JP2006328867A - Structure and construction method of road built near abutment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the fabrication cost of a PCa (Precast Concrete) board by forming at least one of a floor panel, an extended floor panel, and a movable panel, the extended floor panel and movable panel being movable relative to the floor panel, by a cast-in-place concrete method to allow economic construction of a road built near an abutment. <P>SOLUTION: The structure of the road built near the abutment includes the floor panel built on the abutment and on the ground near the abutment, the extended floor panel extending over the floor panel from the bridge side, and the movable floor panel on the floor panel which movable panel is built to be adjacent to the extended floor panel. At least one of the floor panel, extended floor panel, and movable panel is formed by the cast-in-place concrete method, and a sliding material is interposed between the panel formed by the cast-in-place concrete method and a panel on or under the panel. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a structure of a road constructed near an abutment and a construction method.

  In the road constructed near the abutment, in order to absorb the temperature expansion and contraction of the bridge, an extended floor slab that is integrated with the bridge and extends from the bridge onto the abutment is disposed on the ground near the abutment. A movable structure with respect to the bottom plate is adopted.

In the conventional construction method of the road structure, a first precast reinforced concrete plate (hereinafter referred to as “PCa plate”) is placed on the ground near the abutment with its end received by the abutment, Some have a second PCa plate extending on the first PCa plate (see, for example, Patent Document 1 or 2). Since the frictional resistance generated between the first PCa plate and the second PCa plate is small, the second PCa plate is movable with respect to the first PCa plate.
JP 2002-339315 A JP 2002-84280 A

  Since the specifications of the PCa plate differ from site to site, the above-described construction method, in which all the PCa plate forms must be individually designed and manufactured, may be expensive to manufacture. In addition, when adopting construction by in-situ concrete instead of construction by PCa plate, the frictional resistance generated between the plate formed by in-situ concrete and the plate above or below the plate increases, Relative movement is not smooth.

  An object of the present invention is to provide at least one of the bottom slab, the extended floor slab movable with respect to the bottom slab, and the movable floor slab on the bottom slab and constructed adjacent to the extended floor slab concrete. This is to reduce the production cost of the PCa plate and to enable economical construction of the road constructed near the abutment.

  The road structure constructed in the vicinity of the abutment according to the present invention includes a bottom slab constructed on the abutment and the ground in the vicinity of the abutment, an extended floor slab extending on the bottom slab from a bridge portion side, and the bottom slab And a movable floor slab constructed adjacent to the extended floor slab. At least one of the bottom plate, the extended floor plate, and the movable floor plate is formed of cast-in-place concrete, and a sliding material is interposed between a plate formed of the cast-in-place concrete and a plate on or below the plate. .

  The bottom slab can be formed by in-situ concrete. In this case, the extended floor slab and the movable floor slab are formed by a PCa plate.

  The bottom slab and the movable floor slab can be formed of cast-in-place concrete. In this case, the extended floor slab is formed of a PCa plate.

  The bottom slab and the extended floor slab can be formed of cast-in-place concrete. In this case, the movable floor slab is formed of a PCa plate.

  The bottom slab, the extended floor slab, and the movable floor slab can all be made of cast concrete.

  The bottom slab and the extended floor slab can be formed of a PCa plate. In this case, the movable floor slab is formed of cast-in-place concrete.

  The bottom slab and the movable floor slab can be formed of a PCa plate. In this case, the extended floor slab is formed of cast-in-place concrete.

  The bottom plate can be formed of a PCa plate. In this case, the extended floor plate and the movable floor plate are formed of cast-in-place concrete.

  The sliding material can be installed such that its surface is in contact with the surface of a plate constructed on or under the plate provided with the sliding material.

  A part of the sliding material can be provided inside the bottom slab, the extended floor slab, or the movable floor slab.

  The sliding material can be provided on the surface of the bottom slab, the extended floor slab, or the movable floor slab.

  The sliding material can be adhered to the surface of the bottom slab, the extended floor slab or the movable floor slab.

  A part of the sliding material can be provided inside the bottom plate, the extended floor slab or the movable floor slab, and in this case, the surface of the sliding material can be made substantially coincident with the surface of each plate. .

  A part of the sliding material can be provided inside the bottom plate, the extended floor slab, or the movable floor slab, and in this case, the sliding material can protrude from the surface of each plate.

  The sliding material can be installed on the entire surface of the bottom slab, the extended floor slab or the movable floor slab.

