筏形基础大体积混凝土温控防裂措施研究

被引量 : 2次 | 上传用户:huangxianhua007
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
With the enlargement of economic construction, buildings tend to be high, deep, weighty and complex, for instance, some water conservancy structures of massive concrete like dams, ship locks, sluicing buildings, hydropower stations, some foundations in civil buildings like large facilities foundations, box or raft foundation slabs of high-rise buildings, pile-supported beams with highly bearing capacity, foundations of long-span bridges. These are massive concrete structures. Massive concrete has been widely applied to water projects, buildings and transport works. The key issues in the construction of massive concrete are the estimation, evaluation and previous control on the temperature due to its characteristics.Many studies have been performed on massive concrete of water works and concrete structure of small volume. And people have gained some theories and experience on controlling and dealing with creaks. However, some concrete structures like sluices and massive concrete bottom plates are not given much attention to. So great importance should be attached to the problems of great cement consumption and hydrated heat, which result from the application of water-proof concrete with intensity and enriched grout. Based on the structural characteristics of massive concrete in the basement of the terminal building of Guangzhou New Baiyun International Airport, the paper gives analysis and studies on various measures of temperature control, including selection of moderate heat cement, mixing superplasticizer, fly ash, expansion agent, polyropylene fiber, maintenance by covering the surface with water and cooling by piping water, etc. And the papers also make an evaluation on the effect of temperature control. A conclusion of instructing construction practice is drawn,which is of significance to the research on crack prevention in similar cases.
其他文献
"纲要"课程运用情感教学法,可以调动学生的积极性,增强教学感染力。教学方式多样,包括情境模拟、遗址实践、主题实践、媒体教学等。教师要树立起情感教育的目标,建构起实现目
自2008年三季度以来,中国国航和东航因燃油套期保值造成的大面积亏损成为热点话题,一下将套期保值的金融工具也推到了风口浪尖,究竟是何故造成两家公司的巨额亏损,金融衍生工
现代人们的生活节奏日益加快,在服装、饮食等方面越来越追求西方的简捷的风格,在国内外室内设计上也已经成为了流行趋势。随着全球化的东方潮流和新式古典主义的流行,家居环
随着时代发展,建筑房间之间的隔声性能(尤其是分户墙的隔声性能)越来越受到人们关注。空气声隔声是对空气传播声音的隔绝,房间之间空气声隔绝的性能是评价室内环境私密性的重
培训体系是人力资源管理的重要领域,也是决定公司人才竞争优势的重要方面。通过问卷调查和访谈法诊断出AB公司存在的问题,从培训组织机构、培训制度、培训需求调查、培训内容
<正>由于高速公路的特殊性,无法像城市道路一样设置全程照明,因此在夜晚时段,由于缺少环境照明,监控图像的效果很差,往往达不到监控需求。夜视系统介绍目前夜视系统主要分为
时下,"亲子乐园"对于家长来说已不是很陌生了。各地大大小小的亲子乐园很多,带孩子参加亲子活动的家长也为数不少,但是,家长究竟应该从亲子乐园获得些什么?
<正>每年提名和任命委员会都会在一家第三方咨询公司的帮助下举行对董事会的绩效评估程序。该程序要求所有董事必须秘密完成由提名和任命委员会与咨询公司设计的在线调查问卷
在大力开展学习实践科学发展观活动中,深入探讨和研究高校党建工作基本规律是落实科学发展观、做好高校党建工作的理论与实践基础。本文紧紧围绕高校党建的三个作用主体、三