KR20000066218A - A mounting method and device consolidation expansion and contraction for onfood part of bridge - Google Patents

Abstract

PURPOSE: An expansion joint for sidewalk of a bridge joint and an installation method thereof are provided to build an expansion joint without giving a damage on a structure and with reliability, simple construction and low cost. CONSTITUTION: Concrete(110) is cut in certain depth to settle expansion joints(130) on both ends of the concrete. The concrete is broken to form incision units(11,112). For securing expansion property, a backup agent(a) is inserted to the gap of the concrete. Holes are punched on the incision units to install anchor bolts(120). A sealant(b) is coated for flatness and waterproof of the concrete. The anchor bolt is combined with an anchor nut(140) to settle the expansion joint. The space formed by the expansion joint, the anchor bolt and the anchor nut is filled with sealant(150). Thereby, an expansion joint is completely installed.

Description

Expansion joint for bridge side of bridge joint and installation method for it {A MOUNTING METHOD AND DEVICE CONSOLIDATION EXPANSION AND CONTRACTION FOR ONFOOD PART OF BRIDGE}

The present invention relates to an expansion joint device for the press section of the bridge joint and its installation method, and in particular, the expansion joint device for the press section of the bridge joint that can be constructed at a simple construction and low cost while providing the reliability of the expansion joint of the press section And an installation method thereof.

In general, the expansion joints installed on the bridges of the road have various performance conditions such as durability, elasticity, running ability, waterproofness, and absorbing shock and vibration during driving due to the increase of traffic volume, the size of the vehicle, and the acceleration of the running speed. in need.

In order to satisfy these conditions, various products have been developed, produced and constructed, and such efforts will continue.

However, these efforts have been limited to the roadway where the vehicle is driven and neglected in the sidewalk where people pass.

In case of existing bridges, expansion joints are not installed in the sidewalks or installed using anchors.In this case, corrosion and deterioration of the bridges due to flooding of rainwater, bleaching and cracking of concretes in bridges and bridges, and new soil and foreign materials It has been deposited on the joints and has caused a great deal of distraction.

1 and 3, the conventional expansion joint device has a rubber holder 12 whose cross section is U-shaped and has a circular groove formed in a longitudinal direction in the middle of the front, and several places at the bottom of the intermediate connection portion. The anchor plate 13 has a perforated stretch plate 5, the rubber 6 is inserted into the two rubber holder 12, and the anchor of a predetermined length that is screwed into the anchor hole 13 of the expansion plate 5 A bolt (7) and a spiral is formed therein and a butterfly-shaped protrusion protrudes 2 to 4 locations around the anchor bolt (7) and the anchor nut (9) embedded in the concrete (4) And a cover rod 11 that connects the anchor nut 9 and the anchor hole 13 of the expansion plate 5 to the outside of the anchor bolt 7.

It is preferable that the expansion plate 5 be made of an aluminum alloy.

4A to 4C, the installation process of the conventional expansion joint device is described. First, the opening portion 2 is formed by cutting the connection portion of the road or the bridge to a predetermined length and height.

After inserting the anchor bolt (7) in the anchor hole (13) of the expansion plate (5) constituting the expansion joint device and then screw the nut (10) from the top, at the lower periphery of the anchor bolt (7) After inserting the cabarot (11) to the lower part of the anchor bolt (7) by screwing the anchor nut (9) to the temporary coupling.

In addition, by mounting the flat plate 16 on the upper surface of the two sets of expansion plates (5) constituting the expansion joints are thus combined and welded several places (tag welding) to configure the installation set, the installation set is the opening (2) Mount the support (14) on both sides of the plate and align the height with the road surface.

Since the anchor nut (9) and the anchor bolt (7) to the outer periphery cabarot (11) to be buried up to a certain depth, the concrete (4) is poured into the opening (2) to fill.

Next, after the concrete is solidified, the plate 16 is removed and the nut 10 is removed to lift the expansion plate 5, and then the anchor bolt 7 is removed by removing.

In addition, the cover 17 is put on the upper surface of the kava rod 11, and the pavement is completed by the asphalt pavement (1).

Next, as shown in FIG. 2, a predetermined area of the asphalt 1 of the upper part of the opening 2 is cut, and a buffer tar 3 is finished between the expansion joint and the aspart 1 to finish.

Since the expansion joint is installed, the cover 17 is removed and the anchor bolt 7 is screwed into the cover rod 11 so that the lower end is firmly screwed into the anchor nut 9, and the anchor bolt 7 is installed. Insert the anchor hole 13 of the elastic plate 5 at the top of, and screwed with the nut 10 from above is completed.

After the installation of the expansion joint is completed, the installation is completed by filling rubber 6 or mortar in the U-shaped groove of the expansion joint.

Meanwhile, as shown in FIG. 5, it is also preferable to install the reinforcing reinforcing bars 15 around the anchor nut 9 in the configuration, and anchor the anchor bolt 7 before fastening the anchor bolt 7 to the anchor nut 9. More preferably, epoxy is injected into the nut 9 and the anchor bolt 7 is fastened.

