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摘要正如我国的裂缝专家王铁梦的“天衣有缝”论，在大体积混凝土结构的建设和使用过程中往往不可避免的会出现不同程度、不同形式的裂缝现象，这是十分普遍的。本文首先介绍大体积混凝土的定义，然后分析施工过程中大体积混凝土裂缝产生的原因，最后总结这些裂缝的预防控制措施。与此同时本文结合施工实例（MOCO购物中心大体积混凝土基础）分析各种应对施工裂缝的措施在工程实际运作过程中的实际效果。最终系统的总结大体积混凝土施工裂缝的产生原因以及预防措施，只有结合施工实际情况在施工前抓住导致大体积混凝土施工裂缝的主要原因，做好施工工艺施工具体方案的设计；施工中严格遵守规章制度，加强施工管理；施工后做好监测保养措施才能在实际的施工过程中控制大体积混凝土裂缝的产生。50636
Abstract
As Chinese experts Wang Tie meng’s cracks in the "day garment seam" theory, in the mass concrete structure construction and use process, often will inevitably appear different degree, different forms of cracks, it is very common. This paper first introduces the definition of mass concrete, and analyzes the reasons of the large volume concrete cracks during the construction process, and finally summarize the prevention and control measures of cracks. At the same time this paper presents an example of the construction (MOCO shopping center of mass concrete foundation) analysis of all kinds of measures to deal with construction cracks in engineering practical effect in the process of actual operation. Final system construction cracks in big-volume concrete summary of the causes and preventive measures.Only the combination of the actual situation of the construction in the construction of grasping the main causes of mass concrete construction cracks, design to construction technology specific operation; strictly abide by the rules and regulations construction, strengthen construction management; construction to produce monitoring maintenance measures to control the crack in mass concrete in the process of actual.
Key words: mass concrete; Fracture; The reason; Prevention study;
目 录
第一章 绪论： 1
1.1选题的背景 1
1.2选题的目的和意义 1
1.3.1国内研究现状： 2
1.3.2国外研究现状 3
1.3.3存在问题： 3
第二章 大体积混凝土施工裂缝产生的原因 4
2.1大体积混凝土的定义 4
2.2大体积混凝土的特点 4
2.3裂缝的定义分类危害 5
2.4产生裂缝的主要原因有以下几方面： 6
2.4.1水泥水化热 6
2.4.2外界气温变化 7
3.4.3混凝土的收缩 7
第三章 大体积混凝土施工裂缝的控制 8
3.1设计措施 8
3.1.1水泥的选择 8
3.1.2粗细骨料的搭配