KR101948026B1 - Pre-stressed concrete (psc) beam producing method for forming steel reinforcement assembly by connecting prefabricated segments of steel reinforcement assembly in construction field - Google Patents

Abstract

The present invention provides a method for manufacturing a prestressed concrete (PSC) beam forming a reinforcing bar assembly by connecting reinforcing bar assembly segments in a construction field. The method for manufacturing a PSC beam forming a reinforcing bar assembly can conveniently transfer multiple reinforcing bar assembly segments by using the multiple reinforcing bar assembly segments using a reinforcing bar assembly unit in a place such as a factory far from a construction field when manufacturing the PSC beam for construction of a PSC bridge. Also, the method for manufacturing a PSC beam forming a reinforcing bar assembly can easily manufacture the PSC beam by placing concrete and applying a tensile force after a reinforcing bar assembly in which the reinforcing bar assembly segments are combined is formed in the construction field. Also, the reinforcing bar assembly segment is assembled using the reinforcing bar assembly unit connected to a coupling block or a reinforcing bar support. So, the reinforcing bar assembly segment can be rapidly and accurately assembled and manufactured in a factory. Also, the reinforcing bar assembly segment can be easily connected in the construction field, and, therefore, the input of a worker in the construction field and work time can be remarkably reduced. So, construction periods can be reduced, and the economic PSC beam with high quality can be manufactured. The method for manufacturing a PSC beam can form the reinforcing bar assembly by connecting the reinforcing bar assembly segments in the construction field.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a PSC beam manufacturing method for forming a reinforcing bar assembly by connecting reinforcing assembly segments in the field,

The present invention relates to a method of manufacturing a PSC beam, and more particularly, to a method of manufacturing a PSC beam for the construction of a pre-stressed concrete (PSC) bridge, A PSC beam fabrication method in which a plurality of rebar assembly segments are manufactured and transported and a reinforcing bar assembly is formed by combining the reinforcing bar assembly segments in the field and then the concrete is laid, .

Recently constructed concrete bridges are constructed using PSC beams. In the case of such a bridge construction method, the PSC beam is produced on the ground and then transported to the construction site.

1 (a) is a side view showing a general PSC beam bridge, and Fig. 1 (b) is a perspective view showing a PSC beam.

As shown in Fig. 1 a), a beam is formed so as to be integrated with the PSC beam 1 after the both side ends of the PSC beam 1 are mounted on the alternating or pierced beam 2, and then the slab concrete 1 3) to construct a bridge. As shown in Fig. 1B, the PSC beam 1 required for such a method is formed so as to have a linear shape of the same shape along the direction of the throttle while basically maintaining an I-shaped cross section.

Since the length of the PSC beam 10, which is widely used as an upper structure of a bridge, is standardized, a series of work processes such as reinforcing and assembling, formwork installation, concrete pouring and tensional force introduction are repeated in the same pattern ought.

FIG. 2 is a view illustrating a reinforcing bar assembly disposed in a reinforced concrete beam according to a conventional technique.

The reinforcing bars 4 are manufactured such that reinforcing bars having various diameters and shapes are assembled with each other and extended in the longitudinal direction. The shapes and arrangement intervals of the reinforcing bars are determined according to the sectional force. For example, as shown in Fig. 2, longitudinal reinforcing bars 4a are arranged so as to surround the reinforcing bars 4f. These reinforcing bars 4f are spaced apart from each other in the longitudinal direction, .

The U-shaped band reinforcing bars 4c are arranged so as to surround the longitudinal bars 4a and the reinforcing bars 4f. The U-shaped band reinforcing bars 4c are spaced apart from each other in the longitudinal direction, (4c). Further, other member reinforcing bars 4b may be additionally provided depending on the purpose of use, and an annular bolt 4e may be provided for fastening the other reinforcing bars.

In this way, many reinforcing bars are placed inside the concrete inside the reinforced concrete beam, and the steel reinforcing bars are completed through the laying work of the reinforcing bars. However, quality control is inevitably difficult due to the work performed by most of the workers.

Of course, it is possible to construct an automated facility, but the required cross-section of the reinforced concrete beam is various. In case of using automated equipment for small-scale production, it is necessary to invest a lot of effort and effort, Most assembly work depends on the workforce.

As a prior art, Korean Patent Registration No. 10-1692356 discloses an invention entitled " Rebar Assembly Device using End Lift, Rebar Assembly Method Using It and Reinforced Concrete Beam " Explain.

3 is a perspective view showing a reinforcing bar assembling apparatus according to a conventional technique.

Referring to FIG. 3, a conventional rebar assembling apparatus includes a rebar assembly 10, a rebar assembly beam 20, an end lift 30, and a mainframe transportation support 40.

The reinforcing bar assembly 10 is a kind of steel base plate provided on a floor plate in a factory or the like, and is arranged so that both end lifts 30, 30a and 30b extend vertically at the upper end thereof. This reinforcing bar assembly 10 is constructed such that the reinforcing bars 51 are mounted on the reinforcing bar assembly beam 20 from one side end lift 30a to extend between the two end lifts 30, 30a and 30b, Is set in consideration of the length.

