KR101994039B1 - Finger joint prevention of escape - Google Patents

Abstract

The present invention relates to a finger joint for preventing separation, and more specifically, to a finger joint for preventing separation, which forms a mounting groove and a fixing groove on an upper portion and a lower portion of first and second finger joints installed in an upper plate slab, allows a coupling unit of a coupling member to adhere to the mounting groove to prevent a coupling protrusion coupled to the fixing groove from being separated to the outside, wherein the coupling member can prevent car accidents caused by a damage to a vehicle wheel by lifting one of the first and second finger joints to an upper portion of the upper plate slab by loosing a nut fixing the first and second finger joint installed in the upper plate slab or cutting an anchor bolt in advance.

Description

[0001] Finger joint prevention of escape [0002]

More particularly, the present invention relates to a finger joint for preventing separation, and more particularly, to a finger joint for preventing separation, which comprises a seating groove and a fixing groove formed at an upper portion and a lower portion of first and second finger joints provided inside a top plate slab, And the coupling member prevents the detachment of the first and second finger joints, which are provided inside the upper plate slab, due to the loosening of the nut and the cutting of the anchor bolts, The present invention relates to a finger joint for preventing dislocation, which can prevent a traffic accident due to breakage of a vehicle wheel due to one of finger joints being lifted to the upper portion of a slab of a top plate.

Generally, the upper and the lower structures of the bridge are provided with expansion joints (finger joints) for absorbing deformation of the structure such as temperature change, drying shrinkage, creep, etc. The above- Let the vehicle run smoothly.

The expansion joint device supports a moving load of a vehicle or the like while accommodating expansion and contraction caused by concrete of the bridge top plate and prevents rainwater or foreign matter from falling through a gap of the expansion joint device to thereby pollute and erode the bridge lower structure Function.

Since the expansion joint device is directly contacted with a moving vehicle on a bridge top plate and breakage and replacement thereof frequently occur, excellent performance is required and it is a component that has a significant influence on the durability and safety of the bridge structure and the lower structure.

Therefore, expansion joints should be easy to expand and shrink, and to prevent foreign objects from falling down the bridge. Durability and supporting force must be ensured so as not to be damaged by moving the vehicle. Simplified expansion joints to enable quick construction when replacing due to breakage Should be.

The expansion joints used in the bridges are rail type, finger type, mono cell type and the like, and the expansion joints are divided into a drain type and a non-drain type, Type U-shaped waterproof material is installed on the lower part of the expansion joint to collect water from the U-shaped waterproofing material. In the non-expansion type, a porous waterproof seal is installed under the expansion joint, It is a method of drainage processing.

The expansion joints installed on the bridges are used to prevent the filling failure and cracks in concrete installation, the concrete damage caused by the overloaded vehicles, the loosening of the nut fixing the expansion joint device to the external impact and the cutting of the anchor bolts, There is a risk that the risk of traffic accident is always present because the wheels of the vehicle are damaged by lifting up the slab of the upper plate.

The base plate 110, which is composed of the first and second joint members 100 and 200, is connected to the first joint member 100 and the second joint member 100, An insertion groove (116) formed on at least one of both side surfaces of the finger joint (112); And at least one protrusion (216) protruding from at least one side of both side surfaces of the finger joint (212) of the second joint member (200) and inserted into the insertion groove (116) It is possible to minimize the noise and impact due to the gap between the two upper plates when the vehicle passes through while minimizing the noise and impact caused by the gap between the upper and lower plates, The present invention relates to an expansion joint of a telescopic joint for a bridge, which prevents the joint from easily falling off from the upper plate and prevents the telescopic joint from being easily thrown out by the driving force generated when the vehicle passes through. There is no unfinished invention.

Generally, the finger joints are formed to have a thickness of 5 cm. In order to form the insertion grooves and the protrusions in the first and second joint members, the overall thickness of the finger joints must be made thicker. , The depth of crushing of the concrete of the slab of the upper panel is changed, so that it takes a long time to work, the difficulty of the processing technique for keeping the thickness of the insertion groove of the first joint member at a constant level, 2 When the protrusion of the joint member causes an error of 1 mm or when the thickness of the insertion groove is narrower than the thickness of the protrusion and when the thickness of the protrusion is made larger than the thickness of the insertion groove, And the finger joints installed on the bridges are installed so as to have flexibility. As shown in FIG. 1 related to the prior art of Patent Document 1, a clearance is formed between the finger joint 2 and the groove 4 to move up and down the finger joint, And the members are prevented from interfering with each other due to the play in upward and downward movement in the longitudinal direction. However, in the case of Patent Document 1, the insertion grooves and the protrusions do not form a clearance, There is a problem that the projections are broken, the functions of the first and second joint members are lost, and the anchor bolts are broken due to the loads transmitted to the first and second joint members.

Further, the upper plate of the bridge is provided with different bottom surfaces of the first joint member and the second join member according to the portion through which the vehicle passes. In the first and second joint members of Patent Document 1, If the horizontal state of the bottom surface is uneven, if any one of the projecting portions and the insertion grooves of the first and second joint members has a problem in connection, it can not be used at the worksite, and the problem that the first joint member, The joint itself can not be made even if one of the protrusions of the member is erroneous, and in particular, it is difficult to join the first joint member and the second joint member at the work site, thereby causing traffic congestion And it is inconvenient for traffic passage. Also, the cost of re-installation due to defective coupling of the expansion joint device and the difficulty of maintenance work, There is a problem that the excessively exceeded.

Patent Document 2 relates to a joint type slip-off preventing finger joint of a bridge top plate of Registration Practical Utility Model No. 20-256866. In the joint of a bridge top plate, the bridge top plate (50) (80) Type detachment finger joint 60 is installed on the rear side of the finger joint body 1, 2 (70), 90, and the joint anchor (not shown) Shrinkage concrete padding 52 is inserted and coupled with the connecting reinforcing bars 54 connected to the bridge joint member 74. The slip-type detaching finger joint 60 includes a finger joint body 1 And the finger joint body 2 90 is provided on the other side of the bridge top plate. The slip-type detachment finger joint 60 includes a finger joint body 2 90) are closely adhered to prevent upward / downward deviation and left / right deviation While the U-shaped slip fingers 78 are integrally formed on the finger joint body 1 of the slip-type separation preventing finger joint 60 at the same height as the plurality of finger joint body 1 70, Each of the U-shaped slip fingers 78 is formed in a state in which a predetermined gap is maintained, and the U-shaped slip fingers 78 of the finger joint body 1 70 are provided with slip holes 76 And a connecting type fingering 94 is formed on the finger joint body 2 90 of the slip type separation preventing finger joint 60. The connecting type fingering 94 is formed on the finger joint body 2 Shaped cross-section is formed integrally at the same height as the finger joint body 2 (90), and the '+' shaped cross-section is formed at a constant interval so as to protrude from the intermediate portion of the bridge top plate 90 Prevention fingers joint is installed on the joint of the bridge top plate, This work will provide an excellent earthquake or deluge when the seam of the bridge deck joint is not configured to prevent separation of the bridge deck Slip departure prevention finger joints due to natural disasters.

