JPH10280305A - Overhanging sidewalk structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an overhanging sidewalk which is simplified in the structure and excellent in vibration-resistance and whose material cost can be economized. SOLUTION: A support 4 erected on the forward ground of the lower part of a slope 2 and a slab receive base 5 installed on the upper part of the slope 2 are connected by the bracings 7A, 7B in the plane of the front and rear direction, between the support and the base. And adjacent supports 4, 4 in the right and left direction are connected by the bracings 6A, 6B in the plane of the right and left direction, between these supports. The forward edge 9a of the sidewalk slab is connected onto the slab receive 8 on the support 4 and the rearward edge 9b of the sidewalk slab is connected onto the slab receive 5 with connection inserts and bolts respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sidewalk structure which is used to protrude and install a sidewalk on a narrow road such as a mountainous area, a hill or an urban area.

[0002]

2. Description of the Related Art Separation of sidewalks and roads is demanded from the viewpoint of ensuring traffic safety. However, on narrow roads, roadway sites are prioritized and occupy most of the width of roads. Space is just enough to pass by each person. In such a sidewalk, when a pedestrian or a bicycle passes each other, one of the pedestrian or the bicycle may step into the lane, causing a danger of contact with the vehicle.

[0003] For this reason, on a road formed on an upper part of a slope, a necessary and sufficient width of the sidewalk is secured by protruding and installing a sidewalk in front of the slope. This overhanging sidewalk clarifies the separation of the sidewalk, and effectively utilizes the upward space, such as a private lot or an irrigation canal adjacent to the slope.

[0004]

Problems to be solved in such overhanging sidewalks are not only the structural strength during normal operation but also the safety when seismic motion acts. However, when the shape and structure are complicated to improve the earthquake resistance, there is a problem that not only the workability of the construction is deteriorated but also the material cost is increased.

Accordingly, it is an object of the present invention to provide an overhanging sidewalk structure which is structurally simplified, can reduce material costs, and is excellent in earthquake resistance.

[0006]

Means for Solving the Problems Hereinafter, a description will be given using reference numerals in the accompanying drawings. In the overhanging sidewalk structure of the present invention, a plurality of roads 1 are formed on a lower front ground 3 of a slope 2 on which a road 1 is formed. The support columns 4 are arranged side by side along the slope 2 at a predetermined interval, and a plurality of slab receivers 5 are arranged above the slope 2 along the roadway 1 at a predetermined interval. The stake 29 is buried, and the columns 4 and 4 adjacent to each other in the left-right direction are connected by brace members 6A and 6B in the left-right direction plane,
The support 4 and the slab support 5 and the stake 29 which are arranged opposite to each other in the front-rear direction are connected by brace members 7A and 7B in the front-rear direction plane, and the slab support is provided over the left and right side surfaces and the rear side of the upper end of each support 4. 8, the front side edge and the rear side edge of the sidewalk slab 9 are placed on the slab receiving portion 8 and the slab receiving base 5, respectively, and connected by connecting inserts and bolts. The guard fence 10 is erected on the front side edge of the vehicle.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiment, as shown in FIG. 2, a retaining wall block 11 is constructed on the slope 2 over the entire height of a lower portion or an upper portion. The reinforced concrete column 4 is excavated in the target ground 3 and is vertically installed. In order to increase the seismic resistance, the embedding portion of the column 4 is wrapped around with concrete or reinforced concrete. As shown in FIG. 7, the slab support 5 made of reinforced concrete is one in which the support for the sidewalk slab 9 and the pedestrian boundary are integrated. The slab cradle 5 is supported by a foundation stone layer 13 and a foundation concrete layer 14 excavated and constructed at the boundary with the road 1, and a mortar 15 is provided between the slab cradle 5 and the foundation concrete layer 14. I have.

