KR101250385B1 - Pier with Vertical Split type Precast Concrete Units and Constructing Method thereof - Google Patents

Abstract

Precast concrete piers unit divided by the vertical cutting surface is assembled to form the piers, and by constructing the piers in the form of copings on top of the piers, by using the advantages of prefabricated piers The present invention relates to a prefabricated piers having a piers by assembling a vertical cutaway precast concrete piers unit with a new structure that improves structural weaknesses, and a construction method thereof.
In the present invention, the pier part 100 is formed by being assembled in the transverse direction facing the PC vertical cutting unit (1) vertically cut by the vertical cutting surface; As for the PC vertical cutting unit 1, the recessed part 10 is formed in the inner surface; A main reinforcing bar (11) is disposed in the vertical direction in the PC vertical cutting unit (1), wherein upper and lower ends of the main reinforcing bar (11) are further extended to protrude out of the PC vertical cutting unit (1); The outer surface of the concave portion 10 is provided with a protruding coupling member 20 protruding, so that the hollow 10 perpendicular to the inside of the pier portion 100 is formed while the concave portions 10 face each other and are closed; The filler filling material 110 is filled in the state in which the protruding binder 20 is located in the hollow, so that the pair of PC vertical cutting units 1 which are divided in the lateral direction are combined to form the piers 100. The vertical cut prefabricated piers are provided, and a method for constructing the same is also provided.

Description

Pier with vertical split type precast concrete units and constructing method

The present invention relates to a pier consisting of a coping part and a pier part and a construction method thereof, and specifically, to construct a pier part by assembling a precast concrete pier part unit divided by a vertical cutting surface, and forming a coping part on an upper part of the pier part. Prefabricated piers having piers by assembling vertically cut-in precast concrete piers units with a new structure that improves structural weaknesses of prefabricated piers while taking advantage of prefabricated piers It is about a construction method.

In constructing a piers having columnar piers and copings thereon, conventionally, precast concrete members are fabricated with the piers cut in the transverse direction, and the precast concrete members are laminated in this order in a vertical direction. Techniques have been mainly proposed.

Conventional prefabricated bridge piers using precast concrete members are obtained by sequentially stacking a plurality of precast concrete blocks having a small height in the vertical direction, and arranging tension members such as steel bars and steel wires to vertically penetrate the stacked precast concrete blocks. In the state, the tension member is tension-fixed in the longitudinal direction of the piers, that is, the vertical direction, and the prestress is introduced to integrate a plurality of precast concrete blocks stacked together.

As such, in the conventional prefabricated piers, the tension member must be placed through the entire height of the piers in the vertical direction, and a tension force must be introduced. Therefore, a large tension device is required to introduce a large tension force to the tension members disposed over the entire vertical length. Thereby, there was a problem in that the construction cost is excessive.

In addition, the pier not only receives compressive force but also receives a bending load. In a structure in which a plurality of precast concrete blocks are stacked as in the prior art, since the pier has low bending stiffness, the pier has a problem in that it is vulnerable to large bending loads. .

The present invention has been developed to solve the problems of the prior art as described above, specifically in the construction of prefabricated bridge piers, through the tension member in the vertical direction through the structural arrangements to give a large tension over the entire vertical length The object of the present invention is to overcome the limitations and to prevent an increase in cost and a deterioration in workability due to the arrangement of the tension member and the provision of tension force.

In particular, the object of the present invention is to increase the flexural rigidity of piers and to ensure sufficient stability against flexural loads acting on the piers.

In order to achieve the above object, in the present invention, as a pier consisting of a column-shaped pier is installed vertically, and a coping unit formed on the upper end of the pier, the pier is a vertical incision surface passing through the vertical center line of the pier. By vertically inverted and equally divided into two equally divided PC vertical cutting unit is formed in the transverse direction; The PC vertical cutting unit is formed with a recess on the inner surface facing each other; Main reinforcing bars are disposed in the vertical direction in the PC vertical cutting unit, and upper and lower ends of the main reinforcing bars protrude further outward of the PC vertical cutting unit; The outer surface of the concave portion is provided with a protruding bonding member is protruding, when a pair of PC vertical cutting unit is coupled to face each other in the transverse direction, the concave portions are closed to face each other, while the hollow in the vertical direction inside the pier portion Formed; Vertically assembled prefabricated piers, characterized in that the pier is formed by the combination of a pair of PC vertical cutting unit divided in the transverse direction, the coupling filler is filled in the hollow in the state that the projecting binder is located in the hollow This is provided.

