《专业英语》课件Unit-31.pptx

1、TextAs a high-rise building structural system in a very important part of one large volume concrete construction has been the entire construction process is the most important key,therefore,to ensure that the work of mass concrete high-rise building construction quality,the need for mass concrete hi

2、gh-rise building construction technology research.Given this,this paper introduces mass concrete high-rise building construction characteristics and requirements,and focus on the mass concrete construction technology and other related content.A high-rise building structure analysis of the characteri

3、stics of mass concrete.Compared with ordinary concrete structure,mass concrete with the following aspects of the characteristics:First,the relatively large size and relatively thick block.Second is required for continuous pouring of concrete structures is relatively large,and its structural integrit

4、y for requirements are relatively high,compared with ordinary concrete,the massive concrete hydration heat will lead to higher internal temperature of the concrete.Third,if the concrete is thicker than 1.5m,you must set the horizontal layered construction to be considered in order to better reduce t

5、he heat of hydration of mass concrete structure on the adverse effects.TextFour terms of the structure for the high-rise building its massive concrete structures are usually buried underground,mainly for infrastructure,and thus its ambient temperature changes suffered a relatively small impact,but i

6、n terms of performance for the impermeability requirements are relatively high,so high-level architecture mass concrete construction process,we must focus on the impact of heat of hydration considered and concrete structures from water and other issues related to the analysis of two high-rise buildi

7、ng structure mass concrete construction requirements analysis for high-rise buildings.A high-rise building structure analysis of the requirements of mass concrete.Its base form is usually inseparable from the large volume concrete floor or cap,so large concrete structures for high-rise buildings in

8、terms of great significance.conduct high-rise building of the actual construction process,as a result of large concrete structures taken during the processing of the processing methods vary,and therefore often need to fully consider all possible scenarios and problems for large volume concrete,count

9、ries also varied requirements,our country in terms of concrete high-rise buildings,as specified in the relevant industry standard big concrete between theTextinterior and the surface temperature difference,and an external surface with no temperature difference between the environment can be more tha

10、n 25 .High-rise building mass concrete construction technology analysis(1)Material control technologyA material control technology for mass concrete high-rise building material control technology.Which should primarily attention to the following aspects:First,to ensure the quality of materials,and s

11、econd,pay attention to control the temperature of concrete for mass concrete in terms of quality of materials,pre-construction must first effective mixing of concrete,in order to ensure that the different intensity construction can meet their requirements for the column,it should be possible to redu

12、ce the cement concrete,the amount of gray water,while increasing the amount of stone,fly ash and the admixture with the ratio to be adjusted to better control the concrete strength of concrete temperature control run,we should pay attention to the watering process for gravel medicine to ensure appro

13、priate temperature,while ensuring good ventilation,so be realized effectively avoid cracks in concrete situations.Text(2)Pouring technique technologyPouring concrete pouring technique technology has always been essential to the process of construction works is one of the key links,for concrete pouri

14、ng technology,its important to note the type and pouring pouring cubic capacity and other issues.Conduct casting The process must strictly abide by pouring sequence,according to the core tube walls,columns,beams,plates were pouring concrete for construction for wall placement should be maintained to

15、 ensure its thickness 5cm,45cm and height remained at best,for pouring interval should try to keep it within the 2h for column pouring process should be carried out in terms of steel wire mesh settings.carry beams and slabs of concrete pouring should pay attention to take the same slope,until after

16、the Second raft solidification times pouring,pouring part to ensure the quality.(3)Temperature measurement techniques Temperature measurement techniques concrete temperature measurement technique is to ensure that the quality of mass concrete is one of the important techniques,to control the tempera

17、ture of the concrete floor can effectively prevent cracks in concrete temperature measurement process must have its temperature for each soil layer measurements and their temperature characteristics were analyzed.the temperature transmitter,usually the resistance therm-Text-ometer is used for temper

18、ature measurement and temperature measurement points should pay attention to the line step by step,first the position of the selection be,and make the mark compiled and positioning,and then the temperature measurements.Additionally,you should ensure that temperature line between reasonable contacts

19、with reinforced to ensure the accuracy of the measurement process,to prevent the internal temperature of the concrete stress appears.(4)Maintenance Technology Maintenance technology until after the end of mass concrete construction,but also its maintenance.Concrete curing the main purpose is to achi

