KR101976742B1 - Steel deck reinforce slab bridge and method for constructing this same - Google Patents

Abstract

The present invention relates to a steel deck reinforcement slab bridge which ensures structural stability by reinforcing a connection portion (sub-moment portion) for an upper structure through an increase in the rigidity of a lower structure, and a construction method therefor. According to the present invention, the steel deck reinforcement slab bridge comprises: a foundation portion; a lower structure (100, 200) including a concrete wall and an anchor installed in the concrete wall such that a head portion thereof protrudes therefrom; and an upper structure (300) including a lower slab reinforcement plate through which the anchor penetrates while being supported on the concrete wall of the lower structure, a composite reinforcing bar arranged on an upper portion of the lower slab reinforcement plate, and a bottom slab constructed on the lower slab reinforcement plate. The anchor includes: an anchor body (131) having a multiple steel pipe shape; and an anchor bar fixed to the anchor body and supporting the upper structure. The anchor body includes: an outer pipe; a cover plate formed in the form of a wing on the circumference of the outer pipe; at least one inner pipe inserted into the outer pipe in the form of a concentric circle; a lower blocking plate coupled to the bottom of the outer pipe; and an upper blocking cap coupled to an upper portion of the inner pipe or the outer pipe.

Description

Steel deck reinforcement slab swivel bridge and construction method {STEEL DECK REINFORCE SLAB BRIDGE AND METHOD FOR CONSTRUCTING THIS SAME}

The present invention relates to a deck slab bridge, and more particularly, the steel deck to secure structural stability by reinforcing the connection portion (sub-moment portion) with the upper structure by increasing the rigidity with an anchor formed by combining a multi-layered steel pipe to the lower structure Reinforcement slab bridge bridge and this construction method.

This section provides background information related to the present application but is not necessarily prior art.

 In general, the deck slab structure of a ramen structure (bridge, building, etc.) is composed of a slab, a wall, and a foundation, and the point where the slab and the wall are connected to each other is a ramen bridge of reinforced concrete material connected by a steel body, and the wall and the slab are connected by a steel body. As the structure is made of reinforced concrete, which is a single material, the cross section is increased to resist the load acting on the structure itself, and the increase of dead weight and the space of the bridge are reduced. Generally, slab type structures are used only for short bridges (approximately within 18M), and general structures using girders or boxes are generally used in places requiring long distances. There are many limitations when applying the structure to the site. It has been emerging.

In addition, such a ramen structure has its advantages because the structure is simple and relatively simple to construct the structure economically, but the cross section of the member such as the slab is increased to resist the load applied to the structure itself. In particular, it is impossible to smoothly distribute the force by reinforcing the cross section where the cross section force (tensile force) increases, so for example, the ramen structure can only be used only for short span structures, and the slab height is increased, thus ensuring the flood level and the passage height of the river. There was a difficult problem.

In places requiring long spans, it is necessary to reduce the bending moment of continuous slabs and to reinforce the end and center tensions.

The patent document which can confirm the background art of this invention is as follows.

Patent document 1 (registered patent No. 10-0989313, transferred to the applicant of the present invention) is composed of a bottom slab supported on the alternating portion and a connecting slab supported on the ground while being connected to the bottom slab to form a rigid synthetic slab, the alternating portion Supporting the floor slabs and connecting slabs arranged on both sides with the tension reinforcement material induces the effect of reinforcing the weak part of the ramen structure, but lacks the construction to prevent the bending deformation of the floor slab, and the alternating portion and the deck slab There is a shortage in the connection, and there is a disadvantage that the excitation and piercing of the upper surface and the lower slab reinforcement plate is not easy to close.

Patent Registration No. 10-0989313

The present invention is to solve the problems as described above, reinforcing the connection portion (sub-moment portion) with the upper structure by increasing the rigidity of the lower structure of the steel deck reinforcement slab bridge bridge and the construction to ensure structural stability The purpose is to provide a method.

