Bearing Capacity of Karst Cave Roof under Pile Foundation Load Using Limit Analysis

doi:10.3390/app13127053

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Bearing Capacity of Karst Cave Roof under Pile Foundation Load Using Limit Analysis
	Li, Ze ; Lu, Kaiyu ; Liu, Wenlian ; Wang HB(王和博); Peng, Pu ; Xu, Hanhua
刊名	APPLIED SCIENCES-BASEL ; 12
	2023-06
卷号	13 页码:7053
关键词	karst foundation bearing capacity limit analysis upper-bound method nonlinear mathematical programming
DOI	10.3390/app13127053
英文摘要	Reducing the computational workload by simplifying the analysis of karst foundations into a plane strain problem can yield significant advantages. Yet, such an approach fails in reproducing the engineering situation in a rigorous manner. In this regard, this paper proposes an upper-bound method that can effectively analyze the bearing capacity of three-dimensional karst foundations. This method is utilized to investigate the impact of various pile diameters, the ratio of roof thickness to pile diameter, and the ratio of cave width to pile diameter on the stability of karst foundations. The validity of this method is established through an illustrative example. The outcomes illustrate that when subjected to both tensile and compressive horizontal stresses if the maximum horizontal stress surpasses the tensile strength of the rock mass, the roof rock mass may suffer damage. Increasing the ratio of roof thickness to pile diameter can bring down the horizontal stress value. The stability factor is largely influenced by the ratio of roof thickness to pile diameter. The most prominent growth trend of the stability factor is observed when the ratio is less than 3. If the ratio of the roof thickness to pile diameter exceeds 3, the prediction of the bearing capacity estimation for the karst foundation in three-dimensional circumstances is more conservative than that in two-dimensional circumstances.
分类号	二类
WOS研究方向	Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
语种	英语
WOS记录号	WOS:001014032400001
资助机构	National Natural Science Foundation of China [12162018, 12262016] ; Research Foundation of Science and technology plan project of Yunnan Provincial [202201AT070283, 202305AD160064]
其他责任者	Lu, KY (corresponding author), Kunming Univ Sci & Technol, Fac Civil Engn & Mech, Kunming 650500, Peoples R China.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92383]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	1.{Xu Hanhua} Yunnan Key Lab Geotech Engn & Geol Hazards Kunming 650051 Peoples R China 2.{Wang Hebo} Chinese Acad Sci Inst Mech Beijing 100190 Peoples R China 3.{Liu Wenlian} China Nonferrous Met Ind Co Ltd Kunming Prospecting Design Inst Kunming 650051 Peoples R China 4.{Li Ze, Lu Kaiyu, Peng Pu} Kunming Univ Sci & Technol Fac Civil Engn & Mech Kunming 650500 Peoples R China
推荐引用方式 GB/T 7714	Li, Ze,Lu, Kaiyu,Liu, Wenlian,et al. Bearing Capacity of Karst Cave Roof under Pile Foundation Load Using Limit Analysis[J]. APPLIED SCIENCES-BASEL, 12,2023,13:7053.
APA	Li, Ze,Lu, Kaiyu,Liu, Wenlian,王和博,Peng, Pu,&Xu, Hanhua.(2023).Bearing Capacity of Karst Cave Roof under Pile Foundation Load Using Limit Analysis.APPLIED SCIENCES-BASEL,13,7053.
MLA	Li, Ze,et al."Bearing Capacity of Karst Cave Roof under Pile Foundation Load Using Limit Analysis".APPLIED SCIENCES-BASEL 13(2023):7053.