桥梁裂缝分析外文文献翻译.doc

桥梁裂缝分析外文文献翻译 () 英文原文 The bridge crack produced the reason to simply analyse In recent years, the transportation infrastructure in our province has been rapidly developed, and a large number of concrete bridges have been built throughout the province. During the construction and use of bridges, reports about the impact of cracks on the quality of the project and even the collapse of the bridge have become commonplace. Cracking of concrete can be described as “frequently-occurring disease” and “frequent disease,” often plaguing bridge engineering technicians. In fact, if you take certain design and construction measures, many cracks can be overcome and controlled. In order to further strengthen the understanding of cracks in concrete bridges and avoid as much as possible damage in the project, this paper makes a comprehensive analysis and summary of the types and causes of cracks in concrete bridges so as to facilitate design and construction to find out the control. The feasible methods of cracks have achieved preventive effect. The type and cause of cracks in concrete bridges In fact, the causes of cracks in concrete structures are complex and numerous, and even a variety of factors influence each other, but each crack has one or several major causes. The types of concrete bridge cracks can be roughly divided into the following categories: 1. Cracks caused by loads The cracks produced in concrete bridges under conventional static and dynamic loads and sub-stresses are called load cracks and they are mainly classified into direct stress cracks and secondary stress cracks. Direct stress cracks refer to cracks caused by direct stresses caused by external loads. The causes of cracks are: 1. In the design calculation stage, structural calculations are not calculated or partly missed; the calculation model is irrational; the structural force assumption is inconsistent with the actual force; the load is calculated or missed; the internal force and reinforcement are not c