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CLC number: TU435

On-line Access: 2020-07-13

Received: 2019-08-14

Revision Accepted: 2020-01-14

Crosschecked: 2020-06-15

Cited: 0

Clicked: 1986

Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Wen-bo Tu

https://orcid.org/0000-0003-2879-6584

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Journal of Zhejiang University SCIENCE A 2020 Vol.21 No.7 P.565-579

http://doi.org/10.1631/jzus.A1900381


Dynamic behavior of laterally loaded caisson foundations based on different cushion types: an experimental and theoretical study


Author(s):  Wen-bo Tu, Mao-song Huang, Xiao-qiang Gu

Affiliation(s):  School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang 330013, China; more

Corresponding email(s):   wenbotu@126.com

Key Words:  Nonlinear dynamic response, Caisson foundation, Harmonic vibration test, Gravel cushion, Sand cushion


Wen-bo Tu, Mao-song Huang, Xiao-qiang Gu. Dynamic behavior of laterally loaded caisson foundations based on different cushion types: an experimental and theoretical study[J]. Journal of Zhejiang University Science A, 2020, 21(7): 565-579.

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%A Xiao-qiang Gu
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%DOI 10.1631/jzus.A1900381

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DOI - 10.1631/jzus.A1900381


Abstract: 
Bridge foundations located in deep water are usually subjected to horizontal dynamic loads and moments which may be caused by the wind, waves, earthquake, and the possibility of boat crashing or vehicle braking. caisson foundations based on gravel or sand cushions are a new type of deep-water foundation for bridges, suitable for meizoseismal areas. In this paper, harmonic horizontal excitation tests for the study of the lateral dynamic response of caisson foundations based on cushion layers are described. Different lateral loads and two different cushion types are considered. The results show that the lateral dynamic responses of caisson foundations based on sand and gravel cushions both show strong nonlinear characteristics, and the resonant frequency of the foundation decreases with the increase of the excitation force. The dynamic displacement of a foundation based on a sand cushion is far less than that based on a gravel cushion, and the rate of decrease of the resonant frequency of a foundation based on a gravel cushion is faster than that of a foundation based on a sand cushion under the same conditions. Under dynamic loading the gravel cushion can more effectively dissipate vibration energy and isolate the vibration, than the sand cushion can. A simplified nonlinear analysis method is proposed to simulate the lateral dynamic response of caisson foundations, and the predicted response shows a reasonable match with the results observed in laboratory tests. Scaling laws have also been applied in this small-scale vibration model test to predict the dynamic behavior of the prototype foundation.

不同垫层型式沉箱基础的水平振动特性研究

目的:沉箱底部垫层型式对基础的水平振动特性有重要影响. 本文旨在探讨不同垫层型式(砂垫层或碎石垫层)对沉箱基础水平动力响应的影响规律,并提出简化的沉箱垫层基础水平动力的非线性分析计算方法.
创新点:1. 针对不同垫层下的沉箱基础开展室内水平稳态振动模型的试验研究; 2. 建立沉箱垫层基础的非线性分析计算模型; 3. 建立沉箱垫层基础模型的动力特性与原型沉箱垫层基础动力特性之间的关系.
方法:1. 通过室内水平稳态振动模型试验研究,得出不同垫层型式对沉箱基础动力特性的影响规律(图11和12); 2. 通过理论推导,构建激振力大小与基础振动位移幅值及共振频率之间的关系,并建立相应分析模型(公式(3)和(12)); 3. 通过相似理论,分析模型基础与原型基础之间的动力特性关系(表5).
结论:1. 静荷载作用下,基础水平荷载-位移曲线近似于刚塑性发展过程,且基础置于砂垫层时的极限荷载比置于碎石垫层的更大; 2. 沉箱置于砂垫层或碎石垫层上时,随着激振力幅值的增大,由于土体非线性特性的产生,基础振动响应幅值明显增大,且基础的共振频率呈衰减趋势; 3. 相对于砂垫层,碎石垫层在动力荷载作用下更易产生塑性变形,从而消耗并阻隔部分能量的传递,进而表现出比砂垫层更好的隔震效应.

关键词:非线性动力响应; 沉箱基础; 稳态激振试验; 碎石垫层; 砂垫层

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

[1]Chen YW, Huang MS, Lou CY, 2018. Model tests and analyses of caisson foundation based on gravel cushion under cyclic lateral loads. Chinese Journal of Geotechnical Engineering, 40(9):1619-1626 (in Chinese).

[2]Combault J, 2011. The Rion-Antirion bridge—when a dream becomes reality. Frontiers of Architecture and Civil Engineering in China, 5(4):415-426.

[3]Combault J, Morand P, Pecker A, 2000. Structural response of the Rion-Antirion bridge. Proceedings of the 12th World Conference on Earthquake Engineering, p.1609.

[4]Dong XW, Zhou SZ, 2004. Design and construction of Rion-Antirion bridge in Greece. World Bridges, (4):1-4 (in Chinese).

[5]Dou GR, 2001. Similarity theory of total sediment transport modeling for estuarine and coastal regions. Hydro-Science and Engineering, 1(1):1-12 (in Chinese).