A sliding means 11 such as a roller is provided on the upper surface of the reinforcing bar assembly 10 so that the reinforcing bar assembly beam 20 on which the reinforcing bar assembly 20 loaded with the main steel reinforcing bars 51 can enter enters the side of the end lift 30a. So that they are spaced apart. At this time, to prevent the reinforcing bar assembly beam 20 from being separated from the upper surface of the reinforcing bar assembly 10 while being slid on the upper surface of the roller, the fixing table 12 may be provided on both sides of the roller.

The reinforcing bar assembly beam 20 serves as a support for placing the band bar 52 and the reinforcing bars 53 on the upper surface so as to be spaced apart from each other and setting the band bar reinforcement 52 and the reinforcing bars 53 ) As a kind of bogie that can transport the cast iron rods 51. At this time, the reinforcing bar assembly beam 20 uses a steel beam 21 such as an H-shaped beam, both ends of which form an end finishing plate 22, A carrier support 40 is mounted.

A fixing hole 23 is formed in the other end finishing plate 22 and a hinge rod 24 is formed on one side so that the fixing pin 23 of the rotary plate 31 mounted on the other end lift 30b 32 are inserted into the fixing hole 23 and the hinge rod 24 is seated on the hinge encapsulation zone 33 formed on the one end lift 30a.

The reinforcing bar assembly beam 20 moves right and left through the rollers of the reinforcing bar assembly 10 to transport the cast iron rods 51 and the reinforcing rods 51 and the reinforcing bar assembly bars 10, The reinforcing bar assembly 51 can be connected and assembled to the reinforcing bar assembly 53 by reducing the effort required to connect the reinforcing bar 52 and the reinforcing bar 53 to the reinforcing bars 51, It is possible to easily manage the quality of production of the display device 50.

The end lifts 30 are spaced apart from each other on the upper surface of the reinforcing bar 10 so that the reinforcing bar assembly beam 20 is positioned inside and both ends of the reinforcing bar assembly beam 20 can be raised and lowered When the assembly of the reinforcing bar assembly 50 is completed, the reinforcing bar assembly 20 has a function of rotating the reinforcing bar assembly beam 180 by 180 degrees.

The side end lift 30a on the side where the reinforcing bar assembly beam 20 enters enters the hinge encapsulation zone 33 for supporting the hinge rod 24 formed on the end finishing plate 22 of the reinforcing bar assembly beam 20, The end posts 31a are spaced apart from each other in the transverse direction so as to be opposed to each other, thereby forming a space in which the reinforcing bar assembly beam 20 can move.

The cast iron root support rods 40 are formed to include a rotary boom rope mounted on the ribs 25 of the steel beam 21 of the rebar assembly beam 20. Thus, the cast iron rope 51 is mounted in advance on the cast iron root conveyance support 40 of the reinforcing bar assembly beam 20 positioned at one side of the end lift 30a, and the cast iron rope 51 is mounted on the cast iron root carriage support 40 The reinforcing bar assembly beam 20 is carried together during the movement between the end lifts 30a and 30b.

According to the conventional reinforcing bar assembling apparatus, it is possible to easily assemble and assemble the reinforcing bars even when not a skilled worker, while making quality control easy in manufacturing a reinforcing bar assembly for producing a reinforcing concrete beam.

On the other hand, the reinforced concrete structure is constructed by longitudinally and horizontally arranging and securing a plurality of longitudinal reinforcing bars and transverse reinforcing bars, installing a mold outside the reinforcing bars, and pouring and curing concrete in these reinforcing bars.

Such reinforcing steel rods are usually constructed by an operator manually transporting the longitudinal reinforcing bars and transverse reinforcing rods to the reinforcing rods, or a method in which the roving ropes are transported to a roping position using a crane.

This reinforcing steel processing and assembling process requires a lot of work period due to the fact that the work is manually performed by a large number of workmen in the field. In particular, due to the social conditions in which the supply of skilled steelworkers becomes increasingly difficult, Problems related to field work such as productivity decrease due to input, quality, safety management problem, cost increase due to labor cost increase are increasing.

In addition, there is another method related to the processing and assembling of reinforcing bars. In the factory, only a series of operations for performing a predetermined reinforcing process, that is, cutting or bending the reinforcing bars according to the drawings, are carried out. However, since most of the rebar assembly processes except for the rebar are performed in the field, relatively large number of workers and time-consuming repetition of the rebar assembly operation are required to reduce the cost, shorten the construction period, And improvement of safety management are not expected to be expected.

In addition, in the case of the reinforcing bar assembly assembled by the reinforcing bar assembling apparatus according to the prior art shown in FIG. 3, it is difficult to apply the reinforcing bar assembly to the reinforcing bar assembly for manufacturing the PSC beam. That is, it is not easy to transport to the site because the reinforcing bar assembly assembled by the reinforcing bar assembly according to the prior art is a completed reinforcing bar assembly. In particular, in the case of a reinforcing bar assembly for a large structure such as a PSC beam, There is a problem that it is very difficult to move to the site.

