Concrete overpass - the analysis of the damage and the assessment of the repair concept
The aim was to analyze the structural damage of the overpass which was damaged as a result of the impact of the vehicle into the span.
To evaluate internal structural damage and structural safety, the advanced computational model was developed and validated against the damage measured on the actual object. The numerical simulations were supported by in-situ inspection and 3D laser scanning of the overpass.
The numerical model and the exemplary results of the calculations are presented below.
Fig. 1 The comparison of the numerical model and the actual structure
Fig. 2 3D laser scanning
Fig. 3 The comparison of the damage obtained in the simulation and and the damage measured on actual object
Fig. 4 The comparison of the numerical model of the strengthened structure with the actual repair
Wire rope - experimental and numerical tests
The aim of the research was to determine the properties of the 3x7 wire rope
Experimental 4-point bending tests were conducted. Two numerical models of the 3x7 wire rope were developed. The first model utilized beam finite elements to recreate the geometry of the wire rope, the second model of the wire rope was discretized by means of solid finite elements. The results of the numerical simulations were validated against the results obtained from the laboratory tests. The numerical analyses were solved using the full Newton method.
Selected results are shown below.
Fig. 1 The comparison of the actual wire rope (left) and the numerical models developed using solid finite elements (middle) and beam finite elements (right)
Fig. 2 The 4-point bending experimental and numerical tests - exemplary results
Vid. 1 4-point bending numerical tests of the wire rope
