新型护坡植被混凝土强度特性的试验研究  

Research on the Strength Characteristics of a Novel Vegetated Concrete for Slope Protection

作　　者：刘顺青[1,2,3,4] 王旭畅 孙宇赫 文川 LIUShun-qingg;WANG Xu-chang;SUNYu-he;WEN Chuan(School of Civil Engineering and Architecture,Jiangsu University of Science and Technology,Zhenjiang 212100,China;Key Laboratory of Geohazard Prevention of Hilly Mountains,Ministry of Natural Resources,Fuzhou 350002,China;Fujian Key Laboratory of Geohazard Prevention,Fuzhou 350002,China;Jiangsu Province Engineering Research Center of Geoenvironmental Disaster Prevention and Remediation,Zhenjiang 212100,China)

机构地区：[1]江苏科技大学土木工程与建筑学院,镇江市212100 [2]自然资源部丘陵山地地质灾害防治重点实验室,福州市350002 [3]福建省地质灾害重点实验室,福州市350002 [4]江苏省地质环境灾害防治及修复工程研究中心,镇江市212100

出　　处：《公路》2024年第10期390-397,共8页Highway

基　　金：国家自然科学基金项目,项目编号42007263;自然资源部丘陵山地地质灾害防治重点实验室(福建省地质灾害重点实验室)开放基金资助项目,项目编号FJKLGH2023K002。

摘　　要：针对山区公路建设过程中产生的裸露高陡岩质边坡,研发了一种以瓜尔豆胶和椰纤维为基材改良剂的新型护坡植被混凝土,在保证水泥含量不变的情况下,对不同掺量瓜尔豆胶及椰纤维植被混凝土的基材进行直剪试验,分析不同掺量的改良材料对其强度特性的影响规律。结果表明,椰纤维的加筋作用对基材的抗剪强度有明显地提升,而瓜尔豆胶与水分结合形成的水凝胶对基材抗剪强度的影响不大;随着椰纤维和瓜尔豆胶的掺入,基材的黏聚力都呈现先增大后减小的变化趋势;随着椰纤维掺量的增加基材的内摩擦角逐渐增大,而随着瓜尔豆胶掺量的增加基材的内摩擦角逐渐减小,但此时内摩擦角总体上变化不大。A novel slope protection vegetative concrete with guar gum and coconut fiber as the base material improver is developed for exposed high steep rocky slopes generated during highway construction in mountainous areas.Under the condition that the cement content remains unchanged,direct shear tests are conducted on the base material of vegetation concrete with different amounts of guar gum and coconut fiber to analyze the influence law of different amounts of improver materials on its strength properties.The results show that the reinforcing effect of the coconut fibers has a significant increase in the shear strength of the base material,while the hydrogel formed by the combination of guar gum and water has minor effect on the shear strength of the base material.With the incorporation of fiber and guar gum,the cohesion of the base material tends to increase and then decrease.With the increase of coconut fiber content,the internal friction angle of the substrate gradually increases,while with the increase of guar gum content,the internal friction angle of the substrate gradually decreases,but the overall change of internal friction angle is not significant at this time.

关 键 词：植被混凝土 岩质边坡 瓜尔豆胶 椰纤维 抗剪强度 

分 类 号：U417.1[交通运输工程—道路与铁道工程] U414.1