IGGCAS OpenIR  > 页岩气与地质工程院重点实验室
An Experimental Study of Horizontal Bearing Capacity of Vertical Steel Floral Tube Micropiles with Double Grouting
Wang, Kaiyang1,2,3,4,5; Shang, Yanjun1,2,3
2018
发表期刊ADVANCES IN CIVIL ENGINEERING
ISSN1687-8086
页码11
摘要This paper examines the performance of a novel technology, vertical steel floral tube micropiles with double grouting. It is the combination of micropile technology and double grouting technology. A large-scale model tank was applied to impart horizontal hearing capacity, and the slope soil pressure and flexural performance of the micropile were investigated under four experimental conditions. The peak grouting pressure during the double grouting process was defined as the fracturing pressure of the double grouting, and it was positively correlated to the interval time between first grouting and secondary grouting. Compared with traditional grouting, double grouting increased the horizontal hearing capacity of the single micropile with the vertical steel floral tube by 24.42%. The horizontal hearing capacity was also 20.25% higher for the structure with three micropiles, compared with a 3 fold value of horizontal sliding resistance. In the test, the maximum bending moment acting on the pile above the sliding surface was located 2.0-2.5 in away from the pile top, and the largest negative bending moment acting on the pile below the slip surface was located 4.0 m away from the pile top. The ultimate bending moment of the single pile increased by 12.8 kN.m with double grouting, and the bending resistance increased by 96.2%. The experimental results showed that the double grouting technology significantly improved the horizontal hearing capacity of the micropile with the steel floral tube, and the soil reinforcement performance between piles was more pronounced. Also, the shear capacity and the flexural capacity were significantly improved compared with the original technology.
DOI10.1155/2018/8187693
资助者National Natural Science Foundation of China ; National Natural Science Foundation of China ; Opening Research Fund of the National Engineering Laboratory for Surface Transportation Weather Impacts Prevention ; Opening Research Fund of the National Engineering Laboratory for Surface Transportation Weather Impacts Prevention ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Opening Research Fund of the National Engineering Laboratory for Surface Transportation Weather Impacts Prevention ; Opening Research Fund of the National Engineering Laboratory for Surface Transportation Weather Impacts Prevention ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Opening Research Fund of the National Engineering Laboratory for Surface Transportation Weather Impacts Prevention ; Opening Research Fund of the National Engineering Laboratory for Surface Transportation Weather Impacts Prevention ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Opening Research Fund of the National Engineering Laboratory for Surface Transportation Weather Impacts Prevention ; Opening Research Fund of the National Engineering Laboratory for Surface Transportation Weather Impacts Prevention
关键词[WOS]BEHAVIOR ; PILE
语种英语
资助项目National Natural Science Foundation of China[41772320] ; National Natural Science Foundation of China[U1402231] ; Opening Research Fund of the National Engineering Laboratory for Surface Transportation Weather Impacts Prevention[NELXX201603]
资助者National Natural Science Foundation of China ; National Natural Science Foundation of China ; Opening Research Fund of the National Engineering Laboratory for Surface Transportation Weather Impacts Prevention ; Opening Research Fund of the National Engineering Laboratory for Surface Transportation Weather Impacts Prevention ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Opening Research Fund of the National Engineering Laboratory for Surface Transportation Weather Impacts Prevention ; Opening Research Fund of the National Engineering Laboratory for Surface Transportation Weather Impacts Prevention ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Opening Research Fund of the National Engineering Laboratory for Surface Transportation Weather Impacts Prevention ; Opening Research Fund of the National Engineering Laboratory for Surface Transportation Weather Impacts Prevention ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Opening Research Fund of the National Engineering Laboratory for Surface Transportation Weather Impacts Prevention ; Opening Research Fund of the National Engineering Laboratory for Surface Transportation Weather Impacts Prevention
WOS研究方向Construction & Building Technology ; Engineering
WOS类目Construction & Building Technology ; Engineering, Civil
WOS记录号WOS:000452986700001
出版者HINDAWI LTD
引用统计
文献类型期刊论文
条目标识符http://ir.iggcas.ac.cn/handle/132A11/90280
专题页岩气与地质工程院重点实验室
通讯作者Wang, Kaiyang
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
4.Broadvis Engn Consultants Yunnan Prov, Kunming 650011, Yunnan, Peoples R China
5.Natl Engn Lab Surface Transportat Weather Impacts, Kunming 650011, Yunnan, Peoples R China
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GB/T 7714
Wang, Kaiyang,Shang, Yanjun. An Experimental Study of Horizontal Bearing Capacity of Vertical Steel Floral Tube Micropiles with Double Grouting[J]. ADVANCES IN CIVIL ENGINEERING,2018:11.
APA Wang, Kaiyang,&Shang, Yanjun.(2018).An Experimental Study of Horizontal Bearing Capacity of Vertical Steel Floral Tube Micropiles with Double Grouting.ADVANCES IN CIVIL ENGINEERING,11.
MLA Wang, Kaiyang,et al."An Experimental Study of Horizontal Bearing Capacity of Vertical Steel Floral Tube Micropiles with Double Grouting".ADVANCES IN CIVIL ENGINEERING (2018):11.
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