KR102047343B1 - Earthquake-Resistant Reinforcing Apparatus To Enhance Earthquake-Resistance Of The Existing Bridge - Google Patents

Abstract

An earthquake-resistant reinforcing apparatus to enhance earthquake-resistance of an existing bridge comprises: a first bracket installed in a first pier of a bridge or one surface of an abutment; a second bracket installed in the first pier in which the first bracket is installed, a second pier opposite to a surface of the first pier, or a surface of the abutment; and a reinforcing beam member inserted into and coupled to the first bracket and the second bracket. According to the preset invention, the earthquake-resistant reinforcing apparatus to enhance earthquake-resistance of an existing bridge and an earthquake-resistant reinforcing method can improve earthquake-resistant performance as substitution for base reinforcement with respect to a lower structure of an existing bridge without a bridge seat is not installed to be eco-friendly and shorten a period of time. Moreover, constructability and economic feasibility can be improved.

Description

Earthquake-Resistant Reinforcing Apparatus To Enhance Earthquake-Resistance Of The Existing Bridge}

The present invention relates to an earthquake-proof reinforcement device and an earthquake-resistant reinforcement method for improving the seismic performance of an existing bridge without a bridge device.

In general, a bridge is a bridge that allows people and vehicles (including railroad cars) to cross rivers, valleys, hollow ground, streams, rivers, etc.

These bridges are basically composed of bridge decks and shifts to support them, and a plurality of bridges.These bridges are divided into steel bridges, concrete bridges, wooden bridges, stone bridges, etc., depending on the type of material used. It is divided into overpass and overpass, and according to the location of the surface, it is classified into Sangro Bridge, Jungro Bridge, Haro Bridge, and two-story bridge, and depending on the form, it is classified into Girder Bridge, Arch Bridge, Trust Bridge, Slavic Bridge, Ramen Bridge, Cable Stayed Bridge, Suspension Bridge, etc. .

On the other hand, since the bridge having the structure as described above is made of a structure in which the bridge top plate is placed on the bridge and the bridge, various attempts have been made to prevent the falling bridge top fall.

As an example, the prevention of falling bridges presented in the Republic of Korea Patent No. 10-0402954, Republic of Korea Registration No. 20-0425703, Republic of Korea Patent Registration 10-1008606 and the like to form a bracket on the bridge deck installed on the bridge deck and the bridge of the bridge It is configured to prevent the bridge deck from falling in the perpendicular direction of the bridge.

On the other hand, Republic of Korea Patent No. 10-1628086 (registered on 06. 01. 2016) to prevent the fall of the bridge deck due to earthquake by limiting the behavior of the bridge in the direction of the bridge and the direction of the bridge perpendicular to the existing bridge is not installed Disclosed is a seismic reinforcement device of an existing bridge and a seismic reinforcement method using the same. The disclosed invention installs the upper bracket on the slab of the bridge, the lower bracket is installed on the bridge pier, and the locking protrusion of the upper bracket is fitted in the seating space of the locking protrusion of the lower bracket so that the behavior of the bridge top plate is in the axial direction and the right angle of the bridge. It is to be restricted in the direction to prevent the fall of the bridge deck due to the earthquake.

In general, a bridge to which a bridge device and a shear key are applied has a structure that can prevent falling of the bridge deck. That is, the seismic load is transmitted to the substructure (alternation, pier) by the installation of the bridge device and the shear key, and the substructure (alternation, pier) is secured to the received load.

However, most of the public bridges, ie, existing bridges, that have been aged for a long time after completion, are not secured due to the lack of seismic design. Therefore, it is necessary to secure the safety by improving the safety factor by additional reinforcement work for the substructure (shift, pier). Reinforcement work to secure the stability is the basic reinforcement of the substructure, generally made of construction such as trench, section expansion and pile reinforcement.

On the other hand, the Republic of Korea Patent No. 10-1628086 invention (hereinafter referred to as 'related prior invention' ) is to provide seismic reinforcement for the existing bridge that does not reflect the seismic design, but it is insufficient to provide sufficient stability Had a limit. Therefore, as a foundation reinforcement for substructures (shifts, bridge piers), it was necessary to carry out construction such as digging, section expansion and pile reinforcement.

However, such basic reinforcement works for substructures are not environmentally friendly and in some cases increase the risk of bridges by themselves, and may be poorly constructed due to underground burial, and additional facilities (facility, water barriers, etc.) ) May be a cause of an increase in construction costs. In addition, due to underground facilities and local government immovability, it may not be possible to dig the construction, and bridges with small spaces may not be able to enter construction vehicles, so it may not be possible to carry out foundation reinforcement.

Accordingly, the present invention is to solve the above problems. That is, the object of the present invention is not only environmentally friendly as an alternative to the above-described basic reinforcement of the substructure, but also shortens the air, improves the constructability and economical efficiency, and improves the seismic performance of the existing bridge without a bridge device. It is to provide a reinforcement device and a seismic reinforcement method.

Seismic reinforcement device for improving the seismic performance of the existing bridge according to the present invention for achieving the above object is a first bracket installed on one side of the bridge or the first pier of the bridge, the first pier is installed Or a second bracket installed on a second pier or an alternating surface facing the alternating surface, and a reinforcing beam member fitted to and coupled to the first bracket and the second bracket.

