Zależność deformacji konstrukcji gruntowo-powłokowej od kierunku przejazdu

Abstract

The paper analyzes the deformation of a corrugated steel shell of a soil-steel structure resulting from a load applied by a vehicle changing its position in a quasi-static way. The procedure of double (forward and backward) passage of the vehicle is presented. As a result of such loading, the shell displacements are reduced to zero, from which it can be concluded that the deformation of the soil-steel structure, where the backfill is an essential bearing element, is reversible. In the case of using a classic static procedure, i.e. during the testing of the structure under load acting in one position or with a single passage of the vehicle over the bridge (at low speed), residual displacements of the shell remain. Based on the test results presented in the paper it is shown that bi-directional passage of a vehicle (forward and backward) is a load cycle of the soil-steel structures. During the testing a locomotive was used as a movable load.