KR20190131213A - Bridge construction method using manufactured pc slab - Google Patents

Abstract

The present invention relates to a bridge construction method using a precast floor slab, which uses the precast floor slab as a slab and constructs the precast floor plates in a holding type to support both ends by a precast transverse girder in a pile. The bridge construction method using the precast floor slab includes: (a) a step of connecting the precast transverse girder performing a role of a support supporting the bottom of both ends of the precast floor slab extended in the longitudinal direction and fixed to the upper surface of a pile head cap individually formed in a pile head, to each other in the transverse direction; and (b) a step of installing the precast floor slab connected in the longitudinal direction and the transverse direction while supporting both ends on the upper surface of the precast transverse girder. The precast floor slab is prefabricated in a factory to be extended in the longitudinal direction as a hollow slab or a pi-shaped slab and installed in the holding type for both ends to be supported on the precast transverse girder.

Description

Bridge construction method using ready-made floor plate {BRIDGE CONSTRUCTION METHOD USING MANUFACTURED PC SLAB}

The present invention relates to a bridge construction method using a ready-made bottom plate. More specifically, the ready-made bottom plate is used as a slab, and the ready-made bottom plate is mounted by non-synthesis using a precast lateral girder installed in a pile, but the pre-cast girder can be laminated. It relates to a bridge construction method using.

Figure 1a shows a perspective view and a connection diagram of a conventional assembly block for bridge top plate.

That is, as shown in Figure 1a, the tension steel wire 13 is provided therein, the fastening hole 11 for connecting the upper side and the lower side through the upper plate 21 of the bridge is arranged a plurality of upper girder 16 ) And a coupling hole 12 through which the upper side and the side surface are connected, tension the tensile steel wire 13 in which the tension maintaining means 23 is mounted at regular intervals in the assembly block 10. Tensile steel 13 is tensioned by the tension maintaining means 23 even after installing, curing and pouring concrete, removing the formwork and releasing tension of the tensile steel wire 13 at both ends of the assembly block 10. Introducing the assembly block 10 for the bridge top plate, characterized in that to maintain the,

The bridge top plate assembly block 10 is installed on the upper side of the girder 16, the fixing bolt 17 is installed, a plurality of assembly blocks 10 are arranged in the girder to install the top plate of the bridge and bridge top plate For assembling block 10 is connected to each other using a connecting bolt and a nut through a coupling hole 12 connecting the upper side and the side.

As a result, it can be seen that the bridge top assembly block 10 is made of precast material.

However, in the case of permanent bridges, the design cross-section is often not determined in advance and it must be constructed according to the site conditions. Therefore, it is necessary to manufacture and use the building blocks for bridge decks with more diverse cross-sections. Producing and providing the block in advance is economically inefficient due to the bridge characteristics.

Figure 1b is a view showing the construction of the bottom plate coupling portion and partial excerpt perspective in the conventional girder upper surface.

That is, the bottom plate is made of FRP material, but the FRP bottom plate 22 can be seen that the hollow section member of a certain thickness, it can be seen that the connecting device is installed on the upper surface of the girder by connecting.

In particular, the transverse composite member 24 is inserted and installed through the through hole 23 and the FRP bottom plate 22 hollow portion of the connecting device 20 so that the FRP bottom plate 1 is embedded by the filler 2. It can be seen that they are connected to each other by the connecting device (20).

Thus, the lateral composite member 24 can be seen that using the cage of the same material as the FRP bottom plate 22, which can be used in a limited bottom plate formed in the hollow, such as the FRP bottom plate 22 It can be seen.

That is, the conventional girder bridge can be seen that the building block 10 for the bridge top plate can be precast to the construction using the fixing bolt 17 on the top of the girder, the bottom plate is made of FRP bottom plate It can be seen that a connecting member such as a transverse synthetic member can also be used through the hollow part.

