KR102316098B1 - An abutment structure using and reinforced concrete construction method precast concrete block - Google Patents

Abstract

The present invention relates to an abutment structure using a PC block and an RC construction method which is constructed on a slope. To this end, the present invention comprises: a base unit composed of a plurality of first PC blocks combined at the upper portion of a discarded concrete layer; a sphere unit which is composed of a plurality of second PC blocks which are stacked and coupled in the height direction at the upper portion of the base unit; and an abutment coping unit which is stacked and coupled in the height direction at the upper portion of the sphere unit, and is composed of a plurality of third PC blocks which support a girder connected to a pier. Here, the abutment coping unit has a bridge seat support unit which is provided to support the girder by means of a PC wall body block which is stacked and coupled at the upper surface. The first PC blocks of the base unit, the second PC blocks of the sphere unit and the third PC blocks of the abutment coping unit have a reinforcing space unit which is located on the vertical line of the bridge seat support unit to be connected to each other. As for each reinforcing space unit, in a state in which a pillar reinforcing bar which is installed in parallel with a pile head exposed to the discarded concrete layer passes, an RC construction method is also performed to place a filled concrete on site such that the abutment support unit may be formed to support the load of the girder. Therefore, structural safety may be guaranteed.

Description

Alternating structure using PC block and RC method {AN ABUTMENT STRUCTURE USING AND REINFORCED CONCRETE CONSTRUCTION METHOD PRECAST CONCRETE BLOCK}

The present invention relates to an alternating structure using a PC block installed on a slope and an RC method, and more specifically, a RC (reinforced concrete) method and a PC (precast block) block. It relates to an abutment structure using a PC block and RC method to secure constructability and structural safety through parallel construction.

In general, abutments and pier structures for supporting the upper plate of a bridge are structures that support the load on the top of the bridge, and structurally safety (seismic design, etc.) is important.

In the conventional bridge construction (bridge, overpass, etc.) process, the foundation is built on the ground to support the bridge top plate, the reinforcing bars protruding from the foundation are reinforced, the formwork is assembled, and the concrete is poured and cured. Abutments and pier structures were built.

In this conventional bridge construction process, since construction (RC: reinforced concrete) is mainly performed at the site, manpower, air, and waste have increased due to the complexity of the structure (many materials input), and environmental factors ( weather, winter season, etc.) and the input of a lot of manpower, the construction unit cost and construction period increased, and the risk of safety accidents increased.

In order to solve this problem, in the prior art, a bridge structure was constructed using a precast block to increase workability and shorten the construction period.

However, the conventional precast block has excellent workability and structural compressive strength, but does not satisfy structural safety such as tensile strength and bending moment, so that the precast block has not been commercialized until now.

As a prior document related to the present invention, there is Republic of Korea Patent Registration No. 10-07825511 (November 29, 2007), and the prior document discloses an alternate construction method using a prefabricated block.

Republic of Korea Patent Registration No. 10-07825511

The present invention has been devised in view of the above problems, and the first object of the present invention is to quickly construct an abutment without a separate form using a PC block, and directly construct structural safety that the PC block structure does not have. It is to provide an alternating structure using a PC block and RC method that can be secured using the RC method (concrete casting and internal reinforcement).

A second object of the present invention is that the seat support portion of the alternating coping portion is reinforced and distributed in the reinforcing space portion formed in the first PC block of the base portion, the second PC block of the spherical portion, and the third PC block of the alternating coping portion. The purpose of this is to provide an abutment structure using the PC block and RC method to secure structural safety that can support the load of the girder in parallel with the RC method in which filled concrete is cast on site.