  The sliding material can be installed on a part of the surface of the bottom plate, the extended floor slab or the movable floor slab.

  As the sliding material, stainless steel, a fluororesin or FRP plate, a sheet in which an aluminum foil is fixed to a polyester film, or sand can be used.

  According to the present invention, a road construction method constructed in the vicinity of an abutment includes a first step of constructing a bottom slab with cast-in-place concrete on the abutment and the ground in the vicinity of the abutment, and a floor slab of the bridge portion. A second step of building an extended floor slab on the bottom plate and a third step of building a movable floor slab adjacent to the extended floor slab on the bottom plate before or after the second step. At least one of the extended floor slab and the movable floor slab is formed of a PCa plate, and the extended floor slab and the movable floor slab are movable with respect to the bottom slab.

  According to the present invention, a road construction method constructed in the vicinity of an abutment includes the first step of constructing a bottom slab with a PCa plate on the abutment and the ground in the vicinity of the abutment, and an extension integrally formed with the floor slab of the bridge portion A second step of building a floor slab on the bottom plate; and a third step of building a movable floor slab adjacent to the extended floor slab on the bottom plate before or after the second step. One of the extended floor slab and the movable floor slab is formed of a PCa plate, and the other is formed of cast-in-place concrete. The extended floor slab and the movable floor slab are movable with respect to the bottom slab.

  According to the present invention, another construction method for a road constructed in the vicinity of the abutment is to construct a bottom slab with cast-in-place concrete or PCa plate on the abutment and the ground in the vicinity of the abutment, and to integrate the floor slab of the bridge part. And a movable floor slab integrated with the extended floor slab is constructed by in-situ concrete on the bottom slab. The extended floor slab and the movable floor slab are movable with respect to the bottom slab.

  According to the present invention, at least one of the bottom slab, the extended floor slab movable with respect to the bottom slab, and the movable floor slab is constructed by in-situ concrete. Thereby, this invention reduces the production cost of a PCa board compared with a prior art, and enables the economical construction of the road constructed | assembled near an abutment.

  Referring to FIGS. 1 and 2, a road 10 constructed in the vicinity of an abutment is shown, and a bridge girder 20 is mounted on the abutment 16 via a support 18 in a bridge portion 12 up to a bridge girder end gap 11. A floor slab 22 is provided on 20. On the other hand, in the earthwork section 14 adjacent to the bridge section 12, a bottom slab 26 is provided on the abutment 16 and the ground 24 near the abutment, and an extended floor slab 28 extending from the floor slab 22 is provided on the bottom slab. A movable floor slab 30 is provided adjacent to the extended floor slab. A floor slab 42 is fixed on the bottom slab 26 with anchor bolts 40, and a telescopic device 44 is installed between the fixed floor slab 42 and the movable floor slab 30.

  In addition, asphalt pavement 38 is applied on the floor slab 22 of the bridge portion 12, the extended floor slab 28 of the earthwork unit 14, and the movable floor slab 30, and the fixed floor slab 42 of the earthwork unit 14 and the ground 46 near the fixed floor slab. Asphalt pavement 48 is given on the top.

  In the example shown in FIG. 2, the bottom slab 26 is formed of cast-in-place concrete, and the extended floor slab 28 and the movable floor slab 30 are formed of PCa plates. The extended floor slab 28 is connected to the floor slab 22 of the bridge portion 12 by an extended floor slab connection anchor 34, and the movable floor slab 30 is connected to the extended floor slab 28 by a joint 36. A sliding material 32 is disposed between the bottom plate 26, the extended floor slab 28 and the movable floor slab 30.

  When the example shown in FIG. 2 is constructed, first, a bottom slab 26 is formed by cast-in-place concrete on the abutment 16 and the ground 24 near the abutment. After the concrete of the bottom slab is solidified, stainless steel, fluorine A sliding material 32, which is a sheet of resin or FRP, or a sheet in which an aluminum foil is fixed to a polyester film, is bonded with an adhesive (FIGS. 3 and 4). Thereafter, the extended floor slab 28 which is a PCa plate is disposed adjacent to the floor slab 22 of the bridge portion 12 on the sliding material 32, and after the extended floor slab 28 is disposed, the PCa plate adjacent to the extended floor slab 28 is used. A movable floor slab 30 is arranged. The movable floor slab 30 may be disposed prior to the disposition of the extended floor slab 28.

