KR102151069B1 - Bridge supporting apparatus with separable type anchoring members and construction method thereof - Google Patents

Abstract

The present invention relates to a bridge support having a separable shear reinforcing anchor compound and a construction method thereof, wherein the bridge support can minimize a problem of a shear fracture concentrated on a bolt fastening portion, bolt loosening and moisture penetration while fastened by a bolt so that a lower plate can be simply separated from a lower structure without lifting an upper structure of the bridge.

Description

Bridge bearing with separate anchor composite by bolting and its construction method {BRIDGE SUPPORTING APPARATUS WITH SEPARABLE TYPE ANCHORING MEMBERS AND CONSTRUCTION METHOD THEREOF}

The present invention relates to a bridge support, and in particular, the problem of shear failure concentrated on the bolted portion, bolt loosening and moisture penetration while fastening with bolts so that the lower plate can be simply separated from the lower structure without raising the upper structure of the bridge. It relates to a bridge bearing and its construction method suitable to minimize

In general, between the upper structure and the lower structure of a bridge, the vertical load acting on the upper structure is accommodated, and the relative displacement due to the impact of seasonal temperature changes, wind, earthquake, etc., or the shear displacement acting horizontally, Bridge support is formed to extend the service life. The bridge bearing is installed in consideration of durability, constructability, maintenance, and economics, although there is a difference in degree according to the characteristics of the bridge.

A conventional general bridge support consists of an upper plate, a lower plate, and an intermediate support member provided between the upper plate and the lower plate, and the bridge support of this configuration is installed between the upper structure and the lower structure of the bridge. That is, the upper plate of the bridge support is fixed to the upper structure side, and the lower plate is fixed to the lower structure side. Here, the intermediate support member may be provided with an elastic body or a steel material. In the case of an elastic body, the reinforcing plate and the rubber are sequentially stacked in multiple layers.

When a vertical load is applied to a bridge bearing having such a structure, the rubber inside the intermediate support member swells, and at the same time, the internal reinforcement plate interferes with the expansion of the rubber, thereby increasing the load bearing capacity of the rubber against the vertical load to accommodate the vertical load. . Likewise, when a horizontal displacement occurs in a bridge bearing, the rubber absorbs the displacement through shear deformation, and even when a bridge bearing receives a rotational displacement, it receives the force acting upon rotation by the elasticity of the rubber.

In the case of the bridge support, maintenance is not easy because the upper plate and the lower plate are installed in a state that is completely fixed by mortar to the upper structure and the lower structure of the bridge, but recently, as shown in FIGS. 1 and 2, the anchor socket Since the bay is embedded in the lower structure and the lower plate is fastened to the anchor socket using a bolt anchor, it is easier to separate the lower plate from the lower structure.

However, in the case of the bridge bearing shown in FIG. 1, there is a structural problem in that the bolt 14 easily breaks during a normal live load and seismic resistance because the bolt 14 must resist shear load. Therefore, in order to prepare for this, the specification of the bolt 14 must be made as large as possible. In this case, there is a problem in that the bolt 14, which is frequently replaced, cannot be used as a standardized general one and a dedicated bolt 14 must be manufactured.

In addition, in the case of the bridge support shown in FIG. 2, the bolt 14 and the anchor socket 13 are combined by providing an insertion groove 12a into the lower plate 12 into which the upper end of the anchor socket 13 is inserted. However, in this case, the cross-sectional area was increased so that the stiffness to resist the shear load was increased. However, the upper end of the anchor socket (13) was inserted into the insertion groove (12a) when separating the bridge bearing for maintenance. There was a problem that the maintenance of the bridge bearing itself became extremely difficult because the upper structure had to be raised as much as the inserted height.

Moreover, when the lower plate and the lower structure are fastened with bolts like this, the bolt loosens and loosens due to the vibrations constantly transmitted from the upper structure, resulting in a chronic problem of being separated or weakening the fastening structure. As it penetrates and stays for a long time and corrodes the bolt to a serious level, the rotation of the bolt becomes impossible and the fastening structure is weakened.

