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Study on Some Problems of Curved Bridge

Author: YangZhongPing
Tutor: WangYuanHan
School: Huazhong University of Science and Technology
Course: Bridge and Tunnel Engineering
Keywords: Curve Beam Bridge Temperature Effect Pre- eccentric Dynamic characteristics
CLC: U448.21
Type: Master's thesis
Year: 2005
Downloads: 295
Quote: 4
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Abstract


With the acceleration of the process of the development of transport and urbanization , a large number of curves girder bridge used in highway and urban overpass . Due to lack of knowledge , such as temperature, eccentricity , curves girder bridge design and use , there are some problems . In this paper, Jiang Zhuhai Expressway overpass curved girder bridges (R = 75.00m) as the research object , using the finite element program ANSYS to study the effect of temperature on curved girder bridges , and discuss the eccentricity of the dynamic characteristics of curved girder bridges impact. First, a review of the application and research status quo of curved girder bridges reviewed curved girder bridges theoretical calculation method focuses on structural mechanics in curved girder bridges lateral distribution coefficient calculation method of rigid cross and longitudinal analysis method Act on the finite element method of the bridge structure . Second, the temperature on the curved girder bridges , curve girder bridge Temperature effect on the status quo and the States to regulate the temperature loads requirements. Engineering design of the actual need , thermal - structural coupling analysis method , specific reaction force force changes in temperature under the curved girder bridge supports . Span curved girder bridges ( 4 × 20.5m) bearing five temperature conditions by comparative analysis of the situation , to come to temperature bearings at both ends of the curved girder bridges force for engineering design to design curved girder bridges provide a design basis . Finally, to reduce the bending of curved girder bridges torsion coupled design to adjust by setting the eccentric distance . In this paper, the two calculation methods eccentricity . On the basis of the theory of evolution and the three commonly used seismic analysis methods of the advantages and disadvantages of commentary seismic force , through concrete examples to explore the impact of the eccentricity of the dynamic characteristics of curved girder bridges drawn eccentric and not eccentric curved girder bridges in the dynamic characteristics aspect is not very different conclusion .

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