  Moreover, it can replace with an adhesive agent and can fix the sliding material 32 with a volt | bolt, a screw, or a nail. Further, instead of the above example in which the plate-like or sheet-like sliding material 32 is fixed to the bottom plate 26, sand can be used as the sliding material 32 and can be sprayed on the bottom plate 26.

  In the example shown in FIGS. 5 to 11, instead of the above-described example in which the sliding material 32 is disposed on the entire upper surface of the bottom plate 26, a large number of sliding materials 32, each of which is a plate-shaped piece, are disposed at equal intervals. However, as long as the sliding material 32 is not unevenly distributed, it does not have to be arranged at equal intervals. The shape of the sliding material 32 may be a square, a rectangle, a triangle, another polygon, a circle, or an ellipse.

  In the example shown in FIG. 6, the square sliding members 32 are arranged at equal intervals in the length direction and the crossing direction of the road. In the example shown in FIG. 7, instead of the example shown in FIG. 6 that is arranged at equal intervals, the sliding material 32 includes a first row 60 and the first row arranged at equal intervals in the cross direction of the road. Second rows 62 corresponding to movement in the transverse direction are alternately arranged at equal intervals in the length direction of the road. In the example shown in FIG. 8, instead of the above example, the sliding member 32 moves the first row 64 arranged at equal intervals in the length direction of the road and the first row in the length direction of the road. Corresponding second rows 66 are alternately arranged at equal intervals in the crossing direction of the road. In the example shown in FIGS. 9 to 11, the sliding member 32 is circular instead of the example shown in FIGS.

  In the example shown in FIG. 12, the sliding member 32 is a perforated plate having a plurality of square openings 68. The openings 68 are arranged at equal intervals in the length direction and the transverse direction of the road. Although not shown, the shape of the openings 68 may be other than a square, and the arrangement of the openings 68 may not be equal. Further, the sliding material 32 may be a plate in which plate materials are combined in a lattice shape instead of the perforated plate. Moreover, in the example shown in FIGS. 13 and 14, the sliding material 32 is a strip-like elongated rectangle. In the example shown in FIG. 13, the sliding members 32 are arranged at equal intervals in the length direction of the road. In the example shown in FIG. 14, the sliding members 32 are arranged at equal intervals in the cross direction of the road.

  In the example shown in FIG. 15, the surface of the sliding material 32 substantially coincides with the surface of the bottom plate 26, and the portion other than that is in the bottom plate 26. In this case, the sliding member 32 is arranged as in the examples shown in FIGS. 4 and 6 to 14. First, a base member 74 having one or more sliding members 32 fixed to a reinforcing bar 70 embedded in the bottom plate 26 is fixed by a bolt 72 capable of adjusting the height of the sliding member 32. Adjust the height. Next, concrete is cast so that the surface of the sliding material 32 and the surface of the bottom plate 26 substantially coincide with each other to form the bottom plate 26. Thereby, the surface of the sliding material 32 can be made to substantially coincide with the surface of the bottom plate 26, and the portion other than that can be filled in the bottom plate 26.

  Further, in the example shown in FIG. 16, the sliding material 32 is protruded from the surface of the bottom plate 26 instead of the above example in which the surface of the sliding material 32 substantially coincides with the surface of the bottom plate 26. In this case, the space between the sliding materials 32 is filled with sand so that the corners of the protruding sliding materials 32 hit the extended floor slab 28 or the movable floor slab 30 and do not hinder the movement of the both floor slabs 28, 30 relative to the bottom slab 26. It is preferable that the surface of the sand and the surface of the sliding material 32 are substantially matched or the corners of the sliding material 32 are chamfered in advance.

  Furthermore, instead of the above-described example in which the sliding material 32 is installed on the bottom plate 26, the sliding material 32 can be installed on the extended floor plate 28 or the movable floor plate 30 which is a PCa plate. In this case, the sliding material 32 is installed on each floor slab 28, 30 so that the surface of each floor slab 28, 30 and the surface of the sliding material 32 coincide with each other when the floor slabs 28, 30 are formed.

  Further, in the example shown in FIG. 17, the bottom slab 26, the extended floor slab 28 and the movable floor slab 30 are all made of cast-in-place concrete. First, the bottom slab 26 is formed by cast-in-place concrete on the abutment 16 and the ground 24 near the abutment, and then the extended floor slab 28 and the extended floor slab that are integrated with the floor slab 22 of the bridge portion 12 are integrated. The movable floor slab 30 to be formed is formed on the bottom slab 26 by cast-in-place concrete. The sliding material 32 is installed on the bottom plate 26 by the above method.

