KR102568976B1 - Protection Wall Structure for Full PC Slab - Google Patents

Abstract

The present invention relates to a protective wall structure for a front end PC slab.
To this end, the protective wall structure for the front-end PC slab of the present invention is installed along the PC slab disposed in the longitudinal direction, and on one side of the PC slab, a reinforcing bar is provided to be exposed upward, so that a plurality of PC protective walls are continuously coupled. , The PC protective wall is provided with inclined grooves on both sides of the front side, and through holes are formed in each inclined groove to be exposed toward the adjacent side surface, so that the fastening steel rod sequentially penetrates through a pair of through holes of the adjacent PC protective wall and is bound. characterized by
As a result, while transporting and assembling to the site is easy, fastening steel rods sequentially penetrate and bind through holes of adjacent PC protective walls, thereby forming a solid coupling structure with adjacent PC protective walls.

Description

Protection wall structure for full PC slab {Protection Wall Structure for Full PC Slab}

The present invention relates to a protection wall structure for a front end PC slab, and more particularly, a plurality of PC protection walls are continuously coupled to reinforcing bars exposed to the top of the front end PC slab, and inclined grooves provided on both sides of the front surface of the PC protection wall. Through-holes are formed so as to be exposed toward the adjacent side, and the fastening steel rod sequentially penetrates and binds through the through-holes of the adjacent PC protection wall, so that assembly is easy, workability is excellent, and the protection wall for the front-end PC slab secures structural integrity. It's about the structure.

At road construction sites or highways, barriers are installed to prevent vehicles from entering a reverse route or leaving the road. In the case of temporary use such as construction sites, plastic barriers are widely used because they are easy to transport, easy to assemble, and fill with water at the site. However, most of the semi-permanent barriers are made in the form of concrete walls. there is.

These concrete protective walls can be classified into field-manufactured protective walls and PC-type protective walls according to the manufacturing method. Field-manufactured barriers have the advantage of being able to omit the process of connecting individual blocks and promoting integrity with the road surface, as they are manufactured and constructed on-site by assembling formwork. There were disadvantageous limitations due to the characteristics of roads that were delayed and required early opening.

Accordingly, in recent years, pre-manufactured PC-type protective walls using a precast method, which are excellent in terms of price, maintenance, and transportability, have been widely constructed. The PC-type protective wall can be installed in a short time by bonding with adjacent protective walls using wires, reinforcing bars, etc., or by inserting a steel pipe into an eyebolt and then filling it with mortar to promote integrity.

On the other hand, due to the lack of integrity with the road surface or adjacent barriers, the vehicle is easily overturned or separated in the event of a collision, and it is pointed out that the driving recovery function for the vehicle is limited. Above all, when a PC-type barrier is installed at the end of a bridge, there is a problem of not preventing a vehicle from falling, and cases of overturning even in the wind of a typhoon frequently occur, so there is a limit that is not suitable for a permanent place.

In order to solve this problem, recently, a slab is formed by arranging a full-face PC deck on a girder of a bridge, and structural integrity with a PC-type protective wall is promoted by using reinforcing bars exposed to the front-end slab. Korean Patent Registration No. 10-1954155 (registered on February 26, 2019, hereinafter referred to as 'Prior Art Document 1') has been proposed.

As shown in FIG. 1A, the prior art document 1 exposes the reinforcing bars 1a at one end of the full deck 1 and includes the protective wall block 2 on top of the full deck 1. Grooves (2a) are provided on both sides of the block (2), and concrete is poured in a state in which reinforcing bars (1a) are inserted in the space formed by the grooves (2a) between adjacent barrier blocks (2).

In addition, the loop reinforcing bar (3a) and the rotating hook (3b) were pre-embedded in the groove (2a) to bind each other, but it was not easy to realistically implement assembly in a state where the heavy barrier block (2) was placed. Depending on the reinforcing bars, the binding force was also weak, and above all, securing structural integrity was limited as all couplings were concentrated in the groove portion 2a.

