KR102336024B1 - Footbridge and road bridge construction method using pier girder with upward reinforcement rib - Google Patents

Abstract

The present invention provides a footbridge and road bridge construction method using a girder for a pier having an upward reinforcing rib, which reduces effects of wind load, facilitates installation of a deck panel by using a deck panel fix support, reduces a construction period by placing concrete for a floor slab while supporting a mold by the upward reinforcing rib, and allows a safe bridge construction. The footbridge construction method using a girder for a pier having an upward reinforcing rib according to the present invention comprises the following steps of: manufacturing the girder for the pier, consisting of a girder main body made of precast concrete and the deck panel fix support installed on an upper surface of each upward reinforcing rib for installing the deck panel; mounting the girder for the pier on a coping unit installed on top of a post; and putting the deck panel on an upper surface of the girder for the pier and fixing the deck panel on the deck panel fix support. The girder main body comprises: a girder floor plate; a girder mounting block which protrudes from opposite ends of the girder floor plate; a plurality of upward reinforcing ribs which protrudes from the girder floor plate at a regular interval; a rib groove which is concavely recessed to one side by the upward reinforcing rib; and a plurality of joint shearing bars which are embedded in the upward reinforcing ribs and protrude from the girder mounting block.

Description

Construction method of footbridge and road bridge construction method using pier girder with upward reinforcement rib

The present invention relates to a method of constructing a footbridge and a footbridge, in particular, by using a girder for a pier having an upward reinforcing rib, reduces the influence of wind load, and facilitates the installation of a deck panel applied to a footbridge by using a deck panel fix holder It is possible to shorten the construction period, and by supporting the formwork through the upward reinforcement ribs, it is possible to proceed with the concrete pouring for the floor slab, so it is possible to shorten the construction period of the driveway bridge and to construct the bridge safely without worrying about the piercing girder being detached from the mounting. It relates to a construction method of a footbridge and a driveway using a girder for a pier having an upward reinforcing rib.

In general, a bridge is a structure erected on top of a road, railroad, valley, lake, coast, etc., or when crossing over other roads, railroads, waterways, houses, city areas, and the like. The girder is the main part of the bridge and corresponds to a structural member that supports the load acting on the superstructure and transmits it to the substructure (pier, abutment). In the case of a footbridge, a deck is installed on the girder, and in the case of a footbridge, PC slabs are installed on the girder or the floor concrete is poured on site. Therefore, when constructing a footbridge, the deck should be easily installed on the girder, and in the case of a footbridge, the floor slab should be easy to install. In addition, the girder for the pier should be manufactured to receive the minimum wind load because it is affected by the sea wind, strong wind, or typhoon. Conventionally, in the case of a girder for a pier, since it has a reverse rudder type cross-sectional structure, it becomes an unstable structure under wind loads and has a disadvantage in that it cannot but be vulnerable to waves. Therefore, it is required to develop a girder for a pier that can avoid the reverse rudder type cross-sectional structure.

As the background technology of the present invention, as Korean Patent Registration No. 10-2166504, 'Landing pier structure and its construction method' is proposed. This promotes diversification of column structures due to the prefabricated pile construction method that connects expansion piles after foundation pile construction. , PC pile cap, PC girder and PC slab are designed to ensure structural stability while maintaining the integrity. However, in the background art, the landing pier structure is constructed by placing the PC slab on the PC girder and then pouring the topping concrete on the PC slab. There is no proposed method for city departure.

Korean Patent Registration No. 10-2166504

The present invention can reduce the effect of wind load by using a girder for a pier having an upward reinforcement rib, and can facilitate the installation of a deck panel applied to a footbridge by using a deck panel fix fixture, thereby shortening the construction period, and increasing the reinforcement rib By supporting the formwork, pouring concrete for the floor slab can be carried out, so the construction period of the bridge can be shortened. The purpose of this is to provide a method for constructing a footbridge and driveway bridge.