Korean Registered Patent Publication No. 0731514 (2007.06.18)

Accordingly, the present invention has been proposed to solve the problems of the related art as described above, and an object of the present invention is to fasten the lower plate with bolts so that the lower plate can be easily separated from the lower structure without raising the upper structure of the bridge. It is to provide a bridge bearing suitable for minimizing the problems of shear fracture, bolt loosening and moisture penetration concentrated in the area and its construction method.

In order to achieve the above object, the bridge support according to the technical idea of the present invention includes an upper plate and a lower plate, and an intermediate support member that is installed between the upper plate and the lower plate to support the upper plate and accommodate the displacement of the upper plate. In the bridge support installed between the upper structure and the lower structure of the bridge, including an anchor composite for fixing the lower plate to the lower structure of the bridge, the anchor composite is buried in the lower structure of the bridge, but the upper surface is An anchor that is buried so as to be exposed to the upper surface of the lower structure, is formed downward from the center of the upper surface, and has an elevating hole formed with a female thread on the inner circumferential surface; A male screw is formed on the outer circumferential surface, inserted into the lifting hole of the anchor, and rotated in one direction in a screw-fastened state, it rises, and if it rotates in the other direction, it descends, and when it rises from the lifting hole of the anchor, the upper end protrudes to the upper side of the lifting hole and the lower part The lower plate is constrained so as not to be displaced in the horizontal direction by being inserted into the lower restriction hole formed on the lower surface of the plate. A lifting plug formed with a wrench groove in the center of the upper surface, and having a bolt hole formed with a female screw in the lower side of the wrench groove, wherein the female screw direction of the bolt hole is opposite to the female screw direction of the lifting hole of the anchor; It has an inner diameter smaller than the lower restraint hole and is formed on the upper surface of the lower plate and is screwed into the bolt hole of the lifting plug through an upper connection hole communicating with the lower restraining hole. A bolt that rises and releases from the bolt hole of the lifting plug when it is lowered while the head is caught on the lower plate and cannot be lowered any more, and when the lifting plug is rotated in one direction and the other direction is rotated; It is installed in a state interposed between the head of the bolt and the upper surface of the lower plate on which the upper connection hole is formed, and is formed in a flat ring shape having a through hole through which the bolt passes, and is made of a soft rubber material. The ring body that buffers between the lower plates, is formed extending in the form of a film of the same material from the inner circumferential surface of the through hole of the ring body, but is equally divided into a plurality along a plurality of incision lines radially formed around the central circular incision. When the bolt penetrates the through hole of the ring body in a downward direction, it is inserted into the upper connection hole of the lower plate along the outer circumferential surface of the bolt and is forcibly fitted into the gap between the bolt and the upper connection hole to press and support the bolt. It includes a fixing member made of; characterized in its technical configuration.

Here, the lifting plug has a lower body formed with a male screw on the outer circumferential surface and screwed into the lifting hole of the anchor, and a cylindrical upper body having a diameter smaller than that of the lower body and inserted into the fastening hole of the lower plate. You can do it.

In addition, the fitting sheet of the fixing member is formed to a thickness of 1/2 of the thickness of the ring body, so that when a plurality of fixing members are stacked, when the fixing member is bent along the outer circumferential surface of the bolt penetrating downwardly It may be characterized in that it is possible to reduce interference with each other.

In addition, the fixing member includes an upper fixing member having an upper through hole, and a lower fixing member having a lower through hole and having the fitting sheet formed from the inner circumferential surface of the lower through hole and divided evenly by an incision line. It can be characterized by being made.

In addition, a plurality of line protrusions protruding concentrically around a circular cutout formed in the center are further provided on the upper surface of the fitting sheet to prevent the bolt from being dislodged upward in a state that is forcibly fitted into the gap between the bolt and the upper connection hole. It can be characterized by that.

In addition, the material of the fixing member fitting sheet may be characterized in that a steel ball and carbon particles that convert kinetic energy transmitted through shock and vibration into thermal energy are added to maintain flexibility and increase rigidity.

In addition, the material of the ring body and the fitting sheet of the fixing member may be vulcanized to increase the shock and vibration absorption rate of high damping rubber.