Therefore, the expansion joint is formed of two expansion plates (5) so that each expansion plate (5) is installed at each end of the road connection, the rubber 6 between each expansion plate (5) absorbs the expansion While filling the gap of the seam, the rubber (6) is inserted into the rubber holder 12 of the two expansion and contraction plates (5) can be replaced from the outside even after installation.

In addition, the expansion plate (5) is supported by the anchor nut (9) through the anchor bolt (7), the anchor nut (9) is firmly with the peripheral concrete (4) because the protruding butterfly projections protrude To be combined.

In addition, when the expansion plate 5 is made of aluminum alloy, wear resistance and impact resistance are improved, and in particular, the riding comfort can be improved without impacting the occupant of the vehicle.

In addition, since all of the anchor nut 9 and a part of the outer cover bar 11 of the outer circumference of the anchor bolt 7 are embedded in the concrete 4 in the installed set state, the anchor bolt 9 is later anchored to the anchor nut 9 ( 7) The setting is accurate when re-fastening, the anchor nut (9) is firmly coupled with the concrete (4) does not require a separate reinforcing bar, the cushioning tar (5) between the expansion plate (5) and asphalt (1) 15) prevents the cracking of the asphalt 1.

In addition, the asphalt (1) is paved by cutting the appropriate portion and then installed expansion joints because the asphalt (1) of the corner is also firmly installed with enough compaction.

If the ground is weak due to road conditions or reinforcement is required, sufficient support strength can be obtained by increasing the protrusions of the anchor nut 9 or by welding and reinforcing the reinforcing bar 15 above and below the anchor nut 9. When the epoxy is injected into the anchor nut (9) and the bolt is inserted into the anchor bolt (7), the epoxy in the anchor nut hardens to tighten the bolt / nut, as well as tightening the nut at the bottom of the bolt and increasing the height. Will be maintained.

By the way, when the expansion joint configured in this way, if you want to install in addition to the sidewalk in the installation process of the anchor bolt (7) in order to insert the anchor nut 9, the asphalt and concrete must be broken more than 10-15cm construction Since this is possible there was a problem that can damage the structure.

In addition, after installing concrete in the assembled state in order to install the anchor bolt and the anchor nut, and then dismantled again, there was a problem in that the construction of repeatedly curing the hassle to install concrete repeatedly.

In addition, the conventional expansion joint device has a problem in that the installation cost is complicated in terms of the economical construction process.

Accordingly, the present invention has been made to solve the above problems, and can be installed at a low cost and simple construction and low-cost expansion joints for the bridge joints and its installation without damaging the structure The purpose is to provide a process.

1 is a configuration diagram of a conventional expansion joint device,

2 is a cross-sectional view along the line A-A showing an example of FIG.

3 is an enlarged view of a conventional anchor portion,

4a to 4c is a installation process of the conventional expansion joint device,

5 is a cross-sectional view showing another example of FIG. 1;

6 is a configuration diagram of the expansion joint according to the present invention,

7A to 7G are installation process diagrams using the expansion joint according to the present invention.

<Description of the code | symbol about the principal part of drawing>

a: backup agent 110: concrete

111,112: incision 120: anchor bolt

130: expansion joint member 131: steel sheet

140: anchor nut 150: sealant

The present invention for achieving the above object, in the expansion joint device installed in the sidewalk portion of the bridge, a certain length is planted on the bottom surface of the cutout formed in both concrete of the bridge to maintain a constant interval by the backup agent A plurality of anchor bolts installed to protrude to the upper portion, and the steel plate to be inserted and supported by the anchor bolt is inserted into the elastic joint member of the elastic member that is supported by the two ends in the width direction in the incision portion and the expansion joint member, An anchor nut is fastened to the anchor bolt protruding upward, and the anchor nut is filled with before and after the fastening of the anchor bolt, characterized in that it comprises a sealant for the purpose of flattening and waterproofing the concrete.

In addition, the step of cutting to a certain depth so that the expansion joint member is seated on both ends of the concrete joint of the bridge, the step of breaking the concrete cut in the step to make a cut, and inserting the backup agent to secure the amount of expansion in the concrete gap And installing an anchor bolt by drilling a hole using a power tool at a predetermined position of the cutout portion, and applying the sealant sufficiently for the purpose of flatness and waterproofing of concrete after the anchor bolt is installed. Inserting into the anchor bolt so that the expansion joint member is seated on the part and then fastening with an anchor nut, and tightening the anchor nut to the anchor bolt, and then filling the space formed by the expansion joint member, the anchor bolt and the anchor nut with sealant Characterized in that consisting of steps.

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

6 is a configuration diagram of the expansion joint according to the present invention.

