Effects of Surrounding Earth on Shell During the Construction of Flexible Bridge Structures

• Autorzy: Machelski Czesław

Identyfikatory

DOI

10.2478/sgem-2019-0002

• Języki publikacji: EN

Abstrakty

EN

A characteristic feature of soil-steel structures is that, unlike in typical bridges, the backfill and the carriageway pavement with its foundation play a major role in bearing loads. In the soil-steel structure model, one can distinguish two structural subsystems: the shell made of corrugated plates and the backfill with the pavement layers. The interactions between the subsystems are modelled as interfacial interactions, that is, forces normal and tangent to the surface of the shell. This is a static condition of the consistency of mutual interactions between the surrounding earth and the shell, considering that slip can arise at the interface between the subsystems. This paper presents an algorithm for determining the internal forces in the shell on the basis of the unit strains in the corrugated plates, and subsequently, the interfacial interactions. The effects of loads arising during the construction of a soil-steel bridge when, for example, construction machines drive over the structure, are taken into account in the analysis of the internal forces in the shell and in the surrounding earth. During construction, the forces in the shell are usually many times greater than the ones generated by service loads. Thus, the analytical results presented in this paper provide the basis for predicting the behaviour of the soil medium under operational loads.

Słowa kluczowe

EN

soil-steel structures; effects of surrounding earth on shell; construction phase

• Wydawca: De Gruyter
• Czasopismo: Studia Geotechnica et Mechanica
• Rocznik: 2019
• Tom: Vol. 41, nr 2
• Strony: 67--73
• Opis fizyczny: Bibliogr. 12 poz., rys.

Twórcy

autor

Machelski Czesław

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

Bibliografia

• [1] Machelski C. (2015) Stiffness of railway soil-steel structures. Studia Geotechnika et Mechanica. 4, 29–36.
• [2] Sobótka M. (2014) Numerical simulation of hysteretic live load effect in soil-steel bridge. Studia Geotechnika et Mechanica. 36.1. 103–109.
• [3] Machelski C. (2018) Budowlane obciążenia podatnych obiektów inżynierskich. Construction load of the soil-steel structures. Przegląd Komunikacyjny 10, 30–35.
• [4] 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, 1, 70–75.
• [5] Asp O., Laaksonen A. (2017) Instrumentation and FE-analysis of a large span culvert built under railway. Structural Engineering International. Vol. 26, No 4, 357–364.
• [6] 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.
• [7] Szajna W.S. (2007) Numerical model for the analysis of construction process of soil-steel culverts. Archives of Institute of Civil Engineering. 1, 215–223.
• [8] Machelski C. (2018) Soil-steel structure shell displacement functions based on tensometric measurements. Studia Geotechnika et Mechanica. 4, 29–36.
• [9] Tomala P., Nowak M., Samolewski W., Szyszka M. (2019) Soil- Steel Composite Structure Monitoring During Bacfilling and Uncovering – Observations and Remarks. Conf. Transportation Research Board of Nationals Academies, Washington D.C., 12–15 January, 2019.
• [10] Sielver M. L., Seed H. B. (1971) Volume Changes in Sands during Cyclic Loading. ASCE Soil Mechanics and Foundations Division Vol. 97, No SM9, September 1971.
• [11] Vaslestad J., Kunecki B., Johanson T. H. (2007) Twenty one years pressure measurements on buried flexible steel structure. Archives of Institute of Civil Engineering. 1, 233–244.
• [12] Łydżba D., Różański A., Sobótka M., Stefaniuk D., Chudy G., Wróblewski T. (2017) Mechanical behaviour of soil-steel structure subjected to live load and different water conditions. Archives of Institute of Civil Engineering. 23, 163–174.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).