KR102057323B1 - Attached or mounted extended footbridge - Google Patents

Abstract

The present invention relates to an attached or mounted expansion type footbridge and, more specifically, to an expansion type footbridge, capable of being selectively used as an attached structure or a mounted structure by using a sub girder (130) of an asymmetric shape. The expansion type footbridge can stably maintain a connection structure by reducing negative moment of the sub girder (130) by using a reinforcing member (160). Also, the expansion type footbridge can reduce vibration and impact as a rubber coating material is applied to the surface of a beam (140). To achieve the purpose of the present invention, the attached or mounted expansion type footbridge comprises: a base plate (110) attached to a side of a bridge (200); a main girder (120) vertically installed in the base plate (110) to be extended in a lateral direction of the bridge (200); the sub girder (130) comprising a first connection unit (131) and an insertion unit (132) and connected to the main girder (120) as the first connection unit (131) is installed in a support unit (121) in the direction in which the insertion unit (132) is inserted or is not inserted into the support unit (121), wherein the first connection unit (131) has the width capable of being mounted on the support unit (121) and the insertion unit (132) is formed in the first connection unit (131); the multiple beams (140) installed in the vertical direction of the sub girder (130) on the upper surface of the multiple sub girders (130); and a bottom plate (150) vertically installed on the upper surface of the beam (140).

Description

Attached or mounted extended footbridge {ATTACHED OR MOUNTED EXTENDED FOOTBRIDGE}

The present invention relates to an attachable or mounted extended footbridge, and more particularly, by using an asymmetrical subgirder, it is possible to selectively use the attached or mounted structure according to the conditions of the construction site, and through the reinforcement of the subgirder Bonding or mounting type to prevent the transmission of vibration and shock to the bottom plate located on the upper side by applying the rubber coating agent on the surface of the joist, by holding the parent moment, and the bonding structure can be stably maintained even when the load is applied. It is about extended footbridge.

A bridge refers to a structure that is installed across rivers, lakes, rivers, streams, valleys, and the like so that the vehicle can travel. The bridge may be constructed by various construction methods depending on the purpose and characteristics of the installation site. .

Such bridges may be provided with sidewalks for the passage of vehicles as well as for general pedestrians. Sidewalks in bridges are constructed with railings with edges secured.

If the roadway is wide on the bridge where the sidewalk is installed, it is possible to separate the roadway and sidewalk for safety.However, if the roadway is not wide enough, the railings are installed at the edge of the roadway. This becomes unclear and there is a problem that a safety accident can occur.

In order to solve this problem, it is necessary to remove and reconstruct the existing bridge without separation because the road and the road are not separated, but in this case, it is inefficient because excessive cost and time are incurred.

In recent years, a method of constructing an extended footbridge by separately installing sidewalks on the side of an existing bridge has been proposed.

Extended footbridges include attached footbridges that are attached to the side of the bridge depending on the site, and mounted footbridges that are installed on the top of the bridge.

In a situation where a part of the subgirder cannot be fastened with anchor bolts on the upper surface of the bridge, an attached footbridge can be applied to the side of the bridge to fix it with anchor bolts. In environments where bolting may be possible, a footbridge may be applied.

However, in the construction site, due to the unexpected terrain and features, it is sometimes necessary to change the installation to a stationary or attached type unlike the existing construction plan, and the member applied to the stationary type and the member applied to the attached type are different. This results in a longer material preparation process and delays in working time.

As such, there is a problem in that the structure is complicated and the workability is degraded according to the installed characteristics, and vibration and shock are generated due to the vehicle passing through the bridge, and the vibration and shock are transmitted to the bottom plate as it is.

In addition, there is a problem that the load is generated on the side of the edge of the bridge bridge, and because of this, the portion that is fastened to the bridge structure is a force to the upper side to loosen the bolts, the coupling force can be lowered.

Republic of Korea Patent No. 10-1625488 (2016.05.24)

The present invention is to solve the above problems, it is an object of the present invention to provide an extended footbridge that can be selectively installed in a fixed or attached structure using a subgirder having an asymmetrical shape.

