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浇筑温度     
相关语句
  placing temperature
     ③ lowering the placing temperature of concrete;
     ③降低混凝土的浇筑温度 ;
短句来源
     The method is used to reflect exactly the influence of changement of everyday's air temperature,hydraution heat and placing temperature to the maximum temperature.
     该解能够比较精确地反映气温日变化、混凝土水化热和浇筑温度对混凝土最高温度的影响,从而为最大温差的确定和温度控制方案的选择提供了可靠的依据.
短句来源
     if the No. 425 cement were replaced by the No. 525 cement during mixing the concrete of TGP spillway dam section, the allowable placing temperature should be lowered by 4℃~7℃.
     如果拌制三峡工程泄洪坝段的混凝土用525号中热水泥取代425号低热水泥,其允许浇筑温度应约低4℃~7℃。
短句来源
     The paper studies the temperature control and crack prevention of pier concrete and points out the following main factors that affect the temperature and cracks of concrete performance,sudden drop of temperature,size of pier,placing thickness,placing temperature,time of interval,protective measures for concrete surface after dismantling templates and way of cooling.
     对闸墩混凝土的温控和防裂进行了研究,指出闸墩混凝土温度裂缝影响因素主要有混凝土材料性能、气温骤降、闸墩尺寸、浇筑层厚度、浇筑温度、间歇时间、拆模后混凝土表面保护措施、浇筑仓面保护方式、通水冷却方式等。
短句来源
     In the construction of the third stage works of Three Gorges Project,in order to effectively control internal temperature rise of mass concrete,measures are taken to pre-cool concrete placement,control mixer outlet temperature and placing temperature,as well as pre-cool,mid-cool and post cool internal concrete manually by running water in high temperature season.
     三峡右岸三期工程施工中,为了有效控制坝体大体积混凝土内部温升,采取了高温季节使用预冷混凝土浇筑、控制混凝土出机口温度及浇筑温度、对混凝土内部人工通水进行初冷、中冷和后冷等措施。
短句来源
更多       
  placement temperature
     The maximum temperature field of the 12th section of Longtan RCC gravity dam during construction period is given by use of the analytical solution provided by us On the basis of the stable temperature field and the allowable maximum temperature,the allowable placement temperature is determined and the available schedules are presented
     本文应用作者提出的模拟碾压混凝土坝成层浇筑过程一维温度场的解析解,对龙滩碾压混凝土坝12#挡水坝段四种不同的浇筑方案施工期最高温度场进行研究,给出了最高温度的温度变化时程曲线,计算了稳定温度场,根据容许温度和稳定温度确定浇筑温度,并提出了可供选择的温控方案
短句来源
     But, concrete placement temperature, surrounding temperature and the heat of hydration of cement, they take a more affection on lining thermal stress.
     混凝土的浇筑温度、环境温度以及水泥水化热对温度应力的影响十分显著。
短句来源
     This paper take the concrete communication tunnel of LAXIWA Hydropower Station in upper YELLOW RIVER as example, worked out the temperature field in concrete lining section under different construction seasons, different lining length, different concrete placement temperature, different surrounding rock elastic module, and the heat of hydration of cement, and also worked out elastic creeping thermal stress.
     本文以黄河上游拉西瓦水电站左岸混凝土进料线交通洞为例,综合考虑了不同施工季节、不同衬砌分段长度、不同混凝土浇筑温度、不同围岩弹型模量、混凝土的水化热等情况下,隧洞衬砌截面内的温度场,以及考虑徐变的混凝土的温度应力。
短句来源
     If the placement temperature in summer is decreased, the maximal temperature and extreme tension stress in the dam body could be obviously reduced.
     如果降低夏季的浇筑温度 ,可明显地降低混凝土的最高温升和拉应力 ;
短句来源
     In order to prevent the bottom slab and the piers from cracking, according to design requirement, and provisions of relevant specifications, some measures were adopted such as reasonably arranging the construction procedures and schedule, reducing the concrete placement temperature, to ensure the quality of concrete construction.
     为了防止闸底板和闸墩出现裂缝,施工时采取了严格按设计和规范要求组织施工、合理安排施工程序和进度、降低混凝土浇筑温度等措施,保证了混凝土的施工质量。
短句来源
更多       
  pouring temperature
     This paper, through the comparison of A scheme and B scheme, mainly studies the effect of different pouring temperature on temperature field and temperature stress field of Baise roller compacted concrete (RCC) gravity dam during construction and operation.
     本论文主要目的是通过对A、B两种施工方案,研究不同浇筑温度对百色碾压混凝土重力坝施工期及运行期温度场和温度应力场的影响。
短句来源
     The measures and equipments for temperature control in pouring concrete for Three Gorges Project Ⅱ stage construction are introduced and various factors affecting the pouring temperature are analysed in the paper.
     介绍了三峡二期工程砼温度控制措施及设备 ,分析了影响砼浇筑温度的各种因素。
短句来源
     Two valid measures of controlling the temperature of blocks are reducing the heat of hydration and lowering the pouring temperature of concrete.
     控制坝块温度的有效措施是减少浇筑层的水化热温升和降低混凝土浇筑温度
短句来源
     By optimization of the concrete mix proportion,the lowering of concrete pouring temperature,proper storehouse arrangement and striking time as well as crack treatment measures,the concrete pouring quality was controlled.
     项目通过优化混凝土配合比、降低混凝土浇筑温度、混凝土表面保护、合理安排仓位和安排拆模时间及出现裂缝的处理措施等几方面入手,对混凝土质量进行控制。
短句来源
     Combined with project survey,it analyzes some problems should be solved in the post-poured strip construction process from the aspects of data acquisition,dry shrinkage of concrete,pouring temperature of in order to meet the purpose of reducing building adopting post-poured strip dehiscence.
     结合工程概况,从数据采集、混凝土干缩、后浇带的浇筑温度、养护及构造要求多方面分析了后浇带在施工过程中必须解决的一些问题,以达到减少采用后浇带后建筑开裂的目的。
短句来源
更多       
  construction temperature
     Emulation research on concrete construction temperature based on SIMULINK
     基于SIMULINK的混凝土浇筑温度仿真研究
短句来源
     In order to solving state variable of WPCME(work procedure chief matter elements) under cooperation of WPR(work procedure resource), the coincidence impact between resource amount and showing form of WPCME function, are researched. The paper utilizes SD(System Dynamics) theory and simulant tool of control systemSIMULINK, to analyse and solve the system problems in engineering construction, and to carry out emulation research on concrete construction temperature.
     解决工序资源协作状态下工序主元状态变化率 ,研究资源量间的耦合作用和主元状态变化率函数的表现形式 ,利用系统控制的模拟和仿真是一种有效方法 ,引入系统动态仿真工具SIMULINK分析解决工程施工中系统控制问题 ,对混凝土浇筑温度进行仿真模拟研究
短句来源

