JPH07286308A - Erection structure of floor slab for bridge - Google Patents

Abstract

PURPOSE:To unify respective adjacent floor slabs as a unit in both lengthwise and breadthwise directions of a bridge, by constituting the floor slabs with parallelogram floor slabs with diagonal sides and isosceles triangle floor slabs and fastening the adjacent floor slabs in the breadthwise direction of the bridge by laterally fastening PC steel members. CONSTITUTION:A parallelogram floor slab 2 with four diagonal sides 1 is arranged so that a pair of tops 3 are positioned at the central part of the breadthwise direction of a bridge and tune floor slab 4 of the nearly isosceles triangle is inserted between the parallelogram floor slabs adjacent in the longitudinal direction of the bridge and laterally fastening PC steel members 5 are inserted over the adjacent floor slabs 2, 4 in the breadthwise direction of the bridge. the parallelogram floor slab 2 and the isosceles triangular floor slab 4 adjacent to each other in the breadthwise direction of the bridge are unified by the laterally fastening steel members 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bridge slab installation structure.

[0002]

2. Description of the Related Art Conventionally, as a bridge floor slab, one having a structure in which a large number of square floor slabs are placed on a support beam and fixed by bolts or the like is known.

[0003]

However, the above-mentioned conventional bridge floor slab construction structure has a drawback that adjacent floor slabs cannot be adhered to each other in the longitudinal and width directions of the bridge.

[0004]

In order to advantageously solve the above-mentioned problems, in a bridge floor slab erection structure of the present invention, a pair of parallelogrammic floor slabs 2 having four hypotenuses 1 are provided. The top portion 3 is arranged near the central portion in the width direction of the bridge, and approximately 2 between the parallelogram floor slabs 2 adjacent in the bridge longitudinal direction.
Insert an equilateral triangular slab 4 and insert a horizontally tightened PC steel material 5 across the slabs 2 and 4 that are adjacent to each other in the bridge width direction. The floor slab 2 and the isosceles triangular floor slab 4 are joined together. Also, a parallelogram floor slab 2 having four hypotenuses 1 is placed on a plurality of support beams 6 with a pair of tops 3 oriented in the bridge longitudinal direction and arranged in a plurality of rows in the bridge width direction. Then
The hypotenuses 1 of the parallelogram floor slabs 2 adjacent to each other in the bridge width direction are joined to each other, and two parallelepiped floor slabs 2 adjacent to each other in the bridge width direction are formed between the hypotenuses 1 of the parallelogram slabs 2 adjacent to each other in the bridge width direction. A floor slab 4, which is an equilateral triangle, is inserted, and the floor slabs 2 and 4 are adjacent to each other in the bridge width direction.
Horizontal tightening PC Steel material 5 is inserted across
The above-mentioned problem can be advantageously solved also by connecting the parallelogram floor slab 2 and the isosceles triangle floor slab 4 which are adjacent to each other in the bridge width direction by the steel material 5.

[0005]

1 to 9 show a parallelogram floor slab 2 used in the first embodiment of the present invention.
In a portion of the parallelogram floor slab body 7 made of reinforced concrete to be mounted on the support beam 6 composed of the main girders, a locking hole 9 for inserting the shift preventing member 8 is provided, and each of the oblique sides 1 A PC steel material insertion hole 10 for inserting the horizontally tightened PC steel material 5 is provided at a position passing through the central portion in the longitudinal direction,
In addition, a concave arc surface 11 is provided on the rear hypotenuse of the parallelogram floor slab 2.
And a convex arcuate surface 12 is provided on the front oblique side of the parallelogram floor slab 2.

10 to 12 show an isosceles triangle floor slab 4 used in the first embodiment of the present invention, in which a main girder is attached to a reinforced concrete isosceles triangle floor slab body 13. In the portion mounted on the support beam 6 made of, a locking hole 9 for inserting the shift preventing member 8 is provided, and the longitudinal center of each oblique side 14 of the isosceles triangular floor slab main body 13 is provided. A PC steel material insertion hole 15 for inserting the horizontally tightened PC steel material 5 is provided at a position passing through the section,
In addition, a concave arc surface 11 is provided on the rear oblique side of the isosceles triangular floor slab body 13, and a convex arc surface 12 is provided on the front oblique side of the isosceles triangular floor slab main body 13. The concave arcuate surface 11 and the convex arcuate surface 12 of the isosceles triangle floor slab body 13 that are adjacent to each other in the direction are fitted to each other. Further, a sidewalk 16 is integrally connected to an end portion on the wide side between a pair of oblique sides in the isosceles triangle slab main body 13.

