JPS5910441B2 - Fixing method for floor slabs - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of joining reinforcing bars in a mesh shape and then fixing and joining a plurality of deck slabs formed by pouring concrete in parallel in the width direction.

Conventionally, a plurality of supporting members such as type steel were fixed to the upper surface of a main rod made of concrete, etc., and a plurality of unitized floor slabs were placed side by side on top of this to form the floor of a bridge, etc. In this case, a method is required in which the above-mentioned deck slabs are arranged side by side on the upper surface of a support member such as I-shaped steel, fixed, and joined.

The present invention was invented in view of the above circumstances, and it is possible to easily and reliably fix a deck slab to the upper surface of a support member such as an I-shaped steel at a work site, to achieve a good synthetic effect between the main rod and the deck slab, and to provide a good combination of the main rod and the deck slab. The aim is to provide a method of fixing and joining that is strong even when a strong load is applied to the floor slab.

Hereinafter, the fixed joining method of the present invention will be explained in detail based on one embodiment with reference to the drawings.

FIG. 1 shows the method of the present invention being used to fix the
Also, a perspective view of a plurality of floor slabs arranged in parallel and joined together is shown.

FIG. 2 is a perspective view of a unitized floor slab used in the present invention, and FIG. 3 is a perspective view of a support member on which the floor slab is placed.

In the figure, 1 is a floor slab 1 that is made into a unit by joining reinforcing bars in a mesh shape and pouring concrete with these reinforcing bars buried. It is formed by pouring concrete leaving a hollow groove 2 of an appropriate width extending along the groove.

Also, from the front end surface 3 to the rear end surface 4 of the floor slab 1,
A large number of elongated tubular members 5 such as sheath pipes are passed through the pipe at regular intervals, avoiding the reinforcing bars 6.

An end surface 3 on the front side and an end surface 4 on the rear side of the floor slab 1 are inclined in a direction in which the lower surface widens along the longitudinal end surface, forming an inclined surface.

That is, the end surfaces 3 and 4 that face each other when the floor slabs 1 are arranged side by side are formed to be inclined so that the width between these end surfaces 3 and 40 becomes narrower toward the bottom.

After the floor slab 1 constructed in this manner is manufactured in a factory or the like, it is transported to the site.

The support member 7 on which the floor slab 1 is placed is made of I-beam steel, and a needle is provided on the upper surface 8 of the support member 7, which can be inserted between the reinforcing bars 6, 6 exposed in the hollow groove 2 of the floor slab 1. A large number of members 9 are protruded at predetermined intervals.

Next, the floor slab 1 formed as described above is placed on the supporting member 7.
We will explain how to fix it.

For example, when forming the floor of a bridge, etc., the main rod (not shown)
The supporting members 7 are fixed to the upper surface of the holder 7 in a state in which they are arranged side by side at regular intervals.

Then, a needle member 9 is interposed between the reinforcing bars 6, 6 of each hollow groove 2 of the floor slab 1 above the support member 7, and a frame is passed between the support members 7. The mutually opposing end surfaces 3,4 of the plate 1 are brought into contact with each other to form a V-shaped groove 11 between these opposing end surfaces 3,40.

Next, wires 10 (piano training, etc.) may be used for each of the plurality of tubular members 5 of each floor slab 1°1 arranged in parallel as described above.

), connect each floor slab 1, 1 with a wire 10, and fill the V-shaped groove 11 with concrete,
Then, by applying a strong tensile force to the wire 10, a prestress is applied to each connected deck slab 1, 10 in the width direction.

After applying prestress as described above, the hollow groove 2 is filled with concrete to complete the joining of the respective floor slabs 1, 1.

Similarly, after the groove portion 11 or the hollow groove 2 is filled with concrete, a prestress may be applied before the concrete hardens.

By joining the floor slabs 1 in this way, each floor can be assembled by simply passing the floor slab 1 over the supporting member T and abutting the opposing end surfaces 3 and 4 of the floor slab 1 against each other. Edition 1
A V-shaped groove 11 that can easily serve as a joint can be provided between the two, and this groove 11 can be filled with concrete.
Particularly, there is no need for bottom formwork for joints, concrete can be easily filled between the floor slabs 1 and 10, and work efficiency on site can be improved.