In addition, another object of the present invention, it is possible to absorb the vibration and shock generated between the joist and the bottom plate, the attachment or mounting type that can maintain the stable coupling structure even under load by holding the parent of the sub-girder To provide extended footbridge.

In addition, another object of the present invention, to prevent the sagging of the chemical anchor and the overflow of the chemical liquid to provide an attached or mounted expansion type footbridge that can maintain a stable engagement with the bridge.

According to a feature of the present invention for achieving the object as described above, the present invention is attached to the side of the bridge by being attached to the bridge when the chemical anchor is passed through the coupling hole is formed is inserted into the coupling hole A base plate; A main girder vertically mounted to the base plate to have a support portion of a └ 부를 type consisting of a horizontal plate and a pair of vertical plates disposed vertically at both ends of the horizontal plate and extending laterally of the bridge; The first coupling part has a first coupling part having a width that can be seated on the support part, and an insertion part formed on the first coupling part to be inserted into the support part. A sub girder coupled to the main girder by being mounted to the support unit; a plurality of joists installed in a vertical direction of the sub girder on upper surfaces of the plurality of sub girders; And a bottom plate disposed perpendicular to the upper surface of the joist. It is made, including.

And a pair of seating portions formed at both ends of the support portion to extend in the vertical direction to seat the first coupling portion, and the subgirder is formed to be spaced apart from the first coupling portion and to be inserted into the support portion. Further comprising a second coupling portion having a smaller width than the support portion, wherein the sub-girder is formed in a direction in which the second coupling portion is inserted into the support portion is attached to the main girder, or arranged in a direction not inserted into the support portion, It is mounted on the upper surface of the bridge.

In addition, the first bent surface is inserted into the support portion of the main girder, the first bent surface is formed to be fastened to one side of the main girder, and bent from the first bent surface, the first coupling portion or the second coupling portion A second bending surface having a plurality of second fastening holes formed therein so as to be fastened with the second bending surface, and a third fastening hole formed at a position corresponding to the first fastening hole to be fastened to the other side surface of the main girder Reinforcement member comprising a bent surface is characterized in that it is further provided.

The reinforcing member further includes a bolt guide part disposed between the first fastening hole and the second fastening hole and configured to have a rod shape having an inner space to allow the insertion of the bolt.

In addition, the bridge is formed with a fastening groove into which the chemical anchor is inserted, a first hole is formed to be inserted into the outer circumferential surface of the chemical anchor, and has a larger diameter than the fastening groove, and a cover portion positioned outside the bridge; An anchor block extending from the cover in the longitudinal direction and inserted into the coupling groove and including a plurality of protrusions protruding toward the inner circumferential surface side of the coupling groove may be further provided.

And it is preferable to form a coating layer by applying a rubber coating agent on the upper surface of the joist in contact with the bottom plate to absorb vibration and shock.

According to the extended footbridge according to the present invention, by using asymmetrical sub-girder, by applying the sub-girder in the vertical direction in accordance with the conditions of the construction site, there is an effect that can be selectively utilized as a mounting or mounting structure.

In addition, according to the present invention, since the rigidity is increased through the reinforcing member coupled to the side of the main girder and the portion to which the sub girder is connected, when the load is applied to the edge side, by holding the parent of the sub girder to secure the coupling structure There is a sustainable advantage.

Further, according to the present invention, the reinforcing member is provided with a bolt guide portion, guides the position where the bolt is inserted between the first fastening hole and the second fastening hole formed to be spaced apart from each other to facilitate the fastening of the bolt fastening workability to improve There is strength to install.

In addition, according to the present invention, the rubber coating agent is applied to the surface of the joist to form a coating layer, there is an advantage that can reduce the vibration and impact between the joist and the bottom plate.

In addition, according to the present invention, by inserting the chemical anchor with the anchor block into the bridge, the base liquid can be stably attached to the bridge by preventing the chemical liquid from overflowing or sagging due to the action of the load. It works.

