US2870518A

US2870518A - Mobile form for the concrete moulding of barrel vaults, tunnels, galleries, or shafts

Info

Publication number: US2870518A
Application number: US528790A
Authority: US
Inventors: Bossner Josef
Original assignee: Individual
Current assignee: Individual
Priority date: 1954-08-19
Filing date: 1955-08-16
Publication date: 1959-01-27
Anticipated expiration: 1976-01-27

Description

Jan. 27, 1959 J. BssNER 2,870,518

MOBILE FORM FOR THE CONCRETE MOULDING OF' BARREL VAULTS, TUNNELS. GALLERIES, OR SHAFTS Filed Aug. 16. 1955 6 Sheets-Sheet 1 fIN VEN T02 Jos-F 5am-Ns@ Jan. 27, 1959 J. BssNER 2,870,518

MOBILE FORM FOR THE CONCRETE MOULDING OF BARREL VAULTS, TUNNELS, GALLERIES, OR SHAF'TS Filed Aug. 16. 1955 6 Sheets-Sheet 2 5: n n *vf- T 'u Jan. 27, 1959 J. BssNER 2,870,518

MOBILE FORM FOR THE CONCRETE MOULDING OF' BARREL VAULTS, TUNNELS, GALLERIES, OR SHAFTS Filed Aug. 16. 1955 6 Sheets-SheenI 3 Jan. 27, 1959 J. BssNER 2,870,518

MOBILE FORM FOR THE CONCRETE MOULDING OF' BARREL vAuLTs, TUNNELs, GALLERIES, oa sHAFTs 6 sheetsshed 4 Filed Aug. 16. 1955 IN1/EN Tae JassF Bass/vae 37 v /Z M cf 7,73% frae/vf Jan. 27, 1959 J. BssNER 2,870,518

MOBILE FORM FOR THE CONCRETE MOULDING OF BARREL VAULTS, TUNNELS, GALLERIES, OR SHAFTS 6 Sheets-Sheet 5 Filed Aug. 16. 1955 Jam 27, 1959 J. BssNER 2,870,518

MOBILE FORM FOR THE CONCRETE MOULDING OFBARREL VAULTS, TUNNELS, GALLERIES, OR SHAFTS Filed Aug. 16. 1955 6 Sheets-Sheet 6 l l I I/V Vf/V TUA Josef 5055 N5@ United States Patent O MOBILE FORM FOR THE CONCRETE MOULDING OF BARREL "VAULTS, TUNNELS, GALLERIES, OR SHAFTS Josef Bssner, Bad Aibling, Germany Application August 16, 1955, Serial No. 528,790

Claims priority, application Germany August 19,1954

7 Claims. (Cl. 25131.6)

This invention relates to a mobile or displaceable form for the concrete moulding of barrel vaults, tunnels, galleries, or shafts, comprising a travelling carrier and an expandible and collapsible wall structure.

According to the invention the carrier and the associated wall structure are constructed in such a manner that, after the wall structure has been expanded and the concrete filled in, the carrier alone can be collapsed, the wall structure remaining expanded in a self-supporting position until, after setting of the concrete, it is removed by means of the carrier which has been moved back to its original location, and can be transported to another location for further use.

The construction of the carrier and the wall structure according to the invention results in an extremely simple and economical method for the concrete moulding of barrel vaults, tunnels, galleries, or shafts. This method consists in first moulding a section of the concrete construction corresponding in length to the length of the wall structure (for example 18 ft.) and then transferring the carrier to theadjacent section for the purpose of moulding this section with the help of another wall structure, while the concrete supported by the expanded wall structure in the first section is allowed to set.

It may be readily seen that-depending on the setting time of the concrete-it is possible in this mannery to carry out a continuous moulding process with the help of a third, or even a fourth, wall structure when the -conditions are so chosen that after setting of the concrete in one section, the corresponding wall structure may be removed and reinstalled, for example in the fifth section, while the concrete in the second, third, and fourth section is allowed to set.

According to a further feature of the invention, the carrier is made mobile by providing it on both sides with rollers adapted to travel on rails laid on the building site, the carrier leaving a door-shaped passage in which, for example, further rails may be laid for the circulation of lorries serving to transport the rock which has been removed by blasting or the like.

