The Protective Repair And Reinforcement Of The Old Bridge In Mentougou

As is known to all, the arch bridge is a bridge at home and abroad the largest number, the most abundant type of bridge, is also China's early bridge form the main structure. Recent research shows that with the passage of time, the natural environment erosion and in recent years a considerable number of old arch bridge, such as reinforced concrete truss arch bridge and other common appeared weathered surface, many diseases, even decrease the capacity of the serious defects. However, by land, road line selection conditions, most of the arch bridge was demolished and rebuilt, only a part in some areas still in use or as preserved artifacts, so this kind of bridges need to be pay attention to, effective protection.Truss arch bridge is a new type of bridge developed after the foundation of the state, which is improved on the characteristics of a series of double curved arch bridges. Because of the truss arch bridge in Beijing area is a concrete truss arch bridge, the emphasis of this chapter is to introduce the concrete truss arch bridge. This paper mainly introduces the production and development of the truss arch bridge, the disease and its causes, and puts forward the reinforcement measures for the disease, so as to strengthen the protection and reinforcement of the truss arch bridge. This article is for to sort out the common diseases of such old truss arch bridge, and summarize corresponding maintenance and reinforcement measures, and Mentougou sluice old bridge, for example, the systematic investigation of the bridge diseases, through the established finite element model, the simulation under various conditions of the bridge acceptance condition checking and analysis of the causes of disease and take protective repair, the repair old as the old principle of reinforcement. After strengthening, the bridge is subjected to stress analysis, through the reinforcement, the effect of the bridge is good. In this paper, the issue of research, the old truss arch bridge to provide technical support for the protection and reinforcement.