Republic of Korea Patent No. 10-0544304 (name of the invention: the assembly block for bridge deck, published date: January 23, 2006) Republic of Korea Patent No. 10-0568904 (Invention: Synthetic connection structure of fiber reinforced plastic bottom plate and girder, connection construction method and connection device, published date: April 10, 2006) Republic of Korea Patent No. 10-1762148 (Name of the invention: Bridges using precast PSC girder and construction method thereof, published date: July 27, 2017)

Accordingly, in the bridge, the precast transverse girder can be connected directly from the pile head in the transverse direction, while the bridge can be more easily installed in the pile head cap as a bridge substructure. A ready-made floor that can be installed by using a ready-made hollow bottom plate and a pie-type slab depending on the span, while allowing both ends to be mounted on the precast girder according to the span while ensuring flatness and easily adjusting the length extending in the longitudinal direction. The technical problem to solve the provision of bridge construction method using plate.

Bridge construction method using the ready-made bottom plate of the present invention in order to solve the above problems is fixed to the upper surface of the pile head cap formed on each of the pile head, to support the bottom of both ends of the ready-made bottom plate extending in the longitudinal direction Connecting the precast transverse girders serving as pedestals to each other in the transverse direction; And (b) mounting the ready-made bottom plate which is connected in the longitudinal and transverse directions while supporting both ends on the precast transverse girder upper surface, wherein the ready-made bottom plate is hollow slab or pie. The prefabricated slabs are pre-fabricated in the factory to extend in the longitudinal direction.

The present invention can be installed so that both ends are mounted on the upper surface of the precast transverse girder as a lower bridge structure by using a prefabricated bottom plate (hollow slab, pie slab) that is prefabricated to extend in the longitudinal direction. Bridge construction is possible.

In addition, the precast transverse girder of the present invention uses a precast product in which prestress is introduced so as to be manufactured with a minimum cross-section according to fabrication, transportation and installation. do.

In addition, the precast transverse girder upper surface of the present invention is a ready-made product in the state of being made to use a hollow bottom plate as it is, and when the span length is large, it is very economical and rapid bridge floor by using a pie-shaped slab which is also a ready-made product. Plate construction is possible.

Figure 1a is a perspective view and a connection configuration of a conventional assembly block for bridge top plate,
Figure 1b is a construction of the bottom plate coupling portion and partial excerpt perspective view of the conventional girder upper surface,
2a and 2b is a cross-sectional view and a longitudinal cross-sectional view of the bridge using the ready-made bottom plate of the present invention,
Figure 3a is a coupling of the pile head cap and the precast transverse girder of the present invention,
Figure 3b is a laminated installation of the precast transverse girder of the present invention,
Figure 3c is a transverse connection of the precast girder of the present invention,
Figure 3d is a longitudinal connection of the ready-made bottom plate of the present invention,
Figure 3e is a lateral connection of the ready-made bottom plate of the present invention,
4a and 4b is a flow chart of the bridge construction method using a ready-made bottom plate of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

[Bridge 100 using the ready-made bottom plate of the present invention]

2A and 2B are cross-sectional and longitudinal cross-sectional views of the bridge 100 using the ready-made bottom plate of the present invention.

First, the temporary bridge 100 using the ready-made bottom plate is a pile 110, a pile head cap 120, a precast lateral girder 130, a ready bottom plate 140, a lateral key block device as shown in Figure 2a And 150.

First, the pile 110 may use, for example, a steel pipe pile as the lower bridge structure, as shown in FIG. 2A. In FIG. 2A, four piles are constructed in one column. The number of columns in such a pile may be adjusted according to the width of the bridge, and is also spaced in the longitudinal direction to secure the span length (L).

The pile 110 is to be constructed by a bridge to form a drill hole in the ground and insert the steel pipe pile, and then to match the height of the top surface of the head in a row, such as by cutting the head, the height of the pile 110 bridge What is necessary is just to determine accordingly, and it turns out that the pile 110 constructed in one row by the bracing material 111 of the horizontal and diagonal direction is mutually restrained in the horizontal direction.

