KR101874007B1 - Vibration reduction prefabricated extension sidewalk - Google Patents

Abstract

In order to ensure safe walking and structural stability by compensating and reducing the vibration load applied from a structure in the process of being transmitted to the walkway, the present invention relates to an earthquake-resistant and vibration-reducing type prefabricated expansion sideway (1), comprising: a base bracket (3) mounted to be extended to the outside of a structure (10); and a walking means (3) including a plurality of rectangular steel elements (31), which are mounted on the upper flange (22) of the base bracket (2), have a length in the longitudinal direction of the structure (10) and are installed to be spaced apart from each other, and floor materials (32), which are installed on the rectangular steel members (31) and formed of a plate-shaped plate members such that users are allowed to walk thereon, and provides the earthquake-resistant and vibration-reducing type prefabricated expansion sideway further comprising a vibration reducing means (4) provided on the upper flange (22) of the base bracket (2) and having circular rolling elements (41) provided for idling while the upper ends thereof come into linear contact with the lower portion of the walking means (3) and having outer circumferential surfaces formed in a circular shape.

Description

{Vibration reduction prefabricated extension sidewalk}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a prefabricated expanded sidewalk installed on a side of a structure such as a bridge, a retaining wall, or the like in a longitudinal direction to allow a pedestrian to walk, and more particularly, Vibration-reducing type prefabricated expanded sidewall that can secure safe walking and structural stability.

Generally, a bridge is an elevated structure that allows a vehicle or a pedestrian to cross over a river, a lake, a strait, a bay, a canal, a jungle, or other transportation roads or a structure. The retaining wall is made of soil It means a structure made to prevent the ground collapse which occurs when the steep slope of the ground surface is set to a steep slope, and it is made of various materials such as concrete, metal, wood and stone depending on the surrounding environment and characteristics .

These bridges and retaining walls may be used differently from the initial installation purpose. In particular, bridges were initially installed as pedestrian-only bridges. In order to protect the pedestrians from the vehicles as the traffic increased, It may be constructed so that traffic and pedestrian traffic are combined, and in some cases, an extension report is added by pedestrians on the side of the bridge.

As disclosed in Korean Patent Publication No. 10-0952610 (titled "Extension for bridges"), one of the expanded reports includes a fixing plate which is fixed at the upper end portion of the side surface of the bridge by a fastening member A support bracket connected to the fixing plate and extending outwardly and having upper and lower flanges and a web, a rectangular steel pipe vertically spaced apart from the upper flange of the support bracket and fixed to the upper flange, A flooring fixed by; And a fence secured to the outer end of the support bracket for protecting the pedestrian.

Korean Patent Registration No. 10-0948501 entitled " Extension guide for retaining wall and method of construction thereof ") discloses a vertical support having a lower end embedded in an inclined surface and arranged at regular intervals as known in the art; A plurality of horizontal brackets connecting the exposed portions of the vertical struts in a horizontal direction to prevent them from falling in a lateral direction; A support bracket integrally welded to an upper end of the vertical support and extending outwardly and comprising upper and lower flanges and a web; An auxiliary support portion extending from the upper flange of the support bracket to the vertical support side and being in contact with the upper surface of the vertical support; A reinforcing rib formed at the front center of the vertical support to prevent lateral flexure of the support bracket web; A rectangular steel pipe fixed at a predetermined interval in a direction perpendicular to the upper flange of the support bracket; A flooring fixed to the upper portion of the square steel pipe by a joining member; And a fence secured to an outer end of the support bracket to protect the pedestrian. The connection between the prismatic steel pipes is established by welding one end of the prismatic steel pipe to one side of the prismatic steel pipe, An extended guide is described which is inserted into the interior of a rectangular steel pipe and connected by a connecting pipe which is elastically inserted by a lubricant.

On the other hand, in Korean Patent Registration No. 10-1083303 (named as a bridge-type extended retractable sidewall for a retaining wall), as is known in the art, the upper flange, the lower flange, the web and the side flange A base bracket extending to the outside of the bridge; A plurality of rectangular steel rods installed on the base bracket and spaced apart from each other at a predetermined interval in the longitudinal direction of the bridge; An assembled body coupled to the base bracket such that the rectangular steel can be stretched and contracted according to a temperature change; An expanding sidewall including a floor material installed on the upper part of the rectangular steel and a safety fence installed on an upper flange on an outer side of the base bracket.