Steel deck reinforcement slab bridges in accordance with the present invention, the base portion; A lower structure formed of a concrete wall and an anchor installed to protrude a head in the concrete wall, and constructed on the foundation part; An upper structure including a lower slab reinforcement plate through which the anchor penetrates while being supported on the concrete wall of the lower structure, a composite reinforcing bar arranged on top of the lower slab reinforcement plate, and a bottom slab constructed on the lower slab reinforcement plate; The anchor includes an anchor body in the form of a multi-steel pipe and an anchor bar fixed to the anchor body and supporting the upper structure, wherein the anchor body includes an outer tube and a cover plate formed in a wing shape at a circumference of the outer tube, At least one inner tube inserted concentrically into the outer tube, a lower blocking plate coupled to the bottom of the outer tube, and an upper blocking cap coupled to an upper portion of the inner tube or outer tube, around the anchor outer tube The close contact bolt is installed, characterized in that it comprises a steel rod-type anchor is installed in the inner tube when a large force is required.

According to the steel deck reinforcing slab bridge bridge and the construction method according to the present invention, the lower structure is composed of a foundation supported on the ground (or underground), concrete walls and anchors supported on the foundation to increase the rigidity and multiple Through the pipe-type anchor, it is possible to secure the optimum strength for the bridge's span and to reduce the moment, thus reducing the deflection of the upper structure, thereby improving stability, and the concrete wall is connected with the upper structure to share the load, thus deepening the pile foundation. In the case of the type, the bending moment of the pile foundation head can be reduced, and even in the case of the direct foundation type, the support layer is shallow, thereby reducing the size of the foundation base plate, thereby ensuring construction and economic efficiency.

1 is a side view showing the overall configuration of the steel deck reinforcement slab bridges in accordance with the present invention.
Figure 2 is a front view of the shift portion applied to the steel deck reinforcement slab unchanged bridge according to the present invention.
Figure 3 is a detailed view of the anchor applied to the steel deck reinforcement slab bridges in accordance with the present invention.
Figure 4 is a detailed view of the bolt anchor applied to the steel deck reinforcement slab bridges in accordance with the present invention.
Figure 5 is a detailed view of the steel bar-type anchor applied to the steel deck reinforcement slab bridges in accordance with the present invention.
Figure 6 is a perspective view showing the installation state of the lower slab reinforcement plate applied to the steel deck reinforcement slab bridges in accordance with the present invention.
Figure 7 is a view showing a connection state of the lower slab reinforcement plate and the composite reinforcing bars applied to the steel deck reinforcement slab bridges in accordance with the present invention.
Figure 8 is a perspective view showing a connection state of the lower slab reinforcement plate applied to the steel deck reinforcement slab bridges in accordance with the present invention.
Figure 9 is an exemplary view that the vertical reinforcement after the load is added to the lower slab reinforcement plate applied to the steel deck reinforcement slab bridges in accordance with the present invention.
10 is a detailed view of the connection portion of the floor slab and pavement of the steel deck reinforcement slab unchanged bridge according to the present invention.
11 is an installation state of the tension member applied when the interval of the steel deck reinforcement slab unchanged bridge according to the present invention is long.
Figure 12 is a side view showing a tension member of another form applied when the length of the steel deck reinforcement slab unchanged bridge according to the present invention is long.
Figure 13 is an alternating portion support wall and anchor installation state of the steel deck reinforcement slab unchanged bridge according to the present invention
14 is a perspective view showing an integrated anchor installation state when applying a pile pile to the alternating pile foundation applied to the steel deck reinforcement slab unchanged bridge according to the present invention.
15 is a perspective view showing the installation and longitudinal connection of the lower slab reinforcement plate of the pier anchor position applied to the steel deck reinforcement slab stiffer bridge according to the present invention.
16 to 18 is a construction process diagram of the steel deck reinforcement slab bridge bridge according to the present invention.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Terms to be described later are terms defined in consideration of functions in the present invention, and may be changed according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the specification.

As shown in FIG. 1, the steel deck reinforcement slab unchanged bridge according to the present invention includes an alternating portion 100 and a lower structure of the pier 200, and an upper structure 300 constructed on the lower structure.

The lower structure is divided into a shift part and a pier part according to a position, and consists of at least two shift parts, and one or more pier parts may be configured according to the distance.