In addition, Korean Patent Registration No. 10-2453839 (registered on October 6, 2022, hereinafter referred to as 'Prior Art Document 2') has been proposed. As shown in FIG. 1B, the prior art document 2 exposes the steel plate 4 to the grooves 2a formed on both sides of the protective wall block 2, as in the conventional PC-type protective wall, and communicates with the steel plate 4. Integrity was achieved by allowing the steel rods 5 to pass through the holes sequentially.

However, in the prior art document 2, the protective wall block 2 is placed on the reinforcing bars exposed to the bridge deck 1, and at the same time, the steel bars 5 are precisely arranged to be inserted into the communication holes formed in the plurality of steel plates 4. There was a construction difficulty that had to be done, and, as in Prior Art Document 1, the binding of the adjacent barrier block 2 had a limit made exclusively in the groove portion 2a.

Republic of Korea Patent Registration No. 10-1954155 (2019. 02. 26. Registration) Republic of Korea Patent Registration No. 10-2453839 (2022. 10. 06. registration)

The present invention has been devised to solve the above problems, and it is easy to transport and assemble to the site using a PC slab and a PC protective wall, and thus has excellent workability. Its purpose is to provide a barrier structure for a front PC slab that can be solidly integrated and is structurally stable.

In order to solve the above problems, the protection wall structure (PW) for the front end PC slab according to an embodiment of the present invention is installed along the PC slab 10 disposed in the longitudinal direction. It relates to a protection wall structure (PW), On one side of the PC slab 10, a reinforcing bar 11 is provided to be exposed upward, so that a plurality of PC protection walls 100 are continuously coupled, and the PC protection wall 100 has inclined grooves on both sides of the front surface 101. 110 is provided, and through holes 120 are formed in each inclined groove portion 110 so as to be exposed toward the adjacent side surface 102, so that the fastening steel bar 200 is adjacent to a pair of through holes of the PC protective wall 100 ( 120) are sequentially penetrated and bound, and the reinforcing bar 11 is provided to penetrate the foot portion 130 provided at the bottom of the PC protection wall 100, and the PC protection wall 100 includes the reinforcing bar 11 and A filling space 140 is provided at a corresponding position to fill with non-shrinkage mortar, and a work hole 150 is exposed on the front surface 101 to communicate with the filling space 140, and on both side surfaces 102, respectively. A locking protrusion 170 and a locking groove 180 are formed in the vertical direction to interlock with the adjacent PC protection wall 100, and a retroreflective cover 160 is coupled to the front of the work hole 150, and the retroreflective The cover 160 is provided with a reflective panel 161 to cover the working hole 150, and a fitting sleeve 162 is formed at the rear of the reflective panel 161 to correspond to the size of the working hole 150, Since it is fitted into the work hole 150, it is characterized in that it forms the finished surface of the mortar that is filled with the work hole 150 and shrinks during curing.

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In addition, the PC protection wall 100 has a blockout 160 provided at the corner where the side surface 102 and the front surface 101 or rear surface 103 intersect, and each blockout 160 has a connector so that one side is exposed ( 300) may be buried and coupled with the connector 300 of the adjacent PC protection wall 100 and the clamp 400.

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In addition, the central axis of the through hole 120 may be formed to have a certain curvature, and the central axis of the fastening steel bar 200 may also be formed to have the same curvature as the through hole 120 .

In addition, reinforcing bar couplers 12 are embedded in the PC slab 10 at regular intervals, and reinforcing bars 11 may be bound to the reinforcing bar couplers 12.

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According to the protection wall structure (PW) for the front-side PC slab of the present invention, by using the PC slab and the PC protection wall manufactured in advance, there is an advantage in that transportation and assembly to the site are easy.

In particular, the PC protection wall is fixed through the medium of the rebar exposed to the upper part of the PC slab, and at the same time, through holes are formed in each PC protection wall so as to be exposed from the inclined groove on the front to the side, and the through-holes of the adjacent PC protection walls are fastened. By penetrating and binding, it is possible to form a strong coupling structure with an adjacent PC protective wall.

In addition, since the non-shrinkage mortar is filled in the filling space while the reinforcing bar is provided to penetrate the foot portion of the PC protective wall, a predetermined bonding force can be achieved even before curing.

Furthermore, according to the embodiment, there is an advantage in that workability is improved by excluding interference by first arranging the PC protective wall and then binding the reinforcing bars using a reinforcing bar coupler previously embedded in the PC slab as a workman.

In addition, a connection hole is embedded in the blockout formed at the corner of the PC protection wall and bound with a clamp to a connection hole of an adjacent protection wall, thereby promoting bonding strength between the lower and rear surfaces of the protection wall having an expanded cross section.

In addition, a multifaceted coupling structure can be formed by interlocking between adjacent PC protection walls through the locking protrusion and the locking groove, and the central axis of the through hole and the fastening steel bar is formed to have a certain curvature, so that workability is promoted and solid integration is possible. Thus, a structurally stable coupling structure can be provided.

Figure 1a is a conceptual diagram showing a PC-type firewall according to Prior Art Document 1.
Figure 1b is a conceptual diagram showing a PC-type firewall according to Prior Art Document 2.
2 and 3 are a perspective view and an exploded perspective view showing a PC slab protection wall structure according to an embodiment of the present invention.
Figure 4 is a perspective view showing a PC firewall according to an embodiment of the present invention.
5 and 6 are a longitudinal cross-sectional view and a cross-sectional view showing a PC slab protection wall structure according to an embodiment of the present invention.
Figure 7 is a cross-sectional view showing a binding structure of the PC protection wall according to the embodiment shown in Figure 3;
8 to 9 are perspective and cross-sectional views showing a binding structure of a PC protection wall according to various embodiments of the present invention.
10 is a perspective view and a longitudinal sectional view showing a binding structure of a PC protection wall according to another embodiment of the present invention.
11 and 12 are perspective views illustrating a PC protective wall and a protective wall structure provided with a retroreflective cover according to various embodiments.

Hereinafter, preferred embodiments of the present invention will be described in detail based on the matters shown in the drawings.

As shown in the perspective view shown in FIG. 2, the protection wall structure (PW) for the front end PC slab of the present invention is PC protection wall 100 along the longitudinal direction of the bridge at one end of the front end PC slab 10 constructed on the upper part of the bridge. is formed by successively installing

However, the present invention is proposed to improve the problems of the conventional PC-type protective wall, and it is possible to prevent vehicle separation or the overturning of the protective wall during a collision while promoting transportability and workability using the PC protective wall 100, and in particular, the PC protective wall Based on the stable coupling structure, it is proposed to prevent a vehicle fall accident.

Accordingly, as shown in FIG. 3, on one side of the PC slab 10 disposed in the longitudinal direction, the reinforcing bar 11 is provided to be exposed upward. After the reinforcing bar 11 is inserted and manufactured integrally during the manufacturing process of the PC slab 10, it can be transported to the site and can be manufactured in the form of an upright steel bar, a loop-type reinforcing bar, or an expanded head reinforcing bar.

On the other hand, as shown in FIGS. 4 and 5, a plurality of PC protection walls 100 are continuously disposed on the top of the PC slab 10 along the longitudinal direction. At this time, a filling space 140 is provided under the PC protection wall 100, and the reinforcing bars 11 may be seated in the filling space 140. Non-shrinkage mortar or concrete is filled in the filling space 140 to promote integration of the PC slab 10 and the individual PC protective walls 100. In addition, an elastic rubber pad may be provided on the bottom surface where the PC slab 10 and the PC protection wall 100 come into contact.

