一、裂缝的成因裂缝产生的形式和种类很多,要根本解决混凝土中裂缝问题,还是需要从混凝土裂缝的形成原因人手。正确判断和分析混凝土裂缝的成因是有效地控制和减少混凝土裂缝产生的最有效的途径。(一)设计原因1.设计结构中的断面突变而产生的应力集中所产生的构件裂缝。2.设计中对构件施加预应力不当,造成构件的裂缝(偏心、应力过大等)。 First, the causes of cracks Cracks arise in many forms and types, it is necessary to fundamentally solve the problem of cracks in concrete, or need to crack the reasons from the concrete staff. Correctly judging and analyzing the cause of concrete cracks is the most effective way to effectively control and reduce the concrete cracks. (A) design reasons 1. Design structure of the sudden changes in the section resulting stress concentration cracks generated by the components. 2. The design of prestressed components to impose improper, resulting in component cracks (eccentric, excessive stress, etc.).