1 to 6 show a bridge using the parallelogram floor slab 2 shown in FIGS. 7 to 9 and the isosceles triangular floor slab 4 shown in FIGS. 10 to 12. hand,
Several support beams 6 composed of main girders are arranged so as to extend in the front-rear direction, and are erected on the abutment or pier,
On the upper surface of the upper flange 17 of the support beam 6, a shift preventing member 8 having a head portion 18 at the upper end is fixed by welding at a position to be inserted into the locking hole 9, and further on the upper surface of the upper flange 17. A height adjusting mortar 19 made of super-fast curing Faber mortar is applied.

Next, the obtuse-angled tops of a large number of isosceles triangular floor slabs 4 are placed on the height adjusting mortar 19 so that the tops of the obtuse angles are located in the vicinity of the central portion in the width direction of the bridge, and the above-mentioned locks are placed. Non-shrinkable mortar 20 is filled in the stop hole 9,
Further, the isosceles triangle slab 4 is fitted into the V-shaped gap in the parallelogram slabs 2 adjacent to each other in the bridge longitudinal direction.

Next, the horizontally tightened PC steel material 5 is inserted through the PC steel material insertion holes 10 and 15 arranged in series in the bridge width direction in each floor slab 2 and 4, and the nut 21 screwed to the horizontally tightened PC steel material 5 is used. , Adjacent floor slabs 2 and 4 in the bridge width direction
Is horizontally tightened and the floor slabs 2 and 4 adjacent to each other in the bridge longitudinal direction are also pressed against each other by utilizing the slopes of the slopes 1 and 14.

In FIGS. 3 and 4, the support beam 6
Are bridged over the abutment or pier 22, and the adjacent support beams 6 are connected via a lower connecting member 23 and a brace 24.

FIGS. 13 to 16 show the construction structure of a bridge slab according to the second embodiment of the present invention, in which the obtuse-angled apex of the parallelogram slab 2 in three rows is in the bridge longitudinal direction. And the four hypotenuses 1 of each isosceles triangle slab 4 of the central row are joined to the pair of hypotenuses 1 of the parallelogram slabs 2 of the left and right rows. Floors 4 each having an isosceles triangle shape are fitted to a large number of V-shaped recesses provided on both sides in the bridge width direction, and each parallelogram floor slab 2 is adjacent in the bridge width direction. And the horizontal slab PC steel material 5 is inserted through the floor slab 4 of each isosceles triangle.
By the horizontally tightened PC steel material 5, each parallelogram floor slab 2 and isosceles triangle floor slab 4 which are adjacent in the width direction of the bridge, and parallelogram floor slabs 2 and 2 isosceles 3 which are adjacent in the bridge longitudinal direction are provided. The rectangular floor slab 4 is tightened and coupled by the tightening force of the laterally tightened PC steel material 5, but the other configurations are the same as the first embodiment.
This is similar to the case of the embodiment.

[0012]

According to the present invention, a parallelogram floor slab 2 having four hypotenuses 1 is arranged with a pair of tops 3 near the central portion in the bridge width direction, and the parallels adjacent to each other in the bridge longitudinal direction are arranged. A substantially isosceles triangular floor slab 4 is fitted between the quadrilateral floor slabs 2, and the horizontal fastening PC steel material 5 is inserted through the floor slabs 2 and 4 adjacent in the bridge width direction. By connecting the parallelogram floor slab 2 and the isosceles triangle slab 4 which are adjacent to each other in the bridge width direction, or by connecting the parallelogram slab 2 having four oblique sides 1 to the pair of tops 3. Of the parallelogram floor slabs 2 that are adjacent to each other in the bridge width direction and are mounted on the plurality of support beams 6 so that they are oriented in the bridge longitudinal direction and arranged in a plurality of rows in the bridge width direction. Of the parallelepiped floor slabs 2 that are adjacent to each other in the bridge width direction and that are adjacent to each other in the bridge width direction. Then, the isosceles triangular floor slab 4 is inserted, and the horizontally tightened PC steel material 5 is inserted over the floor slabs 2 and 4 that are adjacent to each other in the bridge width direction. Since the slabs 2 of the quadrangle and the slabs 4 of the isosceles triangle are combined, the slabs 2 and 4 adjacent to each other in the bridge width direction and the slabs 2 and 4 adjacent to each other in the bridge width direction can be simply combined. Can be tightly coupled with each other.