At this time, for the stable installation of the pile head cap 120 to be described later, a stopper 112, which is a shaped steel member fixed to the outer circumferential surface of the pile 110, is formed at the lower portion, so that the pile head cap 120 can be stably supported by the stopper. Will be done.

Next, the pile head cap 120 is to be inserted into the cut head (110) is cut into the interior as shown in Figures 2a and 2c, the precast transverse girder 130 to be described later while precast transverse The girder 130 is a portion through which the lower end of the connecting bolt 123 is fixed so as to be fixed to the pile head cap 120 by the connecting bolt 123.

Accordingly, the pile head cap 120 has a head bracket 122 integrated to wrap the file head from the bottom surface of the extension flange 121 and the bottom surface of the extension flange, the bottom surface is in contact with the upper surface of the pile head, as shown in Figures 2a and 2c and It is configured to include a connecting bolt 123.

In addition, since the cross-sectional area of the expansion flange 121 is inevitably larger than the diameter of the head bracket 122, it is preferable to form a reinforcing plate in the form of a vertical plate between the head bracket 122 and the expansion flange 121.

In the present invention, the precast transverse girder 130 is mounted on the upper surface of the pile head cap 120, and fixed using the connecting bolt 123 penetrating the precast transverse girder 130. ) Work must be performed in the upper space of the precast transverse girder 130 for installation. That is, the precast transverse girder 130 can be installed directly below the pile, thereby improving workability and workability.

Accordingly, in the present invention, as shown in FIG. 2A, the bolt fixing tool 125 is installed in the bottom surface of the expansion flange 121 in advance. The bolt fixing sphere 125 penetrates through the expansion flange 121 from the bottom of the expansion flange 121, so that the bolt fixing head 125a is set to contact the upper surface of the bottom of the expansion flange 121, the bolt fixing body portion 125b is to penetrate the expansion flange 121 to a diameter smaller than the bolt fixing head 125a, the inner surface is formed with a screw fastening portion, the screw fastening portion is formed on the exposed upper outer peripheral surface of the bolt fixing body (125b) The fastening nut 125c is fastened so that the bolt fixing tool 125 may be fixedly set as it is installed through the expansion flange 121.

Referring to the left view of FIG. 2C, the connection bolt 123 penetrates from the upper part to the through hole 132 of the mounted precast transverse girder 130 and the lower part is fastened to the bolt fixture 125. The cast transverse girder 130 can be simply fastened and fixed to the pile head cap 120, and the worker body is made in the upper space of the precast transverse girder 130, thereby greatly improving workability and thus providing rapid bridge construction. It can be seen that.

The precast transverse girder 130 is fixed to the upper surface of the pile head cap 120 using a connecting bolt 123, as shown in Figure 2a and the bottom of both ends of the bottom plate 140 extending in the longitudinal direction It will serve as a support base.

The precast transverse girder 130 is a concrete product to be segmented in advance in the factory, installed and assembled, to bind to ensure the integrity.

The precast transverse girder 130 is a girder member mounted on the upper row of pile 110 of the bridge so as to extend laterally than the pile 110, and the precast transverse girder 130 extends depending on the bridge. When the length is generated, the length of the extension can be inevitably changed every time when the production is made with one precast transverse girder 130, and the manufacturing cost is inevitably increased.

Thus, the present invention is a precast transverse girder 130 to the tension member 131 therein to be formed into a flat plate member of the minimum cross-section to facilitate the manufacture, transport and installation, but at both ends of Figure 3a Referring to the through-hole 132 of the vertical hole form is formed so that the connection bolt 123 described above can be penetrated and can be stacked and installed.

In other words, by manufacturing the precast transverse girder 130 as a flat plate member to be used in a form that is advantageous for lamination to ensure a constant thickness.

The integration of the laminated precast transverse girder 130 is basically using the connecting bolt 123, but the additional plate 133 is further installed on the outer surface of the laminated upper and lower precast girder 130. It is possible to enable a stable stacking.