In the above, the first and second brackets are pier coupling plate for coupling to the corresponding surface of the bridge or the bridge of the bridge, respectively, the structure protruding in the axial direction from the bridge coupling plate to the upper direction by engaging with the bridge coupling plate Except for the bottom protrusion plate forming the bottom and both sides of the reinforcing beam member insertion groove, three protrusion plates consisting of the first side protrusion plate and the second side protrusion plate, the pier coupling plate and the A cushioning material coupled to at least one of the three protruding plates, and a reinforcing member simultaneously coupled to each of the bottom protrusion plate, the first side protrusion plate and the second side protrusion plate and the pier coupling plate outside the reinforcing beam member insertion groove. And a plate, wherein the reinforcing beam member is inserted into and coupled to the reinforcing beam member insertion groove of the first bracket and the second bracket at the same time.

The reinforcing beam member is preferably made of a pipe structure whose cross section is circular or square or rectangular, and a reinforcing portion is formed in a + shape inside the circular, square or rectangular.

A connecting pin insertion hole is formed in the first side protrusion plate and the second side protrusion plate in the reinforcing beam member insertion groove, and the reinforcing beam member is inserted into the reinforcing beam member insertion groove. And a connection pin insertion hole corresponding to the connection pin insertion hole formed in the second side protruding plate, wherein each of the first and second brackets and the reinforcing beam member are connected to each other by inserting the connection pin into the connection pin insertion hole. In this case, the reinforcing beam member is preferably coupled to be movable within the limit of the area deviating from the space occupied by the connection pin in the connection pin insertion hole in the state that the connection pin is inserted into the connection pin insertion hole. .

The pier coupling plate has a plurality of anchor bolt holes, the anchor bolt is penetrated through the anchor bolt hole and then inserted into the pier, the pier coupling plate is to be bonded to the pier, in this case, through the anchor bolt hole The anchor bolt coupled to the pier has a mechanical fixing portion of the body and the inclined shape of the anchor bolt at its distal end is inserted into the pier, the diameter of the anchor bolt is such that the mechanical fixing portion is inserted After drilling the piers, it is preferable to couple the anchor bolts to the piers by inserting the anchor bolts and injecting the attachment liquid.

The seismic reinforcement device is formed in a flat form to be in contact with the slab of the bridge in the horizontal direction on the upper side is coupled to the lower portion of the upper bracket horizontal plate and the upper bracket horizontal plate containing a plurality of anchor bolt holes in the inner side An upper bracket including a locking protrusion formed to protrude downward; Coupled to both sides and the back and the bottom of the engaging protrusion of the upper bracket, a plurality of buffers, the buffer member consisting of one or more iron plate inside the plurality of buffers; And a lower bracket vertical plate made of a flat plate shape so as to be in contact with the bridge piers in a vertical direction and including a plurality of anchor bolt holes therein, and coupled to the lower bracket vertical plate and extending in a vertical direction in the axial direction. The first and second vertical plates protruding and formed at a distance from each other so as to be inserted into the engaging protrusions of the upper bracket to which the shock absorbing member is coupled, and the lower bracket vertical plates are extended in the horizontal direction and protrude in the axial direction. A first horizontal plate formed to support the lower side of the engaging protrusion of the upper bracket to which the shock absorbing member is coupled, and formed to allow the engaging protrusion of the upper bracket to be seated by the first and second vertical plates and the first horizontal plate. A locking projection seating space, a third vertical plate spaced apart from the first vertical plate and formed in parallel with the first vertical plate, and spaced apart from the second vertical plate. A second vertical plate formed parallel to the second vertical plate, and a plurality of fourth vertical plates formed between the first and third vertical plates and between the second and fourth vertical plates to counter the horizontal force generated in the first and second vertical plates. The reinforcement horizontal plate and the reinforcement horizontal plate of the uppermost layer in contact with the upper bracket of the plurality of reinforcement horizontal plate may further include a lower bracket consisting of a bolt seat groove.

The present invention provides a seismic reinforcement method for improving the seismic performance of the existing bridge. Seismic reinforcement method according to the present invention in the installation of the earthquake-resistant reinforcement device in the bridge, the coupling member coupling step of attaching a plurality of cushioning material on the left, right side, bottom and back of the engaging projection formed on the upper bracket; An upper bracket fixing step of fixing the upper bracket to the slab at the position where the bridge is formed in the bridge through an anchor bolt hole formed in the upper bracket horizontal plate of the upper bracket; A lower bracket fixing step of fixing the lower bracket through an anchor bolt hole formed in the lower bracket vertical plate of the lower bracket after the locking protrusion of the upper bracket is disposed in the locking protrusion seating space of the lower bracket on the side of the bridge; First and second bracket coupling steps of coupling the first and second brackets to the piers by passing the anchor bolts through the anchor bolt holes formed in the piers coupling plates of the first and second brackets; A reinforcing beam member insertion step of inserting the reinforcing beam member into the reinforcing beam member insertion grooves formed in the first and second brackets; And a connecting pin insertion step of inserting the connecting pin into the connection pin insertion hole formed in the first side protrusion plate, the reinforcing beam member, and the second side protrusion plate.

The seismic reinforcement device and the seismic reinforcement method for improving the seismic performance of the existing bridge according to the present invention is not only environmentally friendly as an alternative to the basic reinforcement of the existing substructure of the bridge without a bridge device to improve the seismic performance It shortens, improves workability and economics. In other words, the present invention is to improve the seismic performance of the bridge by securing the load-bearing capacity of the structure only by simple manpower construction without foundation work (dig, cross-section, pile reinforcement) for securing the safety of the existing bridge in common.

