KR100778252B1 - Prefabricated slab bridge with H-girder installed on the connecting support member inserted on the lattice pile pillar and construction method - Google Patents

Abstract

        The present invention is to install a bridge to install a pier of a certain size on the shore or to cover the river to install a bridge,

       After installing a plurality of piers with a lattice at regular intervals at regular intervals in a predetermined area, inserting and supporting a connection member in the upper portion of the pile pillar, H-shaped girder in the girder support groove formed in the four directions of the connection support member H-girder is installed in a lattice shape by interconnecting them, and precast concrete panels are mounted on the lower flange of the H-girder installed in the lattice shape and mounted on the lower flange of the adjacent H-girder, and adjacent pre-cast concrete panels are installed. It is related to the prefabricated slab construction method to form the upper structure of the bridge by placing the reinforcing bars, and then placing the reinforcing bar, and placing the concrete to install the cast-in-place slab.

Description

Fabrication type slab bridge constructed by supporting H-girder to connection member inserted on matrix pile column and construction method about}

        1 is a view showing the completed prefabricated slab bridge of the present invention from above.

        FIG. 2 shows a cross section A-A of FIG. 1. FIG.

        3 shows a section B-B of FIG. 1.

        Figure 4 is a view showing in three dimensions the connection support member of the present invention.

        5 is a view showing a lower portion of the connection support member of the present invention.

        Figure 6 is a view showing a cross section of the connecting support member of the present invention.

        Figure 7 (a) (b) (c) is a view showing several examples of the H-girder of the present invention.

        8 is a view showing a precast concrete panel of the present invention.

        Figure 9 (a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) (m) is a prefabricated slab of the present invention

Drawing showing step by step the process of installing bridges.

        <Explanation of symbols for the main parts of the drawings>

        10: prefabricated slab bridge 11: ground

        13: side finish

        20: connecting support member 21: through hole

        22: shear member 23: girder groove

        24: upper surface 25: lower surface

        26: stepped groove

        30: Precast concrete panel 31: Panel body

        40: H type girder 41: upper flange

        42: lower flange 43: abdomen

        44: lower casing concrete 45: preflex beam

        46: H-shaped steel 47: prestressed concrete girder

        50: cast-in-place slab

        60: pile pillar 61: body

        62: tip 63: protruding jaw

        64: upper protrusion

        70: shear root 71: rebar

        72: band reinforcement 73: through hole

        The present invention for the installation of the remnant bridge to install a pier or to cover the river to install a pier of a constant size on the coast,

       While installing a plurality of piers with a grid at regular intervals in a certain area, the upper projections of the pile pillars penetrate into the through holes formed in the center of the connecting support member, while the upper projections are part of the pillars. The concrete is poured into the through hole, and the concrete is poured while being mounted in the girder support groove of another connection support member installed on the opposite side by mounting an H-girder in the girder support groove formed in the four directions of the connection support member. Close the gap and install the H-girder as a grid,

       The grids are installed in close contact with each other while the precast concrete panels are mounted on the lower flanges of the H-type girder facing each other.

       Prefabricated slab bridge construction for placing the reinforcing bar on top of the pre-cast concrete panel and the upper support part installed through the connecting support member and the H-type girder, and casting the concrete to install the site casting slab to form the bridge upper structure It is about a method.

        As described above, the purpose of installing the bridges in the prefabricated manner is to install the bridges in the water, and to install the foundations, the work of excavating the ground of the riverbed to install the foundation and the work of installing the columns thereon are all installed in the water or Or in order to improve the problem that it takes a lot of air and construction cost to install bridges on the soft ground, pile type pillars that can be used as bridge piers directly on the soft ground of the river as a grid in the ground Then, while fixing the pile column from the top with a pre-fabricated support member thereon, the support members installed in the grid are connected to each other by H-girder and installed as a grid, and then on the lower flange of the H-girder installed by the grid. Precast concrete panels are installed in close contact with each other. Then, it is to cure the casting of concrete and providing a prefabricated slab bridge to install the bridge superstructure.