Further, in Korean Patent Registration No. 10-1185431 (name: Hybrid construction for bridges), as known in the art, the bridges are closely attached to the upper and other surfaces of the curb and are continuously provided by chemical anchors, An aluminum material girder which has a "T" shape so as to be inserted between the joining plates and is joined to the joining plates by a bolt and is connected in a multi-stage so as to be smaller in height while being joined by bolts, And a bolt head is inserted into the groove, and the bolt is fastened to the threaded portion of the bolt by a locking bolt. Aluminum anti-fall guard rails, a plurality of aluminum rebate beams mounted on the upper surface of the girder, and an anti-vibration on the upper surface of the cross beams Radish, a hypothesis India including a deck which is installed tightly in the lateral girder on the upper surface of the vibration-proof rubber is described.

Korean Patent Registration No. 10-0952610 Korean Patent Registration No. 10-0948501 Korean Patent Registration No. 10-1083303 Korean Patent Registration No. 10-1185431

However, since the conventional expanded sidewalks as described above are not provided with seismic isolation design, when the earthquake occurs or the vibration force due to the vehicle impact passing through the bridge is directly transmitted to the extended sidewalk, the pedestrian safety of the pedestrian is infringed, . ≪ / RTI >

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned conventional problems, and it is an object of the present invention to provide a safety gait and a safety gait by reducing the vibration load applied to a structure such as a bridge, a retaining wall, And to provide a seismic and vibration-reduction type prefabricated expanded sidewalk that can secure structural stability

According to an aspect of the present invention, there is provided an earthquake-resistant and vibration-reducing type prefabricated expanded sidewalk, comprising: a base bracket extending outwardly from a structure; A plurality of rectangular steel plates disposed on the upper flange of the base bracket and spaced apart from each other with a length in the longitudinal direction of the steel plate and a plate plate And a walking means having a plate and having a floor member for users to walk on; The upper flange of the base bracket may further include a vibration reduction means having a circular rolling body whose outer circumference is formed in a circular shape so that the upper end is in line contact with the lower portion of the walking means while rotating idly.

The vibration-absorbing and vibration-reducing type extended sidewalk according to the present invention is installed on a side surface of a structure such as a bridge or a retaining wall so that the user can walk. When vibration loads applied to the structure are transmitted to the extension sidewalk, In the transmission process of the vibration load, the contact is minimized and the vibration load is transmitted in a reduced state. Thus, the offset can be stably reduced, the walk of the pedestrian walking on the floor can be realized safely, and the structural stability can be ensured.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a seismic and vibration-reducing type prefabricated expanded sidewalk according to an embodiment of the present invention; FIG.
Fig. 2 is a schematic side cross-sectional view showing a seismic and vibration-reducing type prefabricated expanded sidewalk according to the present embodiment; Fig.
Fig. 3 is a schematic plan view showing an earthquake-proof and vibration-reducing type prefabricated expanded sidewalk according to the present embodiment; Fig.
Fig. 4 is a schematic enlarged schematic view showing a vibration reduction means constituting a vibration type and vibration-reducing type prefabricated expanded sidewalk according to the present embodiment.
Fig. 5 and Fig. 6 are schematic enlarged views of some excerpts showing the operation state of the vibration reducing means constituting the assembled-type expansion-sideways vibration-proof and vibration-reducing type building according to the present embodiment.
Figs. 7 to 9 are schematic explanatory views showing still another example of the vibration reducing means constituting the prefabricated and expanded-vibration-type prefabricated expanded sidewalk according to the present embodiment.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an earthquake-proof and vibration-reducing type prefabricated expanded sidewalk according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention can be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more fully describe the present invention to those skilled in the art. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Detailed descriptions of well-known functions and constructions which may be unnecessarily obscured by the gist of the present invention are omitted.

Figs. 1 is a perspective view of a vibration-reducing extension type sidewall according to an embodiment of the present invention. The vibration-reduction type vibration-reduction type sidewise extension-type sidewalk 1 according to the present embodiment is a sidewall of a structure 10 such as a bridge, a retaining wall, And is applied to a pedestrian's foot which is installed in the longitudinal direction. In the process of transmitting vibration load generated by a natural disaster such as an earthquake to the structure 10 and then transmitted to the expanded sidewalk 1, The vibration energy of the pedestrian is stably canceled and reduced, thereby ensuring safe walking and structural stability of the pedestrian.

The earthquake-proof and vibration-reducing type prefabricated extension-type sidewalk 1 according to the present embodiment includes a plurality of base brackets 2 that are spaced apart from each other by a side surface of the structure 10 and are fastened through the anchor bolts 21, , And a walking means (3) fixed on the upper surface of the base brackets (2) in a longitudinal direction of the structure (1) and constituting a walkway to be walked by the pedestrian.