1 is a perspective view showing Embodiment 1 of an extended footbridge according to the present invention;
2 is a cross-sectional view showing a section AA ′ of the first embodiment according to the present invention;
3 is a perspective view showing a reinforcing member according to Embodiment 1 of the present invention;
4 is a cross-sectional view showing a cross-sectional view taken along line BB ′ of FIG. 2 according to Embodiment 1 of the present invention;
5 is a view showing an application direction of the force according to the first embodiment of the present invention,
6 is a perspective view of an anchor block according to Embodiment 1 of the present invention;
7 is a cross-sectional view showing an installation state of the anchor block according to the first embodiment of the present invention;
8 is a side view showing a coating layer according to Example 1 of the present invention;
9 is a perspective view showing a second embodiment according to the present invention;
10 is a cross-sectional view showing a section CC ′ of the second embodiment according to the present invention;
FIG. 11 is a cross-sectional view taken along line DD ′ of FIG. 11 according to Embodiment 2 of the present invention.

Hereinafter, the attached or mounted extended footbridge according to the present invention will be described in detail together with the accompanying drawings.

Example 1

First, Example 1 of the extended footbridge according to the present invention will be described.

1 is a perspective view showing a first embodiment of the extended footbridge according to the present invention, Figure 2 is a cross-sectional view showing a cross-section AA 'of Example 1 according to the present invention, Figure 3 is a reinforcement according to Example 1 according to the present invention Figure 4 is a perspective view of the member, Figure 4 is a cross-sectional view showing a cross-sectional view BB 'of Figure 2 according to a first embodiment of the present invention, Figure 5 is a view showing the direction of application of the force according to a first embodiment of the present invention, Figure 6 Is a perspective view of an anchor block according to a first embodiment of the present invention, Figure 7 is a cross-sectional view showing an installation state of the anchor block according to a first embodiment of the present invention, Figure 7 is a coating layer according to a first embodiment of the present invention It is a side view shown.

As shown in Figures 1 to 8, the present invention relates to the first embodiment of the attached or mounted extended footbridge installed on the bridge, and utilizes a sub-girder 130 made of asymmetrical shape consisting of different widths up and down It is possible to use a single material up and down inverted, so that it is possible to apply a stationary or attached footbridge selectively.In Example 1, the subgirder 130 is made of an attachable structure and has an extended footbridge that can stably maintain a coupled state. present.

To this end, the extended footbridge 100 according to the present invention is installed to be extended for safe walking of a pedestrian on the side of an existing bridge 200 structure, and is basically a base plate 110, a main girder 120, and a subgirder. It comprises 130, the joist 140, the bottom plate 150.

The base plate 110 is formed by a plurality of coupling holes 111 are inserted into the chemical anchor (C) is mounted on the bridge 200 while the chemical anchor (C) is passed through the coupling hole 111 It is attached to the side of the bridge (200).

Here, the bridge 200 has a fastening groove 201 is formed in the number corresponding to the position corresponding to the coupling hole 111, the chemical anchor (C) is inserted into the fastening groove 201 is fastened. The bridge 200 and the base plate 110 are combined.

And the main girder 120 has a '└┘' type support portion 121 consisting of a horizontal plate 121b and a pair of vertical plates 121a disposed in the vertical direction at both ends of the horizontal plate 121b. It is mounted perpendicular to the base plate 110 so as to extend in the lateral direction of the bridge (200).

At this time, the main girder 120 and the base plate 110 may be welded and combined.

And the main girder 120 is spaced at regular intervals on the side of the bridge 200 is installed a plurality.

In addition, the sub girder 130 is coupled to the upper surface of the main girder 120, including a first coupling portion 131 and the insertion portion 132 formed in the first coupling portion 131.

The first coupling portion 131 has a width larger than that of the support portion 121 and has a width that can be seated on the support portion 121.

In addition, the insertion portion 132 is formed to extend in the vertical direction from the center of the first coupling portion 131 to be inserted into the support portion 121.