       Conventionally, in order to install a bridge in a river or a beach, a clamshell is installed, reinforcement and concrete are laid to form a foundation by excavating the internal ground where the clamshell is installed, and then a foundation is installed thereon. As the bridge is installed, the bridge device is installed thereon, and the girder is installed thereon, and the bridge is installed. As a result, the construction period is excessively consumed.

        The present invention has been proposed to provide an economical and efficient bridge construction method that can reduce the construction cost while reducing the construction period more efficiently while improving the above problems, the bridge of the bridge directly on the soft ground of the bed A plurality of pile pillars that can be utilized as piers are installed in a grid type or penetrated into the ground, and then fixedly penetrated at the upper portion of the pile pillar by a connecting support member, and in the girder grooves installed in four directions of the connecting support members installed by the grid. After installing the H-girder, install the precast concrete panel on the lower flange of the H-girder installed in pairs on both sides of the H-girder and install it in close contact with each other, arrange the reinforcing bars, and pour concrete Prefabricated slab bridge to install the upper structure of the bridge,

       The H-girder and precast concrete panels, which omit the foundation part, utilize the pile pillar as a piers, and interconnect the connecting support member and the connecting support member installed on the pile pillar, pre-fabricated by the factory. It is a bridge construction method to reduce the construction period and significantly reduce the construction cost required for the construction of the bridge by simply assembling and eliminating the amount of concrete work.

        The present invention relates to the installation of a prefabricated slab bridge (10) for the installation of the remnant bridge or to install the bridge to cover the river to install a pier of a constant size on the coast,

       Steel pipe columns, steel columns, concrete pile columns in which prestress is introduced, and pile columns 60, which are any of the preflex columns in which preflex is introduced, are arranged in a grid at regular intervals in the bed 11 of the seabed or seabed of a certain area. After installing a plurality of piers, the upper protrusion 64 of the pile pillar 60 penetrates into the through hole 21 formed in the center of the connection supporting member 20, and the upper protrusion 64 which is a part of the pillar is provided. Filling the concrete through the through-hole 21 while being protruded, and mounted on the opposite side by mounting the H-girder 40 in the girder groove groove 23 formed in the four directions of the connection support member 20 Placing concrete in the girder girder groove 23 while closing the gap while being mounted in the girder girder groove 23 of the connection support member 20, the H-type girder 40 is installed as a grid,

       While being installed in the grid and installed in close contact with each other while mounting the precast concrete panel 30 on the lower flange 42 of the H-shaped girder 40 facing each other,

       Reinforcing bar is placed on top of the upper protrusion 64 and the H-shaped girder 40 installed through the precast concrete panel 30 and the connecting support member 20, and the concrete is cast to in-situ slab 50 It is characterized in that the construction method of the prefabricated slab bridge 10 to form a bridge upper structure by installing a).

       Hereinafter, the configuration and operation of the present invention will be described in detail by the accompanying drawings.

       1, 2 and 3 is a view showing the cross-sectional AA and cross-section BB of the completed prefabricated slab bridge of the present invention, the steel pipe column, steel column, prestress is introduced into the ground 11 of the bed or seabed of a certain area After installing a plurality of piers in a lattice at regular intervals of the pile pillar 60, which is one of the concrete pile pillars and the preflex columns into which the preflex is introduced, the upper projection 64 of the pile pillar 60 is Filling and filling concrete in the through hole 21 while penetrating into the through hole 21 formed in the center of the connection support member 20 to protrude and install the upper projection 64, Mounting the H-shaped girder 40 in the girder girders (23) formed in the four directions to be mounted in the girder girders (23) of another connecting support member 20 installed on the opposite side while the concrete in the girders (23) By pouring To fill the closed and install the H-shaped girder (40) in a grid,

       While being installed in the grid and installed in close contact with each other while mounting the precast concrete panel 30 on the lower flange 42 of the H-shaped girder 40 facing each other,

       Reinforcing bar is placed on top of the upper protrusion 64 and the H-shaped girder 40 installed through the precast concrete panel 30 and the connecting support member 20, and the concrete is cast to in-situ slab 50 It is to be a prefabricated slab bridge 10 to form a bridge upper structure by installing a).

