桥梁下部结构病害分析及检测加固措施研究

发布时间：2018-05-27 09:35

本文选题：梁桥 + 下部结构　；参考：《长安大学》2016年硕士论文

【摘要】：随着我国交通运输行业迅速发展,大量的基础设施需求也使公路建设事业也蓬勃发展;在过去几十年时间中建造了大量桥梁,我国也成为了世界上的桥梁大国。由于一直以来都处于发展阶段,在建设桥梁初期,虽然考虑了当时的技术要求和先进材料,任然难以摆脱历史局限性;并且当时经济状况的制约下,加上现在大型车,重车与日俱进,超载、超限现象越来越严重,运营一段时间的桥梁开始出现缺陷和病害,对于桥梁健康和交通安全损害严重,倘若推到重建既浪费金钱也消耗时间,所以桥梁检测维修加固成为了时下逐渐热门的研究领域。现在桥梁检测加固也受到交通部门重视,但是由于这方面的技术处于不成熟阶段,检测工作也比较局限,不能对桥梁进行全方位的检查,这使桥梁病害不能彻底查明,也存在安全隐患。例如现在对于大多数梁桥的检测加固大多注重上部结构,而下部结构的检测加固工作还很欠缺;加上两个部位受力环境不同但又相互联系,出现偏移、变位后影响程度有差异但又互相制约,所以对于梁桥检测加固时,上、下部结构应该同时考虑,充分分析其病害类型和影响程度,采用针对有效的方法进行维修加固处理。本文主要讨论梁桥下部结构病害类型,对它们产生的原因和对桥梁整体影响进行分析,通过力学软件MIDAS对其中一种进行具体分析,并且阐述现在已有的检测加固方法和具体的操作流程,对于存在的不足之处进行改进,探讨出对于梁桥下部结构新的检测加固方法,更加有利于桥梁健康,延长使用寿命。
[Abstract]:With the rapid development of the transportation and transportation industry in China, a large number of infrastructure needs also make the road construction enterprise flourish. In the past few decades, a large number of bridges have been built. China has also become a great bridge country in the world. Since it has always been in the stage of development, it has taken into account the technical requirements at the beginning of the bridge construction. It is difficult to get rid of the advanced materials, and it is difficult to get rid of the historical limitations; and under the restriction of the economic situation at that time, in addition to the current large cars, heavy cars and days, overloading, exceeding the limit phenomenon became more and more serious, the bridge started to appear defects and diseases for a period of time, serious damage to the health of the bridge and traffic safety, if it was pushed to the reconstruction of the waste of gold. Money also consumes time, so bridge inspection and maintenance has become a hot research field. Now bridge detection and reinforcement are also paid attention by the traffic department. However, because of the immature technology in this area, the detection work is limited, and the bridge can not be checked in all directions, which makes the bridge disease can not be thoroughly checked. For example, for example, most of the bridge and bridge detection and reinforcement now focus on the superstructure, and the lower structure of the detection and reinforcement work is still very short; and the two parts of the force environment is different but also interrelated, the deviation, the degree of influence after the variation is different but mutually restrictive, so the beam bridge testing and strengthening, so the beam bridge, At the same time, the substructure should be considered at the same time, the type of disease and the extent of its influence should be fully analyzed, and the effective methods are used for maintenance and reinforcement. This paper mainly discusses the disease types of the lower beam bridge, the causes of them and the overall influence on the bridge, and through the mechanics software MIDAS, a specific analysis is carried out. In addition, the existing methods of testing and strengthening and the specific operation process are expounded, and the shortcomings of the existing problems are improved, and a new method for detecting and strengthening the lower structure of the beam bridge is discussed, which is more conducive to the health of the bridge and the prolongation of the service life.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U445.7

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