A method of constructing a footbridge using a girder for a pier having an upward reinforcing rib according to an appropriate embodiment of the present invention,

A girder deck, a girder mounting block protruding upward with a certain width at both ends of the girder deck, a plurality of upward reinforcing ribs formed by protruding upwardly in parallel with a predetermined distance from each other from the girder deck, and one side by the upward reinforcing rib a girder body made of precast concrete having a concave rib trough, a plurality of horizontally embedded in the upward reinforcing rib, and a shear reinforcement joint for joint protruding a certain amount in the longitudinal direction from the girder mounting block; For the installation of the deck panel to be used in the footbridge, it is disposed on the upper surface of each of the upward reinforcing ribs and is fixed to the girder body through a plurality of anchors installed on the lower surface of the deck panel fix fixture; manufacturing a girder for a pier consisting of;

mounting the girder for the pier to the coping part installed on the top of the pile;

Putting the deck panel on the upper surface of the girder for the pier, and fixing the deck panel to the deck panel fix holder through a fix; characterized in that it is constructed including.

In addition, the deck panel fix fixture is characterized in that it is manufactured by any one of a wooden plate or a steel plate.

In addition, in order to suppress the departure of the pier girder after the pier girder is mounted, coupling the girder departure prevention pin to the locking groove of the coping part through the pinhole formed at the end of the pier girder; characterized.

In addition, in order to resist the vertical load acting on the ribs, the step of installing a mountain-type reinforcing panel or an inverted U-type reinforcing panel each having a reinforcing diaphragm in the ribs before installation of the deck panel; do it with

On the other hand, the construction method of a carriageway using a girder for a pier having an upward reinforcing rib according to another suitable embodiment of the present invention,

A girder deck, a girder mounting block protruding upward with a certain width at both ends of the girder deck, a plurality of upward reinforcing ribs formed by protruding upwardly in parallel with a predetermined distance from the girder deck, at both edges of the upper surface of the upward reinforcing rib The formed form support jaw, the rib valley recessed by the upward reinforcing ribs, the joint combined shear reinforcing bars and the upward reinforcing ribs that are embedded horizontally in the upward reinforcing ribs and protrude by a certain amount in the longitudinal direction from the girder mounting block manufacturing a girder for a pier made of precast concrete by providing an anchor for synthesizing a floor slab whose lower part is buried at a predetermined interval for each and protrudes from the upper surface of a predetermined amount of upward reinforcing rib;

mounting the girder for the pier to the coping part installed on the top of the pile;

After supporting the floor slab formwork on the form support jaw facing the adjacent upward reinforcing rib, reinforcing the slab reinforcing bar to the upper surface of the floor slab formwork;

Concrete is poured to a certain height so that slab reinforcement is embedded in the upper surface of the floor slab formwork, and the floor slab to be synthesized with the anchor for floor slab synthesis is formed on the upper part of the girder for the pier; characterized in that it is constructed.

In addition, in order to suppress the departure of the pier girder after the pier girder is mounted, coupling the girder departure prevention pin to the locking groove of the coping part through the pinhole formed at the end of the pier girder; characterized.

In addition, in order to reduce the vehicle load acting on the rib trough, the step of supporting the floor slab formwork after pre-installing a mountain-shaped reinforcing panel or an inverted U-shaped reinforcing panel on the rib trough; .

According to the method for constructing a footbridge and a carriageway using a girder for a pier having an upward reinforcing rib of the present invention, the effect of wind load can be reduced by applying a girder for a pier having an upward reinforcing rib and constructing a footbridge or a carriageway. The safety is improved by eliminating the occurrence of resistance.

In addition, it is possible to easily install the deck panel applied to the footbridge by using the deck panel fix bracket, so that the workability is improved and the construction period of the footbridge can be shortened.

In addition, by supporting the formwork through the upward reinforcing rib, it is possible to easily proceed with the concrete pouring for the floor slab, thereby shortening the construction period of the driveway.

In addition, since the girder separation prevention pin is used when the girder for the pier is installed, it is possible to construct the bridge safely without worrying about the separation of the girder for the pier.

