JP2005282135A - High level road for automobile juxtaposed with small road and ordinary road in layers - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a high level road for an automobile juxtaposed with a small road and an ordinary road in layers, capable of largely reducing construction cost, by largely reducing a bridge main groove width, by effectively introducing the small road in a width constitution of a bridge. <P>SOLUTION: A bridge main groove is formed into a plural-layer deck structure of three layers or more, and the small road or the ordinary road is arranged in respective deck units. Among the road arranged in a plurality of layers, the road (a small type and the small road or an ordinary type and the ordinary road) of at least the same two layers is formed as an inverse directional one-way traffic road without arranging a median divider strip, and the other road is formed as a facing traffic road provided with a median divider strip. A bridge structure is used for the high level road for the automobile juxtaposed with the small road and the ordinary road in layers, and is formed into a structure capable of providing a deck of three layers or more. At the beginning, the ordinary road or the small road is arranged on a deck of two layers or more, and in the future, a horizontal girder is arranged in a space part without arranging the deck, and a new deck can be extended by arranging a vertical girder on the horizontal girder. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an elevated road for automobiles, and more particularly, to an elevated road for automobiles in which a small road and an ordinary road are stacked and provided in multiple layers of three or more layers in order to separate a small automobile and a large automobile.

In general, on a road, a small vehicle such as a passenger car (hereinafter simply referred to as a small vehicle) and a large vehicle such as a truck or a dump truck (hereinafter simply referred to as a large vehicle) run together.
In this way, in order to mix large and small cars, ordinary roads are constructed in accordance with the standards (width, strength, gradient, etc.) of large cars. The same applies to elevated roads with a bridge structure.

For example, a small car has a width of 1.7 m, a length of 4.7 m, and a weight of about 1 t (1.5 t when riding), while a large car has a width of 2.5 m, a length of 12 m, The weight is also about 5 to 10 tons and sometimes exceeds 20 tons when loaded.
For this reason, it is uneconomical to construct a road in conformity with the standard for large vehicles in order to drive large vehicles of about 30% of all vehicles.

  Therefore, if a separate road for small cars (hereinafter referred to as a small road) is created separately from the regular roads for large cars, and the small cars and large cars are run separately, Although it will be a regular road, it will be possible to save space by reducing the travel lane for small roads, and it will be possible to reduce the cost because it can be made with strength that matches 1/10 of the load. .

By the way, the road structure ordinance was amended from July 24, 2003, and it became possible to introduce a passenger car road (small road). For example, a configuration has been proposed in which ordinary roads for large vehicles are arranged on both sides of a two-lane upper and lower passenger car-only road arranged in the center (see Non-Patent Document 1, for example).
However, in this configuration, since four lanes are arranged in a plane, the entire road width can be reduced only by reducing the width of the small road, and the overall width of the road is greatly reduced. Has not reached.

Magazine Road 2003-10 October 2003 Published by Japan Road Association. (Pages 40-42, Fig. 1)

  The present invention effectively introduces a small road in the width structure of a bridge, and obtains an elevated road for automobiles in which a small road and an ordinary road can be overlapped to greatly reduce the bridge main structure width and reduce the construction cost. With the goal.

  The main structure of the bridge is a multi-layer deck structure with three or more layers, and each deck has small roads or ordinary roads. Of the roads provided in multiple layers, at least two layers of the same road (small and small roads or ordinary and ordinary roads) Road) was a one-way road in the opposite direction without a central separation zone.

  In addition, it is a bridge structure used for an automobile elevated road with a small road and an ordinary road, and the main structure of the bridge can be provided with a deck of three or more layers. Alternatively, a small road was provided, and a horizontal girder was installed in the space where the deck was not arranged via an attachment plate, and a vertical girder was arranged in the horizontal girder so that a new deck could be added. .

In the present invention, the bridge main structure has a deck structure of three or more layers, and a small road and an ordinary road are provided overlapping each deck, so that the entire road width can be greatly reduced. In addition, it is reasonable to arrange small roads and ordinary roads in an effective combination, and lanes are set according to small cars on small roads and lanes according to large cars are set on ordinary roads. .
Furthermore, the ceiling height of the small road is set according to the small car, and the strength structure corresponding to the small car can be adopted, so that the road construction cost can be reduced.
Furthermore, roads can be added when the traffic volume increases in the future, and the main structure can be configured according to the planned traffic volume.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a cross-sectional view of a three-layer structure road showing an example of the present invention, FIG. 2 is a side view thereof, FIG. 3 is a cross-sectional view of a three-layer structure road to be added, and FIG.

In the figure, 1 indicates the main structure of the truss type bridge. 2 is the upper chord material of the main structure 1, and 3 is the lower chord material of the main structure 1. The upper chord material 2 and the lower chord material 3 are parallel and extend over the entire length in the bridge road direction. A truss material 4 connects the upper chord material 2 and the lower chord material 3.
Reference numeral 5 denotes a main beam arranged between the main structures 1 at an appropriate interval in the road direction, and reference numeral 6 denotes a vertical beam arranged between the horizontal beams 5. It is disposed in the upper layer, intermediate layer, and lower layer, forming a three-layer deck structure.

