Experimental and Numerical Investigation of the Effect of Uplift and Lateral Combined Loading on the Bearing Capacity of Piles

doi:10.19721/j.cnki.1001-7372.2021.03.007

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	Experimental and Numerical Investigation of the Effect of Uplift and Lateral Combined Loading on the Bearing Capacity of Piles
	Zhou, Jun-Peng 1,2; Huang, Xue-Feng 1,3; Zhang, Ji-Lu 4; Wei, Lin-Hui 4; Yuan, Jun 5; Wang, Xue-Ming 5; Liu, Yong-Hong 6
刊名	Zhongguo Gonglu Xuebao/China Journal of Highway and Transport
	2021-03-01
卷号	34 期号:3 页码:113-123
关键词	Bearing capacity Failure (mechanical) Oil well drilling equipment Pressure distribution Retaining walls Soils Combined loading Failure mechanism Field experiment Lateral bearing capacity Lateral directions Numerical investigations Rigid rotation Uplift bearing capacity
ISSN号	1001-7372
DOI	10.19721/j.cnki.1001-7372.2021.03.007
英文摘要	The uplift and lateral bearing capacity of piles are commonly determined independently irregardless of their interactions in practice; however, this does not reflect their reality. The bearing capacity of piles under uplift and lateral combined loading was studied through field experiments and numerical simulation. The results show that the influence of the combined loading on the bearing capacity of piles is correlated closely related to the ratio of uplift to lateral load. In this study, the combined loading has little influence on the lateral bearing capacity when the ratio is less than 2; however, the lateral bearing capacity is obviously weakened when the ratio is greater than 2 and the degree of weakening increases with the increase in ratio. The uplift load displacement curve under the combined loading coincides with that under the uplift load. However, when the loading ratio is relatively small, the piles reach the failure standard earlier in the lateral direction, which leads to the failure of fully exerting the uplift bearing capacity. The lateral bearing capacity is weakened under the combined loading because the pile drives the soil around it to pull up in unison, which leads to a decrease in the proportion coefficient of soil resistance and the acceleration of the pile bending moment. Under the combined loading, the vertical earth pressure on the compression side increases due to the compaction of soil and the pressure on the tensile side decreases due to the separation of pile and soil for the upper part due to the lateral load. However, the vertical earth pressure on the lower part of the pile shows the opposite trend due to the rigid rotation of the pile. The soil cracks in the failure area are distributed in a fan shape under combined loading, where range, distribution, and failure mechanism are significantly different from those under uplift and lateral load. The influence of combined loading on the bearing capacity of piles is objective and cannot be ignored. © 2021, Editorial Department of China Journal of Highway and Transport. All right reserved.
语种	中文
出版者	Chang'an University
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148364]
专题	兰州理工大学
作者单位	1.Department of Military Installations, Army Logistical Academy of PLA, Chongqing; 401311, China; 2.Chongqing Key Laboratory of Geomechanics & Geoenvironment Protection, Chongqing; 401311, China; 3.School of Hohai, Chongqing Jiaotong University, Chongqing; 400074, China; 4.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; 730050, China; 5.Northwest Electric Power Design Institute Co. Ltd., Xi'an; 710075, China; 6.The 96784 Unit of Chinese PLA, Luoyang; 471300, China
推荐引用方式 GB/T 7714	Zhou, Jun-Peng,Huang, Xue-Feng,Zhang, Ji-Lu,et al. Experimental and Numerical Investigation of the Effect of Uplift and Lateral Combined Loading on the Bearing Capacity of Piles[J]. Zhongguo Gonglu Xuebao/China Journal of Highway and Transport,2021,34(3):113-123.
APA	Zhou, Jun-Peng.,Huang, Xue-Feng.,Zhang, Ji-Lu.,Wei, Lin-Hui.,Yuan, Jun.,...&Liu, Yong-Hong.(2021).Experimental and Numerical Investigation of the Effect of Uplift and Lateral Combined Loading on the Bearing Capacity of Piles.Zhongguo Gonglu Xuebao/China Journal of Highway and Transport,34(3),113-123.
MLA	Zhou, Jun-Peng,et al."Experimental and Numerical Investigation of the Effect of Uplift and Lateral Combined Loading on the Bearing Capacity of Piles".Zhongguo Gonglu Xuebao/China Journal of Highway and Transport 34.3(2021):113-123.