Distribution of Lateral Pressure in Large Diameter Squat Silos under Eccentric Discharge


Article Preview

The eccentric discharge of stored solids in squat silos has caused many failures, especially that in metal silos. However, these failures are poorly interpreted by specialists. In particular, the lateral pressure distribution on vertical wall couldn’t be accurately recognized. In order to set out the method to calculate static lateral pressure, the appearance of stored solids in silos after eccentric discharge is researched. In this study, based on the overall balance method (OBM), the method for calculating lateral static pressure in squat silos after eccentric discharge is proposed. Four cases are listed according to different discharge stages. Calculative formulae are deducted for each case. This method is also focusing on unsymmetrical distribution characteristic of the lateral pressure. Two calculative examples are listed and the results of which illustrate the necessity of lateral pressure calculation in squat silos.



Edited by:

Chunliang Zhang and Paul P. Lin




Y. Z. Zhu et al., "Distribution of Lateral Pressure in Large Diameter Squat Silos under Eccentric Discharge", Applied Mechanics and Materials, Vols. 226-228, pp. 1420-1425, 2012

Online since:

November 2012




[1] R.A. Bucklin, S.A. Thompson and I.J. Ross: Journal of Structural Engineering, Vol. 116 (1990) No. 11, p.3175.

[2] H.A. Janssen: VDI Zeitschrift (DÜsseldorf), Vol. 39 (1895), pp.1045-1049.

[3] C.A. Coulomb: Memoires Savants Etrang. l'Acad. Sci, Vol. 7(1773), p.343.

[4] J.M. ROTTER: Celebration Volume for the 60th Birthday of Prof. Richard Greiner (Institute for Steel and Shell Structures, Australia 2001).

[5] C.B. Chen: Research on Distribution of Lateral Bulk-Solid Pressures on Silos' Walls (Ph.D., Hefei University of Technology, China 2006), p.94. (In Chinese).

[6] A.J. Sadowski and J.M. Rotter: Engineering Structures, Vol. 33 (2011) No. 4, p.1187.

[7] Irena Sielamowicz, Michał Czech and T.A. Kowalewski: Powder Technology, Vol. 93 (2010) No. 3, p.381.

[8] A.J. Sadowski and J.M. Rotter: Journal of Engineering Mechanics, Vol. 136 (2010) No. 6, p.769.