阐述砼裂缝以及由于施工可能引起箱涵产生裂缝的原因,并以新长线某里程段框架桥出现裂缝情况为例,分析裂缝产生原因,提出以后在施工中如何有效控制裂缝产生。 The reasons for the cracks in the concrete culvert caused by the construction and the cracks that may occur in the culvert due to the construction are described. Taking the case of cracks in the frame bridges of a certain mile section of the new long line as an example, the causes of the cracks are analyzed, and how to effectively control the cracks in the future is put forward.