1. Undercarriage.

The shift portion 100 is composed of a foundation portion, a concrete wall 120 and an anchor 130.

The foundation may be a pile foundation 110-1 (shown in left shift 100 of FIG. 1) and a direct foundation 110-2 (depicted in right shift 100 of FIG. 1).

The pile foundation 110-1 is constructed by drilling a pile hole in the ground and inserting the pile 111 and fixing it by grouting, and various products such as steel pipe piles, concrete piles, and synthetic piles are used.

The direct foundation 110-2 is to be constructed by concrete pouring on the ground.

Of course, as shown in FIG. 1, the pile foundation 110-1 and the direct foundation 110-2 are not necessarily used together, and only one type is used.

However, the base parts 110-1 and 10-2 are connected to the connection members (reinforcing bars, beams, and the like) embedded in the concrete wall 12 so as to be integrally synthesized with the concrete wall 120 that is constructed at the top regardless of the type of the base part. Angle). In the drawings, only the connecting member 112 protruding from the pile 111 is shown as an example.

As shown in FIG. 2, a plurality of piles 111 are provided in the alternating portion 100 in the transverse direction, and two or more rows are possible along the longitudinal direction.

The pile 111 of the pile foundation 110-1 is constructed such that the bottom is fixed in the rock, and supports the alternating portion 10 based on the rock.

Concrete wall 120 is the concrete construction on the basis of the base (110-1,110-2) and is installed by the process of installing formwork and reinforcement-concrete placement-curing.

The anchor 130 synthesizes the concrete wall 120 and the upper structure 300 integrally, and is installed as concrete pouring of the concrete wall 120. That is, by anchoring the anchor 130 to the reinforcing steel prior to the concrete casting of the concrete wall 120, and by placing the concrete anchor 130 and the concrete wall 120 together and firmly fixed them (120, 130), at this time The anchor 130 has a head (top) for connection with the upper structure 300 protrudes above the concrete wall 120.

As shown in Figure 2, a plurality of anchors 130 are installed on the concrete wall (120).

The anchor 130 is composed of a bolt body or rod-shaped anchor bars 132 and 133 fixed to the anchor structure 131 and the anchor body 131 of the multi-structure and fixed in the upper structure (300).

As shown in FIG. 3, the anchor body 131 includes an outer tube 131a, a cover plate 131b, an inner tube 131c, a lower blocking plate 131d, and an upper blocking cap 131e.

The outer tube 131a is a base of the anchor body 131 and has an open top and bottom portions, respectively.

The cover plate 131b is in the form of a ring and is fixed to the circumference of the outer tube 131a by welding or the like, and structurally prevents the anchor body 131 from being separated from the concrete wall 120 and the bolt anchor bar 132. It also functions to fix).

The inner tube 131c is inserted into the outer tube 131a with an outer diameter smaller than the inner diameter of the outer tube 131a.

Two or more inner tubes 131c are applied according to the structural calculation results, and of course, a plurality of inner tubes 131c are installed in the form of concentric circles.

The lower blocking plate 131d is inserted into the bottom of the outer tube 131a to serve as a cushion for the inner tube and the inner tube 131c.

The upper blocking cap 131e is coupled to the upper portion of the outer tube 131a to protect the foreign substance from entering until the inner tube 131c is inserted.

The lower blocking plate 131d and the upper blocking cap 131e are selected and used as necessary.

Anchor bar is to load the vertical load on the concrete wall 120 to contact the alternating and pier surface of the lower slab reinforcement plate 310, and to load the alternating and piering portion for the connection between the slab and the substructure. According to the size of the bolt-shaped anchor bar 132 (see Figure 4) and the steel bar-shaped anchor bar 133 (see Figure 5).

As shown in Figure 4, the bolt-shaped anchor bar 132 is a bolt-shaped bolt formed on the outer circumferential surface of the plurality of erected along the anchor body 131 to the periphery of the anchor body 131 and welded to load The outer socket 132a, the cover plate 132b, and the tightening nut 132c are used together.

