Spring-Based Trapdoor Tests Evaluating Pile-Supported Load Transfer Platforms with Different Fill Materials
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 150, Issue 12
Abstract
Load transfer platform (LTP) plays an important role in load transfer between piles and subsoil in pile-supported embankments over soft soils. This study conducted spring-based trapdoor tests to investigate the load transfer mechanisms of LTPs with unreinforced and geosynthetic-reinforced river sand and lightweight aggregate (LWA) subjected to differential movement. Spring-based trapdoor tests were used to simulate the differential movement below the LTP under fill placement and surface footing loading to investigate the mobilization and degradation of soil arching and tensioned membrane effects above the trapdoor (simulating the subsoil settlement). To evaluate the trapdoor rigidity effect, both rigid (one-segment) and flexible (three-segment) trapdoors were utilized. Test results revealed that LWA, when utilized as an LTP material, could effectively improve the mobilization of soil arching, hinder the degradation of soil arching, and reduce the trapdoor settlement. LWA was proven to be a good alternative LTP fill material in pile-supported embankments. Geosynthetic reinforcement was beneficial to minimize degradation of soil arching. In the rigid trapdoor tests, the tensioned membrane effect was progressively mobilized with the applied footing pressure. However, the flexible trapdoor tests showed rapid mobilization of the tensioned membrane effect, followed by a sustained mobilization, and then a rapid arching degradation after a certain applied pressure was reached and continued. Under surface footing loading, the embankment with the LWA as the LTP fill material showed an inverted tower-shape deformation pattern, whereas that with the river sand as the LTP material exhibited a rectangular deformation pattern.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The first author gratefully acknowledges the Expanded Shale, Clay and Slate Institute for the John Ries Scholarship in support of the lightweight aggregate study. The authors also thank Arcosa Lightweight and its marketing and technical manager, Mr. Jack Moore, for the donation of the lightweight aggregate used in this study.
References
Al-Naddaf, M. 2019. “Investigation of soil arching under different modes of soil movement and surface loading.” Ph.D. dissertation, Dept. of Civil, Environmental, and Architectural Engineering, Univ. of Kansas.
Al-Naddaf, M., and J. Han. 2021. “Spring-based trapdoor tests investigating soil arching stability in embankment fill under localized surface loading.” J. Geotech. Geoenviron. Eng. 147 (9): 04021087. https://doi.org/10.1061/(ASCE)GT.1943-5606.0002601.
Al-Naddaf, M., J. Han, C. Xu, S. Jawad, and G. Abdulrasool. 2019a. “Experimental investigation of soil arching mobilization and degradation under localized surface loading.” J. Geotech. Geoenviron. Eng. 145 (12): 04019114. https://doi.org/10.1061/(ASCE)GT.1943-5606.0002190.
Al-Naddaf, M., J. Han, C. Xu, and S. M. Rahmaninezhad. 2019b. “Effect of geofoam on vertical stress distribution on buried structures subjected to static and cyclic footing loads.” J. Pipeline Syst. Eng. Pract. 10 (1): 04018027. https://doi.org/10.1061/(ASCE)PS.1949-1204.0000355.
ASTM. 2011. Standard practice for classification of soils for engineering purposes (Unified Soil Classification System). ASTM D2487. West Conshohocken, PA: ASTM.
ASTM. 2014a. Standard test methods for maximum index density and unit weight of soils using a vibratory table. ASTM D4253. West Conshohocken, PA: ASTM.
ASTM. 2014b. Standard test methods for minimum index density and unit weight of soils and calculation of relative density. ASTM D4254. West Conshohocken, PA: ASTM.
Bhandari, A., and J. Han. 2010. “Investigation of geotextile-soil interaction under a cyclic wheel load using the discrete element method.” Geotext. Geomembr. 28 (1): 33–43. https://doi.org/10.1016/j.geotexmem.2009.09.005.
Bhandari, A., and J. Han. 2018. “Two-dimensional physical modelling of soil displacements above trapdoors.” Geotech. Res. 5 (2): 68–80. https://doi.org/10.1680/jgere.18.00002.
Boudaghpour, S., and S. Hashemi. 2008. “A study on light expended clay aggregate (LECA) in a geotechnical view and its application on greenhouse and greenroof cultivation.” Int. J. Geol. 4 (2): 59–63.
Briançon, L., and B. Simon. 2012. “Performance of pile-supported embankment over soft soil: Full-scale experiment.” J. Geotech. Geoenviron. Eng. 138 (4): 551–561. https://doi.org/10.1061/(ASCE)GT.1943-5606.0000561.
Chen, Y.-M., W.-P. Cao, and R.-P. Chen. 2008. “An experimental investigation of soil arching within basal reinforced and unreinforced piled embankments.” Geotext. Geomembr. 26 (2): 164–174. https://doi.org/10.1016/j.geotexmem.2007.05.004.