In the case of Patent Document 2, the finger joints generally have a thickness of 5 cm. In order to form the connecting-type fingers of the body 2 in the slip hole of the body 1, the overall thickness of the finger joints must be three times or more thicker than a general finger joint, The thicker the thickness, the more the manufacturing cost is excessively increased and the depth of crushing the concrete of the slab of the upper slab is changed, so that the working time is long. In the case of Patent Document 1 and Patent Document 2, The difficulty of using a separate equipment due to the difficulty of the operator carrying the finger joint at the work site and the finger joint installed in the bridge are installed to have flexibility, 1, which is related to the prior art of FIG. 1, between the finger joint 2 and the groove 4, So that the members do not interfere with each other due to the upward and downward movements acting on the body 1 and the body 2 located in the lateral direction of the vehicle and the clearance during the upward and downward movements acting in the longitudinal direction, In the case of Document 2, there is a problem in that no clearance is formed in the connection type fingering and the slip grooves, so that the interference occurs directly in the connection type fingers and the slip fingers are damaged, Since the size of the joint anchor supporting the bodies 1 and 2 is small, the bodies 1 and 2 can not be supported and the bodies 1 and 2 are entirely excited.

Further, in the bodies 1 and 2 of Patent Document 2, the joint anchor is integrally formed and inserted into the inside of the upper plate slab, and the connecting reinforcing bar is inserted into the interior of the joint anchor in the longitudinal direction. Since it is not a separate structure but a long extension, it is difficult to install a long reinforcing bar in the longitudinal direction. In the case of a joint anchor, since the inside is inclined and the reinforcing bar can not be supported, The height of the bottom surface of the body 1 and the height of the bottom surface of the body 2 are set differently according to the portion where the vehicle passes, The body 1 and the body 2 may have different heights of the bottom surfaces, It is not possible to use it in the field of work because it can not be combined with the slip hole and the rejection, and since the joint anchor can not be kept fixed, there are many difficulties in uniformly connecting the bodies 1 and 2 connected in the longitudinal direction, When the position of the body 1 or the body 2 is changed in the process of pouring the concrete into the anchor, the finger joint installed in the longitudinal direction of the body 1, 2 repairs the entire operation, causing a traffic jam during the construction period, In case of incomplete filling and cracking and damage to concrete caused by overloaded vehicle, it is necessary to perform maintenance work. When the joint anchor is formed integrally on the body 1 and 2, The construction cost is excessively exceeded due to the difficulty of maintenance work for shredding the government and local governments. There is a problem in that the economical losses to below.

Patent Document 3 discloses a regenerative joint structure for preventing fallout of a bridge top plate of a registraion utility model No. 20-256846, in which a non-shrinkage concrete is installed on one side of a bridge top plate and a stretch joint is installed on the non- (54) and (84) are provided on the side of the shrink-free concrete (52), and the steel frame fingers (1, 2) (54) The connecting member 100 is inserted between the connecting portions 84 and the connecting member 100 is formed at the center of the stencil rosette anchor 96 and the elastic rubber 98 is applied to the outer circumferential surface thereof, The steel finger frame 1 54 and the steel finger frame 2 84 are opposed to the expansion and contraction of the bridge top plate due to the seasonal change by the above elastic rubber 96 and the steel rod frame anchor 98 The steel finger frame 1 (54) and the steel finger frame 2 (84) are rigidly supported, The steel finger frame 1 54 is provided with a joint anchor 1 58 on the rear side of the steel body frame 1 56 and a plurality of projections 1 60 on the front side of the steel body frame 1 56 And the insertion hole 1 62 is formed in the center of the protrusion 1 60 in the height direction while the steel finger frame 2 84 is provided at the rear of the steel body frame 2 86 And a plurality of protrusions 2 90 are formed on the front of the steel body frame 2 86. The protrusions 2 90 are formed with insert holes 2 (92) are formed on the upper surface of the bridge top plate.