Figure 3a is a coupling of the pile head cap 120 and the precast transverse girder 130 of the present invention.

That is, the pile head cap 120 is installed on the head of the pile 110 as shown in FIG. 3A and the left view, and the pile head cap 120 is installed to penetrate the entire precast transverse girder 130 up and down. It is integrated by the connecting bolt 123.

That is, the precast transverse girder 130 may be stacked up and down and supported on the upper surface of the pile head cap 120 to be fixed by the connecting bolt 123,

In addition, as shown in Figure 3a and the center view, the precast transverse girder 130 is to be stacked up and down, the upper precast transverse girder 130 and the lower precast transverse girder 130 is the connection bolt ( It can be seen that they are connected to each other by the additional plate 133, not 123.

The additional plate 133 is pre-filled on the side of the precast transverse girder 130 is fastened to the exposed buried nut 134 while the additional plate 133 is stacked up, down precast transverse girder 130 The role of linkage restraint.

In addition, the pile head cap 120 is a shear force of the pile 110 and the lower precast girder 130 in such a way that the pile head cap 120 is inserted into the insertion groove 135 formed on the bottom of the lower precast girder 130. It can be seen that it is trying to secure the connection performance.

In addition, as shown in the right side of Figure 3, the precast transverse girder 130 is to be stacked up and down, while using the connecting bolt 123 together with the precast transverse girder 130 and the lower precast transverse It can be seen that the direction girder 130 may be connected to each other by the additional plate 133.

The additional plate 133 is also pre-filled on the side of the precast transverse girder 130 is fastened to the exposed buried nut 134 while the additional plate 133 is precast transverse girder 130 stacked up and down The same thing that made the role of connecting and restraining

The pile head cap 120 is connected to the insertion groove 135 formed on the bottom of the precast transverse girder 130 at the bottom to connect the pile 110 with the precast transverse girder 130 at the bottom. It is the same to try to secure.

At this time, the head interference of the connection bolt 123 in the upper and lower precast girder 130 is resolved and closed in such a manner as to block out the connecting end of the upper and lower precast girder 130 do.

Furthermore, when divided into the precast transverse girder 130 of the upper and lower can be made of a material of different strengths according to the stacking position of the precast transverse girder 130 can be very efficient.

That is, when a large tensile force is generated in the lower precast transverse girder 130, when using high-strength concrete, it is possible to secure the efficiency by reducing the weight and the PC strand installation amount can be adjusted.

Figure 3b is a laminated installation of the precast transverse girder 130 of the present invention.

Furthermore, according to Figure 3b, it can be seen that the lateral connection of the precast transverse girder 130 is to be made on the upper surface of the pile head cap 120, so that the connection bolt 123 can be used, It can be seen that the additional plate 133 may be installed in a plurality, and the additional plate 133 may be connected to each other by a method such as welding in the horizontal direction or vertically, so that the binding force may be enhanced. .

3C is a transverse connection diagram of the precast transverse girder 130 of the present invention.

According to FIG. 3B, the transverse connecting surfaces of the precast girder 130 may be bitten with each other in the form of a shear key and a shear groove.

According to Figure 3c it can be seen that the three precast transverse girder 130 is to be connected to each other in the transverse direction, not the same form, but the central precast transverse girder 130 by the locking jaw both sides precast transverse It can be seen that they may be connected to each other in such a way as to be seated on the locking jaw of the directional girder 130. This method has the advantage of ensuring construction by reducing the number of construction bolts connected.

That is, both side precast transverse girder 130 is to ensure more extension than the central precast transverse girder 130, but the pile head cap 120 is located on the bottom to be stably supported, the center pre- The cast transverse girder 130 can be used to be seated on the latching jaw of both side precast transverse girder 130, the protruding connecting bolt 123 head is covered with a protective cap at the time of dismantling the bridge later (123) to facilitate removal.

