KR102258959B1 - Manufacturing methode of girder with anchorage hole for maintenance - Google Patents

Abstract

The present invention is a maintenance fixture manufacturing apparatus for forming a maintenance fixture so as to increase the performance by tensioning the PS steel material for maintenance on a concrete girder, PSC girder, steel girder, or steel girder, the girder the anchorage trumpet mold embedded in the concrete anchorage block of and a fixture trumpet mold drawing device for drawing out the anchorage trumpet mold, wherein the anchorage trumpet mold drawing device includes: a connecting rod coupled to the anchorage trumpet mold and extending rearward; a reaction force plate coupled to the rear of the connecting rod; and a hitting scale installed so as to be slidably movable on the connecting rod; and, after the concrete of the concrete anchoring block is hardened, the anchorage trumpet mold is pulled out by hitting or pressurizing the hitting scale, so that the concrete anchoring block is placed on the concrete anchoring block. It relates to an apparatus for manufacturing a fixture for maintenance, characterized in that a fixture for maintenance in the shape of a trumpet mold is formed. By drawing the anchor trumpet mold using the post anchorage trumpet mold drawing device, it is possible to provide the effect of constructing a maintenance anchor with excellent economic efficiency and constructability from which the anchorage trumpet mold has been removed.

Description

Manufacturing method of girder with anchorage for maintenance {Manufacturing methode of girder with anchorage hole for maintenance}

The present invention relates to an apparatus for manufacturing a fixture for maintenance and a method for manufacturing a girder having a fixture for maintenance using the same.

In general, in the case of concrete, PSC (prestressed concrete), steel or composite girder, the rigidity of the girder can be increased or the girder can be reinforced by arranging PS steel for maintenance during long-term use. In order to fix the PS steel for maintenance to the girder, it is necessary to attach and install the steel trumpet for maintenance on the girder in advance when manufacturing the girder. This is a structure in which steel trumpet for maintenance is installed on the girder in advance in preparation for maintenance required during long-term public use.

The structure may cause a problem in that the construction cost of the girder increases because the cost of installing the maintenance steel trumpet is pre-injected at the time of girder construction for maintenance that may or may not be used during public use for a long period of time.

As a technique for solving the above problems, Republic of Korea Patent Registration No. 10-0814387 “Method for constructing a prestressed concrete girder equipped with an economical maintenance fixing device” is disclosed. This prior art is a prestressed concrete girder (10 ), in the concrete anchorage block 14 for maintenance where the steel anchorage 12 for maintenance is installed, the home anchorage 16 in the form of a steel anchorage for maintenance is pre-buried together with the maintenance sheath 18 for formwork. And, if maintenance is required during common use, insert and install a maintenance steel fixture 12 in the home fixture 16, and insert and install PS steel 20 in the maintenance steel fixture 12 for maintenance It relates to a method for constructing a prestressed concrete girder equipped with an economical maintenance anchorage device (refer to claim 1), characterized by introducing the necessary tension to the If the fixture is installed first, and if maintenance is required, the maintenance steel fixture is inserted into the home fixture, and a prestressed concrete girder equipped with a fixture for maintenance can be manufactured without an additional increase in construction cost in the initial stage, If you insert and install a maintenance steel fixture into the home fixture only when it is needed during public use, and insert and install PS steel, you can reduce the cost of additionally installing a separate maintenance fixture during public use. An object of the present invention is to provide a prestressed concrete girder construction method equipped with an economical maintenance fixing device to reduce costs.

However, in the prior art, the steel anchorage 12 is installed while the home anchorage 16 for maintenance is left in the concrete anchorage block, or the steel anchorage 12 is installed after the home anchorage 16 is removed. When the steel anchorage 12 is installed with the home anchorage 16 remaining, the home anchorage 16 formed of resin, rubber, metal, reinforcing fiber, concrete, wood, stone, etc. is assumed by the strong tension of PS steel. The mounting 16 is damaged and the direction of the PS steel is changed, and the tension strength may be lowered. In addition, since the home anchorage 16 exists between the steel anchorage 12 and the concrete anchorage block 14 , there may be a problem in the adhesion between the steel anchorage 12 and the concrete anchorage block 14 . In addition, when the steel anchorage 12 is installed after the home anchorage 16 is removed, there is a problem in that it is not easy to remove the home anchorage 16 attached to the concrete anchorage block 14 .

Therefore, the development of a technology capable of improving the above problems is required.