In the case of Patent Document 3, similarly to Patent Document 2, the finger joint is generally formed to have a thickness of 5 cm. In order to form the protrusions 1 and 2 on the steel finger frames 1 and 2, The thickness of the slab is required to be thick and the manufacturing cost is excessively increased as the thickness of the slab becomes thicker. In addition, It is difficult to mount it on a vehicle to be transported, the difficulty of carrying the finger joint at the work site, the problem of using a separate equipment, and the finger joint installed in the bridge are installed to have flexibility. As shown in Fig. 1 related to the prior art of Patent Document 1, there is a gap between the finger joint 2 and the groove 4, So as to prevent the interference of the members due to the upward and downward movements acting on the steel finger frame 1 and the steel finger frame 2 located in the lateral direction in which the vehicle travels and the clearance in the upward and downward movements acting in the longitudinal direction However, in the case of Patent Document 3, there is a problem that no protrusion is formed on the protrusion 1 and the protrusion 2, so that interference occurs directly on the stainless steel square anchor and the stainless steel square steel anchor is broken, and the steel steel finger frame 1 and the steel finger frame 2 Since the size of the joint anchors 1 and 2 supporting the steel finger frame 1 and the steel finger frame 2 is small, the steel finger frame 1 and the steel finger frame 2 can not be supported. There is an entirely exciting problem.

In the steel material fingers 1 and 2 of Patent Document 3, the anchors 1 and 2 are integrally formed and inserted into the slab of the upper plate, and the binding steel bars are inserted into the anchors 1 and 2 in the longitudinal direction. Since it is not a separate structure like frame 1 and 2 but is elongated, it is difficult to install it in the longitudinal direction. In the case of anchors 1 and 2, since the inside is inclined and can not support the reinforcing steel bar, It is troublesome to additionally perform a separate operation of placing concrete in a state in which the reinforcing bars are caught or fixing the reinforcing bars and that the top plate of the bridge is formed by the steel frame 1 and the bottom surface of the steel frame 2 The height of the steel fingers 1 and 2 of Patent Document 3 is different from that of the bottom surface. If the height of the bottom surface is not uniform, It is not possible to use the elastic rubber and the stencil anchor in the worksite because it can not be used in the worksite and the anchors 1 and 2 can not be kept fixed, When the position of the steel finger frame 1 or the steel finger frame 2 is changed in the process of pouring the concrete into the anchors 1 and 2, In addition, insertion holes 1 and 2 are formed in the protruding portions 1 and 2 of the steel material finger molds 1 and 2, Since it has the same thickness as the holes 1 and 2, it is difficult to connect the elastic rubber made of a rubber material to the insertion holes 1 and 2 in the longitudinal direction, and a stencil anchor is installed inside the elastic rubber As shown in FIG. 3, since the stencil anchors are not separated from each other as in the case of the steel material fingers 1 and 2, they are elongated in the longitudinal direction so that the insertion holes 1 and 2 of the steel material fingers 1 and 2 It is inconvenient for the traffic to pass through because of the traffic jam while the construction period is prolonged due to the difficulty of installing the stun rectangle anchor in the longitudinal direction by inserting the long anchor in the longitudinal direction, Repair work should be carried out in case of occurrence of defects and cracks and breakage of concrete caused by overloaded vehicles. In the steel material finger molds 1 and 2, the anchors 1 and 2 are integrally formed and the maintenance work for crushing the entire concrete in which the anchor is located There is a problem that the construction cost is excessively exceeded due to difficulty, resulting in an economic loss which causes waste of the budget of the government or the local government .

As described above, Patent Documents 1 to 3 are uncompleted inventions that can not be practically practiced on a work site, since they are simple ideas that ignore clearance designs that are necessarily applied at work sites.

Korean Patent No. 10-1688117 Korean Utility Model Registration No. 20-256866 Korean Utility Model Registration No. 20-256846

It is an object of the present invention to improve the structure of the first and second finger joints and the coupling member so that it is easy to manufacture and move, And to shorten the construction period by moving the finger joint.

It is a further object of the present invention to provide a method of manufacturing a finger joint, which comprises forming a seating groove and a fixing groove in the upper and lower corner portions of the first and second finger joints and fixing the coupling portion of the coupling member to the seating groove, One of the first and second finger joints is lifted up to the upper portion of the upper plate slab due to the loosening of the nut fixing the first and second finger joints provided inside the upper plate slab and the cutting of the anchor bolts And to provide a disengagement prevention finger joint that can prevent a traffic accident caused by breakage of a vehicle wheel in advance.