That is, the pedestrian makes a walk through the walking means (3).

The base bracket 2 is provided on a side surface of the structure 10 to expand the width of the structure 10 in the seismic and vibration-reducing type prefabricated expanded sidewalk 1 according to the present embodiment, A vertical flange 23 extending downward from the upper flange 22 and a lower flange 22 extending downward from the upper flange 22. The upper flange 22 is formed of a plate having a predetermined length, And a side flange (24) fixed to a side of the vertical flange (23) and connected to the side of the vertical flange (23); It is preferable that the cross section is formed in the shape of an H-shaped steel (or an I-shaped steel) and the inclined shape in which the vertical flange 23 is gradually narrowed toward the outer side; A side flange 24 is further provided on the base bracket 2 so as to engage the surface contact between the base bracket 2 and the structure 10 and the anchor bolt 21 to increase the contact area Most preferred.

Between the vertical flange 23 and the side flange 24 of the base bracket 2, ribs not shown may be provided to disperse a part of the load received by the base bracket 2.

In the seismic and vibration-reduction type prefabricated extension-type sidewalk 1 according to the present embodiment, the walking means 3 is provided at the upper portion of the base bracket 2 in the longitudinal direction of the structure 10, And a floor material 32 fixed on the upper surface of the rectangular steel 31 and constituting a walkway to be walked by the pedestrian.

The rectangular steel 31 is a rectangular steel pipe which is formed in a square pillar shape and in a hollow state by being hollowed and formed in a vertical direction in the upper part of the base bracket 2, that is, at a predetermined interval in the longitudinal direction of the structure 10 A plurality of units are installed.

In place of the rectangular steel 31, another type of steel to replace the rectangular steel 31, such as C-shaped steel, may be applied, and is preferably applied by a user.

Meanwhile, the earthquake-proof and vibration-reducing type prefabricated extension-type sidewalk 1 according to the present embodiment may further include an unshown combined body for coupling the rectangular steel 31 and the base bracket 2, May be configured to actively receive the rectangular steel (31) at a coupled location when a length variation occurs with temperature.

The floor material 32 may be made of various materials such as wood, synthetic wood or synthetic resin, and may be installed on the upper portion of the rectangular steel 31 by a coupling screw.

In the above-described earthquake-proof and vibration-saving type prefabricated extension-type sidewalk 1 according to the present embodiment, the base bracket 2 is provided with the walking means 3 for canceling the vibration energy transmitted from the structure 10, And the vibration reduction means 4 is provided so as to transmit the vibration to the floor member 32 so that the pedestrian walking through the floor member 32 can be safely walked by stably canceling the vertical vibration applied by the structure 10, Thereby securing stability.

The vibration reduction means 4 is provided on the upper flange 22 of the base bracket 2 and has an upper end that is in line contact with the lower portion of the walking means 3 and idly rotated, And a circular cloud body (41).

That is, when the vibration energy applied from the structure 10 is applied from the base bracket 2, the circular rolling body 41 idles between the walking means 3 and the upper flange 22, And the vibration load is canceled by the movement.

At this time, in the lower part of the upper flange 22, while the base bracket 2 is swinging (vibrating), the circular rolling body 41 idles while the walking means 3 ) Is subjected to rolling motion through linear reciprocating motion, the transmitted vibration load is minimized.

Accordingly, the vibration energy guided to the rectangular steel 31 and the floor material 32 through the base bracket 2 is remarkably reduced, thereby ensuring pedestrian safety and structural stability of the pedestrian.

On the upper surface of the upper flange 22 is provided a fixing frame 25 for receiving the circular rolling body 41 so as to idle so that the circular rolling body 41 is fixed on the upper surface of the upper flange 22 It is preferable to prevent it from being separated.

It is most preferable that the walking means 3 further includes a rolling plate 33 fixed to a lower portion of the rectangular steel plates 31 and having a bottom surface in line contact with an upper end of the circular rolling member 41.

That is, it is preferable that the rolling plate 33 is stably rolling at the upper end of the circular rolling body 41, and the rectangular steel 31 is indirectly supported, so that the rolling motion is more smoothly performed Do.

It is most preferable that the opposite ends of the rolling plate 33 are formed with stopping portions 34 facing the opposite sides of the fixing plate 2 so as to limit the range of movement of the rolling plate 33 .

Hereinafter, the operation and effect of the seismic and vibration-reduction type prefabricated expanded sidewalk 1 according to the present embodiment will be described in detail.