[Brief description of drawings]

FIG. 1 is a plan view showing a part of an erection structure of a bridge deck according to a first embodiment of the present invention.

FIG. 2 is a plan view showing a part of FIG. 1 in an enlarged manner.

FIG. 3 is a vertical sectional front view showing the construction structure of the bridge slab according to the first embodiment of the present invention.

FIG. 4 is a vertical sectional front view showing a left end portion of FIG. 3 in an enlarged manner.

FIG. 5 is a vertical cross-sectional front view showing an insertion portion of a horizontally tightened PC steel material and a shift prevention portion of a bridge floor slab.

6 is a plan view of a portion shown in FIG.

FIG. 7 is a plan view showing a parallelogram floor slab.

8 is a cross-sectional view taken along the line AA of FIG.

FIG. 9 is a vertical cross-sectional side view showing a state where parallelogrammic floor slabs adjacent to each other in the bridge longitudinal direction are fitted to each other.

FIG. 10 is a plan view showing an isosceles triangle slab.

11 is a sectional view taken along line BB of FIG.

FIG. 12 is a vertical cross-sectional side view showing a state where a parallelogrammatic slab and an isosceles triangular slab that are adjacent to each other in the bridge longitudinal direction are fitted to each other.

FIG. 13 is a plan view showing a construction structure of a bridge deck according to a second embodiment of the present invention.

FIG. 14 is a plan view showing a part of FIG. 13 in an enlarged manner.

FIG. 15 is a vertical cross-sectional front view showing the construction structure of the bridge slab according to the second embodiment of the present invention.

16 is a vertical cross-sectional front view showing a part of FIG. 15 in an enlarged manner.

[Explanation of symbols]

 1 hypotenuse 2 parallelogram slab 3 top 4 2 equilateral triangle slab 5 lateral tightening PC steel 6 support beam 7 parallelogram slab main body 8 slip prevention member 9 locking hole 10 PC steel insertion hole 11 concave Arc surface 12 Convex arc surface 13 2 Equilateral triangular slab body 14 Hypotenus 15 PC steel insertion hole 16 Sidewalk 17 Upper flange 18 Head 19 Mortar for height adjustment 20 Mortar 21 Nut 22 Abutment or bridge pier 23 Lower connecting material 24 Braces

Front page continuation (72) Inventor Tsuyoshi Uchiyama 2-39-5-101 Ishihara-cho Kawagoe-shi, Saitama

Claims (2)

[Claims] 1. A parallelogram floor slab 2 having four parallelepipeds 1 in which a pair of tops 3 are arranged in the vicinity of a central portion in the bridge width direction and which are adjacent to each other in the bridge longitudinal direction. Between the floors, an isosceles triangular floor slab 4 is inserted, and a horizontally tightened PC steel material 5 is inserted over the floor slabs 2 and 4 adjacent to each other in the bridge width direction. A bridge slab erection structure in which adjacent parallelogram slabs 2 and isosceles triangular slabs 4 are joined together. 2. A parallelogram floor slab 2 having four hypotenuses 1 with a pair of tops 3 oriented in the bridge longitudinal direction and a plurality of support beams 6 arranged in a plurality of rows in the bridge width direction.
The parallelogram floor slabs 2 that are adjacent to each other in the bridge width direction are formed by joining the hypotenuses 1 of the parallelogram floor slabs 2 that are adjacent to each other in the bridge width direction to each other. The isosceles triangular slab 4 is inserted between the hypotenuses 1, and the horizontally tightened PC steel material 5 is inserted across the slabs 2 and 4 adjacent in the bridge width direction.
A bridge floor slab erection structure in which a parallelogrammatic floor slab 2 and an isosceles triangular floor slab 4 which are adjacent to each other in the bridge width direction are joined by the horizontally tightened PC steel material 5.