Windthrow risk diagnosis for park trees based on the drag coefficients of tree crowns and the measurement of tree form
Windthrow risk diagnosis for park trees based on the drag coefficients of tree crowns and the measurement of tree form
批准号:
21580169
负责人:
KOIZUMI Akio
金额:
$2.5万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (C)
财政年份:
2009
资助国家:
日本
项目状态:
已结题
起止时间:
2009 至 2012
中文摘要
探讨了园林树木风灾风险的定量评估方法,提出了一种风灾诊断程序。提出了一种利用实测风速和树干偏折数据估算树木阻力系数的野外试验方法。利用所得到的阻力系数,可以计算出作用在树干和根土板上的力矩与风速的关系。为了评估风摔阻力与茎断裂,一个非破坏性的方法来确定树干横截面的形状。此外,还进行了公园树木的拉拔试验
英文摘要
Methods of quantitative evaluation for windthrow risk of park trees were discussed in order to propose a procedure for windthrow diagnosis. A field test method was developed to evaluate drag coefficients of trees, using measured data of wind speed and stem deflection. The moment acting on stem and root-soil plate can be calculated as a function of wind speed, using the obtained drag coefficients. To evaluate windthrow resistance with respect to stem breakage, a nondestructive method for determining the shape of a trunk cross section was developed. Furthermore, pull-down tests of park trees were conducted
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土壌含水比の変化がカラマツ立木の根鉢 剛性に与える影響
土壤含水量变化对落叶松根球刚性的影响
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
[関矢陽, 佃猛司, 佐々木義久, 小泉章夫]
通讯作者:
小泉章夫
In-situ evaluation for drag coefficients of tree crowns (in Pereira JD ed.Wind Tunnels : Aerodynamics, Models and Experinents)
树冠阻力系数的现场评估(见 Pereira JD 编辑的风洞:空气动力学、模型和实验)
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
[関矢陽,石原亘,小泉章夫,平井卓郎, 佐々木義久,橋本俊市,宮本敏澄, 石原亘,関矢陽,小泉章夫,澤田圭,橋本俊市,宮本敏澄, 関矢陽, 石原亘, 清水美里,小泉章夫,佐々木義久,平井卓郎, Koizumi,A., Akio Koizumi]
通讯作者:
Akio Koizumi
DOI:
10.1007/s10086-011-1174-1
发表时间:
2011
期刊:
J. Wood Science
影响因子:
--
作者:
[Koizumi, A.; Ikeda, K.; Sawata, K.; Hirai, T]
通讯作者:
T
樹木の耐風性診断のための樹幹断面形状の非破壊測定法
诊断树木抗风力的树干断面形状无损测量方法
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
[Watanabe, Y., Hinata, K., Ootsuka Y., Watanabe M., Sasa, K. and T. Koike, 小泉章夫,池田啓輔,佐々木義久]
通讯作者:
小泉章夫,池田啓輔,佐々木義久
ニセアカシアの根返りモーメントの評価試験
刺槐生根时刻评价试验
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
[関矢陽,石原亘,小泉章夫,平井卓郎, 佐々木義久,橋本俊市,宮本敏澄]
通讯作者:
佐々木義久,橋本俊市,宮本敏澄
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