Finite element analysis of displacements of double pile-column bridge piers at steep slope

Abstract

In order to study bearing characteristics of bridge pile at steep slope under complex loads in mountians, according to double pile-column bridge piers engineering at steep slope and test models in laboratory, finite element analysis of pile-column bridge piers was carried out using software ADINA under different loadings, such as horizontal loading in the longitudinal direction along bridge, vertical loadings, slope top loadings and complex loadings. The numerical simulation results show that displacements of front pile pier top and back pile pier top are different under horizontal loadings in the longitudinal direction along bridge or vertical loadings, the displacements of front pile pier top are higher than those of back pile pier top, and its difference increases with the increase of loadings. Vertical displacements will also appear under slope top loadings, and displacements of front pier top are higher than those of back pier top too, while its difference reduces with the increase of loadings. Displacements of both front pile pier top and back pile pier top under comlex loading are larger than those under single loading.

Keywords

steep slope / pile-column bridge pier / finite element analysis / displacement

References

[1] ZhaoM-h, LiuE, WangYou. Stability analysis of pile foundation with higher pile-column bridge piers [J]. Journal of Highway and Transportation Research and Development, 2008, 25(7): 95-99

[2] YangM-h, ZhangX-w, ZhaoM-hua. A simplified approach for settlement calculation of pile groups considering pile-to-pile interaction in layered soil [J]. Journal of Central South University of Technology, 2011, 18(6): 2131-2136

[3] ZhaoM-h, LiuD-p, ZhangL, JiangChong. 3D finite element analysis on pile-soil interaction of passive pile group [J]. Journal of Central South University of Technology, 2008, 15(1): 75-80

[4] ZhaoM-h, LiuJ-h, LiuD-q, WangYou. Force analysis of pile foundation in rock slope based on upper-bound theorem of limit [J]. Journal of Central South University of Technology, 2008, 15(2): 404-410

[5] LiuJ-h, ZhaoM-h, YangM-hui. Model tests on bridge pile foundation in high and steep rock slopes [J]. Chinese Journal of Geotechnical Engineering, 2009, 31(3): 372-377

[6] LiuJ-h, ZhaoM-h, YangM-hui. Construction numerical simulation research for pile-column bridge piers double-row piles in steep slope [J]. Highway Engineering, 2010, 35(4): 1-6

[7] LuoW-h, LiuJ-h, CaoW-g, ZhaoM-hua. Stress analysis on the pile-column bridge piers in rock slope [J]. Highway Engineering, 2008, 33(1): 1-06

[8] ZhaoM-h, LiuJ-h, YangM-hui. Inner-force calculation of bridge pile foundation in high-steep rock slope under Inclined loads [J]. Chinese Journal Rock Mechanics and Engineerineg, 2006, 25(11): 2352-2357

[9] YangM-h, SunX-feng. Influence factors comparison model study on loading characteristic of bridge pile in steep slope when the slope sliding [J]. Highway Engineering, 2008, 33(3): 10-14

[10] Mc CulloughN J, DickensonS E. The behavior of piles in sloping rock fill at marginal wharves [J]. Journal of Geotechnical and Geoenvironmental Engineering, 20041-10

[11] KahyaogluM R, ImancliG, Ugur OzturkA, KayacarA S. Computational 3D finite element analyses of model passive piles [J]. Computational Materials Science, 2009, 46(1): 193-202

[12] AshourM, ArdalanH. Analysis of pile stabilized slopes based on soil-pile interaction [J]. Computers and Geotechnics, 2012, 39(1): 85-97

[13] PengJ R, RouainiaM, ClarkeB G. Finite element analysis of laterally loaded fin piles [J]. Computers and Structures, 2010, 88(2): 1239-1247

[14] LeeC J. Three-dimensional numerical analyses of the response of a single pile and pile groups to tunnelling in weak weathered rock [J]. Tunneling and Underground Space Technology, 2012, 32(1): 132-142

[15] KimY G, JeongS S. Analysis of soil resistance on laterally loaded piles based on 3D soil-pile interaction [J]. Computer and Geotechnics, 2011, 38(2): 248-257

[16] WenS-l, HuS-g, HuH-b, DengF, RenJ-ji. Test study of horizontal bearing mechanism of pile on canal slope [J]. Rock and Soil Mechanics, 20101786-1790