In addition, various reinforcing members can be installed in the rib ribs existing between the upward reinforcing ribs of the girder for pier, so that the resistance to vertical load can be increased.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the present invention, so the present invention is limited to the matters described in the accompanying drawings It should not be construed as being limited.
1 is a perspective view of a girder for a pier having an upward reinforcing rib according to an embodiment of the present invention.
Figure 2 is a cross-sectional view taken along line AA of Figure 1;
Figure 3 is an exploded perspective view seen from the bottom of Figure 1;
Figure 4a is a state view mounted on the pillar during the construction process of the footbridge through the girder for the pier shown in Figure 1;
Figure 4b is a view of the installation state of the girder separation prevention pin during the construction process of the footbridge through the girder for the pier shown in Figure 1;
Figure 4c is a view of the installation state of the deck panel during the construction process of the footbridge through the girder for the pier shown in Figure 1;
Figure 4d is a view of the installation state of the mountain-type reinforcing bar during the construction process of the footbridge through the girder for the pier shown in Figure 1;
5 is a perspective view of a girder for a pier having an upward reinforcing rib according to another embodiment of the present invention.
6 is a cross-sectional view taken along line BB of FIG. 5;
Figure 7 is a state view mounted on the pillar during the construction process of the road bridge through the girder for the pier shown in Figure 5.
8 is a view of the installation state of the floor slab formwork during the construction process of the road bridge through the girder for the pier shown in FIG.
9 is a view of the construction state of the floor slab according to the concrete pouring during the construction process of the road bridge through the girder for the pier shown in FIG.
10 is an exploded perspective view of the upper type reinforcing bar from the girder for the pier shown in FIG.
11 (A) and (B) are perspective views of the upper-type reinforcing bar and the inverted U-type reinforcing bar applied to the girder for a pier of the present invention, viewed from different angles.
Figure 12a is an example of the installation of the upper type reinforcement shown in Figure 11 (A).
Figure 12b is an example of installation of the inverted U-shaped reinforcing bar shown in Figure 11 (B).

Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the presented embodiments are illustrative for a clear understanding of the present invention, and the present invention is not limited thereto.

According to the present invention, after manufacturing a girder 10 or 10a for a pier having an upward reinforcing rib 103 as shown in FIGS. 1 and 5, a footbridge is constructed as shown in FIG. 4c or as shown in FIG. A driveway bridge may be constructed. The footbridge or driveway constructed in this way has the advantage of being less affected by the wind load caused by strong winds or typhoons because the upward reinforcement rib 103 is not exposed downward as in the prior art, thereby improving the safety of the footbridge and the driveway. Excellent constructability. Other advantages are detailed in the embodiments.

<First embodiment>

The first embodiment provides a method of constructing a footbridge by manufacturing a girder 10 for a pier.

First, as shown in Figs. 1 to 3, the girder 10 for the pier includes a girder body 100 made of precast concrete; It consists of a deck panel fix holder 110 fixed to the girder body 100 .

The girder body 100 has a predetermined width at both ends of the girder bottom plate 101, the girder mounting block 102 and the girder bottom plate 101 that protrude upward with a predetermined distance from each other and parallel to each other. A plurality of upward reinforcing ribs 103 formed to protrude upward, rib valleys 104 concavely recessed to one side by the upward reinforcing ribs 103, and a plurality of horizontally embedded in the upward reinforcing ribs 103, It is provided with a joint combined shear reinforcing bar 105 protruding a certain amount in the longitudinal direction from the girder mounting block 102.

The deck panel fix fixture 110 is disposed on the upper surface of each of the upward reinforcement ribs 103 for the installation of the deck panel 30 to be used in the footbridge and is fixed to the girder body 100 through a plurality of anchors 112 installed on the lower surface. and installed Therefore, the deck panel fix fixture 110 may be installed by synthesizing the anchor 112 to the concrete during concrete pouring during the production of the girder body 100 .

Here, the deck panel fix holder 110 may be made of any one of a wooden plate or a steel plate.

As such, the girder 10 for the pier 10 is equipped with a deck panel fix holder 110, as shown in FIG. 4c, so that the fix 40 used when the deck panel 30 is installed can be easily and easily installed on the deck panel fix fixing unit 110. have an advantage.

Then, as shown in Fig. 4a, the girder 10 for the pier is mounted on the coping part 22 installed on the top of the pile 20. The coping unit 22 may be a factory-manufactured precast coping.

Here, in order to suppress the departure of the girder for the pier 10 after the girder for the pier 10 is mounted, the girder departure prevention pin 120 is installed at the end of the girder 10 for the pier 10 as shown in FIG. 4b. A process of coupling to the locking groove 22a of the coping part 22 may be included. Therefore, the construction safety of the girder 10 for the pier is improved. The locking groove 22a may have a circular or long hole shape.