Korean Patent No. 10-1692356 filed on July 22, 2016, entitled " Reinforcement Assembly Using End Lift, Method of Making Reinforcement Assembly Using It, and Reinforced Concrete Beam " Korean Patent No. 10-1722084 filed on May 10, 2016, entitled " Method of Making a Solid Lattice Reinforcement Assembly " Korean Registered Patent No. 10-1565598 filed on May 30, 2014, entitled " Reinforced Conveying Bracket for Construction of Reinforced Concrete Structures and Method of Reinforcing Reinforcement Using the Same " Korean Patent No. 10-1305913 filed on June 27, 2011, entitled " Reinforcing mesh assembly for precast box girder " Korean Patent No. 10-595376 filed on April 16, 1999, entitled " Jig Assembly for Manufacturing Reinforcement Assembly, Method for Manufacturing Reinforcement Assembly Using Jig Assembly, Construction method " Korean Patent No. 10-257928 filed on April 8, 1998, entitled " Method of Making Reinforcement Assembly " Korean Patent Publication No. 2008-20727 (Publication Date: March 6, 2008), title of the invention: "

In order to solve the above problems, the present invention provides a method of manufacturing a PSC beam for a PSC bridge, The present invention provides a method of manufacturing a PSC beam, in which a reinforcing bar assembly is formed by combining a reinforcing bar assembly segment in the field, and then a concrete is installed to form a PSC beam.

Another object of the present invention is to provide a method and system for assembling reinforcing assembly segments by assembling a reinforcing assembly segment using a reinforcing assembly assembly coupled with a fastening block or a rebar pedestal, To thereby form a reinforcing steel assembly.

As a means for achieving the abovementioned technical object, a PSC beam manufacturing method for connecting a reinforcing assembly segment by connecting the reinforcing assembly segments in the field according to the present invention comprises the steps of: a) assembling a reinforcing bar assembly and a reinforcing bar support ; ≪ / RTI > b) fastening the fastening block or the reinforcing bar to the reinforcing bar assembly; c) inserting and assembling the bar assembly segment on the fastening block or bar support; d) transporting said rebar assembly segment to the field using a rebar assembly segment transport device; e) placing the reinforcing assembly segment on a site PSC beam building stand and connecting the reinforcing assembly segments to form a reinforcing assembly; f) assembling a mold on the PSC beam production site and casting concrete; And g) installing a taut fixer and completing the PSC beam by introducing a tension force, wherein a plurality of prefabricated rebar assembly segments are brought into the field and folded on the PSC beam production site in situ Wherein the rebar assembly segment conveying device in the step d) is a bottom supporting type lifting device for lifting a steel bar assembly using a steel bar assembly carrying frame for supporting and transporting the steel bar assembly segment from the bottom, , The reinforcing bar assembly carrying frame utilizes a bracing between the reinforcing bar supports located inside the reinforcing bar assembly so that the reinforcing bar assembly and segments are supported on the upper surface of the bracing in a lower supporting manner, So that they are assembled in the form of a rectangular box.

In this case, the fastening block in step b) is a slot-type first fastening block, and the " C " fastening block convex part is formed and inserted into the first reinforcing bar assembly fastening groove formed in the first reinforcing bar assembly, The first reinforcing assembly can move like a rail.

In this case, it is preferable that the fastening block in step b) is a slot-type second fastening block, and the second fastening block convex part is formed at a lower width of the lower end of the second fastening block, To secure a sense of unity at the time of tightening with the second fastening block and the second reinforcing bar assembly, and when the reinforcing bars are separated from the second reinforcing bar assembly after the rebar assembly, the lower end of the second fastening block and the second reinforcing bar assembly So that the second fastening block can be prevented from departing from the second reinforcing bar assembly.

Here, the reinforcing bar in step b) is a first reinforcing bar having a first reinforcing bar convex portion formed therein, the gap being adjusted using a gap adjusting member, and the first reinforcing bar convex portion of the " The first reinforcing bar support and the first reinforcing bar assembly can be moved like a rail by inserting the first reinforcing bar assembly into the first reinforcing bar assembly fastening groove formed in the reinforcing bar assembly.

Here, the reinforcing bar in step b) may be a second reinforcing bar having a convex portion of the lower expandable second reinforcing bar, adjusting the gap using a gap adjusting member, and pressing the convex portion of the lower expanding second reinforcing bar to the second reinforcing bars The second reinforcing bar assembly is inserted into the formed second reinforcing bar assembly engaging groove to secure a sense of unity when the second reinforcing bar assembly is fastened to the second reinforcing bar assembly. When the reinforcing bars are separated from the second reinforcing bar assembly after assembling the reinforcing bars, The second reinforcing bar assembly is engaged with the lower reinforcing bar assembly and serves as a stopper to prevent the second reinforcing bar assembly from being separated from the second reinforcing bar assembly.

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Preferably, the PSC beam manufacturing stage of the step e) is configured as a straight holder so as to minimize a connection error of the reinforcing bar assembly segment.

Here, the PSC beam production stand of step e) may be a guide frame type PSC beam production stand capable of linearly fastening the steel reinforcing assembly segments or an L-type guide type PSC beam production stand for fixing the L- Beam fabrication unit.

According to the present invention, a plurality of rebar assembly segments can be manufactured and transported using a rebar assembly stand at a place such as a factory apart from the site when manufacturing a PSC beam for constructing a PSC bridge, and the rebar assembly segment The PSC beam can be easily manufactured by pouring concrete and introducing a tension force after forming the combined reinforcing bar assembly.