The ready-made bottom plate 140 is a bottom plate member having a hollow portion having a predetermined thickness, as shown in Figure 2a.

Bridges are usually installed by using a slab plate and using a slab girder, and as described in (Patent Document 0003) of the prior art document, there is an attempt not to construct a floor plate at all using a slab girder.

However, since adopting a method of separately manufacturing the ready-made bottom plate 140 is the most burdensome thing in terms of cost, the present invention uses the ready-made hollow slab 141 or the pie-type slab 145.

First, as shown in FIG. 2A, the hollow slab 141 is a ready-made product that can be economically manufactured in a predetermined size as a reinforced concrete bottom plate member having a predetermined thickness and having adjacent hollow portions S therebetween.

3b, the hollow slab 141 is a ready-made bottom plate 140, and the bottom surface is in contact with the upper surface of the precast transverse girder 130 so as to be connected in the longitudinal and transverse directions and connecting bolts ( 123) and the interference portion is the pile head cap 120 is formed in the precast transverse girder 130 with the connection bolt 123 therebetween is finished with a finishing material together with the connection bolt 123.

Accordingly, the flat bottom plate 140 can be secured evenly by using the hollow slab 141. The self-weight is not so large that rapid construction is possible, and the ready-made product can be used as it is to secure economical efficiency.

In particular, although the present invention uses a precast product as a conventional ready-made bottom plate but does not install it in such a way that both ends are simply supported, the present invention has to continuous a plurality of deck-type slabs. By constructing it, it is possible to secure high visibility and economic feasibility.

3d illustrates a longitudinal connection of the ready-made bottom plate 140.

That is, the pile head cap 120 of the head of the pile 110 has a precast transverse girder 130 is installed without a connecting bolt 123 or a connecting bolt (using an additional plate 133 not shown) and such a precast The bottom plate 140 is vertically connected to each other on the upper surface of the lateral girder 130.

The bottom plate 140 is a hollow bottom plate 141 or the pie-shaped slab 145 both the hollow portion (S) is formed so that the longitudinal connecting reinforcing bar 142 is previously inserted by the bulb 143 in the hollow portion When the pile head cap 120 so as to overlap each other on the top surface to finish with the finishing material 144 it is possible to simply integrate the ready-made bottom plate 140 in the longitudinal direction of each other.

Figure 3e shows in particular the transverse connection of the ready-made bottom plate 140 of the present invention.

That is, the longitudinal connection of the ready-made bottom plate is used because the hollow portion of the ready-made bottom plate extends in the longitudinal direction, but in the present invention, in the present invention, there is no connection part (hollow part extending in the lateral direction) in the transverse direction. The direction key block device 150 is used.

That is, as shown in Figure 4b, the ready-made bottom plate 140 in contact with each other in the transverse direction may be a hollow slab 141 or pie-shaped slab 145, the other bottom in the ready-to-bottom transverse connection portion ( It can be seen that the first key block groove 151 is formed to be exposed in a horizontal groove shape at 140.

On the one side of the ready-made bottom plate 140 in a size corresponding to the first key block groove 151, the second key block groove 152 is also formed in the horizontal groove form the ready-made bottom plate 140 in the horizontal direction While contacting, the first and second key block grooves 151 and 152 communicate horizontally with each other.

In the state in which the key block 153 is inserted into the second key block groove 152, the insertion vertical hole 154 extending from the second key block groove 152 to the surface to the first key block groove 151. Push it in,

The wedge 155 is inserted into the end surface of the key block 153 exposed by the insertion vertical hole 154 to give tension, and the wedge 155 is closed with the finishing material 144 to vertically plate the bottom plate 140 in the longitudinal direction. And also can be connected to each other in the transverse direction,

When dismantling it is possible to simply blow off the finishing material 144 and remove the wedge 155 to separate the ready-made bottom plate 140 laterally from each other.

Next, as shown in Figure 2b, the bridge 100 using the ready-made bottom plate is also a pile 110, pile head cap 120, precast transverse girder 130, ready-made bottom plate 140, horizontal Directional key block device 150 is included.