Chevalier, B., G. Combe, and P. J. A. G. Villard. 2012. “Experimental and discrete element modeling studies of the trapdoor problem: Influence of the macro-mechanical frictional parameters.” Acta Geotech. 7 (1): 15–39. https://doi.org/10.1007/s11440-011-0152-5.
Fagundes, D. F., M. S. Almeida, L. Thorel, and M. Blanc. 2017. “Load transfer mechanism and deformation of reinforced piled embankments.” Geotext. Geomembr. 45 (2): 1–10. https://doi.org/10.1016/j.geotexmem.2016.11.002.
Giroud, J. P., and J. Han. 2004. “Design method for geogrid-reinforced unpaved roads. II. Calibration and applications.” J. Geotech. Geoenviron. Eng. 130 (8): 787–797. https://doi.org/10.1061/(ASCE)1090-0241(2004)130:8(787).
Han, J. 2021. “Koerner lecture: Geosynthetic-reinforced column supported embankments: Improving practice with better theory.” Geosynthetic, August 1, 2021.
Han, J., A. Bhandari, and F. Wang. 2012. “DEM analysis of stresses and deformations of geogrid-reinforced embankments over piles.” Int. J. Geomech. 12 (4): 340–350. https://doi.org/10.1061/(ASCE)GM.1943-5622.0000050.
Han, J., and M. A. Gabr. 2002. “Numerical analysis of geosynthetic-reinforced and pile-supported earth platforms over soft soil.” J. Geotech. Geoenviron. Eng. 128 (1): 44–53. https://doi.org/10.1061/(ASCE)1090-0241(2002)128:1(44).
Hewlett, W. J., and M. F. Randolph. 1988. “Analysis of piled embankments.” Ground Eng. 21 (3): 12–18.
Huang, J., J. Han, and S. Oztoprak. 2009. “Coupled mechanical and hydraulic modeling of geosynthetic-reinforced column-supported embankments.” J. Geotech. Geoenviron. Eng. 135 (8): 1011–1021. https://doi.org/10.1061/(ASCE)GT.1943-5606.0000026.
IREX (Institute for Applied Research and Experimentation in Civil Engineering). 2012. ASIRI national project: Recommendations for the design, construction, and control of rigid inclusion ground improvements. Paris: Presses des Ponts.
Jenck, O., D. Dias, and R. Kastner. 2007. “Two-dimensional physical and numerical modeling of a pile-supported earth platform over soft soil.” J. Geotech. Geoenviron. Eng. 133 (3): 295–305. https://doi.org/10.1061/(ASCE)1090-0241(2007)133:3(295).
Li, G., C. Xu, C. Yoo, P. Shen, T. Wang, and Q. Wang. 2022. “Effects of reinforcement arrangements on load transfer in spring-based trapdoor tests.” Geosynth. Int. 30 (4): 415–431. https://doi.org/10.1680/jgein.22.00265.
Low, B. K., S. K. Tang, and V. Choa. 1994. “Arching in piled embankments.” J. Geotech. Eng. 120 (11): 1917–1938. https://doi.org/10.1061/(ASCE)0733-9410(1994)120:11(1917).
Meles, D., A. Bayat, M. Hussien, S. Nassiri, and M. Gul. 2014. “Investigation of tire derived aggregate as a fill material for highway embankment.” Int. J. Geotech. Eng. 8 (2): 182–190. https://doi.org/10.1179/1939787913Y.0000000015.
Mohammadi Tehrani, F., F. Tizhoosh, S. M. Mousavi, and A. Kavand. 2019. “An experimental investigation of a full-scale reinforced lightweight aggregate embankment.” Adv. Res. Civ. Eng. 1 (2): 36–41. https://doi.org/10.30469/arce.2019.85700.
Nguyen, V., Q. Luo, Y. Xue, T. Wang, L. Zhang, and D. Zhang. 2023a. “Extended concentric arches model for piled beam-supported embankments.” Comput. Geotech. 160 (Aug): 105517. https://doi.org/10.1016/j.compgeo.2023.105517.
Nguyen, V. D., Q. Luo, T. Wang, K. Liu, L. Zhang, and T. P. Nguyen. 2023b. “Load transfer in geosynthetic-reinforced piled embankments with a triangular arrangement of piles.” J. Geotech. Geoenviron. Eng. 149 (2): 04022131. https://doi.org/10.1061/JGGEFK.GTENG-10586.
Ouyang, F., Z. Wu, Y. Wang, Z. Wang, J. Cao, K. Wang, and J. Zhang. 2024. “Field tests on partially geotextile encased stone column-supported embankment over silty clay.” Geotext. Geomembr. 52 (1): 95–109. https://doi.org/10.1016/j.geotexmem.2023.09.005.
Rui, R., J. Han, S. J. M. Van Eekelen, and Y. Wan. 2019. “Experimental investigation of soil-arching development in unreinforced and geosynthetic-reinforced pile-supported embankments.” J. Geotech. Geoenviron. Eng. 145 (1): 04018103. https://doi.org/10.1061/(ASCE)GT.1943-5606.0002000.
