| 摘要: |
| 拱形屋面结构单层空旷建筑的基础偏心距较大，用常规设计方法基础面积过大，使这种结构在实际工程中的应用受到限制。分析了这种结构的受力特点，针对我国的工程实际，提出了改进基础设计的几种方法：1)加大基础自重，利用基础梁把墙体的重力传给基础；2)采用复合基础，将条形基础和独立基础浇筑成整体，使条形基础承担部分弯矩和剪力；3)风荷载较小且没有吊车时采用偏心基础，相当于预先给基础施加适当的反向弯矩。工程实例表明，与常规设计相比，采用复合基础设计的独立基础底面积较小，降低了基础高度，混凝土体积减小约30％。降低了工程造价，方便基础施工。 |
| 关键词: 拱形屋面 空旷建筑 建筑基础 实用设计 屋面结构 受力特点 条形基础 独立基础 基础高度 混凝土体积 |
| DOI：10.11841/j.issn.1007-4333.2003.02.049 |
| 修订日期：2002-09-02 |
| 基金项目: |
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| Optimum design and study of foundation of spacious buildings with arch corrugated roof |
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| Abstract: |
| Large eccentricity of foundation of the long span building with arch roof makes the bottom area of foundation so large that it cannot be unrestricted adopted in practice. This paper analyzed the characteristic of those structures with this type roof, aim at the fact of engineering in China, provides several methods to improved foundation. 1) Increasing deadweight of foundation, the foundation beam under the wall will transfer the weight of the wall to the foundation; 2) Using composite foundation, construct the foundations of wall and column as a whole, the foundations of the wall endures part of the moment and shear force from the colum; 3) If the building endures little wind load and has no crane, eccentric foundation can be used, a proper reverse moment is given to the foundation. It was testified by engineering case that the composite foundation has smaller bottom and less volume than those foundation designed by general method. The improved foundation can save about 30% concrete. The cost was reduced and the construction will be convenient. |
| Key words: arch roof,foundation,eccentricity |