20、eve effective control of the temperature of concrete to reduce its temperature difference between inside and outside,and meet the resistance of concrete aspects of the relevant requirements.Carry out concrete pouring plastic sheeting covering should be carried out,and in the plastic sheeting on the

21、basis of cold felt covering,insulation moisture to do the work,to avoid the concrete surface due to dehydration caused by cracks.Also,note that setting insulation layers to achieve the concrete to reduce the internal temperature.TextConclusionConclusion For the four mass concrete high-rise building

22、construction,it must first control the quality of raw materials,but also through scientific construction techniques to concrete pouring temperature for effective control,in addition,attention should be further strengthen the conservation of mass concrete work,so be sure mass concrete high-rise build

23、ing construction quality,ensure the overall high-rise building construction quality and efficiency.hydrationn.水合作用infrastructuren.基础设施，公共设施ambientadj.周围的，外界的impermeabilityn.不渗透性sequencen.序列，顺序thermometer n.温度计，体温计New Words and PhrasesNotes（1）Given this,this paper introduces mass concrete high-rise b

24、uilding construction characteristics and requirements,and focus on the mass concrete construction technology and other related content.鉴于此，本文介绍了高层建筑中大体积混凝土施工的特点和要求，并重点探讨了大体积混凝土的施工技术等相关内容。（2）So high-level architecture mass concrete construction process,we must focus on the impact of heat of hydration

25、 considered and concrete structures from water and other issues related to the analysis of two high-rise building structure mass concrete construction requirements analysis for high-rise buildings.因此，进行高层建筑大体积混凝土的施工过程中，必须重点考虑进行水化热的影响以及混凝土结构自防水等相关问题的分析。（3）Big concrete between the interior and the sur

26、face temperature difference,and an external surface with no temperature difference between the environment can be more than 25.大体积混凝土其内部与表面之间的温度差，以及外表面同环境之间的温度差都不可以超过25。Notes（4）Temperature measurement techniques concrete temperature measurement technique is to ensure that the quality of mass concret

27、e is one of the important techniques,to control the temperature of the concrete floor can effectively prevent cracks in concrete temperature measurement process must have its temperature for each soil layer measurements and their temperature characteristics were analyzed.混凝土的温测技术是确保大体积混凝土质量的重要技术之一，对

28、混凝土的温度进行控制可以有效防止底板产生裂缝。混凝土温测过程中必须对其各土层的温度都进行测量，并就其温度特性分别进行分析。（5）In addition,attention should be further strengthen the conservation of mass concrete work,so be sure mass concrete high-rise building construction quality,ensure the overall high-rise building construction quality and efficiency.除此之外，还应

29、注意进一步加强大体积混凝土的养护工作，这样方可确保高层建筑中大体积混凝土的施工质量，确保高层建筑的整体施工质量和效益。1.By drawing construction with steel banding completed after pouring good protection measures(stamped cover to prevent the damage and corrosion of reinforced poured with concrete reinforced before the inspection and rust treatment after cast

30、ing.2.According to the requirements of the design drawings,after pouring with concrete micro-expansion concrete,the intensity ratio of the components of concrete strength increased by a label,water conservation,not less than 14 days after completion pouring.3.Poured with concrete using micro-bulking

31、 agents and admixtures should be determined by experiments incorporation,by the laboratory than the report issued by the concrete mix.4.Symmetric pouring concrete pouring control with both sides of the concrete poured in after pouring the process should take,with the template will not shift after po

32、uring guarantee,after pouring belt before pouring concrete pouring belt in debris clean up,both sides of the concrete loose stones chiseled surface clean,keep it moist and grout brush.5.After pouring belt before pouring,pouring personnel should the security technology correspondent,to understand the

33、 safety precautions in the construction.Exercises（Translate the following Chinese into English,or English into Chinese）6.高层建筑的施工技术水平随着工程建设发展而不断的提高，尤其是近几年有了突破性的进展。7.在各类高层公共建筑方面，钢筋混凝土框筒、框剪、筒中筒等结构体系已经广泛投入使用。8.随着大批新技术、新材料、新设备的普及和推广，高层建筑施工技术将会得到更快、更好的发展。9.高层建筑是指10层以上住宅和总高度超过24m的公共建筑和综合性建筑。10.剪力墙结构使用于居住建筑和旅馆建筑。Exercises（Translate the following Chinese into English,or English into Chinese）