It is a further object of the present invention to provide a method of manufacturing a slab which is capable of preventing the concrete slab from being damaged or being damaged by an external impact when any one of the first and second finger joints is lifted up to the upper side, And the second lane is to prevent the phenomenon that the coupling portion is twisted, and to maintain the state where the coupling lug is tightly adhered to the seating groove.

It is a further object of the present invention to provide a method and an apparatus for constructing a concrete structure in which the expansion and contraction of concrete and shaking or flow due to the dynamic load of the vehicle occur in the first and second finger joints located in the lateral direction, The first and second finger joints can be separated from each other in the course of shaking and flow in the longitudinal direction by using a coupling member, and a flow space is formed in the fixing groove of the first and second finger joints, To prevent a phenomenon in which the finger is twisted.

It is a further object of the present invention to provide an apparatus and a method in which the fixing grooves formed in the seating grooves of the first and second finger joints and the coupling protrusions are formed to have a structure ' And to prevent separation of the finger joint.

Another object of the present invention is to improve the structure of the first and second finger joints and the coupling member to reduce the manufacturing cost and to provide the first and second finger joints positioned in the lateral direction Movement of the first and second finger joints in the vertical direction prevents the interference between the protrusions and the insertion grooves due to the flow space during the upward and downward movements in the vertical direction and the height of the bottom surfaces of the first and second finger joints is different A finger joint for preventing dislocation of the first and second finger joints and the first and second finger joints and the first and second finger joints, .

According to an aspect of the present invention, there is provided a disengagement prevention finger joint comprising a base plate and an anchor bolt embedded on both inner sides of a top plate slab installed on a bridge or an elevated road, Wherein the first and second finger joints are inserted into the protruding anchor bolts and are fixed by a nut, and the first and second finger joints are continuously installed in the longitudinal direction, A plurality of bolt holes are formed in the two finger joints to fix the nut to the anchor bolts and the protrusions and the insertion grooves are continuously formed on the inner sides of the first and second finger joints so that the protrusions of the first and second finger joints, Wherein the first and second finger joints are formed with a seating groove in a vertical direction on the upper and lower corner portions of the first and second finger joints, And the engaging portion is formed by bending the end of the engaging projection of the engaging member so that the engaging portion is engaged with the engaging groove to engage with the engaging groove, Wherein the first and second finger joints are connected to each other in a longitudinal direction so that any one of the first finger joint and the second finger joint can be separated from the top plate slab Thereby preventing accidents that may occur in the upper portion.

The present invention is characterized in that the thickness of the fixing groove is formed to be larger than the thickness of the engaging projection, thereby preventing the engaging member from being damaged while having flexibility in the swinging motion or flow acting on the first and second finger joints.

According to the present invention as described above, it is possible to reduce manufacturing cost by improving the coupling structure of the first and second finger joints and the coupling member, to enable an operator to easily move at a work site, The installation work of connecting the first and second finger joints continuously in the longitudinal direction can be performed quickly by simply inserting the engaging projections of the engaging members into the fixing grooves after the first and second finger joints are installed, It is possible to solve the traffic congestion and to solve the inconvenience in traffic passage.

In the present invention, the engaging portion formed at the end of the engaging protrusion that engages with the fixing groove of the first and second finger joints is tightly fixed to the seating groove to prevent detachment of the engaging protrusion coupled to the fixing groove, If any one of the first and second finger joints is lifted up by the external impact, both side surfaces of the first and second finger joints are firmly supported by the upper and lower portions of the first and second finger joints, And the coupling protrusions can be twisted or broken when the first and second finger joints are supported by only the both sides of the coupling protrusions.