In addition, in the present invention, as a construction method of such a pier, in detail, the vertical piercing section passing through the vertical center line of the pier vertically cut the column-shaped piers to have an evenly divided into two equally shaped inner surface to face each other PC vertical incision of the structure is formed in the concave portion is arranged in the vertical direction and the main reinforcing bar, the upper and lower ends of the main reinforcement is further extended to the outside and protruding bonding member protrudes to the outer surface of the concave portion The unit is made of precast concrete member; Transfer the manufactured PC vertical cutting unit to the site, and a pair of PC vertical cutting units face each other in the transverse direction so that the concave portions face each other; When a pair of PC vertical cutting units face each other in the lateral direction, the concave portions face each other and are closed to each other while the protruding binder is located in the hollow formed in a direction perpendicular to the inside of the pier, and the filler filling material is disposed in the hollow. There is provided a construction method of a vertically cut prefabricated piers, characterized in that to form a bridge by combining a pair of PC vertical cutting unit that was divided by filling the.

In the pier and the construction method of the present invention, the coping portion may be made of precast concrete, in this case, the bottom surface of the portion where the coping portion is connected to the pier portion, the reinforcing hole is formed concave inside ; A filling material injection hole is formed in the coping portion in communication with the reinforcing rod insertion hole; When the coping part is installed on the pier part, the hollow part reinforcing bar is disposed over the hollow of the pier part and the reinforcing hole of the coping part; The filler filling material may be injected through the filler filling hole so that the hollow reinforcing reinforcing bar may be embedded in the filler filling material which is filled in communication with the hollow insertion hole of the pier and the reinforcing hole of the coping part.

 In particular, in this case, a coping portion insertion hole into which the upper end portion of the main reinforcing bar projecting into the upper end portion of the pier portion is formed at the lower surface of the piercing portion in the coping portion; A rebar coupler is embedded in the inside of the coping portion insertion hole; When the coping portion is placed on the upper portion of the pier, the main reinforcing bar of the PC vertical cutting unit is inserted into the coping portion insertion hole is fastened to the rebar coupler and the coping portion and the pier can be connected and integrated with each other by the main reinforcing bar.

Furthermore, in the present invention, the piers are divided into a plurality of sections in the vertical direction, each divided section consisting of a combination of a pair of PC vertical cutting units; The connecting body is disposed between the adjacent piers in the vertical direction, the connecting body has a thickness in the vertical direction, has an outer surface corresponding to the end surface of the upper and lower ends of the piers, and correspond to the hollow inside the piers. Consists of a ring-shaped member is formed in the connecting hollow portion in communication with the hollow position; The upper and lower surfaces of the connecting body is formed with a main reinforcing bar insertion hole is inserted into the main reinforcing bars provided in each of the pier connecting up and down; The reinforcing bar insertion hole is provided with a rebar coupler, and is provided in a PC vertical cutting unit of a pier that extends to the upper and lower surfaces of the connecting body, and the upper and lower ends of the main reinforcing bar projecting to the outer surface are inserted into the main reinforcing hole formed in the connecting body. Continuous with each other in the vertical direction by the reinforcing coupler; A finishing material is injected into the main reinforcing rod insertion hole while the main reinforcing bars are continuous with each other in the connecting body; The plurality of sections divided in the vertical direction of the piers may be integrally connected by the hollow structure of the piers connected to the top and bottom of the coupling body and the coupling filler is filled in the coupling hollow of the coupling body. At this time, the hollow reinforcing reinforcing bar, it is disposed over the hollow of the bridge portion connected to the upper and lower of the connecting body and the connecting hollow of the connecting body, may be embedded in the coupling filler.

According to the present invention, in constructing the pier prefabricated, it is not necessary to place the tension member in the vertical direction, and it is not necessary to impart a large tension force over the entire vertical length, and thus increase the cost due to the arrangement of the tension member and the provision of the tension force. And the effect which can prevent the fall of workability is exhibited.

In addition, in the present invention, since the bending rigidity of the bridge is greatly increased, it is possible to ensure sufficient stability against the bending load acting on the bridge.

Furthermore, in the conventional prefabricated bridge piers, a large number of precast concrete blocks are vertically stacked one by one, whereas in the present invention, since the units are assembled in the horizontal direction, the piers having the same height are constructed in the prior art. Since the number of divisions can be reduced, there is an advantage that the assembly work of the divided portions can be reduced.

In particular, the precast concrete vertical cutting unit constituting the pier in the present invention has a structure that minimizes the cross-section of the precast member and fills the rest in the field by forming a recess in the interior, it is difficult to transport, lift, etc. There is no advantage, so that the precast concrete vertical cutting unit can be manufactured to a desired length. Accordingly, the minimum number of units can be used to easily construct a pier having a desired height.

1 is a schematic exploded perspective view of a vertical cut-away pier according to an embodiment of the present invention.
FIG. 2 is a schematic assembled perspective view of the vertically cut-away pier of the present invention shown in FIG. 1.
3 is a schematic perspective view of a precast concrete vertical cutting unit forming each part of the embodiment shown in FIGS. 1 and 2.
Figure 4a is a schematic perspective view showing the coping portion of the vertically cut prefabricated piers according to the present invention.
4B is a schematic cross-sectional view along the line AA of the coping portion shown in FIG. 4A.
FIG. 5 is a schematic perspective view showing a state in which reinforcing bars are arranged in a hollow in a state where two precast concrete vertical cutting units face each other.
6 is a schematic perspective view of a hole forming member used to form a coping portion insertion hole.
FIG. 7 is a schematic perspective view of a precast concrete vertical cutting unit having a connecting plate and a protruding binder having shear studs coupled to both sides of the connecting plate. FIG.
8 is a schematic exploded perspective view of a vertical cut-away pier according to another embodiment of the present invention in which the pier is divided into two sections in the vertical direction.
FIG. 9 is a schematic assembly perspective view of a vertical cut-away pier according to the embodiment shown in FIG. 8.
10 and 11 are schematic perspective views of one embodiment of a connecting body for connecting a piers divided in the embodiment shown in FIGS. 8 and 9, respectively.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Although the present invention has been described with reference to the embodiments shown in the drawings, it is to be understood that the technical idea of the present invention and its essential structure and operation are not limited thereby.

1 is a schematic exploded perspective view of a vertically cut modular pier according to an embodiment of the present invention, Figure 2 is a schematic assembled perspective view of a vertically cut modular pier of the present invention shown in FIG. 3 shows a schematic perspective view of a precast concrete vertical cutting unit 1 constituting the pier 100 in the embodiment shown in FIGS. 1 and 2.

As shown in Figure 1 and 2, in the vertically cut prefabricated piers according to the present invention, the columnar pier 100, the vertical incision corresponding to the vertical plane, that is, the vertical plane passing through the vertical center line of the piers. It consists of the assembly of two precast concrete vertical cutting units (1) which are cut vertically by the plane and divided evenly. Hereinafter, this will be abbreviated as "PC vertical cutting unit 1". That is, the two PC vertical cutting units 1 extending vertically face each other in the lateral direction (the direction orthogonal to the vertical direction) to be in contact with each other and integrally coupled, thereby forming a vertical columnar pier.

FIG. 3 shows a schematic perspective view of the PC vertical cut-out unit 1 constituting the pier 100 in the embodiment shown in FIGS. 1 and 2. As shown in the figure, a recess 10 is formed on the inner surface of the PC vertical cutting unit 1 to face each other. The recess 10 is formed to extend in the vertical direction of the PC vertical cutting unit 1, when the two PC vertical cutting units 1 are joined to face each other in the horizontal direction, each PC vertical cutting As the concave portions 10 formed in the unit 1 face each other and are closed, a hollow is formed in a vertical direction in the interior of the pier 100. Protruding coupling member 20 protrudes from the outer surface of the recess 10. Since the protruding bonding member 20 protrudes to the outer surface of the recess 10 as described above, the protruding bonding member 20 is positioned in the hollow when the two PC vertical cutting units 1 are joined to face each other in the transverse direction. Done.

1 to 3, the protruding binder 20 is made of a loop reinforcing bar. That is, the reinforcing bar forms a closed loop and the end of the reinforcing bar is made of the protruding binder 20 in the form of a loop reinforcing embedded in the concrete of the PC vertical cutting unit 1. At this time, the buried end of the loop reinforcement, i.e., the end embedded in the PC vertical cutting unit 1, is preferably bound to the reinforcing steel bars reinforcing inside the PC vertical cutting unit 1. The reinforcing reinforcing bars embedded in the PC vertical cutting unit 1 may include a main reinforcing bar 11 arranged in a vertical direction, and may further include a transverse reinforcing bar across the main reinforcing bar 11. Preferably, the buried end of the reinforcing bar is bound to the main reinforcing bar 11 or the transverse bar. Such loop reinforcement, that is, the projecting binder 20 is disposed in plural number at intervals in the vertical direction. The loop reinforcing bar is an example of the protruding binder 20, and the protruding binder 20 is not limited to the loop bar. As described below, the protruding binder 20 may be formed in the form of a shear stud, or may be formed in various other forms, for example, a protrusion arrangement of a simple bar reinforcing bar without forming a loop.

The upper end of the main reinforcing bar 11 arranged in the vertical direction in the PC vertical cutting unit 1 is for coupling with the coping portion or for continuous coupling with another divided PC vertical cutting unit of the upper pier as described later. It protrudes further extending out of the upper surface of the PC vertical cutting unit 1. On the other hand, as shown in the figure, in the case of the pier is located at the bottom of the lower end of the main reinforcing bar 11 for connection with the base portion 300 may further extend to the outside of the lower surface of the PC vertical cutting unit (1) have. The lower end of the main reinforcing bar 11 extended to the outside, is embedded in the concrete to be poured during the manufacturing of the base portion 300, for this purpose, the lower end of the main reinforcing bar 11 can be bent in the transverse direction. .

FIG. 4A shows a schematic perspective view of a coping portion 200 according to the invention and FIG. 4B shows a schematic cross sectional view along line AA of the coping portion 200 shown in FIG. 4A. As shown, the coping portion 200 may also be prefabricated with precast concrete and coupled to the piers. At this time, in the coping part 200 made of precast concrete, a rebar insertion hole 220 into which the hollow part reinforcing bar 30 to be described later is inserted is formed on a lower surface of the part connected to the pier part 100. In addition, the coping part 200 is additionally formed with a filler injection hole 210 in communication with the reinforcement insertion hole 220.

Next, a description will be given of the construction method of the vertical cut-away pier according to the present invention as described above.

As described above, the reinforcing bar is arranged inside, the recess 10 is formed on the inner surface, the column-shaped half-shaped PC in which the protruding bonding member 20 protrudes out of the recess 10. The vertical cutting unit (1) is made of precast concrete and transferred to the site.

The two PC vertical cutting units 1 are laterally opposed to each other so that the recesses 10 face each other so that the hollows are formed by the recesses 10. At this time, it is possible to wrap the outer surface of the PC vertical cutting unit (1) facing each other with a band (not shown) so that the two PC vertical cutting units (1) are kept facing each other during construction. The two PC vertical cutting units (1) facing each other in this manner are erected vertically, and the reinforcing bars protruding to the lower end of the PC vertical cutting unit (1) (in the embodiment shown in FIG. Construct the foundation 300 so as to be embedded in, and in parallel to the filling the filling filler 110, such as concrete or non-contraction mortar in the hollow. At this time, the protruding binder 20 protruding in the hollow is embedded in the coupling filler (110).

As such, the coupling filler 110 is filled in the hollow, and the coupling filler 110 is inserted into the coupling filler 110 in a state in which the protrusion coupling member 20 fixed to each PC vertical cutting unit 1 is embedded in the coupling filler 110. By curing, the PC vertical cutting unit (1) of both sides are combined to form a bridge portion 100 by forming an integral.

Particularly, as described above, since the protruding binder 20 provided in the two PC vertical cutting units 1 is embedded in the filler filler 110 filled in the hollow, the two PC vertically divided into two sides by this configuration. The cutting unit 1 is firmly coupled to form a fully integral piers.

When the base portion 300 is installed and the two PC vertical cutting units 1 are integrally coupled as described above and the piers 100 are constructed perpendicular to the base portion 300, the coping portion 200 is formed. Is installed on the upper portion of the pier 100. The coping part 200 may be built by on-site pouring concrete, but as illustrated above, the coping part 200 is also pre-made of precast concrete and transferred to the site, and then coupled to the upper part of the pier part 100. Can be installed. As such, in the coupling installation of the coping part 200 made of precast concrete on the upper part of the pier part 100, the hollow reinforcing bar 30 is disposed over the pier part 100 and the coping part 200. It is desirable to. FIG. 5 is a schematic perspective view illustrating a state in which reinforcing bars 30 are disposed in the hollow of the piers 100 in a state where two PC vertical cutting units 1 face each other and are in contact with each other. 5 example, as shown in the embodiment, the hollow reinforcement reinforcement 30 may be configured in the form of a reinforcing steel bar consisting of vertical reinforcement and horizontal reinforcement, a portion of the pier in the longitudinal direction of the hollow reinforcement reinforcement 30 The hollow of the pier 100 and the reinforcing hole of the coping part 200 so that the rest of the reinforcing bar 30 is located in the reinforcing hole 220 of the coping part 200. The hollow reinforcing bar 30 is disposed over 220. When the hollow reinforcing bar 30 is provided as described above, the coupling filler 110 has a coping part 200 disposed on the pier part 100 so that the hollow of the pier part 100 and the rebar insertion hole of the coping part 200 ( 220) In the connected state, it is preferable to pour the combined filler material 110 in a batch. That is, the coupling filler 110 to be filled in the hollow of the bridge portion 100 is to be integrally placed in the reinforcing hole 220 of the coping portion 200. In order to collectively place the coupling filler 110, the coping part 200 has a filler injection hole 210 formed in communication with the reinforcing hole 220. Therefore, the coupling filler 110 from the outside through the filler injection hole 210 can be injected into the hollow of the reinforcing hole 220 and the pier (100). When the hollow part reinforcing bar 30 is placed in the interior of the coupling filler 110 filled in the hollow, an additional reinforcing action is made by the hollow part reinforcing bar 30, and the hollow part reinforcing bar 30 Since it is disposed across the hollow of the pier 100 and the reinforcing hole 220 of the coping 200, the bending rigidity at the portion where the pier 100 and the coping 200 are connected is greatly increased. The increasing effect is exerted.