According to the present invention, it is possible to quickly and precisely assemble and fabricate the rebar assembly segments in the factory by assembling the rebar assembly segments using the rebar assembly blocks that are coupled to the fastening blocks or the rebar pedestals, have.

According to the present invention, it is possible to manufacture a PSC beam that is economical as well as high in quality as well as shortening of air by drastically reducing worker input and work time in the field.

1 (a) is a side view showing a general PSC beam bridge, and Fig. 1 (b) is a perspective view showing a PSC beam.
FIG. 2 is a view illustrating a reinforcing steel assembly that is placed inside a reinforced concrete beam according to a conventional technique.
3 is a perspective view showing a reinforcing bar assembling apparatus according to a conventional technique.
Figure 4 is a view of a PSC beam fabricated to form a rebar assembly by connecting the rebar assembly segments in situ in accordance with an embodiment of the present invention.
5 is an operational flow diagram of a method of fabricating a PSC beam to form a rebar assembly by connecting a rebar assembly segment at a site in accordance with an embodiment of the present invention.
FIG. 6 is a view illustrating a reinforcing bar assembly for a movable reinforcing bar assembly applied to a method of manufacturing a PSC beam, in which a reinforcing bar assembly is formed by connecting reinforcing assembly segments at a site according to an embodiment of the present invention.
FIG. 7 is a view showing a slot-type fastening block which is fastened to a reinforcing bar assembly applied to a method of manufacturing a PSC beam to form a steel frame assembly by connecting the steel frame assembly segments in the field according to an embodiment of the present invention.
FIG. 8 is a view illustrating a lower-end expandable fastening block engaged with a reinforcing bar assembly applied to a method of manufacturing a PSC beam to form a reinforcing bar assembly by connecting the reinforcing bar assembly segments in the field according to an embodiment of the present invention.
FIG. 9 is a view showing a slot-type reinforcing bar supported by a reinforcing bar assembly applied to a method of manufacturing a PSC beam to form a reinforcing bar assembly by connecting the reinforcing bar assembly segments in the field according to an embodiment of the present invention.
FIG. 10 is a view illustrating a lower-end extended reinforcing bar coupled to a reinforcing bar assembly applied to a method of manufacturing a PSC beam to form a reinforcing bar assembly by connecting the reinforcing bar assembly segments in the field according to an embodiment of the present invention.
FIG. 11 is a view showing a device for lifting a reinforcing bar assembly in an upper suspension method in a method of manufacturing a PSC beam, in which a reinforcing bar assembly is formed by connecting reinforcing assembly segments at a site according to an embodiment of the present invention.
FIG. 12 is a view showing a combined transportation frame of a lower support type in a method of manufacturing a PSC beam in which a reinforcing bar assembly is formed by connecting reinforcing assembly segments at a site according to an embodiment of the present invention.
FIG. 13 is a view illustrating a process of transporting a steel bar assembly segment in a PSC beam manufacturing method of forming a steel bar assembly by connecting the steel bar assembly segments in the field according to an embodiment of the present invention.
FIG. 14 is a cross-sectional view illustrating the mounting of a reinforcing bar assembly segment on a guide frame type PSC beam producing stand in a method of manufacturing a reinforcing bar assembly by connecting the reinforcing bar assembly segments in the field according to an embodiment of the present invention.
FIG. 15 is a view illustrating a method of linearly connecting a reinforcing bar assembly segment to a guide frame type PSC beam producing stand in a method of manufacturing a reinforcing bar assembly by connecting reinforcing bar assembly segments in the field according to an embodiment of the present invention.
FIG. 16 is a view showing a step of mounting a reinforcing bar assembly segment on a PSC beam producing stand of an L-shaped guide type in a method of manufacturing a PSC beam by connecting a reinforcing bar assembly segment at a site according to an embodiment of the present invention.
17 is a diagram specifically showing a PSC beam production stand of the L-type guide system shown in Fig. 16. Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as " comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

[PSC beam 100 fabricated using a rebar assembly segment]

Figure 4 is a view of a PSC beam fabricated to form a rebar assembly by connecting the rebar assembly segments in situ in accordance with an embodiment of the present invention.

As shown in Figure 4a), the steel frame assembly segments 110a, 110b, and 110c are manufactured and transported at the factory, and then, as shown in Figure 4b), the rebar assembly segments 110a and 110b And 110c are connected to each other to form a reinforcing bar assembly 110. Thereafter, as shown in FIG. 4C, the concrete is poured in the site, It completes.

In the case of a PSC beam 100 manufactured by connecting the reinforcing assembly segments at the site according to the embodiment of the present invention, the PSC beam assembly segments 110a, 110b, The PSC beam 100 can be manufactured by molding, concrete pouring, and tensional force introduction. The PSC beams 100a, 110b, and 110c can be assembled by assembling the reinforced assembly segments 110a, 110b, have.

5 to 17, a method of manufacturing a PSC beam for forming a reinforcing bar assembly by connecting reinforcing assembly segments at a site according to an embodiment of the present invention will be described in detail.

[Method of making PSC beam forming reinforcing assembly by connecting reinforcing assembly segments in the field]

5 is an operational flow diagram of a method of fabricating a PSC beam to form a rebar assembly by connecting a rebar assembly segment at a site in accordance with an embodiment of the present invention.