The present invention is characterized in that the elongation and contraction of concrete and shaking or flow caused by the dynamic load of the vehicle occur in the first and second finger joints located in the lateral direction in which the vehicle travels, The engagement of the first and second finger joints can be controlled by using a coupling member, and the coupling portion of the coupling member is brought into close contact with the bottom surface of the upper plate slab so that the coupling protrusion is spaced apart from the fixing groove So that the coupling protrusions in the flow space have flexibility in the flow of the first and second finger joints.

In the present invention, the fixing grooves formed in the seating grooves of the first and second finger joints and the engaging protrusions are integrally formed so as to have a structure '◁ ◁' in which two inverted triangles are combined, so that the first and second finger joints are separated in the longitudinal direction There is an effect to prevent.

The present invention is advantageous in that the structure of the first and second finger joints and the coupling member is improved to reduce the manufacturing cost, the effect of easy movement and handling of the work site, the effect of the first finger joint The finger and the insertion groove are prevented from being interfered by the up and down motions acting on the two finger joints and the clearance during the upward and downward motions acting in the longitudinal direction and at the same time, Even if the height of the floor surface is different or the horizontal state of the floor surface is uneven, the coupling protrusion is installed without being twisted, so that the installation work of the first and second finger joints and the connection work in the longitudinal direction are performed quickly, Thereby reducing the cost of construction.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a combined state of an expansion joint according to the present invention. FIG.
FIG. 2 is a perspective view showing a state where the expansion joint device of the present invention is separated. FIG.
3 is a partial cross-sectional view of an expansion joint according to the present invention.
4 is an exploded perspective view of another embodiment of the expansion joint of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 4, the present invention is characterized in that a bridge or an upper plate slab S installed on an elevated road is broken and a base plate P and an anchor bolt B are fixed to both inner sides of the upper slab S A bolt hole 12 formed in the first and second finger joints 10 and 11 is inserted into an anchor bolt B protruded to the upper portion of the base plate P and fixed with a nut N, The first and second finger joints 10 and 11 are continuously provided in the longitudinal direction and then the first and second finger joints 10 and 11 are connected using the coupling member 20.

The first and second finger joints 10 and 11 are formed in a plate shape and have a plurality of bolt holes 12 formed in the first and second finger joints 10 and 11 so as to be inserted into the anchor bolts B, The first and second finger joints 10 and 11 are installed on the left and right sides of the anchor bolt B in the lateral direction, The first and second finger joints 10 and 11 are continuously connected to each other in the longitudinal direction so that the entire construction work of the bridge or the elevated road is performed. Direction, as shown in FIG.

The protrusions 13 and the insertion grooves 14 are continuously formed on the inside of the first and second finger joints 10 and 11. The protrusions 13 of the first finger joint 10 are provided with a second finger joint The protrusions 13 of the second finger joint 11 are provided so as to be engaged with the insertion grooves 14 of the first finger joint 10 so that the two insertion grooves 13 of the second finger joint 11 are engaged with each other, The protrusions 13 of the first finger joint 10 and the insertion grooves 14 of the second finger joint 11 are separated from each other by a predetermined distance so as to have a clearance, And the protrusions 13 and the insertion grooves 14 of the first and second finger joints 10 and 11 can be formed in various shapes. For example, the protrusions 13 and the insertion grooves 14 may be formed as curved projections, It is possible to fabricate a protruding shape on the surface.

A seating groove 15 is formed in the upper and lower corner portions of the first and second finger joints 10 and 11 in a vertical direction. The seating groove 15 penetrates both the upper and lower edges, The fixing protrusions 22 of the engaging member 20 to be described later are inserted in the fixing grooves 16 and 15 of the fixing protrusions 15 so that the fixing protrusions 16 are moved in a direction A space 17 is formed to simplify the engagement of the engaging projections 22 and the engaging projections 22 to be described later are formed in the inside of the flow space 17 even when the first and second finger joints 10, So that the first and second finger joints 10 and 11 can be flexibly supported.