In particular, as shown in FIGS. 2 and 6, the protection wall structure (PW) of the present invention has inclined grooves 110 provided on both sides of the front surface 101 of the PC protection wall 100, and each inclined groove part 110 A through hole 120 is formed so as to be exposed toward the adjacent side surface 102, so that the fastening steel bar 200 sequentially penetrates the pair of through holes 120 of the adjacent PC protection wall 100 to the tightening nut 220. There is a major difference in the point of solidarity.

When both ends of the fastening steel bar 200 are exposed to the inclined groove portion 110 after sequentially passing through the through hole 120, a thread 210 is formed at the end of the fastening steel bar 200, and the tightening nut 220 ), whereby simple assembly can be implemented and at the same time a solid coupling structure with the adjacent PC protection wall 100 can be formed.

Meanwhile, the fastening steel bar 200 may be formed to have a predetermined curvature. More specifically, the central axis of the through hole 120 may be formed to have a certain curvature, and the central axis of the fastening steel bar 200 may also be formed to have the same curvature as the through hole 120 . Thus, the fastening steel bar 200 is provided to pass through the center of the side surface 102 of the PC protective wall 100, so that a stable coupling force can be secured, and the fastening steel bar 200 is inserted along the curvature of the through hole 120. Since it can be done, constructability can also be promoted.

In addition, since the inclined surface 111 of the inclined groove 110 and both ends of the fastening rod 200 are in a vertical state, the thread 210 exposed to the end and the fastening nut 220 are mutually bound, so that the fastening nut (220) can be stably fastened to the inclined surface (111). Thereafter, the inclined groove portion 110 may be filled with non-shrinkage mortar.

Meanwhile, as shown in FIG. 5 , the reinforcing bar 11 exposed to the upper portion of the PC slab 10 may be provided to pass through the foot portion 130 provided at the lower end of the PC protection wall 100. More specifically, the foot portion 130 provides an expanded cross section so that the PC protection wall 100 is provided upright in a stable state. However, as described above, since the reinforcing bar 11 is provided in the filling space 140 of the PC protection wall 100, the reinforcing bar 11 penetrates the foot portion 130, so that the insertion guide hole 131 can be formed.

It is preferable that the insertion guide hole 131 formed in the foot portion 130 provides a cross section that is slightly wider than that of the reinforcing bar 11 so that workability is secured. However, depending on the embodiment, a thread 11a is formed on the upper part of the reinforcing bar 11 and fastened with a fastening nut 11b to achieve a predetermined bonding force even before the mortar is filled in the filling space 140 and cured. can do.

In addition, as shown in FIG. 4, the filling space portion 140 may be formed over the entire longitudinal direction of the PC protection wall 100, but partially only at the position where the reinforcing bar 11 is seated in order to promote workability. It is preferable to form In the filling space 140, only an injection hole for mortar filling may be formed in a state in which the front surface 101 is blocked.

However, depending on the embodiment, the work hole 150 may be exposed on the front surface 101 of the PC protection wall 100 to communicate with the filling space 140 . The work hole 150 also serves as an injection hole for filling non-shrinkage mortar, but can additionally function as a work hole for binding the reinforcing bars 11 by a worker.

In one embodiment, when the thread 11a is formed on the upper part of the reinforcing bar 11, it can be used as a work tool for fastening the fastening nut 11b, and after placing the PC protective wall 100 first, the reinforcing bar (11) can also be used as a work tool for assembling the PC slab (10).

