VMO (Great Urban Ring Road) Dobrovskeho - a large-sized loading test

Within the monitoring of the construction of road tunnels of the Brno VMO (Great Urban Ring Road) Dobrovskeho, a unique large-sized loading test of a model of the tunnel lining at a scale of 1:1 was carried out in cooperation with the general designer of the construction, the company Amberg Engineering Brno, on 24 June 2010.

The loading test was made on a segment of 5.5 x 2.0 metres in size, of the primary lining of the top heading of the tunnel. The continuous loading of the element was induced atypically by stretching 170 pieces of patent wires placed both in the concrete segment and in its surface. In the course of the test, the deformation of the loaded element and the stress on its surface, in the concrete and in the steel girders of the HBX type were measured.