The engaging member 20 connecting the first and second finger joints 10 and 11 in the longitudinal direction is formed by bending the end portion of the engaging projection 22 engaging with the engaging groove 16, The engaging portion 21 prevents the engaging protrusion 22 coming into close contact with the seating groove 15 and engaging with the engaging groove 16 from coming off to the outside, The lower portion of the first and second finger joints 10 and 11 is in close contact with the bottom surface of the first and second finger joints 10 and 11 so that the upper and lower portions of the coupling protrusion 22, The first and second finger joints 10 and 11 are held by the coupling protrusions 22 in a flexible manner even when the first and second finger joints 10 and 11 swing or flow. (10) or the second finger joint (11) due to breakage of the concrete or external impact in a state where the first finger joint (11) is continuously connected in the longitudinal direction One of the first and second finger joints 10 and 11 is prevented from being lifted up to the upper portion of the slab S and when the first and second finger joints 10 and 11 are lifted higher than the height of the bridge, It is possible to prevent traffic accidents that may cause secondary car accidents and human accidents due to breakage.

FIG. 4 is a perspective view of a finger joint according to another embodiment of the present invention. FIG. 4 is a perspective view of a finger joint according to another embodiment of the present invention. The fixing groove 16 is formed on the inner side of the upper and lower edges of the fixing groove 16 and the fixing protrusion 22 of the fixing member 20 is coupled to the fixing groove 16, The protrusion 22 is formed to have a structure of combining two inverted triangles and the fixing groove 16 is formed to have a larger flow space 17 than the thickness of the coupling protrusion 22, And the coupling protrusions 22 are formed so that both side surfaces thereof are inclined from the inside to the outside so as to prevent the first and second finger joints 10 and 11 connected in the longitudinal direction from being separated There is a feature that can be.

The disengagement prevention finger joint according to the present invention constructed as above operates as follows.

The upper plate slab S is formed on the bridge or the elevated road and the bolt holes 12 of the first and second finger joints 10 and 11 are aligned with the anchor bolts B provided in the upper slab S And the first and second finger joints 10 and 11 are firmly fixed to the upper plate slab S when the nut N is fastened to the anchor bolt B, The two finger joints 10 and 11 perform an operation of continuously connecting the first and second finger joints 10 and 11 in the longitudinal direction when the work is started at either the upper or lower end of the bridge, The work time can be shortened as the weight of the first and second finger joints 10 and 11 provided on the upper plate slab S is reduced. On the other hand, as in Patent Documents 1 to 3, the entire thickness is made 2 to 3 times thick There is a problem that an accident occurs in the process of moving the worker because the worker can not easily move it, Even if the first and second joint members or bodies 1 and 2 are moved to the working position, the coupling protrusions 22 of the coupling member 20 can be easily removed The first and second finger joints 10 and 11 can be rapidly and continuously connected in the longitudinal direction only by engaging with the fixing grooves 16 of the first and second finger joints 10 and 11, Even if the upper or lower positions of the first and second finger joints 10 and 11 that are coupled to the anchor bolts B are slightly different from each other, 22) can be easily combined and flowed. Therefore, there is no need to correct the installation work of the first and second finger joints (10, 11) or to perform separate maintenance work, and the joint member (20) The engaging portion 21 is in contact with the seating groove 15, Which is located at the upper and lower portions of the engaging projection 22 while the lower portion of the engaging portion 21 is in close contact with the bottom surface of the engaging projection 22, The first and second finger joints 10 and 11 can be provided with flexibility by the operation of the joining member 20. When the operation of the joining member 20 is completed, .

Even if the vehicle is traveling in the lateral direction in which the first and second finger joints 10 and 11 are installed and the load of the vehicle is transmitted to the first and second finger joints 10 and 11, It is possible to prevent the first and second finger joints 10 and 11 from being lifted up by being firmly fixed to the fixing grooves 16 of the two finger joints 10 and 11, The first and second finger joints 10 and 11 can not move in the longitudinal direction of the first and second finger joints 10 and 11 at the same time as the vehicle shakes or flows in the lateral direction, Flexibility is imparted to the first and second finger joints 10 and 11 with the feature that the thickness of the fixing groove 16 of the first and second finger joints 10 and 11 is formed to be larger than the thickness of the coupling protrusion 22, The first and second finger joints 10 and 11 are continuously prevented from being lifted and thus the maintenance work of the first and second finger joints 10 and 11 is delayed, There are also features that can minimize risk.

