JPH08333722A - Erection structure of floor slab for bridge - Google Patents

Abstract

PURPOSE: To prevent any lost motion from occurring by way of forming a floor slab for a bridge into an isosceles triangle as well as to connect and integrate two isosceles triangular floor slabs adjacent in the bridge longitudinal direction through lateral tightening prestressed concrete structural steel. CONSTITUTION: In a lot of isosceles triangular floor slabs 1, these apexes are set up so as to be alternately turned to one side and the other side in the bridge cross direction, and they are mounted on plural pieces of support beams. Lateral tightening PC structural steel 3 is inserted through over two isosceles triangular floor slabs 1 adjacent in the bridge longitudinal direction, and with the PC structural steel 3, the isosceles triangular floor slabs 1 adjacent in the bridge longitudinal direction are connected together.

Description

Detailed Description of the Invention

[0001]

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

[0002]

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

[0003]

In the case of the conventional bridge floor slab installation structure, there is a drawback in 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 the bridge floor slab erection structure of the present invention, a large number of isosceles triangular slabs 1 are alternately arranged at their tops. Are arranged so that one side and the other side in the bridge width direction are faced, placed on a plurality of support beams 2, and horizontally tightened across isosceles triangular floor slabs 1 that are adjacent in the bridge longitudinal direction. The steel material 3 is inserted, and the laterally tightened PC steel material 3 joins the isosceles triangular floor slabs 1 adjacent to each other in the bridge longitudinal direction.

[0005]

7 to 9 show an isosceles triangular floor slab 1 used in the first embodiment of the present invention.
That is, FIG. 7 is a plan view showing an isosceles triangle slab, and FIG.
7 is a cross-sectional view taken along the line AA in FIG. 7, and FIG. 9 is a vertical cross-sectional side view showing a state in which isosceles triangular slabs adjacent to each other in the longitudinal direction of the bridge are fitted to each other.
The square floor slab body 4 is provided with a locking hole 6 for inserting a shift preventing member 5 described later in a portion to be mounted on a support beam 2 composed of a main girder described later, and the isosceles triangle A PC steel material insertion hole 8 for inserting the horizontally tightened PC steel material 3 is provided at a position passing through the longitudinal center of each hypotenuse 7 of the floor slab body 4, and one of the isosceles triangular floor slab body 4 is provided. Is provided with a concave arc surface 9 on the oblique side, and is provided with a convex arc surface 10 on the other oblique side of the isosceles triangular plate slab body 4, and the isosceles triangular plate slab body is adjacent in the longitudinal direction of the bridge. The concave arc surface 9 and the convex arc surface 4 of 4 are fitted to each other. A sidewalk 11 is integrally connected to the wide end between the pair of oblique sides in the isosceles triangle slab main body 4.

1 to 6 show a bridge sill using the isosceles triangular slab 1 shown in FIGS. 7 to 9, that is, FIG. 1 relates to a first embodiment of the present invention. FIG. 2 is a plan view showing a part of the erection structure of the bridge slab, FIG. 2 is an enlarged plan view of a part of FIG. 1, and FIG. 3 is a erection structure of the bridge slab according to the first embodiment of the present invention. FIG. 4 is a vertical sectional front view showing FIG.
Figure 5 is an enlarged vertical front view of the left end of the
FIG. 6 is a vertical sectional front view showing the steel insertion portion and the slip-prevention portion of the bridge deck, and FIG. 6 is a plan view of the portion shown in FIG. Is arranged so as to extend in the direction, is installed on the abutment or pier, and is inserted into the locking hole 6 provided in the isosceles triangle slab 1 on the upper surface of the upper flange 12 of the support beam 2, A shift preventing member 5 having a head portion 13 is fixed to the upper portion by welding, and a height adjusting mortar 14 made of super-fast curing Faber mortar is applied to the upper surface of the upper flange 12.

Next, a large number of isosceles triangular slabs 1 are provided at the tops of the respective support beams 2 with their apexes, that is, the narrow ends alternately with one side and the other side in the bridge width direction. Is placed on the mortar 14 for adjusting the height of each support beam 2, and each shift prevention member 5 is inserted into the locking hole 6 in each isosceles triangular floor slab 1. To be done.

