›› 2013, Vol. 34 ›› Issue (S2): 413-420.

• Numerical Analysis • Previous Articles     Next Articles

Dynamic analysis of PCC pile composite foundation under train vibration load

FU Qiang1,2，DING Xuan-ming1,3，LIU Han-long1,2，KONG Gang-qiang1,2   

  1. 1. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China; 2. Geotechnical Research Institute, Hohai University, Nanjing 210098, China; 3. National Engineering Research Center of Water Resources Efficient Utilization and Engineering Safety, Hohai University, Nanjing 210098, China
  • Received:2013-03-24 Online:2013-11-11 Published:2013-11-19

PDF (Chinese)

946

Abstract: As a new type structure form in soft soil foundation treatment, PCC pile-net composite foundation has been used in high speed railway construction in soft soil area. The dynamic characteristics of PPC pile composite foundation under the train vibration load is worth studying. A reasonable train dynamic loading form is determined in this paper. A three-dimensional dynamic coupling finite element model of tracks-embankment-pile-soil composite foundation is established using software ABAQUS. The dynamic characteristics of embankment, pile and foundation soil are studied based on the modulus changes of foundation bed, pile, cushion layer and foundation. The results show that the dynamic response of PCC pile composite foundation is different from the solid pile; the reflection overlap effect of dynamic stress occurs in the pile. The dynamic interaction of pile and cushion layer is greater than that of soil and cushion layer. The modulus changes of foundation bed don’t affect the dynamic stress of pile-soil seriously. The dynamic load sharing ratio of the pile body increases with the increasing of the cushion stiffness. Meanwhile, the increase in modulus of the cushion enhances the dynamic stress of the pile top, which is due to dynamic deformation coordination occurring between piles and cushion. The increase in modulus of the pile enhances the dynamic stress of the pile and increases the propagation speed of dynamic stress. The PCC pile can bear most of the dynamic load and reduce the dynamic load of the soil, thus reduce the influence of upper load on composite foundation effectively. As the distance increases with the center pile, the dynamic stress of the side pile decreases.

Key words: high speed railway, train vibration load, PCC pile composite foundation, ABAQUS, dynamic finite element analysis

CLC Number: 