Next, put the deck panel 30 on the upper surface of the girder 10 for the pier as shown in FIG. 4c , and fix the deck panel 30 to the deck panel fix holder 110 through the fix 40 . The deck panel 30 may be, for example, plywood, a metal panel, or the like, and is not limited thereto.

As described above, according to the construction method of the footbridge using the girder for the pier having the upward reinforcing rib 103 of the first embodiment, the deck panel fix holder 110 is installed on the girder 10 for the pier, so that the It can be very easy to install. That is, the fix 40 is not driven into the hard concrete layer, but directly fastened to the deck panel 30 made of plywood or installed after a simple drilling operation on the deck panel 30 made of metal, so that the installation workability will be excellent. In addition, the effect of shortening the air can be seen. In addition, in the process of installing the girder separation prevention pin 120 , there is no concern about the separation of the girder for the pier 10 , and the installation safety is improved.

In addition, since the upward reinforcing rib 103 formed on the girder 10 for the pier is not exposed downward as in the prior art, it has the advantage of being less affected by the wind load caused by strong winds or typhoons, and thus the safety of the footbridge is improved.

On the other hand, in the first embodiment, in order to resist the vertical load acting on the rib trough 104, the ridge reinforcement panel 50 is installed in the rib trough 104 before the installation of the deck panel 30 as shown in FIG. 4d. can have steps. Of course, the inverted U-shaped reinforcing panel 50a shown in FIGS. When the mountain-type reinforcement panel 50 or the inverted U-type reinforcement panel 50a is installed in this way, sagging of the deck panel 30 is prevented and the safety of the footbridge is further improved. The mountain-shaped reinforcing panel 50 and the inverted U-shaped reinforcing panel 50a have reinforcing diaphragms 501 and 501a for cross-sectional reinforcement as shown in (A) and (B) of FIG. 11, respectively.

<Second embodiment>

The second embodiment provides a method of constructing a carriageway by manufacturing the girder 10a for a pier shown in FIGS. 5 and 6 .

First, as shown in FIGS. 5 and 6 , a girder 10a for a pier made of precast concrete is manufactured. The girder for a pier 10a is a girder deck 101, a girder holding block 102 that protrudes upward with a predetermined width at both ends of the girder bottom plate 101, and is parallel with each other at a predetermined distance from the girder bottom plate 101. A plurality of upward reinforcing ribs 103 formed to protrude upwardly, the formwork support jaws 103a formed at both edges of the upper surface of the upward reinforcing ribs 103, and rib valleys 104 concavely recessed by the upward reinforcing ribs 103. ), the joint combined shear reinforcing bars 105 and the upward reinforcing ribs 103, which are horizontally embedded in a plurality of the upward reinforcing ribs 103 and protrude by a predetermined amount in the longitudinal direction from the girder mounting block 102, and the upward reinforcing ribs 103 at a predetermined interval and an anchor 106 for synthesizing the floor slab that is buried at the lower portion and protrudes from the upper surface of the reinforcing rib 103 upward by a certain amount.

Then, as shown in FIG. 7 , the girder 10a for the pier is mounted on the coping part 22 installed on the top of the pile 20 .

Here, in order to suppress the departure of the pier girder 10a after the pier girder 10a is mounted, the girder departure prevention pin 120 shown in FIG. 5 is installed at the end of the pier girder 10 pinhole (102a) The process of coupling to the locking groove 22a of the coping part 22 may be included as shown in FIG. 4B through the . Therefore, the construction safety of the girder (10a) for the pier is improved.

Next, as shown in FIG. 8 , the floor slab formwork 70 is supported on the formwork support jaws 103a and 103a facing the adjacent upward reinforcing ribs 103 and 103 .

Thereafter, the slab reinforcing bar 72 is reinforced to the upper surface of the floor slab formwork 70 as shown in FIG. 9 . The slab reinforcement 72 is reinforced in the longitudinal direction and the longitudinal direction of the girder for the pier 10a.

Here, in order to resist the vehicle load acting on the rib trough 104, the ridge-shaped reinforcing panel 50 as shown in FIG. 12a on the rib trough 104 or the inverted U-shaped reinforcing panel 50a shown in FIG. 12b. ) can be placed to support the floor slab formwork 70 after pre-installation.