Further features and advantages of the invention will become apparent from the following description of various embodiments given by way of example only and with reference to the accompanying drawings, in which Fig. l shows a cross section through a gallery under construction, with a concrete form according to the invention installed, shortly after filling-in of the concrete;

Fig. 2 is a longitudinal sectional view of the concrete form shown in Fig. l, taken in the vertical median plane and showing the inside of the expanding carrier;

Fig. 3 is a view of the inside of the wall structure;

Figs. 3a and 3b show constructional details of the wall structure;

Fig. 4 is a view corresponding to Fig. 1 and showing the wall structure in its expanded self-supporting position, as well as in its collapsed position in which it is supported by the collapsed carrier and Figs. 5 and 6 show a concrete form according to the 2,870,518 atented Jan.. 27, 1959 ICC 2 invention as applied for the concrete moulding of a vertical shaft, Fig. 5 corresponding to the representation of Fig. l, and Fig. 6 to that of Fig. 4.

Referring first to Fig. l of the drawings, reference numeral 1 designates a sole of gravel concrete or poor concrete, which is first laid on the floor of the gallery, and on which subsequently are laid the bases or planks 2 supporting the rails for the mobile carrier. As will become apparent from the following description, the bases 0 2 also serve as abutments for the

wall structure

16, 14, 11,

14', 16' in its expanded self-supporting position. Adapted to travel on the aforementioned rails isthe

carrier

3, 3 mounted thereon are

posts

4, 4 which are adapted to be lifted and lowered by means of one winch of a plurality of Winches 19.

Posts

4, 4 carry the expanding

shellshaped members

7, 8 and 8' which are hingedly connected with each other at 10 and 10'. The outer expanding

members

8 and 8 are furthermore articulated to the carrier 3 by means of screw struts 5, 5'.

As may be seen from Fig. 1, the carrier 3, 3' forms a door-like pasage in which, on suitably installed rails, may travel lorries 17 serving to transport the rock that has been removed by blasting or the like out from the end of the gallery. A further passage is left free in the upper part of the carrier, in which, for example, may be laid a Ventilating pipe line 31, without interfering with the movement of the carrier.

The carrier supports the wall structure of the form, which is likewise comprised of a plurality of shell-shaped members, with shell-shaped members 14 and 14' being hingedly connected at 13 and 13' respectively, with the central member comprising the sections 1l, 1.2and i2. Adjoining the

members

14, 14 on both sides are

end members

16, 16 which are adapted to be sealingly co'nnected with the members 14, 14' in a manner to be described below. As may be seen from Fig. 4, the wall structure comprising the two side members 14, 14' and the central member rests in its collapsed position on the expanding

members

8, 7, respectively 8', which after removal of the screw struts 5, 5 and with retracted posts 4, 4', assume the position shown in Fig. 4. The

end members

16, 16 are actuated by special Winches 18 which by means of ropes are operatively connected on one side with vertically displaceable lifting carriages 18', and on the other side with the end members 16 of the wallstructure in such a manner, that the end members 16 may be moved from their expanded position into the collapsed position shown in Fig. 4 by actuating the Winches 1S, after the connection between the end members 16 and their adjacent side members 14, 14' has been released. Reversely, the wall structure is brought from its collapsed position into its expanded position (both shown in Fig. 4) by first actuating the Winches 19 to lift the

posts

4, 4. The expanding members 8, 8' are then swung outwardly by means of the screw struts 5, 5', whereupon the

end members

16, 16 of the wall structure are moved outwardly by actuating the Winches 1S, so that they may be connected, in a manner to be described below, with the members 14, 14', which have already been swung out before. For this purpose the ropes attached to the ends of the

members

16, 16 may be passed over winch pulleys having a greater diameter than the pulleys over which pass the ropes attached to the carriage 13', as shown in the drawings, in order to attain the required pivotal movement of the members 16, 16'.

in order to stiffen the wall structure in the expanded position, a rigid and tight connection is established between the side members14, 14- and the

end members

16, 16 in the manner to be hereinafter described. This connection can readily be released, in order to permit the wall structure-to be collapsed again.v

Fig. 3 shows. the construction et the wallstrueture eerdere which is assembled from suitably curved sheet metal members. As shown in Fig. 3a, these members are stiffened by welded-on webs and bolted together.

