砂土中不同长径比单桩水平非线性振动特性模型试验

郭彦超; 刘欢; 黄茂松

doi:10.11779/CJGE2015S2012

砂土中不同长径比单桩水平非线性振动特性模型试验 English Version

郭彦超^{1, 2},
刘欢^{1, 2},
黄茂松^1,2,

1. 同济大学地下建筑与工程系,上海 200092; 2. 同济大学岩土及地下工程教育部重点实验室,上海 200092

基金项目: 国家重点基础研究发展计划（“973”计划）课题（2012CB719803）; 国家自然科学基金项目（91315301）

详细信息

作者简介:
郭彦超(1990- ),男,河南濮阳人,硕士,从事岩土工程方面的学习和研究工作。

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出版历程
- 收稿日期: 2015-03-25
- 发布日期: 2015-07-24

Model tests on nonlinear vibration characteristics of single piles with different length-diameter ratios under lateral loading in sand

GUO Yan-chao^{1, 2},
LIU Huan^{1, 2},
HUANG Mao-song^1,2,

1. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2.Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Tongji University, Shanghai 200092, China

摘要

摘要: 水平向动力荷载作用下,桩侧土往往表现出显著的非线性特性。采用室内模型试验对砂土中不同长径比单桩水平非线性振动特性进行了研究,分析了不同荷载幅值和长径比对单桩水平非线性振动特性的影响。试验结果表明,激振荷载幅值越大,桩土非线性相互作用越明显,桩土系统的共振频率越低;桩径相同情况下,桩土系统共振频率及其衰减率与桩的长径比基本负相关。
- 单桩 /
- 模型试验 /
- 水平振动特性 /
- 非线性 /
- 长径比
Abstract: Soil nonlinearity around the pile becomes significant under lateral dynamic loading. Several laboratory model tests were conducted to investigate the nonlinear behavior of laterally loaded piles with different length-diameter ratios in sand, and to analyze the influence of loading amplitude and pile's length-diameter ratio on the nonlinearity. Test results show that the higher load amplitude leads to much stronger pile-soil nonlinear interaction and lower resonant frequency of the pile-soil system. The resonant frequency of the pile-soil system as well as its attenuation rate is negatively correlated with the pile's length-diameter ratio in case of the same pile diameter.
- single piles /
- model test /
- lateral vibration characteristic /
- nonlinearity /
- length to diameter ratio

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参考文献(9)

[1]	NOGAMI T, OTANI J, KONAGAI K, et al. Nonlinear soil-pile interaction model for dynamic lateral motion[J]. J Geotech Eng, ASCE, 1992, 118(1): 89-106.
[2]	EL Naggar M H, NOVAK M. Non-linear model for dynamic axial pile response[J]. J Geotech Engng, ASCE, 1992, 118: 89-106.
[3]	BOULANGER R W, CURRAS C J, KUTTER B L, et al. Seismic soil-pile-structure interaction experiments and analysis[J]. Journal of Geotechnical and Geoenvironmental Engineering, ASCE, 1999, 125(9): 750-759.
[4]	EL Naggar M H, BENTLEY K J. Dynamic analysis for laterally loaded piles and dynamic p - y curves[J]. Canadian Geotechnical Journal, 2000, 37: 1166-1183.
[5]	GLE D R, WOODS R D. Predicted versus observed dynamic lateral response of pipe piles[C]// Proc of the 8th World Conference on Earthquake Engineering, 1984: 905-912.
[6]	MANNA B, BAIDYA D K. The nonlinear coupled response of single and group piles under various horizontal excitations: experimental and theoretical study[J]. Geotechnical Testing Journal, 2012, 35(6): 1-15.
[7]	GOIT C S, SAITOH M, MYLONAKIS G, et al. Model tests on horizontal pile-to-pile interaction incorporating local non-linearity and resonance effects[J]. Soil Dynamics and Earthquake Engineering, 2013, 48: 175-192.
[8]	LOMBARDI D, BHATTACHARYA S, WOOD D M. Dynamic soil-structure interaction of monopile supported wind tubines in cohesive soil[J]. Soil Dynamic and Earthquake Engineering, 2013, 49: 165-180.
[9]	童建波, 高明. 侧向受载排桩的动力试验和非线性分析[J]. 水利水运科学研究, 1989(4): 65-80. (TONG Jian-bo, GAO Ming. Dynamic test and nonlinear analysis of row piles under lateral load[J]. Hydro-Science and Engineering, 1989(4): 65-80. (in Chinese))

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砂土中不同长径比单桩水平非线性振动特性模型试验 English Version

作者简介: 郭彦超(1990- ),男,河南濮阳人,硕士,从事岩土工程方面的学习和研究工作。

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出版历程

Model tests on nonlinear vibration characteristics of single piles with different length-diameter ratios under lateral loading in sand

计量

出版历程

目录

作者简介:
郭彦超(1990- ),男,河南濮阳人,硕士,从事岩土工程方面的学习和研究工作。