In addition, the method to secure the safety of bridges by foundation work (demolition, section enlargement, pile reinforcement) is uncertain because the specification is not quantitative calculation of reinforcement, and it is uncertain about reinforcement effect even when using enormous construction cost due to over and under reinforcement. On the other hand, there are many disadvantages, but the reinforcement method according to the present invention can quantitatively calculate the seismic load, thereby increasing reliability with reliable reinforcement.

1 is a front view showing a schematic structure of a bridge is installed seismic reinforcement device according to the related prior invention.
FIG. 2 is a side view of the bridge of FIG. 1. FIG.
3 is an exploded perspective view of a seismic reinforcing device according to the related prior patent invention.
Figure 4 is an exploded perspective view of the seismic reinforcement device according to the related prior patent invention seen from an angle different from FIG.
FIG. 5 is an enlarged view of A of FIG. 1. FIG.
FIG. 6 is an enlarged view of B of FIG. 2.
7 is a front view showing the schematic structure of the bridge is installed seismic reinforcement device according to the present invention.
8 is a side view of the bridge of FIG. 7.
9 is an exploded perspective view of the seismic reinforcing device according to the present invention.
FIG. 10 is an enlarged view of C of FIG. 7. FIG.
FIG. 11 is a cross-sectional view illustrating a construction situation in which a pier coupling plate is fixed to a pier using an anchor bolt according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the drawings.

As shown in FIG. 7, the seismic reinforcement device of the existing bridge according to the present invention may include the seismic reinforcement device 50 defined by the related prior patent invention and the seismic reinforcement device 50 ′ which is additionally reinforced in the present invention. have. The seismic reinforcement device 50 ′ which is additionally reinforced in the present invention may be applied independently to the bridge, but is more effective when additionally reinforced in addition to the seismic reinforcement device 50 defined by the related prior patent invention.

Prior to describing the seismic reinforcement device 50 ′ for additional reinforcement in the present invention, first, the seismic reinforcement device 50 defined by the related prior patent invention will be described. This description is presented in the specification of the related prior patent, but may refer to the specification of the related prior patent, but for the convenience of the reader, the details thereof will be moved here.

The seismic reinforcement device 50 is installed on the existing bridge (1) where the bridge device is not installed to improve the seismic reinforcement according to the earthquake by limiting the behavior of the bridge top plate in the direction of the bridge and the perpendicular to the bridge.

Accordingly, the seismic reinforcement device 50 has an upper bracket 10 coupled to the slab 1a of the bridge 1 and a lower bracket coupled to the pier 1b of the bridge 1 as shown in FIGS. It consists of 30) acts to limit the behavior in the lower bracket (30) during the behavior of the bridge top plate, and the buffer member 20 is formed between the upper bracket 10 and the lower bracket 30 to cushion the action of the bridge top plate It is configured to be made.

Hereinafter, the configuration of the seismic reinforcing device 50 will be described in more detail.

1. Earthquake-proof reinforcing device

First, as shown in FIGS. 3 to 6, the upper bracket 10 is coupled to the slab 1a formed on the lower side of the bridge top plate of the existing bridge 1, and more specifically, the bridge 1b is formed. The upper bracket horizontal plate 11 is configured to be coupled to the slab 1a at the position where it is formed.

The upper bracket horizontal plate 11 is formed in a plate shape is coupled to the slab (1a) in a horizontal state, a plurality of anchor bolt holes (h) is configured on the inside of the anchor (a) is coupled to the slab (1a) It is fixed to the slab (1a) by and the nut (N).

In addition, the locking protrusion 12 is formed to protrude downward as a configuration coupled to the lower portion of the upper bracket horizontal plate (11).

Such, the projection protrusion 12 is to limit the bridge top plate when the behavior in the axial direction should be firmly coupled to the upper bracket horizontal plate (11).

In the drawings, the shape of the locking protrusion 12 is illustrated as a rectangular parallelepiped, but the shape of the locking protrusion 12 may be formed in various shapes such as polygons or circles.

Next, the buffer member 20 is the left and right side cushioning material (21, 22), the rear cushioning material (23) and the bottom buffering material to be coupled to the left, right side, back and bottom of the locking projection 12 of the upper bracket (10) 24).

Here, although each of the above-described shock absorbing material (21, 22, 23, 24) is shown in a state coupled to each other in the drawings, each of the shock absorbing material may be in a separated state.

Such, the buffer member 20 is used by temporarily bonding to the locking projections 12 of the upper bracket 10 when fitting or during the initial construction.

In particular, the iron plate (s) is formed in each of the buffer member (21, 22, 23, 24) of the above-described buffer member 20 can be configured to maintain the shape deformation and elastic force when the external force is generated, each buffer member 21, 22, 23, and 24 are illustrated in the form of a plate, but are not limited thereto and may be manufactured and used according to the shape of the locking protrusion 12.