[6]Gazetas G, 1991. Formulas and charts for impedances of surface and embedded foundations. Journal of Geotechnical Engineering, 117(9):1363-1381.

[7]Gazetas G, Tassoulas JL, 1987. Horizontal stiffness of arbitrarily shaped embedded foundations. Journal of Geotechnical Engineering, 113(5):440-457.

[8]Gerolymos N, Gazetas G, 2006. Winkler model for lateral response of rigid caisson foundations in linear soil. Soil Dynamics and Earthquake Engineering, 26(5):347-361.

[9]Ghalesari AT, Rasouli H, 2014. Effect of gravel layer on the behavior of piled raft foundations. Proceedings of Geo-Shanghai 2014, p.373-382.

[10]Gu XQ, Yang J, Huang MS, et al., 2015. Bender element tests in dry and saturated sand: signal interpretation and result comparison. Soils and Foundations, 55(5):951-962.

[11]Hall L, Bodare A, 2000. Analyses of the cross-hole method for determining shear wave velocities and damping ratios. Soil Dynamics and Earthquake Engineering, 20(1-4):167-175.

[12]Han XL, Li YK, Ji J, et al., 2016. Numerical simulation on the seismic absorption effect of the cushion in rigid-pile composite foundation. Earthquake Engineering and Engineering Vibration, 15(2):369-378.

[13]Hardin BO, Drnevich VP, 1972. Shear modulus and damping in soils: design equations and curves. Journal of the Soil Mechanics and Foundations Division, 98(7):667-692.

[14]Iai S, Sugano T, 1999. Soil-structure interaction studies through shaking table tests. Proceedings of the 2nd International Conference on Earthquake Geotechnical Engineering, p.927-940.

[15]Iai S, Tobita T, Nakahara T, 2005. Generalised scaling relations for dynamic centrifuge tests. Géotechnique, 55(5):355-362.

[16]Infanti S, Papanikolas P, Benzoni G, et al., 2004. Rion-Antirion bridge: design and full-scale testing of the seismic protection devices. Proceedings of the 13th World Conference on Earthquake Engineering, p.2174-2189.

[17]Kagawa T, Kraft LM, 1980. Lateral load-deflection relationships of piles subjected to dynamic loadings. Soils and Foundations, 20(4):19-36.

[18]Li L, 1989. Seismic Isolation and Absorption Technology. Seismological Press, Beijing, China (in Chinese).

[19]Liang FY, Chen LZ, Shi XG, 2003. Numerical analysis of composite piled raft with cushion subjected to vertical load. Computers and Geotechnics, 30(6):443-453.

[20]Liu FC, Wu MT, Chen JL, et al., 2017. Experimental study on influence of geo-cell reinforcement on dynamic properties of rubber-sand mixture. Chinese Journal of Geotechnical Engineering, 39(9):1616-1625 (in Chinese).

[21]Mortara G, Boulon M, Ghionna VN, 2002. A 2-D constitutive model for cyclic interface behaviour. International Journal for Numerical and Analytical Methods in Geomechanics, 26(11):1071-1096.

[22]Park HJ, Kim DS, 2013. Centrifuge modelling for evaluation of seismic behaviour of stone masonry structure. Soil Dynamics and Earthquake Engineering, 53:187-195.

[23]Park HJ, Ha JG, Kwon SY, et al., 2017. Investigation of the dynamic behaviour of a storage tank with different foundation types focusing on the soil-foundation-structure interactions using centrifuge model tests. Earthquake Engineering & Structural Dynamics, 46(14):2301-2316.

[24]Pecker A, 2004. Design and construction of the Rion Antirion bridge. Proceedings of Geo-Trans 2004, p.216-240.

[25]Pecker A, Teyssandier JP, 1998. Seismic design for the foundations of the Rion Antirion bridge. Proceedings of the Institution of Civil Engineers-Geotechnical Engineering, 131(1):4-11.

[26]Qian JZ, 2004. Rion-Antirion bridge crossing the gulf of Corinth in Greece. Technology of Highway and Transport, (1):102-105 (in Chinese).

[27]Shang SP, Zhou ZJ, Liu K, et al., 2009. The research on the steel-asphalt isolation lay. Journal of Railway Science and Engineering, 6(3):13-16 (in Chinese).

[28]Wang C, Yu X, Liang FY, 2017. Erosion mechanism of local scour around cushioned caisson on reinforced ground. Marine Georesources & Geotechnology, 35(7):1028-1036.

[29]Yang J, Gu XQ, 2013. Shear stiffness of granular material at small strains: does it depend on grain size? Géotechnique, 63(2):165-179.

[30]Zhao X, Zhang Q, Zhang Q, et al., 2016. Numerical study on seismic isolation effect of gravel cushion. Proceedings of the 7th International Conference on Discrete Element Methods, p.1055-1063.

[31]Zhong R, Huang MS, 2013. Winkler model for dynamic response of composite caisson-piles foundations: lateral response. Soil Dynamics and Earthquake Engineering, 55:182-194.

[32]Zhu JM, Zhang RX, Mu BG, et al., 2014. Application of gravel cushion in super-large laying-down foundations. Highway, 59(3):84-87 (in Chinese).

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