According to the characteristics for achieving the above object, the first invention relates to an alternating structure using a PC block constructed on a slope and an RC method. a spherical part made of a plurality of second PC blocks laminated and coupled to the upper part of the base part in a height direction; and an alternating coping part that is laminated and coupled to the upper part of the spherical part in the height direction, and consists of a plurality of third PC blocks supporting a girder connected to a pier. A bridge support part for supporting the girder is formed through the block, and the first PC block of the base part, the second PC block of the spherical part, and the third PC block of the alternating coping part are reinforcing spaces located in parallel on the vertical line of the bridge support part. It has a part, and each of the reinforcing space parts is made so that the pedestal support part can support the load of the girder in parallel with the RC method in which the filled concrete is poured on-site in a state where the pile head exposed to the discarded concrete layer and the column reinforcing bars are circulated. characterized.

The second invention, in the first invention, is characterized in that the second PC block of the spherical part and the third PC block of the alternating coping part are arranged in a form surrounding the receiving space part open in the slope direction so that the filling material can be filled.

In the third invention, in the second invention, the spherical portion, the second PC block, and the receiving space formed in the third PC block of the alternating coping portion are provided with a grid reinforcing material to prevent settling and settlement of the filling material filled therein. do it with

In the fourth invention, in the first invention, the base portion comprises a cast-off concrete layer constructed so that the pile head installed in the ground is exposed upward, and a plurality of first PC blocks combined in the form of a mold on the upper part of the abandoned concrete layer; It is made of a PC plate inserted into the reinforcing space of each 1st PC block to support the load of the girder. It is integrated, and each of the PC plates is formed with a plurality of through-holes into which the pile head exposed to the discarded concrete layer is inserted, and the root reinforcement through which a plurality of column reinforcements are extended is integrated around the through-holes so that the root reinforcement is exposed upward. do it with

In the fifth invention, in the first invention, each of the first PC block, the second PC block, and the third PC block are mutually addressed through the internal reinforcing bars inserted into the insertion holes formed around the upper perimeter and side surfaces of the reinforcing space portion. characterized.

The sixth invention, in the second invention, is characterized in that a plurality of PC finishing blocks are installed in the transverse direction in the uppermost receiving space of the alternating coping part to be finished.

According to the abutment structure using the PC block and RC method of the present invention, the abutment can be quickly constructed without a separate form using the PC block, and the RC method (concrete and It has an effect that can be secured using internal reinforcing bars).

In addition, the pedestal support part of the alternating coping part is an RC in which the filled concrete is poured in the state that the column reinforcement is reinforced and distributed in the reinforcing space formed in the first PC block of the base part, the second PC block of the spherical part, and the third PC block of the alternating coping part. It has the effect of securing structural safety that can support the load of the girder in parallel with the construction method.

In addition, through the inner reinforcing bar inserted around the upper perimeter and side of the reinforcing space part, the foundation, the spherical part and the alternating coping part can be installed integrally connected to each other, and the safety of the structure can be secured by preventing buckling due to the load of the girder. There are features that can be

In addition, through the filling material filled in the receiving space formed in the spherical part and the alternating coping part, it has the characteristics of stabilizing the slope, reducing the construction cost, and securing the ease of construction and structural safety.

1 is a perspective view of an alternating structure using a PC block and RC method according to the present invention;
2 and 3 are perspective views showing step-by-step fabrication of the foundation;
Figure 4 is a perspective view showing a spherical portion stacked on the base of Figure 3;
5 is a perspective view showing an alternating coping portion laminated to the sphere of FIG. 4;
6 is a perspective view showing the coupling state of the PC wall block and the PC finishing block in the alternating coping unit of FIG. 5;
7 is a cross-sectional configuration diagram of an alternating structure using a PC block and RC method according to the present invention;
8 is a perspective view of an alternating structure using a PC block and an RC method according to another embodiment.

The following objects, other objects, features and advantages of the present invention will be readily understood through the following preferred embodiments in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms.

Rather, the embodiments introduced herein are provided so that the disclosed subject matter may be thorough and complete, and that the spirit of the present invention may be sufficiently conveyed to those skilled in the art.

The embodiments described and illustrated herein also include complementary embodiments thereof.

In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, the terms 'comprise' and/or 'comprising' do not exclude the presence or addition of one or more other components.