The bolt-shaped anchor bar 132 penetrates the lower slab reinforcement plate 310 of the upper structure 300 while the circumference thereof is fixed to the outer steel pipe 131a and the bottom portion to the cover plate 131b, and the upper portion thereof is the anchor body 131. Placed higher.

The outer socket 132a is tubular and coupled to the periphery of the plurality of bolted anchor bars 132 while the bottom is supported on the top of the lower slab reinforcement plate 310 while the top supports the bottom of the cover plate 132b. .

The outer socket 132a may be formed integrally with the bolt-shaped anchor bar 132.

The cover plate 132b is formed of a plate having a hole through which a plurality of bolt-shaped anchor bars 132 pass, and the bolt-shaped anchor bar 132 penetrates and is mounted on the outer socket 132a.

The tightening nut 132c is screwed to the bolt-shaped anchor bar 132 to press the lower slab reinforcement plate 31 through the cover plate 132b and the outer socket 132a.

A separate pressing plate 132d may be applied between the cover plate 132b and the tightening nut 132c to transfer the tightening force of the tightening nut 132c to the cover plate 132b.

Therefore, the cover plate 132b is provided with one hole through which all bolt-shaped anchor bars 132 pass, and the pressure plate 132d has a plurality of holes through which each bolt-shaped anchor bar 132 penetrates. It is also possible.

Steel bar anchor bar 133 is larger than the bolt-shaped anchor bar 132 is a long diameter and is inserted into the interior of the anchor body 131, the bottom is fixed to the concrete wall 120, the upper slab reinforcement plate It is embedded in the upper structure 300 through the 310.

Steel rod-shaped anchor bar 133 is formed with a thread on the periphery (all or part) for the load.

The bottom of the steel bar-shaped anchor bar 133 may be configured to be firmly embedded in the concrete wall 120 so as not to be separated.

The steel rod-shaped anchor bar 133 is used together with the outer socket 133a, the anchor cap 133b, and the fastening nut 133c.

The outer socket 133a is tubular with an inner diameter larger than the outer diameter of the anchor body 131 and surrounds the anchor body 131 and is mounted on an upper portion of the lower slab reinforcement plate 310.

The anchor cap 133b is larger than the outer diameter of the outer socket 133a and is mounted on the outer socket 133a.

The tightening nut 133c is screwed to the rod-shaped anchor bar 133 on the anchor cap 133b to press the anchor cap 133b and the outer socket 133a.

As shown in Figure 14, when applying the concrete composite pile is inserted into the composite pile integrated anchor 370 to the upper end of the pile is a section receiving a lot of bending connected with the floor slab 330 and bolt-shaped anchor bar 132 and Press with a bolt.

As shown in FIG. 1, the pier 200 consists of a foundation 210, a concrete wall 220 and an anchor 230.

The foundation 210 may be a direct foundation shown in the figure, a pile foundation as illustrated in the alternation part 100, and the like.

Since the concrete wall 220 and the anchor 230 have the same configuration as the concrete wall 120 and the anchor 130 of the alternating portion 100, a detailed description thereof will be omitted.

As shown in Figure 1 and 6, the upper structure 300 is composed of a lower slab reinforcement plate 310, composite reinforcing reinforcement 320 and the bottom slab 330.

The lower slab reinforcement plate 310 is made of steel or the like and is bent in a corrugated perpendicular direction or reinforced with a U-shaped rib and mounted on the alternating portion 100 and the pier 200.

The lower slab reinforcement plate 310 is provided with an anchor hole through which the anchor 130 passes.

The anchor hole is formed in accordance with the position of the anchor, it is also possible to share in the lower slab reinforcement plate 20 adjacent in the longitudinal direction or transverse direction or longitudinal direction.

The lower slab reinforcement plate 310 is installed throughout the alternating portion 100 on both sides, and thus functions as a formwork for constructing the floor slab 330, and thus does not use a separate formwork and is combined with the floor slab and the floor slab. There is an advantage of promoting the strength of.

The lower slab reinforcement plate 310 may be assembled with two or more in succession, and as shown in FIG. 7, the lower slab reinforcement plate 310 forms a junction part 311 in a form bent toward the upper side and neighbors the lower slab reinforcement plate 310. Fasteners 312 are assembled to the junction portion 311 of the). In addition, as shown in FIG. 8, the place where the abutments 311 abut is finished with a finish (eg, application of silicon) 313.