Here, the insertion part 132 is formed in the direction in which the support part 121 is inserted, and the sub girder 130 is attached to the main girder 120 while the first coupling part 131 is mounted to the support part 121. It is coupled while being attached, through which the sub-girder 130 is attached to the side of the bridge 200.

The sub-girder 130 is formed to be spaced apart from the first coupling portion 131 and extends in both vertical directions from the insertion portion 132 and is inserted into the support portion 121 than the support portion 121. It further comprises a second coupling portion 133 made of a small width is made of an H beam having an asymmetric structure up and down.

That is, since the sub-girder 130 has an asymmetrical shape having different widths up and down, the sub-girder 130 has a feature that can be selectively used by inverting in the vertical direction depending on the conditions of the installation site.

In addition, both ends of the support part 121 is further provided with a pair of seating portions 122 extending in the vertical direction to seat the first coupling portion 131.

Here, the insertion portion 132 and the second coupling portion 133 are inserted into the support portion 121 and the first coupling portion 131 is seated on the seating portion 122, the main girder 120 It may be made of a structure to be attached.

The joists 140 are installed on the upper surface of the plurality of sub girders 130 in the vertical direction of the sub girders 130, wherein the joists 140 is preferably made of a square pipe-shaped square tube It is not limited.

The bottom plate 150 may be disposed perpendicular to the top surface of the joist 140, and the bottom plate 150 may be made of wood plywood or plastic.

In addition, the handrail (B) may be disposed on the edge side of the bottom plate 150 to prevent the pedestrian from falling and to walk safely.

In addition, the extended footbridge 100 according to the present invention may be further equipped with a reinforcing member 160 that functions to increase the upward moment and rigidity in the portion where the side of the main girder 120 and the sub girder 130 is connected. .

The reinforcing member 160 is inserted into the inner space of the support portion 121 provided in the main girder 120, the first bent surface 161, the second bent surface 162 and as shown in FIG. It consists of an angle of a "┏┓" shape including the third bent surface 163.

The first bent surface 161 is formed with a first fastening hole 161a to be fastened to one side of the main girder 120, and the second bent surface 162 is bent from the first bent surface 161. A plurality of second fastening holes 162a are formed to be fastened to the second coupling part 133 inserted into the inner space of the support part 121.

The third bent surface 163 is bent from the second bent surface 162 and is formed at a position corresponding to the first fastening hole 161a to be fastened to the other side of the main girder 120. The fastening hole 163a is formed.

As shown in FIG. 4, the first bent surface 161 and the third bent surface 163 disposed on the side surface of the reinforcing member 160 are a pair of vertical plates provided in the main girder 120 ( 121a) and the bolts are fastened to each other, and the second bent surface 162 disposed on the reinforcing member 160 is bolted to the second coupling part 133 through the second fastening hole 162a. Are combined.

As shown in FIG. 5, when a load is applied to the edge side of the extended bridge 100, the portion of the extended bridge 100 and the bridge 200 coupled to the force is generated upward.

At this time, the reinforcing member 160 is coupled to the side portion of the main girder 120 and the sub-girder 130 is connected to serve as a reinforcing rod to reduce the parent of the sub-girder 130 and increase the rigidity Stability can be improved by maintaining a stable bonding structure even under the action of.

In addition, the reinforcing member 160 is disposed between the first fastening hole (161a) and the second fastening hole (162a) and made of a rod shape having an internal space to allow the insertion of the bolt guide to guide the fastening position The unit 164 is further provided.

The bolt guide part 164 is formed so as to pass through the screw rod while connecting between the first fastening hole (161a) and the second fastening hole (162a) formed to be spaced apart from each other, so The first fastening hole 161a is inserted into the second fastening hole 162a or the second fastening hole 162a is inserted into the first fastening hole 161a to guide the position.

Through the bolt guide portion 164, the reinforcing member 160 can be quickly installed on the side of the main girder 120 and the sub girder 130 has the effect of improving workability.

In addition, the extended footbridge 100 according to the present invention, as shown in Figure 6 to 7, when the chemical anchor (C) is inserted into the side of the bridge 200 to attach the base plate 110, An anchor block 170 may be further provided.

