This article came from the structure design of concrete structure discussed the crack problem, and puts forward the main construction measures for crack control.
本文从建筑结构设计上来探讨了混凝土结构所存在的裂缝问题，并提出了控制裂缝的主要施工措施。
The paper analyses causes for crack initiation, and suggests some measures to prevent and control crack initiation in aspects of design, material and construction.
本文分析了裂缝形成的原因，对设计、材料、施工等方面提出一些预防大体积砼裂缝的想法及处理措施。
To control it efficiently, the causes for crack occurring and practical, economical measures in process of design and construction must be research and taken.
对砼裂缝进行控制，就必须研究砼结构中裂缝产生的原因以及在实际的设计和施工过程中采取合理的、经济的措施来控制裂缝。
The crack size is crucial for structure fatigue design, fracture mechanics analysis, judgment criterion of fracture and fracture control.
裂纹几何尺寸是在结构的抗疲劳设计、疲劳断裂力学分析、断裂判据和疲劳断裂控制中非常重要的依据。
Then, through the crack width and crack spacing analysis, proposed control measures for cracks from design, construction, etc.
然后，通过对裂缝宽度和裂缝间距的分析，从设计、施工等方面提出控制裂缝的措施。
Based on the theoretical study, the reasonable design and construction ways are presented for crack control.
本文通过对大体积砼裂缝成因的理论研究，提出了合理的裂缝控制的设计和施工措施。
The experiments indicate that the control parameters of crack development induced by hydraulic fracturing have practical meaning for improving the effect of prefracturing design for hard top coal.
试验表明，本文结果中水压裂缝扩展控制参数对改善顶煤预裂设计效果具有实际意义。
The technical measures of crack control are presented from materials, design, construction and maintenance of structure. It can be referred for engineers in design and construction.
提出从材料、设计施工和维护方面进行裂缝控制的技术措施。
The formula of strain and crack width of temperature and contraction with no varying place constraint con detion are deduced, capale be design basis for crack control of R. C structure.
阐述了砼结构体表比和约束比对温度和收缩应变和裂缝的影响程度，推导出R．C结构在四周无变位边界约束条件下的温度和收缩应变、应力及裂缝宽度计算公式和运用实例。
The formula of strain and crack width of temperature and contraction with no varying place constraint con detion are deduced, capale be design basis for crack control of R. C structure.
阐述了砼结构体表比和约束比对温度和收缩应变和裂缝的影响程度，推导出R．C结构在四周无变位边界约束条件下的温度和收缩应变、应力及裂缝宽度计算公式和运用实例。
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