Here, the buffer member 20 is 55 to 62% by weight of chloroprene rubber, 20 to 25% by weight carbon black, 4 to 5% by weight blended oil, 4 to 5% by weight lead oxide, BPH (2, 2 1-2 wt% of '-methylenebis (6-tert-butyl-4-methyl-phenol), 1-2 wt% of N- (1,3-dimethylbutyl) -N'phenyl--phenylene diamine, styrene-ized phenol ( Styrenated Phenol) 1 to 1.4 wt%, Polymer of 2,2,4-trimethly 1,2-dihydro quinoline (vulcanization accelerator) 0.1 to 0.5 wt%, sulfur 0.1 to 0.5 wt%, calcium carbonate 2 to 4 wt%, It consists of 0.1-0.3 weight% of vulcanizing agents, and 1-3 weight% of phosphorus flame retardants.

Here, the chloroprene rubber is a homopolymer, and most of the main chain is composed of a complete trans-1,4 structure, so that the structure regularity is very high, and thus crystallization by extension is possible. The chloroprene rubber as described above is a base material for imparting elastic force to the cushioning material. If it is less than the threshold value, the chloroprene rubber cannot impart elastic force.

In addition, carbon black is included as a filler to increase tensile strength and hardness and to improve moldability. If the carbon black is less than the threshold value, the above-described effects cannot be expected.

Next, when the blended oil is less than the threshold value as an additive for forming the flexibility and elasticity of the chloroprene rubber as a plasticizer to improve the moldability, the above-described effects cannot be expected, and when the threshold value is exceeded, the flowability becomes high and the moldability decreases. Problems will arise.

Next, lead oxide, which is a metal oxide, is used to neutralize fluoride hydride produced when vulcanized or when the vulcanizate is used at a high temperature. In general, the most commonly used oxides are magnesium oxide and zinc oxide, which are inefficient when optimum water resistance, steam resistance, and acid resistance are required, and are used to improve water resistance in the present invention.

Next, BPH (2,2'-methylenebis (6-tert-butyl-4-methyl-phenol) is a phenol group having a three-dimensional structure of alkylate bisphenol, which is very effective for vulcanization curing, and has excellent ozone resistance and cracking during vulcanization. It is effective to prevent.

Next, N- (1,3-Dimethylbutyl)-N'phenyl--phenylene diamine is effective in preventing bending resistance, oxidation, ozone cracking and freeze-thawing and is contaminated but has good degradability and good processability. In particular, there is an excellent effect in the prevention of oxidation, copper sea, bending cracks caused by ozone.

Next, styrenated phenol is a non-coloring, non-polluting anti-aging agent, which is good in heat and bending resistance and is not affected by the vulcanization accelerator and thus has little deformation.

Next, the vulcanization accelerator, Polymer of 2,2,4-trimethly-1,2-dihydro quinoline, is excellent in preventing aging due to heat, and there is no blooming phenomenon that the compounding agent exudes on the rubber surface when blending, and in particular, chloroprene rubber It will form a strong vulcanization accelerator.

Next, sulfur is used as a curing agent for vulcanization of chloroprene rubber.

Next, calcium carbonate is used as an auxiliary filler.

Next, the vulcanizing agent is used as a curing agent at the time of vulcanization of chloroprene rubber.

Next, the phosphorus-based flame retardant, which is an inorganic flame retardant, provides flame retardancy to promote safety in a fire and is not volatilized by heat unlike an organic flame retardant.

The shock absorbing member 20 formed as described above is vulcanized by inserting an iron plate s between a plurality of rubber layers during manufacture, thereby preventing deformation due to compressive force, and in particular, weather resistance, Water resistance, heat resistance, ozone resistance and flame retardancy can be imparted.

Next, the lower bracket 30 is composed of a lower bracket vertical plate 31 fixedly coupled to the side of the piers 1b of the bridge (1).

The lower bracket vertical plate 31 is formed in a plate shape and is coupled in a state perpendicular to the piers 1b, and a plurality of anchor bolt holes h are formed at an inside thereof and are coupled to the piers 1b. It is fixed to the piers 1b by and nuts (N).

In addition, the lower bracket vertical plate 31 is formed by extending in the axial direction in a state in which the first and second vertical plates 32 and 33 extend in the vertical direction.

Here, the first and second vertical plates 32 and 33 form a predetermined separation distance, more preferably, left and right sides of the locking protrusion 12 of the upper bracket 10 coupled with the buffer member 20. It is preferable to form a separation distance enough to be in contact with, and the protrusion distance is also formed to the size as long as extending in the axial direction of the locking projection (12).

That is, the above-mentioned first and second vertical plates 32 and 33 may be formed to have the same length as the length of the axial direction of the upper bracket 10 and the length of the axial direction.

In addition, a first horizontal plate 34 is formed between the first and second vertical plates 32 and 33 to support the lower side of the locking protrusion 12 of the upper bracket 10.

Therefore, in the lower bracket 30, the first and second vertical plates 32 and 33 and the first horizontal plate 34, the projection protrusion part seating space in which the locking projection 12 of the upper bracket 10 can be seated ( 35).

Here, the above-described first and second vertical plates 32 and 33 are illustrated in a plate shape, but are not limited thereto. The first and second vertical plates 32 and 33 may have the same shape as that of the locking protrusion 12 of the upper bracket 10.

