DE1947292A1 - Bridge construction process and the bridge built afterwards - Google Patents

Description

PATS WTAJT-WJ

ing. B. HOLZEE

89 AUGSBUBG

M. 485

UMl

Augsburg, September 18, 1969

The Secretary of State for Defense in your Government Majesty the Queen of the United Kingdoms of Great Britain and Northern Ireland, Whitehall, London, S.W.L, England

Bridge construction process and bridge produced afterwards

The invention relates to a bridge building method according to which obstacles are bridged by means of an at least partially assembled main bridge girder. Further The invention relates to a bridge produced by this method.

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It is often used, especially for military purposes, requires quickly bridging an obstacle such as a river, wide ditch, etc. beat. Such bridging must often be made in places to which access is difficult and which are not very suitable for building a bridge. This problem is usually solved by that prefabricated bridge parts are only joined together to form bridge girders at the location of the bridge and that then the bridge girders are each maneuvered over the obstacle.

These pillarless bridges, which are each supported only at their ends, have the disadvantage that you Bearing capacity is severely limited. The load-bearing capacity can be increased through the use of supporting pillars, however, the previous methods for erecting pillars in the places that are to be stamped for this purpose are often only with difficulty or not at all applicable; in either case, by time, welehe will be used to build Piers according to the previous method is required, the construction time of the bridge is greatly increased.

The invention aims to achieve the object of providing a bridge with supporting pillars in such a way that

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this does not increase the time required for the construction of the bridge inadmissibly.

The object is achieved according to the invention in that that first the main girder brought over the obstacle in question in a manner known per se, or at least at least is partially advanced over this and then after and support pillars are lowered from one or more positions along the main girder.

In a preferred method according to the invention the pillars are supported by tubular guide members lowered through and then attached to these guide parts, the latter in a suitable stage of the Bridge construction to be connected to the main girder.

The pillars themselves are assembled from pillar parts, by attaching them to each other with their ends. Each part of the pillar is relative to its own Size and weight designed so that it is respectively can be brought into the appropriate position by human power. The top of each finished assembled The buttress is then attached to the guide post.

In the following the invention using the example of a

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preferred embodiment, which is shown in the drawings, explained in more detail. They show in detail:

Fig. 1 is a schematic side elevation of a

over an obstacle protruding bridge main girder,

Fig. 2 is a schematic side elevation of a

bridge main girder located in the desired position, its inventive Support pillars are not yet fully assembled,

Fig. 3 is a schematic side elevation of a in

the desired position located bridge main girder with ready-assembled Support pillars according to the invention,

Figure 4 is a schematic end view of a

Bridge part with an attached Support pillars according to the invention,

. FIG. 4a is the same view as in FIG. 4

other bridge arrangement according to the invention,

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Pig. 5 is a side elevation of a guide part;

into which a pillar part is inserted, as shown in Pig. 4,

Fig. 5a is the same side elevation as in Fig. 5,

but with respect to the bridge arrangement as shown in Fig. 4a,

Figure 6 shows in side elevation a detail of a main beam connecting device and

Pig. 7th

to 10 in a schematic representation accordingly

the pig. 1 to 3 four stages of a further type of one according to the invention Bridging.

As shown in Figs. 4, 4a and 5, 5a a complete pillar according to the invention assembled from a number of pillar parts 10, 10a, the latter are preferably tubular and / or lattice-shaped and have a rectangular cross-section. Every pillar part is provided with a large number of holes 11, 11a, which are each arranged in rows along the pillar in the middle (cf. Fig. 4a) or on the two edges (see Pig. 4) of two opposite sides of a pillar part.

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are arranged. Tubular guide parts 12, 12a, of which in Pig. 1 only one is shown, are each on the longitudinal sides of a bridge main girder 1 with each vertical running axis each attached to a support 13 * 13a, which the latter even with the main bridge girder 1 through Fastening parts 27, 27a is connected. In the upper edges of the guide parts 12 slots 14, 14a are formed in each case, and arranged so that they can accommodate pins 24, which latter are detachably attached in the holes 11, 11a of a pillar part located in the guide part. the The purpose of these slots is described below.