As shown in FIG. 15, the lower slab reinforcement plate 310 may be configured in which two or more are connected along the longitudinal direction, and the longitudinal connecting plate 376 may be manufactured in the form of a blocking plate on the upper surface of the longitudinal direction. It is a method of forming a connection part and assembling it with a fastener.

In addition, when there is a part lacking rigidity in the upper structure 300 may be added to the vertical reinforcement 314 to compensate for this.

The vertical reinforcement 314 is a plate of steel and arranged along the longitudinal direction on the lower slab reinforcement plate 310 and fixed by welding or the like. Preferably, a plurality of vertical reinforcement 314 is used along the transverse direction of the lower slab reinforcement plate 310. .

The vertical reinforcement 314 is installed in the case where the lower slab reinforcement plate 310 is arched and under load weakness.

The composite reinforcing bar 320 is reinforced (fixed) in the transverse and longitudinal directions on the lower slab reinforcement plate 310 to reinforce the upper structure 300.

When the lower slab reinforcement plate 310 is composed of two or more assemblies, the composite reinforcement reinforcement 320 may be reinforced after assembling all lower slab reinforcement plates 310 or each lower slab reinforcement plate 310 as shown in FIG. 7. 1: 1 corresponding to and assembled to the lower slab reinforcement plate 310 is connected to each other through a separate connecting reinforcing bars 321.

The floor slab 330 is placed on the lower slab reinforcement plate 310 with a predetermined thickness, and is constructed to a position in contact with the packing part, that is, the packing part beyond the back filling part after the shift part 100 and the shift part 100. It is constructed up to contact with

On the other hand, in the case of connecting with the asphalt pavement of the traffic-only road with a high traffic volume, as shown in FIG.

Secure the space (end of the ground facing the river) between the floor slab 330 and the paving part by installing a perforated pipe in this space and filling the gravel to construct a buffer slab 340, and the buffer slab 340 and Filling material may be filled between the bottom slab 330.

The present invention may include a tension member 350 (FIG. 1) to reinforce between the alternating portion 110 and the upper structure 300, the pier 200, and the upper structure 300.

The tension member 350 may be a steel bar, a stranded wire, or a reinforcing bar, and is selected according to the interval. One side of both sides of the longitudinal direction is preferably fixed to the lower slab reinforcement plate 310 by welding, and the other side of the alternating part 100 or the piers. It is fixed to the unit 200 to reinforce by binding them with each other.

The tension member 350 is installed in an inclined shape in which a portion connected to the alternating portion 100 or the pier 200 is relatively higher than a portion connected to the lower slab reinforcement plate 310, and thus, the alternating portion 100 or The upper portion 300 is supported by pulling the upper structure 300 on the basis of the pier 200 as a support base.

Here, a separate tension member anchorage 360 is applied to fix the tension member 350 to the anchor 130 at a high position in the alternating portion 100.

11 illustrates an example of a rod-shaped tension member 350, and the tension member fixing member 360 protrudes, for example, a bottom plate 361 and a bottom plate 361 having a hole through which the bolt-shaped anchor 130 passes. And the tension member 350 is screwed to a thread formed on the outer circumferential surface of the rod-shaped tension member 350 passing through the tension member receiver 362 and the tension member receiver 362 through which the rod-shaped tension member 350 penetrates. It consists of a nut 363 to fix the.

12 illustrates another example of the tension member 350 and the tension member anchorage 360. The tension member is a cable (or strand, reinforcing bar) type tension member 350, and the tension member anchorage 360 is an end portion of the alternating portion 100. It is characterized in that it is configured to turn the direction.

One end of the cable type tension member 350 is fixed to the lower slab reinforcement plate 310, and the other side is fixed to the anchor 130 side through the tension member fixing unit 360.

As shown in FIG. 12, the tension fixing unit 360 includes one or more turning parts 364 on the bottom plate 361.

