A dynamic analysis of windthrow of trees

被引：31

作者：

England, AH ^{[1
]}

Baker, CJ

Saunderson, SET

机构：

[1] Univ Nottingham, Div Theoret Mech, Nottingham NG7 2RD, England

[2] Univ Birmingham, Sch Civil Engn, Birmingham B15 2TT, W Midlands, England

来源：

FORESTRY | 2000年 / 73卷 / 03期

关键词：

D O I：

10.1093/forestry/73.3.225

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

This paper considers the dynamics of the tipping of a tree due to a gust of wind superimposed on a steady wind. The resistance of the root system to the rotational motion of the tree is known from tree-pulling experiments. A gust of wind generates an impulsive load on the system and hence the dynamics of the tree may be modelled. An empirical formula which relates the speed of a gust of wind and its duration to the mean wind speed is used to determine the mean wind speed necessary to overturn a tree. Realistic mean wind speeds are found for trees such as Sitka spruce.

引用

页码：225 / 237

页数：13

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