DE1658607A1 - Process for producing a bridge, device and (bridge) for carrying out the process - Google Patents

Description

DlPL-ING. H. FINK PATENTANWALT ■ 7300 ESSLINGEN (NECKAR) · HINDENBURGSTRASSE 44

. PoHnlonwolt FINK - 7300 Ewlingw (Nxtor), Hind «nburBitre6 · 44 ·

23 Oct 1967 Be P 5595

Αηκ .: Dr.-Ing. Tihamer Koncz, Zurich (Switzerland), Othmarstr. 8th

Method for producing a bridge, device and (bridge) for carrying out the method

Priority of the Swiss patent application 15 502- / 66 of ? Oct. 5, 1966 is claimed.

The invention relates to a method for producing a bridge, which is built on solid land and in the longitudinal direction their position of use is shifted, as well as a device and a bridge to carry out the procedure.

It is known to assemble a superstructure on solid land in the axis of the traffic route, to put this superstructure on transfer carriages and to push it forward so far that the cantilevered part can be placed on a floating structure. The superstructure, which is supported at one end on transfer carriages, rollers or rollers and at the other end on a floating structure, is pulled over from the bank by cable winches. It is also known to provide a front end when moving over land (Hut III, 28th edition 1956, page 392).

The aim of the invention is to build a bridge on a small construction site on solid land and to retract the bridge in the position of use while largely reducing pillar movements. This goal is achieved according to the invention in that the bridge

009843/0803 "- 2 -

BATH ORIGINAL

October 23, 1967 Be P 5595

made in parts and in sections the length of a part is shifted accordingly, including the bridge on each of the pillars serving for their momentary support a feed movement is granted. Since on solid land, not the entire length of the bridge but only a short part of the bridge only a small construction site is required, which is particularly important in a mountainous area and for road, bends after the bridge is advantageous. There is also a formwork for making a bridge just for each part to be produced used. Because of the bridge on every pillar given feed movement, there are no noteworthy pillar movements] on and it can be cored out without auxiliary pillars. The procedure can also be used on high pillars. The bridge is built in the same successive work cycles.

The rigidity of the bridge for the cantilever is further Training increased by the fact that the bridge is pre-tensioned with provisional tendons for the advance and after the advance is relieved.

An apparatus for carrying out the method is characterized in that on the bridge supports a carriage z \ xv receiving the bridge is provided by at least one VorschubgerHtes, particularly a working cylinder, is to be shifted in the axial direction of the bridge, and that at least one of the! Lifting device attached to the divider, in particular lifting cylinder, is used to raise and lower the bridge. The device is used to move the bridge in sections. To reduce the specific load on heavy bridges, the slide must be moved on a large-area bearing, the sliding surface of this bearing being covered with a plastic layer, in particular made of polytetrafluoroethylene . This results in

009843/0803

BATH ORIGINAL

Oct. 23, 1967 Be P 5595

a small wing loading and a good sliding behavior.

In a bridge for carrying out the method according to the invention with a device according to the invention, the part of the bridge to be displaced is approximately U-shaped in cross section and the top of the bridge is formed from prefabricated plates. The bridge can be made up of individual, yu eini; solid bodies connected to one another and each individually manufactured concrete parts are put together seamlessly.

Further advantages of the invention emerge from the remaining claims in conjunction with the following description and the drawing. In this one embodiment of the object of the invention is shown schematically, it pointer. Fig. 1 shows a cross section through a bridge Fir. 2 a bridge from the

See the page in a different scale l'if. 3 shows a detail from FIG. 2 on a larger scale

The bridge has a trough-shaped part 1 made of concrete, which extends seamlessly over the entire length of the bridge. The upper part 2 is a road surface which is formed from prefabricated tilting plates.

