Load-bearing characteristics of square footing on geogrid-reinforced sand subjected to repeated loading

Abstract

A series of dynamic model tests that were performed on a geogrid-reinforced square footing are presented. The dynamic (sinusoidal) loading was applied using a mechanical testing and simulation (MTS) electro-hydraulic servo loading system. In all the tests, the amplitude of loading was ±160 kPa; the frequency of loading was 2 Hz. To better ascertain the effect of reinforcement, an unreinforced square footing was first tested. This was followed by a series of tests, each with a single layer of reinforcement. The reinforcement was placed at depths of 0.3B, 0.6B and 0.9B, where B is the width of footing. The optimal depth of reinforcement was found to be 0.6B. The effect of adopting this value versus the other two depths was quantified. The single layer of geogrid had an effective reinforcement depth of 1.7B below the footing base. The increase of the depth between the topmost geogrid layer and the bottom of the footing (within the range of 0.9B) did not change the failure mode of the foundation.

References

[1] LiangB, YangY-hai. Theory and experiment on bearing capacity of reinforced sandy soil [J]. Chinese Journal of Geotechnical Engineering, 2008, 30(1): 123-127(in Chinese)

[2] TafreshiM S N, KhalajO, DawsonA R. Repeated loading of soil containing granulated rubber and multiple geocell layers [J]. Geotextile and Geomembranes, 2014, 42(1): 25-38

[3] KhalajO, DavarifardS, TafreshiM S N M, EkB. Cyclic response of footing with embedment depth on multi-layered geocell-reinforced bed [C]// World Multidisciplinary Earth Sciences Symposium (WMESS 2016). IOP Conference Series: Earth and Environmental Science. Prague, Czech Republic: IOP Publishing, 2016, 44(2): 022015

[4] ShahinH M, NakaiT, MorikawaY, MasudaS, MioS. Effective use of geosynthetics to increase bearing capacity of shallow foundations [J]. Canadian Geotechnical Journal, 2017, 54121647-1658

[5] MehranniaN, KalantaryF, GanjianN. Experimental study on soil improvement with stone columns and granular blankets [J]. Journal of Central South University, 2018, 25(4): 866-878

[6] International Journal of Geomechanics, 2018, 18(10

[7] LeeK M, ManjunathV R. Experimental and numerical studies of geosynthetic-reinforced sand slopes loaded with a footing [J]. Canadian Geotechnical Journal, 2000, 374): 828-842

[8] SitharamT G, SireeshS, DashS K. Model studies of a circular footing supported on geocell-reinforced clay [J]. Canadian Geotechnical Journal, 2005, 42(2): 693-703

[9] PengF L, LiJ Z, TatsuokaF. Numerical study on deformation and failure of reinforced sand [J]. Journal of Central South University of Technology, 2005, 12(2): 220-224

[10] HouJ, ZhangM-x, ZhangT-t, ChenTong. Experimental research on effect of horizontal-vertical reinforcement configurations on foundations [J]. Rock and Soil Mechanics, 2011, 32(8): 2365-2370(in Chinese)

[11] Moghaddas TafreshiS N, NorouziA H. Bearing capacity of a square model footing on sand reinforced with shredded tire-An experimental investigation [J]. Construction and Building Materials, 2012, 35: 547-556

[12] LinY L, ZhangM X, JavadiA A, LuY, ZhangS L. Experimental and DEM simulation of sandy soil reinforced with H-V inclusions in plane strain tests [J]. Geosynthetics International, 2013, 20(3): 162-173

[13] TafreshiM S N, RahimiM, DawsonA, LeshchinskyB. Cyclic and post-cycling anchor response in geocell-reinforced sand [J]. Canadian Geotechnical Journal, 2018

[14] XuJ S, DuX L. Energy analysis of geosynthetic-reinforced slope in unsaturated soils subjected to steady flow [J]. Journal of Central South University, 2019, 26(7): 1769-1779

[15] BadakhshanE, NoorzadA. Effect of footing shape and load eccentricity on behavior of geosynthetic reinforced sand bed [J]. Geotextiles and Geomembranes, 2017, 45(2): 58-67

[16] RoyS S, DebK. Effects of aspect ratio of footings on bearing capacity for geogrid-reinforced sand over soft soil [J]. Geosynthetics International, 2017, 24(4): 362-382

[17] MoghaddasT, AfreshiS N, KhalajO. Laboratory tests of small-diameter HDPE pipes buried in reinforced sand under repeated-load [J]. Geotextiles and Geomembranes, 2008, 26(2): 145-163

[18] ChenJ F, GuoX P, XueJ F, GuoP H. Load behaviour of model strip footings on reinforced transparent soils [J]. Geosynthetics International, 2019, 26(3): 251-260

[19] KaziM, ShuklaS K, HabibiD. Behaviour of an embedded footing on geotextile-reinforced sand [J]. Proceedings of the Institution of Civil Engineers-Ground Improvement, 2015, 169(2): 120-133

