1. School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang 621010, China 2. Department of Geological Engineering, Southwest Jiaotong University, Chengdu 610031, China 3. Faculty of Civil Engineering, Guangxi University of Science and Technology, Liuzhou 545006, China
The numerical analysis of pile-soil interaction commonly requires a lot of trial works to determine the interface parameters and the accuracy cannot be ensured normally. Considering this, this paper first conducts a sensitivity analysis to figure out the influence of interface parameters on the bearing behavior of a single pile in sand. Then, a simplified method for the determination of pile-soil interface parameters in layered soil is proposed based on the parameter studies. Finally, a filed loading test is used for the validation of the simplified method, and the calculated results agree well with the monitoring data. In general, the simplified method proposed in this paper works with higher accuracy and consumes less time compared with the traditional trial works, especially on the determinations of interfacial cohesive and interfacial friction angle.
. [J]. Frontiers of Structural and Civil Engineering, 2016, 10(1): 103-111.
Jiu-jiang WU,Yan LI,Qian-gong CHENG,Hua WEN,Xin LIANG. A simplified method for the determination of vertically loaded pile-soil interface parameters in layered soil based on FLAC3D. Front. Struct. Civ. Eng., 2016, 10(1): 103-111.
Zhang G, Zhang J M. Numerical modeling of soil-structure of a concrete-faced rockfill dam. Computers and Geotechnics, 2009, 36(5): 762–772
2
Zhou A, Lu T, Yao L. Current research and prospect of mechanical behaviors of soil-structure interfaces. Journal of Hohai University, 2007, 35(5): 524–528
3
Zhang D J, Lu T H. Establishment and application of an interface model between Soil and Structure. Chinese Journal of Geotechnical Engineering, 1998, 20(6): 62–66 (in Chinese)
4
Jin C Y, Feng X T. Research and application of nonlinear elastic-hardening interfacial constitutive model in disturbed belt. Material Research Innovations, 2011, 12(s1): 605–608
5
Yang Y, Liu Z. Contact surface element method for three-dimensional elastic contact problems. Lixue Xuebao, 1996, 28(5): 613–619
6
Goodman R F, Taylor R L, Brekke T L. A model for the mechanics of jointed rock. Journal of the Soil Mechanics and Foundations Division, 1968, 94(SM3): 637–660
7
Acer Y B, Durgunoglu H T, Yumay M T. Interface properties of sands. Journal of the Soil Mechanics and Foundations Division, 1982, 108(4): 648–654
8
Potyondy J G. Skin friction between various soils and construction material. Geotechnique, 1961, 11(4): 339–353
9
Vogelsang J, Huber G, Triantafyllidis T. A large-scale soil-structure interface testing device. Geotechnical Testing Journal, 2013, 36(5): 613–625
10
Taha A, Fall M. Shear behavior of sensitive marine clay-concrete interfaces. Journal of Geotechnical and Geoenvironmental Engineering, 2012, 139(4): 644–650
11
Cai Y, Zhu H, Zhuang X. A continuous/discontinuous deformation analysis (CDDA) method based on deformable blocks for fracture modeling. Frontiers of Structural and Civil Engineering, 2014, 7(4): 369–378
12
Wu W, Zhu H, Zhuang X, Ma G, Cai Y. A multi-shell cover algorithm for contact detection in the three dimensional discontinuous deformation analysis. Theoretical and Applied Fracture Mechanics, 2014, 72(SI): 136–149
13
Itasca Consulting Group, Inc. FLAC3D − Fast Lagrangian Analysis of Continua in 3 Dimensions. Ver. 3.1, User's Manual. Minneapolis: Itasca, 2006
14
Fan Z, Wang Y, Xiao H, Zhang C. Analytical method of load-transfer of single pile under expansive soil swelling. Journal of Central South University, 2007, 14(4): 575–579
15
Yin Z, Hong Z, Xu G. A study of deformation in the interface between soil and concrete. Computers and Geotechnics, 1995, 17(1): 72–92
16
VuBac N, Silani M, Lahmer T, Zhuang X, Rabczuk T. A unified framework for stochastic predictions of mechanical properties of polymeric nanocomposites. Computational Materials Science: Part B, 2015, 96(SI): 520–535
17
VuBac N, Rafiee R, Lahmer T, Zhuang X, Rabczuk T. Uncertainty quantification for multi-scale modeling of polymer nanocomposites with correlated parameters. Composites. Part B, Engineering, 2014, (68): 446–464
18
Jing J P, Gao G Y, Zhang Y S. Strengthening effect of total pile lateral friction by improving rock or soil strength at pile tip. Rock and Soil Mechanics, 2009, 30(9): 2609–2615 (in Chinese)
19
Yuan D, Huang H, Ma J. Three dimension nonlinear numerical analysis of negative friction of pile side in soft groud. Underground Space, 2004, 24(2): 456–460 (in Chinese)
20
Wang W D, Li Y H, Wu J B. Field loading tests on large-diameter and super-long bored piles of Shanghai Center Towers. Chinese Journal of Geotechnical Engineering, 2011, 33(12): 1817–1826 (in Chinese)