2A is different from that of using a pie-shaped slab 145 as the ready-made bottom plate 140. In particular, in the case of using the pie-shaped slab 145 as the ready-made bottom plate 140, the cross-sectional shape is formed in both vertical abdomen spaced from each other on the bottom of the upper plate with a cross-sectional space so that the space between the two vertical abdomen is hollow In the case of forming the part (S), in contrast to the hollow slab 141, both vertical abdominals are more advantageous in long span (distance between longitudinal piles).

3D, since the pie-shaped slab 145 as the ready-made bottom plate 140 has a hollow portion formed in the longitudinal direction, the longitudinal connecting reinforcing bars 142 are previously inserted into the hollow portion by the bulb 143, and thus the pile When the head cap 120 is overlapped with each other on the top surface to finish with the filler 144, the ready-made bottom plate 140 can be easily integrated with each other in the longitudinal direction,

Also, as shown in Figure 3e, the pie-shaped slab 145 in contact with each other in the lateral direction is formed on the other side of the bottom plate 140, the first key block groove 151 is exposed in the horizontal groove form. You can see

On the one side of the ready-made bottom plate 140 in a size corresponding to the first key block groove 151, the second key block groove 152 is also formed in the horizontal groove form the ready-made bottom plate 140 in the horizontal direction The first and second key block grooves 151 and 152 communicate with each other horizontally while being in contact with each other.

In the state in which the key block 153 is inserted into the second key block groove 152, the insertion vertical hole 154 extending from the second key block groove 152 to the surface to the first key block groove 151. Push it in,

The wedge 155 is inserted into the end surface of the key block 153 exposed by the insertion vertical hole 154 to give tension, and the wedge 155 is closed with the finishing material 144 to vertically plate the bottom plate 140 in the longitudinal direction. And also can be connected to each other in the transverse direction,

When dismantling it is the same that it is possible to simply separate the ready-made bottom plate 140 in the transverse direction by blowing the finish material 144 and removing the wedge 155.

[Method of Construction of Bridges (100) Using Ready-made Floor Plates]

4A and 4B illustrate a method for constructing a bridge 100 using a ready-made bottom plate according to the present invention.

This construction method is a ready-made bottom plate 140 may be divided according to the hollow slab 141 or the pie-shaped slab 145, but the same as the mounting target will be described based on the hollow slab 141.

First, as shown in Figure 4a, the bridge must be constructed in order to construct the pile over a number of rows in the longitudinal direction. Four piles 110 are installed in one column, but a plurality of rows may be spaced apart from each other in the longitudinal direction.

The pile 110 has a merit that it is more efficient for cutting the head and the construction of the drilling hole in the ground to be constructed by inserting a circular steel pipe pile and the noise is not great.

The piles 110 constructed in one row are bound to each other by the bracing material 111 and do not necessarily need to install the bracing material 111.

Next, the heads of the piles 110 are cut to have the same height, and then the heights of the upper surfaces are equalized. Then, the pile head cap 120 described above is fixed and installed in such a manner as to be inserted into the upper surface of the piles 110 and the stopper. By using the (112) to enable the insertion support state without a separate welding work, which is very useful for securing workability and workability in the later disassembly.

The expansion flange 121 is installed so as to pass through the bolt fixture 125 in advance. The bolt fixing ball 125 is provided with a bolt fixing ball head 125a, a bolt fixing body 125b, and a fastening nut 125c.

Thus, even if the precast transverse girder 130 is mounted in the longitudinal direction between the pile and the pile, between the precast transverse girder 130 adjacent to the longitudinal direction, the bolt fixture 125 of the precast transverse girder 130 It is to be exposed by the through hole 132.

The connecting bolt 123 passes through the through hole 132 of the precast transverse girder 130 and is fixed while reaching the bottom of the pile head cap through the bolt fixing tool 125, and the connecting bolt 123 is fixed. The nut is to be fixed on the upper surface of the precast girder 130.