 

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      placing temperature
    By placing temperature loggers at the top and bottom of nests laid on Kefalonia during 1998, we examined whether this asynchronous emergence was related to the thermal conditions within nests.
          
    The initial maximum placing temperature of concrete is usually limited by specifications, which might result in the concrete supplier having to implement cooling measures in hot climates.
          
    Such tears can be spotted by strategically placing temperature sensing devices on the mold.
          
      placement temperature
    Additional measures could include reducing the RCC placement temperature and mandating place ment schedules to avoid hot seasons.
          
    This is especially apparent with temperatures increases greater than 30 o C above placement temperature.
          
    The data from Figure 10 demonstrate the benefits of controlling the fresh concrete placement temperature in terms of controlling heat of hydration.
          
    The placement temperature of concrete should be determined according to ASTM C 1064.
          
      pouring temperature
    The results indicate that with decreasing of the barrel temperature of the mixer and the pouring temperature of molten Mg alloy, the solid fraction of semi-solid slurry increases and the size of non-dendritic grains becomes smaller.
          
    For elastomer modification, the homogenization and sample pouring temperature and the corresponding change in microstructure, as revealed by fluorescence microscopy, have a large impact on the rheological measurements.
          
    Effect of pouring temperature and heat treatment temperature on the properties of castings in Kh23N28M3D3T steel
          
    Velocity of the punch, pre-heat temperature of the preforms and pouring temperature were controlled during the infiltration of molten 6061 alloy into alumina short fibre preforms.
          
    Three casting process parameters, which might be thought to be closely related to the determination of mechanical properties of high-silicon cast irons, such as melting temperature, mischmetal addition, and pouring temperature were chosen.
          
