CHEN Zhi-xiong, LI Kang-yin, WANG Cheng-long, DING Xuan-ming, JIANG Xue-feng, CHEN Yu-min. SHAKING TABLE TESTS ON RIGID-DRAINAGE PIPE PILE GROUPS AT LIQUEFIED LATERALLY SPREADING SITE[J]. Engineering Mechanics, 2022, 39(9): 141-152. DOI: 10.6052/j.issn.1000-4750.2021.05.0374
Citation: CHEN Zhi-xiong, LI Kang-yin, WANG Cheng-long, DING Xuan-ming, JIANG Xue-feng, CHEN Yu-min. SHAKING TABLE TESTS ON RIGID-DRAINAGE PIPE PILE GROUPS AT LIQUEFIED LATERALLY SPREADING SITE[J]. Engineering Mechanics, 2022, 39(9): 141-152. DOI: 10.6052/j.issn.1000-4750.2021.05.0374

SHAKING TABLE TESTS ON RIGID-DRAINAGE PIPE PILE GROUPS AT LIQUEFIED LATERALLY SPREADING SITE

  • The lateral expansion of soil liquefaction under the action of an earthquake may well be fatally destructive to foundations, especially for the piles of building structures and bridges, thus, it is of urge demand to reduce and to eliminate the threaten of soil liquefaction and expansion to the structure safety. The rigid drainage pipe pile is composed of a circular hollow rigid pile and a drainage body, which enables the large bearing capacity and the favorable drainage characteristics. However, the research on the anti-liquefaction performance of rigid drainage pipe pile groups is still limited. In this study, a series of shaking table tests on rigid drainage pipe piles and on ordinary piles under vertical loads were carried out, and the dynamic responses of excess pore pressure ratios, of accelerations, of average settlements, of cap displacements, of quay wall displacements and of pile bending moments were comparatively analyzed. The results show that compared with the ordinary pile model, the rigid drainage pipe pile foundation the excess pore pressure, pile body bending moment, foundation settlement, cap displacement, and quay wall displacement of rigid drainage pipe pile foundation are obviously reduced, while the acceleration is increased, which fully shows that the anti-liquefaction effect of rigid drainage pipe pile is remarkable.
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