At this time, as shown in FIG. 3, the PC slab 10 may be manufactured so that the reinforcing bar coupler 12 is embedded in advance at regular intervals. When the reinforcing bar coupler 12 is integrally formed with threads 12a on the inner and outer circumferential surfaces and disposed at the site, the reinforcing bar coupler 12 is provided at the site through the thread 11d provided at the lower part of the reinforcing bar 11. can be assembled

As the rebar 11 is assembled at the site, there is an advantage in improving workability by eliminating interference between the PC protective wall 100 and the rebar 11. Of course, the reinforcing bar 11 is bound to the reinforcing bar coupler 12 embedded in the PC slab 10 to promote transport efficiency when transporting to the site, and then lift the PC protective wall 100 to remove the PC slab 10 It is also possible to mount on

In addition, as shown in FIG. 11, the PC protective wall 100 of the present invention, according to the embodiment, after filling the mortar with the inclined groove 110 or the work hole 150 formed in the front, retroreflective so that the headlights are reflected The cover 160 may be combined to form a finished surface. Even if non-shrinkage mortar is filled in the mortar filling space such as the inclined groove portion 110 or the work hole 150, some shrinkage is inevitable during curing, so that some steps are inevitably formed with the surface of the PC protective wall 100. In the process, the retroreflective cover 160 may be fitted and coupled.

The retroreflective cover 160 may be formed by applying a fluorescent material for guiding a driving direction or combining a reflector. The retroreflective cover 160 may have a fitting sleeve 162 corresponding to the size of the slanted groove 110 or the work hole 150, and a reflective panel 161 formed on the front surface.

At this time, the retroreflective cover 160 may have one fitting sleeve 162 formed at the rear of one reflective panel 161, but as shown in FIG. 12, one reflective panel 161 is formed in the longitudinal direction. It is provided along, and fitting sleeves 162 may be formed at regular intervals at the rear of the reflective panel 161 . As a result, it is possible to maximize visibility by implementing a linear retroreflective cover continuously formed along the longitudinal direction of the road.

On the other hand, the protective wall structure (PW) of the present invention implements integration between adjacent PC protective walls 100 using fastening steel bars 200, and integrates with the PC slab 10 on the front surface by pouring mortar on the reinforcing bars 11. It is possible to provide a structurally stable structure while promoting constructability by implementing a. However, since the PC protection wall 100 has a shape in which the cross section expands toward the bottom as a whole, the center of gravity is located at the bottom, and thus securing a stable binding force only with the fastening steel bar 200 located at the center in the vertical direction There are limits.

Accordingly, as shown in FIG. 4 , the PC protective wall 100 of the present invention may be coupled with a clamp 400 by having a connection hole 300 provided at the bottom, preferably at the bottom, of the fastening steel bar 200. More specifically, a blockout 160 is provided at the corner where the side surface 102 of the PC firewall 100 and the front surface 101 or rear surface 103 intersect, and one side is exposed at each blockout 160. The connector 300 is buried and may be bound to the connector 300 of the adjacent PC protection wall 100 and the clamp 400 .

As shown in FIG. 7, the connector 300 may be formed on only one side of the front side 101 or the back side 103 of the PC protection wall 100, but is formed on both the front side 101 and the back side 103. It can be. As a result, it is possible to promote bonding force between the lower part and the rear surface of the PC protection wall 100, which has a relatively expanded cross section. In addition, there is an advantage in improving workability as it is possible to bind by simple assembly using the clamp 400 to the connection port 300 exposed on the front 101 or rear 103 of the PC protection wall 100.

Since the connector 300 and the clamp 400 can be formed to have various shapes and coupling structures, based on the matters shown in FIGS. 7 to 10, the adjacent PC protection wall 100 is connected to the connector 300 and the clamp ( 400) will be described in more detail with respect to an embodiment in which mutual binding is performed.

One side of the connector 300 is exposed to the blockout 160 of the PC protection wall 100 to form a connection portion 310, and the other side is buried during the manufacturing process of the PC protection wall 100 to form a buried portion 320. do. At this time, since the connector 300 is embedded with the reinforcing bar 330 coupled to the other side of the embedding part 320, shear reinforcement of the connector 300 can be realized. Depending on the embodiment, a shear reinforcing piece 321 may be formed in the buried portion 320, and the reinforcing bar 330 may be provided with a reinforcing piece 331 perpendicular to the longitudinal direction.