The turning part 364 is, for example, a semi-circular protrusion and keeps the cable-like tension member 350 turned toward the lower slab reinforcement plate 310, and preferably the tension receiving portion in the bottom plate 361. 365 (in the form of a hole or a groove) is configured.

The tension member accommodating part 365 may be formed at both front and rear sides of the direction change part 364 so as to use the tension material anchorage 360 without front and rear direction division.

The turning part 364 may include, for example, a semi-circular groove into which the cable type tension member 350 is inserted so that the cable type tension member 350 is not separated from the left and right, and may form a departure prevention guide using reinforcing bars or the like. .

The cable type tension member 350 may be fixed to the bottom of the bottom plate 361 with a nut, bent to the anchor 130, or fixed to the lower slab reinforcement plate 310 so as to remain fixed at the tension member anchorage 360. .

Construction method of the steel deck reinforcement slab bridges in accordance with the present invention is as follows.

1. Digging and foundation construction (FIG. 16).

Dig the ground and construct the foundation in accordance with the position of the substructure of the bridge.

The drawing shows that there are three substructures as an example, and may be referred to as two alternating parts 100 and one pier part 200 therebetween.

Destroy the seat of the foundation for the construction of the foundation. The depth of the trench is preferably the dark estimated line.

A pile foundation 110-1 or a direct foundation 110-2 is constructed as a foundation in one place of excavation in accordance with the cancer estimation line.

For example, pile foundation (110-1) is installed after the drilling or drilling the pile 111 (concrete pile, steel pipe pile, synthetic pile, etc.) so that the pile tip is supported on the rock when the soil layer is deep. At this time, the pile 111 is to allow the bottom portion to be settled in the rock and also to the head reinforcing reinforcing bars 112 protruding to the top of the pile for the synthesis of the pile 111 and the concrete wall construction on the top.

As shown in FIG. 14, when the synthetic pile 371 is applied, the concrete pile is installed and the synthetic pile integrated anchor 370 is inserted into the upper end of the pile to protrude alternately to connect with the floor slab 330. And, at this time, to construct the composite reinforcing head reinforcing reinforcing bars (372).

It also includes a fixing ring 375 mounted on the head reinforcing steel reinforcing bars 372 for the synthetic pile.

In the case of the direct foundation 110-2, the reinforcement and formwork are installed on the trench surface, and the concrete is poured directly to construct the foundation 110-2. In the case of the direct foundation 110-2, the head reinforcing bars for binding with the concrete wall 220 to be constructed at the upper portion protrude.

In the case of the pier 210, the foundation is also constructed, and in the drawing, the foundation 210 is illustrated as an example.

2. Concrete wall and anchor construction (FIG. 17).

In the case of the shift part 100, the head reinforcing bar 112 of the pile 111 protrudes above the ground, and installs formwork with a width and a height surrounding the pile 111 and the head reinforcing bar 112 and reinforces the reinforcing bar. After the concrete is poured concrete wall 120 is constructed. Here, the anchor 130 is installed together, the anchor 130 is fixed to the reinforcing bar in the formwork, and then the concrete is poured to synthesize the concrete wall 120 and the anchor 130. The anchor 130 is a head and the anchor 130 protrudes to the outside (upper) of the concrete wall 120 for synthesis with the upper structure (300).

A plurality of anchors 130 are installed in the concrete wall 120 along the transverse direction, and two or more rows are possible along the longitudinal direction.

In the case of the concrete wall 220 of the pier 200, it is preferable that two rows of anchors 230 are configured to install the lower slab reinforcement plate 310 over both alternating portions 100.

The rear of the concrete wall 120 of the alternating portion 100 is made by a trench, and this part is filled, but the rigidity is weak, so that settlement may occur because the supporting wall 121 (Fig. 16) Can be installed together.

At least one support wall 121 is formed in a direction orthogonal to the concrete wall 120 at the rear of the concrete wall 120.

The supporting wall 121 may be integrated with the concrete wall 120 or may be a single type.

Reinforcing bar 121 is preferably protruded reinforcement for integral synthesis with the connecting slab to be constructed on the top.

Filling material is filled between the supporting walls (121).