In addition, one side of the first vertical plate 32, the third vertical plate 36 is formed at a distance spaced by a predetermined interval in parallel with the first vertical plate 32, the second vertical plate 33 One side of the fourth vertical plate 37 is formed at a distance spaced at a predetermined interval in parallel with the second vertical plate 33, the first, third vertical plates (32, 36) and the second, fourth number A plurality of reinforcing horizontal plates 38 are formed in the vertical direction between the direct plates 33 and 37 so as to support the first and second vertical plates 32 and 33 when the bridge upper plate moves in the perpendicular direction of the bridge axis. .

Meanwhile, a bolt seat groove 38a may be further formed in the reinforcing horizontal plate 38 disposed on the uppermost side of the reinforcing horizontal plate 38 of the lower bracket 30.

That is, since the upper bracket 10 and the lower bracket 30 are installed in contact with each other, the anchor (a) and the nut (N) used when the upper bracket 10 is fixed to the slab 1a are fixed to the lower bracket ( Interference with the reinforcing horizontal plate 38 of 30 may occur.

Therefore, the seismic reinforcement device 50 may prevent the interference by forming the bolt seat groove 38a in the reinforcement horizontal plate 38 at the position where interference may occur.

In particular, the bolt seat groove 38a described above should be formed precisely at a position that does not interfere with the anchor a of the upper bracket 10, but an error may occur due to an error in the processing of each bracket and an irregular construction surface during construction. In order to solve this problem, it is recommended to form a long hole.

2. Seismic Reinforcement Method of Existing Bridges

The seismic reinforcement method by the seismic reinforcement device 50 of the existing bridge can be carried out by the upper bracket fixing step, the cushioning member coupling step, the lower bracket fixing step to perform the seismic reinforcement of the existing bridge, the detailed embodiment of this Is as follows.

end. Buffer member joining step

In this step, the left side cushioning material 21, the right side cushioning material 22, the back buffering material 23, and the bottom buffering material 24 are respectively formed on the left, right side, back and bottom of the locking protrusion 12 of the upper bracket 10 described above. To combine.

This step may work before fixing the upper bracket 10 to the slab (1a), may be installed after installing the upper bracket 10, it may be carried out after the lower bracket fixing step.

In particular, in the case of the back buffer 23 constituting the shock absorbing member 20, the upper bracket 10 should be attached before fixing to the slab (1a), the coupling can be combined using an adhesive means at this time will be.

In addition, when fixing the left and right side cushioning material (21, 22) and the bottom buffering material 24 after fixing the upper bracket (10) to be temporarily bonded using the same adhesive means as the back buffer 24 is combined. , If installed after the fixing of the lower bracket (30) can be combined through fitting.

I. Upper Bracket Fixing Step

This step is for fixing the upper bracket 10 to the slab (1a) constituting the bridge (1).

In this step, the fixing position of the upper bracket 10 may be completed by coupling the upper bracket 10 to the upper slab 1a on which the piers 1b are formed.

That is, by selecting the position to install the upper bracket 10, the anchor bolt seating position so that the anchor bolt (a) can be coupled to the plurality of anchor bolt holes (h) formed in the upper bracket horizontal plate (11) After marking, an anchor hole h1 is formed in the slab 1a by using a punching means, and an anchor bolt a is inserted into the anchor hole h1 thus formed.

Then, the anchor bolt hole (h) of the upper bracket horizontal plate 11 of the upper bracket 10 is fitted in accordance with the anchor bolt (a) formed in the slab (1a) and then complete the fixed coupling using the nut (N). .

Such a work is to fix the upper bracket 10 in a symmetrical structure on both sides with respect to the bridge top plate, and to be carried out continuously in the direction perpendicular to the bridge (vehicle driving direction) of the bridge (1).

All. Lower Bracket Fixing Step

This step is for fixing the lower bracket 30 to the bridge (1b) of the bridge (1).

In particular, the lower bracket 30 in this step is the fixing step of the upper bracket 10 after selecting the position where the locking projection 12 of the upper bracket 10 can be seated in the locking projection seating space 35 of the lower bracket (30) After installing the anchor bolt (a) in the piers (1b) as in the nut and then anchor bolt holes (h) formed in the lower bracket vertical plate 31 of the lower bracket 30 in accordance with the anchor bolt (a) Fixing can be performed by tightening (N).

When the seismic reinforcement device 50 of the existing bridge is completed as described above, if the behavior of the bridge top plate occurs in the bridge direction or perpendicular to the bridge direction to support it to prevent falling of the bridge top plate, and thus Progressive strength can be improved.

That is, the upper bracket 10 is fixedly coupled to the slab 1a, and the lower bracket 30 is fixedly coupled to the piers 1b.

Particularly, the upper bracket 10 and the lower bracket 30 are not in a state in which they are fixedly coupled to each other, but the locking protrusion 12 of the upper bracket 10 is seated in the locking protrusion seating space 35 of the lower bracket 30. It is a state.

In this state, when the bridge plate moves in a direction perpendicular to the driving of the vehicle, the upper bracket 10 coupled to the slab 1a and the slab 1a also moves together.

Then, any one of the first and second vertical plates 32 and 33 of the lower bracket 30 coupled to the piers 1b and any one of the left and right sides of the locking protrusions 12 of the upper bracket 10. As the side abuts, it is possible to prevent the bridge top plate from moving in the vehicle driving direction.

In particular, since the above-mentioned first and second vertical plates 32 and 33 are supported by the third and fourth vertical plates 36 and 37 and the plurality of reinforcing horizontal plates 38, the behavior of the bridge deck is more reliably. By limiting, seismic reinforcement can be improved.