Patent 1: Republic of Korea Patent Registration 10-0814387

In order to solve the above problems, the present invention uses the anchorage trumpet mold as a form when constructing the girder so that the anchorage for maintenance is formed on the concrete anchorage block, and then easily draws it out using the anchorage trumpet mold drawing device, An object of the present invention is to provide an apparatus for manufacturing a fixture for maintenance that can form a fixture for maintenance with excellent economic efficiency and constructability, and a method for manufacturing a girder equipped with a fixture for maintenance using the same.

Maintenance for forming a fixture for maintenance according to an example of the present invention is to increase the performance by tensioning the PS steel for maintenance on a concrete girder, PSC girder, steel girder, or steel composite girder. A fixture manufacturing apparatus for management, comprising: a fixture trumpet mold embedded in a concrete anchoring block of the girder; and a fixture trumpet mold drawing device for drawing out the anchorage trumpet mold, wherein the anchorage trumpet mold drawing device includes: a connecting rod coupled to the anchorage trumpet mold and extending rearward; a reaction force plate coupled to the rear of the connecting rod; And it may include a; and a hitting scale that is installed to be slidably movable on the connecting rod.

In addition, after the concrete of the concrete anchoring block is hardened, the anchorage trumpet mold is pulled out by hitting or pressing the reaction force plate with the striking scale, whereby the anchorage for the maintenance of the anchorage trumpet mold shape is formed on the concrete anchoring block can be characterized as

In addition, the anchorage trumpet mold drawing device may include: a second hitting scale installed in front of the hitting scale and slidably installed on the connecting rod; a triangular bracket connecting the hitting scale and the second hitting scale; It may include a pair of hydraulic jacks installed between both ends of the triangular bracket and the concrete anchoring block, wherein the hydraulic jack strikes or presses the triangular bracket.

In addition, the coupling of the connecting rod and the anchorage trumpet mold is a bonding coupling plate installed in contact with the anchorage trumpet mold; a bonding bolt for coupling the bonding bonding plate and the anchorage trumpet mold; It may be characterized in that it comprises a; coupling plate fixture coupled to the front end of the connecting rod passing through the bonding coupling plate.

In addition, the coupling of the connecting rod and the anchorage trumpet mold further includes a screw bolt having a screw formed on the outer circumferential surface and coupled to the front of the connecting rod, and the screw of the outer circumferential surface of the chain bolt is screwed into the inside of the anchorage trumpet mold can be characterized.

In addition, the method for manufacturing a girder equipped with a maintenance anchorage according to an example of the present invention is for maintenance so as to increase the performance by tensioning with PS steel for maintenance on a concrete girder, PSC girder, steel girder, or steel composite girder A method of manufacturing a girder having an anchorage, the method comprising: burying an anchorage trumpet mold in the concrete anchoring block while forming a concrete anchoring block in the girder; After the concrete of the concrete anchoring block is hardened, installing the anchorage trumpet mold drawing device to the anchorage trumpet mold; Forming a fixture for maintenance of the anchorage trumpet mold shape on the concrete anchoring block by drawing the anchorage trumpet mold with the anchorage trumpet mold drawing device; manufactured in order, the anchorage trumpet mold drawing device, the anchorage trumpet a connecting rod coupled to the mold and extending rearward; a reaction force plate coupled to the rear of the connecting rod; And it may be characterized in that it comprises a; and a striking scale installed so as to be slidably movable on the connecting rod.

In addition, the anchorage trumpet mold drawing device includes: a second hitting scale installed in front of the hitting scale and slidably installed on the connecting rod; a triangular bracket connecting the hitting scale and the second hitting scale; It may include a pair of hydraulic jacks installed between both ends of the triangular bracket and the concrete fixing block, wherein the hydraulic jack strikes or presses the triangular bracket.

In addition, the coupling of the connecting rod and the anchorage trumpet mold is a bonding coupling plate installed in contact with the anchorage trumpet mold; a bonding bolt for coupling the bonding bonding plate and the anchorage trumpet mold; It may be characterized in that it comprises a; coupling plate fixture coupled to the front end of the connecting rod passing through the bonding coupling plate.

In addition, the coupling of the connecting rod and the anchorage trumpet mold further includes a screw bolt having a screw formed on the outer circumferential surface and coupled to the front of the connecting rod, and the screw of the outer circumferential surface of the chain bolt is screwed into the inside of the anchorage trumpet mold can be characterized.

Through the present invention, when constructing a girder, the anchorage trumpet mold is used as a formwork to form a maintenance anchor on the concrete anchorage block, and then easily pulled out using the anchorage trumpet mold drawing device. A settlement can be formed.

