魚梁河大橋橋梁結構設計穩(wěn)定性與承載能力分析
[Abstract]:With the rapid development of expressway in mountainous area, a large number of continuous rigid frame bridges are constructed in mountainous area. Most of continuous rigid frame bridges are constructed by cantilever pouring. Due to the limited constraints and many unfavorable construction factors, the structural stability of the bridge becomes the key point in the construction of the bridge. Taking the Yulianghe Bridge as the engineering background, this paper analyzes the structural stability and bearing capacity of the bridge. The main contents of this paper are as follows: (1) in the construction process of the Yulianghe River Bridge, The influence of different loads on the stability of T-shaped bridge is studied under the condition of cantilever pouring and maximum cantilever. The results show that the wind load has little effect on the stability of the bridge. Because of the drop of hanging basket and uneven weight, the pouring speed and anchoring must be controlled, the maximum cantilever state should be strictly controlled, and the stability of the bridge should be controlled effectively. (2) in the use of the bridge, it is necessary to control the stability of the bridge by strictly controlling the maximum cantilever state. (2) in the use of the bridge, The bending mode analysis and stability coefficient are determined by the common influence of crowd load and vehicle load on the continuous rigid frame bridge. Through the calculation and analysis, it is found that the minimum stability coefficient is located at the live load during the operation of the bridge. At the same time, the bridge closure and bridge system transformation affect the stability of the bridge.
【學位授予單位】:南昌大學
【學位級別】:碩士
【學位授予年份】:2015
【分類號】:U442.5
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