In addition, when the bridge top plate is made to move in the vehicle driving direction, the rear surface of the engaging protrusion 12 formed on any one of the upper brackets 10 of the upper brackets 10 formed on both sides of the bridge 1 is lower bracket ( 10) the lower bracket is in contact with the vertical plate 31 is to act to limit the behavior of the bridge top plate.

The upper bracket 10 and the lower bracket 30 can be manufactured by calculating the standardized weight according to the size of the bridge (1).

On the other hand, the buffer member 20 is formed between the above-described upper bracket 10 and the lower bracket 30 to prevent breakage of each bracket made of steel material while allowing a constant amount of deformation, while adding the elastic force buffering force By increasing the stiffness can be improved by reducing the amount of impact due to the bridge deck behavior.

In particular, the above-mentioned buffer member 20 is excellent in weather resistance, water resistance, heat resistance, ozone resistance, even if installed on the outside is not deformed by the external environment, in particular, because it is not volatilized by heat using an inorganic flame retardant to improve the flame retardancy is harsh The effect is not easily deformed even in the environment.

In addition, the above-mentioned shock absorbing member 20 may cause functional loss due to shape deformation and damage due to compressive force, but in the seismic reinforcing device 50, one in each of the shock absorbing materials 21, 22, 23, 24. By forming the above iron plate (s) it is possible to obtain the effect that can continuously perform the buffering role by preventing the elastic force due to the change in shape, breakage.

The seismic reinforcement device 50 described in the related prior patent specification provides a seismic reinforcement for an existing bridge without a bridge device and thus does not reflect the seismic design, but it is insufficient to provide sufficient stability. I had. Accordingly, the present invention is to provide an earthquake-resistant reinforcement device 50 'that additionally provides seismic reinforcement. This additional seismic reinforcement device 50 'can be installed in addition to the above-described earthquake-resistant reinforcement device 50 to more effectively improve the seismic performance for the bridge.

Hereinafter, the seismic reinforcement apparatus 50 'which concerns on this invention is demonstrated in detail.

As illustrated in FIGS. 7 and 8, the seismic reinforcement device 50 ′ according to the present invention includes a first bracket 100, a second bracket 200, and a reinforcing beam member 300. The first bracket 100 is installed on one side of the first pier 1b or the alternating portion of the bridge 1, and the second bracket 200 is the first pier 1b or alternating on which the first bracket 100 is installed. It is provided in the 2nd pier (1b) or the alternating surface which faces the surface of the. The reinforcing beam member 300 is fitted to the first bracket 100 and the second bracket 200 to be coupled.

In more detail, as shown in FIGS. 9 and 10, the first and second brackets 100 and 200 may be pier coupling plates 110 and 210, three protruding plates 120 and 220, 130 and 230, respectively. And 140 and 240, buffers 160 and 260, and reinforcing plates 170 and 270. The first and second brackets 100 and 200 have substantially the same structure. Therefore, the following description will be based on the first bracket 100.

In the first bracket 100, the pier coupling plate 110 is coupled to the first pier 1b or the alternate surface of the bridge 1. To this end, the pier coupling plate 110 is formed with a plurality of anchor bolt holes 112. The anchor bolt 500 penetrates the anchor bolt hole 112 and then is inserted into the piers 1b so that the pier coupling plate 110 is coupled to the piers 1b. In order for the anchor bolt 500 to be inserted into the pier 1b, an anchor bolt insertion groove (not shown) should be formed in the pier 1b.

At this time, the anchor bolt 500 may have a general shape, but in order to further increase the coupling force with the pier 1b, as shown in FIG. 11, the anchor bolt 500 is inserted into the pier 1b at its distal end portion. It is preferable to have the body portion 510 of the 500 and the mechanical fixing portion 520 of the inclined shape. The mechanical fixing unit 520 may be formed of one or two or more, and serves to improve the fixing force, such as an anchor.

Anchor bolt hole 112 of the pier coupling plate 110 is formed by forming an anchor bolt insertion groove by drilling the pier 1b from the side to a diameter such that the mechanical fixing unit 520 of the anchor bolt 500 is inserted. The anchor bolt 500 is coupled to the pier 1b by inserting the anchor bolt 500 and injecting the adhesive solution by matching the anchor bolt insertion groove. At this time, the anchor bolt 500 may be inserted after injecting the adhesion liquid as necessary. After injecting the adhesive solution and inserting the anchor bolt 500, the anchor bolt 500 and the pier coupling plate 110 are tightened by tightening the anchor bolt 500 with the nut 530 at the exposed end of the anchor bolt 500. Make sure it is secure. In order to more securely fix the pier coupling plate 110 by the nut 530, a reinforcing member serving as a washer may be interposed between the pier coupling plate 110 and the nut 530. When the adhesion liquid is cured in such a state, the anchor bolt 500 is firmly coupled to the piers 1b. Anchor bolt 500 is a fixing device that can be manufactured in a different size and shape according to the drilling diameter and the working load, it can be arranged by increasing or decreasing the size of the quantity and the end of the fixing end as the load increases. As such, when the pier coupling plate 110 is coupled to the pier 1b by using the anchor bolt 500 having the mechanical fixing unit 520, the fixing force of the first bracket 100 is increased to increase durability. Because of this, even after repeated earthquake load, the first bracket 100 can support the reinforcing beam member 300 well without being damaged or separated from the piers 1b.

