[1]李 志,马 强,胡 刚,等.武神公路植物根系抗拉特性试验研究[J].湖北工业大学学报,2019,34(1):1-6+11.
　LI Zhi,MA Qiang,HU Gang,et al.Test on Tensile Properties of Plant Roots along Wudang Mountain Shennongjia Highway[J].,2019,34(1):1-6+11.
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武神公路植物根系抗拉特性试验研究()
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《湖北工业大学学报》[ISSN:1003-4684/CN:42-1752/Z]

卷:
34卷
期数:
2019年第1期
页码:
1-6+11
栏目:
湖北工业大学学报
出版日期:
2019-02-28

文章信息/Info

Title:
Test on Tensile Properties of Plant Roots along Wudang Mountain Shennongjia Highway
文章编号:
1003-4684(2019)01-0001-06
作者:
李  志1;  马  强1;  胡  刚2;  董核铭2;  李国政2
1 湖北工业大学土木建筑与环境学院， 湖北 武汉 430068；
2 十堰市交通投资有限公司， 湖北 十堰 442000
Author(s):
LI Zhi1;  MA Qiang1; HU Gang2; DONG Heming2; LI Guozheng2
1 School of Civil Engin.，Architecture and Environment，Hubei Univ. of Tech.，Wuhan 430068，China；
2 Shiyan Transportation Investment co. LTD., Shiyan 442000, China
关键词:
Keywords:
plant roots;  peak tensile force;  tensile strength;  pull test;  data fitting
分类号:
S154.4
文献标志码:
A
摘要:
为探究武（当山）－神（农架）公路植物根系的抗拉特性，在公路沿线选择4种灌木，2种乔木和2种草本植物根系作为试验材料，利用万能试验机得到根系拉力和时间关系曲线，确定了各植物根系拉断时的峰值拉力，测得拉断时根系断口处的直径，计算出植物根系的抗拉强度，并通过对数函数和幂函数拟合得到了各种植物根系拉力峰值、抗拉强度与根系直径之间的拟合关系。结果表明：植物根系的拉力峰值随直径的增加而增加；除马桑、野漆树外，其他植物根系的抗拉强度随着直径的增加而降低；对数函数和幂函数均能够较好描述植物根系的抗拉强度与直径之间的关系；乔、灌、草本植物根的抗拉强度比较接近，其中草本根系平均抗拉强度最大，灌木根系的最小。探明植物根系抗拉特性，可为边坡植被护坡工程构造设计及植被类型选择提供可靠的参考。
Abstract:
To test tensile properties of plant roots along Wudang mountain-Shennongjia highway, the roots of four kinds of shrubs, two kinds of trees and two kinds of herb were chosen along the highway for mechanical test. The variation curve of peak tensile forces of root with time was obtained using a universal testing machine, and the peak tensile forces of each plant roots were obtained. The diameters of roots in the fracture were measured, the tensile strengths of plant roots were calculated, and the relationship between the peak tensile forces and the diameters of root, the relationship between tensile strengths and diameters of roots were deduced by logarithmic function and exponential function fitting. The results show that the peak tensile forces of roots increase with the increase of diameters, the tensile strengths of roots decrease with the increase of diameters except Coriaria nepalensis and Rhus sylvestris Sieb. & Zucc. Both the logarithmic function and the power function can better describe the relationship between the tensile strength and diameter of the plant roots. The tensile strength of roots of arbor, irrigation and herbaceous plants is relatively close, among which the herb roots have the highest average tensile strength and the shrub roots are the smallest. Exploring the tensile characteristics of plant roots can provide a reliable reference for the structural design of vegetation slope protection and the selection of vegetation types.

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备注/Memo

备注/Memo:
［收稿日期］ 2018-03-20
［基金项目］ 国家自然科学基金（51678223）；湖北省教育厅重点项目（D20171402）；湖北工业大学绿色工业科技引领计划项目（YXQN2017001）
［第一作者］ 李    志（1994-），男，安徽界首人，湖北工业大学硕士研究生，研究方向为环境岩土工程
［通信作者］ 马    强（1983-），男，湖北十堰人，工学博士，湖北工业大学副教授，研究方向为土体与结构相互作用及环境岩土
更新日期/Last Update: 2019-11-18