静压桩桩_土界面滑动摩擦机制研究_胡永强.pdfVIP

静压桩桩_土界面滑动摩擦机制研究_胡永强.pdf

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静压桩桩_土界面滑动摩擦机制研究_胡永强

36 5 Vol.36 No.5 2015 5 Rock and Soil Mechanics May 2015 DOI 10.16285/j.rsm.2015.05.007 1, 2 3, 4 5 1. 510275 2.510006 3. 510275 4. 510275 5. 528300 TU 473 A 1000 7598 (2015) 05 1288 07 Mechanism of sliding friction at pile-soil interface of jacked pile HU Yong-qiang1, 2, TANG Lian-sheng3, 4, LI Zhao-yuan5 (1. Engineering School, Sun Yat-sen University, Guangzhou, Guangdong 510275, China; 2. School of Civil Engineering, Guangzhou University, Guangzhou, Guangdong 510006, China; 3. Department of Earth Science, Sun Yat-sen University, Guangzhou, Guangdong 510275, China; 4. Guangdong Provincial Key Laboratory of Mineral Resources Geological Processes, Guangzhou, Guangdong 510275, China; 5. Guangdong Yongji Building Foundation Co., Ltd., Shunde, Guangdong 528300, China) Abstract: The essence of shaft friction of jacked pile is friction at the pile-soil interface; but the mature tribology theory has not been used to study the mechanism of shaft friction yet. In this paper, friction mechanism of adhesion and deformation in tribology is introduced systematically. Using it to explain the sliding friction mechanism at the pile-soil interface of jacked pile, a good results is obtained. It provides a new approach to research the shaft friction of pile. The study suggests that unlubricated friction between jacked pile and soil is external friction, the sliding friction between jacked pile and soil is lub

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