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| 大跨度异形屋面法向量的近似计算方法 | |
| 引用本文： | 王新荣,樊友川,田连英.大跨度异形屋面法向量的近似计算方法[J].低温建筑技术,2012,34(4):39-40,46. |
| 作者姓名： | 王新荣 樊友川 田连英 |
| 作者单位： | 1. 同济大学土木工程学院,上海,200092 2. 中国电力工程顾问集团中南电力设计院,武汉,430071 3. 中南大学土木工程学院,长沙,410075 |
| 摘 要： | 首先由节点静力平衡获得了给定的大跨度异形屋面法向量的近似计算方法,并针对一球形壳面,将文中方法得到的法向向量计算值与理论值进行对比,验证了文中近似计算方法的有效性与精度,最后以一典型的大跨度波浪形曲面屋盖结构为工程背景,详细介绍了文中方法在工程结构风振计算过程中的应用。结果表明,通过文中方法可方便而有效地获得任意异形曲面屋盖节点的法向量近似值,它简单实用,具有良好的精度。 |
| 关 键 词： | 大跨度异形屋面 法向量 近似计算方法 |
APPROXIMATE COMPUTATION METHOD OF NORMAL VECTORS FOR A LARGE-SPAN SPECIAL SHAPED ROOF |
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| WANG Xin-rong , FAN You-chuan , TIAN Lian-ying.APPROXIMATE COMPUTATION METHOD OF NORMAL VECTORS FOR A LARGE-SPAN SPECIAL SHAPED ROOF[J].Low Temperature Architecture Technology,2012,34(4):39-40,46. | |
| Authors: | WANG Xin-rong FAN You-chuan TIAN Lian-ying |
| Affiliation: | 1.School of Civil Engineering,Tongji University,Shanghai 200092,China; 2.Central Southern China Electric Power Design Institute of China Power Engi.Consulting Group, Wuhan 430071,China;3.School of Civil Engi.,Central South Univ.,Changsha 410075,China) |
| Abstract: | An approximate method calculating the normal vectors for a given large-span special shaped roof is firstly derived based on the static equilibrium at its nodes.Then the normal vectors calculated by the proposed method are compared with theoretical ones for a spherical shell surface,so the effectiveness and precision of the approximate computation method have been validated.Finally,the application of the proposed method in wind-induced vibration computation for engineering structures is presented in detail by taking a typical large-span wavy shaped roof for engineering background.The results show that the approximate normal vectors of an arbitrary special shaped roof can be obtained easily and effectively by the proposed method.Besides,its precision meets the engineering demand. |
| Keywords: | large-span special shaped roof normal vector approximate computation method |
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