[20] PrasadB D, HariprasadC, UmashankarB. Load-settlement response of square footing on geogrid reinforced layered granular beds [J]. International Journal of Geosynthetics and Ground Engineering, 2016, 2(4): 1-10

[21] TafreshiM S N, KhalajO, HalvaeeM. Experimental study of a shallow strip footing on geogrid-reinforced sand bed above a void [J]. Geosynthetics International, 2011, 18(4): 178-195

[22] GillK S, ChoudharyA K, JhaJ N, ShuklaS K. Experimental and numerical studies of loaded strip footing resting on reinforced fly ash slope [J]. Geosynthetics International, 2013, 20(1): 13-25

[23] HarikumarM, SankarN, ChandrakaranS. Behaviour of model footing resting on sand bed reinforced with multi-directional reinforcing elements [J]. Geotextiles and Geomembranes, 2016, 44(4): 568-578

[24] MoghaddasT, AfreshiS N, KhalajO, DawsonA R. Pilot-scale load tests of a combined multi-layered geocell and rubber-reinforced foundation [J]. Geosynthetics International, 2013, 20(3): 143-161

[25] WangX-cunExperimental researches and PFC numerical simulation for reinforcing mechanism and failure models of reinforced sand foundation [D], 2006, Shanghai, China, Tongji University(in Chinese)

[26] YetimogluT, WuJ T H, SaglamerA. Bearing capacity of rectangular footings on geogrid-reinforced sand [J]. Journal of Geotechnical Engineering, 1994, 120(12): 2083-2099

[27] ShinE C, DasB M, LeeE S, AtalarC. Bearing capacity of strip foundation on geogrid-reinforced sand [J]. Geotechnical and Geological Engineering, 2002, 20(2): 169-180

[28] GhoshA, GhoshA, BeraA K. Bearing capacity of square footing on pond ash reinforced with jute-geotextile [J]. Geotextiles and Geomembranes, 2005, 23(2): 144-173

[29] KeskinM S, LamanM. Experimental and numerical studies of strip footings on geogrid-reinforced sand slope [J]. Arabian Journal for Science and Engineering, 2014, 39(3): 1607-1619

[30] MartoA, OghabiM, EisazadehA. The effect of geogrid reinforcement on bearing capacity properties of soil under static load: A review [J]. Electronic Journal of Geotechnical Engineering, 2013, 18: 1881-1898

[31] AltalheE B, TahaM R, AbdrabboF M. Behavior of strip footing on reinforced sand slope [J]. Journal of Civil Engineering and Management, 2015, 21(3): 376-383

[32] ShadmandA, GhazaviM, GanjianN. Load-settlement characteristics of large-scale square footing on sand reinforced with opening geocell reinforcement [J]. Geotextiles and Geomembranes, 2018, 46(3): 319-326

[33] YamamotoK, KusudaK. Failure mechanisms and bearing capacities of reinforced foundations [J]. Geotextiles and Geomembranes, 2001, 19(3): 127-162

[34] XuC, LiangC, ShenP. Experimental and theoretical studies on the ultimate bearing capacity of geogrid-reinforced sand [J]. Geotextiles and Geomembranes, 2019, 47(3): 417-428

[35] LiG-xin. Some problems in design of geosynthetic-reinforced soil structures [J]. Chinese Journal of Geotechnical Engineering, 2013, 35(4): 605-610(in Chinese)

[36] ChakrabortyD, KumarJ. Bearing capacity of strip foundations in reinforced soils [J]. International Journal of Geomechanics, 2012, 14(1): 45-58

[37] ChenQ, Abu-FarsakhM. Ultimate bearing capacity analysis of strip footings on reinforced soil foundation [J]. Soils and Foundations, 2015, 55(1): 74-85

[38] GaoY, YangS, ZhangF, LeshchinskyB. Three-dimensional reinforced slopes: evaluation of required reinforcement strength and embedment length using limit analysis [J]. Geotextiles and Geomembranes, 2016, 44(2): 133-142

[39] HouJ, ZhangM, DaiZ, LiJ Z, ZengF F. Bearing capacity of strip foundations in horizontal-vertical reinforced soils [J]. Geotextiles and Geomembranes, 2017, 45(1): 29-34

[40] TafreshiM S N, DawsonA R. Behaviour of footings on reinforced sand subjected to repeated loading-Comparing use of 3D and planar geotextile [J]. Geotextiles and Geomembranes, 2010, 28(5): 434-447

[41] Abu-FarsakhM, ChenQ, SharmaR. An experimental evaluation of the behavior of footings on geosynthetic-reinforced sand [J]. Soils and Foundations, 2013, 53(2): 335-348

[42] SarideS, RayabharapuV K, VedpathakS. Evaluation of rutting behaviour of geocell reinforced sand subgrades under repeated loading [J]. Indian Geotechnical Journal, 2015, 45(4): 378-388

[43] TafreshiM S N, DawsonA R. A comparison of static and cyclic loading responses of foundations on geocell-reinforced sand [J]. Geotextiles and Geomembranes, 2012, 32(32): 55-68

