营改增3.ppt

研究生课程考核试卷
(适用于课程论文、提交报告)
科目: 现代施工技术教师: 姚刚
姓名: 蔡宇学号: 20141613108
专业: 建筑与土木工程类别: 专业
上课时间: 2014 年 12 月
考生成绩:
卷面成绩
平时成绩
课程综合成绩
阅卷评语:

阅卷教师(签名)
重庆大学研究生院制
目录
摘要 II
Abstract III
第一章绪论 1
第二章裂缝种类及成因 2
2
4
第二章裂缝控制方法 6
6
6
7
8
第三章施工方案 10
10
10
11
12
第四章结论 13
参考文献: 14
大体积混凝土施工技术研究
蔡宇 20141613108
(重庆大学土木工程学院重庆 400045)
【摘要】:本文主要对大体积混凝土的裂缝以及施工方案进行了分析和探讨。首先综合分析了大体积混凝土裂缝的种类及产生的原因,然后从设计施工角度展示了裂缝产生机理及对应的防治措施,重点研究温度裂缝产生的原因及其控制方法。再根据具体情况把这些措施灵活运用于具体大体积的混凝土施工上。在施工中对材料选择、配合比、外加剂、施工布置、浇筑工艺、养护等几个环节采取了严格的控制措施,并同时对施工现场进行了温度监测。监测结果内外温差均在合理的范围内,从而避免了裂缝的产生。随着我国现代化建设不断向前推进,大体积混凝土结构将越来越多的应用于大型工程建设中。所以这方面的研究工作及其成果也日益显得重要。
【关键词】:大体积混凝土;裂缝;施工;温度
Research on construction technology of large volume concrete
Cai Yu 20141613108
(Faculty of Civil Engineering, Chongqing University, Chongqing 400045, China)
Abstract:This paper is mainly on the large volume concrete cracks and construction schemes are analyzed and of all, prehensive analysis of the types and causes of cracks of mass concrete. Then show the crack mechanism and corresponding prevention measures from the angle of design and construction. Causes of the temperature crack of the focus of the study and its control method. According to the specific circumstances to these measures through the use of large volume concrete construction in. On the choice of material in construction, The mixture ratio, admixture, construction layout, pouring, maintenance and other several sectors to take strict control measures,at the same time to the construction site for temperature monitoring. The monitoring results show that the temperature difference between inside and outside are in reasonable range, in order to avoid the generation of crack. At present, as China's modernization construction forward constantly, large volume concrete structure will be applied more and more in the large-scale e