At the lower end of the lowermost pillar part 10, 10a an ankle joint part 15 * 15a is attached to each pillar, to which the latter a foot 16, 16a is attached. The uppermost pillar part 10, 10a extends through the respective associated guide part 12, 12a through and carries this guide part, which is shown in Fig. 4 and in will be described in more detail below. The bridge arrangement is additionally supported by a transverse tie rod 17, 17a stiffened, the latter between the ankle parts (see FIG. 4) or on opposite sides of the bridge main girder 1 located lower pier parts (see. Fig. 4a) of the corresponding pier is attached. In the event that a foot 16, 16a, for example, in a

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The muddy riverbed is heavily sunken. "Everyone is PuB 16 «I6a with the respectively assigned ankle 15, 15a connected via a weak intermediate part 28, 28a, which the latter enables the pillar to be separated from the corresponding foot. The relevant pillar will in this case raised by the lifting device, leaving behind the corresponding FuBee.

According to the arrangement shown in FIGS. 4 and 5, support parts 18a, 18b are each with their sides Cattle arranged slots 19 for receiving the pins 24 mounted in the holes 11 are provided. Also are the support parts 18a, 18b are provided with holes 20 through which they are each connected to a guide part 12 can be, in such a way that the forces are transmitted from the pillar parts 10 to the guide parts 12 and vice versa will. Vertical lifting devices 21 are arranged on opposite sides of each guide part 12, each of which has a piston rod 26 and is used to assemble and disassemble the pillar in question will.

Each pillar is as shown in Flg. K according to the invention composed as follows: The support parts 18a are each set by pins 23 at the lower end of the guide

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part 12 on two opposite sides of the same attached. The slots 19 of the support parts 18a are directed downwards. This is followed by a pillar part brought into such a position by hand that it can be lowered through the guide part 12 through. Pencils, which correspond to the pins numbered with 24 inserted into the holes 11 of the pillar part 10, which is then lowered until these pins in the fe slots 14 rest in the upper edge of the guide part, so that a further lowering of the pillar part 10 is initially not possible. The holes 11 are for this process step arranged according to the invention such that the lower part of the pillar part 10 from the lower Part of the guide part 12 protrudes. As a result, the ankle part 15 and the foot 16 on the pillar part can now be attached with the help of pins or the like.

Another pillar part 10 is now placed by hand on 'the first pillar portion and connected by pins 24 with this. The pins 24 are each inserted through the lowermost holes 11 of the adjacent ends of the two pillar parts 10. A support part 18b is in each case at the end of the piston rods 26 of the lifting devices 21 attached to the guide part by means of holes 20

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insertable pins attached so that the slots 19 are directed upwards. The piston rods 26 must be at this process step almost completely pulled out be what is indicated in Fig. 4 by dashed lines. More pins 24 are through the immediately holes located in the upper pillar part 10 above the slots 19 of the support parts 18b. The piston rods 26 are then extended further until the slots receive these pins 24, so that the pillar assembly is slightly raised and thus the pins, which rested in the slots 14 of the guide part 12, from the lower Pillar part 10 can be removed. The piston rods are then retracted and with them the pillar arrangement lowered.

Long pillar parts are gradually lowered by repeatedly using the lifting devices 21. the The pillar assembly can be held in any desired position when pins 24 pass through the corresponding holes 11 are pushed in the upper pillar part 10 so that they interact with the slots 14. When repeating the In the process described above, more pillar parts are added and the pillar is thus extended until each foot 16 rests on a supporting surface. By turning around

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the direction of the support parts 18b and by withdrawing the Piston rod 26, the PUhrung parts 12 and thus the main bridge girder 1 are raised with respect to the pillars and thus a slack in the main bridge girder 1 is eliminated. Then in the holes 11 ″ which are close to the Slots 19 are located in the support parts 18a at the lower end of the guide part 12, pins 24 inserted. These pens transfer the load on the main girder 1 to the piers.

In another bridge arrangement according to the invention, which is shown in FIGS. 4a and 5a, the Support parts 18a and 18b not used. The pillar parts 10a are each with on two opposite sides a single, centrally arranged row of holes 11a, into which support pins 24 can be inserted. During assembly, the first pillar part 10a is introduced into the guide part 12a and there by pins, which each through holes 11a and slots 14a cooperating with these in the upper edge of the guide part 12a are inserted, held while the ankle part 15a and the foot 16a are attached to this pillar part. After the support pins 24 have been removed, the pillar part 10a is lowered with the aid of a lifting device 21a, the latter

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on the one hand on the guide part 12a and on the other hand a mounting bracket 29 is attached «which has a hole 34 and has a slot 35 through which the latter pins for attaching the support bracket to the respective Pillar part are introduced. The gradual lowering of the respective pillar »which alternates with the lifting device and is carried by the guide part, as well as the attachment of further pillar parts is done in the manner described with reference to Figs. After the pillar is fully assembled a sagging of the bridge main girder thereby eliminated, that the piston rod 26a is withdrawn so far "that the load on the main beam" after the introduction of Pins each in holes 30 of the guide parts and in corresponding holes 11a in each case in the uppermost pillar part 10a, is transferred to the pillars.