Of course, the connecting bolt 123 is first installed in the bolt fixture 125, and the installation bolt 123 can be installed in such a way that the connecting bolt 123 is inserted into the through hole of the precast girder 130.

The precast transverse girder 130 is advantageous for lamination when it is formed as a flat plate member, and a plurality of precast transverse girder 130 may be treated with a shear key and a shear groove in the transverse direction with each other, or may be connected to each other using a locking step. none. In addition, the prestress is introduced using the prestressing material 131 to be advantageous to the manufacturing and construction by the optimum cross-section.

Next, as shown in Figure 4b, when the bridge is to be dismantled, the longitudinal and transverse connection of the ready-made bottom plate 140 is dismantled, the ready-made bottom plate 140 is because it is a concrete product can be replaced immediately damaged Goes economical.

In addition, by loosening the connection bolt 123, the ready-made bottom plate 140 may be easily separated by the precast lateral girder 130, and of course, may be simply separated by using the additional plate 133.

Furthermore, the precast transverse girder 130 may also be separated from the pile 110 to be reused, and the pile head cap 120 may also be separated from the pile 110 and may be reused.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

100: bridge using a ready-made bottom plate 110: pile
111: bracing material 112: stopper
120: pile head cap 121: expansion flange
122: tofu bracket 123: connecting bolt
125: bolt fixing ball 125a: bolt fixing head
125b: bolt fixing part body 125c: tightening nut
130: precast transverse girder 131: tension member
132: through hole 133: additional plate
134: landfill nut 135: insertion groove
140: ready-made bottom plate 141: hollow slab
142: longitudinal connecting bar 143: bulb
144: Finishing material 145: Pi-type slab
146: bottom plate tension material 147: socket connection
148: coupler 150: lateral key block device
151: first key block groove 152: second key block groove
153: key block 154: insertion vertical hole
155: wedge

Claims (10)

