Soil-steel structure shell displacement functions based on tensometric measurements

• Autorzy: Machelski C.

Identyfikatory

DOI

10.2478/sgem-2018-0020

• Języki publikacji: EN

Abstrakty

EN

This paper analyses the effects of loads that change their location, i.e. moving but quasi-static loads. Displacements defining the deformation of the soil-steel structure’s shell buried in soil are calculated from the results of measurements performed using a dense grid of points located on the circumferential section of the corrugated plate. In this way, all the components of the structure, namely the corrugated plate, the backfill and the pavement with its foundation, as well as the natural (real) principles of their interaction, are taken into account in the solution. In the proposed algorithm, unit strains are converted into displacements, whereby results as accurate as the ones obtained by direct experimental measurements are obtained. The algorithm’s main advantages are that the number of points is limitless, they are regularly distributed on the circumferential section of the shell and any displacement directions can be obtained. Consequently, the deformations of the shell can be faithfully reproduced. The algorithm’s convenient feature is that one can use a simplified computational diagram of the shell in the form of a beam having the shape of the shell in 2D space (without the other components of the soil-steel structure). The advantage of this measuring method (electric resistance tensometry) is that there is no need to build the solid scaffold used for displacement measurements. The research focuses on the analysis of the displacements and the unit strains arising during the primary and secondary (return) travel of the load.

Słowa kluczowe

EN

soil-steel structure; moving loads; studies of shell deformations; displacement functions

• Wydawca: De Gruyter
• Czasopismo: Studia Geotechnica et Mechanica
• Rocznik: 2018
• Tom: Vol. 40, nr 3
• Strony: 170--179
• Opis fizyczny: Bibliogr. 13 poz., rys., tab.

Twórcy

autor

Machelski C.

• Faculty of Civil Engineering, Department of Bridges and Railways, Wrocław University of Science and Technology, Wrocław, Poland

Bibliografia

• [1] Machelski, C., Janusz, L., Tomala, P., Wiliams, K. (2018). Application of results of test in developing 2D model for soilsteel railway bridges. Conference Transportation Research Board of Nationals Academies, Washington D.C., 12-15 January 2018, Paper 19-05399.
• [2] Machelski, C. (2015). Stiffness of railway soil-steel structures. Studia Geotechnica et Mechanica, 4, 29-36.
• [3] Bęben, D. (2014). Experimental study on the dynamic impacts of service train loads on corrugated steel plate culvert. Journal of Bridge Engineering ASCE, 18(4), 339-346.
• [4] Mellat, P., Anderson, A., Pettersson, L., Karuomi, R. (2014). Dynamic analysis of a short span soil-steel composite bridge for railways traffic using field measurements and numerical modelling. Engineering Structures, 69, 49-61.
• [5] Sobótka, M. (2014). Numerical simulation of hysteretic live load effect in soil-steel bridge. Studia Geotechnica et Mechanica, 36.1, 103-109.
• [6] Machelski, C., Janusz, L. (2017). Application of results of test in developing 2D model for soil-steel railway bridges. Journal of the Transportation Research Board. Solid Mechanic. Transportation Research Board of Nationals Academies, Washington D.C., pp. 70-75.
• [7] Machelski, C. (2014). Dependence of deformation of soil-shell structure on the direction of load passage. Roads and Bridges, 13, 223-233.
• [8] White, K., Sargand, S., Massada, T. (2017). Evaluation of load rating procedure for metal culverts under shallow soil covers. Archives of Institute of Civil Engineering, 23, 311-323.
• [9] Asp, O., Laaksonen, A. (2016). Instrumentation and FE-analysis of a large span culvert built under railway. Structural Engineering International, 26(4), 357-364.
• [10] Moore, J.D., Regier, C., Hoult, N.A. (2017). Surface load testing of new circular and elliptical metal culverts at shallow cover. Archives of Institute of Civil Engineering, 23, 219-227.
• [11] Machelski, C. (2010). Kinematic method for the determination of influence function of internal force in the steel shell of soilsteel structures. Studia Geotechnica et Mechanica, XXXII(3), 27-40.
• [12] Sielver, M.L., Seed, H.B. (1971). Volume changes in sands during cyclic loading. ASCE Soil Mechanics and Foundations Division, 97(9), 1171-1182.
• [13] Pettersson, L., Wadi, A., Williams, K. (2017). Structural design of flexible culverts developments trends. Archives of Institute of Civil Engineering, 23, 237-250.