The above-described disengagement prevention finger joint according to the present invention is not limited to the above-described embodiments, and any person skilled in the art can easily implement the invention without departing from the gist of the present invention, There is a technical spirit to the extent that anyone can make various changes.

10: first finger joint 11: second finger joint
12: bolt hole 13: projection
14: insertion groove 15: seat groove
16: fixing groove 17: floating space
20: engaging member 21: engaging portion
22: engaging projection B: anchor bolt
N: Nut P: Base plate
S: Slab of top plate

Claims (4)

A base plate and an anchor bolts are embedded in both inner side surfaces of a top plate slab installed on a bridge or a high-priced road, and first and second finger joints are inserted into an anchor bolt protruded to an upper portion of the base plate and fixed with a nut, A finger joint for preventing separation of two or more finger joints in a longitudinal direction,
A plurality of bolt holes 12 are formed in the first and second finger joints 10 and 11 so as to be inserted into the anchor bolts B to fix the nut N to the anchor bolts B, The protrusions 13 and the insertion grooves 14 are continuously formed on the inside of the first and second finger joints 10 and 11 so that the protrusions 13 of the first and second finger joints 10 and 11, The first and second finger joints 10 and 11 are provided with a seating groove 15 perpendicularly to the upper and lower corner portions of the first and second finger joints 10 and 11, And a flow space 17 is formed in the fixing groove 16. The flow space 17 is formed to be larger than the thickness of the engaging projection 22 of the engaging member 20 However,
The engaging portion 21 is formed by bending the end of the engaging projection 22 of the engaging member 20 downward to form the engaging portion 21. The engaging portion 21 is in close contact with the seating groove 15, The first and second finger joints 10 and 11 are connected to each other in the longitudinal direction continuously to prevent detachment of the coupling protrusion 22 by the external impact. Wherein one of the first finger joint (10) or the second finger joint (11) prevents an accident that the first finger joint (10) or the second finger joint (11) is lifted to the upper portion of the top plate slab (S). delete Anchor bolts are embedded in both inner side surfaces of a top plate slab installed on a bridge or an elevated road, and the first and second finger joints are inserted into the anchor bolts and fixed with a nut. Wherein the finger joint is provided with:
A plurality of bolt holes 12 are formed in the first and second finger joints 10 and 11 so as to be inserted into the anchor bolts B to fix the nut N to the anchor bolts B, The protrusions 13 and the insertion grooves 14 are continuously formed on the inside of the first and second finger joints 10 and 11 so that the protrusions 13 of the first and second finger joints 10 and 11, A fixing groove 16 is formed in the upper and lower portions of the first and second finger joints 10 and 11 so as to insert the coupling protrusion 22 of the coupling member 20, ,
The engaging projection 22 of the engaging member 20 forms an inclined surface with both upper and lower sides inclined with respect to the center and the engaging projection 22 is inserted into the engaging projection 22, The first and second finger joints 10 and 11 are prevented from being separated from each other and the engaging protrusion 22 is engaged with the first and second finger joints 10 and 11 And prevents any one of the first finger joint 10 or the second finger joint 11 from being lifted up to the upper portion of the upper plate slab S by an external impact while being continuously connected in the longitudinal direction To prevent dislocation. The connector according to claim 3, wherein the coupling protrusion (22) and the fixing groove are formed to have a structure of '▷' in which two inverted triangles are coupled, and the fixing groove (16) And a space (17) is formed in the outer peripheral surface of the finger joint.

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