In addition, since the connection part 310 of the connection port 300 is exposed to the upper part through the blockout 160, the efficiency of the binding construction is increased in mutual binding with the clamp 400 after arranging the adjacent PC protection wall 100. can help At this time, the clamp 400 is provided with a connecting portion 410 and can be fastened with a fastening bolt 420 while being directly or indirectly connected to the connecting portion 310 provided in the pair of adjacent connectors 300 . It is preferable that a rubber pad is provided between the connection part 310 and the connection part 410 to buffer against vibration and displacement, and the fastening bolt 420 may be manufactured in the form of a steel bar having a thread.

According to one embodiment, in the connector 300, the connector 310 protrudes to the outside of the buried portion 320, and the clamp 400 is provided with a connector 410 so as to come into contact with the connector 310. Fastening holes 310a and 410a are formed to pass through 310 and the connecting portion 410 so that the fastening bolt 420 can be fastened.

On the other hand, when the binding of the adjacent PC protective walls 100 is completed, it is preferable to fill the blockout 160 with non-shrinkage mortar, and if necessary, it can be removed to perform maintenance.

As shown in FIG. 7, a through hole 310a in which a fastening bolt 420 is formed in a state in which the connection part 310 of the connector 300 is positioned so as to come into contact with the upper or lower part of the connection part 410 of the clamp 400 (410a) may be formed to pass through the top and bottom sequentially.

In addition, as shown in FIG. 8, the connection part 410 of the clamp 400 is provided so as to come into contact with it from the top in a state where the connection part 310 of the connector 300 is located at the bottom, and the connection part 310 protrudes upward. A protruding rib 316 is formed, and an engaging coupling may be formed so that the connecting portion 410 surrounds the protruding rib 316 of the connecting portion 310 . In particular, a protruding rib 316 may be additionally formed in the other direction at the connecting portion 310, and a rib groove 416 may be formed at a corresponding position so that another protruding rib 316 may be inserted into the connecting portion 410. there is.

In addition, as shown in FIG. 9, the connection part 310 of the connector 300 is composed of a plurality of vertical pieces 311, and a fitting slit 312 is provided between adjacent vertical pieces 311, and the clamp ( The connecting portion 410 formed on both sides of the 400) is also composed of a plurality of vertical pieces 411 and is inserted into the fitting slit 312 so as to pass through each of the vertical pieces 311 and 411 through the fastening holes 310a. ) (410a) is formed so that the fastening bolt 420 can be sequentially penetrated vertically.

The connection port 300 and the vertical pieces 311 and 411 of the clamp 400 are composed of a plurality to enable stable fastening, and some hinge behavior is possible during the fastening process by the fastening bolt 420, so it is easy to work. can be secured

In addition, as shown in FIG. 10, the connection part 310 of the connection port 300 is provided with a locking groove 313 open to the top, and the connection part 410 formed on both sides of the clamp 400 A locking piece 412 is formed to be caught in the locking groove 313 of the adjacent connector 300 and can be inserted upward.

At this time, FIG. 10 (b) is a longitudinal cross-sectional view, in which a fastening hole 410a is formed in the fastening piece 413 formed at the bottom of the fastening piece 412, and the fastening bolt 420 penetrating vertically is connected to the connection hole ( 300) may be fastened so as to pass through the fastening hole 310a of the fastening piece 315 provided at the lower end of the connection part 310, and the engaging piece 412 is guided downward along the engaging groove 313 during the fastening process. A stable connection can be expected. In addition, a recess portion concave toward the fastening hole 410a may be formed in the fastening piece 413 to guide insertion of the fastening bolt 420 .

In particular, a connecting slot 314 is formed outside the hooking groove 313 of the connector 300, and a pair of hooking pieces 412 of the clamp 400 are connecting pieces passing through the connecting slot 314. It is connected to 414 so that the clamp 400 can be engaged with the pair of connectors 300.

