均匀拌合式玻璃纤维加筋红土压缩试验研究  

Experimental Study on Compression of Uniformly Mixing Glass Fiber Reinforced Laterite

在线阅读下载全文

作  者:张安邦 王丽娜 金克盛[4] 田福昌 ZHANG Anbang;WANG Li na;JIN Kesheng;TIAN Fuchang(State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation,Tianjin University,Tianjin 300350,China;School of Civil Engineering,Tianjin University,Tianjin 300350,China;North China Municipal Engineering Design&Research Institute Co.,Ltd.,Tianjin 300074,China;School of Electric Power Engineering,Kunming University of Science and Technology,Kunming 650500,Yunnan,China)

机构地区:[1]天津大学水利工程智能建设与运维全国重点实验室,天津300350 [2]天津大学建筑工程学院,天津300350 [3]中国市政工程华北设计研究总院有限公司,天津300074 [4]昆明理工大学电力工程学院,云南昆明650500

出  处:《水力发电》2024年第11期100-105,共6页Water Power

基  金:国家自然科学基金资助项目(52309103);水利部堤防安全与病害防治工程技术研究中心开放课题基金资助项目(LSD-P202201);科技部重点领域创新团队计划资助项目(2014RA4031)。

摘  要:为更好指导玻璃纤维加筋红土使用,试验研究纤维长度和纤维质量加筋率对均匀拌合式玻璃纤维加筋红土压缩特性的影响,寻找压缩系数最小的组合工况并分析其增强机理。研究结果表明:向昆明红土中分别均匀拌合入质量加筋率为0.1%、0.2%、0.3%、0.4%、0.5%和纤维长度4、8、12、16、20 mm的玻璃纤维,各工况加筋红土压缩系数均低于素土,压缩系数最小工况为纤维长度8 mm、质量加筋率0.4%;质量加筋率和纤维长度对加筋红土压缩系数均有影响,但纤维长度是加筋红土压缩系数的主要影响因素,直接决定压缩系数分布区间,各质量加筋率下加筋红土压缩系数最小的纤维长度均为8 mm;不同质量加筋率下红土压缩系数均随纤维长度增长呈现一致的“下降—上升—下降—上升”规律;玻璃纤维加筋红土抗变形能力增强机理主要体现在摩擦接触作用、三维网格结构交织作用和玻璃纤维支撑作用。In order to better guide the use of glass fiber reinforced laterite,the effects of fiber length and fiber mass reinforcement rate on the compression characteristics of evenly mixed glass fiber reinforced laterite are studied,and the combination conditions with the smallest compression coefficient are found and the strengthening mechanism is analyzed.The results show that:(a)when the glass fibers with mass reinforcement rate of 0.1%,0.2%,0.3%,0.4%,and 0.5%,and fiber length of 4 mm,8 mm,12 mm,16 mm and 20 mm are uniformly mixed into Kunming laterite,the compression coefficient of reinforced laterite is lower than that of plain soil under all conditions,and the minimum compression coefficient is appeared in the reinforcement laterite added with 8 mm length and 0.4%mass reinforcement rate glass fiber;(b)both the mass reinforcement rate and the fiber length have an effect on the compression coefficient of the reinforced laterite,but the fiber length is the main factor affecting the compression coefficient of the reinforced laterite and directly determines the distribution range of the compression coefficient,and the fiber length with the smallest compression coefficient of the reinforced laterite under each mass reinforcement rate is 8 mm;(c)the compression coefficient of laterite with different mass reinforcement rates shows a consistent“down-rising-down-rising”rule with the increase of fiber length;and(d)the mechanism of enhancing the deformation resistance of glass fiber reinforced laterite is mainly reflected in the frictional contact,three-dimensional mesh structure interweaving and glass fiber support.

关 键 词:玻璃纤维 加筋红土 均匀拌合式 压缩系数 增强机理 

分 类 号:TU443[建筑科学—岩土工程]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象