  • TU 435
[1] LIU Qing-bin, PAN Mao, LIU Jie, GUO Yan-jun, ZHANG Xiao-shuang, YAO Jian-peng, LI Fang-yu, . Paraview visualization and virtual reality of output of finite element analysis in Abaqus [J]. Rock and Soil Mechanics, 2019, 40(12): 4916-4924.
[2] ZHOU Jia-jin, GONG Xiao-nan, YAN Tian-long, ZHANG Ri-hong, . Behavior of sand filled nodular piles under compression in soft soil areas [J]. , 2018, 39(9): 3425-3432.
[3] CUI Xuan, DONG Wei-xin, ZHOU Han-min, SUN Shu-wei,. Secondary development of a constitutive model in ABAQUS for tailings sand using generalized plasticity theory [J]. , 2018, 39(2): 745-752.
[4] GUO Yang, LI Qing, XU Wen-long, QIAN Lu, TIAN Ce. Dynamic fracture process of a pre-crack under linear charge explosion [J]. , 2018, 39(10): 3882-3890.
[5] WANG Ren-chao, CAO Ting-ting, LIU Yan-ru. Implementations of hypoplastic model based on different time integration algorithms [J]. , 2017, 38(5): 1510-1516.
[6] GONG Di-guang, QU Zhan-qing, LI Jian-xiong, QU Guan-zheng, CAO Yan-chao, GUO Tian-kui. Extended finite element simulation of hydraulic fracture based on ABAQUS platform [J]. , 2016, 37(5): 1512-1520.
[7] LI Ming , GUO Pei-jun , LIANG Li , LI Xin，. Hydraulic fracturing characteristics of heterogeneous rock with hard inclusion distributed [J]. , 2016, 37(11): 3130-3136.
[8] WU Jun , LIAO Shao-ming , Huo Xiao-bo,. Effect of train vibration load of a running metro on excess pore water pressure [J]. , 2015, 36(S1): 496-500.
[9] LIU Run , LIU Wen-bin , HONG Zhao-hui , WANG Le，. A soil resistance model for subsea pipeline global lateral buckling analysis [J]. , 2015, 36(9): 2433-2441.
[10] XIAO Zhen-zhen , WANG Deng-yin , CHEN Jian-ye , YANG Bao-quan , ZHANG Lin，. Static and dynamic analyses of abutment stability and dam cracking of a roller-compacted concrete high-arch dam [J]. , 2015, 36(12): 3541-3547.
[11] WEI Li-min, FENG Sheng-yang, HE Qun, YANG Qi. Improved Koppejan creep model and its application [J]. , 2014, 35(6): 1762-1767.
[12] ZHOU Jia-jin , WANG Kui-hua , GONG Xiao-nan , ZHANG Ri-hong , YAN Tian-long , XU Yuan-rong，. Bearing capacity and load transfer mechanism of static drill rooted nodular piles [J]. , 2014, 35(5): 1367-1376.
[13] QI Yu-liang ，HISANORI Otsuka,. Study of ABAQUS dynamic infinite element artificial boundary [J]. , 2014, 35(10): 3007-3012.
[14] YANG Miao ，ZHANG Zhong-miao ，LIU Nian-wu ，SHI Mao-fei ，ZHANG Ri-hong . Numerical simulation of compressive mechanical characters of new bored grouting PHC nodular pile [J]. , 2013, 34(7): 2119-2126.
[15] CHEN Pei-shuai , CHEN Wei-zhong , ZHUANG Yan . Forecasting of rockburst with two-step method based on fracture mechanics [J]. , 2013, 34(2): 575-584.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] DENG Qin，GUO Ming-wei，LI Chun-guang，GE Xiu-run. Vector sum method for slope stability analysis based on boundary element method[J]. , 2010, 31(6): 1971 -1976 .
[2] WAN Shao-shi, NIAN Ting-kai, JIANG Jing-cai, LUAN Mao-tian. Discussion on several issues in slope stability analysis based on shear strength reduction finite element methods (SSR-FEM)[J]. , 2010, 31(7): 2283 -2288 .
[3] YAN Tie, LI Wei, BI Xue-liang. Research on effective stress model in porous media based on fractal method[J]. , 2010, 31(8): 2625 -2629 .
[4] XU Wei-sheng, CHAI Jun-rui, CHEN Xing-zhou, SUN Xu-shu. Study of nonlinear noncubic seepage in netwok rock and its application[J]. , 2009, 30(S1): 53 -57 .
[5] CHEN Bao-guo , SUN Jin-shan , ZHANG Lei. Study of stressing state and ground treatment of reinforced concrete arch culvert[J]. , 2011, 32(5): 1500 -1506 .
[6] WEI Hou-zhen, YAN Rong-tao, WEI Chang-fu, WU Er-lin, CHEN Pan, TIAN Hui-hui. Summary of researches for phase-equilibrium of natural gas hydrates in bearing sediments[J]. , 2011, 32(8): 2287 -2294 .
[7] YUAN Jing-qiang , CHEN Wei-zhong , TAN Xian-jun , WANG Hui. Mesomechanical simulation of grouting in weak strata[J]. , 2011, 32(S2): 653 -659 .
[8] JI Mao-wei , WU Shun-chuan , GAO Yong-tao , GE Lin-lin , LI Xiao-jing　. Construction monitoring and numerical simulation of multi-arch tunnel[J]. , 2011, 32(12): 3787 -3795 .
[9] ZHOU Jia-wu, LIU Yuan-xue, LU Xin, ZHENG Ying-ren. Existence and decoupling for flow potential of geomaterials[J]. , 2012, 33(2): 375 -381 .
[10] YIN Shun-de, FENG Xia-ting, ZHOU Hui, ZHAO Hong-bo, LI Shao-jun . Study on GA-NN model for forecasting the displacement of landslides affected by rainfall[J]. , 2003, 24(6): 1038 -1041 .
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd