KR102220544B1 - Bridge expansion joints with the improved installation and method thereof - Google Patents

Abstract

According to the present invention, in the non-joint expansion joint device, the movement block 10 for being seated and behaving where the upper one side of the abutment is partially removed; A vertical block 20 formed vertically at the end of the moving block 10; And an expansion joint block 100 consisting of a'b'-shaped coupling part 30 formed integrally by protruding reinforcing bars from the upper surface of the moving block 10 and one side wall of the vertical block 20, respectively, The joint reinforcement (R2) is bound between the coupling portion (30) of the expansion joint block (100) and the exposed reinforcement (R1) of the partially removed girder (G), and the installation workability is improved to be integrated by non-shrink mortar. A joint device is provided.

Description

Expansion joints with improved installation workability and construction methods thereof {Bridge expansion joints with the improved installation and method thereof}

The present invention relates to an expansion joint device with improved installation workability, and more particularly, the installation workability of a replacement joint device that has been replaced during replacement construction of a conventional expansion joint device such as a mechanical expansion joint device is improved, as well as on-site traffic congestion. It relates to an expansion joint device with improved installation workability that can be avoided and installed in the field.

In general, expansion joints for joint bridges are used for the purpose of smoothly accommodating expansion due to temperature change, expansion due to creep and drying contraction of concrete, and expansion and contraction due to girder deformation of live load. However, the expansion joint receives the wheel load repeatedly, and also receives the amplified impact load by forming a discontinuity between the upper structure of the bridge and the alternating structure. Accordingly, the expansion joint is directly exposed to the amplified impact load and is damaged several times during the life of the bridge.

In this regard, it should be replaced and installed not only considering the initial installation cost from the economic point of view, but also considering the frequency of damage and direct and indirect costs related to maintenance in case of damage. In particular, in addition to the function of absorbing new construction, it is being replaced and repaired by considering the discontinuous waterproof function and passage time limit.

Regarding the replacement of the expansion joint, the registration number 20-0184729 of the Utility Model Registration No. 20-0184729 consists of an upper support steel with an upper key, a lower and central support steel, an expansion rubber, an upper cover plate, a horizontal and inclined circular steel and a bolt fastening hole. The expansion joint repair method of the bridge with the expansion joint is to remove only the upper cover plate of the expansion joint without crushing the non-shrink concrete poured on both sides of the expansion joint, and then remove the damaged elastic rubber. A method of repairing an expansion joint device of a bridge in which the upper cover plate is installed with bolts after removing foreign substances from the joint device and then anticorrosive treatment of the expansion joint device is disclosed.

In addition, Korean Patent Application Laid-Open No. 10-2009-0098652 discloses an interchangeable buried type expansion joint for a bridge installed in an oil gap, which is a space between different slabs, in which both sides in the length direction are open and in the width direction. It is a rail structure in which an open part in a continuous shape is formed on one side in the longitudinal direction, and a hook-shaped fixing part that is bent upward in the direction of the oil gap is provided, and is symmetrical to each other on opposite sides of the different slabs, and each of which is buried installed. A pair of fixing frames and a hook-shaped fastening part that is bent downward in an outward direction at both ends in the width direction is provided in the form of a "U"-shaped cross section, and the fastening part is hooked and supported by the fixing part to be parallel with the fixing frame There is disclosed an expansion joint including a drainage plate that is installed to be floated in the oil gap in a state that is arranged in such a manner as to be arranged.

However, since these technologies do not disclose a method for rapid replacement construction, in order to solve this problem, Patent No. 1761476, as shown in FIG. 1, removes the pavement using a road cutter or a surface excavator. And then dismantling the expansion joint by crushing the concrete layer using a breaker; Installing leveling plates (16) (16) on both sides so that the same horizontal surface comes out after pouring the super fast-diameter mortar (15) on both bottom surfaces of the demolition expansion unit (14) from which the expansion joint is removed; A unit fiber-reinforced precast block precast made of reinforcing fibers and concrete to increase tensile strength and suppress cracks, having a unit size that can be accommodated in the demolition expansion unit 14 on the upper surface of the leveling plate (16) (16) (20) the step of placing the seat; Put the outer waterproof elastic sealing material 22, 22 in close contact with both ends of the unit fiber reinforced precast block 20 side in the width direction, and the outer waterproof elastic sealing material 22, 22 and the demolition expansion part ( 14) the step of filling the non-shrinkable concrete 30 in the empty space; a replacement construction method of the expansion joint of the bridge including. However, in the case of such a technology, it is possible to have time efficiency by constructing in the field by using a precast block, but there is a problem in that vehicles for all lanes must be controlled at the site because the crane work must be performed. In addition, it has limitations not only in the protection of the shift, but also in the new construction behavior.

Therefore, there is a need to develop a technology capable of solving these problems.

Accordingly, it is an object of the present invention to provide an expansion joint device with improved installation workability in the field in replacement of a mechanical expansion joint device.

In addition, another object of the present invention is to provide an expansion joint device capable of performing the expansion and contraction behavior more efficiently.

According to the present invention, in the non-joint expansion joint device, the movement block 10 for being seated and behaving where the upper one side of the abutment is partially removed; A vertical block 20 formed vertically at the end of the moving block 10; And an expansion joint block 100 consisting of a'b'-shaped coupling part 30 formed integrally by protruding reinforcing bars from the upper surface of the moving block 10 and one side wall of the vertical block 20, respectively, The joint reinforcement (R2) is bound between the coupling portion (30) of the expansion joint block (100) and the exposed reinforcement (R1) of the partially removed girder (G), and the installation workability is improved to be integrated by non-shrink mortar. A joint device is provided.

Here, the movement block 10 of the expansion joint block 100 is made of a flattened hexahedron so that the upper one side of the abutment is partially removed and moves, and the vertical block 20 is at the end of the movement block 10 It is made of a hexahedron formed vertically, and the coupling portion 30 is preferably exposed from the top surface of the moving block 10 and one side wall of the vertical block 20 to have a'a' shape in an integral form.

In addition, the expansion joint block 100 is made of a plurality of unit blocks, and it is preferable to further include a connecting member 40 and a connecting hole 50 for the unit blocks to behave integrally.

In addition, the connecting member 40 is preferably made of a first connecting member 40a made of a'∩'-shaped metal member for connecting and coupling adjacent vertical blocks 20 on the upper surface of the vertical block 20. .

In addition, it is preferable to further include a second connection member 40b made of a metal member having a'∩' shape for connecting and coupling the neighboring moving blocks 10 on the upper surface of the moving block 10.

In addition, the connection hole 50 is a first connection hole 50a consisting of a fastening hole for connecting and coupling adjacent vertical blocks 20 on the upper surface of the vertical block 20 in response to the connection member 40, and the behavior It is preferable that it is made of a second connection hole 50b made of a fastening hole for connecting and coupling the neighboring movement blocks 10 on the upper surface of the block 10.

In addition, it is preferable that the expansion joint block 100 (100〃) further includes a guide recess (110〃) and a convex portion (120〃) corresponding thereto on both sides.

In addition, it is preferable that the guide concave portion (110〃) and the guide convex portion (120〃) have a'rhombus'-shaped cross-section.

On the other hand, according to the present invention, in the non-joint expansion joint, the upper one side of the abutment is partially removed from the moving block 10 and the vertical block formed vertically at the end of the moving block 10 ( An expansion joint block housing (100H') surrounding the 20); It is provided with an expansion joint block (100') consisting of a'b'-shaped coupling part 30 formed integrally by protruding reinforcing bars from the upper surface of the moving block 10 and one side wall of the vertical block 20, respectively, Improved installation workability that is integrated by non-shrink mortar by binding the coupling reinforcing bar (R2) between the coupling portion 30 of the expansion joint block 100' and the exposed reinforcing bar (R1) of the partially removed girder (G). An expansion joint is provided.

Here, it is preferable that the expansion joint block housing 100H' is made of a synthetic resin material or an FRP resin material.

In addition, the expansion joint block 100' is an expansion joint block housing 100H' having an'L' shape, and a coupling part 30 exposed to the outside of an'L' shape of the expansion joint block housing 100H' , And it is preferably made of a mortar that is poured in the field with respect to the interior of the expansion joint block housing (100H').

In addition, it is preferable that the'L'-shaped expansion joint block housing 100H' includes an opening 110' through which mortar is injected at an uppermost portion, and a through-hole 120' for air through-hole in the lower block. .

In addition, the'L'-shaped expansion joint block housing (100H') has a communication hole (130') for binding the neighboring expansion joint block (100') through connection reinforcing bars (150') on both sides, It is preferable to further include a cover 140 ′ for preventing leakage of mortar with respect to one side of the communication hole 130 ′.

On the other hand, according to the present invention, the elastic joint device surrounding the vertical block 20 formed vertically at the end of the moving block 10 and the moving block 10 to be seated and behaved where the upper one side of the shift is partially removed. Expansion joint device including a block housing (100H') and a'b'-shaped coupling part 30 formed integrally by protruding reinforcing bars from the upper surface of the moving block 10 and one side wall of the vertical block 20, respectively An expansion joint device having a block 100 ′ with improved installation workability is provided.

Therefore, according to the present invention, the installation workability in the field is improved in the replacement construction of the mechanical expansion joint device, and the expansion behavior can be performed more efficiently.

1 is a schematic perspective view showing a bridge expansion joint device of a non-joint according to Patent No. 1761476.
2 is a schematic perspective view of an expansion joint block of an expansion joint with improved installation workability according to a first embodiment of the present invention.
3A and 3B are schematic schematic diagrams showing a construction procedure of an expansion joint device with improved installation workability according to a preferred embodiment of the present invention.
4 is a schematic perspective view of an expansion joint block having improved installation workability according to a second embodiment of the present invention.
5 is a schematic perspective view showing a process of assembling an expansion joint block with improved installation workability according to a second embodiment of the present invention
6 is a schematic perspective view of an expansion joint block with improved installation workability according to a third preferred embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the expansion joint device with improved installation workability according to a preferred embodiment of the present invention.

2 is a schematic perspective view of an expansion joint block of an expansion joint device with improved installation workability according to a first embodiment of the present invention, and FIGS. 3A and 3B are expansion joints with improved installation workability according to a preferred embodiment of the present invention. It is a schematic schematic diagram showing the construction sequence of the device.

As shown in Figures 2 and 3, according to the expansion joint block 100 with improved installation workability according to the first embodiment of the present invention, the behavior for being seated in a place where the upper one side of the shift is partially removed Block 10, a vertical block 20 formed vertically at the end of the moving block 10, and a reinforcing bar is formed integrally from the top surface of the moving block 10 and one side wall of the vertical block 20, respectively. It consists of a'a'-shaped coupling portion (30).

The movement block 10 of the expansion joint block 100 is made of a flattened hexahedron so that the upper one side of the abutment is partially removed and moves, and the vertical block 20 is vertically at the end of the movement block 10. It is made of a hexahedron to be formed, and the coupling portion 30 is exposed from the upper surface of the moving block 10 and one side wall of the vertical block 20, respectively, and has a'a' shape in an integral form. At this time, the expansion joint block 100 is preferably made of a precast block, and may be formed corresponding to the width of the bridge, but as shown in FIG. 2, it is more preferable to be made of unit blocks.

On the other hand, according to the expansion joint block having improved installation workability according to the first preferred embodiment of the present invention, as shown in FIG. 2, in order to integrally move the unit blocks in a state consisting of a plurality of unit blocks. A connection member 40 and a connection hole 50 are further provided.

The connecting member 40 includes a first connecting member 40a made of a metal member having a'∩' shape for connecting and coupling adjacent vertical blocks 20 on the upper surface of the vertical block 20, and a moving block 10 It consists of a second connection member 40b made of a metal member of a'∩' shape for connecting and coupling the neighboring moving blocks 10 on the upper surface of the.

The connection hole 50 is a first connection hole 50a formed of a fastening hole for connecting and coupling adjacent vertical blocks 20 on the upper surface of the vertical block 20 in response to the connection member 40, and the movement block ( It consists of a second connection hole (50b) made of a fastening hole for connecting and coupling the neighboring movement blocks 10 on the upper surface of 10).

As shown in Figure 3, the construction process of the expansion joint device with improved installation workability according to a preferred embodiment of the present invention is as follows.

First, the existing mechanical expansion joint 200 is removed from the shift (P) and the girder (G). At this time, when the mechanical expansion joint 200 is removed, the upper part of the abutment P is included in the exposed reinforcement (not shown) of the abutment P by a predetermined depth, preferably the depth of the girder (G). Remove, and planarize the removed position.

Meanwhile, the girder (G) is partially removed from one end of the girder (G) at a certain depth so that the reinforcing bar (R1) is partially exposed to one side of the girder (G). At this time, the side end portion of the partially removed girder G is formed with an extension GE extending to have a predetermined thickness d.

Thereafter, a sliding member 60 made of a stainless plate or a sliding member made of stainless is mounted on the flat surface PP of the flattened abutment P.

Thereafter, the moving block 10 of the expansion joint block 100 according to the first embodiment of the present invention is seated on the upper surface of the sliding member 60, and at this time, one side of the moving block 10 is a girder. It adheres closely to the outermost end of (G).

Then, in a state in which the coupling reinforcement (R2) is bound between the coupling portion 30 of the expansion joint block 100 and the exposed reinforcement (R1) of the girder (G), the non-shrinkable mortar 70 is cut off the girder ( G) and is placed on the top of the expansion joint block (100). On the other hand, a buffer member 80, preferably a sealant, is filled between the cut side wall P'of the shift P and the vertical block 20 opposite thereto.

As described above, according to the expansion joint device with improved installation workability according to a preferred embodiment of the present invention, the movement block 10 and the vertical block 20 formed so that the expansion joint block 100 has a'L' shape. In the state of having the movement block 10 and the vertical block 20, they are bound to the girder (G) cut in a state provided with a coupling part 30 formed in a'b' shape to form a formwork between them in the field. By combining without using it, not only can the field workability be improved more, but the structural rigidity and behavior can be further improved.

In addition, the expansion joint block 100 can further improve field construction by combining them to the connection hole 50 by the connection member 40 in a state consisting of a plurality of PC blocks. Partial control of the vehicle is possible.

According to the expansion joint block with improved installation workability according to a second preferred embodiment of the present invention, as shown in Figs. 4 and 5, an expansion joint block housing 100H of a'L' shape made of a synthetic resin material or an FRP resin material. '), a'L'-shaped externally exposed coupling part 30 of the expansion joint block housing 100H', and a mortar that is poured in the field with respect to the interior of the expansion joint block housing 100H'.

In the expansion joint block housing with improved installation workability according to a second exemplary embodiment of the present invention, the'L'-shaped expansion joint block housing 100H' has an uppermost opening 110' through which mortar is injected, and a lower portion. The block has a through hole 120 ′ for air through, and a connection reinforcing bar 150 ′ is penetrated on both sides, and a communication hole 130 ′ for binding neighboring expansion joint blocks 100 ′, and a communication hole 130 It consists of a cover 140' for preventing leakage of mortar on one side of').

As shown in Fig. 5, the assembly process of the expansion joint block with improved installation workability according to the second exemplary embodiment of the present invention is adjacent to the first expansion joint block 100a' in a state in which the first expansion joint block 100a' is positioned on one side. After communicating the connection reinforcing bar 150' passing through each connecting tube 130' of the second expansion joint block 100b', the second expansion joint as an arrow with respect to the first expansion joint block 100a' The block 100b' is brought into close contact. Likewise, after the connection reinforcing bar 150 ′ passing through each connecting tube 130 ′ of the third expansion joint block 100c ′ adjacent to the second expansion joint block 100b ′ is communicated, the second expansion joint device The third expansion joint block 100c' is in close contact with the block 100b' like an arrow.

Thereafter, mortar (M) is injected into the opening (110') of each expansion joint block (100'), and at this time, the air remaining in the'L'-shaped expansion joint block housing (100H') is passed through. To be discharged to study (120').

Therefore, according to the expansion joint device with improved installation workability according to the second exemplary embodiment of the present invention, workability can be improved by directly handling the expansion joint block housing 100H' at a lighter weight in the field. 150 ′) is integrated between the mortar M and the neighboring expansion joint block 100 ′ to further improve structural stability.

On the other hand, according to the expansion joint device with improved installation workability according to the third preferred embodiment of the present invention, unlike the expansion joint device block 100 according to the first embodiment, the expansion joint device block 100 instead of the connection member 40 〃) is further provided with a guide recess (110〃) and a convex portion (120〃) corresponding thereto in the shape of a'rhombus' on both sides.

According to the expansion joint device with improved installation workability according to a third preferred embodiment of the present invention, neighboring expansion joint blocks (100 〃) are guide concave portions (110 〃) and guide convex portions (120 〃) are each opposed to each other. Guide is inserted and combined.

As described above, according to the present invention, not only the workability in the field is improved, but also the structural stability is improved, and the stretch behavior can be improved.

G: Girder
P: shift
1O: movement block
20: vertical block
30: coupling part
40: connecting member
50: connector
60: sliding member
70: non-shrink mortar
80: buffer member
100, 100´, 100〃: expansion joint block
100H': expansion joint block housing
110': opening
120': Ministry of Public Relations
130': communication ball
140': cover
150': connection reinforcement

Claims (19)

delete delete In the jointless expansion joint,
A movement block 10 for being seated and behaving where the upper one side of the shift is partially removed;
A vertical block 20 formed vertically at the end of the moving block 10; And
It is provided with an expansion joint block 100 consisting of a'b'-shaped coupling part 30 formed integrally by protruding reinforcing bars from the upper surface of the moving block 10 and one side wall of the vertical block 20, respectively,
The coupling reinforcement (R2) is bound between the coupling portion (30) of the expansion joint block (100) and the exposed reinforcement (R1) of the partially removed girder (G) and integrated by non-shrink mortar,
The movement block 10 of the expansion joint block 100 is made of a flattened hexahedron so that the upper one side of the abutment is partially removed and moves, and the vertical block 20 is vertically at the end of the movement block 10. It is made of a hexahedron to be formed, and the coupling portion 30 is exposed from the top surface of the moving block 10 and one side wall of the vertical block 20, respectively, and has a'a' shape in an integral form,
The expansion joint block 100 is made of a plurality of unit blocks, and the installation workability is improved, characterized in that it further includes a connecting member 40 and a connecting hole 50 for the unit blocks to behave integrally. Expansion joint device. The method of claim 3, wherein the connecting member 40 is a first connecting member 40a made of a'∩'-shaped metal member for connecting and coupling adjacent vertical blocks 20 on the upper surface of the vertical block 20. Expansion joint device with improved installation workability, characterized in that made. According to claim 4, It characterized in that it further comprises a second connection member (40b) made of a'∩'-shaped metal member for connecting and coupling neighboring moving blocks (10) on the upper surface of the moving block (10). Expansion joint device with improved installation and workability. The first connection hole (50a) of claim 5, wherein the connection hole (50) is formed of a fastening hole for connecting and coupling adjacent vertical blocks (20) on the upper surface of the vertical block (20) corresponding to the connection member (40). ), and a second connection hole (50b) consisting of a fastening hole for connecting and coupling neighboring movement blocks (10) on the upper surface of the movement block (10). The expansion joint device according to claim 3, wherein the expansion joint block (100; 100 〃) further comprises a guide recess (110 〃) and a convex part (120 〃) corresponding thereto on both sides thereof. . [8] The expansion joint device according to claim 7, wherein the guide recess (110〃) and the guide convex portion (120〃) have a'rhombus'-shaped cross section. delete delete delete In the jointless expansion joint,
An expansion joint block housing (100H') surrounding the movement block 10 and a vertical block 20 formed vertically at the end of the movement block 10 to be seated and moved in the area where the upper one side of the shift is partially removed, and ;
It is provided with an expansion joint block (100') consisting of a'b'-shaped coupling part 30 formed integrally by protruding reinforcing bars from the upper surface of the moving block 10 and one side wall of the vertical block 20, respectively,
The coupling reinforcement (R2) is bound between the coupling portion (30) of the expansion joint block (100') and the exposed reinforcement (R1) of the partially removed girder (G) and integrated by non-shrink mortar,
The expansion joint block 100' includes an expansion joint block housing 100H' having an'L' shape, an externally exposed coupling part 30 having an'L' shape of the expansion joint block housing 100H', and It is made of mortar that is poured in the field with respect to the inside of the expansion joint block housing (100H'),
Installation characterized in that the'L'-shaped expansion joint block housing (100H') includes an opening (110') through which mortar is injected at an uppermost portion, and a through hole (120') for air through-hole in the lower block. Expansion joint with improved workability. The method of claim 12, wherein the'L'-shaped expansion joint block housing (100H') has connection reinforcing bars (150') penetrating through both sides of the communication hole (130) for binding neighboring expansion joint blocks (100'). '), and a cover 140' for preventing leakage of mortar with respect to one side of the communication hole 130'. delete delete An expansion joint block housing (100H') surrounding the movement block 10 and a vertical block 20 formed vertically at the end of the movement block 10 to be seated and moved in the area where the upper one side of the shift is partially removed, and , It is provided with an expansion joint block (100') including a'b'-shaped coupling part 30 formed integrally by protruding reinforcing bars from the top surface of the moving block 10 and one side wall of the vertical block 20, respectively. And
A first step of removing the existing mechanical expansion joint 200 from the shift (P) and the girder (G) so that the reinforcing bar is partially exposed from the girder (G);
A second step of flattening by removing an upper portion of the shift P;
A third step in which the sliding member 60 made of a stainless plate or a sliding member made of stainless is seated on the flat surface PP of the flattened abutment P;
A fourth step in which the moving block 10 of the expansion joint block housing 100H' is seated on the upper surface of the sliding member 60 so that one side of the moving block 10 is in close contact with the outermost end of the girder G;
In a state in which the coupling reinforcement (R2) is bound between the coupling portion (30) of the expansion joint block (100') and the exposed reinforcement (R1) of the girder (G), the non-shrink mortar (70) is cut off the girder (G ) And a fifth step of being placed on the top of the expansion joint block 100'; And
A buffer member 80 is filled between the cut side wall P'of the shift P and the vertical block 20 opposite thereto,
The expansion joint block housing (100H') is made of a'L' shape, and the uppermost portion includes an opening (110') through which mortar is injected, and a through-hole portion (120') for air through-hole in the lower block. The construction method of the expansion joint device with improved installation workability. The method of claim 16, wherein the'L'-shaped expansion joint block housing (100H') has connection reinforcing bars (150') penetrating through both sides of the communication hole (130) for binding neighboring expansion joint blocks (100'). '), and a cover 140' for preventing leakage of mortar with respect to one side of the communication hole 130'. The method of claim 17, wherein the fourth step passes through each connecting tube 130 ′ of the neighboring second expansion joint block 100 b ′ in a state in which the first expansion joint block 100 a ′ is positioned on one side. Characterized in that the mortar is injected into the opening 110 ′ in a state in which the second expansion joint block 100b ′ is in close contact with the first expansion joint block 100a ′ after communicating the connection reinforcing bar 150 ′. The construction method of the expansion joint with improved installation workability. delete

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