  Although not shown, instead of the above example in which the extended floor slab 28 and the movable floor slab 30 are formed by on-site concrete, one of both floor slabs 28 and 30 may be formed by a PCa plate and the other by on-site concrete. it can. The sliding material 32 is installed between the bottom plate 26, the extended floor plate 28, and the movable floor plate 30 by the above method.

  Further, although not shown, the bottom plate 26 can be formed of a PCa plate in place of the above-described example in which the bottom plate 26 is formed of on-site concrete. In this case, at least one of the extended floor plate 28 or the movable floor plate 30 is installed on the site. Formed with cast concrete. When the bottom plate 26 is formed of a PCa plate, the sliding material 32 is placed on the bottom plate 26 so that the surface of the bottom plate 26 and the surface of the sliding material 32 coincide with each other at the time of molding.

  In any of the above-described examples, the sliding resistance 32 between the bottom plate 26, the extended floor slab 28, and the movable floor slab 30 reduces the frictional resistance generated between the bottom plate 26, the extended floor slab 28, and the movable floor slab 30. Is done. Therefore, when the bridge expands and contracts due to heat, the extended floor slab 28 and the movable floor slab 30 integrated with the bridge move with respect to the bottom slab 26, and this movement is converted into expansion and contraction of the expansion device. That is, by forming at least one of the bottom slab 26, the extended floor slab 28 movable relative to the bottom slab, and the movable floor slab 30 with cast-in-place concrete, the manufacturing cost of the PCa plate can be reduced as compared with the prior art. Economical construction of roads built near the abutment becomes possible.

The top view of the road constructed near the abutment. Sectional drawing of the road constructed near the abutment. Sectional view of bottom slab, extended floor slab or movable floor slab with sliding material installed over the entire surface. A plan view of a bottom slab, an extended slab or a movable slab with sliding material installed on the entire surface. Sectional drawing of the bottom slab, extended floor slab, or movable floor slab in which many sliding materials which are plate-shaped small pieces were installed. A plan view of a bottom slab, an extended slab or a movable slab in which square sliding materials are arranged at equal intervals. The first row in which square sliding materials are arranged at equal intervals in the cross direction of the road and the second row corresponding to the movement of the first row in the cross direction of the road are the length of the road. A plan view of a bottom slab, an extended slab or a movable slab arranged alternately at equal intervals in the direction. A first row in which square sliding materials are arranged at equal intervals in the road length direction and a second row corresponding to the movement of the first row in the road length direction A plan view of a bottom slab, an extended slab or a movable slab arranged alternately at equal intervals in the transverse direction. The top view similar to FIG. 6 of the bottom slab, the extended floor slab, or the movable floor slab in which the circular sliding material is arrange | positioned. The top view similar to FIG. 7 of the bottom slab, extended floor slab, or movable floor slab in which the circular sliding material is arrange | positioned. The top view similar to FIG. 8 of the bottom slab, extended floor slab, or movable floor slab in which the circular sliding material is arrange | positioned. The top view of the bottom slab, the extended floor slab, or the movable floor slab in which the sliding material which is a perforated board which has a some opening is arrange | positioned. A plan view of a bottom slab, an extended slab or a movable slab in which rectangular sliding materials are arranged at intervals along the length of the road. A plan view of a bottom slab, an extended slab or a movable slab in which rectangular sliding materials are arranged in the transverse direction of the road. A cross-sectional view of the bottom plate in which the surface of the sliding material substantially coincides with the surface of the bottom plate, and the portion other than that is buried inside. A cross-sectional view of a bottom plate in which a sliding material protrudes from the surface of the bottom plate and a portion other than the sliding material is buried therein. Sectional drawing of the road constructed near the abutment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Road 11 Bridge end part gap 12 Bridge part 14 Earthwork part 16 Abutment 18 Support 20 Bridge girder 22 Floor slab 24, 46 Ground 26 Bottom slab 28 Extension floor slab 30 Movable floor slab 32 Sliding material 34 Extension floor slab connection anchor 36 Joint 38, 48 Asphalt pavement 40 Anchor bolt 42 Fixed floor slab 44 Telescopic device 60, 64, First row 62, 66, Second row 68 Opening 70 Reinforcement 72 Height adjustment bolt 74 Base member

