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Determining of the soil strength characteristics through the plate bearing test

Pantelidis L.

Foundations of Civil and Environmental Engineering

2008

No. 11

55-65

In the international literature there is often a confusion between the terms Modulus of Elasticity, EYoung, and Modulus of Deformation, EDef which is sometimes plainly referred to as Modulus E. In this paper the definitions of both the EYoung and the EDef have been clarified. Moreover, a soil classification diagram has been derived based on numerical analysis through a finite element software where soils are classified according to their shear strength parameters (c, φ) and their behavior under loads generated using a rigid circular bearing plate. Finally, a method for the determination of shear strength parameters, as well as the EYoung of soils has been proposed using the insitu Plate Bearing Test and solving a 3x3 mathematical system. The study and documentation of the proposed method is supported through three theoretical examples.

Evaluation of anti-vibration mat specimen 5 years after its laying into railway track

Hornicek L., Lidmila M.

Archiwum Instytutu Inżynierii Lądowej

2007

Nr 3

93-101

Anti-vibration mats are modem resilient elements which allow reducing the spread of vibrations caused by the operation of the railway rolling stock. The paper sums up the information on the second Czech railway test section with anti-vibration mats, which was established at the railway station of Stary Kolin in 2001. After more than 5 years after laying the anti-vibration mats, specimen of anti-vibration mat was sampled and laboratory measurements were carried out. The results of the tests of anti-vibration mat exposed to high-intensity railway operation lasting for more than 5 years will become a considerable contribution to the development of technical regulations for using anti-vibration mats on railway tracks in the Czech Republic.