Of course, even when the coping part 200 is made of cast-in-place concrete, it is possible to use the hollow reinforcing bar 30 as described above. That is, a portion of the hollow reinforcing bar 30 in the longitudinal direction is positioned in the hollow of the pier 100, the remaining portion of the hollow reinforcing bar 30 protrudes to the outside of the upper end of the pier 100 coping portion The hollow portion reinforcing bar 30 may be disposed over the pier part 100 and the coping part 200 by being embedded in the site-pouring concrete for 200.

On the other hand, in the present invention for the integral coupling of the bridge portion 100 and the coping portion 200 of the assembly structure may have the following configuration. A coping part insertion hole 120 is formed at a lower surface of the coping part 200 in the direction of the pier part 100 in which the top end of the cast reinforcing bar 11 protruding to the top end of the pier part 100 is inserted (FIGS. 4A and 4B). Reference). In the inside of the coping part insertion hole 120, a known reinforcing coupler (represented by member number 155 of FIG. 4B) is disposed in a landfill. Therefore, when the coping part 200 is placed on the pier 100, the main reinforcing bar 11 of the PC vertical cutting unit 1 is inserted into the coping part insertion hole 120 to be fastened to the rebar coupler 155 and the nose The ping part 200 and the pier part 100 are connected and integrated with each other by the main reinforcing bar 11. After the main reinforcing bar 11 of the PC vertical cutting unit 1 is inserted into the coping part insertion hole 120 and fastened to the rebar coupler 155, the coping part insertion hole 120 has a finishing material such as non-contraction mortar. It is preferable to be filled. 6 is a schematic perspective view of the hole forming member 130 used to form the coping portion insertion hole 120, the end of the main reinforcing bar 11 is inserted into the coping portion insertion hole 120 to the rebar coupler One embodiment of a configuration capable of efficiently filling the finish material in the coping portion insertion hole 120 after being fastened is shown in detail in FIGS. 3 and 6. Specifically, the coping portion insertion hole 120 is formed in the vertical direction in which the main reinforcing bar 11 is inserted, the rebar coupler is fixedly disposed inside the coping portion insertion hole 120, the coping portion insertion hole 120 The finish material injection hole 121 and the finish material discharge hole 122 formed from the outer surface of the coping portion 200 is in communication with each other. Therefore, in the state in which the end of the main reinforcing bar 11 is inserted into the coping part insertion hole 120 and fastened to the rebar coupler, when the finishing material is injected through the finishing material injection hole 121, the finishing material is inserted into the coping part insertion hole 120. When the finish material is filled, the finish material flows out through the finish material discharge hole 122. That is, by confirming that the finish flows through the finish discharge hole 122 formed above the finish injection hole 121, it can be seen that the finish is faithfully filled in the coping portion insertion hole 120. . In order to efficiently form the coping part insertion hole 120, the finish injection hole 121, and the finish discharge hole 122, as shown in FIG. 6, a hole forming hole 140 may be used. The hole forming tool 140 is a vertical vertical tube member 141, the upper connecting pipe 142 is communicated to the upper end of the vertical pipe member 141, and is communicated to the lower portion of the vertical pipe member 141 It may be made of a lower connecting pipe (143). When manufacturing the coping part 200 with concrete, if the hole forming hole 140 is disposed in advance, the coping part insertion hole 120 is easily formed by the vertical pipe member 141, the upper connection Finishing material discharge hole 122 is easily formed by the tube 142, the finishing material injection hole 121 can be easily formed by the lower connection pipe 143. However, in the present invention, such a hole forming hole 140 is an example developed to be used conveniently, the coping part insertion hole 120, the finish material injection hole 121 and the finish material discharge hole 122 is formed by another method It may be.

Meanwhile, as shown in the drawing, unevenness may be formed on a joint surface to which the two PC vertical cutting units 1 are joined to each other. In the embodiment shown in the drawings, the stepped recesses 28 are formed on the joint surface of one side PC vertical cutting unit 1, and the stepped recesses 28 are formed on the joint surface of the other side PC vertical cleavage unit 1. The engaging convex part 29 which has the shape corresponding to () is formed. Accordingly, when the two PC vertical cutting units 1 are laterally engaged, the stepped recesses 28 and the engagement protrusions 29 are engaged with each other. However, the shape of the unevenness formed on the joint surface of the two PC vertical cutting units 1 is not limited to the stepped recesses 28 and the engaging convex portion 29 above, and can be variously changed.

On the other hand, in the above embodiment has been described as the protruding binder 20 is composed of a loop reinforcing, as mentioned above, the protruding binder 20 may be modified in various forms. As another example of the protruding binder 20 in FIG. 7, a PC vertical incision having a connecting plate 26 and a protruding binder 20 having a shear stud 25 coupled to both sides of the connecting plate 26. A schematic perspective view of the unit 1 is shown.

As shown in FIG. 7, the protruding bonding member 20 is manufactured in a form in which a plurality of shear studs 25 are provided on both sides of the connecting plate 26 made of a plate and extended in the vertical direction, respectively. Protruding binder 20 may be provided in the recess 10 of the PC vertical cutting unit (1). At this time, the shear stud 25 protruding on one side of the connecting plate 26 is embedded in the concrete of the PC vertical cutting unit 1 so that the connecting plate 26 is firmly coupled to the PC vertical cutting unit 1. The shear stud 25 protruding to the other side of the connecting plate 26 is protruded to exist on the outer surface of the recess 10. Therefore, when the two PC vertical cutting unit (1) is coupled to face in the transverse direction, the shear stud 25 protruding to the other side of the connecting plate 26 is located in the hollow and is embedded in the coupling filler 110 to the PC It is used to build a solid integration including shear connection between the vertical cutting unit (1) and the coupling filler (110).

On the other hand, in the embodiment shown in Figs. 1 and 2 has been described that the PC vertical cutting unit 1 constituting the pier 100 is made of one member extending in the vertical direction, a plurality of PC vertical in the vertical direction The cutting unit 1 may be connected to form the pier 100. That is, the pier 100 may be divided into a plurality of sections in the vertical direction.

8 and 9 show an exploded perspective view and an assembled perspective view corresponding to FIGS. 1 and 2, respectively, in which the pier 100 is divided into two sections in the vertical direction.

As shown in the figure, in the vertical cut-away pier according to the present invention, the pier 100 may be divided into a plurality of sections in the vertical direction. For convenience of description, positioned below the vertical direction in the piers 100 divided into a plurality of sections is referred to as a "lower piers", and it is named "upper piers" to be placed thereon and coupled. Particularly located at the bottom and coupled with the base 300 is referred to as the "bottom pier".

As described above, the upper pier and the lower pier are each made of a combination of two PC vertical cutting units (1), and the upper pier and the lower pier are continuously integrally coupled in the vertical direction. To this end, the connecting body 40 may be used. 10 and 11 show schematic perspective views of one embodiment of the linker 40, respectively. 10 is a perspective view showing the upper surface of the connector 40 to be seen from above, and FIG. 11 is a perspective view showing the upper surface of the connector 40 to be turned upside down.

As shown in the drawing, the connection body 40 has a predetermined thickness in the vertical direction, and has an outer surface corresponding to the end faces of the upper and lower ends of the pier 100, and therein in the hollow of the pier 100 It consists of a ring-shaped member in which the connection hollow portion 41 in communication with the hollow is formed at a corresponding position. The upper and lower surfaces of the connecting body 40 are formed with a main reinforcing bar insertion hole 42 into which the main reinforcing bars 11 provided at each of the upper and lower piers are inserted.

The connecting body 40 is disposed between the upper pier and the lower pier to connect the upper pier and the lower pier integrally with each other, the main reinforcing bar 11 protruding out of the upper surface of the two PC vertical incision unit constituting the lower pier ) Is inserted into the main reinforcing bar insertion hole 42 formed on the lower surface of the connecting body 40, and the lower end of the main reinforcing bar 11 protruding out of the lower surface of the two PC vertical cutting units forming the upper pier is connected to the connecting body. 40 is inserted into the main reinforcing bar insertion hole 42 formed on the upper surface. Known rebar couplers are built into the main reinforcing hole 42 so that the end portions of the main reinforcing bars inserted into the main reinforcing rod insertion holes 42 are connected to the reinforcing bar coupler to be continuous with each other in the vertical direction. The main reinforcing bar insertion hole 42 is filled with a finishing material such as non-contraction mortar in a state in which the main reinforcing bar portion and the main reinforcing part of the lower pier are continuous by the reinforcing bar coupler. Configuration for filling the finishing material in the reinforcing bar insertion hole 42, that is, the injection hole for the finishing material is injected, the finishing material discharge hole to confirm the filling of the finishing material, and the hole for forming such a cast iron insertion hole and the finishing material injection hole and the finishing material discharge hole For example, the forming tool may use the contents described above with reference to FIG. 6 as it is.

The concave and convex portions 44 are formed on the upper and lower surfaces of the connecting body 40, respectively, and the concave and convex portions are also engaged with the concave and convex portions 44 on the upper and lower portions of the connecting body 40 and the end surfaces of the upper and lower portions of the lower pier. It is also possible to form a part so that additional mechanical coupling can be made. On the outer side surface of the connecting body 40, a sealing material 29 for filling and preventing leakage at the joint surface where the two PC vertical cutting units 1 are joined to each other is continuous with the pier part above and below. Sealing material filling recess 47 may be formed to be filled.

As shown in the figure, the two PC vertical incision unit is assembled by connecting the base portion to form the lower piers, and the connecting body 40 is disposed on the lower piers, the main reinforcement of the lower piers in the above manner Inserted into the main reinforcing bar insertion hole 42 of the connecting body 40, and subsequently assembled another two PC vertical cutting unit on the connecting body 40 to form another pier, the main reinforcing bar of the pier It is to be inserted into the cast iron insertion hole 42 formed on the upper surface of the connecting body (40). When the main reinforcing bars are continuous with each other in the connecting body 40, the finishing material is injected into the main reinforcing bar insertion hole 42.

When the plurality of divided piers are continuously installed in this way, the filling filler is filled in the hollow to communicate with each other so that the divided piers are integrated. Of course, the coupling filler may be filled in the process of connecting the divided piers in turn, and after the entire piers are installed at the height of the entire piers 100, the coupling fillers may be filled in the entire height of the piers 100. You can also

In addition, although not shown in the drawings, when installing the hollow reinforcing bar 30 in the hollow of the pier 100, the hollow reinforcing bar 30 is disposed between the pier adjacent to each other and between It may be disposed in the hollow over the connecting body 40.

8 and 9 illustrate that the bridge parts are connected to each other using the connecting body 40, but the main reinforcing bar insertion hole is formed at the bottom of the upper pier without forming the connecting body 40. By inserting directly into the main reinforcing rod insertion hole of the upper pier of the lower pier may be connected to the upper and lower pier.

In addition, when connecting the pier and the coping portion as shown in the embodiment shown in FIGS. 1 and 2 above, the main reinforcing bar upper portion of the pier may be inserted directly to the bottom of the coping portion, as described above, between the pier and the coping portion The connecting body may be installed and the pier part and the coping part may be connected using the connecting body.

As described above, in the present invention, the pier is constructed by assembling the vertically cut PC vertical cutting unit (1). Therefore, as compared with the conventional prefabricated piers that are stacked and assembled in plural numbers, there is no need to arrange the tension members in the vertical direction and introduce tension forces, thereby reducing costs and the like.

Particularly, since the pier part of the present invention is composed of one PC vertical cutting unit extending long over the entire vertical height in the vertical direction or in the form of a small number of continuous parts, the pier has great rigidity against bending moments due to lateral load. It has the structural advantages it has.

100: piers
200: coping part
300: foundation

Claims (6)

