大角度斜交箱涵设计研究与应用

Design, Research and Application of Large-angle Skew Box Culvert

摘要:

受城市道路规划线位的限制，在城市道路设计中，需跨越现状河涌时常采用大角度斜交箱涵的设计。依托已完工的工程实例，根据现有相关规范的要求，分析大角度斜交箱涵的受力特征，并结合箱涵计算常用的三种有限元计算方案，运用MIDAS Civil有限元软件分别建立不同跨度的平面框架模型和三维板壳模型并进行计算，对比三种模型的计算结果差异，分析三种模型的优势与不足，最后针对大角度箱涵的构造，结合计算结果提出合理、实用的设计建议，以为后续同类工程的设计提供参考。

Abstract:

Due to the limitations of urban road planning lines, in urban road design, it is necessary to design the large-angle skew box culverts that cross the existing rivers. Based on the completed engineering examples and existing relevant specifications, the stress characteristics of large-angle skew box culverts are analyzed. And combined with three kinds of finite element calculation schemes commonly used in box and culvert calculation, Midas civil finite element software is used to establish the different-span plane frame model and three-dimensional plate shell model for calculation. The differences in the calculation results of the three models are compared, and the advantages and disadvantages of the three models are analyzed. Finally, aiming at the construction of large-angle box culvert and combined with the calculation results, the reasonable and practical design suggestions are proposed, which provides the reference for the design of similar projects in the future.