       The connection supporting member 20 inserted on the pile pillar 60 installed at the corners is installed with a H-shaped girder 40 in a transverse type so that an angle is formed, and is connected to the pile pillar 60 installed at four periphery. H-type girder 40 is mounted on the support member 20 in three directions, and H-shaped girder grooves 23 are formed in four directions of the connection support member 20 on the pile pillar 60 installed at the center. The girder 40 is mounted so that the H-type girder 40 is installed to form a plurality of gratings as a whole.

       2 is a cross-sectional view AA of Figure 1, by installing the H-shaped girder 40 in the girder groove grooves 23 formed in the four directions of the connection support member 20 installed on each of the pile pillars 60 installed as a grid Precast concrete panel 30 is installed in close contact with the lower flange 42 of the H-shaped girder 40 installed on the opposite side, the reinforcing bar is placed thereon and concrete is poured, but the side finishes at the four corners It is a prefabricated slab bridge 10 in which (13) is formed and the bridge upper structure is installed.

       4 and 5 is a view showing the connection support member of the present invention in three dimensions, as a precast product made in advance in the factory, made of a hexagon having a certain thickness and area, but the through hole 21 of a constant diameter in the center While forming the stepped groove portion 26 is formed around the through hole 21 of the lower surface, and to form a rectangular girder groove 23 with a constant depth in the four directions of the upper surface 24, The inner surface forming the through hole 21 and the girder groove 23 is a connecting support member 20 is provided with a front end member 22 at regular intervals.

        The through hole 21 may be installed in various shapes such as a rectangle, a circle, a polygon, and the like to allow the upper protrusion 64 of the pile pillar 60 to be inserted into the through hole 21. In the stepped groove portion 26 formed around the lower surface of the sphere 21, when the upper protrusion 64 of the pile pillar 60 is inserted, the protruding jaw 63 of the pile pillar 60 has a lower portion of the through hole 21. As the pile pillar 60 is caught in the stepped groove portion 26 formed around the surface to prevent the pile pillar 60 from escaping upward through the through hole 21, the load acting on the bridge is transmitted to the connection supporting member 20. This is to ensure a smooth transfer to the pillar (60).

       6 is a view showing a cross-section of the connection support member of the present invention, the upper surface 24 and the lower surface 25 is made of a hexahedron so as to have a constant thickness while being a flat surface, the through hole 21 in the center While forming a plurality of shear members 22 at regular intervals on the inner surface of the through hole, and formed around the lower surface 25 of the through hole 21 penetrated from the upper surface 24 to the lower surface 25. It is larger than the diameter of the through hole, but is to form a stepped groove portion 26 slightly larger than the diameter of the pile column (60).

       When the upper projection 64 of the pile pillar 60 is inserted through the through-hole 21, the protruding jaw 63 of the pile pillar 60 is inserted into the stepped groove 26, so that the protruding jaw 63 is stepped. In order to be caught by the groove portion 26, the size of the stepped groove portion 26 is slightly larger than the diameter of the pile pillar 60 to penetrate the upper protrusion 64 of the pile pillar 60 through the through hole 21. This is to ensure easy insertion into the stepped groove of the pile pillar.

        Figure 7 (a) (b) (c) is a view showing a number of examples of the H-girder of the present invention, Figure (a) is a lower portion while applying a downward load on the H-shaped steel 46 made to be bent upwards H-shaped girder 40, which is a preflex girder 45 formed by pouring concrete into the flange 42 and pouring the lower casing concrete 44,

       (B) is the H-girder 40, which is the H-shaped steel 46,

      Figure (c) is a prestressed concrete girder 47 made of girder in the H-type reinforced concrete.

       In addition to the girder mentioned above, it can also be used as an H-type girder by using various types of girders.

       Figure 8 is a view showing a precast concrete panel of the present invention, as a precast product of reinforced concrete manufactured at the factory, the reinforcement is placed in the shape of a panel and then cast the concrete to produce a panel shape panel body 31 A plurality of shear members 22 are installed at regular intervals at the top or bottom of the.

       The front end member 22 and the concrete to be poured when installing the site placing slab 50, the upper structure of the bridge thereon after a plurality of in close contact in a row on the lower flange 42 of the H-girder 40 This is to be integrated with the precast concrete panel 30.

