| 超大跨径变截面钢筋混凝土拱式渡槽抗震分析 |
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| 引用本文： | 胡少伟,游日.超大跨径变截面钢筋混凝土拱式渡槽抗震分析[J].水电能源科学,2012,30(1):103-106，61. |
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| 作者姓名： | 胡少伟 游日 |
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| 作者单位： | 南京水利科学研究院,江苏南京210029;水利部水工新材料工程技术研究中心,江苏南京210024 |
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| 基金项目： | 水利部前期基金资助项目（S409001）；国家科技支撑计划课题基金资助项目（2009BAK56B04） |
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| 摘 要： | 结合跨径200m的超大跨径变截面拱式渡槽的结构设计方案,通过建立有限元模型,对渡槽进行了动力特性和地震响应分析。结果表明,设计方案拱轴系数的取值合理,拱脚偏心弯矩引起的拉应力在允许范围内;变截面的做法增大了拱脚截面刚度,增强了拱圈的稳定性,有效地减小了起控制作用的拱脚处的轴向拉应力,可满足渡槽抗震要求。
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| 关 键 词： | 超大跨径 变截面 钢筋混凝土 拱式渡槽 抗震分析 |
Aseismic Analysis of Long Span Reinforced Concrete Arched Flume with Variable Cross Section |
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| HU Shaowei and YOU Ri.Aseismic Analysis of Long Span Reinforced Concrete Arched Flume with Variable Cross Section[J].International Journal Hydroelectric Energy,2012,30(1):103-106，61. |
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| Authors: | HU Shaowei and YOU Ri |
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| Affiliation: | Nanjing Hydraulic Research Institute, Nanjing 210029, China; Research Center on New Materials in Hydraulic Structures of Ministry of Water Resources, Nanjing 210024, China;Research Center on New Materials in Hydraulic Structures of Ministry of Water Resources, Nanjing 210024, China |
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| Abstract: | Combining the structural design scheme of 200 m span arched flume with variable cross section, FEM is established to analyze dynamic characteristic and seismic response. The results show that the value of arch axis coefficient is reasonable for the current design scheme; the tensile stress caused by eccentric bending moment of springing is in the allowable range; the variable cross section increases the stiffness of springing section and enhances the stability of arch ring, which reduces the axial tensile stress of springing effectively. Therefore, it can meet the aseismic requirements of flume. |
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| Keywords: | long span variable cross section reinforced concrete arched flume aseismic analysis |
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