(a) Precast transverse girder fixedly installed on the upper surface of the pile head cap 120 respectively formed on the head of the pile 110 and serving as a pedestal for supporting the bottom of both ends of the ready-made bottom plate 140 extending in the longitudinal direction. Connecting the 130 to each other in the transverse direction; And
(b) mounting the bottom plate 140 installed in the longitudinal and transverse directions while supporting both ends on the precast transverse girder upper surface;
The ready-made bottom plate 140 is a hollow slab 141 or a pie-shaped slab 145 is pre-fabricated in the factory to extend in the longitudinal direction to be installed in a mounting manner so that both ends are supported on the precast transverse girder 130 Bridge construction method using a ready-made floor plate, characterized in that. The method of claim 1,
Precast transverse girder 130 of the step (a) is a concrete product pre-fabricated in the factory using the tension member 131 to be installed by using a pile head cap 120 on the pile head, fixing bolts The precast transverse girder 130 laminated by the (123) to be integrated with each other,
The lower end of the fixing bolt 123 is fastened and fixed by the bolt fixing tool 250 of the expansion flange of the pile head cap 120, and the connection bolt 123 installation work precast transverse girder 130 upper space Bridge construction method using ready-made floorboard to ensure workability to proceed at. The method of claim 1,
The precast transverse girder 130 of step (a) is a concrete product pre-fabricated in the factory using the tension member 131 to be installed by laminating the pile head using the pile head cap 120, but An additional plate 133 is installed on the outer surface of the upper and lower precast girder 130 so that the stacked precast girder 130 is connected to each other, and the additional plate 133 is welded to each other. To be connected,
The add plate 133 is pre-filled on the side of the precast transverse girder 130 is fastened to the exposed buried nut 134 while the add plate 133 is stacked up, down precast transverse girder 130 Bridge construction method using ready-made floorboard to act as a restraint. The method of claim 2 or 3,
The pile head cap 120 supports the precast transverse girder 130 while the precast transverse girder 130 is fixed to the pile head cap 120 by the connection bolt 123. As the bottom of the penetrates and is fixed,
An extension flange 121 having a bottom face in contact with an upper surface of the pile head and a head bracket 122 integrated to surround the pile head from the bottom of the extension flange, and a lower end of the connection bolt 123 may be bolted to the expansion flange 121. 125),
The bolt fixing ball 125 penetrates the expansion flange 121 from the bottom of the expansion flange 121, the bolt fixing shoes 125a set so that the upper surface is in contact with the bottom surface of the expansion flange 121; and bolt fixing shoes 125a The through flange 121 is to be penetrated to a diameter smaller than), the inner surface of the screw fastening portion is formed, the upper outer peripheral surface of the exposed screw fastening portion is formed by a fastening nut (125c) fastening bolt fixing fixture Including the body portion (125b),
Bridge construction method using a ready-made bottom plate so that the bolt fixture 125 is fixedly set as a state installed through the expansion flange 121 and the connection bolt is fastened through the bolt fixture body portion (125b) is fixed. The method of claim 1,
In the step (b), the hollow slab 141 or the pie-shaped slab 145 is spaced apart from each other in the longitudinal direction there is a precast transverse girder as a concrete member having an adjacent hollow portion (S) having a predetermined thickness ( 130) Bridge construction method using a ready-made bottom plate is installed so that the bottom surface is in contact with the upper end and connected in the longitudinal and transverse direction. The method of claim 5,
The longitudinal connection of the hollow bottom plate 141 or the pie-shaped slab 145 is
Using the hollow portion (S) of the hollow bottom plate 141 or the pie-shaped slab 145 so that the longitudinal connecting reinforcing bar 142 is previously fitted by the bulb 143 in the hollow portion, pile head cap 120 Bridge construction method using a ready-made bottom plate so as to overlap with each other on the upper surface to finish with the finishing material 144 to integrate the ready-made bottom plate 140 in the longitudinal direction. The method of claim 5,
The lateral connection of the hollow bottom plate 141 or the pie-shaped slab 145, but using a lateral key block device 150,
The lateral key block device 150 is a first key block groove 151 is formed to be exposed in the horizontal groove shape on the other side of the ready-made bottom plate 140 in the horizontal connection portion, the first key block The second key block groove 152 of the horizontal groove shape is formed on one side of the ready-made bottom plate 140 in a size corresponding to the groove 151, so that the ready-made bottom plate 140 is in contact with each other in the horizontal direction. The second key block grooves 151 and 152 communicate horizontally with each other, and the second key block into the first key block groove 151 in a state where the key block 153 is inserted into the second key block groove 152. After pushing through the insertion vertical hole 154 extending from the groove 152 to the surface, the wedge 155 is inserted into the end surface of the key block 153 exposed by the insertion vertical hole 154 to give tension. , Bridge construction method using the ready-made bottom plate to connect the ready-made bottom plate 140 in the transverse direction by finishing the wedge 155 with the finishing material 144. The method of claim 5,
Block-out portion (A) is formed on the top of the pie-shaped slab 145 and the bottom plate tension member having a parabolic shape to be bent downward so that both ends are drawn out from the block out portion (A), but the bottom plate tension member (146) connection portion In the socket connection 147 is installed to pass through
A screw construction is formed on the outer circumferential surface of the socket connection portion, and the bridge construction method using the ready-made bottom plate which is connected to the bottom plate tension member 146 inserted and fixed in the coupler 148 while being rotationally fastened to the socket hole of the coupler 148. . The method of claim 5,
The pie-shaped slab 145 is formed in both vertical abdomen spaced apart from each other on the bottom surface of the top plate with a cross-sectional shape so that the space between the two vertical abdomen is formed as a hollow portion (S) as compared to the hollow slab 141 A bridge construction method using a ready-made bottom plate that allows both vertical abdominals to use I type steel. A bridge constructed using the bridge construction method using the ready-made floor plate of claim 1.

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