中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2021, Vol. 40 ›› Issue (01): 87-95.DOI: 10.3969/j.issn.1674-0696.2021.01.14

• 交通基础设施工程 • 上一篇    下一篇

一种新型异形椭圆隧道横断面的性质及优化设计

武 周 虎   

  1. (青岛理工大学 环境与市政工程学院,山东 青岛 266033)
  • 收稿日期:2020-05-28 修回日期:2020-10-31 出版日期:2021-01-11 发布日期:2021-01-11
  • 作者简介:武周虎(1959—),男,陕西岐山人,二级教授,博士生导师,主要从事水利、土木和环境工程技术方面的研究。E-mail:wu_zh2008@aliyun.com
  • 基金资助:
    国家自然科学基金项目(51379097,50979036)

Properties and Optimization Design of a New Heteromorphic Ellipse Tunnel Cross-Section

WU Zhouhu   

  1. (School of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266033, Shandong, China)
  • Received:2020-05-28 Revised:2020-10-31 Online:2021-01-11 Published:2021-01-11
  • Supported by:
     

摘要: 基于河流二维对流扩散物质的等浓度线方程,定义了一种新型二参数异形椭圆内轮廓线方程;运用数学方法,推导了异形椭圆面积、周长、形心坐标、压缩系数和曲率半径的计算公式;对异形椭圆进行了形状分类:当压缩系数θ=1时称为标准型,当0<θ<1时称为H型,当θ>1时称为W型;根据单向公路隧道建筑限界,给出了控制点坐标表达式;按照将建筑限界完全包容在内和隧道洞室净空面积最小的原则,提出了异形椭圆横断面的约束条件、目标函数和优化设计方法。研究表明:异形椭圆与建筑限界的符合程度高;与三心圆横断面相比,异形椭圆具有设计参数少、曲率半径变化连续、隧道洞室净空面积小、支护与衬砌周长短、仰拱开挖和回填工程量小等优点。

 

关键词: 隧道工程, 隧道横断面, 异形椭圆内轮廓线, 几何性质, 优化设计方法

Abstract: Based on the isoconcentration curve equation of two-dimensional convection-diffusion material in river, a new type of two-parameter heteromorphic ellipse inner outline equation was defined. By means of mathematics, the calculating formulas of area, perimeter, centroid coordinates, coefficient of compressibility and radius of curvature of the heteromorphic ellipse were deduced. The shape of heteromorphic ellipse was categorized: when the coefficient of compressibility θ=1, it was called the standard-type; when 0<θ<1, it was called the H-type; when θ>1, it was called the W-type. According to the construction clearance of one-way highway tunnel, the coordinate expression of control point was given. According to the principle that the construction clearance was fully included and the clearance area of tunnel chamber was minimum, the constraint conditions, objective function and optimization design method of the heteromorphic ellipse cross-section were proposed. Research shows that the heteromorphic ellipse has a high degree of conformity with the construction clearance. Compared with the three-centered circle cross-section, the heteromorphic ellipse has the advantages of less design parameters, continuous change of curvature radius, smaller clearance area of tunnel chamber, shorter support and lining perimeter, and smaller engineering quantities of inverted arch excavation and backfill.

Key words: tunnel engineering, tunnel cross-section, inner outline of heteromorphic ellipse, geometric properties, optimization design method

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