本文从混凝土坝分层浇筑坝体温度的实际问题中，抽象出一类抛物偏微分方程组的混合问题，并且证明了其广义解的存在唯一。
In this paper, an abstract mixed problem of a class parabolic differential equations is generalized from the dam body temperature during the stratified placement of concrete dam.
提出了大型桥梁中大体积混凝土成层浇筑过程一维温度场的解析解。
In this paper, the analytical solution of massive concrete temperature field of one dimension in stratifying construction of large bridge is presented.
故超长地下室采用微膨胀混凝土浇筑而不设温度伸缩缝是一种经济、有效的措施。
Adopting tiny extended concrete to build the excessive regulation length basement without setting expansion joint for temperature is an economical and efficient design.
通过对混凝土强度原理的分析，提出了混凝土浇筑中温度对质量的影响，并提出了混凝土养护方法及关键工艺。
Through the analysis of concrete strength mechanism, discussion is made on the impact of temperature on concrete construction quality, and provided the maintenance methods and techniques.
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。
But, concrete placement temperature, surrounding temperature and the heat of hydration of cement, they take a more affection on lining thermal stress.
温度应力计算时应考虑混凝土浇筑时间的不同、后浇带的设置对温度应力的影响。
While calculating the thermal stress, the influence of concreting time and the arrangement of post-pouring belt on the thermal stress should be considered.
重点介绍机械设备布置、温度及应力应变测点布置、混凝土分层分段整体浇筑等技术措施。
The arrangement of machine, equipment and monitoring points of temperature, stress and strain, the technology of layered and segmented integral pouring are introduced in detail.
对于大体积混凝土建筑，水泥水化热引起混凝土浇筑内部温度和温度应力剧烈变化，是导致混凝土发生裂缝的主要原因。
For mass concrete construction, cement caused by hydration heat of concrete pouring temperature and internal stress of dramatic changes in temperature, is the main reason for cracks in concrete occur.
给出了大体积混凝土整体分层浇筑方案，并对大体积混凝土温度进行测定，保证了施工质量。
Concrete was poured in layers and temperature of mass concrete was measured. As a result, construction quality is ensured.
给出了大体积混凝土整体分层浇筑方案，并对大体积混凝土温度进行测定，保证了施工质量。
Concrete was poured in layers and temperature of mass concrete was measured. As a result, construction quality is ensured.
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