Referring to FIG. 5, a PSC beam manufacturing method for connecting a rebar assembly segment at a site according to an exemplary embodiment of the present invention to form a rebar assembly includes firstly assembling the rebar assembly segments 110a, 110b, The assembly stand 210 and the reinforcing bar support 220 are disposed (S110).

Next, the tightening block 230 or the reinforcing bar 240 is fastened to the reinforcing bar assembly 210 (S120).

Next, the reinforcing bar assembly segments 110a, 110b, and 110c are inserted and assembled on the coupling block 230 or the reinforcing bar 240 (S130). Accordingly, the reinforcing bar assembly segments 110a, 110b, and 110c of a predetermined standard can be assembled quickly and precisely in the factory by using the reinforcing bar assembly assembly 210. [

Next, the steel bar assembly segments 110a, 110b, and 110c are transported to the site using a steel bar assembly segment transport apparatus (S140). At this time, the steel bar assembly segment conveying device can safely transport the assembled steel bar assembly segments 110a, 110b, and 110c to the site.

Next, the reinforcing bar assembly segments 110a, 110b, and 110c are placed on the field PSC beam production stand 290, and the reinforcing bar assembly segments 110a, 110b, and 110c are connected to each other to form the reinforcing bar assembly 110 (S150). That is, a plurality of prefabricated reinforcing assembly segments 110a, 110b, and 110c are brought into the field and folded together on the PSC beam production stand 290 to form a reinforcing assembly 110 having a desired extension length can do.

Next, the mold is assembled on the PSC beam manufacturing stand 290 and concrete is poured (S160).

Next, a tensional material fixing device is installed, and a PSC beam 100 for a PSC beam bridge is introduced by introducing a tension force (S170).

Therefore, PSC beam 100 for PSC bridge can be manufactured by assembling PSC beam 100 by connecting reinforcing assembly segments at the site according to the embodiment of the present invention. 110b and 110c are produced at a location such as a factory or the like away from the site and are transported to the site to connect the steel assembly segments 110a, 110b and 110c to the steel assembly 110, The PSC beam 100 can be easily manufactured.

6 is a view showing a reinforcing bar assembly for a movable reinforcing bar assembly applied to a method of manufacturing a PSC beam in which a reinforcing bar assembly is formed by connecting reinforcing assembly segments at a site according to an embodiment of the present invention. 6 is a perspective view showing a reinforcing bar assembly for movable rebar assembly, and FIG. 6B is a view specifically showing area A shown in FIG. 6A.

6 (a) and 6 (b), a mobile steel reinforcing assembly assembly 210 for use in a PSC beam manufacturing method for connecting a steel reinforcing assembly segment at a site according to an embodiment of the present invention to form a reinforcing steel assembly Are arranged on both sides, a reinforcing bar support 220 is disposed therebetween, and then a reinforcing bar is inserted and fastened to the upper portion to form a reinforcing bar assembly segment 110a.

6 (b)), a fastening block or a reinforcing bar is inserted into the reinforcing bar assembly 210 disposed on both sides, and a reinforcing bar is inserted into the fastening block or the groove formed at predetermined intervals in the reinforcing bar . At this time, the reinforcing bar supports 220 may be disposed at predetermined intervals to support the reinforcing bars.

7 is a view showing a slot type fastening block to be fastened to a reinforcing bar assembly applied to a method of manufacturing a PSC beam to form a steel frame assembly by connecting the steel frame assembly segments in the field according to the embodiment of the present invention. FIG. 5 is a view illustrating a lower end extended type fastening block which is fastened to a reinforcing bar assembly applied to a PSC beam manufacturing method for forming a reinforcing steel assembly by connecting the reinforcing assembly segments at the site according to an embodiment of the present invention.

Referring to FIGS. 7 and 8, a block-type reinforcing bar assembly device is provided in which first and second fastening blocks 230a and 230b having a length of about 1.0 to 2.0 m are provided with reinforcing bars (S = 200 to 400 mm) The first and second reinforcing assembly coupling grooves 211a and 211b are formed and the predetermined number of the first and second coupling blocks 230a and 230b are fastened to the length of the reinforcing assembly assemblies 210a and 210b , A block fastening type rebar assembly device is completed,

At this time, since the spacing of the reinforcing bars can be set within the first and second tightening blocks 230a and 230b, a separate reinforcing gap adjusting device is not required, and one to three fastening blocks 230a, 230b may be used.

7 shows a state in which the "U" shaped fastening block convex portion 231a is formed in the first fastening block 230a and the first fastening block 230a is inserted into the first reinforcing assembly fastening groove 211a, And the first reinforcing bar 210a can move like a rail.

7A shows insertion of a slot-like fastening block as a first fastening block 230a into the first reinforcing assembly fastening groove 211a formed in the first reinforcing assembly 210a, and FIG. 7B shows a state in which the first fastening block 230a is inserted into the first reinforcing assembly 210a, and FIG. 7C shows the slot fastening block as the first fastening block 230a, 7 (d) specifically shows the region B shown in Fig. 7 (b).