        9 (a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) (m) show the prefabricated slab bridge of the present invention. As a diagram showing the process step by step, Figure (a) is any one of the steel pipe pillars, steel columns, prestressed concrete pile pillars and preflex introduced pillars installed in the ground 11 of the bed or seabed As the pile column 60 of the pile column, an upper protrusion 64 smaller than the diameter of the pile pillar is installed in the upper portion of the pile pillar 60, and the pile pillar is formed at the portion where the upper protrusion 64 starts at the pile pillar 60. It is to show that the pile pillar (60) formed by the projection jaw (63) by the diameter of the type or infiltrated a plurality of pile columns (60) in a grid at regular intervals by the width and length of the designed bridge.

        At this time, the pile column 60 supports the load acting on the bridge so as to be tightly typed or penetrated into the ground so as not to affect the safety of the bridge.

        Figures (b) and (c) are through holes 21 of the support member 20 connecting the upper projections 64 protruding from the upper part of the pile pillar 60 installed in a plurality of lattice at regular intervals in the ground (11). In the stepped groove portion 26 formed in the lower surface 25 of the through hole 21 to protrude upward while a predetermined length of the upper projection portion 64 protrudes while inserting through the through hole 21 is provided with a plurality of shear members on the inner surface While the projecting jaw 63 of the pile pillar 60 is inserted and supported, the concrete is poured into the through hole 21 so that the upper protrusion 64 and the connecting support member 20 are integrated to the upper portion of the pile pillar 60. The connection support member 20 is fixedly installed.

       Figures (d), (e), (f) is fixed to the connecting support member 20 on the upper part of the pile pillar 60 installed in a plurality of grids in the ground, then (f) is a connection support installed in the center End portions of the H-shaped girder 40 provided with a plurality of shear members 22 are respectively installed in the rectangular girder groove 23 formed in the four directions of the member 20, and the girder groove 23 and the H-shaped are respectively provided. It is mounted so as to be integrated by pouring concrete with the end of the girder 40.

       Figures (d) and (e) shows that the pile pillars are installed in a plurality of grid columns so that the slab bridge of a predetermined area is installed, and then the support members 20 are installed through the pile pillars 60 at the side and top. As a present example, in the case of the connecting support member 20 installed in the center of the pile pillar 60 installed in the grid, the connecting support member 20 is installed in the ground a plurality of pile pillars 60 in the ground (Fig. As shown in f), the end of the H-shaped girder 40 is mounted on the girder groove grooves 23 formed in the four directions of the connection support member 20, and the connection support member 20 is installed at the four directions of the corners of FIG. ) Is mounted to the H-shaped girder (40) end in the two-way girder groove (23) at right angles to form an angle, and three-way girder groove (23) in the connection support member (20) installed on the side in four directions H-girder is installed in a lattice and is rectangular Such that the above is formed.

       Figures (g) and (h) are a plurality of shear members 22 on one surface on the lower surface of the girder 40 and a plurality of girder 40 installed in a grid as shown in (e) at a certain interval. The precast concrete panel 30 is installed, but in close contact with each other, so that the precast concrete panel 30 is laid on the lower flange 42 of all the H-type girders 40 installed as a lattice. will be.

       As described above, the precast concrete panel 30 is laid on the lower flange 42 of the H-shaped girder 40 as the floor in order to install concrete in order to install the on-site placing slab 50 as a bridge upper structure. When the pre-cast concrete panel 30 installed between the H-shaped girder 40 and the girder to serve as a lower formwork, when the casting is completed, the shear installed on one side of the precast concrete panel 30 This is to allow the cast-in-place slab 50 and the precast concrete panel 30 to be integrated by the member 22 through the concrete.

        Figures (i), (j), (k) is a precast concrete panel 30 in close contact with the floor as shown in the upper part of the lower flange 42 between the H-girder and the girder in accordance with the above (g), In order to install the upper structure of the bridge, the concrete is placed on the precast concrete panel 30 installed between the H-girder 40 and the girder 40 while the upper protrusion 64 of the H-girder 40 and the pile pillar 60 is formed. ) Is installed by pouring in place to become a site-in-place slab (50) of a certain thickness.