delete As a pier consisting of a columnar pier 100 is installed vertically, and the coping unit 200 is formed on the upper end of the pier 100,
The pier part 100 is formed by being vertically cut by the vertical incision surface passing through the vertical center line of the pier and assembled in the transverse direction facing the PC vertical incision unit 1 of equally divided shape;
The PC vertical cutting unit (1) has a concave portion (10) formed on the inner surface facing each other;
A main reinforcing bar (11) is disposed in the vertical direction in the PC vertical cutting unit (1), wherein upper and lower ends of the main reinforcing bar (11) are further extended to protrude out of the PC vertical cutting unit (1);
The outer surface of the concave portion 10 is provided with a protruding bonding member 20 protrudes, when the pair of PC vertical cutting unit 1 is coupled to face each other in the horizontal direction, the concave portion 10 is The hollows are formed in the vertical direction inside the pier part 100 while being closed to face each other;
In the state where the protruding coupling member 20 is located in the hollow, the coupling filler 110 is filled in the hollow, so that a pair of PC vertical cutting units 1 which are divided in the transverse direction are coupled to the pier 100. Is formed;
The coping part 200 is made of precast concrete;
On the lower surface of the portion where the coping part 200 is connected to the pier part 100, the reinforcing hole 220 is formed concave inside;
Filling material injection hole 210 is formed in the coping portion 200 in communication with the reinforcing rod insertion hole 220;
When the coping part 200 is installed on the upper part of the pier part 100, the hollow part reinforcing bar is disposed over the hollow of the pier part 100 and the reinforcing hole 220 of the coping part 200 ( 30) is disposed;
The coupling filler 110 is injected through the filler injection hole 210 so that the coupling filler 110 is filled in communication with the hollow of the pier 100 and the reinforcing hole 220 of the coping part 200. Vertical hollow cut-away pier, characterized in that the hollow reinforcement reinforcing bar 30 is embedded.
The method of claim 2,
A coping part insertion hole 120 is formed at a lower surface of the coping part 200 in the direction of the pier part 100 to insert an upper end of the cast reinforcing bar 11 protruding to an upper end of the pier part 100;
A rebar coupler 155 is embedded in the coping portion insertion hole 120;
When the coping part 200 is placed on the upper part of the pier 100, the main reinforcing bar 11 of the PC vertical cutting unit 1 is inserted into the coping part insertion hole 120 is fastened to the reinforcing coupler 155, the coping part Vertically cut prefabricated piers, characterized in that the 200 and the pier 100 is connected to each other by a cast reinforcing bar (11) to be integrated.
The method according to claim 2 or 3,
The piers 100 are divided into a plurality of sections in the vertical direction, each divided section consisting of a pair of PC vertical cutting units (1);
The connecting body 40 is disposed between the adjacent piers in the vertical direction, and the connecting body 40 has a thickness in the vertical direction and corresponds to the end faces of the upper and lower ends of the piers 100. A ring-shaped member having an outer surface and having a connecting hollow portion 41 formed therein in communication with the hollow of the pier 100 at a position corresponding to the hollow of the pier 100;
The upper and lower surfaces of the connecting body 40 are formed with a main reinforcing bar insertion hole 42 into which the main reinforcing bars 11 are provided, respectively, which are provided at each of the piers connected up and down;
The reinforcing bar insertion hole 42 is provided with a rebar coupler, and is provided in the PC vertical cutting unit 1 of the pier leading to the upper and lower surfaces of the connecting body 40 and the upper and lower ends of the main reinforcing bars 11 protruding to the outer surface. Are respectively inserted into the main reinforcing bar insertion holes 42 formed in the connecting body 40 so as to be continuous with each other in the vertical direction by the reinforcing bar coupler;
The finishing material is injected into the main reinforcing bar insertion hole 42 in a state where the main reinforcing bars 11 are connected to each other in the connecting body 40;
Vertically of the pier 100 by the hollow structure of the bridge connected to the upper and lower parts of the connecting body 40 and the coupling filler 110 is filled in communication with the connection hollow portion 41 of the connecting body 40. Vertically cut prefabricated piers, characterized in that the plurality of sections divided in the direction are integrally connected.
5. The method of claim 4,
The hollow reinforcing bar 30 is disposed over the hollow of the bridge portion connected to the upper and lower portions of the connecting body 40 and the connecting hollow portion 41 of the connecting body 40 to be embedded in the coupling filler 110. Vertically cut prefabricated piers characterized in that.
As a method of constructing a piers by installing columnar piers 100 vertically and installing a coping unit 200 on an upper end of the piers 100,
The inverted portion 10 is formed on the inner surface of the column-shaped pier part 100 vertically cut by the vertical incision surface passing through the vertical center line of the pier to have an evenly divided shape, but face each other. The main reinforcing bar 11 is disposed in a vertical direction, and the upper and lower ends of the main reinforcing bar 11 protrude further to the outside, and the protruding coupling member 20 protrudes to the outer surface of the concave part 10. A PC vertical cutting unit 1 having a structure made of precast concrete member;
Transfer the manufactured PC vertical cutting unit 1 to the site, and a pair of PC vertical cutting units 1 face each other in the lateral direction such that the recesses 10 face each other;
When the pair of PC vertical cutting units 1 face each other in the lateral direction, the concave portions 10 face each other and are closed and protrude in a hollow formed in a direction perpendicular to the inside of the pier 100. A pair of PC vertical cutting units (1) that are divided by filling the filler filler material (110) in the hollow in the state in which the binder material (20) is positioned to form a pier (100);
The coping part 200 is made of precast concrete, so that the reinforcing hole 220 is formed concave inside the lower surface of the portion where the coping part 200 is connected to the pier 100, the Manufacturing the coping part 200 to form a filler injection hole 210 communicating with the reinforcing hole 220;
The coping part 200 is installed on an upper portion of the pier part 100, and the hollow part reinforcing bars are disposed over the hollow of the pier part 100 and the reinforcing hole 220 of the coping part 200 ( 30 is placed, and the filling filler 110 is injected through the filler injection hole 210, the hollow of the pier 100 and the reinforcing hole 220 of the coping part 200 is in communication with the filling The construction method of the vertically cut prefabricated piers, characterized in that the coping portion 200 is installed on the upper portion of the pier 100 so that the hollow reinforcing reinforcing bar 30 is embedded in the coupling filler (110).

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