When the mountain-type reinforcing panel 50 or the inverted U-type reinforcing panel 50a is installed in this way, the sagging of the floor slab 80 is prevented, and the resistance to the vertical load of the vehicle is increased, thereby further improving the safety of the pedestrian bridge.

Next, concrete is poured to a certain height as shown in FIG. 9 so that the slab reinforcing bar 72 is embedded in the upper surface of the floor slab formwork 70 . Therefore, the floor slab 80 to be synthesized with the anchor 106 for dock slab synthesis is formed on the upper part of the girder 10a for the pier.

As described above, according to the construction method of the carriageway using the girder for a pier having an upward reinforcing rib 103 of the second embodiment, the formwork support 103a is formed on the upward reinforcing rib 103 of the pier girder 10a. Because it is easy to install the floor slab formwork 70, the workability for shortening the air is excellent, and the anchor 106 for floor slab synthesis is installed on the upward reinforcement rib 103, so that the concrete synthesis force of the floor slab 80 is improved. can be raised In addition, in the installation process of the girder separation prevention pin 120, there is no concern about the separation of the girder for the pier 10a, and the installation safety is improved. In addition, since the upward reinforcing rib 103 formed on the girder 10a for the pier is not exposed downward as in the prior art, it has the advantage of being less affected by the wind load caused by strong winds or typhoons, thereby improving the safety of the road bridge. .

So far, the present invention has been described in detail with reference to the presented embodiments, but those skilled in the art can make various modifications and modified inventions without departing from the technical spirit of the present invention with reference to the presented embodiments. will be. The present invention is not limited by such variations and modifications, but only by the claims appended hereto.

10,10a: girders for piers
100: girder body
110: deck panel fix holder
30: deck panel
40: fix
120: girder departure prevention pin
50: mountain-shaped reinforcement panel
50a: inverted U-shaped reinforcement panel
70: floor slab formwork

Claims (7)

A plurality of girder bottom plates 101, girder mounting blocks 102 that protrude upward with a predetermined width at both ends of the girder bottom plates 101, and a plurality of girder bottom plates 101 that are formed to protrude upward in parallel with each other at a predetermined distance from each other. An upward reinforcement rib 103, a rib valley 104 recessed to one side by the upward reinforcement rib 103, a plurality of horizontally embedded in the upward reinforcement rib 103, a girder mounting block 102 a girder body 100 made of precast concrete and provided with joint shear reinforcing bars 105 protruding by a certain amount in the longitudinal direction; For the installation of the deck panel 30 to be used for the footbridge, it is disposed on the upper surface of each of the upward reinforcement ribs 103 and is fixed to the girder body 100 through a plurality of anchors 112 installed on the lower surface of the deck panel fix fixture ( 110); manufacturing a girder 10 for a pier consisting of;
Mounting the girder 10 for the pier on the coping part 22 installed on the top of the pile 20;
Putting the deck panel 30 on the upper surface of the girder 10 for the pier, and fixing the deck panel 30 to the deck panel fix holder 110 through the fix 40; Constructed including,
The deck panel fix holder 110 is manufactured and constructed with either a wooden plate or a steel plate,
The fix 40 is not driven into the hard concrete layer, but is directly fastened to the deck panel 30 made of plywood or installed after a simple drilling operation on the deck panel 30 made of metal, resulting in excellent installation workability. but the air is shortened,
In order to suppress the departure of the girder for the pier 10 after the girder for the pier 10 is mounted, the girder departure prevention pin 120 is inserted into the coping part ( 22) of coupling to the locking groove (22a); is further included,
The locking groove (22a) is formed in the shape of a long hole so that the position of the girder separation prevention pin 120 inserted into the pinhole 102a can be adjusted, so that the position of the girder 10 for the pier can be adjusted,
In order to resist the vertical load acting on the rib trough 104 and to prevent the deck panel 30 from sagging, a plurality of reinforcing diaphragms 501 in the rib trough 104 before installation of the deck panel 30 ) having a mountain-shaped reinforcement panel 50 is installed;

The deck panel fix fixture 110 is installed by synthesizing the anchor 112 to the concrete during concrete pouring during the production of the girder body 100,

The coping portion 22 is characterized in that the factory-manufactured precast coping,

A method of constructing a footbridge using a girder for a pier having upward reinforcement ribs. delete delete delete delete delete delete

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