EXPERIMENTAL PRESTRESSED CONCRETE OVERLAY FOR Y-TUNNEL ACCESS-ROAD IN THE CITY OF AMSTERDAM

Abstract

This paper contents a description of the design and construction of an experimental prestressed cement-concrete test-section which was constructed in 1980 to examine the practibility of the application for highway pavements. The test-section consists of 3 slabs, each with a length of 30 m and 7,50 m wide. In order to avoid the stressing actions within the expansion joints the stressing steel is arranged in the diagonal direction. The length was kept reduced in order to keep the expansion joints as simple as possible. The structural design is based on fatigue theory making use of the Palmgren-Miner rule. However the test-section is located on an urban road it has been designed for the northern access road to the Y-tunnel which carries about 70.000 vehicles per day on four lanes. Finally the paper gives a description of some economic aspects.