Furthermore, the concrete filled in this V-shaped groove 11 facilitates the introduction of prestress, and also allows the adjacent slabs 1, 1 to be more firmly integrated, and prevents defects such as cracks from occurring at the joints. do not have.

Moreover, since the hollow groove 2 is filled with concrete with the needle member 9 interposed in the hollow groove 2, the floor slab 1 and the support member 7 are well integrated.

FIG. 5 shows an example of fixed connection using the present invention when the floor slab 1 is used in an inclined manner.

Support members 7, 7 rest in parallel on a flat main rod (not shown).

The floor slab 1 is firmly fixed on the support member 7 by protruding the needle member 9 to an appropriate length according to the height of the slope and using the above-mentioned joining method.

The present invention can also be applied to a slab made by prestressing with P and C wires instead of a slab formed by joining reinforcing bars in a mesh shape and pouring concrete.

As mentioned above, this invention joins reinforcing bars in a mesh shape,
In the case where a plurality of floor slabs formed by pouring concrete are arranged and fixed in parallel with both side end surfaces along the width direction of the floor slab facing each other, Leaving a hollow groove of an appropriate width, the floor slab is placed on the support member with the hollow groove interposed in a needle member protruding from the upper surface of the support member such as shaped steel, and concrete is placed in the hollow groove of the floor slab. Because it is a method of filling and fixing, it is possible to easily securely fix the deck slab to the top surface of supporting members such as molded steel at the work site, and the composite effect of the main rod and the deck slab is also good. .

Further, in the present invention, the end faces of the floor slab facing each other are formed so as to be inclined in advance so that the width between these end faces becomes narrower toward the bottom, and then the end faces of the floor slab facing each other are After abutting against each other to form a V-shaped groove between the opposing end surfaces, wires are passed through a large number of sheath pipes etc. buried in the width direction of the floor slab, and the wires are connected between each floor slab to form this V-shaped groove. The grooves of the floor slabs are filled with concrete, and the wires are pre-stressed by applying tensile force to connect them, so there is no need for formwork for joints, and it is easy to connect between the slabs at the work site. In addition to filling the joints with concrete, the slabs can be firmly fixed together through these joints, and a strong joint can be easily obtained even when a strong load is applied.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is an overall perspective view showing one embodiment of the present invention, Fig. 2 is a perspective view of a floor slab, Fig. 3 is a perspective view of a support member with a protruding needle member, 4 is a longitudinal sectional view taken along the line I--■ in FIG. 1, and FIG. 5 is a longitudinal sectional view showing an example of application using the present invention. 1... Floor slab, 2... Hollow groove, 3... End surface, 4...
・End face, 5... Tubular member, 7... Supporting member, 9...
- Needle member, 11... Groove.

Claims (1)

[Claims] 1 A plurality of floor slabs 1 formed by joining reinforcing bars in a mesh shape and pouring concrete are arranged and fixed in parallel with both side end surfaces 3 and 4 along the width direction of the floor slab 1 facing each other. In the product, hollow grooves 2 extending along the connection direction of the floor slab are formed on both sides of the floor slab in the width direction, and
The end faces 3 and 4 of the floor slab facing each other are formed in advance so that the width between these end faces becomes narrower toward the bottom, and then a hollow groove of the floor slab is formed in the supporting member 7. A needle member 9 protruding from the upper surface 8 is interposed to pass the floor slab between the supporting member and the support member, and the opposing end faces of the floor slab are brought into contact with each other to create a bridge between these opposing end faces. After forming the V-shaped groove 11, the wire 10 is passed through a plurality of tubular members 7 such as sheath pipes buried along the connection direction of the floor slabs, and the wires are connected between each floor slab, thereby forming the V-shaped groove 11. The fixed joining of the floor slabs is characterized in that the grooves 11 of the floor slabs are filled with concrete, and the wires are connected by applying prestress by applying tensile force, and furthermore, the hollow grooves of the floor slabs are filled with concrete. Method.