Rui, R., J. Han, Y.-Q. Ye, C. Chen, and Y.-X. Zhai. 2020. “Load transfer mechanisms of granular cushion between column foundation and rigid raft.” Int. J. Geomech. 20 (1): 04019139. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001539.
Rui, R., Y.-Q. Ye, J. Han, Y.-X. Zhai, Y. Wan, C. Chen, and L. Zhang. 2022. “Two-dimensional soil arching evolution in geosynthetic-reinforced pile-supported embankments over voids.” Geotext. Geomembr. 50 (1): 82–98. https://doi.org/10.1016/j.geotexmem.2021.09.003.
Tencate. 2014. Mirafi MPV400 production specification. Pendergrass, GA: Tencate Geosynthetics Americas.
Tensar. 2007. Product specification Tensar biaxial geogrid. Alpharetta, GA: Tensar International Corporation.
Terzaghi, K. 1943. Theoretical soil mechanics. New York: Wiley.
Van Eekelen, S. J. M., A. Bezuijen, and A. F. Van Tol. 2013. “An analytical model for arching in piled embankments.” Geotext. Geomembr. 39 (Aug): 78–102. https://doi.org/10.1016/j.geotexmem.2013.07.005.
Van Eekelen, S. J. M., and J. Han. 2020. “Geosynthetic-reinforced pile-supported embankments: State of the art.” Geosynth. Int. 27 (2): 112–141. https://doi.org/10.1680/jgein.20.00005.
Van Eekelen, S. J. M., A. A. M. Venmans, A. Bezuijen, and A. F. Van Tol. 2020. “Long-term measurements in the Woerden geosynthetic-reinforced pile-supported embankment.” Geosynth. Int. 27 (2): 142–156. https://doi.org/10.1680/jgein.17.00022.
Wang, G., X. Zhang, X. Liu, Z. Chang, and Z. Liu. 2024. “Large-scale field tests of the performance of geogrid-reinforced piled embankment over soft soil.” KSCE J. Civ. Eng. 28 (2): 655–672. https://doi.org/10.1007/s12205-023-0837-y.
Wang, X., X. Wang, G. Yang, and Y. Zong. 2022. “Study on load transfer mechanism of pile-supported embankment based on response surface method.” Appl. Sci. 12 (10): 4905. https://doi.org/10.3390/app12104905.
White, D. J., W. A. Take, and M. D. Bolton. 2003. “Soil deformation measurement using particle image velocimetry (PIV) and photogrammetry.” Géotechnique 53 (7): 619–631. https://doi.org/10.1680/geot.2003.53.7.619.
Xu, C., X. Zhang, J. Han, and Y. Yang. 2019. “Two-dimensional soil-arching behavior under static and cyclic loading.” Int. J. Geomech. 19 (8): 04019091. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001482.
Ye, Y. Q., J. Han, and R. Rui. 2023. “Evaluation of lightweight aggregate to reduce vertical stresses and improve load transfer in pile-supported embankments.” Transp. Geotech. 43 (Nov): 101125. https://doi.org/10.1016/j.trgeo.2023.101125.
Zhang, J., O. Jenck, and D. Dias. 2022a. “3D numerical analysis of a single footing on soft soil reinforced by rigid inclusions.” Int. J. Geomech. 22 (8): 04022113. https://doi.org/10.1061/(ASCE)GM.1943-5622.0002412.
Zhang, L., J. Zhou, S. Zhou, and Z. Xu. 2022b. “Numerical spring-based trapdoor test on soil arching in pile-supported embankment.” Comput. Geotech. 148 (Aug): 104765. https://doi.org/10.1016/j.compgeo.2022.104765.
Zhang, Z., F. J. Tao, J. Han, G. B. Ye, B. N. Cheng, and C. Xu. 2021. “Arching development in transparent soil during multiple trapdoor movement and surface footing loading.” Int. J. Geomech. 21 (3): 04020262. https://doi.org/10.1061/(ASCE)GM.1943-5622.0001908.
Zukri, A., R. Nazir, K. N. M. Said, and H. Moayedi. 2018. “Physical and mechanical properties of lightweight expanded clay aggregate (LECA).” MATEC Web Conf. 250 (Dec): 01016. https://doi.org/10.1051/matecconf/201825001016.
Information & Authors
Information
Published In
Journal of Geotechnical and Geoenvironmental Engineering
Volume 150 • Issue 12 • December 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Dec 19, 2023
Accepted: Jul 15, 2024
Published online: Sep 27, 2024
Published in print: Dec 1, 2024
Discussion open until: Feb 27, 2025
ASCE Technical Topics:
- Design (by type)
- Earth materials
- Engineering fundamentals
- Engineering materials (by type)
- Fills
- Foundations
- Geomaterials
- Geomechanics
- Geosynthetics
- Geotechnical engineering
- Load factors
- Load tests
- Load transfer
- Materials engineering
- Pile foundations
- Piles
- Soil dynamics
- Soil mechanics
- Soil settlement
- Structural design
- Structural engineering
- Tests (by type)
Authors
Metrics & Citations
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