The side flange 24 of the base bracket 2 is attached to the outer surface of the structure 10 at the time of constructing the assembled expansion-type sidewalk 1 of the seismic and vibration- The anchor bolts 21 are fastened and fixed.

The plurality of base brackets 2 are installed at predetermined intervals in the longitudinal direction of the structure 10 and the rectangular steel 31 is welded to the upper surface of the base bracket 2 And then fixed by means of an assembled joint.

When the floor material 32 is sequentially installed on the upper part of the square steel 31 through a separate coupling screw, the construction is completed.

The assembled extension sidewalk 1 according to the present embodiment, which is constructed on the side surface of the structure 10 through the above-described process, can secure a delivery space for a pedestrian to walk safely.

In addition, the vibration energy is rapidly attenuated when the vibration energy generated by the vehicle passing through the earthquake or the structure is transmitted through the vibration reduction means (4) provided on the base bracket (2).

That is, when the vibration due to the vehicle passing through the earthquake or the structure 10 is transmitted to the base bracket 2 and the shaking occurs, the circular rolling body 41 idles and rotates in the upper part of the circular rolling body 41 As the rectangular steel 31 performs rolling motion through linear reciprocating movement, the vibration load transmitted is minimized.

Thus, the vibration amount of the expanded sidewalk 1 is more quickly attenuated, thereby ensuring the safety of walking.

7 to 9 are views showing another example of the vibration reducing means 4 constituting the assembled expansion-type walkway 1 of the seismic and vibration-reduction type according to the present embodiment, wherein the vibration reducing means 4 comprises: A pair of fixing brackets 42 fixedly arranged on the upper surface of the upper flange 22 in the longitudinal direction of the circular rolling body and spaced apart from each other and fixed to the circular rolling body 41 so as to be linearly movable, And a pair of elastic members 43 adapted to apply an elastic force to the circular rolling bodies 41 in the longitudinal direction between the fixing brackets 42 in both directions.

That is, when vibration due to the earthquake or vehicle passing through the structure 10 is transmitted to the circular rolling body 41 elastically fixed by the elastic body 43, the longitudinal direction of the circular rolling body 41 So that the vibration amount is damped.

Thus, the amount of vibration applied to the circular rolling body 41 is damped more quickly, thereby ensuring safety in walking.

The circular rolling bodies 41 are provided with a flange 411 disposed through the fixing brackets 42 and resiliently urged by the elastic body 43 in the longitudinal direction, And a cylindrical body 414 axially fixed to the outer circumferential surface of the mandrel 412 through a bearing 413 so as to idle.

That is, the vibration load is not directly transmitted to the cylindrical body 414 contacting the lower portion of the walking means 3, so that the idle motion can be stably performed, and structural stability can be further realized.

It will be apparent to those skilled in the art that various modifications and equivalent arrangements may be made therein without departing from the scope of the present invention as defined by the appended claims and their equivalents. . Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

1: Extension sidewalk 10: Structure
2: Base bracket 21: Anchor bolt
22: upper flange 23: vertical flange
24: side flange 25: fixed frame
3: walking means 31: rectangular steel
32: Flooring material 33:
34: stop projection 4: vibration reduction means
41: circular cloud body 411: flange flange
412: mandrel 413: bearing
414: Cylinder body 42: Fixing bracket
43: elastomer

Claims (1)

A base bracket 2 extending to the outside of the structure 10; A plurality of rectangular steel plates 31 installed at the upper portion of the upper flange 22 of the base bracket 2 and spaced from each other with a length in the longitudinal direction of the structure 10, (3) having a floor member (32) which is installed on an upper part of the floor and is made of a plate in the shape of a 'plate' and intended for users to walk; (41) provided on an upper flange (22) of the base bracket (2) and having an upper end rotatably engaged with a lower portion of the walking means (3) 4); a seismic and vibration reducing type prefabricated expanded sidewalk (1) comprising:
The vibration reduction means (4)
And a pair of fixed brackets (41, 42, 43) fixedly arranged on the upper surface of the upper flange (22) in the longitudinal direction of the circular rolling body (41) 42) and a pair of elastic members (43) adapted to apply an elastic force to the circular rolling bodies (41) in the longitudinal direction between the fixing brackets (42) in both lateral directions, respectively;
The circular cloud body (41)
A mandrel 412 which is disposed through the fixing brackets 42 and has flange flanges 411 which are elastically urged by the elastic body 43 in the longitudinal direction of the mandrel 412, And a cylindrical body (414) axially fixed via a bearing (413) so as to idle.

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