    更多          
      construction temperature
    Therefore, the latest version of the program Transmove does not require a user to input a construction temperature or a temperature range.
          
    The original version of the program Transmove required the user to input the construction temperature and the temperature range for the bridge.
          


    The scour prevention chain rack wall of the new spillway of the Gangnan Reservoir is deeply buried in the soft soil with sandwich rock base and is an important engineering measure for prevention scouring of the force resis- tance bady. The deformation and temperature control index of concrete pouring are determined by the finite element tech- nique in design. The box intermittence excavation and the stable balance arch have been practised in construction. The ex- plosion and shockabeorbing measures of section...

    The scour prevention chain rack wall of the new spillway of the Gangnan Reservoir is deeply buried in the soft soil with sandwich rock base and is an important engineering measure for prevention scouring of the force resis- tance bady. The deformation and temperature control index of concrete pouring are determined by the finite element tech- nique in design. The box intermittence excavation and the stable balance arch have been practised in construction. The ex- plosion and shockabeorbing measures of section micro-deference axplosion, terrace excavation and flexible padding are al- so adopted and the non-supporting and safaty excavation are carried out in construction. The monitoring results have proved that the explosion in construction has not harmful effect to the adjacent new poured concrete and the concrete construction quality is fit to the design demand.

    岗南水库新增溢洪道挑流坎下游的防冲连锁齿墙,深埋在具有软弱夹泥层的岩基中,是用以保护抗力体不受冲刷的重要工程措施。设计上通过有限元分析,确定其受力变形及混凝土浇筑的温度控制指标,施工上实行跳仓开挖,并合理选用普氏稳定平衡拱作为开挖断面。采用分段微差爆破、台阶开挖方式和设弹性垫层等爆破减震措施,实现了基本无需支护的安全开挖。仪器监测结果表明,施工爆破对邻近新浇筑混凝土无不利影响,质量符合设计要求。

    Based on the theories of heat conduction and visco-elasticity, and according to the process of construction and operation of concrete gravity dams, the whole course simulation analysis is presented in this peper by using two and three dimensional F. E. M.. The following Factors were considered in computation, the time sequence and temperature of concrete placement, the hydration heat of concrete, the atmosphere temperature, the course of reservoir storing water, the water level and water temperature of reservoir...

    Based on the theories of heat conduction and visco-elasticity, and according to the process of construction and operation of concrete gravity dams, the whole course simulation analysis is presented in this peper by using two and three dimensional F. E. M.. The following Factors were considered in computation, the time sequence and temperature of concrete placement, the hydration heat of concrete, the atmosphere temperature, the course of reservoir storing water, the water level and water temperature of reservoir varying with depth and time during normal operation, the creep and autogenous volume change of concrete and ect..The results obtained show that the temperature load is one of the most important loads of gravity dams and the temperature stress makes up a large percentage of total stress. Especially the temperature stress in the course of construction affect the stress of whole course outstandingly. This paper also presents some opinions on the temperature control of concrete grevity dams.

    本文根据热传导理论和粘弹性理论、按照混凝土大坝的施工和运行过程、采用二维和三维有限单元法、对混凝土重力坝进行了全过程仿真分析。在计算中考虑了下列因素:混凝土分层浇筑时间、浇筑温度、气温变化、水库蓄水和正常运行水位、水温变化、混凝土徐变和自生体积变形等。计算结果说明温度荷载是重力坝最重要的荷载之一,温度应力在总应力中占很大比重,特别是施工期的温度应力对大坝全过程中的应力有很大影响。本文还对重力坝的温度控制提出了问题和意见。

    RCC dam construction technology is applied in overflow section in principal part of the TongjieziWaterpower Project.In temperature control reserach,not only conventional computation method is used,but also planned construction schedule.Based on statistical mean monthly air temperature at damsite andgivin placing temperature,pseudo real computation during whole dam construction period was carried out,temperature and stress of dam were analyzied.

    铜街子水电站主体工程中的溢流坝段采用碾压混凝土筑坝技术。在温度控制研究方面除用常规计算外,还采用按计划的施工进度,根据坝址区统计月平均气温及拟定浇筑温度进行筑坝全过程仿真计算,并对坝的温度及应力进行了分析。

     
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