On the other hand, the construction method of the bridge support according to the present invention is the construction method of the bridge support for constructing the above-described bridge support, in which the anchor is embedded in the lower structure of the bridge, but the upper surface of the anchor is exposed to the upper surface of the lower structure. step; Inserting the elevating plug into the elevating hole of the anchor and screwing it, but screwing the upper end of the elevating plug so as to protrude upward from the elevating hole; Raising the upper plate, the lower plate, and the intermediate support member on the lower structure of the bridge while inserting the lower restraining hole of the lower plate into the upper end of the lifting plug; Positioning the fixing member on the upper surface of the lower plate on which the upper connection hole is formed; Screwing the bolt into the lifting plug by passing through the fixing member and the upper connecting hole and the lower restraining hole of the lower plate, and then rotating the bolt in one direction to raise the lifting plug to fasten the lower plate to the lifting plug; It characterized in that it includes a; step of fastening while raising the upper structure of the bridge to the upper plate.

Here, it may be characterized in that a plurality of the fixing members are stacked on the upper surface of the lower plate.

The bridge support according to the present invention is a detachable type that is easy to separate the lower plate from the lower structure, so it is easy to maintain and repair, and the fastening part between the lower structure and the lower plate is easily broken due to the repeated live load during use and the shear load acting in the event of an earthquake. You can minimize the problem.

In addition, due to the vibrations constantly transmitted from the upper structure, the bolts are loosened and separated, or the bolts' rotational motion is severely corroded by staying for a long period of time due to the chronic problem that the bolts are loosened or weakened the fastening structure. The problem of becoming impossible and weakening the fastening structure can also be solved.

1 and 2 are reference views for explaining the bridge support according to the prior art
3 is a perspective view of a bridge support according to an embodiment of the present invention
Figure 4 is a cross-sectional view for explaining the configuration of the anchor composite in the bridge support according to an embodiment of the present invention
5 is an exploded perspective view of an anchor composite in a bridge support according to an embodiment of the present invention
Figure 6 is a perspective view for explaining the configuration of the fixing member of the anchor composite in the bridge support according to an embodiment of the present invention
7 is a cross-sectional view for explaining the configuration of a fixing member of the anchor composite in the bridge support according to an embodiment of the present invention
8A to 8D are a series of reference diagrams for explaining the action and operation of the fixing member included in the anchor composite in the bridge support according to the embodiment of the present invention
9 and 10 are a series of reference diagrams for explaining the action and operation of the anchor composite in the bridge support according to an embodiment of the present invention

With reference to the accompanying drawings will be described in detail with respect to the bridge support and its construction method according to embodiments of the present invention. Since the present invention can apply various changes and have various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific form of disclosure, and it should be understood that all changes, equivalents, and substitutes included in the spirit and scope of the present invention are included. In describing each drawing, similar reference numerals have been used for similar elements. In the accompanying drawings, dimensions of structures are shown to be enlarged than actual for clarity of the present invention, or reduced than actual to understand a schematic configuration.

Further, terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. Meanwhile, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

<Example>

Figure 3 is a perspective view of a bridge support according to an embodiment of the present invention, Figure 4 is a cross-sectional view for explaining the configuration of the anchor composite in the bridge support according to an embodiment of the present invention, Figure 5 is according to an embodiment of the present invention It is an exploded perspective view of an anchor composite in a bridge bearing. And Figure 6 is a perspective view for explaining the configuration of the fixing member of the anchor composite in the bridge support according to an embodiment of the present invention.

As shown, the bridge support according to the embodiment of the present invention includes an upper plate 10 and a lower plate 20, an intermediate support member 30 installed between the upper plate 10 and the lower plate 20, and In addition, the lower plate 20 is fixed to the lower structure of the bridge, but it includes a detachable anchor composite 100 for implementing a bridge support that is easy to maintain while enhancing resistance to shear loads.

The bridge support according to the embodiment of the present invention is a bolt 130 so that the lower plate 20 can be simply separated from the lower structure without raising the upper structure of the bridge by a configuration having a unique anchor complex 100. While fastening, it is possible to minimize the problems of shear fracture, bolt loosening, and moisture penetration concentrated on the fastening portion of the bolt 130.

Hereinafter, a bridge support according to an embodiment of the present invention will be described in more detail with reference to each component including the anchor composite 100.