If there is a possibility that the slab support may be displaced from the foundation due to an earthquake or the like, a positioning round steel 16 is planted on the foundation stone layer 13 and the foundation concrete layer 14 and the round steel 16 is positioned.
Can be connected to the vertical hole 17 of the slab support 5 to connect the foundation to the slab support 5. Slab cradle 5
The rear edge 9 of the sidewalk slab 9 made of reinforced concrete
The step portion 5a on which b is placed is provided in the left-right lateral direction, and a nut-type connecting insert 18 is embedded in the step portion 5a. By screwing the connecting bolt 20 into the connecting insert 18 from the vertical hole 19 of the rear edge 9b,
The sidewalk slab 9 is rigidly connected to the slab cradle 5 to improve the earthquake resistance. The upper surface of the sidewalk slab 9 may be flat, but it is also possible to apply a non-slip process for rainy weather or to apply makeup from an external appearance. Examples of the makeup work include putting a brick or an interlocking block material on the upper surface of the sidewalk slab or performing a washing finish process.

As shown in FIG. 9, rectangular upper ends 4a of the columns 4 projecting from the upper surface of the center of the slab receiving portion 8 are fitted to the right and left ends of the front edge 9a of the sidewalk slab 9 so as to fit. A notch 9c having a shape is provided. As shown in FIGS. 6 and 8, the front edge 9a of the sidewalk slab 9 is located close to the notch 9c.
Is provided with a tapered through hole 21 whose diameter is reduced from the upper surface side to the lower surface side. At the left and right ends of the slab receiver 8,
A connecting bolt 22 composed of an anchor bolt is embedded. When placing the sidewalk slab 9 on the slab receiving portion 8 of the column 4, the vertical threaded rod portion 22 a of the connecting bolt 22 is inserted into the tapered through hole 21. The vertical threaded rod part 2
2a is fitted with a disc-shaped connecting insert 23, and the connecting insert 23 is fixed at a required position with two upper and lower setting nuts 24, and then the mortar or concrete 25 is filled into the tapered through-hole 21 so that the sidewalk is formed. The working slab 9 is connected to the column 4.

In such a coupling structure, the vertical threaded rod portion 22a of the connecting bolt 22 on the side of the column 4 is connected to the sidewalk slab 9
The slab 9 for the sidewalk is prevented from moving out of the slab 9 because the movement of the sidewalk slab 9 is accurately prevented by the inverted frustoconical mortar or concrete body hardened in the tapered through hole 21 and the connecting insert 23 embedded therein. 4, it is rigidly connected, and the earthquake resistance is improved.

A socket hole or socket insert 26 into which the column 10a of the guard fence 10 for preventing a pedestrian from falling is provided at the rectangular upper end 4a of the column 4. The gap between the socket or socket insert 26 and the fence post 10a is filled with mortar or the like, and the fence post 10a is rigidly connected to the sidewalk support 4. A socket hole or socket insert 28 into which the column 27 a of the guardrail 27 is fitted is provided in the pedestrian road boundary portion of the slab support 5. The socket or socket insert 28 and the guardrail post 27
Mortar or the like is filled in the gap between the guard rails a, and the guardrail support 27a is rigidly connected to the slab support 5. The slab receiving table 5 has openings 30 for road surface drainage at intervals of 10 to 20 m.
Is provided. In the sidewalk boundary part of the slab cradle 5,
A fence can be installed at the border between the road and the sidewalk.

[0012] For example, stay pile 29 made of reinforced concrete
Is buried in the lower rear ground of the slope 1 at the stage before the construction of the retaining wall block 11, and the lower end of the steel bar brace member 7 </ b> B is connected to the stay pile 29 as shown in FIG. 2. The brace member 7 </ b> B is pulled out from the slope 1, and the upper end is joined to the upper part of the support 4. The upper end of another steel bar brace member 7A is embedded and connected to the slab support 5, and the lower end Ba of the brace member 7A is connected to the base of the column 4. As shown in FIG. 1, the upper end of the steel bar brace member 6A is connected to the upper part of the left column 4, and the lower end of the brace member 6A is connected to the base of the right column 4. The upper end of another steel bar brace member 6B is connected to the upper part of the right column 4, and the lower end of the brace member 6B is connected to the root of the left column 4.