In the case of the pier 200, a formwork is directly installed on the foundation 210, and the reinforcing bars are placed, and then concrete is poured to construct the concrete wall 220. In this case, the anchor 230 is constructed together with the anchor 130 of the shift unit 100.

3. Installation of lower slab reinforcement plate and vertical load (FIG. 18).

The lower slab reinforcement plate 310 is installed as a whole over the alternating portion 100 and the piers 200, which are lower structures, and specifically, the anchors 130 and 230 according to the anchor through-hole of the lower slab reinforcement plate 310. Place the lower slab reinforcement plate 310 so that it penetrates, secures the lower slab reinforcement plate 310 through the fastening of the anchor bars (130, 230), and loads the vertical load on the lower structure (by mobilizing an excavator if necessary). Tighten within the yield strength with a torque wrench, etc., to load.

The lower slab reinforcement plate 310 is installed in the alternating portion 100 and the concrete wall portions 120 and 220 of the pier 200, the two lower slab reinforcement plate 310 based on the pier 200. This can be installed.

When the composite reinforcing bar 320 is fixed in advance to the lower slab reinforcing plate 310, the synthetic reinforcing bar 320 is installed through the installation of the lower slab reinforcing plate 310, and if not, the lower slab reinforcing plate 310 is installed. After fixing the composite reinforcing bar 320 to the lower slab reinforcement plate (310).

4. Floor slab construction (FIG. 18).

The bottom slab 330 is constructed by pouring concrete on the lower slab reinforcement plate 310.

The floor slab 330 is constructed only up to the support wall 121, and if the road leading to the bridge is flexible paving, an additional cushioning slab may be installed between the paving unit to prepare for the differential settlement due to the difference in the rigidity of the floor slab and the paving part. have.

When the tension member 350 is applied, that is, before the concrete is placed, the bottom slab reinforcement plate is installed and the tension member 350 is installed during the vertical load loading process.

After curing of the floor slab 330 to install a protective measure on both sides.

Finally, the construction is completed by finishing the river protectors and repairing the river.

100: shift part, 110-1: pile foundation part
110-2: direct foundation, 120,220: concrete wall
130,230: anchor, 131: anchor body
131a: outer tube, 131b: cover plate
131c: inner tube, 131d: lower filler
131e: top blocking cap, 132,133: anchor bar
132a, 133a: outer socket, 132b: cover plate
132c, 133c: tightening nut, 133b: anchor cap
200: pier, 210: foundation
300: upper structure, 310: lower slab reinforcement plate
320: composite reinforcing steel, 330: floor slab
340: buffer slab, 350: tension member
360: tension member anchorage,
370: integrated pile integrated anchor, 372: reinforced head tofu for composite pile

Claims (8)