The articulated joints 13, 13' provided between the central member Ill and the side members i4, 14 are formed as hinges in such a manner that short tubular sections 3%', 30 are rotatably mounted on a continw ous pipe 3f?, said tubular sections being alternately welded to webs of the members i2, lwhich are to be connected, and each section adapted to move in n circular recess in the web of the opposite member.

As shown in Figs. 3 and 3b, the connection between the

side members

14, 14 and the end members 16, i6' may be effected by means of pivotable bolts which are attached to the one member and engage in corre ing slots provided in the other member. ior the joint between the tow members to be conne ed, these members are each provided with profiles forming a chamber l at the point, into which may be placed a continuous hose 9, as shown in Fig. 3b. in the expanded position of the wall structure, the hose 9 is filled with compressed air or water, so that it is pressed against the walls of the chamber 15 and thus acts at the same time as a stitening and sealing member. Due to the above described construction of the articulation and of the joint, and also on account of the manner in which the wall structure is assembled, the latter presents a practically smooth outer surface, so that the inner wall surface of the moulded concrete gallery will also be completely smooth.

The carrier and wall structure of the above described concrete moulding form are used as follows:

For the concrete moulding of a gallery section, the carrier with the wall structure is rst moved into the section under construction, in the collapsed position as shown in Fig. 4. The carrier with the wall structure is then lifted, expanded and stiffened in the manner previously described, so that it assumes the position shown in Fig. l. Following this, the concrete is filled in, the end faces having previously been closed in the known manner. After the concrete has been filled in, the carrier is disconnected from the wall structure and is then lowered, respectively collapsed, so that the wall structure may self-supportingly remain in position as shown in Fig. 4, until the concrete has set to such a degree that the wall structure can be removed again with the help of the carrier which has been moved back to its original location.

While the concrete in the first section is allowed to set, the carrier is used for moulding the adjoining section the length of which corresponds to the length of the respective wall structure) with the help of a second wall structure. Depending on the time necessary for the setting of the concrete, it is then possible to mould a third or fourth section, etc., using either a further wall structure or the wall structure that has previously been installed in the first, second, etc. section. ln this manner it is possible to carry out an almost continuous concrete moulding process, in which the waiting time between the moulding of two adjoining sections of a gallery is reduced to a minimum.

in a correspondingly modified embodiment, the invention may also be applied to the concrete moulding of vertical shafts. As may be seen from Figs. 5 and 6, a frame or box-shaped cirrier 2f) suspended on ropes or chains and adapted to be lowered into the shaft to be moulded, is used in this application. Mounted symmetrically on both sides of the carrier 2t) are pairs of expanding

struts

21, 21 adapted to be actuated by hydraulic or

pneumatic actuating cylinders

22, 22 for imparting an outward or inward movement to the expanding

members

24, 25 and 25'. Pivotably mounted struts 23, Z3 which may be actuated by pneumatic or hydraulic means may further be provided for moving the end members Z5, 25 in an outward or inward direction.

The carrier supports the wall structure comprising the central members 26 and

theside members

27, 27

abutments

29, 29 being provided for preventing the wall structure from sliding off the carrier under the effect of its own weight. After the carrier has been collapsed and retracted, the wall structure is supported by the shrinking pressure of the concrete, but concrete tiebolts with threaded sleeves, which are known as such, may be used as additional securing means.

Otherwise, the mode of operation and the working process generally correspond to the method for the concrete moulding of a gallery, as previously described. As distinct from the concrete moulding of galleries, special means may conveniently, be used in order to assure that the carrier suspended on ropes or chains will always remain in a centered position. These means may, for example, comprise pins 28, 28 adapted to be advanced and retracted hydraulically or pneumatically, the length of which corresponds to the desired thickness of the concrete wall, and which are circumferentially spaced in such a manner that the central position of the carrier is assured prior to the filling-in of the concrete. Immediately after the concrete has been filled in these pins may be retracted.

When the carrier is not suspended on ropes or chains, but is guided in elevator fashion on sliding rails, the previously described pins may be obviated.

