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不论是否施加预应力,混凝土结构的开裂看来是难以避免的。本文精练地分析了导致混凝土开裂的各种因素,提出了设计时应该特别注意的问题及解决的方法。事实上,只要能将混凝土开裂控制在一定范围内,是不会对耐久性和外观有影响的,而裂纹的控制则与钢筋的合理设置有很大关系。本文及其后面的CEB-FIP示范法规有关裂纹验算的部分条款”对此有详尽的叙述和规定,可以弥补现行规范之不足,对设计亦有参考价值。
Cracking of concrete structures appears to be unavoidable with or without prestressing. In this paper, the various factors leading to cracking of concrete are analyzed in detail, and the problems that should be paid special attention to and the methods to be solved are put forward. In fact, as long as the cracking of concrete can be controlled within a certain range, it will not affect the durability and appearance, and the crack control is closely related to the reasonable setting of the reinforcing bar. This article and the subsequent CEB-FIP model laws and regulations on crack check some of the provisions of "there are detailed narratives and provisions that can make up for the lack of existing norms, the design also has reference value.