       Figure (j) shows the side finish portion 13 of the cast-in-place slab 50 by pouring concrete on four sides of the rectangular slab bridge, Figure (k) shows the cast-in-place slab 50 is installed in the center will be.

       (L) is an upper protrusion part through which the upper protrusion part 64 of the pile pillar 60 is inserted through the through hole 21 of the connection support member 20 of FIGS. (J) and (k). Forming a predetermined through hole 73 in the body of (64) and install the reinforcing bar 71 in a circular manner at regular intervals in the through hole 73 while the reinforcing bars arranged in the circular shape while allowing the reinforcing bars of both sides protrude Shearing roots (70) installed tied with a band reinforcement (72) at regular intervals.

       When the shear roots 70 are installed in the upper projections 64 protruding out of the through hole 21 of the predetermined length connection support member 20 as described above, and then pouring the concrete to install the cast-in-place slab 50. This is to ensure that the cast-in-place slab 50 and the upper protrusion 64 are integrally and strongly connected.

       Figure (m) shows that the slab bridge is installed prefabricated through the above process.

       Steel pipe columns, steel columns, concrete pile columns in which prestress is introduced, and pile columns 60, which are any of the preflex columns in which preflex is introduced, are arranged in a grid at regular intervals in the bed 11 of the seabed or seabed of a certain area. After installing a plurality of piers, the upper projection 64 of the pile pillar penetrates into the through hole 21 formed in the center of the connection support member 20 to allow the upper projection 64 to protrude. 21) the concrete is poured into the filling, and the other connecting support member 20 installed on the opposite side by mounting the H-girder 40 in the girder groove groove 23 formed in the four directions of the connecting support member 20 Placing concrete in the girder girders (23) while closing the gap while being mounted in the girder girders (23) to install the H-type girders (40) in a grid,

       While being installed in the grid and installed in close contact with each other while mounting the precast concrete panel 30 on the lower flange 42 of the H-shaped girder 40 facing each other,

       Reinforcing bar is placed on top of the upper protrusion 64 and the H-shaped girder 40 installed through the precast concrete panel 30 and the connecting support member 20, and the concrete is poured to in-situ slab 50 It is to be a prefabricated slab bridge 10 to form a bridge upper structure by installing a).

       The present invention omits the installation of the bridge foundation to support the bridge when the bridge is installed on the river and the river bed, and installs a plurality of pile support pillars directly in the ground and installs a connection support member thereon. H type girders are installed in the girder grooves formed in the member to install the H type girders with a lattice, and then the precast concrete panels are mounted on the upper part of the lower flange of the H type girders installed with the lattice. Then, in order to install the site casting slab, which is the upper structure of the bridge, the concrete is placed on top of the precast concrete panel, and the slab bridge is installed in a prefabricated manner so that the site casting slab of a predetermined thickness is installed. H-shaped girders, pile columns, connecting support members and precast concrete panels are simply assembled and installed. Efficiently and to shorten the period while registered to the installation of the bridge reduced the concrete tasks to a minimum to reduce the economic cost of installation is an excellent bridge installation.

Claims (7)

