JPH0730596B2 - Deck plate end opening closure processing method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a processing method for laying concrete and closing longitudinal end openings of a deck plate integrally formed to form a synthetic floorboard structure.

(Prior Art) In recent years, a synthetic floorboard structure in which concrete and a deck plate are integrated has been widely used as a floor structure of a building.

In this structure, as shown in FIG. 5, the deck plate 1 is arranged on the steel beam 3, and the concrete 4 is arranged on the deck plate 1.
However, since the longitudinal end 16 of the deck plate 1 is generally open, the concrete 4 may intrude below the deck plate from the end when laying concrete. Therefore, the construction is performed so as to be closed by a lid (not shown), but it is extremely difficult to perform the closing work with the lid at the open end on the steel beam.

Therefore, it is currently proposed that the deck plate is formed into a uniform cross section in the longitudinal direction, and then the open end of the deck plate is closed (end closed).

(Problems to be Solved by the Invention) However, the deck plate 1 is generally formed at regular intervals in the width direction, and the peak strips 11 and the valley strips 12 extending in the longitudinal direction are connected by the inclined web 13. Since it has the reinforcing portions 14 that engage with the widthwise ends of the deck plate adjacent to the widthwise both ends, the end openings 16 are flatly closed even if the peak strips 11 are simply crushed. Difficult to do.

Therefore, as shown in FIGS. 6 and 7, a processing method has been proposed in which the raised portion 11b is formed so as to absorb the excess plate when crushed (see Japanese Patent Laid-Open No. 55-64929, etc.). ), There is a problem that since the excess board cannot be absorbed, the opening remains and concrete leaks.

In view of such problems, it is an object of the present invention to provide an opening end portion closing processing method that is excellent in productivity.

(Means for Solving the Problem) As a result of intensive research to solve the above-mentioned problems, the present inventor, when crushing the end 11a of the ridge strip 11 to the inclined surface 17,
When the inclined webs 13 and 13 are folded inward and folded, the folding amount gradually increases toward the end 11a, and as a result, it is possible to comfortably absorb the surplus plate generated and the end opening 16
The present invention has been completed, paying attention to the fact that the ridge portion 11 is reasonably closed by the inclined surface 17 that is inclined downward.

Therefore, according to the method for closing the end opening of the deck plate according to the present invention, when closing at least one of the opening ends 16 in the longitudinal direction of the deck plate 1, a pair of opposite slopes that support the ridge strip 11 are provided. While restraining the webs (13, 13) by the inclined restraining surfaces (23a, 23a) on the outside thereof, the longitudinal end portion (11a) of the ridge portion strip (11a) and the vicinity thereof are inclined and pressed downward, and the ridge portion strip (11) extends from the longitudinal end portion. An inclined surface 17 that gradually inclines downward toward the upper surface, and the inclined webs 13 and 13 are folded inward in the width direction and folded.
Along the edge of the folding part and the widthwise inner end side of the folding part is inclined downward, while the rising reinforcement part in the widthwise direction is increased.
It is characterized in that the opening end 16 is spread outward at its longitudinal end 14a and its vicinity to close the opening end 16 in a substantially flush plane.

(Operation and Effect of the Invention) According to the present invention, the inclined webs 13 and 13 are attached to the inclined constraining surfaces 23a and 2a.
Since the end portion 11a of the ridge strip 11 and the vicinity thereof are inclined and pressed while being restrained by the 3a, an inclined surface 17 inclined downward from the ridge strip 11 is formed. Since the inner end side is inclined downward while being folded inward and folded in two, the inboard folding portion 18 absorbs the plate excess generated when the ridge strip 11 is crushed. Moreover, since the rising reinforcing portion 14 at the end in the width direction is expanded outward, it is possible to form a flat surface as a whole, the opening end 16 can be closed cleanly without difficulty, and concrete leakage can be reliably prevented. it can.

Further, the outer sides of the inclined webs 13 and 13 may be restrained by the inclined restraining surfaces 23a and 23a, and the end opening can be closed by the press molding method, which is also excellent in productivity.

By the way, Japanese Utility Model Laid-Open No. 47-22708 and Japanese Unexamined Patent Publication No. 62-248517.
As shown in the publication, the inclined web is bent inward,
A method of absorbing the plate surplus is proposed. However, in such a folding method, the cross-sectional area of the end portion of the deck plate, which is placed on the steel beam, becomes small, which may cause structural weakness against a load from above. On the other hand, in the present invention, since the folded portions 18 of the inclined webs 13 and 13 have a shape that is inclined inward and downward, this functions as a reinforcing rib, and the strength of the end portion of the deck plate can be guaranteed.

(Examples) Hereinafter, the present invention will be described in detail based on specific examples shown in the accompanying drawings. FIG. 1 is a schematic end view showing an opening end-end closing process of a deck plate according to the present invention, and FIG. 2 is a side view thereof.

1 (a) and 2 (a) show a state before processing in which the upper mold 2 and the deck plate 1 are opposed to each other, and the upper mold 2 has a base 20 with a predetermined number of ridge strips. The first punch 21 and the second punches 22 at both ends are provided in a protruding manner, and a pad member 23 is provided, and can be moved up and down by a hydraulic cylinder (not shown).