8 shows a state in which the second fastening block convex portion 231b is formed in the second fastening block 230b and the lower end of the second fastening block 230b is inserted into the second reinforcing assembly fastening groove 211b, It is possible to secure a sense of unity when fastened to the second fastening block 230b and the second reinforcing bar assembly 210b. In this case, when the reinforcing bar is separated from the second reinforcing bar assembly 210b after the reinforcing bars are assembled, the lower end of the second connecting block 230b and the second reinforcing bar assembly 210b are engaged with each other, It is possible to prevent the second fastening block 230b from being separated from the second fastening block 210b.

Specifically, FIG. 8A shows insertion of a slot-shaped fastening block as a second fastening block 230b into a second reinforcing bar fastening groove 211b formed in the second reinforcing bar assembly 210b, 8B shows a state in which the second fastening block 230b is inserted into the second reinforcing bar 210b, and FIG. 8C shows the slot type fastening block as the second fastening block 230b, 8 (d) specifically shows the C region shown in Fig. 8 (b).

9 is a view showing a slot-type reinforcing bar supported by a reinforcing bar assembly applied to a method of manufacturing a PSC beam to form a reinforcing bar assembly by connecting the reinforcing bar assembly segments in the field according to an embodiment of the present invention. FIG. 5 is a view illustrating a lower-side expandable reinforcing bar attached to a reinforcing bar assembly applied to a method of manufacturing a PSC beam to form a reinforcing bar assembly by connecting the reinforcing bar assembly segments in the field according to an embodiment of the present invention.

Referring to FIGS. 9 and 10, it is possible to fix the gap by connecting a separate gap adjusting member 250 to each of the reinforcing bars 240a and 240b. In this case, One to three gap adjusting members 250 may be used.

9 shows a state where the first reinforcing bar support 240a and the second reinforcing bar support 240b are inserted into the first reinforcing bar assembly coupling groove 211a by forming the first reinforcing bar support convex portion 241a on the first reinforcing bar support 240a, 1 reinforcing assembly 210a can move like a rail.

Specifically, FIG. 9A shows a first reinforcing bar assembly 210a having a first reinforcing assembly coupling groove 211a formed therein and a first reinforcing bar assembly 210a having a first reinforcing bar protrusion 241a formed therein. 9 (b) shows a state in which the first reinforcing bar 240a is inserted into the first reinforcing bar 210a, and FIG. 9 (c) (D) in FIG. 9 specifically shows the area E shown in FIG. 9 (b), in which the first reinforcing bar 240a is spaced by the gap adjusting member 250 .

10, the width of the lower end of the second reinforcing bar 240b may be widened to secure a sense of unity when fastened to the second reinforcing bar assembly 210b. In this case, when the reinforcing bars are separated from the second reinforcing bar assembly 210b after the reinforcing bars are assembled, the lower end of the second reinforcing bar 240b and the second reinforcing bar assembly 210b are engaged with each other, It is possible to prevent the second reinforcing bar 240b from being separated from the second bar 210b.

10A illustrates a second reinforcing bar assembly 240b having a second reinforcing bar assembly concave groove 211b formed therein and a second reinforcing bar support convex portion 241b formed at a lower end thereof, 10B shows a state in which the second reinforcing bar 240b is inserted into the second reinforcing bar assembly 210b, and FIG. 10C shows a state in which F FIG. 10D specifically shows the G region shown in FIG. 10B), and the second reinforcing bar 240b is spaced by the gap regulating member 250. FIG.

Meanwhile, in the PSC beam manufacturing method of forming the reinforcing bar assembly by connecting the reinforcing bar assembly segments in the field according to the embodiment of the present invention, the reinforcing bar assembly segment conveying device includes the reinforcing bar assembly segments 110a, 110b, It can safely be transported to a transport vehicle and can be taken to the PSC beam production site in the field.

11 is a view showing an apparatus for lifting a reinforcing bar assembly in an upper suspension manner in a method of manufacturing a PSC beam by connecting reinforcing assembly segments at a site according to an embodiment of the present invention, 11 (b) shows the H region shown in FIG. 11 (a) in detail, and FIG. 11 (c) shows a structure for lifting the rebounding assembly lifting device 260 for lifting the segments 110a, 110b, And the lifting ring 263 inserted into the device 261. [

As shown in FIG. 11, the upper suspension type steel lifting device 260 is a device for hanging up the steel frame assembly segments 110a, 110b, and 110c, and includes a shake prevention device 261, a bracing 262 A lifting ring 263, and a lifting rope 264. [0033]

A plurality of lifting hooks 263 are inserted and moved to the anti-shake device 261 formed of a steel bar on one side of which a part of the side is not closed, , The steel assembly segments 110a, 110b, 110c can be lifted.

12 is a view showing a combined transportation frame of a lower supporting type in a method of manufacturing a PSC beam in which a reinforcing bar assembly is formed by connecting reinforcing assembly segments at a site according to an embodiment of the present invention. The assembly segments 110a, 110b and 110c are shown coupled to the reinforcing bar assembly 210 and the reinforcing bar support 220. Figure 12b shows the reinforcing bar assembly carrying frame 270, Shows that the lifting device 260 is used to lift the steel frame assembly carrying frame 270 on which the steel frame assembly segments 110a, 110b and 110c are seated.

