Construction of elastic bearing for concrete blocks for ballast-free permanent way uses a spring unit placed on ground near aperture in block, and supporting filler fed into aperture for even block support

摘要

The concrete block (4) forms the mass and a spring unit (20) forms the spring of a mass-spring-system. The spring unit is positioned on the ground near an aperture (6) of the concrete block. After the block has been aligned using spindles (5), the aperture is filled with a supportive filler material (8) up to the spring unit. The spindles are released and the concrete block is placed on the spring unit. The spindles are removed after the filler material has reached support capacity. After the concrete block is fitted, a second concrete layer is applied to it, to carry esp. a track support frame. This is enclosed by a concrete filler layer.