1a to 1c are views showing the appearance of a girder provided with an anchorage for maintenance according to an example of the present invention.
2a to 2i are partially enlarged views of a girder provided with an anchorage for maintenance according to an example of the present invention.
3A and 3D are views showing an anchorage trumpet mold drawing apparatus according to another example of the present invention.
4 is a diagram of the prior art.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to elements of each drawing, the same elements are assigned the same numerals as possible even if they are indicated on different drawings. In addition, in describing an embodiment of the present invention, if it is determined that a detailed description of a related well-known configuration or function interferes with an understanding of an embodiment of the present invention, a detailed description thereof will be omitted.

In addition, in describing the constituent elements of an embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are for distinguishing the constituent element from other constituent elements, and the nature, order, or order of the constituent element is not limited by the term. When a component is described as being "connected", "coupled" or "connected" to another component, that component may be directly connected or connected to that other component, but another component between each component May be “connected”, “coupled” or “connected”.

Hereinafter, with reference to FIGS. 1 to 3, an apparatus for manufacturing a fixture for maintenance according to an example of the present invention and a method for manufacturing a girder equipped with a fixture for maintenance using the same will be described in detail.

A fixture manufacturing apparatus for maintenance according to an example of the present invention increases the performance by tensioning the PS steel for maintenance on the concrete girder 10, the PSC girder 10, the steel girder 10, or the steel composite girder 10 In the maintenance anchorage manufacturing apparatus 30 for forming the maintenance anchorage 20 so as to be able to do so, the anchorage trumpet mold 32 embedded in the concrete anchorage block 12 of the girder 10; and a fixture trumpet mold drawing device 34 for drawing out the anchorage trumpet mold 32 .

This embodiment may be applied to a concrete girder 10 , a PSC girder 10 , a steel girder 10 , or a steel composite girder 10 . In the case of the steel girder 10, the concrete fixing block 12 may be separately formed at an appropriate location. The girders 10 may be I-shaped, U-shaped, box-shaped girders, or the like.

The anchorage 20 for maintenance is to increase the rigidity of the girder 10 during the long-term use of the girder 10 or install a steel trumpet, which is a fixing device, if you want to additionally tension with PS steel to reinforce the girder 10. hole that can be

The anchorage trumpet mold 32 may be installed to be embedded in the concrete anchoring block 12 of the girder 10 . The anchorage trumpet mold 32 is a form for forming the anchorage 20 for maintenance, and the outer peripheral surface may be formed in a shape in which a steel trumpet can be well inserted and seated. For example, it may be formed in a cone shape whose diameter gradually decreases toward the front.

The concrete fixing block 12 may be convexly protruding from the girder 10 or concave in shape. For example, it may be formed protruding from the side of the abdomen of the I-shaped girder 10, or formed to protrude convexly below the upper flange.

The anchorage trumpet mold 32 is installed to be embedded in the concrete anchoring block 12 , and is taken out and removed after the concrete is hardened, thereby forming the anchorage 20 for maintenance on the girder 10 .

The anchorage trumpet mold 32 can be easily drawn out from the concrete anchorage block 12 by the anchorage trumpet mold drawing device 34 to be described later.

The anchorage trumpet mold drawing device 34 includes a connecting rod 342 coupled to the anchorage trumpet mold 32 and extending rearwardly; a reaction force plate 344 coupled to the rear of the connecting rod 342; And it may include a; and a striking scale 346 installed to be slidably movable on the connecting rod 342 .

The connecting rod 342 may be coupled to the anchorage trumpet mold 32 . The coupling of the connecting rod 342 and the anchorage trumpet mold 32 may include a bonding coupling plate, a bonding bolt, and a bonding plate fixture.

The bonding plate may be installed in contact with the rear of the anchorage trumpet mold 32 . The bonding plate may be formed in a plate shape covering the entire rear of the anchorage trumpet mold 32 or may be formed in a band shape. The bonding plate may be formed by significantly reducing its size in consideration of only the minimum coupling with the anchorage trumpet mold 32 .

A screw hole to which a bonding bolt can be coupled may be formed in the anchorage trumpet mold 32 . A hole corresponding to the screw hole formed in the anchorage trumpet mold 32 may be formed in the bonding plate. The bonding coupling plate and the anchorage trumpet mold 32 may be coupled by bonding bolts.

A through hole through which the connecting rod 342 may pass may be formed in the central portion of the bonding coupling plate. The front of the connecting rod 342 may be coupled to the coupling plate fixture to the front end after penetrating the through hole in the central portion of the bonding coupling plate. The coupling plate fixture may be formed to have a larger diameter than the diameter of the through-hole in the center of the bonding coupling plate.