As shown in FIG. 12, the lower supporting type lifting device for lifting a reinforcing bar assembly includes a reinforcing frame assembly supporting frame 270 for supporting and transporting the reinforcing frame assembly segments 110a, 110b, and 110c from below, It is possible to utilize the reinforcing bar support 220 disposed inside. That is, after the rebar assembly segments 110a, 110b, and 110c are fabricated, the reinforcing bar supports 220 may be assembled together and lifted to the reinforcing bar assembly carrying frame 270. [ That is, a bracing 271 between the reinforcing bar supports 220 disposed inside the reinforcing bar assembly 210 is utilized, and the reinforcing bar assembly segments 110a, 110b, and 110c are formed on the reinforcing bars 220 and the upper surface of the bracing 271, 110b, and 110c are assembled in the form of a rectangular box body such that the reinforcing bar assembly segments 110a, 110b, and 110c are positioned inside and closed together while the reinforcing frame assembly 110 is supported in a lower supporting manner.

FIG. 13 is a view illustrating a process of transporting a steel bar assembly segment in a method of manufacturing a PSC beam to form a steel bar assembly by connecting the steel bar assembly segments in the field according to an embodiment of the present invention.

Figure 13a shows that the steel frame assembly segments 110a, 110b and 110c are fabricated at the factory and then hoisted by the steel frame assembly transport frame 270 to be transported to the transport vehicle 280, 13C shows moving the reinforcing assembly segments 110a, 110b and 110c to the site using the transport vehicle 280. Fig. Quot; off " position of the rebar assembly segments 110a, 110b, and 110c.

Meanwhile, when the reinforcing bar assembly 110 is formed by connecting the reinforcing assembly segments 110a, 110b, and 110c at the site, the PSC beam manufacturing stand 290 is installed to minimize the connection errors of the reinforcing bar assembly segments 110a, 110b, As a straight holder.

14 is a cross-sectional view showing that a reinforcing bar assembly segment is mounted on a guide frame type PSC beam producing stand in a method of manufacturing a reinforcing bar assembly by connecting the reinforcing bar assembly segments in the field according to the embodiment of the present invention, Is a view showing that the reinforcing assembly segment is linearly coupled to the guide frame type PSC beam producing stand.

As shown in Figs. 14 and 15, the PSC beam producing stand 290a of the guide frame type includes a longitudinal frame member 291, a transverse web member 292, a lower plate steel plate 293 and a guide frame 294, And a plurality of reinforcing assembly segments 110a, 110b, and 110c may be linearly fastened.

Meanwhile, FIG. 16 is a view illustrating a method of manufacturing a PSC beam by connecting a reinforcing bar assembly segment at a site according to an embodiment of the present invention, and mounting a reinforcing bar assembly segment on a PSC beam building plate of an L-type guide system And FIG. 17 is a diagram specifically showing a PSC beam production zone of the L-type guide system shown in FIG.

Fig. 16 (a) shows a transverse directional beam member mounted on a vertical directional beam member, and Fig. 16 (b) shows the provision of a lower formwork steel plate and an L-shaped guide on a transverse directional beam member. 17A is a detailed view of the I region shown in FIG. 16, and FIG. 17B is a side view.

16 and 17, the PSC beam producing stand 290b of the L-type guide system includes a longitudinal plate member 291, a transverse direction sheet member 292, a lower plate steel plate 293, an L-shaped guide The L-shaped guide 295 is coupled to the guide pin 296 by a guide pin 296. The L-shaped guide 295 may include a guide pin 296 and a guide pin 296, .

That is, the PSC beam production stand 290b of the L-shaped guide system can linearly align the steel frame assembly segments 110a, 110b and 110c using the L-shaped guide 295 and the guide fixing pin 296, It is possible to secure the coating thickness in the formation.

As a result, according to the embodiment of the present invention, it is possible to manufacture a plurality of reinforcing bar assembly segments by using the reinforcing bar assembly at a place such as a factory apart from the field, and to easily carry the PSC beam for the construction of the PSC bridge, The PSC beam can be easily manufactured by pouring concrete and introducing a tensile force after forming the reinforcing steel assembly in which the reinforcing assembly segments are combined.

Also, according to the embodiment of the present invention, it is possible to assemble the rebar assembly segments by using the reinforcing bars assembled with the fastening blocks or the rebar pedestals, so that the rebar assembly segments can be assembled quickly and precisely in the factory, Can be easily connected. Accordingly, it is possible to manufacture a PSC beam which is economical as well as high in quality as well as shortening of air by drastically reducing worker input and work time in the field.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: PSC beam
110: Reinforcing assembly
110a, 110b, 110c: Reinforcing assembly segment
210:
210a: first reinforcing bar assembly
211a: First reinforcing assembly assembly fastening groove
210b: second reinforcing bar assembly
211b: second reinforcing bar assembly fastening groove
220: Reinforcement support
230: fastening block (slot-type fastening block)
230a: first fastening block
231a: first fastening block convex portion
230b: second fastening block
231b: second fastening block convex portion
240a: first reinforcing bar
241a: first reinforcing bar convex portion
240b: second reinforcing bar
241b: second reinforcing bar convex portion
250:
260: Reinforcement assembly lifting device
261:
262: Bracing
263: Lifting ring
264: Lifting rope
270: Reinforcing assembly transport frame
280: Transport vehicle
290: PSC beam production stand
290a: first PSC beam production stand
290b: second PSC beam production stand
291: Longitudinal groove
292:
293: Iron plate for lower formwork
294: Guide frame
295: L type guide
296: Guide pin