The upper plate 10 is a square and wide plate, which is a commonly known steel material, and is fixedly installed on the side of the upper structure of the bridge by a plurality of anchors 110 or bolts 130 buried in the upper structure of the bridge. At this time, a sole plate may be intervened between the upper structure and the upper plate 10.

The lower plate 20, like the upper plate 10, is provided with a square wide plate made of a steel material, and is fixed by an anchor complex 100 partially buried in the lower structure side of the bridge.

The intermediate support member 30 is installed between the upper plate 10 and the lower plate 20 and serves to accommodate the displacement of the upper plate 10 while supporting the upper plate 10. Such an intermediate support member 30 may be provided with a rubber-based material or may be provided with a steel material, and is not limited to any one type. When the intermediate support member 30 is provided in a form in which steel plates and rubber are sequentially stacked, when a vertical load acts from the upper structure of the bridge, the rubber inside the intermediate support member 30 swells, and the internal reinforcing plate expands the rubber. It increases the load-bearing force of the rubber while obstructing it to accommodate the vertical load. Likewise, when the upper structure of the bridge causes horizontal displacement, the rubber absorbs the displacement through shear deformation, and when it causes rotational displacement, it receives the rotational force by the elasticity of the rubber.

The anchor composite 100 is provided so that the lower plate 20 can be simply fastened to or separated from the lower structure without raising the upper structure of the bridge. As shown in FIGS. 4 and 5, the anchor ( 110) and a lifting plug 120, a bolt 130 and a fixing member 140. According to the configuration of such an anchor composite 100, when the lower plate 20 is fastened to the lower structure, as can be seen in the cross-sectional view of FIG. 4, the lifting plug 120 has a much larger cross-sectional area than the bolt 130. It is located between the plate 20 and the anchor 110 and greatly increases the shear resistance area against the load applied in the horizontal direction.

In the anchor complex 100, the anchor 110 is buried in the lower structure of the bridge, but is buried so that the upper surface is exposed on the same plane as the upper surface of the lower structure, and has an elevating hole 111 formed with female threads downward from the center of the upper surface. do.

The lifting plug 120 is formed with a male screw on the outer circumferential surface, inserted into the lifting hole 111 of the anchor 110, and rotated in one direction in a screwed state, and descends when rotated in the other direction. Here, when the elevating plug 120 rises from the elevating hole 111 of the anchor 110, the upper body 122 protrudes upward from the elevating hole 111 and the lower restraining hole 21b of the lower plate 20 The lower plate 20 is constrained so as not to be displaced in the horizontal direction by being in a state of being inserted into it. Conversely, when the lifting plug 120 descends, the upper body 122 is drawn downward from the fastening hole of the lower plate 20 to release the restraint on the lower plate 20. A wrench groove 124 is formed in the center of the upper surface of the lifting plug 120, and a bolt hole 123 formed with a female thread having a diameter narrower than the width of the wrench groove 124 is formed at the lower side of the wrench groove 124. Equipped.

However, the important point here is that the direction of the female screw formed in the bolt hole 123 of the lifting plug 120 must be formed opposite to the direction of the female screw of the lifting hole 111 of the anchor 110. The bolt 130 allows a bolt of a common standard to be used, thereby forming a female screw in the bolt hole 123 of the lifting plug 120 and the lifting hole 111 of the anchor 110 to correspond thereto. According to this configuration, as shown in (a) and (b) of FIG. 9, the body part 131 of the bolt 130 is lifted and the body part 131 of the bolt 130 is lowered into the lifting hole 111 of the anchor 110. When inserted into the bolt hole 123 of 120 and turned to the right, the bolt 130 initially descends with respect to the lifting plug 120, and then the head 132 of the bolt 130 as shown in (c) of FIG. 9 As the head 132 is caught on the lower plate 20, it is in a state that it can no longer descend. If the bolt 130 is continuously turned to the right in this state, the elevating plug 120 as shown in (d) of FIG. 9 A two-step operation is sequentially performed in which the upper body 122 rises while rotating to the right in the lifting hole 111 of the anchor 110 and is drawn into the lower restraint hole 21b of the lower plate 20. Now, if the bolt 130 is turned to the left in the state shown in FIG. 9(d), the bolt 130 rises and exits from the bolt hole 123 of the lifting plug 120 as shown in FIG. 10(a). . After inserting the wrench R1 into the wrench groove 124 of the lifting plug 120 and then turning it to the left as shown in FIG. 10(b), the lifting plug 120 becomes the anchor 110 as shown in FIG. 10(c). ) Descends in the elevating hole 111. Then, as shown in (d) of FIG. 10, the restraint of the lifting plug 120 with respect to the lower plate 20 is released, so that it is possible to remove the bridge support in the horizontal direction between the upper structure and the lower structure without raising the upper structure.

