This paper analyses the causes of common cracks of reinforced concrete Structure, and gives the crack controlling principle, measures, handling methods of the harmful cracks.
分析了钢筋混凝土结构裂缝的产生原因，提出了裂缝控制的原则、措施及有害裂缝的处理方法。
The methods about controlling alloy components and increasing melt purity were presented. The methods of preventing casting crack were presented.
提出了控制合金成分、提高金属纯洁度的方法，重点提出了解决扁铸锭裂纹的措施。
Its effect of controlling the concrete's crack and crush, decreasing the structural deformation and improving the structural stability is marked.
这种结构能有效的控制混凝土在爆炸冲击荷载作用下的开裂、震塌，限制结构的变形，增强结构稳定性。
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