Claims (10)

a) disposing a reinforcing bar 210 and a reinforcing bar 220 for fabrication of the reinforcing assembly segments 110a, 110b and 110c at the plant;
b) fastening the fastening block 230 or the reinforcing bar 240 to the reinforcing bar assembly 210;
c) inserting and assembling the reinforcing bar assembly segments (110a, 110b, 110c) on the coupling block (230) or the reinforcing bar support (240);
d) transporting said rebar assembly segments (110a, 110b, 110c) to the field using a rebar assembly segment transport device;
e) forming the reinforcing bar assembly 110 by mounting the reinforcing assembly segments 110a, 110b and 110c on the field PSC beam building block 290 and connecting the reinforcing assembly segments 110a, 110b and 110c, ;
f) assembling a mold on the PSC beam manufacturing stand (290) and casting concrete; And
g) installing a tensioning fixture and introducing a tension force to complete the PSC beam 100,
A plurality of prefabricated rebar assembly segments 110a, 110b, 110c are brought into the field and folded together on the PSC beam production stand 290 in situ to form a reinforcing assembly 110 having a desired extension length,
The rebar assembly segment transport device 270 in the step d) is a lower lifting type rebar assembly lifting device. The rebar assembly lifter uses a reinforcing bar assembly carrying frame for supporting and transporting the rebar assembly segments 110a, 110b, and 110c from the bottom, The reinforcing bar assembly carrying frame 270 utilizes a bracing 271 between the reinforcing bar supports 220 disposed inside the reinforcing bar assembly 210 and includes a reinforcing bar assembly 210, (110a, 110b, 110c) are supported in a lower supporting manner and are assembled in the form of a rectangular box so that the reinforcing assembly segments (110a, 110b, 110c) are positioned inside and closed. To form a reinforcing steel assembly. The method according to claim 1,
The fastening block 230 of the step b) is formed as a slot-type first fastening block 230a, and a " C " fastening block convex portion 231a is formed and the first reinforcing bar assembly And the first fastening block 230a and the first reinforcing rod assembly 210a are moved like a rail by inserting the first fastening block 230a and the first reinforcing rod assembly 210a into the fastening groove 211a so as to form a PSC beam Way. The method according to claim 1,
The coupling block 230 of the step b) is a slot-type second coupling block 230b and the second coupling block convex portion 231b is formed to have a wide width at the lower end of the second coupling block 230b, Is inserted into the second reinforcing bar assembly coupling groove 211b formed in the assembly base 210b to secure a sense of unity when fastened to the second coupling block 230b and the second reinforcing bar assembly 210b, When separating the reinforcing bar from the two reinforcing bars 210b, the lower end of the second connecting block 230b and the second reinforcing bar assembly 210b are engaged with each other to serve as a stopper, 2 fastening block 230b is prevented from being separated from the reinforcing bar assembly 230b. The method according to claim 1,
The reinforcing bar 240 of the step b) is a first reinforcing bar 240a having a 'C' shaped first reinforcing bar convexity 241a formed therein, and the gap is adjusted using the gap adjusting member 250, Shaped first reinforcing bar convex portion 241a is inserted into the first reinforcing bar assembly coupling groove 211a formed in the first reinforcing bar assembly 210a so that the first reinforcing bar support 240a and the first reinforcing bar assembly 240a ' (210a) is moved like a rail. ≪ RTI ID = 0.0 > 31. < / RTI > The method according to claim 1,
The reinforcing bar 240 of the step b) is a second reinforcing bar 240b having a second reinforcing bar protruding portion 241b formed on the lower end of the reinforcing bar 240 and the interval adjusting member 250 is used to adjust the interval, The second reinforcing bar support protrusion 240b is inserted into the second reinforcing bar assembly 210b by inserting the two reinforcing bar protrusion 241b into the second reinforcing bar assembly coupling groove 211b formed in the second reinforcing bar assembly 210b. The lower end of the second reinforcing bar support 240b and the second reinforcing bar assembly 210b are engaged with each other to serve as a stopper when the reinforcing bars are assembled and the reinforcing bars are separated from the second reinforcing bar assembly 210b. And preventing the second reinforcing bar assembly (240b) from being separated from the second reinforcing bar assembly (210b) by connecting the reinforcing bar assembly segments in situ to form a reinforcing bar assembly. delete delete The method according to claim 1,
The PSC beam production stand 290 of step e) is configured as a straight stand so as to minimize a connection error between the reinforcing assembly segments 110a, 110b and 110c. Forming a PSC beam. 9. The method of claim 8,
The PSC beam manufacturing stand 290 of the step e) may be a PSC beam manufacturing stand 290a of a guide frame 294 type that can linearly fasten the reinforcing bar assembly segments 110a, 110b and 110c, Shaped PSC beam manufacturing stand (290b) for fixing the L-shaped guide (295) by using a plurality of reinforcing bars (296). A PSC beam produced by a PSC beam fabrication method for forming a steel bar assembly by connecting bars of a rebar assembly at the site of any one of claims 1, 2, 5, 8 to 9.

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