Here, the elevating plug 120 has a lower body 121 which is formed with a male screw on the outer circumferential surface and is screwed into the elevating hole 111 of the anchor 110, and has a diameter smaller than that of the lower body 121 and the lower plate ( It is preferable that it is made of a cylindrical upper body 122 that is inserted into the lower restraint hole 21b of 20). However, since the cross-sectional area of the upper body 122 in the lifting plug 120 refers to the shear resistance area, the size is reduced only to the extent that only the male-threaded portion is cut compared to the lower body 121, and care not to be excessively small.

In the anchor composite 100, the bolt 130 is screwed into the bolt hole 123 of the lifting plug 120 through the upper connection hole 21a from the upper side of the lower plate 20, and FIG. 9(b) As shown in ~ (d), when rotating in one direction (when rotating in the right direction if the bolt of a general standard is in mind), the head 132 is lowered to the lower plate 20 while descending with respect to the lifting plug 120 When it is caught and can no longer descend, it induces rotation in the other direction (rotation in the right direction) of the elevation plug 120 to raise the elevation plug 120. On the other hand, when rotating in the other direction (when rotating in the left direction if the bolt of the general standard is in mind), as shown in (a) of FIG. 10, it rises with respect to the elevation plug 120 and is separated from the elevation plug 120.

On the other hand, in order to realize the structure of a double nut that lifts and moves by inserting the lift plug 120 into the lift hole 111 of the anchor 110 as in the present invention, the lift plug 120 installed inside the anchor 110 is lifted. In order to rotate by inserting a wrench (R1) in order to rotate the bolt hole 123, the wrench groove 124 and the upper connecting hole (21a) to the lower side of Figure 7 as shown in comparison, the body portion 131 of the bolt 130 An upper connection hole 21a having a wider inner diameter must be formed in the lower plate 20. Accordingly, a new problem arises in that the upper end of the body portion 131 of the bolt 130 is left in a state that is hardly supported by the upper connection hole 21a when the bolt 130 is fastened. Such a problem is a chronic problem that weakens the fastening structure due to the loosening or loosening of the bolt due to the continuous vibration, and the rotation of the bolt becomes impossible as moisture penetrates along the bolt and corrodes the bolt to a serious level while staying for a long time. It has a unique disadvantage of the present invention that further exacerbates the problem of weakening the fastening structure. However, the fixing member 140 solves this problem, and the fixing member 140 will be described in detail below.

The fixing member 140 is inevitably formed between the upper connection hole 21a formed in the lower plate 20 and the lifting plug 120 inserted into the lifting hole 111 of the anchor 110 and the bolt 130 While filling the gap and compressing it, it suppresses the phenomenon that the bolt 130 is loosened due to the vibration constantly transmitted from the outside, and serves to minimize the penetration of moisture that corrodes the bolt 130 and the lifting plug 120. To this end, the fixing member 140 includes a ring body 141 formed in a flat ring shape as shown in FIG. 6, a fitting sheet 143 extending in a film shape in the central through hole 142, and the fitting sheet (143) It consists of a rhine protrusion 144 formed on the upper surface.

The ring body 141 of the fixing member 140 is formed in a flat ring shape having a through hole 142 through which the bolt 130 passes in the center, so that the head 132 of the bolt 130 and the upper connection hole ( It is installed in a state interposed between the upper surfaces of the lower plate 20 on which 21a) is formed. The ring body 141 is made of an elastic soft rubber material to effectively block moisture from penetrating into the upper connection hole 21a.