       Install a plurality of piling piers with grids at regular intervals in the seabed or undersea of a certain area.        Filling the concrete through the through hole while the upper projection is installed in the through hole penetrating into the through hole provided with a plurality of shear members on the inner surface formed in the center of the connection supporting member, the upper projection is installed,        Mounting the concrete in the girder gird groove while placing the H-girder provided with a plurality of shear members at the end in the girder gird groove formed in the connecting support member to be mounted in the girder gird groove of another connecting support member installed on the opposite side. Finish, install the H-girder as a grid,        The precast concrete panel is installed on the lower flange of the H-type girder, which is installed with the grid, and is installed in close contact with each other.        Rebars are placed on top of the pre-cast concrete panel and the upper support part installed through the connecting support member and the H-type girder, and cast-in-cast concrete is installed to install a cast-in-place slab of constant thickness to form a bridge upper structure. A prefabricated slab bridge mounted by mounting an H-girder on a connecting support member inserted on a lattice pile pillar characterized by installing a slab bridge.        The method of claim 1,        The connecting support member is manufactured in a hexagon having a predetermined thickness and area, but forms a through hole of a constant diameter in the center, and forms a stepped groove around the through hole of the lower surface, and has a constant depth in four directions of the upper surface. To form a rectangular girder groove, the inner surface forming the through hole and the girder groove groove H-girder on the connecting support member inserted on the grid pile pillar characterized in that the shear members are installed at regular intervals, respectively. Prefabricated slab bridge mounted by mounting.        The method of claim 1,        The H-girder is connected to a support member inserted on a lattice pile pillar characterized in that it is one of a preflex girder, an H-shaped steel, and a prestressed concrete girder, which has cast a lower casing concrete on a lower flange. Prefabricated slab bridge mounted by H-girder.        The method of claim 1,        The pile pillar is a steel pipe pillar, a steel pillar, a concrete pile pillar with a prestress introduced, or a preflex pillar with a preflex introduced. Prefabricated slab bridge mounted by H-girder.        The method of claim 1,        A circular through hole is formed in the body of the upper protrusion protruding to the outside through the through hole of the connection supporting member, and the bars are arranged in a circular shape in the through holes, and the band bars are bundled at regular intervals. A prefabricated slab bridge mounted by mounting an H-girder on a connecting support member inserted on a lattice pile pillar, characterized by further installing a shear root so that both ends protrude a predetermined length outwardly of the through hole.        One of the steel pillars, steel pillars, pre-stressed concrete pile columns and pre-flexed pillars installed in the bed or on the seabed, which is larger than the diameter of the pile pillars at the top of the pile pillars. A small upper protrusion is installed, and a pile pillar having a protruding jaw formed by the diameter of the pile pillar is formed at the portion where the upper protrusion starts at the pile pillar, and a plurality of pile pillars are formed in a grid at regular intervals by the width and length of the designed bridge. Or intrusive;        A certain length of the upper projection is projected upward while inserting the upper projection formed in the upper part of the pile pillar installed in the lattice at regular intervals in the ground into the through hole provided with the plurality of shear members in the through hole of the connecting support member. In addition, the projecting jaw of the pile pillar is inserted into and supported in the stepped groove formed on the lower surface of the through hole, while the concrete is placed in the through hole so that the upper protrusion and the connecting support member are integrated so that the connecting support member is fixed to the upper pile pillar. Doing;        After fixing the connection support member to the upper part of the pile pillar installed in the ground by lattice, in the case of the connection support member installed in the center, a plurality of shear members are installed at the end in the girder groove formed in the four directions of the connection support member. Mounting the end of the H-girder, the support member installed in the four directions of the corner is mounted on the end of the H-girder installed in the girder groove grooves of the two directions at a right angle so that the angle is formed, the end of the H-shaped girder The connection supporting member installed on the side of the girder grooves in the three directions in each of the end of the H-girder is provided with a plurality of shear members at the end, while placing the concrete between the H-girder end and the girder groove groove Installing the H-type girder so that the gap is tightly filled so that the H-type girder is installed in a lattice as a whole to form a rectangular range;        Install the H-shaped girders installed in the grid and the precast concrete panels installed on the bottom flange of the girders at regular intervals on the one side of the girders, and install them in close contact with each other. Laying the precast concrete panel on the ground as a floor;        Precast concrete panel is installed close to the upper part of lower flange between H type girder and girder as floor, and then concrete is placed on precast concrete panel installed between H type girder and girder to install bridge upper structure. Install and pour cured so as to be a cast-in-place slab of a certain thickness to include the upper projection of the girder and the pile pillar,        H-girder is attached to the connecting support member inserted on the lattice pile pillar, which is characterized by installing concrete slab on the four sides of the rectangular slab bridge and installing the slab bridge in a prefabricated manner. Construction method of prefabricated slab bridge installed by mounting.        The method of claim 6,        The through projection of the connection support member is inserted through the upper projection of the pile pillar to form a constant through-hole in the body of the upper projection of which part protrudes, and install the reinforcing bars in a circular manner at regular intervals in the through holes, Mounting the H-shaped girder to the connecting support member inserted on the grid pile pillar characterized in that the step of installing the shear roots bound with the band reinforcement at regular intervals of the reinforcing bars arranged in a circular interval while allowing the reinforcing bar to protrude Construction method of prefabricated slab bridge

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