Hereinafter, the present invention will be described in detail with reference to the drawings. In describing the specific embodiments below, various specific contents have been prepared to more specifically explain and help the understanding of the invention. However, a reader having enough knowledge in this field to understand the present invention can recognize that it can be used without these various specific details. In some cases, it is mentioned in advance that parts that are commonly known and not largely related to the invention in describing the invention are not described in order to avoid confusion in describing the invention.

Hereinafter, the alternating structure using the PC block and the RC method according to the present invention will be described in detail together with the accompanying drawings.

1 is a perspective view of an alternating structure using a PC block and RC method according to the present invention, FIGS. 2 and 3 are perspective views showing the step-by-step fabrication of the foundation, and FIG. 4 is a perspective view showing a sphere stacked on the base of FIG. 5 is a perspective view showing the alternating coping part stacked on the spherical part of FIG. 4 , FIG. 6 is a perspective view showing the combined state of the PC wall block and the PC finishing block in the alternating coping part of FIG. 5 , and FIG. 7 is the present invention It is a cross-sectional configuration diagram of an alternating structure using a PC block and RC method according to

As shown in Figs. 1 to 7, the present invention is to secure constructability and structural safety by concurrently constructing a RC (reinforced concrete) method and a PC (precast concrete block) block. It relates to an alternating structure 100 using a PC block and RC method.

The alternating structure 100 using the PC block and RC method of the present invention is installed on the slope, and is composed of a base portion 10, a spherical portion 20, and an alternating coping portion 30.

The base portion 10 is composed of a discarded concrete layer 13 , a plurality of first PC blocks 15 , and a PC plate.

Here, the cast-off concrete layer 13 is constructed on the foundation ground 11, and at this time, a plurality of pile heads 12 arranged at regular intervals along a grid shape are installed underground in the foundation ground 11 to form the foundation. (10) is constructed so that the foundation can be laid.

The discarded concrete layer 13 is constructed so that the upper part of the pile head 12 is partially exposed to provide a structure that can be connected and constructed with each of the first PC blocks 15 .

And each of the first PC blocks 15 are combined and seated on the top of the discarded concrete layer 13 to form a single frame.

Each of the first PC blocks 15 is RC in which the filling concrete is poured into the RC structural reinforcing bar 16 in the form of a mesh inserted with the reinforcement space SP1 formed to support the load of the girder 200 therebetween. It is integrated with the discarded concrete layer 13 using a construction method.

In addition, the PC plate 14 is inserted into the reinforcement space SP1 of each of the first PC blocks 15 to support the load of the girder 200 .

Each of these PC plates 14 is formed with a plurality of through-holes 141 into which the pile head 12 exposed to the discarded concrete layer 13 is inserted, and a plurality of column reinforcing bars are formed around the through-holes 141 . Root reinforcement 142 for addressing (50a) is an integrated structure to be exposed upward.

The spherical part 20 is made of a plurality of second PC blocks 21 that are multi-layered in the height direction on the upper part of the base part 10 . The number of stacks of the second PC blocks 21 may vary according to the height of the alternation.

The alternating coping portion 30 is laminated and coupled to the upper portion of the spherical portion 20 in the height direction, and consists of a plurality of third PC blocks 31 supporting the girder 200 connected to the pier (not shown).

The alternating coping unit 30 includes a plurality of PC wall blocks 32 stacked and coupled to the upper surface of the third PC block 31, wherein the alternating coping unit 30 includes the PC wall block ( 32) through the pedestal support part 311 for supporting the girder 200 is formed.

At this time, the 2nd PC block 21 of the spherical part 20 and the 3rd PC block 31 of the alternating coping part 30 are formed in the first PC block 15 of the base part 10 with a reinforcing space part ( A reinforcing space portion SP1 of the same size in communication with SP1) is formed so that a plurality of column reinforcing bars 50a that are addressed to the root reinforcing bars 142 exposed to the PC plate 14 can be reinforced.