The fitting sheet 143 of the fixing member 140 is formed extending from the inner circumferential surface of the through hole 142 of the ring body 141 in the form of a film of the same material, and a plurality of radially formed centers of the circular cutout 143a in the center It is equally divided into a plurality along the cut line (143b). According to this configuration, as shown in FIGS. 8A to 8D, each of the fitting sheet 143 divided into a plurality of pieces when the bolt 130 passes downward through the through hole 142 of the ring body 141 without a separate process. The objects are simultaneously drawn to the outer circumferential surface of the bolt 130 and are forced into the gap between the bolt 130 and the upper connection hole 21a while being drawn into the upper connection hole 21a of the lower plate 20. Accordingly, the fitting sheet 143 of the fixing member 140 presses the bolt 130 in all directions within the upper connection hole 21a of the lower plate 20 to stably support it, due to the vibration transmitted from the outside. It is possible to effectively prevent the problem that the bolt 130 is loosened and separated or the fastening state is loose. Moreover, the material of the fitting sheet 143 is to support the bolt 130 more firmly by a reinforcing structure to which a steel ball 145 for increasing rigidity is added while maintaining flexibility as shown in the enlarged portion of FIG. It is possible, and the bolt 130 by a vibration energy damping structure that attenuates the vibration energy transmitted from the outside to the bolt 130 by adding fine carbon particles 146 that convert kinetic energy transmitted through shock and vibration into thermal energy. Will be able to support more stably.

In addition, the material of the ring body 141 and the fitting sheet 143 of the fixing member 140 is vulcanized among rubber, and is provided with a high damping rubber that increases the shock and vibration damping rate. It is configured to attenuate the vibration energy transmitted to the maximum as much as possible. The high-attenuation rubber used as the material of the fixing member 140 has excellent ability to absorb shock and vibration energy by itself and has a high proof strength, so it has excellent ability to absorb vibration and shock compared to natural rubber. Can be absorbed more effectively by a small amount of deformation. High-attenuation rubber refers to a product specialized to absorb vibration energy and impact energy more effectively by changing the blending ratio of the composition.For example, by changing the content of vulcanizing agent to increase the vibration cycle, the effect of vibration energy can be reduced. I can do it. In the case of such a high-attenuation rubber, it is used in some areas as a material for an intermediate support member in the field of bridge support technology, and is already known in the previously filed'high-attenuation rubber composition (PCT/JP1997/002309)', so a detailed description will be omitted. .

Furthermore, the fitting sheet 143 of the fixing member 140 is formed to have a thickness of 1/2 of the thickness of the ring body 141 so that the fitting sheet 143 stacked up and down even when a plurality of fixing members 140 are stacked When bent, it is possible to be smoothly inserted into the upper connection hole 21a of the lower plate 20 along the bolt 130 so as to be smoothly bent without interfering with each other. However, stacking the fixing member 140 in this way fills the gap between the upper connection hole 21a and the body portion 131 of the bolt 130, but selectively in the case that only one layer of the fitting sheet 143 is insufficient. You can do it.

Here, the fixing member 140 includes an upper fixing member 140a having an upper through hole, a lower through hole, and a fitting sheet formed from the inner circumferential surface of the lower through hole and divided equally by the cut line 143b. A lower fixing member 140b having 143 is bonded to each other. In this way, according to the configuration in which the upper fixing member 140a and the lower fixing member 140b are joined up and down to form the fixing member 140, the upper fixing member 140a and the lower fixing member ( Since 140b) can be manufactured and bonded separately, there is no need to prepare a complicated mold and time required for manufacturing can be saved.

On the other hand, the upper surface of the fitting sheet 143 is further provided with a plurality of line protrusions 144 protruding concentrically around the circular cutout 143a formed in the center. When the line protrusion 144 is formed on the upper surface of the fitting sheet 143 in this way, the bolt 130 in a state where the fitting sheet 143 is forcibly fitted into the gap between the body portion 131 of the bolt 130 and the upper connection hole 21a. It has an advantage in that it can exert a stronger deterrent so that) does not deviate upward.