The guide parts 12a have a somewhat larger cross-section in the horizontal direction than the pillars «which the latter between fixed guide stops 36 "which extend in the interior of the guide parts 12a parallel to the corresponding pillar surfaces, and between adjustable lower guide stops 37 are introduced. The lower guide stops are specially shaped,

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rods provided with cams 38 which, according to the illustration of the left guide part in FIG. 4a, form the bridge piers each normally touch during its erection. These adjustable guide stops can by a Rotation by 90 in one, in Fig. 4a on the right guide part 12a are brought into the position shown, so that when the pillar sink in due to load the same can change the angle between the pillar and the guide part to a limited extent. The lower guide stops but can also be designed as simple pins or rods, which after erection of the pillars from the Guide parts are pulled out. With this arrangement, in the event of a stronger one-sided lowering of the Bridge and an associated transverse slope, the guide parts and thus the level of the bridge are raised, without contact taking place between the pillar in question and the lower end of the guide part.

An adjustable strut 23, 23a connects each the guide part 12, 12a with the bridge main girder, so that during the erection of the pillars the mutual Alignment of the guide parts 12, 12a is maintained. This strut is lengthened or shortened in such a way that that the respective guide part always remains in a vertical position,

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even if the main girder of the bridge is inclined, what for example can occur in a river or a moat, the banks of which are each at different heights. If there are different depths in relation to the individual pillars, the respective length will of course be used the pillar changed so that this difference is compensated.

The assembly of a bridge main girder or the construction of a bridge according to the invention is discussed below With reference to Figs. 1 to 3 and 6 described. A main bridge girder 1 is formed, for example, from two main support parts 2, the latter by in Fig. 6 as Beam connection devices 3 shown in detail be connected to each other. Each carrier connecting device 3 has two connecting elements 30, each of which are attached to the ends of the main beam parts to be joined together. These connecting elements 30 are on their upper ends by pins which rest in the holes 31, connected to one another in a hinge-like manner. A lower chord tensioner 32 is at each of the adjacent lower ends of the connecting elements 30 are operatively connected to these. By adjusting the clamping device 32 changes the angle between the connecting elements 30 and

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thus the angle between the two main support parts 2 to which the connecting elements are each attached. When the main bridge girder is in its desired position, strap connectors 33 are attached which rigidly connect the lower ends of the connecting elements 30 to one another.

The bridge main girder 1 is at one end with a Boom 4 connected and set on rollers 5, which are near the edge of an obstacle to be bridged are arranged. The main beam is then rolled forward until the boom 4 is on the opposite edge of the obstacle. When the center of the main beam 1, in which usually the beam connecting device 3 is arranged, the rollers 5 releases, the cross member 13 or 13a (see. Fig. 4 or 4a) and the guide parts 12 or 12a connected to the main beam. At this stage the bridge building process will be beneficial each time the first pillar parts 10 and 10a with the corresponding guide parts 12 and 12a and then the ankle parts or 15a, the feet 16 or 16a and the pull rod 17 or 17a each connected to the corresponding pillar parts 10 and 10a.

When the guide parts 12, 12a and the carrier 13, 13a

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are connected together with other parts of the pillar, which are advantageously already attached at this stage, the main girder 1 is brought into its final position over the obstacle and then the boom 4 is removed. The pillars are then assembled in the manner previously described. The bridge building method according to the invention can of course also be extended to applications in which several pillars ¹ supports are required along the main girder.

According to a wet type of bridge construction process according to the invention, which is shown in FIGS. 7 to 10, a cross member with the corresponding guide points etc. releasably attached to the end of a bridge main girder protruding over the obstacle. The main carrier will then partially rolled over the obstacle, (see Fig. 7) and then pillars are lowered through the guide parts (see Fig. 8). The main carrier will then by opening the connecting parts 27, 27a of the Pillar arrangement released and further to the other edge of the obstacle or to an intermediate position (see Fig. 9) pushed out, where the pillars are then lowered again. The main girder is over the pillars that have already been erected conveyed further on rollers or bearings (see Fig. 4a), which the latter are attached to the respective cross members.