The three protruding plates 120, 130, and 140 are coupled to the pier coupling plate 110 in a structure protruding in the axial direction from the pier coupling plate 110. At this time, the protrusion plate is not formed in the upper direction. Therefore, the three protrusion plates 120, 130, and 140 are configured of the bottom protrusion plate 120, the first side protrusion plate 130, and the second side protrusion plate 140. Thus, the reinforcing beam member insertion groove 150 is formed by three protrusion plates 120, 130, and 140.

The shock absorbing material 160 is coupled to at least one of the pier coupling plate 110 and the three protrusion plates 120, 130, and 140 in the reinforcing beam member insertion groove 150. The shock absorbing material 160 may be coupled to the pier coupling plate 110 and the three protruding plates 120, 130, and 140 in the reinforcing beam member insertion groove 150. The shock absorbing material 160 is not particularly limited as long as it is generally a material having a shock absorbing force. However, the shock absorbing material 160 is preferably the shock absorbing material 20, particularly the shock absorbing material 21, 22, 23, and 24 including the iron plate s therein. . The shock absorbing material 160 not only prevents breakage of the first bracket 100 and the reinforcing beam member 300 by the shock absorbing effect, but also exhibits a seismic force reduction effect.

The reinforcement plate 170 is simultaneously attached to each of the bottom protrusion plate 120, the first side protrusion plate 130, and the second side protrusion plate 140 and the pier coupling plate 110 from the outside of the reinforcement beam member insertion groove 150. In combination to provide reinforcement support for the protrusions 120, 130 and 140. Although the number of reinforcing plates 170 coupled to the pier coupling plate 110 and each protruding plate 120, 130 or 140 is shown in the figure, it is also possible to install three or more as necessary.

The reinforcing beam member 300 is inserted into and coupled to the reinforcing beam member insertion grooves 150 and 250 of the first bracket 100 and the second bracket 200 at the same time, and has a pipe having a circular, square or rectangular cross section. It is preferable that it consists of a structure. The reinforcing beam member 300 is more preferably in the cross-sectional shape reinforcement portion 320 is formed in a + -shape inside the reinforcement beam body portion 310 of a circular, square or rectangular. The reinforcement part 320 is preferably formed over the entire reinforcement beam body 310 having a pipe shape.

The reinforcing beam member 300 is simply inserted into the reinforcing beam member insertion grooves 150 and 250 of the first bracket 100 and the second bracket 200 simultaneously with the first bracket 100 and the second bracket 200. ) Can be combined at the same time. At this time, when the length of the reinforcing beam member 300 is properly adjusted, the piers 1b are particularly allowed during an earthquake while allowing a constant amount of deformation of the piers 1b to which the first bracket 100 and the second bracket 200 are coupled. Excessive bending in the axial direction can prevent the pier 1b itself from breaking or the top plate of the bridge 1 fall.

On the other hand, the reinforcing beam member 300 is the first bracket 100 and the second bracket just by being fitted to the reinforcing beam member insertion grooves 150 and 250 of the first bracket 100 and the second bracket 200 at the same time. The first side protrusions 130 and 230 and the second side protrusions 140 and 240 in the reinforcing beam member insertion grooves 150 and 250 may be coupled to the 200 at the same time. Connecting pin insertion holes 132 and 142 and 232 and 242 are formed. In addition, the reinforcing beam member 300 is connected to the insertion pin holes 132 and formed in the first and second side protrusions (130 and 230 and 140 and 240) in the portion to be inserted into the reinforcing beam member insertion groove (150 and 250) 142 and the connection pin insertion hole 330 corresponding to 232 and 242.

Thus, each of the first and second brackets 100 and 200 and the reinforcing beam member 300 are coupled to each other by inserting the connecting pin 400 into such connecting pin insertion holes. At this time, the reinforcing beam member 300 is moved within the limit of the area deviating from the space occupied by the connecting pin 400 in the connecting pin insertion holes in the state in which the connecting pin 400 is inserted into the connecting pin holes. Possibly combined.

This coupling of the connecting pin 400 to the connecting pin insertion holes is performed by the piers 1b to which the first bracket 100 and the second bracket 200 are coupled when the length of the reinforcing beam member 300 is properly adjusted. The bridge 1b is excessively bent especially in the direction of the bridge in the event of an earthquake while allowing a constant amount of deformation, thereby preventing the bridge 1b itself from being broken or the top plate of the bridge 1 falling, while simultaneously providing the first and second brackets 100 and 200 more securely the coupling between the steel member 300. In addition, the coupling by the connecting pin insertion holes and the connecting pin 400 is the first and second due to the accumulation of vibration generated by the constant external force acting on the bridge (1), for example, the passing of the car, etc. It serves to reduce the fatigue degree for the second bracket (100 and 200). That is, the durability to resist breakage is improved.

The seismic reinforcement device 50 'according to the present invention is installed in the pier 1b before or after the seismic reinforcement device 50 described above is installed in the slab 1a and the pier 1b of the bridge 1. do.