Briefly looking at the bridge support construction method for constructing the bridge support according to the embodiment of the present invention described above, the anchor 110 of the anchor complex 100 is buried in the lower structure of the bridge, but the anchor 110 to the upper surface of the lower structure The step of burying so that the upper surface of the lifting plug 120 is exposed, and screwed by inserting the lifting plug 120 into the lifting hole 111 of the anchor 110, but the upper body 122 of the lifting plug 120 is the lifting hole 111 Screw-fastening so as to protrude upward of the upper plate 10 and lower plate 20 while inserting the lower restraining hole 21b of the lower plate 20 into the upper body 122 of the lifting plug 120. ) And the step of raising the intermediate support member 30 to the lower structure of the bridge, the fixing member 140 as shown in (a) to (d) of FIG. 9, the lower plate 20 having the upper connection hole (21a) formed Step of fastening the bolt 130 to the elevating plug 120 by passing the bolt 130 through the through hole 142 of the fixing member 140 and the upper connection hole 21a while being positioned on the upper surface, and attaching the upper structure of the bridge to the upper plate. It is made including the step of tightening while raising to (10).

If it is necessary to replace the already installed bridge support, remove the bolt 130 by turning it to the left as shown in (a) of FIG. 10, and then use a wrench (R1) as shown in (b) to (c) of FIG. 10. When the plug 120 is turned to the left and lowered from the lifting hole 111 of the anchor 110, the lower structure and the lower plate 20 of the bridge support are separated.

Thereafter, as shown in (d) of FIG. 10, the existing bridge bearing can be pulled out in the horizontal direction and replaced with a new or repaired one. And it is also possible to replace the damaged parts of the anchor composite (100). After placing the bridge support 20 (whether new or repaired) in the correct position as shown in Fig. 9 (a), the fixing member 140 is also placed in the correct position. Then, the bolt 130 is lowered through the through hole 142 of the fixing member 140 and the upper connection hole 21a of the lower plate 20 as shown in (b) of FIG. 9 to the bolt hole of the lifting plug 120 Tighten to (123).

In this process, as described above, the fitting sheet 143 of the fixing member 140 is drawn by the body portion 131 of the bolt 130 to descend, and the body portion 131 of the bolt 130 and the upper connection hole 21a It is naturally forced into the gap.

When turning the Iru bolt 130 to the right, the bolt 130 initially descends along the bolt hole 123 of the lifting plug 120, so that the head 132 becomes the lower plate 20 as shown in (c) of FIG. 9. ) And can no longer descend. In this way, if the bolt 130 is continuously turned to the right while the bolt 130 is no longer descending, the lifting plug 120 rises in the lifting hole 111 of the anchor 110 as shown in (d) of FIG. 9 Thus, the upper body 122 is inserted into the lower restraint hole 21b of the lower plate 20 to restrain the lower plate 20, thereby completing partial or complete replacement of the bridge support or the anchor complex.

Although the preferred embodiment of the present invention has been described above, the present invention can use various changes, modifications, and equivalents. It is clear that the present invention can be applied in the same manner by appropriately modifying the above embodiments. Therefore, the above description does not limit the scope of the present invention determined by the limits of the following claims.

10: upper plate 20: lower plate
21a: upper connection hole 21b: lower restraint hole
30: intermediate support member 100: anchor composite
110: anchor 111: lifting hole
120: lifting plug 121: lower body
122: upper body 123: bolt hole
124: wrench groove 130: bolt
R1: wrench 140: fixing member
140a: upper fixing member 140b: lower fixing member

Claims (8)

