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在“提高装配式钢筋混凝土桥上部构造的施工质量”与“略谈装配式钢筋混凝土桥上部构造及其裂纹的防止”两文中,提出了装配式钢筋混凝土桥梁肋产生裂纹的不同情况和原因,以及设计与施工方面应注意的一些问题。此外,近年来公路上所修建的大跨径(33公尺)钢筋混凝土悬臂梁桥中,也有不少的粱发生了裂纹。这些裂纹的产生在理论上应该怎样解释?裂纹产生后对构造物的耐久性的影响如何?以及如何防止裂纹的产生等等都是值得研究讨论的问题。本文拟从理论上来研究裂纹出现的问题,作为设计和施工方面的参考。
In the article “Improving construction quality of the upper part of the prefabricated reinforced concrete bridge” and “Slightly talking about the structure and the crack prevention of the upper part of the prefabricated reinforced concrete bridge”, this paper presents different situations and causes of cracks in the prefabricated reinforced concrete bridge rib, As well as design and construction should pay attention to some of the problems. In addition, in recent years, many large beams (33 meters) of reinforced concrete cantilever bridges built on the highway have been cracked. How these cracks should theoretically be explained? How do the cracks affect the durability of the structure? How to prevent the cracks? It is worth discussing and discussing. This article intends to study the problem of cracks in theory, as a reference for design and construction.