Improvement of the monolithic quality
In order to enhance the monolithic quality of the concrete slab, the sleepers in the Rheda 2000 system were changed from a monoblock design to a precisely dimensioned concrete filigree twin-block design as seen in Figure 9.6. The geometrically exact supporting points precisely secure the rails in their required position. In addition, they guarantee an optimal bond in the cast concrete of the track layer, due to the considerable amount of steel reinforcement, which protrudes from the concrete supporting points.
The high concrete quality of the supporting points furthermore ensures a stain-resistant bond between the rail fastening system and the concrete track layer. This solution consequently guarantees safe, long-term transfers of the high static and dynamic service loads encountered in high-speed traffic.
Monolithic qualities have furthermore been enhanced by elimination of the concrete trough used in earlier Rheda applications, ideally, the longitudinal interface between trough and filler concrete should be fully closed and impervious to surface water. In actual practice, however, several cases continue, Rheda systems which have already been applied will require the the necessary maintenance measures to prevent reduction of service life.
Design optimization
By eliminating the conventional trough, a significant simplification of the overall system configuration was achieved. As a result, the entire cross section of the slab has become one monolithic component, whereas in the earlier trough configuration the filler concrete did not play a structural role. Due to the elimination of the trough and the use of twin-block sleepers,a considerable reduction of the structural height could be achieved as is revealed by the height figures in Figure 9.7.
Uniform system architecture
For reasons of cost-effectiveness in planning, engineering, and dimensioning,the Rheda 2000 system design had to fit a variety of track situations encountered in practice. From this objective, solutions have been developed for track systems on erathworks, on long and short bridges, in drilled tunnels, and for cut ＆ coner tunnels
首先非常感谢你的回复！但是我觉得有些部分翻译得不太正确……
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