The column 4 and the brace members 6A, 6B, 7A, 7
The connection with B is performed by burying an anchor bolt on the support column side, welding an end plate to each end of the brace member, fitting a screw rod portion of the anchor bolt into a receiving hole of the end plate, A known coupling method, such as fitting a retaining nut into the nut, is appropriately selected and used. Known members such as a wire rope and a steel strip may be appropriately selected and used as the bracing members in addition to the steel rods.

[0014]

According to the overhanging sidewalk structure of the present invention configured as described above, the distance between the support 4 installed on the lower front ground 2 of the slope 2 and the slab receiving table 5 installed on the upper part of the slope 2 is increased. Brace members 7A and 7B in the direction plane are connected, while struts 4 and 4 adjacent to the left and right are connected by brace members 6A and 6B in the left and right direction plane, and front edge 9a of sidewalk slab 9 is supported by the struts. 4 is connected to the upper slab receiving portion 8 by the connecting insert 23 and the bolt 22, and the rear edge 9 b of the sidewalk slab 9 is connected to the slab receiving base 5 by the connecting insert 18 and the bolt 20. It has sufficient and strong earthquake resistance against seismic waves propagating from each direction.

The provision of the earthquake resistance is achieved by the brace members 6A and 6B in the left-right plane and the brace members 7 in the front-rear plane.
Since it is done only by adding A and 7B,
The shape and structure are simplified, and material costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a front view of an installed state of an overhanging sidewalk structure according to an embodiment of the present invention.

FIG. 2 is a right side view of the sidewalk structure.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a plan view of the sidewalk structure with a sidewalk slab installed.

FIG. 5 is a plan view of the sidewalk structure without a sidewalk slab.

FIG. 6 is a sectional view taken along line BB of FIG. 4;

FIG. 7 is a sectional view taken along line CC of FIG. 4;

FIG. 8 is a sectional view taken along line DD of FIG. 6;

FIG. 9 is an enlarged plan view of a joint between a pillar of the sidewalk structure and a sidewalk slab.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roadway 2 Slope 3 Lower front ground of slope 4 Strut 5 Slab cradle 6A Brace member in horizontal plane 6B Brace member in horizontal plane 7A Brace member in horizontal plane 7A Brace member in horizontal plane 8 Post Slab receiving part 9 Sidewalk slab 10 Guard fence 11 Retaining wall block 12 Nemaki concrete 13 Foundation chestnut stone layer 14 Foundation concrete layer 15 Floor mortar 16 Positioning round bar 17 Vertical hole 18 Connecting insert 19 Vertical hole 20 Connecting bolt 21 Tapered through hole 22 Connecting bolt 23 Connecting insert 24 Nut for setting 25 Filling concrete 26 Socket insert for guard fence post 27 Guard rail 28 Socket insert for guard rail post 29 Counter pile 30 Opening for road surface drainage

Claims (1)

[Claims] 1. A plurality of struts 4 are arranged at predetermined intervals along the slope 2 on a lower front ground 3 of a slope 2 on which a roadway 1 is formed. The bases 5 are arranged side by side along the road 1 at predetermined intervals, and the stay piles 29 are buried in the lower rear ground of the slope 2, and the columns 4, which are adjacent in the left-right direction,
4 are connected to each other by brace members 6A and 6B in the left-right direction plane, and the strut 4 and the slab receiving table 5 and the stay pile 29, which are arranged to face each other in the front-rear direction, are connected to the brace member 7 in the front-rear direction plane.
A and 7B are connected to each other, and a slab receiving portion 8 is formed so as to protrude from the left and right side surfaces and the back side of the upper end portion of each column 4, and the slab receiving portion 8 and the slab receiving table 5 are connected to the front side edge of the sidewalk slab 9 and An overhanging sidewalk structure in which a rear side edge is placed and connected by a connecting insert and a bolt, and a guard fence 10 is erected on the front side edge of the sidewalk slab 9.