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are brought. After the first pair of pillars has been erected, it is advantageous to add another crossbeam and more Guide parts and, if desired, also some parts of the next pillar on the main beam immediately in front of the to fix a pair of pillars already erected (see Fig. 8), before moving the main beam further forward over the obstacle. The pillars will be added after they have been erected nor by ropes, which are shown, for example, by the dashed lines in FIGS. 8 to 10, anchored.

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Claims (13)

Patent claims: 1. Bridge construction method, according to which by means of an at least partially assembled main bridge girder Obstacles are bridged, characterized in that first the bridge main girder is known per se Way brought over the obstacle in question or at least partially advanced over this and then after and support pillars are lowered from one or more positions along the main girder. 2. Bridge building method according to claim 1, characterized in that the pillars by tubular guide parts lowered through and then attached to these guide parts, the latter in a suitable Connected to the main girder at the stage of bridge construction. 3. Bridge building method according to claim 2, characterized in that at least one cross member at each end each one of the guide parts is attached, and that the cross member below the main beam transversely runs and is attached to this. - 17 009813/1269 4. Bridge construction method according to one of claims 1 to 3a, characterized in that each pillar consists of one Plurality of pillar parts is put together, the latter one after the other at their successive ones Ends are connected to each other. 5 «bridge building method according to claim 2 or 3» characterized in that each pillar consists of one! A large number of pillar parts are each assembled in such a way that first one pillar part is lowered through the guide part and then held therein, that then another pillar part is attached to the upper end of the first-mentioned pillar part above the guide part and then lowered by the guide part and then inside is held, and that in the same way further j such pillar parts are added as required,) so that a pillar of sufficient length is obtained, and ; that finally the top part of the pillar on the guide part is attached and thus carries the main bridge girder. 6. Bridge construction method according to claim 5, characterized in that a foot over a at a certain Tensile load tearing intermediate part is connected to the first installed pillar part, as long as the latter - 18 009813/1269 JS is still held by the guide part. 7. Bridge construction method according to one of claims 2, 3, or 6, characterized in that the pillars with the help of Lifting devices are lowered, which latter are each attached to the guide parts and connecting parts have, through which the pillars can be detachably connected to the lifting devices. 8. Bridge construction method according to claim 7 »thereby characterized in that the bridge main girder is raised in relation to the piers with the aid of the lifting devices after the pillars have been fully lowered, but before the pillars are attached to the guide parts have been that a slack in the 3 back main beam is eliminated or avoided. 9 · Bridge erected according to the »Procedure after a of claims 1 to 8, which have a main bridge girder and at least one transverse under the main girder Having cross members and a plurality of support pillars for supporting the main beam, characterized in that that the pillars (10) extend through the guide parts (12) extend down through and are attached to this - 19 00981 3/1269 and that the guide parts are each at the ends of the cross member or the cross member (13) are attached. 10. Bridge according to claim 9, characterized in that each pillar has a plurality of pillar parts (10), the latter each at their successive ends are releasably connected to each other. 11. 3back according to claim 9, the main beam of which has a plurality of main beam parts connected to one another, characterized in that the main beam parts (2) are connected to one another by beam connecting devices (3) are, which latter each have a pair of connecting elements (30), of which the latter each have the one is connected to the one and the other to the other of the respective adjoining main support parts and which are each hingedly connected to one another at their, for example, upper ends (31), while the, for example lower ends of these connecting elements via a clamping device (32) are in direct contact with one another, by means of which the angle between the connecting elements and thus the angle between the interconnected main support parts (2) can be changed and also a rigid belt connector (33) each detachable with the lower ends of the - 20 0098 13/1269 Connecting elements is connected, through each of which a certain angle between the connecting elements is maintained. 12. Bridge according to one of claims 9 to 11, characterized characterized in that at the lower parting end (10) via an intermediate part which tears under a certain tensile load (28) a support leg (16) is attached. 13. Guide device for carrying out the bridge construction process according to one of claims 2, 3 »5 or 8, characterized by a tubular body (12, 12a), through which the piers can be lowered, further by means for connecting this body to the main bridge girder (1) or with a part (13, 13a) assigned to it and finally by at least one on the Body (12, 12a) attached lifting device (21, 26), by means of which the pillar in question through this tubular Body can be lowered through it. - 21 00981 3/1269