[44] TurkerE, SadogluE, CureE, UzunerB A. Bearing capacity of eccentrically loaded strip footings close to geotextile-reinforced sand slope [J]. Canadian Geotechnical Journal, 2014, 51(8): 884-895

[45] TafreshiM S N, KhalajO. Analysis of repeated-load laboratory tests on buried plastic pipes in sand [J]. Soil Dynamics and Earthquake Engineering, 2011, 31(1): 1-15

[46] KhalajO, DarabiJ N, TafreshiM S N, MašekB. Protection of buried pipe under repeated loading by geocell reinforcement [C]//. World Multidisciplinary Earth Sciences Symposium, 2017, 2017: 022030

[47] ElS, AwwafM A, NazirA K. Cyclic settlement behavior of strip footings resting on reinforced layered sand slope [J]. Journal of Advanced research, 2012, 3(4): 315-324

[48] QianY, HanJ, PokharelS K, ParsonsR L. Performance of triangular aperture geogrid-reinforced base courses over weak subgrade under cyclic loading [J]. Journal of Materials in Civil Engineering, 2012, 25(8): 1013-1021

[49] LiuZeTest study numerical analysis on the static and dynamic characteristic of eco-reinforced earth retaining wall [D], 2012, Changsha, China, Central South University(in Chinese)

[50] XuR, FatahiB. Influence of geotextile arrangement on seismic performance of mid-rise buildings subjected to MCE shaking [J]. Geotextiles and Geomembranes, 2018, 46(4): 511-528

[51] KhalajO, TafreshiM S N, MašekB, DawsonA R. Improvement of pavement foundation response with multi-layers of geocell reinforcement: Cyclic plate load test [J]. Geomechanics and Engineering, 2015, 9(3): 373-395

[52] KhalajO, DarabiJ N, TafreshiM S N, JenicekS. Damping ratio of foundation bed with multilayered rubber-soil mixture [C]//. World Multidisciplinary Earth Sciences Symposium (WMESS 2018), IOP Conference Series: Earth and Environmental Science. Prague, Czech Republic: IOP Publishing, 2019012008

[53] ZhouJ, KongX-l, WangX-cun. Bearing capacity behaviours and failure models of reinforced ground [J]. Chinese Journal of Geotechnical Engineering, 2008, 30(9): 1265-1269(in Chinese)

[54] WangJ-q, ZhangL-l, LiuZ-q, ZhouY-wu. Large model test on geogrid reinforced sand soil foundation under dynamic loading [J]. Rock and Soil Mechanics, 2018, 39(10): 3539-3547(in Chinese)

[55] VenkateswarluH, UjjawalK N, HegdeA. Laboratory and numerical investigation of machine foundations reinforced with geogrids and geocells [J]. Geotextiles and Geomembranes, 2018, 46(6): 882-896

[56] OliaeiM, KouzegaranS. Efficiency of cellular geosynthetics for foundation reinforcement [J]. Geotextiles and Geomembranes, 2017, 45(2): 11-22

[57] Engineering Geology Handbook Compilation Committee.Engineering geology handbook [M], 2007, Fourth Edition. Beijing, China Architecture and Building Press, 218-224(in Chinese)

[58] Ministry of HousingUrban-Rural Development of the People’s Republic of China.GB50007-2011, code for design of building foundation [S], 2011, Beijing, China Architecture and Building Press, 5354(in Chinese)

[59] DashS K. Effect of geocell type on load-carrying mechanisms of geocell-reinforced sand foundations [J]. International Journal of Geomechanics, 2011, 12(5): 537-548

[60] ElS, AwwafM A. Behavior of strip footing on geogrid-reinforced sand over a soft clay slope [J]. Geotextiles and Geomembranes, 2007, 25(1): 50-60

[61] YunD H, KimY T. Experimental study on settlement and scour characteristics of artificial reef with different reinforcement type and soil type [J]. Geotextiles and Geomembranes, 2018, 46(4): 448-454

[62] ShenP-p, XuChao. Numerical analysis of the bearing capacity of geosynthetic reinforced soil foundation [J]. Journal of Yangtze River Scientific Research Institute, 2014, 31(3): 106-110(in Chinese)

[63] LathaG M, SomwanshiA. Bearing capacity of square footings on geosynthetic reinforced sand [J]. Geotextiles and Geomembranes, 2009, 27(4): 281-294

[64] SitharamT G, SireeshS. Model studies of embedded circular footing on geogrid-reinforced sand beds [J]. Proceedings of the Institution of Civil Engineers-Ground Improvement, 2004, 8(2): 69-75

[65] KolayP K, KumarS, TiwariD. Improvement of bearing capacity of shallow foundation on geogrid reinforced silty clay and sand [J]. Journal of Construction Engineering, 2013, 12: 1-10

[66] HanX, ZhangM-x, LiJ-y, JiangS-wei. Model test of sand foundation reinforced with high-strength geocell [J]. Journal of Yangtze River Scientific Research Institute, 2014, 31(3): 27-33(in Chinese)