Iti extension of the bridge axis is on solid land, respectively the lower part 1 made in sections which are joined together without a joint. In each case after the production of a section the then finished part of the bridge is advanced with the aid of feed devices 6 attached to all pillars. Then the next section is made, seamlessly connected to the already finished bridge part and the bridge part prepopulated again. In this way the bridge becomes white produced and each section in your

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BATHROOM ORIGINAL ⁴ -

23 Oct 1967 Be P 5595

The feed device attached to each pillar has a carriage 8 which is supported on a surface bearing. Between the slide and the bearing there is a sliding layer made of plastic, in particular made of polytetrafluoroethylene. The slide is to be moved in the axial direction of the bridge with the aid of at least one working cylinder 9. At least one lifting cylinder 10 is attached to each: pillar for raising and lowering the bridge. After each feed path the completed bridge part is lifted off the slide so that it moves from its working cylinder into its starting position can be traced back. After the carriage has been returned, the bridge section is set down again on it.

At the front end of the bridge, at the free end of the bridge, there is a protruding nose 3, the length of which is about a third of the span between the pillars. In order to reduce the deflection of the protruding part, a guy tower 4 is set up on the bridge. In large projection during feed the cable guy tower are tense and after reaching the next arrow, the tension is released _{again. "}

In the case of a bridge with a span of around 50 m and with a highest column of 80 m, the bridge sections iYi are concreted around 9.0 m in length and connected seamlessly to the rest of the bridge. After concreting, the completed bridge section is pushed forward by the same length. The advance path of the carriage is approximately 100 cm and the rate of advance approximately 30 cm per minute. The feed devices are controlled from one point. During the displacement of the completed bridge parts, there are no noteworthy pillar movements , which is why the advancement method can also be used for long piers . It is only a formwork for the production of one

009843/0803 - * ⁵ "

BATH ORIGINAL

23 Oct 1967 Be P 5595

: ir. ': cl: share necessary. There is no scaffolding on which iitelle the provisional cables and the guy tower step) -

0098 /. 3/0803 BATH ORIGINAL

Claims (1)

23 Oct 1967 Be P 5595 Expectations 1. Method of making a bridge which is fixed on Land is rebuilt and pushed lengthways into its position of use, characterized in that that the bridge (1) is made in parts (5) and shifted in sections according to the length of a part, why the bridge on each of the to your instantaneous Support serving pillar a feed movement is given. 2. The method according to claim 1, characterized that the completed bridge part (1) to move is placed on a sliding carriage on a pillar and is moved with this uri'l that the bridge part of this: is lifted. 'j. Method according to Claim 1 or 2, characterized in that, for the purpose of pushing it in, the bridge is pre-tensioned with provisional tendons which are removed after it has been pushed in. 4. The method according to any one of the preceding claims, characterized marked that the manufactured for themselves Bridge parts seamlessly connected to the already finished bridge part will. ^l ). Apparatus for carrying out the method according to one of the preceding claims, characterized in that ge k e η η?. calibrate η ο t , 009843/0803 ORIGINAL BATHROOM 23 Oct 1967 Be P 5595 A carriage is provided on the bridge pillar to accommodate the bridge (1), which can be moved in the axial direction ^{1 of} the bridge by means of at least one Yca'schutrerntes, in particular a working cylinder, and that at least one lifting device, in particular a lifting cylinder, attached to the pillar, serves to love and lower the bridge. 6. Performing according to claim 5 »characterized that the slide is on a large bearing; -, u is moving and that the sliding surface of this bearing τη it a plastic layer, in particular made of polytetrafluoroethylene, is covered. 7 · Bridge to carry out the "procedure according to one of the Claims 1 to 4 with a device according to one of Claims 5 and 6, characterized in that that the part to be moved (1) of the bridge is approximately U-shaped in cross-section and that the top of the bridge is formed from prefabricated panels (2). 8. Bridge according to claim 7, characterized in that that they consist of individual concrete parts that are connected to one another to form a solid body and are each made for themselves (5) is composed. 9. Bridge according to claim 7 or 8, characterized in that a front end navel (3) is provided at a freely front end of the bridge (1), the length of the front end navel being about a third of the span of the bridge. 009843/0803 ORIGINAL BATHROOM 23 Oct 1967 Be P 5595 10. Bridge according to one of claims 7 to 9, characterized in that a with on the bridge this movable guy tower (4) is attached, with the help of which the bridge is to be prestressed. 0098Λ3 / 0803 ^BATH ORIGINAL