SU106237A1 - A method of manufacturing prefabricated cantilevered retaining walls - Google Patents

Description

The described method consists in the manufacture of assembled-stressed 1 {Paul retaining walls by an industrial method — by creating a pre-stressing of the armor-ferms of the vertical part of the wall.

In order to create a prestressing of the armoform, the vertical part / wall (Fig. 1) during manufacturing is supplemented to double size symmetrically with respect to the AA axis (Fig. 2).

The trusses, thus doubled, are placed on a horizontal platform in pairs against each other, and four typical arm-constructions simultaneously participate in the prestressing process, the entrance to the wall shown in FIG. 1, or forming controfors, which form themselves.

The trusses can be used with a different lattice system, parallel or non-parallel in their own way, truss-like or other types without a reel.

Paired armoconstructions, obtained in the described way, are tied at the ends of rods gami 2, and

their common axis / 4/1 is located stationary or portable jack 3 hydraulic, lever or screw type (Fig. 2).

Ti 2 can also be shifted relative to the ends of the armoform and located not at the ends of them, but in the second, third and generally any node of the truss. Alternatively, jack 3 can be applied to a system of several jacks, also oriented in the direction transverse to the arm-trusses and transmitting pressure at their nodes.

By using several jacks, an optimum type of preliminary effort is obtained depending on the distribution of the operational load. For the case of cantilever retaining walls or contours with a plot of moments that change according to a parabolic law, it is possible to restrict one jack, giving a triangular plot of moments, somewhat overlapping the plot of moments caused by the spread of the ground.