The expansion joint according to the present invention, as shown in Figure 6, the cut portion formed in the c-shaped symmetrical and symmetrical to the c-shape on both concrete 110 of the bridge to maintain a constant interval by the backup agent (a) A plurality of anchor bolts 120 installed at a predetermined length on the bottom surface of the 111 and 112 to protrude upwards, and the steel plate 131 which is inserted into and supported by the anchor bolts 120 are insert-molded and the cutouts 111 and 112 An elastic nut member 130 of an elastic material which is supported by both ends in the width direction thereof, an anchor nut 140 that is fastened to the anchor bolt 120 protruding upward from the elastic joint member 130, and the anchor nut 140. Filling 140 before and after the fastening of the anchor bolt 120 includes a sealant 150 to finish for the purpose of flattening and waterproofing the concrete.

Herein, the expansion joint member 130 will be described in more detail. In addition, the steel plate 131 may be molded in the longitudinal direction on both sides of the rubber plate 132 which is an elastic material so that the anchor bolt 120 is inserted and supported from the bottom. A plurality of grooves 133 are formed at an upper portion thereof so that the anchor nut 140 is fastened to the anchor bolts 120 to be in close contact with the upper portion of the steel plate 131, while the lower portion thereof is aligned with the shape of the backup agent (a). Is formed, the upper portion is formed with an elastic groove 134 to facilitate elasticity.

In addition, the anchor bolt 120 is molded from a synthetic rubber product to excellent waterproof.

The installation method using the expansion joint device as shown in Figure 7a to 7g, the step of cutting to a certain depth so that the expansion joint member 130 is seated on both ends of the concrete 110 (S1), cutting in the step Step (S2) to make the cut portion (111, 112) to flatten the concrete 110, the step of inserting a backup agent (a) to secure the amount of stretch in the flow of the concrete (110) and the incision Installing an anchor bolt 120 by drilling a hole using a power tool at a predetermined position of the parts (111, 112) (S4), and after installing the anchor bolt 120, the sealant for the purpose of flatness and waterproofing of concrete ( SELANT; b) sufficiently applying the step (S5), and to the anchor bolt 120 so that the elastic joint member 130 is seated in the incision (111, 112) and then fastened with the anchor nut 140 (S6) ), And then the anchor nut 140 is fastened to the anchor bolt 120 and the expansion tank Agent comprises a member 130 and the anchor bolts 120 and the anchor nuts step (S7) to (140) is filled by forming a closed space with sealant 150. [

Therefore, the expansion joint member 130 of the expansion joint according to the present invention is excellent in durability because the insert is formed of the steel plate 131 therein when the length is increased and contracted as the concrete 10 is stretched.

That is, since the expansion joint member 130 is fixed by the anchor bolt 120 and the anchor nut 140 as the concrete 10 is stretched, a certain amount of length is increased and contracted to provide pedestrian walking safety. .

In addition, since the expansion joint is embedded in the concrete, it provides convenience to the passage, as well as removing the concrete 10 only a little after planting the anchor bolt 120, the expansion joint member 130 anchor nut 140 and the sealant By filling with 150, the construction is very simple at the time of installation and replacement, and does not damage the structure.

In addition, if the sealant 150 is removed, the anchor nut 140 is released, and the expansion joint member 130 is removed, the exchange can be simplified.

On the other hand, since the outer appearance is the same as the expansion joint of the existing driveway, the appearance is very good, as well as the anchor bolt 120 is molded of synthetic rubber is excellent in water resistance.

As described above, according to the present invention, the expansion joint of the sidewalk portion can provide reliability in terms of safety and structure of walking, and can be installed at a simple construction and low cost.

Claims (3)

In the expansion joint installed in the sidewalk of the bridge, A plurality of anchor bolts installed to protrude upward by planting a predetermined length in the bottom surface of the cutout formed on both concretes of the joint by the backup agent, and the steel plate supported by the anchor bolts are insert-molded. The elastic joint member of the elastic member which is supported by the both ends in the width direction to be seated, the anchor nut which is fitted to the expansion joint member and fastened to the anchor bolt protruding upward, and filling the anchor nut before and after the anchor bolt is fastened Extension joint device for the sidewalk of the bridge characterized in that it comprises a sealant for the purpose of flattening and waterproofing the concrete. According to claim 1, The expansion joint member, the steel plate is formed in the longitudinal direction on both sides of the inner side of the rubber plate of the elastic material so that the anchor bolt is inserted from the lower support, the anchor nut is fastened to the anchor bolt at the top A plurality of grooves are formed to be in close contact with the upper portion of the steel plate, while the lower portion is formed to match the shape of the backing agent, the upper portion of the expansion joint for the bridge joint characterized in that the elastic groove is formed to facilitate the elasticity . Cutting to a certain depth so that the expansion joint member is seated on both ends of the bridge concrete, making a cut by flatly breaking the cut concrete in the step, and inserting a backing agent to secure the amount of expansion in the flow of the concrete. And installing an anchor bolt by drilling a hole using a power tool at a predetermined position of the cutout, and applying the sealant sufficiently for the purpose of flattening and waterproofing the concrete after installing the anchor bolt. Inserting into the anchor bolt so that the expansion joint member is seated in the anchor bolt, and fastening the anchor nut to the anchor bolt, and then filling the space formed by the expansion joint member, the anchor bolt, and the anchor nut with sealant to finish. Of the expansion joint for the sidewalk of the bridge Installation method.