耐風特性を考慮した斜面上緑化樹木の安定性に関する研究
考虑抗风特性的边坡绿化树木稳定性研究
基本信息
- 批准号:07660192
- 负责人:
- 金额:$ 1.6万
- 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:1995
- 资助国家:日本
- 起止时间:1995 至 1997
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The revegitation tree is required in place of to early restore the natural environment in the development of large area. But the influence of wind damage does not make clear for the stand on slope in this project. The object of this study analysis the total mechanism of sturcture with wind resistance for tree which consists of roots, stem, branches, and crown, and construct the method used in design of revegetation tree based on the model of uprooting and stem breakage. Fundamental data required this analysis is strength of roots, Young's modulus of stands, characteristics of vibration of stands and branches.The results for 3 years studying summarize as following. First, Results of uprooting test by applying tensile force to lower point of stands were considered from the process of the resistance moment for tree stump. And the model of resistance moment was constructed for uprooting in the case of this force acting to stand. Furthermore, simplified model was made in case of no obtaining the root system of tree stump. Second, the tensile test of roots was made for 8 species of hardwood and conifer. The rupture load varied as the second power of the diameter in the part of rupture. And root strength was as the xylem of stem. Third, The results of past uprooting test were arranded. And it was made clear that the maximum resistance moment of uprooting was proporting to the third power of the breast diameter of stand. Forth, Young's modulus of stand was measured, the value of cryptomeria japonica was about 80tf/m^2, and the value of chamecyparis obtusa was about 100tf/m^2. The variation of tree by high wind was measured. The main period of vibration was 0.66Hz as same as periods of wind pressure in this case.
大面积开发需要尽快恢复自然环境,需要重新植树造林。但本工程中边坡支架风害的影响并未明确。本研究的目的是分析树木由根、茎、枝、冠组成的抗风结构的总体机理,并构建基于连根拔干和断茎模型的植被恢复树木设计方法。分析所需的基本数据是根系强度、林分杨氏模量、林分和枝条的振动特性。三年来的研究结果总结如下。首先,从树桩抵抗力矩的过程中考虑对立柱下部施加拉力的拔起试验的结果。并建立了在该力作用下的立起时的抵抗力矩模型。此外,在无法获取树桩根系的情况下,建立了简化模型。其次,对8种阔叶树和针叶树进行了根系拉伸试验。断裂载荷随着断裂部分的直径的二次方而变化。根的强度取决于茎的木质部。三、对历次拔除试验结果进行整理。并明确了拔起时的最大阻力矩与林胸直径的三次方成正比。第四,测定杨氏模量,柳杉的值约为80tf/m^2,扁柏的值约为100tf/m^2。测量了强风对树木的影响。主要振动周期为0.66Hz,与本例风压周期相同。
项目成果
期刊论文数量(6)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
米井義晃・野々田稔郎他: "冠雪害における樹冠の力学特性-正法寺山荘跡における調査より-" 中部森林研究. 47. (1998)
Yoshiaki Yonei、Toshiro Nonoda 等人:“雪害造成的树冠的机械特性 - 来自对正法寺山小屋遗址的调查 -”中部森林研究 47。(1998 年)
- DOI:
- 发表时间:
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- 影响因子:0
- 作者:
- 通讯作者:
野々田・林・川辺・本多・小薮: "樹幹引き倒しによる根返りの発生機構" 日本林学会誌. 78・4. 390-397 (1996)
野田、林、川部、本多、小薮:“树干拔除发生的机理”日本林业学会杂志78・4(1996)。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
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野々田 稔郎・林 拙郎 他: "樹幹引き倒しによる根返りの発生機構" 日本林学会誌. 78・4. 390-397 (1996)
Toshio Nonoda、Toshiro Hayashi 等:“树干倒伏引起的生根机制”日本林业学会杂志 78・4(1996 年)。
- DOI:
- 发表时间:
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- 影响因子:0
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- 通讯作者:
Toshirou NONODA,Setsuo HAYASHI,Hiroshi KAWABE,Kiyoshi HONDA,and Kazushi KOYABU: "The mechanism of the tree-uprooting occurred by pulling down a tree" The Japanese Forestry Society. 78(4). 390-397 (1996)
Toshirou NONODA、Setsuo HAYASHI、Hiroshi KAWABE、Kiyoshi HONDA 和 Kazushi KOYABU:“树木连根拔起的机制是通过拉倒树木而发生的”日本林业学会。
- DOI:
- 发表时间:
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- 影响因子:0
- 作者:
- 通讯作者:
米井 義晃・野々田 稔郎 他: "冠雪害における樹冠の力学特性-正法寺山荘跡における調査より-" 中部森林研究. 47. (1998)
Yoshiaki Yonei、Toshiro Nonoda 等人:“雪灾造成的树冠的机械特性 - 来自正法寺山小屋遗址的调查”中部森林研究 47。(1998 年)
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- 影响因子:0
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HAYASHI Setsuo其他文献
HAYASHI Setsuo的其他文献
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{{ truncateString('HAYASHI Setsuo', 18)}}的其他基金
Empirical and analytic study on the influence of forest relating to the scale of slope failure
森林对边坡失稳规模影响的实证分析研究
- 批准号:
19580171 - 财政年份:2007
- 资助金额:
$ 1.6万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
An empirical study of sediment disasters subsequent to earthquake damages
震害泥沙灾害实证研究
- 批准号:
14360085 - 财政年份:2002
- 资助金额:
$ 1.6万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Field study on the hillside disasters triggered by the 921 Chi-chi Earthquake, 1999
1999年921集集地震山坡灾害实地考察
- 批准号:
12575021 - 财政年份:2000
- 资助金额:
$ 1.6万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
The scale of disaster and its prediction by large landslide casued by earthquake around town
城镇周边地震引发特大滑坡灾害规模及预测
- 批准号:
11460071 - 财政年份:1999
- 资助金额:
$ 1.6万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Synthetic study on the hillside disaster and stability of woods-land resulting from Earthquakes
地震引发的山坡灾害与林地稳定性综合研究
- 批准号:
08306008 - 财政年份:1996
- 资助金额:
$ 1.6万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
The causes of forest damage and the process of ruin in this field
森林破坏的原因及破坏过程
- 批准号:
05680364 - 财政年份:1993
- 资助金额:
$ 1.6万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
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The effect of fire on conifer regeneration dynamics of boreal mixedwood stands: the role of exposed mineral soil seedbeds from windthrow and uprooting
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