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1、Method statement for raw materialsilo. 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 raw meal homogenizing silo kiln feeding system2.0 The construction organ2、ization and design 3。0 The relative construction codes and regulations. Main construction method 1。0Preparations1。1Equipment: Mobilization and commissioning of tower crane, sliding devices, welder, etc, so as to ensure the slip form works in the normal way. 1.2Materials: Work out the plan of steel a3、nd carry out the fabrication work， prepare the plan of concrete and other materials。1.3Jobsite： Smooth and straight so as to ensure the convenience of material transportation。1.4Adequate manpowers.2.0Silo wall slip form construction2。1Slip form constructiona。ConcreteThe concrete adopted for this job4、 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 (cubic meters） intended to be poured and planned time of pouring。 When slipform starts， the concrete shall be continuous， and 5、the masonsfollows 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 caused by the already hardened concrete when only work to one direction. The proper slump requirement for slipform is 90-140mm. Co6、ncrete 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 tipcart。Vertical transportation:After calculation, the capacity of the tower crane meets the actual transportation demand。 At the s7、ame time vertical transportation of the concrete should meet the demand for different section，Therefore, threeheadframe， which could goes up with the platform， is needed for silo wall sliding up, and self-fabricated tipcart， actually the capacity of the lorry is 0.18 cubic meters. Concrete pouring: 8、when the silo wall is sliding up, put the concrete from the tipcartonto the platform between two slip form supports， masons shovel all the concrete on the platform into the formwork， masonsfollowing to vibrate the concrete. The concrete shall be continuously, and put into formworks and vibrated at t9、he 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 concrete into the formwork, vibrate it in time with poker vibrator. The working principle is “quick insert and slowly pull out”, “on10、e 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 does not go down obviously， and there is no air bubble comes out, and thick liquid occurs on the concrete surface. When vibrating the up11、per 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 forbidden。When concrete is delivered， slump should be checked. The proper slump for slip form construction is 90140mm。Records must b12、e 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 aresatisfactory, the documents shall be kept in the archives. As for the disqualified cubes， the reasons have to be found out and actions for that ba13、tch 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. when the overlapping joints staggered distance is longer than 1000, then one rebar could be overlapped in the same area every four piec14、es. 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.The concrete cover and position of the rebars are ensured to be correct by the clips installed in the horizontal beam of the slip form supp15、orts.c.slidingupPreliminary sliding-up: when begin with silo wall grouting, the concrete shall be grouted in 3 layers into the formwork of 1200mm on both directions. 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 a16、 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 of the soleplate construction， the abovementioned method shall be taken for the grouting of upper silo wall. Attention:When start constructi17、ng 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 will start immediately after finish soleplate grouting works. If the concrete is not strong enough, the slidingup speed shall be decreased。 18、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 1.52。0 hours， and when the temperature is high， it could be lifted 12 courses additionally.Whenever sliding up， correction works has to be done to avoid exc19、ursion and torsion， in case the deviation of the plummets for excursion and torsion controlling exceed 15mm （generally if any deviation occurs）， correction works shall be done. Platform excursion: the level controlling of platform and formworks are the key point for center controlling。 Before slidin20、g 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 as well, it shall be checked every other grouting.Deviation of the platform shall be corrected by inclining， lift the jack on the deviated side t21、o 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 procedure. Platform torsion： torsion of the platform shall be corrected by dragging, 8 points shall be selected evenly along the periphery and dragged22、 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 when lifting up the platform without concrete.Stop sliding: when the sliding up must be stopped due to construction necessity or special cases， i23、t shall be lifted up 12 courses at an interval of 0.51。0 hour, until the formwork and concrete do not stick together (around 4 hours）, and it shall be lifted up 1 course the next day。Special record sheets have been taken for this job for technical controlling of every item, detailed information see 24、attachment.d.Embedded parts and openings： on the sliding platform, nameplates shall be installed for all the embedded parts and openings and marked the code of embedded parts， size, and elevation data， and one person shall specially manage these nameplates。Attention:During construction there are muc25、h more iron parts and openings， therefore， the responsible person of the platform shall review and check the drawing and construction markings carefully 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.26、2.4Items shall pay attention to 2.4。1Silo wall sliding up is very strict in technology and specialty, and therefore, it must be carefully arranged and effectively coordinated。