| 本文已被：浏览 86次 下载 106次 |
码上扫一扫！ |
| 日光温室骨架合理曲线的一种数值化表达方法 |
|
齐飞1,2，何芬1,2*，赵云云1,2，侯永1,2，丁小明1,2
|
|
|
| (1.农业农村部规划设计研究院,北京 100125;2.农业农村部农业设施结构设计与智能建造重点实验室,北京 100125) |
|
| 摘要: |
| 日光温室骨架曲线形式直接影响前屋面采光和力学承载性能，为研究设计出合理骨架曲线形式，基于现有骨架的设计特点、应用情况等，对日光温室骨架合理曲线的数值化构建和表达方法进行研究。当屋脊点位置、最低作业高度、前屋面屋脊处的坡度以及底脚部位的坡度确定时，该方法可直接给出骨架曲线的数值化表达式，通过规范要求可筛选出合格的骨架曲线形式。提出了双抛物线骨架曲线，选取北京、沈阳、银川3个城市，对抛物线、椭圆面、双抛物线、幂函数、双圆5种骨架曲线形式的日光温室进行采光性能模拟。结果表明：1）5种骨架曲线形式下冬至日日累计太阳辐射量之间的最大差值为6.31%，双抛物线作为骨架曲线形式在采光性能上是可靠的；2）当前屋面水平投影为6~14 m、最低作业高度为1~1.8 m时，均可构造出既符合规范要求又符合工程实际的双抛物线曲线。 |
| 关键词: 日光温室 骨架曲线 数值化表达 设计方法 |
| DOI：10.11841/j.issn.1007-4333.2024.07.15 |
| 投稿时间：2023-11-21 |
| 基金项目:河北省重点研发计划资助项目（22327214D）；农业农村部规划设计研究院自主研发项目（SP202101） |
|
| A numerical expression method of solar greenhouse skeleton reasonable curve |
|
QI Fei1,2, HE Fen1,2*, ZHAO Yunyun1,2, HOU Yong1,2, DING Xiaoming1,2
|
| (1.Academy of Agricultural Planning and Engineering， Ministry of Agriculture and Rural Affairs， Beijing 100125， China;2.Key Laboratory of Farm Building in Structure and Intelligent Construction of Ministry of Agriculture and Rural Affairs， Beijing 100125， China) |
| Abstract: |
| The skeleton curve form of solar greenhouse directly affects the front roof lighting and mechanical bearing performance. In order to study and design a reasonable skeleton curve form of solar greenhouse， based on the design characteristics and application situation of the existing skeleton， the numerical construction and expression methods of the reasonable curve of the solar greenhouse skeleton were studied. When the position of the ridge point， the lowest working height， the slope at the front roof ridge， and the slope at the foot are determined， this method can directly provide a numerical expression for the skeleton curve， and qualified skeleton curve forms can be screened out through regulatory requirements. A double parabolic skeleton curve was proposed in this study， and three cities， Beijing， Shenyang and Yinchuan， were selected to simulate the lighting performance of solar greenhouses with five skeleton curve forms， which were parabolic， elliptical， double parabolic， power function and double circle. The results showed that： 1） The maximum difference between the cumulative solar radiation on the winter solstice day under five different skeleton curve forms was 6.31%， and the double parabola as the skeleton curve form was reliable in terms of lighting performance； 2） When the current horizontal projection of the roof is 6 to 14 m and the minimum working height is 1 to 1.8 m， a double parabolic curve that meets both the regulatory requirements and the actual engineering situation can be constructed. |
| Key words: solar greenhouse skeleton curve numerical expression design method |
