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The Study on Transverse Distribution of Curved Beam Based on Rigid-crossbeam Method

Author: ZhangHuaBing
Tutor: ZhangHaiLong
School: Huazhong University of Science and Technology
Course: Bridge and Tunnel Engineering
Keywords: Curved beam Bend-twist coupling Rigid-crossbeam method Transverse distribution Influence lines
CLC: U448.21
Type: Master's thesis
Year: 2007
Downloads: 70
Quote: 0
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Abstract


With the rapid development of China’s modernization, the people’s demands of getting around are increasing. The people demand not only the traffic is convenient and rapid but also the visual appearance of traffic constructions getting better in recent ten years. Because of the constant improvement and development of the road network, the crosses between roads are also increasing, so there are many cross-bridges. The design of expressway requests that the layout of middling bridges and small bridges on expressway. For the crosses of highway and urban road, the curved bridges are necessary to connect the traffic directions. Therefore the curved bridges are important in modern traffic engineering.Because of the different mechanics characteristics between the curved bridges and the straight bridges, so the design and the analysis methods of the curved bridges are different from the straight bridges. The study is based on the flexibility theory of the thin structures and the writer introduces the character of the curved beam bridges. Then the writer analyses the curved beam bridges whose degree of redundancy is one and calculates the spring constant of the load lateral distribution. According to the rigid-crossbeam method, the writer calculates the formula that applies to the curved bridges and programs it. There are two different methods that can calculate transverse distribution, one is the program and the other is emulator. The writer comes to a conclusion that the program is usable after analyzing the result.Finally, the writer makes a chart of transverse distribution by defining the correlative constants. This article is well helpful to the design of the similar curved beam bridges.

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CLC: > Transportation > Road transport > Bridges and Culverts > All kinds of bridges > Bridge: Structure > Beam bridge
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