Study On Dynamic Performance For Slab Four-span Reinforced Concrete Arch With The Fengyu Lou Building On The Deck

Arch bridge is one of the most widely used form of bridge, because of its simple construction,beautiful appearance,material saving,strong spanning ability etc, especially suitable for mountainous highway, especially in southwest of China, arch bridge is widely used. With the constant development of social economy and the continuous improvement of people’s living standard, the public traffic is facing severe test, bear the transport hub of the large bridge is also facing the same situation, especially in large span bridge construction, bridge vibration dynamic characteristics is also gradually placed on the bridge builders and scientific research workers schedule. Therefore, the types of the dynamic characteristics of the bridge are also increasingly attracted attention, like earthquake, wind vibration, vibration and other bridges dynamic problem is typical of this type of bridge unable to avoid.The paper takes the Gui Zhou province Yu Ping county of wu yang river bridge as the engineering background, the static and dynamic load test analysis, combined with the midas full bridge finite element model theoretical analysis and comparison, obtains the wu yang river bridge dynamic performance parameters of finite element model, at the same time the gradual correction, perfect. Therefore, the paper mainly completes the work includes the following aspects:①According to the requirements of drawings, established four multi-arch reinforced concrete slab arch bridge midas finite element calculation model, at the same time the bridge was dynamic characteristics calculation, and the inherent frequency and vibration type dynamic performance characteristic values are analyzed.②Yu ping county of wu yang river bridge is a bridge built wooden structures and buildings (dong characteristics) of four multi-arch reinforced concrete slab arch bridge is analyzed in the paper, the wooden structure and building on four multi-arch reinforced concrete slab arch bridge dynamic performance.③After the completion of the project, the wu yang river bridge of yu ping was the completion of the project, the paper obtained in static,dynamic load test data, and the midas finite element calculation model of effective results contrast.④The static, dynamic load test data and midas finite element theoretical calculation model based on the results of the work, put forward midas finite element model updating, perfecting the content, until the results of model calculations and the bridge load test maintain the consistent.The paper theoretical simulation analysis, the storm building as influencing factors on the dynamic performance of the bridge, combined with bridge engineering test measured cross-structure vibration characteristics were compared, and road vibration test, analysis of a bridge structure driving under the impact. The arch ring deflection, static load conditions section stress test results show that the bridge structure, reasonable force, having good stiffness and strength.