对钢筋混凝土裂缝的探讨

Discussions on Reinforced Concrete Cracks

钢筋混凝土的裂缝控制问题是建筑工程中很重要的问题之一,特别是泵送商品混凝土获得广泛应用之后,在混凝土均质性有了很大改善的同时,裂缝控制技术难度增加了。在查阅大量资料的基础上,概述了变形作用引起裂缝的原因,约束变形特征,"抗与放"的设计准则以及减少开裂的措施等。

Cracking control of reinforced concrete is one of the most important problems in construct engineering, especially in the recent 20 years, after the extensive application of the pump-sending concrete, the homogeneity of the concrete has a very big improve, at the same time, the technology of the cracking control becomes more and more difficult. Base on a great deal of data, reason of cracking, restraint deformation characteristic, design principle of ＂to resist and to release＂ and method for decreasing cracks are pro vided.