First, each of the first and second brackets 100 and 200 is installed in the piers 1b. Installation of the first and second brackets 100 and 200 allows the anchor bolts 500 to pass through the anchor bolt holes 112 and 212 formed in the pier coupling plates 110 and 210, and also the anchor bolts formed in the pier 1b. After the anchor bolt 500 is inserted into the insertion hole, the nut 530 may be fastened. Then, after the reinforcement beam member 300 is inserted into the reinforcement beam member insertion grooves 150 and 250, the first side protrusion plates 130 and 230, the reinforcement beam member 300, and the second side protrusion plate 140 and 240 are provided. By inserting the connecting pin 400 into the connection pin insertion holes formed in the) can be completed to install the seismic reinforcement device 50 'of the existing bridge in the bridge (1b) according to the present invention.

Thereby, the seismic reinforcement device 50 'according to the present invention is not only environmentally friendly as an alternative to the basic reinforcement for the existing substructure of the bridge without a bridge device for improving the seismic performance, and can shorten the air, In addition, construction and economics can be improved.

1: bridge 1a: slab
1b: Pier 50,50 ': Seismic retrofit of existing bridge
100,200: first and second bracket 110,210: pier coupling plate
112,212: anchor bolt hole 120,220: bottom protrusion plate
130, 230: first side protrusion plate 132, 142, 232, 242: connecting pin insertion hole
140,240: second side protrusion plate 150,250: reinforcing beam member insertion groove
160,260: shock absorber 170,270: reinforcement plate
300: reinforcement beam member 310: reinforcement beam body portion
320: reinforcement 330: connecting pin insertion hole
400: connecting pin 500: anchor bolt
510: anchor bolt body portion 520: mechanical fixing unit
530: nut

Claims (6)

A first bracket provided on one side of a first pier or alternating bridge, a second bracket provided on a side of the second pier or alternating surface facing the first pier or alternating surface on which the first bracket is installed, and the It is a seismic reinforcement device for improving the seismic performance of the existing bridge including a reinforcing beam member is coupled to the first bracket and the second bracket,
The first and second brackets reinforce except for an upper direction by engaging with the pier coupling plate in a structure that protrudes in the axial direction from the pier coupling plate and the pier coupling plate respectively engaging with the corresponding surface of the bridge pier or alternation. Three protrusions consisting of a bottom protrusion plate, a first side protrusion plate and a second side protrusion plate forming the bottom and both sides of the beam member insertion groove, the pier coupling plate and the three stones in the reinforcing beam member insertion groove A buffer member coupled to at least one of the publications, and a reinforcement plate simultaneously coupled to each of the bottom protrusion plate, the first side protrusion plate and the second side protrusion plate and the pier coupling plate outside the reinforcing beam member insertion groove. The reinforcing beam member is inserted into and coupled to the reinforcing beam member insertion groove of the first bracket and the second bracket at the same time.
A connecting pin insertion hole is formed in the first side protrusion plate and the second side protrusion plate in the reinforcing beam member insertion groove, and the reinforcing beam member is inserted into the reinforcing beam member insertion groove. And a connection pin insertion hole corresponding to the connection pin insertion hole formed in the second side protruding plate, wherein each of the first and second brackets and the reinforcing beam member are connected to each other by inserting the connection pin into the connection pin insertion hole. The reinforcing beam member is coupled to the reinforcing beam member so as to be movable within a limit of an area deviating from the space occupied by the connection pin in the connection pin insertion hole in the state where the connection pin is inserted into the connection pin insertion hole.
The seismic reinforcement device is formed in the form of a flat plate so as to be in contact with the slab of the bridge in the horizontal direction on the upper side is coupled to the lower portion of the upper bracket horizontal plate and the upper bracket horizontal plate including a plurality of anchor bolt holes in the inner side An upper bracket including a locking protrusion formed to protrude downward; A cushioning member coupled to both sides and rear and bottom surfaces of the locking protrusion of the upper bracket; And a lower bracket vertical plate made of a flat plate shape so as to be in contact with the bridge piers in a vertical direction and including a plurality of anchor bolt holes therein, and coupled to the lower bracket vertical plate but extending in a vertical direction in the axial direction. First and second vertical plates protruding and formed at a spaced distance to insert the engaging protrusions of the upper bracket to which the shock absorbing member is coupled, and are coupled to the lower bracket vertical plates and extend in the horizontal direction to protrude in the axial direction A first horizontal plate formed to support the lower side of the locking protrusion of the upper bracket to which the member is coupled, and a hook formed to allow the locking protrusion of the upper bracket to be seated by the first and second vertical plates and the first horizontal plate. Seismic reinforcement device for improving the seismic performance of the existing bridge, characterized in that it further comprises a lower bracket including a projection seating space. The method of claim 1,
The reinforcing beam member has a circular or square or rectangular cross section, and a seismic reinforcement for improving the seismic performance of the existing bridge, characterized in that consisting of a pipe structure in which the reinforcement is formed in a + shape inside the circular, square or rectangular. Device. delete The method of claim 1,
The pier coupling plate has a plurality of anchor bolt holes, the anchor bolt is penetrated through the anchor bolt hole and then inserted into the pier, the pier coupling plate is to be coupled to the pier, in this case, through the anchor bolt hole The anchor bolt coupled to the pier has a body portion of the anchor bolt and an inclined mechanical fixing part in its distal end inserted into the pier,
The seismic performance of the existing bridge, characterized in that for coupling the anchor bolt to the pier by drilling the pier to the diameter of the anchor bolt is inserted into the anchor bolt and then inserting the anchor bolt and injecting the attachment liquid Seismic reinforcement device to improve. delete delete

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