Next, the non-shrinkable mortar 15 is filled in the engaging hole 6, and the PC steel material through holes 8 are arranged in series in the bridge width direction in the isosceles triangular floor slab 1 adjacent in the bridge longitudinal direction. Insert the horizontally tightened PC steel material 3 into the
The isosceles triangular floor slabs 1 that are adjacent to each other in the bridge longitudinal direction are laterally tightened by the nuts 16 screwed to the ends of the C steel material 3. 3 and 4, the support beams 2 are installed over the abutments or piers 17 and are adjacent to each other.
Are connected via an F portion connecting member 18 and a brace 19.

10 to 13 show the construction structure of a bridge slab according to the second embodiment of the present invention, that is, FIG. 10 shows the construction of a bridge slab according to the second embodiment. FIG. 11 is a plan view showing a structure, FIG. 11 is an enlarged plan view showing a part of FIG. 10, FIG. 12 is a vertical cross-sectional front view showing an erection structure of a bridge deck, and FIG. 13 is a partly enlarged view of FIG. FIG. 2 is a vertical sectional front view showing, in this embodiment, an isosceles triangular slab 1 made of a regular triangular plate body is arranged in two rows, and the top of the isosceles triangular slab 1 is a bridge. Although they are arranged so as to alternately face one side portion and the other side portion in the width direction, the other configurations are the same as in the case of the first embodiment. Incidentally, the erection structure of the bridge floor slab of the present invention is not limited to the bridge,
It can be applied to all road slabs, drainage linings, airport runways and aprons, floor slabs for gymnasiums, warehouses, factories, etc., plate constructions such as shets, shield elements, curtain walls, etc. it can.

[0010]

According to the present invention, a large number of isosceles triangular floor slabs 1 are arranged such that the tops thereof alternately face one side and the other side in the width direction of the bridge. It is placed on the support beam 2 and the laterally tightened PC steel material 3 is inserted through the isosceles triangular slabs 1 that are adjacent to each other in the longitudinal direction of the bridge.
Since the isosceles triangle slabs 1 adjacent to each other in the longitudinal direction of the bridge are joined by, the isosceles triangle slab 1 is supported by three points, so that a vehicle such as an automobile rides on the isosceles triangle slab 1. However, the isosceles triangle slab 1 does not rattle, and a large number of isosceles triangle slabs 1 face alternately to one side portion and the other side portion in the bridge width direction. A large number of isosceles triangle slabs 1 can be easily installed and fixed by arranging and fixing them to each other, and further, the isosceles triangle slabs 1 adjacent to each other in the longitudinal direction of the bridge are laterally tightened with PC steel material. Since it is laterally tightened by 3, each isosceles triangular slab 1 can be strongly integrated.

[Brief description of drawings]

FIG. 1 is a plan view showing a part of the construction structure of a bridge slab floor slab 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 an isosceles triangular 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 isosceles triangular slabs adjacent to each other in the bridge longitudinal direction are fitted to each other.

FIG. 10 is a plan view showing a construction structure of a bridge deck according to a second embodiment of the present invention.

FIG. 11 is a plan view showing a part of FIG. 10 in an enlarged manner.

FIG. 12 is a vertical sectional front view showing a construction structure of a bridge slab floor slab according to a second embodiment of the present invention.

FIG. 13 is a vertical sectional front view showing a part of FIG. 12 in an enlarged manner.

[Explanation of symbols]

 1 2 isosceles triangular slab 2 support beam 3 lateral tightening PC steel 4 2 2 equilateral triangle slab main body 5 misalignment member 6 locking hole 7 oblique side 8 PC steel insertion hole 9 concave arc surface 10 convex arc surface 11 sidewalk 12 Upper flange 13 Head 14 Height adjusting mortar 15 Mortar 16 Nut 17 Abutment or pier 18 Lower connecting material 19 Brace

Claims (1)

[Claims] 1. A large number of isosceles triangular slabs 1 are arranged on a plurality of support beams 2 with their tops alternately facing one side and the other side in the width direction of the bridge. Place it and insert the horizontally tightened PC steel material 3 over the isosceles triangular slabs 1 that are adjacent to each other in the longitudinal direction of the bridge and connect the isosceles triangular slabs 1 that are adjacent to each other in the bridge longitudinal direction by the horizontally tightened PC steel material 3. The construction structure of the slab for bridges.