DE473255C - Three-hinged arch extension for reinforced concrete routes - Google Patents

Description

Three-hinged arch construction for routes made of reinforced concrete The invention relates to .an improvement of the further development of the three-left arch extension for Stretches of reinforced concrete according to your patent 471 875. It consists in that in the joint sockets designed as V-shaped notches of appropriate size of the leg of the sole under the wooden blocks on which the corresponding 'shaped Prop up the thighs and lay out layers of other material that is less pressure-resistant than concrete and - with increasing rock pressure in the Route cross-sectional plane compressed or sharpened to ventilate the V-shape Thighs can be removed by chopping them out.

The invention is shown in the drawing in five figures.

Fig. I is a cross-section through the expansion of the line.

Fig. 2 shows the lower left joint on a larger scale.

Fig. 3 and 4 are sections a-a of Fig. I and show the pinch joints once with a continuous pinch wood support (Fig.3) and furthermore without this insert (Fig.4).

Fig: 5 shows a joint location analogous to that according to Fig. 2 when used of wood, brick, sand, or any other more flexible material than concrete.

As with the main patent, the tunnel extension consists of three legs, which are put together to form a three-hinged arch, namely from the lateral ones Legs i and the bottom leg 2. The legs are pointed at both ends or notched and in the vertex joint as well as in the main patent with pinch plates 3 reinforced and connected by a cross bar 4. The pinch joints are at the feet formed as follows.

In the embodiment according to Figure 2, the two are angled to each other The standing foot surfaces of the leg i are first reinforced with the wooden blocks 3. Underneath are in the .ein part of the angular joint feeler woods 5, which are used to adapt the two Serve legs to each other and to the first occurring rock pressure. In the other Part of the leg joint are located below the pinch timbers 3 and the feeler timbers 5 bricks 9 or other more flexible material than concrete.

In the embodiment according to Fig. 5 is in one part of the angle joint placed below the pinches 3 sand 8, while in your other part of the Angular joint the bricks 9 lie directly below the pinch timbers 3.

In your cross-section in Fig. 3, you can see the pinch pieces as the top layer 3, below the feelers 5 and below the bricks 9.

In the section according to Figure 4, only the feeler wood 5 and the bricks are 9 is provided, while the continuous pinch wood is omitted.

The pinch joint parts are loose or tight at the member ends these or with each other and take over the same as with your main patent Function of a joint. When the mountain pressure occurs, they can be moved in. Widest Compress the shape, both horizontally and vertically and therefore result in the greatest possible adaptation to all operating conditions.

Claims (1)

PATENT CLAIM: Three-hinged arch extension for routes made of reinforced concrete with squeezable inserts in the joints according to patent 471875, characterized in that in the V-shaped notches of the corresponding size, the joint sockets of the sole leg under the squeezes onto which the correspondingly shaped Prop up the lateral thighs, there are still layers of other material arranged, which is less pressure-resistant than concrete and can be compressed in the cross-sectional plane with increasing rock pressure or removed by hacking out to ventilate the V-shaped sharpened lateral thighs.