All the items shall be managed specially by different person with clearly defined responsibility; everybody must work full-ti27、me 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 chief management.The persons who in charged material supply, tests， concrete grading and dosing, concrete mixing， concrete horizontal transport, reba28、r classification and lifting， accommodation and medicine are under leadership of the one who is responsible for the items below the platform。 The persons who in charged concrete vertical transport, rebar binding, concrete grouting and vibrating, platform leveling correction, prolonging of the suppor29、ts, height control, surface treatment of the concrete after taking away the formworks, installation of embedded parts of each section are under the leadership of the person who is responsible for the items above the platform.2。4.2When slide up the formwork， temporary access must be available for the30、 workers to go up and down。During slip form construction, whenever sliding up, correction works has to be done for excursion and torsion, twice vertical correction has to be done per shift, 4 symmetrical points shall be selected for each section to measure the perpendicularity， and compared with the31、 deviation of plummet for excursion and torsion.2.4。4The allowed tolerances in slip form constructionVertical tolerance:Total height: 0.3% of the total height， no more than +/- 80mmPer 7.5m in height： +/ 50 mmSilo diameter tolerance: 0。1 of the diameter of silo wall section， no more than +/ 25 mmSil32、o wall thickness No thicker than regulated thickness： 10mmNo thinner than regulated thickness: 5 mm.The slip form system shall be dismantled 2 days after the concrete grouting has been completed. The working principleis “dismantlement after assemble”, the operators must comply with all the instructi33、ons， well fasten the safety belt, dismantlement must be done in right sequence， and take use of tower crane。 。 Technology and Safety1。0Slip 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 consc34、iousness and conception to accomplish the job successfully。 2.0 When enter into the jobsite， please comply with all of the safety specifications and regulations。 It is forbidden to work on site after drinking， or with slippers， hardsole shoes。 It is not permitted to fight and play on site。3.0 After 35、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 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 36、transfer something, the operator must be within the platform handrails and well fasten the safety belt。4.0 The platform must be assembled 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 cooperat37、e with each other， and all the material and tools must put evenly to avoid the instability of the platform。 Whenever push the trolley， 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， safet38、y production plate and nameplate must be erected in the striking places. During slip form construction above the ground， safety area 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 39、with electrical lighting for nighttime。 6。0 Strengthen the connection of earthing of mechanical and electrical equipments and the lightning device and safety limit devices of construction machines （tower crane, headframe etc.)。 7.0 The machine operators (including vibrating personnel)， and special w40、orkers shall attend relative trainings， and works with certificates. Non-operator could not touch the mechanical and electrical equipments。 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 be41、 wooden, it could not be dragged everywhere and hung on the headframe or contact with steel pipes.9。0 In order to prevent somebody fall 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,42、 chute access shall be vertically and horizontally completeclosed with safety net。 10.0 The key point of safety works on site is “five preventions”， more attention shall be paid to everybody， and the responsible personnel。 Fully play the functions of “the three treasures” of construction works： helm43、et, safety belt and safety net. Whenever explain the technical requirements and design intension， the safety works shall be mentioned 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 i44、s wind stronger than grade 6, or rainstorm and snowstorm。 Before restart the work, the jobsite must be cleaned and antislide actions must be taken。13.0 As for the items not mentionedhere， shall follow the information from the relative personnel.下面為附送畢業(yè)論文致謝詞范文！不需要的可以編輯刪除!謝謝!畢業(yè)論文致謝詞我的畢業(yè)論文是在韋xx老師的精心指導和45、大力支持下完成的，他淵博的知識開闊的視野給了我深深的啟迪，論文凝聚著他的血汗，他以嚴謹?shù)闹螌W態(tài)度和敬業(yè)精神深深的感染了我對我的工作學習產(chǎn)生了深淵的影響，在此我向他表示衷心的謝意這三年來感謝廣西工業(yè)職業(yè)技術(shù)學院汽車工程系的老師對我專業(yè)思維及專業(yè)技能的培養(yǎng)，他們在學業(yè)上的心細指導為我工作和繼續(xù)學習打下了良好的基礎(chǔ),在這里我要像諸位老師深深的鞠上一躬！特別是我的班主任吳廷川老師，雖然他不是我的專業(yè)老師,但是在這三年來，在思想以及生活上給予我鼓舞與關(guān)懷讓我走出了很多失落的時候,“明師之恩，誠為過于天地,重于父母”，對吳老師的感激之情我無法用語言來表達，在此向吳老師致以最崇高的敬意和最真誠的謝意！感謝這46、三年來我的朋友以及汽修0932班的四十多位同學對我的學習，生活和工作的支持和關(guān)心.三年來我們真心相待,和睦共處，不是兄弟勝是兄弟！正是一路上有你們我的求學生涯才不會感到孤獨,馬上就要各奔前程了，希望（,請保留此標記。)你們有好的前途，失敗不要灰心,你的背后還有汽修0932班這個大家庭！最后我要感謝我的父母,你們生我養(yǎng)我,縱有三世也無法回報你們，要離開你們出去工作了，我在心里默默的祝福你們平安健康,我不會讓你們失望的，會好好工作回報社會的。致謝詞2在本次論文設(shè)計過程中，感謝我的學校,給了我學習的機會,在學習中，老師從選題指導、論文框架到細節(jié)修改，都給予了細致的指導,提出了很多寶貴的意見與建議,老47、師以其嚴謹求實的治學態(tài)度、高度的敬業(yè)精神、兢兢業(yè)業(yè)、孜孜以求的工作作風和大膽創(chuàng)新的進取精神對我產(chǎn)生重要影響.他淵博的知識、開闊的視野和敏銳的思維給了我深深的啟迪。這篇論文是在老師的精心指導和大力支持下才完成的感謝所有授我以業(yè)的老師，沒有這些年知識的積淀，我沒有這么大的動力和信心完成這篇論文.感恩之余，誠懇地請各位老師對我的論文多加批評指正，使我及時完善論文的不足之處.謹以此致謝最后，我要向百忙之中抽時間對本文進行審閱的各位老師表示衷心的感謝。開學自我介紹范文：首先,我想說“榮幸”，因為茫茫人海由不相識到相識實在是人生一大幸事，更希望能在三年的學習生活中能夠與大家成為好同學，好朋友。其次我要說“幸運”，因為在短暫的私下接觸我感覺我們班的同學都很優(yōu)秀,值得我學習的地方很多，我相信我們班一定將是團結(jié)、向上、努力請保留此標記。）的班集體。最后我要說“加油”衷心地祝愿我們班的同學也包括我在內(nèi)通過三年的努力學習最后都能夠考入我們自己理想中的大學，為老師爭光、為家長爭光,更是為了我們自己未來美好生活和個人價值，加油.哦，對了，我的名字叫“*，希望大家能記住我,因為被別人記住是一件幸福的事！）查看更多與本文高中生開學自我介紹相關(guān)的文章。