Study on the Features of Critical Arch in Granular Materials by the Developed Trapdoor Apparatus

مهندسی عمران فردوسی

Article 1, Volume 30, Issue 2 - Serial Number 18, May 2017, Pages 1-18   

Document Type: پژوهشی

DOI: 10.22067/civil.v30i2.41133

Authors

Ali Ahmadi; Ehsan Seyedi Hosseininia^*

Ferdowsi University of Mashhad

Abstract

This paper experimentally discusses events being relevant to the arching effect in granular materials by the developed trapdoor apparatus. A focus on the features of stable arch at two moments when an arch is on the verge of collapse in addition to the time after the collapse. The critical arch for a granular medium is the last stable arch belonging to a trapdoor with maximum possible width at a particular base angle. The maximum trapdoor width is observed 4.7 to 8.67 times the average particles diameter depending on the internal friction angle and base angle values. The critical arch has the maximum width in proportion to previous run, whereas its height not only increases but will get smaller. After arch collapses, particles remained in the test box, are approximately located on the horizontal rails symmetrical. Besides, their arrangement remains almost constant compared to early one.

Keywords

Granular materials; Trapdoor; Arch; Critical; Collapse

Supplementary Files

EditNoMarkup1-hossini.pdf

References

1. Pugnaloni, L.A. and Barker, G.C., "Structure and Distribution of Arches in Shaken Hard Sphere Deposits", Physica A: Statistical Mechanics and its Applications, Vol. 337, No.3, pp. 428-442, (2004)

2. Michalowski, R.L. and Park, N., “Arching in granular soils”, First Japan-U.S. Workshop on Testing, Modeling, and Simulation, Boston, Massachusetts, United States, (2005).

3. Guo, P. and Zhou, S., "Arch in Granular Materials as a Free Surface Problem", International Journal For Numerical And Analytical Methods In Geomechanics,Vol. 37, No. 9, pp. 1048-1065, (2012).

4. Eekelen, S.J.M., Bezuijen, A, Lodder, H.J. van Tol, A.F., "Model Experiments on Piled Embankments, Part I”, Geotextiles and Geomembranes, Vol. 32, pp. 69-81, (2012).

5. احمدی، ع.، سیدی حسینی‌نیا، ا، «بررسی آزمایشگاهی اثر قوس زدگی در مصالح دانه ای به کمک دستگاه توسعه یافته دریچه»، نشریۀ مهندسی عمران فردوسی مشهد، دوره 27، شماره صفحه: 17-30، (1395).

6. Shelke, A., and Mishra. S., "Uplift Capacity of Single Bent Pile and Pile Group Considering Arching Effects in Sand", Geotechical and Geological Engineering, Vol. 28, No. 4, pp. 337–347, (2010).

7. Jiang, Y.J. and Towhata. I., "Experimental Study of Dry Granular Flow and Impact Behavior Against a Rigid Retaining Wall", Rock Mechanics and Rock Engineering, Vol. 46, No. 4., pp. 1-17, (2012).

8. Qiu, G. and Grabe, J."Active Earth pressure shielding in quay wall constructions: numerical modeling”. Acta Geotechnica, Vol. 7, No. 4, pp. 343-355, (2012).

9. Lee, J. and Eun, J., "Estimation of Bearing Capacity for Multiple Footings in Sand”, Computers and Geotechnics, Vol. 36, No. 6, pp. 1000-1008, (2009).

10. Zhang, Z.X., Zhang, H. and Yan, J.Y., "A Case Study on the Behavior of Shield Tunneling in Sandy Cobble Ground", Environmental Earth Sciences, Vol. 69, No. 6, pp. 1-10, (2012).

11. Chen, R. P., Li, J., Kong, L.G, Tang, L., "Experimental Study on Face Instability of Shield Tunnel in Sand", Tunnelling and Underground Space Technology, Vol. 33, pp. 12-21, (2013).

12. Zhang, N., He, M. and Liu, P., "Water Vapor Sorption and its Mechanical Effect on Clay-bearing Conglomerate Selected from China", Engineering Geology, Vol. 141–142, pp. 1-8, (2012).

13. Zhang, L., Zhao, M. H. and He, W., "Working Mechanism of Two-direction Reinforced Composite Foundation", Journal of Central South University of Technology, Vol. 14, No. 4, pp. 589-594, (2007).

14. Li, S.J., Chen, J. and Feng, X.T., "Analytic Solution to Soil Arching Effect and its Application Based on Interaction of Slope Soil and Piles", Materials Research Innovations, Vol. 15, No. 1, pp. 578-581, (2011).

15. Deb, K., "A Mathematical Model to Study the Soil Arching Effect in Stone Column-supported Embankment Resting on Soft Foundation Soil", Applied Mathematical Modelling, Vol. 34, No. 12, pp. 3871-3883, (2010).

16. Tien , H. J., "A Literature Study of the Arching Effect", Msc thesis, Massachusetts Institute of Technology, (1996).

17. احمدی، ع.، «بررسی آزمایشگاهی پدیدۀ قوس‌زدگی در مصالح دانه‌ای به‌کمک دستگاه توسعه‌یافتۀ دریچه»، پایان‌نامۀ کارشناسی ارشد، دانشگاه فردوسی مشهد، (1392).

18. Rao, K.K. and Nott, P.R., "An Introduction to Granular Fow”, Cambridge University Press, (2008).