A foundation;
A lower structure (100,200) formed of a concrete wall and an anchor (130,230) installed to protrude a head in the concrete wall and installed on the foundation portion;
An upper structure 300 including a lower slab reinforcement plate through which the anchor penetrates while being supported on the concrete wall of the lower structure, a composite reinforcing steel bar disposed on an upper portion of the lower slab reinforcement plate, and a bottom slab constructed on the lower slab reinforcement plate; Including,
The anchor includes a multi-pipe anchor type body 131 is installed on the concrete wall through the lower slab reinforcement plate and an anchor bar fixed to the anchor body and supporting the upper structure,
The anchor body is an outer tube (131a), a cover plate (131b) formed in the form of a wing in the form of a ring in the circumference of the outer tube, at least one inner tube inserted into the outer tube in the form of concentric circles 131c, a lower blocking plate 131d coupled to the bottom of the outer tube and acting as a buffer and height adjustment of the inner tube, and an upper blocking cap 131e coupled to the upper portion of the outer tube,
The anchor bar is a bolt-shaped bolt formed on the outer circumferential surface is a plurality of bolt-shaped anchor bar 132, the upper end of which is installed higher than the anchor body on the outer tube circumference of the anchor body, the circumference of the bolt-shaped anchor bar The outer socket 132a, the bottom portion of which is supported by the upper portion of the lower slab reinforcement plate while being coupled to the upper portion, the cover plate 132b that is accommodated to pass through the bolt-shaped anchor bar, and is mounted on the outer socket, and is fastened to the bolt anchor bar. And a pressing plate (132d) interposed between the captive nut (132c) and the cover plate and the captive nut to transmit the tightening force of the captive nut to the cover plate. delete A foundation;
A lower structure (100,200) formed of a concrete wall and an anchor (130,230) installed to protrude a head in the concrete wall and installed on the foundation portion;
An upper structure 300 including a lower slab reinforcement plate through which the anchor penetrates while being supported on the concrete wall of the lower structure, a composite reinforcing steel bar disposed on an upper portion of the lower slab reinforcement plate, and a bottom slab constructed on the lower slab reinforcement plate; Including,
The anchor includes an anchor body 131 in the form of a multiple steel pipe and an anchor bar fixed to the anchor body and supporting the upper structure,
The anchor body is an outer tube (131a), a cover plate (131b) formed in the form of a wing in the form of a ring in the circumference of the outer tube, at least one inner tube inserted into the outer tube in the form of concentric circles 131c, a lower blocking plate 131d coupled to the bottom of the outer tube and acting as a height control and cushioning function of the inner tube, and an upper blocking cap 131e coupled to the upper portion of the inner tube or the outer tube; ,
The anchor bar is a steel rod-shaped anchor bar 133 inserted into the anchor body so that the bottom part is fixed to the concrete wall and the upper part is embedded in the upper structure through the lower slab reinforcement plate and the upper blocking cap. An outer socket 133a surrounding the anchor body as a tubular having an inner diameter larger than the outer diameter of the main body and being supported by being mounted on an upper portion of the lower slab reinforcement plate, and having an outer diameter larger than the outer socket and being mounted on the outer socket while being mounted on the outer socket. An anchor cap (133b) through which the 133 passes, and a tightening nut (133c) fastened to the steel bar-shaped anchor bar (133) above the anchor cap. delete The upper part of claim 1 or 3, wherein one side is fixed to the lower slab reinforcement plate and is inclined upward toward the other side, and is turned through the tension member anchorage and then fixed to the lower structure, and the upper structure is supported on the lower structure. A tension member 350 for supporting the structure,
The tension member fixing unit has a bottom plate 361 having a hole through which the anchor penetrates, a protrusion formed on the bottom plate 361, and a plate or box-shaped tension member accommodating part 362 and a tension member accommodating through the steel rod-shaped tension member 350. A nut 363 which is screwed to a screw thread formed on an outer circumferential surface of the steel rod-shaped tension member 350 penetrating the portion 362 to fix the tension member 350, and is selectively formed in a semi-circular protrusion shape on the bottom plate and the tension member Steel deck reinforcement slab bridges, characterized in that it comprises a supporting material receiving portion. The joint 311 of the lower slab reinforcement plate 310 of claim 1 or 3, wherein the lower slab reinforcement plate includes a junction portion 311 that is bent upward at an edge of the lower slab reinforcement plate. Assembled by the fasteners 312 in the longitudinal connection of the lower slab reinforcement plate is formed in the upper bone in the longitudinal connection plate 376 in the form of a blocking plate in the longitudinal bone is connected by the fastener Steel deck reinforcement slab shift bridge, characterized in that. The floor slab according to claim 1 or 3, wherein the bottom slab 330 is a connection slab integral floor slab, which is cast to a predetermined thickness on the support wall and the lower slab reinforcement plate 310 to be in contact with the packaging portion, in preparation for the uneven settlement Steel deck reinforcement slab shift bridge characterized in that it comprises a buffer slab 340 is installed. As a construction method of the steel deck reinforcement slab unchanged bridge according to claim 1 or 3,
A first step of digging the ground in accordance with the position of the lower structure of the bridge and constructing the foundation;
A second step of constructing an alternating part 100 and a pier part 200 formed of a concrete wall and an anchor on a foundation installed through the first step;
A third step of loading a vertical load after installing a lower slab reinforcement plate 310 on the alternating part and the pier part after the second step;
Steel deck reinforcement slab bridge bridge characterized in that it comprises a fourth step of constructing the floor slab 330 by placing concrete on the lower slab reinforcement plate.

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