| 摘要 |
Concrete dry retaining walls consist of solid blocks or formwork blocks. The latter, although only a concrete envelope, are relatively heavy and punch their way into the earth with their narrow-edged profile. Without a foundation, the wall is unstable. Yet as a gravity wall after earth filling it is too light, since earth scarcely loads the blocks but only the natural soil. The wall can only be of a small height or pronounced back-stepping is necessary. Then there is no longer a wall. The grid retaining wall according to the invention is the combination of a keyed, drawer-like concrete block, composed of two relatively light block halves, with an earth filling loaded by solid blocks so that the wall becomes a genuine gravity retaining wall. The rear side of the wall forming a narrow-edged concrete grid cuts into the slope and with the earth becomes a static, mutually supporting unit. The partly open front side of the wall permits a proportioned earth overflow of the pushing slope so that no slope pressure can build up. The large-area ground support of the wall dispenses with a concrete foundation on account of the low ground pressure. The wall can flexibly absorb any soil movements. Any horizontal adaptation to the terrain is also possible.
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