The bridge 200 is formed with a fastening groove 201 through which the chemical anchor C is inserted to attach the base plate 110.

Then, after the injection liquid is injected into the fastening groove 201, the chemical anchor C on which the anchor block 170 is mounted is inserted. The anchor block 170 includes a cover 171 and a plurality of bodies. It comprises a portion 172.

The cover part 171 is formed on the outer circumferential surface of the chemical anchor (C) has a first hole (171a) is formed and made of a larger diameter than the fastening groove 201 is located outside the bridge (200).

The body portion 172 extends in the longitudinal direction from the cover portion 171, and includes a protrusion 172a inserted into the coupling groove 201 and protruding toward an inner circumferential surface of the coupling groove 201.

The protrusion 172a formed on the body portion 172 is fixed while being in close contact with the inner circumferential surface side of the fastening groove 201, thereby preventing the injection liquid from flowing out.

The anchor block 170 may prevent a phenomenon that the injection liquid may flow out when the chemical anchor (C) is inserted after the injection liquid is injected into the fastening groove 201, and thus the fastening groove ( 201) to fill the injection liquid and to stably fix the position of the chemical anchor (C) to prevent sagging of the chemical anchor (C).

In addition, as shown in FIG. 8, the bottom plate 150 and the joist 140 are coated on a top surface of the joist 140 in contact with the bottom plate 150 by applying a rubber coating to absorb vibration and impact. It is possible to form a coating layer 141 that can reduce the vibration and impact therebetween.

Through the coating layer 141, there is an effect that can minimize the phenomenon that the vibration and shock generated due to the load applied to the extended footbridge 100 to the bottom layer.

Example 2

Next, the second embodiment of the extended footbridge 100 according to the present invention. In the present embodiment, the same reference numerals are used for the components corresponding to the first embodiment.

9 is a perspective view showing a second embodiment according to the present invention, FIG. 10 is a cross-sectional view showing a cross-sectional view taken along line CC ′ of the second embodiment according to the present invention, and FIG. 11 is a DD ′ of FIG. 11 according to a second embodiment of the present invention. It is sectional drawing which shows the cross section.

Embodiment 2 includes the first embodiment, and as shown in FIGS. 9 to 11, by placing the sub-girder 130 by rotating 180 degrees based on the first embodiment, the stationary extended footbridge 100 having a stationary structure. ).

The subgirder 130 is formed in the first coupling part 131 having a width that can be seated on the support part 121 and a width that can be inserted into the support part 121. It includes an insertion portion 132 and the second coupling portion 133 is formed spaced apart from the first coupling portion 131, the second coupling portion 133 having a smaller width than the support portion 121 to be inserted into the support portion 121. .

In the second embodiment, the insertion part 132 and the second coupling part 133 are formed in a direction not inserted into the support part 121, so that the first coupling part 131 is mounted to the support part 121, and part of the insertion part 132 and the second coupling part 133 are not inserted into the support part 121. It is coupled to the main girder 120 in a structure that is mounted on the upper surface of the bridge.

That is, as shown in FIG. 11, the first coupling part 131 is seated on the seating part 122, and the second coupling part 133 is not inserted into the support part 121. It is disposed in the upper direction of the portion 131 is composed of a stationary expansion type footbridge 100.

In this case, the second bent surface 162 provided in the reinforcing member 160 is coupled to the first coupling part 131, and the first bent surface 161 and the third bent surface 163 are the first embodiment. In the same manner as in the vertical plate 121a.

As such, the subgirder 130 is made of an asymmetrical shape of up and down inversion, and as a single subgirder 130, the attachable extension footbridge 100 as in Example 1 or the stationary extension footbridge 100 as in Example 2 Because it can be used both, it can be installed directly in the structure suitable for the site without interference on the unexpected terrain and features at the construction site has the effect of excellent utilization and workability.

The rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and those skilled in the art can make various modifications and adaptations within the scope of the claims. It is self-evident.