In the bridge support installed between the upper structure and the lower structure of the bridge, including an upper plate and a lower plate, and an intermediate support member installed between the upper plate and the lower plate to support the upper plate and accommodate the displacement of the upper plate,
It includes an anchor composite for fixing the lower plate to the lower structure of the bridge,
The anchor composite is embedded in the lower structure of the bridge, the upper surface is buried so as to be exposed to the upper surface of the lower structure, is formed downward from the center of the upper surface, and an anchor having an elevating hole formed with a female thread on the inner peripheral surface; A male screw is formed on the outer circumferential surface, inserted into the lifting hole of the anchor, and rotated in one direction in a screw-fastened state, it rises, and if it rotates in the other direction, it descends, and when it rises from the lifting hole of the anchor, the upper end protrudes to the upper side of the lifting hole and the lower part The lower plate is in a state of being inserted into the lower restraint hole formed on the lower surface of the plate so that the lower plate is not displaced in the horizontal direction, and when it is lowered, the upper end is drawn downward from the fastening hole of the lower plate to restrain the lower plate. A lifting plug formed with a wrench groove in the center of the upper surface, and having a bolt hole formed with a female screw in the lower side of the wrench groove, wherein the female screw direction of the bolt hole is opposite to the female screw direction of the lifting hole of the anchor; It has an inner diameter smaller than the lower restraint hole and is formed on the upper surface of the lower plate and is screwed into the bolt hole of the lifting plug through an upper connection hole communicating with the lower restraining hole. A bolt that rises and releases from the bolt hole of the lifting plug when it is lowered while the head is caught on the lower plate and cannot be lowered any more, and when the lifting plug is rotated in one direction and the other direction is rotated; And a fixing member interposed between the head of the bolt and the upper surface of the lower plate on which the upper connection hole is formed,
The fixing member,
It is installed in a state interposed between the head of the bolt and the upper surface of the lower plate on which the upper connection hole is formed, and is formed in a flat ring shape having a through hole through which the bolt passes, and is made of a soft rubber material. A ring body that functions as a buffer between the lower plates, and the ring body extending in the form of a film of the same material from the inner circumferential surface of the through hole of the ring body, and having a circular incision in the center, along a plurality of incision lines radially formed around the circular incision. When the bolt passes through the through hole of the ring body in a downward direction, it is inserted into the upper connection hole of the lower plate along the outer circumferential surface of the bolt and is forced into the gap between the bolt and the upper connection hole to press the bolt. It is made of one fitting sheet to support it,
The fitting sheet is formed to have a thickness of 1/2 of the thickness of the ring body, so that even when a plurality of fixing members are stacked, when the fitting sheet is bent along the outer circumferential surface of the bolt passing downward through the through hole of the ring body, To reduce interference with
An upper fixing member having an upper through hole and a lower fixing member having a lower through hole communicating with the upper through hole and having the fitting sheet formed from the inner circumferential surface of the lower through hole and divided equally by an incision line, respectively. Bridge support, characterized in that it is made to be bonded after being manufactured. The method of claim 1,
The elevating plug is formed of a male screw on the outer circumferential surface of the lower body screwed into the lifting hole of the anchor, and a cylindrical upper body having a diameter smaller than that of the lower body and inserted into the fastening hole of the lower plate. Bridge support. delete delete The method of claim 1,
A plurality of line protrusions protruding concentrically around a circular cutout formed in the center are further provided on the upper surface of the fitting sheet to prevent the bolt from being separated upward in a state that is forcibly fitted into the gap between the bolt and the upper connection hole. Bridge support characterized by. The method of claim 1,
A bridge support, characterized in that a steel ball and carbon particles that convert kinetic energy transmitted through shock and vibration into heat energy are added to the material of the fixing member fitting sheet to increase rigidity while maintaining flexibility. The method of claim 1,
A bridge support, characterized in that the material of the ring body and the fitting sheet of the fixing member is vulcanized to increase the shock and vibration damping rate. As a construction method of a bridge support for constructing any one of paragraphs 1, 2, 5, 6, and 7,
Burying the anchor in the lower structure of the bridge, but burying the anchor so that the upper surface of the anchor is exposed to the upper surface of the lower structure;
Inserting the elevating plug into the elevating hole of the anchor and screwing it, but screwing the upper end of the elevating plug so as to protrude upward from the elevating hole;
Raising the upper plate, the lower plate, and the intermediate support member on the lower structure of the bridge while inserting the lower restraining hole of the lower plate into the upper end of the lifting plug;
Positioning the fixing member on the upper surface of the lower plate on which the upper connection hole is formed;
Screwing the bolt into the lifting plug by passing through the fixing member and the upper connecting hole and the lower restraining hole of the lower plate, and then rotating the bolt in one direction to raise the lifting plug to fasten the lower plate to the lifting plug;
Fastening while raising the upper structure of the bridge to the upper plate;
Construction method comprising a.

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