Claims (22)

A road structure built near the abutment,
A bottom slab constructed on the abutment and the ground in the vicinity of the abutment, an extended floor slab extending on the bottom slab from a bridge portion side, and a movable floor constructed on the bottom slab and adjacent to the extended floor slab Including editions,
At least one of the bottom plate, the extended floor plate, and the movable floor plate is formed of cast-in-place concrete, and a sliding material is interposed between the plate formed of cast-in-place concrete and the plate on or below the plate. The structure of the road.   The road structure according to claim 1, wherein the bottom slab is formed of cast-in-place concrete, and the extended floor slab and the movable floor slab are formed of PCa plates.   The road structure according to claim 1, wherein the bottom slab and the movable floor slab are formed of cast-in-place concrete, and the extended floor slab is formed of a PCa plate.   The road structure according to claim 1, wherein the bottom slab and the extended floor slab are formed of cast-in-place concrete, and the movable floor slab is formed of a PCa plate.   The road structure according to claim 1, wherein the bottom slab, the extended floor slab, and the movable floor slab are all formed of cast concrete.   The road structure according to claim 1, wherein the bottom slab and the extended floor slab are formed of PCa plates, and the movable floor slab is formed of cast-in-place concrete.   The road structure according to claim 1, wherein the bottom slab and the movable floor slab are formed of PCa plates, and the extended floor slab is formed of cast-in-place concrete.   The road structure according to claim 1, wherein the bottom slab is formed of a PCa plate, and the extended floor slab and the movable floor slab are formed of cast-in-place concrete.   The road structure according to claim 1, wherein the sliding material is installed so that a surface thereof is in contact with a surface of a plate constructed on or below the plate on which the sliding material is provided.   The road structure according to claim 9, wherein a part of the sliding material is inside the bottom slab, the extended floor slab, or the movable floor slab.   The road structure according to claim 9, wherein the sliding material is on a surface of the bottom slab, the extended floor slab, or the movable floor slab.   The road structure according to claim 9, wherein the sliding material is bonded to a surface of the bottom plate, the extended floor slab, or the movable floor slab.   The road structure according to claim 10, wherein a surface of the sliding material substantially coincides with a surface of the bottom plate, the extended floor slab, or the movable floor slab.   The road structure according to claim 10, wherein the sliding material protrudes from a surface of the bottom slab, the extended floor slab, or the movable floor slab.   The road structure according to claim 11, wherein the sliding material is installed on the entire surface of the bottom slab, the extended floor slab, or the movable floor slab.   The road structure according to claim 11, wherein the sliding material is installed on a part of a surface of the bottom plate, the extended floor slab, or the movable floor slab.   The road structure according to claim 1, wherein the sliding material is a plate material of stainless steel, fluororesin, or FRP.   The road structure according to claim 1, wherein the sliding material is a sheet in which an aluminum foil is fixed to a polyester film.   The road structure according to claim 1, wherein the sliding material is sand. A road construction method built near the abutment,
A first step of constructing a bottom slab with cast-in-place concrete on the abutment and the ground in the vicinity of the abutment;
A second step of constructing on the bottom slab an extended slab that is integral with the bridge slab;
Building a movable floor slab adjacent to the extended floor slab on the bottom slab before or after the second step; and
A road construction method, wherein at least one of the extended floor slab and the movable floor slab is formed of a PCa plate, and the extended floor slab and the movable floor slab are movable with respect to the bottom slab. A road construction method built near the abutment,
A first step of constructing a bottom plate with a PCa plate on the abutment and the ground in the vicinity of the abutment;
A second step of constructing on the bottom slab an extended slab that is integral with the bridge slab;
Building a movable floor slab adjacent to the extended floor slab on the bottom slab before or after the second step; and
One of the extended floor slab and the movable floor slab is formed of a PCa plate, the other is formed of cast-in-place concrete, and the extended floor slab and the movable floor slab are movable with respect to the bottom slab. Law. A road construction method built near the abutment,
Constructing a bottom slab with cast-in-place concrete or PCa plate on the abutment and the ground in the vicinity of the abutment;
Building an extended floor slab integral with the floor slab of the bridge portion and a movable floor slab integral with the extended floor slab on the bottom slab by in-situ concrete;
The road construction method, wherein the extended floor slab and the movable floor slab are movable with respect to the bottom slab.

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