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| Experiment analysis on influence of sand particle size on dynamic response of pile body |
| 1. Faculty of Civil Engineering and Mechanics, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 2. School of Civil Engineering and Architecture, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, China |
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Abstract To investigate the influence of sand particle size on the dynamic response of pile-soil interaction system under impact load, a pile-soil system impact load test device was developed, and the pile-soil system impact tests were carried out with different sand particle sizes. The results show that when the pile diameter is constant, the peak acceleration on the top of piles is decreased significantly with the increasing of sand particle size, and the acceleration attenuation time is decreased slightly. In the frequency domain, the acceleration response spectrum peak of the same pile is increased with the increasing of sand particle size, while the frequency value corresponding to the spectrum peak changes little with the value of 10-20 Hz. The spectrum width reaches the widest value when the particle size is the smallest. In the case of large particle size range (1.00-2.00 mm), compared with other particle size ranges, the slope of trend line is lager, which means that peak acceleration changes obviously with the increasing of diameter ratio (pile diameter/sand particle size). The pile top acceleration is more sensitive to the change of diameter ratio in large particle size case. With the increasing of sand particle size, the peak strain of the same pile is decreased significantly, and the time required for pile stability is shortened for the same impact load.
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Received: 25 November 2021
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| ［1］ |
黄雨,八嶋厚,张锋.液化场地桩-土-结构动力相互作用的有限元分析［J］. 岩土工程学报, 2005, 27(6): 646-651.
|
|
HUANG Y, YASHIMA A, ZHANG F. Finite element analysis of pile-soil-structure dynamic interaction in li-quefiable site［J］. Chinese Journal of Geotechnical Engineering, 2005, 27(6): 646-651.(in Chinese)
|
| ［2］ |
高广运,杨先健,王贻荪,等.排桩隔振的理论与应用［J］. 建筑结构学报, 1997, 18(4): 58-69.
|
|
GAO G Y, YANG X J, WANG Y S, et al. Theory and application of vibration isolation by piles in rows［J］. Journal of Building Structures, 1997, 18(4): 58-69.(in Chinese)
|
| ［3］ |
许四法,陈浩,刘继状,等.超大直径单桩埋深对桩身变形的影响研究［J］.浙江工业大学学报,2019,47(2):129-134.
|
|
XU S F, CHEN H, LIU J Z, et al. Study on influence of depth of a single pile with large diameter on pile deformation［J］. Journal of Zhejiang University of Techno-logy, 2019,47(2):129-134.(in Chinese)
|
| ［4］ |
李丹阳,高盟,石传志,等.高铁移动荷载作用下桩承式路基的振动特性［J］.振动工程学报,2020,33(4):796-806.
|
|
LI D Y, GAO M, SHI C Z, et al. Dynamic response of subgrade in pile-supported embankment under moving train loads［J］. Journal of Vibration Engineering, 2020,33 (4): 796-806.(in Chinese)
|
| ［5］ |
唐亮,司盼,崔杰,等.液化微倾场地群桩地震反应分析拟静力方法［J］.吉林大学学报(工学版), 2022,52(4):847-855.
|
|
TANG L, SI P, CUI J, et al. Pseudo-static analysis method of pile group earthquake response in liquefying mild inclined sloping ground［J］.Journal of Jilin University (Engineering and Technology Edition), 2022,52(4):847-855.(in Chinese)
|
| ［6］ |
刘涉川,王安辉,章定文,等.可液化土中劲芯复合桩的地震响应特征［J］.土木与环境工程学报(中英文),doi: 10.11835／j.issn.2096-6717.2021.014.
|
|
LIU S C, WANG A H, ZHANG D W, et al. Seismic response of piles in cement-improved soil in a liquefiable soil［J］. Journal of Civil and Environmental Enginee-ring, doi: 10.11835／j.issn.2096-6717.2021.014.(in Chinese)
|
| ［7］ |
柳飞,李东海,吴炼石.侧摩阻力对桩基粒径效应的影响研究［J］.岩土工程学报,2013,35(增刊2):1016-1019.
|
|
LIU F, LI D H, WU L S. Influence of shaft resistance on particle size effects of piles［J］.Chinese Journal of Geotechnical Engineering, 2013,35(S2):1016-1019.(in Chinese)
|
| ［8］ |
刘毓氚,刘一鸣.桩基础对邻近场地冲击荷载的响应分析［J］.岩土力学,2012,33(9):2796-2802.
|
|
LIU Y C, LIU Y M. Analysis of pile foundation response to impact loading on adjacent field［J］. Rock and Soil Mechanics, 2012,33(9): 2796-2802.(in Chinese)
|
| ［9］ |
夏才初,曾格华,卞跃威.盾构隧道管片环纵向接头抗弯刚度值的不动点迭代确定方法［J］.岩石力学与工程学报,2014,33(5):901-912.
|
|
XIA C C, ZENG G H, BIAN Y W. Method for determining bending stiffness of shield tunnel segment rings longitudinal joint based on fix-point iteration［J］. Chinese Journal of Rock Mechanics and Engineering, 2014,33(5): 901-912.(in Chinese)
|
| ［10］ |
许成顺,孙毅龙,翟恩地,等.海上风电单桩基础自振频率及参数影响分析［J］.太阳能学报,2020,41(12):297-304.
|
|
XU C S, SUN Y L, ZHAI E D, et al. Offshore turbine monopile foundation natural frequency and parameter impact analysis［J］. Acta Energiae Solaris Sinica, 2020,41(12): 297-304.(in Chinese)
|
| ［11］ |
姜忻良,徐炳伟,焦莹.大型土-桩-复杂结构振动台模型试验研究［J］.土木工程学报,2010,43(10):98-105.
|
|
JIANG X L, XU B W, JIAO Y. Analysis of shaking table test of large-scale soil-pile-complex structure interaction ［J］. China Civil Engineering Journal, 2010,43(10): 98-105.(in Chinese)
|
| ［12］ |
陈跃庆,吕西林,李培振,等.不同土性的地基-结构动力相互作用振动台模型试验对比研究［J］.土木工程学报,2006,39(5):57-64.
|
|
CHEN Y Q, LYU X L, LI P Z, et al. Comparative study on the dynamic soil-structure interaction system with various soils by using shaking table model tests［J］. China Civil Engineering Journal, 2006, 39(5): 57-64.(in Chinese)
|
| ［13］ |
李森,俞剑,黄茂松.饱和黏土中不同刚度单桩水平循环加载离心试验［J］.岩土工程学报,2021,43(5):948-954.
|
|
LI S, YU J, HUANG M S. Centrifuge test on single pile with different rigidities in saturated clay under cyclic la-teral loading［J］. Chinese Journal of Geotechnical Engineering, 2021,43(5): 948-954.(in Chinese)
|
| ［14］ |
周峰,朱锐,林树枝,等.广义桩土共同作用的概念与发展［J］.南京工业大学学报(自然科学版),2020,42(6):683-689.
|
|
ZHOU F, ZHU R, LIN S Z, et al. Concept and deve-lopment of generalized pile-soil interaction［J］. Journal of Nanjing Tech University(Natural Science Edition), 2020,42(6):683-689.(in Chinese)
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2022, Vol. 43 