And the bridge seat support part 311 of the alternating coping part 30 is formed by pouring filled concrete into each of the reinforcing space parts SP1, so that sufficient rigidity against the vertical pressure caused by the load of the girder 200 is maintained. configured to be able to

In more detail, the seat support part 311 of the alternating coping part 30 includes the first PC block 15 of the base part 10 and the second PC block 21 of the spherical part 20 and the alternating nose. The load of the girder 200 was reduced by parallel with the RC method in which the filled concrete was poured on-site while the column reinforcement 50a was reinforced and circulated in the reinforcement space SP1 formed in the 3rd PC block 31 of the ping part 30. Structural safety can be secured by securing the tensile and compressive strength that can be supported.

On the other hand, the second PC block 21 of the spherical part 20, the third PC block 31 and the PC wall block 32 of the alternating coping part 30 surround the receiving space part SP2 open in the slope direction. placed in the form

Each of these receiving spaces SP2 is filled with a heavy filler material (crushed stone, gravel, reinforcing earth) 40 in order to stabilize the slope, reduce construction cost, and secure ease of construction and structural safety.

At this time, each receiving space (SP2) formed in the spherical part 20, the second PC block 21, and the third PC block 31 and the PC wall block 32 of the alternating coping part 30 is filled inside. A grid reinforcing material 50c is interposed to prevent settling and settlement of the filler 40 to provide a structure capable of stabilizing the filler material.

Meanwhile, the first PC block 15 of the base part 10, the second PC block 21 of the spherical part 20, and the third PC block 31 of the alternating coping part 30 are reinforced space parts SP1. A plurality of insertion holes (H) for inserting the inner reinforcing bar (50b) around the upper circumference and side of the is formed.

The base part 10, the spherical part 20, and the alternating coping part 30 may be integrally connected to each other through the internal reinforcement 50b inserted into each of the insertion holes H, and the internal reinforcement The tensile strength is introduced by (50b) to prevent buckling due to the load of the girder 200, thereby ensuring the safety of the structure.

On the other hand, in the receiving space (SP2) formed in the PC wall block 32 of the alternating coping part 30, a plurality of PC finishing blocks 321 are installed in the transverse direction and finished, so that a structure capable of improving workability is provided. .

8 is a perspective view of an alternating structure using a PC block and an RC method according to another embodiment.

8, the PC wall block 32 is further formed with a plurality of seating grooves 322 for accommodating the ends of the girder 200 seated on the pedestal support part 311 to determine the position of the girder 200. It provides a structure that can be easily combined without the need for adjustment, thereby improving assembling properties.

At this time, both ends of the PC wall block 32 may be configured to further include a tension steel bar (R) fixed across the transverse direction.

Therefore, the PC wall block 32 can increase the compressive strength and tensile strength through the tension steel rod (R) fixed in the transverse direction, thereby stably securing the bearing capacity for the girder 200 that contracts and expands or flows in the longitudinal direction. You can build a structure that can do that.

The alternating structure using the PC block and RC method of the present invention has the following distinctive features.

First: Using PC blocks, the abutment can be quickly constructed without a separate formwork, and structural safety that PC block structures do not have can be secured by using the RC method (concrete casting and internal reinforcement) directly constructed. .

Second: The pedestal support portion of the alternating coping portion is placed in a state where column reinforcement is reinforced and distributed in the reinforcing space formed in the first PC block of the base portion, the second PC block of the spherical portion, and the third PC block of the alternating coping portion. It has the characteristic of securing tensile strength and compressive strength that can support the load of the girder by using one RC method in parallel.

Third: The foundation, the spherical part, and the alternating coping part can be integrally connected and installed with each other through the inner reinforcing bars inserted around the upper perimeter and side perimeters of the reinforcing space, and the tensile strength is introduced through the inner reinforcing bars to increase the load of the girder. It has a feature that can prevent buckling and ensure the safety of the structure.

Fourth: Through the filling material filled in the receiving space formed in the spherical part and the alternating coping part, it has the characteristics of stabilizing the slope, reducing the construction cost, and securing the ease of construction and structural safety.

The embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention and do not represent all the technical spirit of the present invention, so various equivalents that can be substituted for them at the time of the present application It should be understood that there may be variations and examples.

10: base part 11: foundation ground 12: pile tofu
13: abandoned concrete layer 14: PC plate
141: through hole 142: root reinforcement
15: 1st PC block 16: RC structural reinforcing bar
20: sphere 21: 2nd PC block
30: shift coping part 31: 3rd PC block 311: bridge seat support part
32: PC wall block 321: PC finishing block
322: seating groove R: tension steel bar
40: filling material
50a: column reinforcement 50b: internal reinforcement 50c: grid reinforcement
SP1: Reinforcing space SP2: Receiving space H: Insertion hole
100: Alternating structure using PC block and RC method
200: girder

Claims (6)

It relates to an abutment structure using the PC block and RC method constructed on the slope,
A base portion 10 consisting of a plurality of first PC blocks 15 combined on top of the discarded concrete layer 13;
a spherical part 20 made of a plurality of second PC blocks 21 stacked on top of the base part 10 in a height direction; and
Alternating coping part 30 consisting of a plurality of 3rd PC blocks 31 that are laminated and coupled to the upper portion of the spherical part 20 in the height direction and support the girders 200 connected to the piers;
The alternating coping part 30 is formed with a bridge support part 311 for supporting the girder 200 through a PC wall block 32 laminated and bonded to the upper surface,
The first PC block 15 of the base part 10, the second PC block 21 of the spherical part 20, and the third PC block 31 of the alternating coping part 30 are the seat support part 311. has a reinforcing space portion (SP1) positioned in common on a vertical line of
Each of the reinforcing space parts SP1 is provided with the pile head 12 exposed to the discarded concrete layer 13 and the RC method in which the filled concrete is poured on-site in a state in which the continuous column reinforcement 50a is circulated, in parallel with the pedestal support Alternate structure using a PC block and RC method, characterized in that the part 311 is made to support the load of the girder 200.
According to claim 1,
The 2nd PC block 21 of the spherical part 20 and the 3rd PC block 31 of the alternating coping part 30 include a receiving space SP2 opened in the slope direction so that the filling material 40 can be filled. Alternating structure using PC block and RC method, characterized in that it is arranged in a surrounding form.
3. The method of claim 2,
The spherical part 20, the second PC block 21, and the accommodating space part SP2 formed in the third PC block 31 of the alternating coping part 30 prevents the settling of the filling material 40 filled therein. Alternating structure using a PC block and RC method, characterized in that the grid reinforcement (50c) for the lower ground is interposed.
According to claim 1,
The base part 10 is a discarded concrete layer 13 constructed so that the pile head 12 installed underground is exposed to the upper part,
A plurality of first PC blocks 15 combined in the form of a mold on the top of the discarded concrete layer 13,
It consists of a PC plate 14 inserted into the reinforcing space SP1 of each of the first PC blocks 15 to support the load of the girder 200,
Each of the first PC blocks 15 is integrated with the discarded concrete layer 13 by pouring concrete filled into the RC structural reinforcing bars 16 inserted with the reinforcing space portion SP1 therebetween,
Each of the PC plates is formed with a plurality of through-holes 141 into which the pile head 12 exposed to the discarded concrete layer 13 is inserted, and a plurality of column reinforcing bars 50a are formed around the through-holes 141. Alternating structure using a PC block and RC method, characterized in that the speech root reinforcement 142 is integrated to be exposed upward.
According to claim 1,
Each of the first PC block 15, the second PC block 21, and the third PC block 31 is an internal reinforcing bar ( 50b) Alternating structure using PC block and RC method, characterized in that it is communicated with each other.
3. The method of claim 2,
An alternating structure using a PC block and RC method, characterized in that a plurality of PC finishing blocks 321 are installed in the transverse direction in the uppermost receiving space SP2 of the alternating coping unit 30 to be finished.

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