A reaction force plate 344 may be coupled to the rear of the connecting rod 342 . The connecting rod 342 may be installed so that the hitting scale 346 is slidably movable. The hitting scale 346 may have a hole formed in the center so as to be slidable after the connecting rod 342 is inserted. The anchorage trumpet mold 32 embedded in the concrete anchoring block 12 can be drawn out by repeatedly slidingly striking or pressing the striking chain 346 on the connecting rod 342 backward, that is, in the direction of the reaction plate 344. . The hitting of the hitting scale 346 may be performed in a form in which the operator throws the reaction force plate 344 direction by hand. This striking operation can be drawn out very efficiently by precisely applying a backward force to the anchorage trumpet mold 32 .

Another embodiment of the anchorage trumpet mold drawing device 34 is a second hitting scale 348 that is installed in front of the hitting scale 346 and slidably on the connecting rod 342, and the hitting scale 346 and a pair of hydraulic jacks 40 installed between both ends of the triangular bracket 349 and the concrete anchoring block 12 and a triangular bracket 349 connecting the second strike scale 348 and the hydraulic jack (40) may be characterized in that hitting or pressing the triangular bracket (349).

The second hitting scale 348 may be installed to be slidably movable on the front connecting rod 342 of the hitting scale 346 . The hitting scale 346 and the second hitting scale 348 may be interconnected by a triangular bracket 349 . That is, by the triangular bracket 349, the strike scale 346 and the second strike scale 348 are integrated to act integrally to strike or press the reaction force plate 344. The triangular bracket 349 includes a pair of first brackets inclined forwardly on both sides of the hitting scale 346 and a pair of second brackets installed in the left and right directions on both sides of the second hitting scale 348 Brackets may be coupled to form.

A pair of hydraulic jacks 40 may be installed at both vertices where the first bracket and the second bracket meet. That is, the hydraulic jack 40 may be installed at both ends of the triangular bracket 349 as a coupling portion to which the first bracket and the second bracket are coupled.

The hydraulic jack 40 hits or pressurizes the triangular bracket 349 so that the hitting scale 346 hits or presses the reaction force plate 344 coupled to the rear of the connecting rod 342, so that the anchorage trumpet mold 32 is made of concrete. It can be easily drawn out from the fixing block 12 .

Another embodiment of the coupling of the connecting rod 342 and the anchorage trumpet mold 32, a screw is formed on the outer circumferential surface and further includes a chain bolt (not shown) coupled to the front of the connecting rod 342, It may be characterized in that the screw is screwed into the interior of the anchorage trumpet mold 32 . That is, the outer surface of the claw bolt may have a shape corresponding to the inner surface of the anchorage trumpet mold 32 . For example, it may be a shape in which a screw is formed on the outer circumferential surface of a conical shape whose diameter is gradually reduced toward the front. At the same time, screws may be formed on the inner surface of the anchorage trumpet mold 32 to be coupled to each other. In another shape, it is also possible that the inner surface of the trumpet mold 32 of the claw bolt and the anchorage has a cylindrical shape. In this embodiment, the connecting rod 342 and the anchorage trumpet mold 32 can be combined without a bonding plate. This embodiment can also be applied to the anchorage trumpet mold drawing device 34 using the hydraulic jack 40 .

The anchorage trumpet mold drawing device 34 draws out the anchorage trumpet mold 32 by striking or pressing the reaction force plate 344 using the striking scale 346 after the concrete of the concrete anchoring block 12 is hardened, It is possible to form the anchorage 20 for maintenance in which the anchorage trumpet mold 32 does not remain in the concrete anchorage block 12 .

Hereinafter, with reference to FIGS. 1 to 3, a method of manufacturing a girder equipped with a fixture for maintenance using the above-described fixture manufacturing apparatus for maintenance will be described in detail.

The method for manufacturing a girder equipped with an anchorage for maintenance according to an example of the present invention is a PS steel for maintenance on a concrete girder 10, a PSC girder 10, a steel girder 10, or a steel composite girder 10 In the manufacturing method of the girder 10 provided with the anchorage 20 for maintenance so as to increase the performance by tension, the concrete anchoring block 12 is formed while forming the concrete anchoring block 12 on the girder 10. burying the anchorage trumpet mold 32; After the concrete of the concrete anchoring block (12) is hardened, installing the anchorage trumpet mold drawing device (34) in the anchorage trumpet mold (32); Forming the anchorage 20 for maintenance in the shape of the anchorage trumpet mold on the concrete anchorage block 12 by drawing the anchorage trumpet mold 32 with the anchorage trumpet mold drawing device 34; have. In this embodiment, a description of the same configuration as the configuration described in the above-described embodiment may be omitted. In addition, the above description may be analogously applied to the configuration in which the description is omitted.

