| 张宽地,裴金萍,陈俊英,殷彦平.渠道渐变体土方计算的精确公式[J].干旱地区农业研究,2007,(5):136~139 |
| 渠道渐变体土方计算的精确公式 |
| The precise calculation formula of physical volume of the changeover form of channel |
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| DOI：10.7606/j.issn.1000-7601.2007.05.27 |
| 中文关键词: 渐变体 土石方计算 计算公式 |
| 英文关键词:the changeover form calculation of earthwork calculation formula |
| 基金项目:中科院黄土高原土壤侵蚀与旱地农业国家重点实验室开放基金项目(10501-141)； 西北农林科技大学青年重点基金项目(080807) |
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| 中文摘要: |
| 渐变体作为衔接不同断面形式的过渡段,被广泛地用于输水建筑物工程中,但其土方计算目前没有统一科学的计算方法。为此,本文列出了工程中常见的几种渐变段形式,并通过对断面函数数学特性进行分析,得到了常见渐变体任一断面面积函数为二次抛物线。因此,可通过起始断面面积,终止断面面积和中断面面积唯一确定任一断面面积函数,并将该函数沿渐变体长度方向积分,推导出渐变段土方计算的精确、通用计算公式。计算实例表明计算过程简单、误差小,概念清晰,可供设计人员参考。 |
| 英文摘要: |
| As the transition section to link with different cross sections,the changeover form is widely used in water distribution-building project,but it doesn't have a united scientific calculational method in calculation of earthwork at present.Therefore,this paper here lists several changeover forms commonly used in project.Based on the analysis of its mathematics characteristics of cross section function,by applying calculus integral theory,a general calculation formula of physical volume of the changeover form will be obtained,characterized by simpler calculation,fewer error,and clearer concept.Thus this new formula will provide the designers with great help in engineering practice. |
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