100: extended footbridge 110: base plate
111: coupling hole 120: main girder
121: support portion 121a: vertical plate
121b: horizontal plate 122: seating portion
130: sub-girder 131: first coupling portion
132: insertion portion 133: second coupling portion
140: joist 141: coating layer
150: bottom plate 160: reinforcing member
161: first bending surface 161a: the first fastening
162: second bending surface 162a: second fastening
163: 3rd bending surface 163a: 3rd fastening
164: bolt guide portion 170: anchor block
171: cover portion 171a: first hole
172: body portion 172a: projection
200: bridge 201: fastening groove
B: handrail C: chemical anchor

Claims (6)

When the chemical anchor (C) is inserted into the coupling hole 111 is inserted into the chemical hole (C) is formed is attached to the side of the bridge 200 by being mounted on the bridge 200 A base plate 110;
Lateral direction of the bridge 200 having a '└121' type support portion 121 consisting of a horizontal plate 121b and a pair of vertical plates 121a disposed vertically at both ends of the horizontal plate 121b. A main girder 120 mounted perpendicular to the base plate 110 so as to extend toward the base plate;
The insertion part (1) comprises a first coupling part 131 having a width that can be seated on the support part 121 and an insertion part 132 formed in the first coupling part 131 to be inserted into the support part 121. Sub-girder 130 is coupled to the main girder 120 by the first coupling portion 131 is mounted to the support portion 121 in the direction in which the 132 is inserted into the support portion 121 or not inserted into the support portion 121. ;
A plurality of joists 140 installed on the upper surfaces of the plurality of sub girders 130 in the vertical direction of the sub girders 130; And
A bottom plate 150 disposed perpendicular to the top surface of the joist 140; Attached or mounted extended footbridge consisting of.
The method of claim 1,
Both ends of the support part 121 is further provided with a pair of seating portions 122 extending in the vertical direction to seat the first coupling portion 131,
The subgirder 130 further includes a second coupling part 133 formed to be spaced apart from the first coupling part 131, and having a width smaller than that of the support part 121 so as to be inserted into the support part 121. and,
The sub girder 130 is formed in a direction in which the second coupling part 133 is inserted into the support part 121 and is attached to the main girder 120 or disposed in a direction not inserted into the support part 121. Attached or mounted extended footbridge, characterized in that a portion is mounted on the upper surface of the bridge (200).
The method of claim 2,
A first bent surface 161 inserted into the support part 121 of the main girder 120 and having a first fastening hole 161 a formed to be fastened to one side of the main girder 120 and the first bent surface; The second bending surface 162, the second bending surface 162 is formed from a plurality of second fastening holes 162a to be coupled to the first coupling portion 131 or the second coupling portion 133 to be bent from the (161) The third bending surface 163 is formed by bending from 162 but the third fastening hole 163a is formed at a position corresponding to the first fastening hole 161a to be fastened to the other side of the main girder 120. Attached or mounted extended footbridge, characterized in that is further provided comprising a reinforcing member (160).
The method of claim 3,
The reinforcing member 160,
It is disposed between the first fastening hole (161a) and the second fastening hole (162a) and made of a rod-shaped having an internal space to allow the bolt insertion is further provided with a bolt guide portion 164 to guide the fastening position Attached or mounted extended footbridge.
The method of claim 1,
The bridge 200 is formed with a fastening groove 201 is inserted into the chemical anchor (C),
A first hole 171a is formed on the outer circumferential surface of the chemical anchor C and has a diameter larger than that of the fastening groove 201 and is disposed on the outside of the bridge 200 and the cover. Anchor block extending from the portion 171 in the longitudinal direction, including a plurality of body portion 172 including a projection 172a is inserted into the fastening groove 201 and protruded toward the inner peripheral surface side of the fastening groove 201. Attached or mounted extended footbridge, characterized in that it further comprises (170).
The method of claim 1,
On the upper surface of the joist 140 in contact with the bottom plate 150,
Attached or mounted extended footbridge, characterized in that to form a coating layer 141 by applying a rubber coating to absorb vibration and shock.

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