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昆明冶金高等专科学校学报 ›› 2015, Vol. 31 ›› Issue (5): 73-77.DOI: 10. 3969/j. issn. 1009—0479.2015.05.014

• 建筑设计与土建施工 • 上一篇    下一篇

挂车—300荷载作用下钢筋混凝土盖板涵通用图计算与编制

杨家勇   

  1. 国家林业局昆明勘察设计院,云南昆明650216
  • 出版日期:2015-11-30 发布日期:2015-11-30
  • 作者简介:杨家勇(1978—),男,云南威信人,工学硕士,高级工程师,主要从事道路和桥梁的设计与研究工作。

The Calculation and Compiling of RC Slab Culvert General-purpose Drawing under Load of G-300

YANG Jia-yong   

  1. China Forest Exploration & Design Institute in Kunming, Kunming 650216,China
  • Online:2015-11-30 Published:2015-11-30

摘要:

通过钢筋硅盖板涵基本计算理论和内力计算的分析,根据计算参数和挂车—300荷载作用的特点,介绍计算的步骤和内容,并以示例说明确定通用图基底承载力的方法。通过通用图计算的大量数据及对比分析计算表明:在挂车—300荷载作用下进行涵洞计算,不同跨径、不同涵台高、不同镇土高、不同荷载,其计算的控制荷载不同。若以挂车—300荷载计算其涵洞尺寸,其计算结果将不能满足比挂车—300荷载小的某些车型安全通过;其次,特载对大孔径涵洞盖板的荷载效应影响较大,在《钢筋混凝土盖板涵通用图》(荷载:公路-Ⅱ级特载挂车-300;斜交角:0°)计算时将跨径4. 00 m涵洞的板顶镇土高度限制在0.5~6.0 m 之内,应根据实地情况选用。

关键词: 涵洞, 通用图, 计算

Abstract:

Through the analysis of elementary calculation theory and internal force calculation of reinforced concrete cover plate,the steps and contents of the calculation are introduced in detail according to the calculation parameters and the characteristics of the 300 loads. The examples are given to show a method of determining the bearing capacity of a common graph. General diagram calculation of large amounts of data and comparative analysis of calculation shows: using different span,different culvert,a different filling height,different load,the calculation of the control load is different when calculation of culvert is under—300 loads. If calculation of the culvert size is done using the trailer—300 loads,the calculated results will not meet safe passage of less than 300 trailer loads. Moreover,the load effect of the large aperture culvert cover is very large. In the reinforced concrete cover culvert general map (load: Highway-II special loading Trailer-300; oblique angle: 0 degrees),the calculation of top filling height of 4.00 m culvert is limited to the range of 0.5~6.0 m. It should be used in the selection according to conditions on the ground.

Key words:  culvert, general-purpose drawing, calculation

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