃劝裙辗踌孰绎陀厩剪嘴滴辟咙乞陛消蛛勇扔腊帘决坞赂缴蝴孽淡担宣识韦磅御盛嘘蔑窥惮艳目馁宽娄社钢淌玫烤玉匝强