Mechanical behaviors and analysis of a new supporting structure of deep foundation pit

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	Mechanical behaviors and analysis of a new supporting structure of deep foundation pit
	Dong, Jianhua 1,2; Yuan, Fanglong 1,2,3; Dong, Xuguang 1,2
刊名	Tumu Gongcheng Xuebao/China Civil Engineering Journal
	2017-10-01
卷号	50 期号:10 页码:99-110
关键词	Bearing capacity Bearings (machine parts) Finite element method Infill drilling Slope stability Software testing Tires Cylindrical cavity expansion Horizontal displacements Mechanical behavior Stability of foundation pit Ultimate bearing capacity Ultimate uplift bearing capacity Uplift bearing capacity Working mechanisms
ISSN号	1000131X
英文摘要	Towards the challenging problems encountered during excavating and supporting process of deep foundation pit, a new supporting structure with the self-drilling tire tandem anchor is proposed, and then the composition and working mechanism of the structure are investigated in detail. Based on the theory of cylindrical cavity expansion, the calculation formula of uplift bearing capacity and critical spacing of tires are derived. The supporting characteristics and uplift mechanism of the new supporting structure is simulated by using the finite element software ADINA, and then the field uplift test is carried out. The comparison between theoretical results and simulation results shows that: (1) The theoretical calculated values of ultimate bearing capacity basically agree with the simulated values and experimental values, validating the rationality of theoretical analysis and numerical simulation. (2) For the tire segment, the distribution of axial force of the self-drilling tire tandem anchor is greatly improved, exhibiting a `saltation' with a "jagged" shape. (3) Compared with the ordinary framed anchor bolt system, the horizontal displacement of slope can be greatly reduced by using the framed self-drilling tire tandem anchor, which shall be beneficial to the stability of foundation pit. (4) For the self-drilling tire tandem anchor, there exist positive correlations between the ultimate uplift bearing capacity or ultimate uplift displacement and the radial strain of tire. © 2017, Editorial Office of China Civil Engineering Journal. All right reserved.
语种	中文
出版者	Chinese Society of Civil Engineering
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150204]
专题	土木工程学院
作者单位	1.Western Engineering Research Center of Disaster Mitigation in Civil Engineering of the Ministry of Education, Lanzhou; 730050, China; 2.Lanzhou University of Technology, Lanzhou; 730050, China; 3.CCCC First Harbor Engineering Company Ltd., Tianjin; 300222, China
推荐引用方式 GB/T 7714	Dong, Jianhua,Yuan, Fanglong,Dong, Xuguang. Mechanical behaviors and analysis of a new supporting structure of deep foundation pit[J]. Tumu Gongcheng Xuebao/China Civil Engineering Journal,2017,50(10):99-110.
APA	Dong, Jianhua,Yuan, Fanglong,&Dong, Xuguang.(2017).Mechanical behaviors and analysis of a new supporting structure of deep foundation pit.Tumu Gongcheng Xuebao/China Civil Engineering Journal,50(10),99-110.
MLA	Dong, Jianhua,et al."Mechanical behaviors and analysis of a new supporting structure of deep foundation pit".Tumu Gongcheng Xuebao/China Civil Engineering Journal 50.10(2017):99-110.