The step of burying the anchorage trumpet mold 32 is a step of burying the anchorage trumpet mold 32 when the concrete anchorage block 12 is formed on the girder 10 . That is, the anchorage trumpet mold 32 may be embedded in consideration of the arrangement direction of the steel trumpet, which is a fixing device for fixing PS steel for maintenance.

The step of installing the anchorage trumpet mold drawing device 34 is a step of preparing the drawing of the anchorage trumpet mold 32 by coupling the anchorage trumpet mold drawing device 34 to the rear of the anchorage trumpet mold 32 . In the case of bonding using a bonding bonding plate, the bonding rod 342 may be first coupled to the bonding bonding plate, and then the bonding bonding plate may be coupled to the anchorage trumpet mold 32 .

The step of forming the anchorage 20 for maintenance of the anchorage trumpet mold shape is to draw out the anchorage trumpet mold 32 with the anchorage trumpet mold drawing device 34, thereby maintaining the anchorage trumpet mold shape in the concrete anchorage block 12. This is a step to allow the management anchorage 20 to be formed. In this step, by repeatedly hitting or pressing the reaction force plate 344 coupled to the rear of the connecting rod 342 with the striking chain 346, the anchorage trumpet mold 32 can be drawn out from the concrete anchoring block 12. .

In addition, by using the hydraulic jack 40, the operator can operate the hydraulic jack 40 without directly hitting or pressurizing, so that the anchorage trumpet mold 32 can be easily drawn out from the concrete anchoring block 12 .

The girder 10 applied to this embodiment may be continuously connected by a continuous connecting steel material at the point portion. That is, it is possible to install a continuous connecting member for interconnecting the steel materials coupled to the upper flanges of the both sides of the girder 10 and fasten them with bolts and nuts. Tension by PS steel can be implemented as primary tension, secondary tension, maintenance tension, etc.

In the above, even if all the constituent elements constituting the embodiments of the present invention have been described as being combined into one or operating in combination, the present invention is not necessarily limited to these embodiments. That is, within the scope of the object of the present invention, all of the constituent elements may be configured or operated by selectively combining one or more. In addition, terms such as "include", "consist of" or "have" described above mean that the corresponding component may be present unless otherwise stated, excluding other components. It should not be construed as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art, unless otherwise defined. Terms generally used, such as terms defined in the dictionary, should be interpreted as being consistent with the meaning of the context of the related technology, and are not interpreted as ideal or excessively formal meanings unless explicitly defined in the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but to explain the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

10: girder
12: settling block
20: anchorage for maintenance
30: Fixture manufacturing device for maintenance
32: anchor trumpet mold
34: anchorage trumpet mold drawing device
342: connecting rod
344: reaction plate
346: strike scale
348: second strike scale
349: triangle bracket
40: hydraulic jack

Claims (9)

delete delete delete delete delete In the method of manufacturing a girder equipped with a maintenance fixture so as to increase the performance by tensioning the PS steel for maintenance on a concrete girder, PSC girder, steel girder, or steel girder,
burying the anchorage trumpet mold in the concrete anchoring block while forming the concrete anchoring block on the girder;
After the concrete of the concrete anchoring block is hardened, installing the anchorage trumpet mold drawing device to the anchorage trumpet mold;
Forming a fixture for maintenance in the shape of the fixture trumpet mold on the concrete anchoring block by drawing the anchor trumpet mold with the anchorage trumpet mold drawing device;
The anchorage trumpet mold drawing device,
a connecting rod coupled to the anchorage trumpet mold and extending rearward; a reaction force plate coupled to the rear of the connecting rod; and a hitting scale installed so as to be slidably movable on the connecting rod.
By striking or pressing the reaction force plate with the hitting scale, the anchorage trumpet mold is drawn out, whereby the anchorage for maintenance of the anchorage trumpet mold shape is formed on the girder,
a second hitting scale in front of the hitting scale and installed to be slidably movable on the connecting rod; a triangular bracket connecting the hitting scale and the second hitting scale; Further comprising a pair of hydraulic jacks installed between both ends of the triangular bracket and the concrete fixing block,
The hydraulic jack hits or presses the triangular bracket,
The triangular bracket includes a pair of first brackets inclined to the front on both sides of the striking scale and a pair of second brackets installed in the left and right directions on both sides of the second striking scale and connected to the first bracket including,
a bonding plate installed in contact with the anchorage trumpet mold; a bonding bolt for coupling the bonding bonding plate and the anchorage trumpet mold; A girder manufacturing method with an anchorage for maintenance, comprising: a coupling plate fixture coupled to the front end of the connecting rod passing through the bonding coupling plate.
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