The frame-like construction of the carrier 2@ presents the advantage that it leaves a very wide passage through which the rocl; excavated at the bottom of the shaft, or the necessary excavating equipment, may be conveyed into and out of the shaft without interfering with the concrete moulding work.

The invention is not limited to the embodiments described and illustrated. Thus, the wall structure may be expanded and stiffened in numerous different ways in order to ensure that, after it has been installed with the help of the carrier, it can remain in position after the concrete has been filled in, while the carrier together with another wall structure can be used for moulding the adjoining section.

What I claim is:

l. A mobile concrete form means comprising a carrier and a wall structure having a collapsed and an expanded position; said carrier including a plurality of expandable and collapsible shell-shaped members and actuating means therefor; hinge means interconnecting said shell-shaped members; at least a rst part of said wall structure being removably supported by said shell-shaped members and being movable from said coliapsed to expanded position by said actuating means acting thro-ugh said shell-shaped members.

2. The mobile concrete form means as set forth in claim 1 in which the wall structure further includes two end members operatively connectible to said carrier; said end members being positionable to abut the ends of the first part of the wall structure after said first part is in the expanded position to form joints therebetween; said end members being detached from said first part when said wall structure is in the collapsed position.

3. The mobile concrete form means as set forth in claim 2 in which each joint comprises a chamber; a fiexible conduit entered into said chamber for the entry of fiuid therein; said conduit when filled with said uid cooperating with said chamber to act as a stiffening means and as a fitting means between the end member 5. A mobile concrete form means comprising a carrier-v and a wall structure having a collapsed and an expanded position; said carrier including a plurality of expandable l and collapsible shell-shaped members and actuating means therefor; hinge means interconnecting said shellshaped members; said wall structure including a iirst part and two end members; at least said first part of said wall structure being removably supported by said shellshaped members and being movable between said collapsed and expanded positions by said actuating means acting through said shellshaped members; said end members operatively connectible to and detachable from said carrier; said end members being positionable to abut the ends of said first part of the wall structure when said first part is in the expanded position; said wall structure when expanded forming an open circle; two parallel spaced abutments each having an inclined surface; the ends of said circle being positioned on said inclined surfaces;lsaid wall structure being constructed to remain in its expanded circular form after the shell-shaped members have been collapsed immediately following the pouring of concrete.

6. A mobile concrete form means comprising a carrier and a wall structure having a collapsed and an expanded position; said carrier including a plurality of expandable and collapsible shell-shaped members and actuating means therefor; hinge means interconnecting said shellshaped members; said wall structure including a first part and two end members; at least said first part of said wall structure being removably supported by said shellshaped members and being movable between said collapsed and expanded positions by said actuating means acting through said shell-shaped members; said end members operatively connectible to and detachable from said carrier; said end members being positionable to abut the ends of said first part of the wall structure when said first part is in the expanded position; said wall structure when expanded forming an open circle; two parallel spaced abutments; the ends of said circle being positioned on said abutments; rollers operatively connected t-o said carrier; rails mounted on said abutments; said rollers being mounted on said rails and guided thereby; said wall structure being constructed to remain in its expanded circular form after the shell-shaped members have been collapsed immediately following the pouring of concrete.

7. A mobile concrete form means comprising a carrier having a collapsed and an expanded position, said carrier comprising a projectable and retractable portion; a supporting frame consisting of a central member and side members hingedly connected to said carrier, said members being shell-shaped, said central member being secured to said projectable and retractable portion of the carrier; a wall-structure comprising a central member and side members hingedly connected thereto; said members of said wall-structure being removable supported by said members of said supporting frame and being movable from a collapsed to an expanded position by actuating means acting through the members of the supporting frame.

References Cited in the file of this patent UNITED STATES PATENTS 920,448 Fisher May 4, 1909 1,016,284 Meek et al Feb. 6, 1912 1,234,357 Loxterman July 24, 1917 1,252,093 Davidson Ian. l, 1918 1,298,941 Harry et al Apr. l, 1919 1,788,200 Molin et a1. Jan. 6, 1931 1,927,256 Copeland et al Sept. 19, 1933 2,306,503 Sarosdy Dec. 29, 1942 2,579,423 Ford Dec. 18, 1951 FOREIGN PATENTS 13,054 Great Britain 1912 360,146 Great Britain Nov. 5, 1931