According to the embodiment shown in FIGS. 7 to 10 described above, adjacent PC protection walls 100 may form a fastening structure via the clamp 400 fastened to the exposed connector 300.

In addition, locking projections 170 and locking grooves 180 are formed on both side surfaces 102 of the PC protection wall 100 in the vertical direction, respectively, so that they can be interlocked with the adjacent PC protection walls 100. As a result, adjacent PC protection walls 100 are interlocked via the mutual locking protrusion 170 and the locking groove 180, thereby forming a multifaceted coupling structure.

In particular, according to the protection wall structure (PW) for the front end PC slab of the present invention, the coupling structure between adjacent PC protection walls 100 formed by the fastening steel bar 200, the locking protrusion 170 and the locking groove 180 The organic combination of the interlocking structure, the connection hole 300 at the bottom of the PC protection wall 100 and the binding structure of the clamp 400 promotes workability and enables solid integration to provide a structurally stable coupling structure. In addition, an elastic rubber pad may be provided between the locking protrusion 170 and the locking groove 180 of the adjacent PC protection wall 100 .

The barrier structure (PW) for the front-side PC slab according to the present invention described above can be implemented in another specific form by those skilled in the art without changing the technical spirit or essential features of the present invention. You will understand that you can.

Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting, and the scope of the present invention is indicated by the claims to be described later rather than the foregoing detailed description, and the meaning and meaning of the claims All changes or modified forms derived from the scope and equivalent concept should be construed as being included in the scope of the present invention.

PW: Firewall structure
10: shear PC slab 11: rebar
100: PC barrier 110: inclined groove
120: through hole 130: foot part
140: filling space 160: block out
170: locking protrusion 180: locking groove
200: fastening steel bar 300: connection port
400: clamp

Claims (7)

It relates to a protective wall structure (PW) installed along the PC slab 10 disposed in the longitudinal direction,
On one side of the PC slab 10, a reinforcing bar 11 is provided to be exposed upward, so that a plurality of PC protection walls 100 are continuously coupled, and the PC protection wall 100 has inclined grooves on both sides of the front surface 101. 110 is provided, and through holes 120 are formed in each inclined groove portion 110 so as to be exposed toward the adjacent side surface 102, so that the fastening steel bar 200 is adjacent to a pair of through holes of the PC protective wall 100 ( 120) are sequentially penetrated and bound, and the reinforcing bar 11 is provided to penetrate the foot portion 130 provided at the bottom of the PC protection wall 100, and the PC protection wall 100 includes the reinforcing bar 11 and A filling space 140 is provided at a corresponding position to fill with non-shrinkage mortar, and a work hole 150 is exposed on the front surface 101 to communicate with the filling space 140, and on both side surfaces 102, respectively. A locking protrusion 170 and a locking groove 180 are formed in the vertical direction to interlock with the adjacent PC protection wall 100, and a retroreflective cover 160 is coupled to the front of the work hole 150, and the retroreflective The cover 160 is provided with a reflective panel 161 to cover the working hole 150, and a fitting sleeve 162 is formed at the rear of the reflective panel 161 to correspond to the size of the working hole 150, Since it is fitted into the work hole 150, it is filled with the work hole 150 to form a finished surface of the mortar that shrinks during curing.
delete delete According to claim 1,
In the PC protection wall 100, a blockout 160 is provided at the corner where the side surface 102 and the front surface 101 or rear surface 103 intersect, and each blockout 160 has a connector 300 so that one side is exposed. A protective wall structure for a front-end PC slab, characterized in that is embedded and bound to the connector 300 and the clamp 400 of the adjacent PC protective wall 100.
delete According to claim 1,
The central axis of the through hole 120 is formed to have a certain curvature, and the central axis of the fastening steel bar 200 is also formed to have the same curvature as the through hole 120. .
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