7 is an upper road formed by laying a base plate 8 on an upper deck and paving 9 on the base plate 8, 10 is a middle road constructed on the middle deck, and 11 is also a lower road. It is a lower road constructed on the deck.
Reference numeral 12 denotes a reinforcing steel deck attached to the back surface of the base plate 8.

Reference numeral 13 denotes a rail that is formed on both sides of the road in the road direction, and 14 is a central separation wall formed in the center of the road and in the road direction.
The road direction in the text is the direction as the road, that is, the traveling direction of the automobile, and the appropriate interval is a span interval appropriate for supporting the road. Moreover, although not shown in figure, the bridge main structure 1 is comprised as an elevated road mounted on the road pier as a whole, or applied to the suspension type bridge.

In FIG. 1, the upper-layer road 7 and the lower-layer road 11 are formed as one-way ordinary roads in the opposite direction without the central separation zone, and the middle-layer road 10 is formed as a small traffic road with a central separation zone. Thus, by providing a one-way road that does not have a central separation zone, the bridge main structure width can be kept small.
Of course, the upper and middle layers are set as ordinary roads and the lower layer is set as a small road as a modification of the arrangement.

  In this example, the middle-class small road has a separation zone A (1.500 mm) in the center, two small lanes B (3.250 mm) for driving a small car on both sides, and a shoulder C (1000 mm). The upper and lower ordinary roads are provided with two lanes E (3.500 mm) × 2 for traveling on large vehicles, and road shoulder portions F (1.750 mm) are provided on both sides thereof.

In FIG. 3, 15 is a flange provided on the truss member 4 of the bridge main structure, and 16 is an attachment plate, which shows a mounting structure of the cross beam 5 of the intermediate layer.
This is because the upper road 7 and the lower road 11 are formed at the beginning of the construction, and when the traffic volume increases in the future, the intermediate beam 5 is connected to the main structure 1 by the flange 15 and the attachment plate 16. The vertical girder 6 is disposed on the horizontal girder 5, the deck plate 8 is laid thereon, and the pavement 9 is applied to form the middle-level road 10.

  In this example, the upper road 7 has a separation zone D (1.700 mm) in the center, upper and lower lanes E (3.500 mm) × 2 for running a large vehicle on both sides, and a shoulder portion F (1 .750mm) is formed on a normal road for face-to-face traffic, and the middle-tier road 10 and lower-layer road 11 are provided with two lanes B (3.250mm) × 2 for traveling on small cars, and shoulder portions C (1.000mm) on both sides thereof It is formed on a one-way small road with The dimension display in the figure is equivalent to the dimension in FIG.

  By the way, in the case of this example, at the beginning of construction, that is, until the future mid-level road 10 is added in the future, both the upper-level road 7 and the lower-level road 11 are formed as ordinary roads where large and small cars can run together. The middle-layer road 10 and the lower-layer road 11 may be formed as small roads when the road is added.

1 and 3 show an example in which the middle-layer road 10 is a small road, the middle-layer road 10 may be a normal road, and the upper-layer road 7 and the lower-layer road 11 may be small roads.
In the figure, the road having a three-layer structure has been described, but a multi-layer structure can be obtained, and a greater effect can be obtained.

  For example, in the case of a four-layer structure, a normal road can be provided in the upper two layers, and a small road in the lower two layers can be provided as a one-way road in the opposite direction without a central separation zone. Can be reduced. In this case as well, it is considered to add a deck to form a four-layer structure as the traffic volume increases in the future.

As described above, the present invention has a configuration in which ordinary roads and small roads are stacked in three or more layers on a deck basis as described above, and therefore an elevated road for automobiles having a wide road width configuration in combination with an upper layer, a middle layer, and a lower layer. Can be obtained.
When the middle and lower roads are small roads, the characteristic that the height of the bridge main structure can be kept low can be obtained. In addition, if the bridge main structure is constructed so that decks can be added and roads are formed by adding decks in the future, it is possible to obtain a rational road configuration according to the step-by-step construction cost input and traffic volume. It has the characteristics.

Sectional drawing of the three-layer structure road which shows an example of this invention. The same side view. Sectional drawing of the three-layer structure road to expand. The same side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bridge main structure 2 Upper chord material 3 Lower chord material 4 Truss material 5 Horizontal girder 6 Vertical girder 7 Upper-layer road 8 Base plate 9 Pavement 10 Middle-layer road 11 Lower-layer road 12 Steel deck 13 Height rail 14 Central separation wall 15 Flange 16 Accession plate

Claims (2)

  The bridge main structure has a multi-layer deck structure with three or more layers, and each deck has small roads or ordinary roads. Of the roads provided in multiple layers, at least two layers of the same road are not provided with a central separation zone. An elevated road for automobiles with a small road and an ordinary road, which are characterized by a one-way road. The bridge main structure has a structure that can be equipped with three or more decks. Initially, ordinary decks or small roads are provided on the two or more decks, and the decks are placed horizontally via attachment plates. A bridge structure used for an elevated road for automobiles in which a small road and an ordinary road are overlapped and arranged such that a girder is arranged and a vertical girder is arranged in a horizontal girder and a deck can be added.

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