The first punch 21 is a downward pressing punch having an abutting surface 21a. The abutting surface 21a is inclined upward in the longitudinal direction from the longitudinal end 11a of the ridge strip 11 and its vicinity, and the product inclined surface 17 is formed. Press molding. The second punch 22 contacts the longitudinal end 14a of the widthwise end rising reinforcement 14 and its vicinity, and pushes it outward. The pad members 23, 23 project from the first and second punches 21, 22 and between the first punches 21, 21 by being supported by the base 20 via the biasing means 24, and the outer surface and the surface of the inclined web 13. It has slanted restraining surfaces 23a, 23a that come into contact with each other, and is installed along a pair of facing slanted webs 13, 13 with its tip abutting the valley strip 12 and the valley strip 12 and the slanted web 13, The slanted webs 13 and 13 are restrained and the bending direction of the slanted webs 13 and 13 is regulated (see FIG. 1 (b)).

From such a state, as shown in FIG.
When the punch 21 starts pushing the end portion 11a of the ridge portion strip 11 of the deck plate 1, the inclined contact surface 21a causes the inclined surface 17 which is inclined upward in the longitudinal direction of the deck plate 1 to the end of the ridge portion strip 11. The molding starts gradually from the part 11a.

At this time, the inclined webs 13 and 13 are relatively retracted by the downward pressing of the first punch 21 and the second punch 22.
Being restrained by the inclined restraining surfaces 23a, 23a of 3, 23, the ends of the inclined webs 13, 13 on the side of the end 11a of the ridge strip 11 begin to bend inward so as to be folded in two. .

Further, when the first punch 21 and the second punch 22 descend, as shown in FIG. 1 (d), the ridge strip 11 is gradually pushed by the contact surface 21a of the first punch 21 also inward in the longitudinal direction. The crushed and inclined upper surface 17 is gradually formed from the end 11a side of the ridge strip 11 toward the inner side in the longitudinal direction.
When the second punch 22 and the second punch 22 are lowered by the full stroke, the inclined surface 17 inclined upward is formed and the end portion of the inclined surface 17 is formed.
17a is flattened as shown in FIG. 1 (e).

At this time, the inclined webs 13, 13 are inclined upward inward in the width direction, and the inclined restraining surfaces 23 of the pad members 23, 23 are inclined.
Being restrained by a and 23a, the inclined webs 13 and 13
Is folded inward in a sure manner in two folds with a gradually decreasing fold amount, while leaving the original web portion gradually increasing inward in the longitudinal direction from the end side along the inclined surface 17.

On the other hand, the adjacent end rising reinforcement 14 is pushed outward by the second punch 22 together with its vicinity when the inclined surface 17 is almost formed.

As a result, as shown in FIG. 3, the longitudinal end portion of the deck plate 1 is composed of the inclined surface 17, the folding portion 18 and the outer opening portion 19, and the end opening 16 of the deck plate 1 is reasonably and neatly formed. To be blocked.

Specifically, as shown in FIGS. 4A, 4B, and 4C, which are cross-sectional end views of the line AA, the line BB, and the line CC of FIG. 3, the end of the ridge strip 11 is illustrated. The inclined surface 17 is formed so as to be inclined downward from the vicinity of the portion toward the end. That is, at the position of line A-A in FIG. 3, the ridge strip 11 is slightly crushed downward as shown in FIG. 4 (a), and the inclined webs 13 and 13 remain almost in the original web shape. The upper part is folded inward in two,
Further, the rising reinforcing portion 14 at the end portion in the width direction is in a state where it is not pressed and deformed.

However, at the position of line BB in FIG. 3, as shown in FIG. 4 (b), the ridge strip 11 is crushed further downward, and the original web shape of the inclined webs 13, 13 decreases, The amount of folding of the upper portion is large, and the rising reinforcing portion 14 at the end in the width direction is expanding slightly outward.

At the position of line C-C in FIG. 3, the inclined surface 17 forms a substantially flat flat surface 17a from the vicinity of the end to the end, and ends, and the original web shape of the inclined webs 13 and 13 is almost lost and folding is completed. The portion 18 is completely folded, and the rising reinforcing portion 14 at the end in the width direction is formed with an outer open portion 19 in a flat state.

As described above, since the inclined webs 13 and 13 are folded so as to incline inward and downward, the amount of folding gradually increases toward the end of the deck plate 1, and as a result, the ridge strip 11 is crushed. Since it is possible to absorb the surplus of the plate generated when doing, the deck plate end opening is reasonably closed from the ridge strip 11 by the inclined surface 17 that inclines downward, and the opening end can be closed in a substantially flush plane. It is possible to prevent concrete from leaking from the end of the deck plate.

[Brief description of drawings]

1 (a), (b), (c), (d), and (e) are end face schematic views showing the open-end end-closed machining process of the deck plate according to the present invention, and FIGS. 2 (a) and (b). (C)
(D) and (e) are schematic side views of the end portions of the deck plate in the end-closed working process, FIG. 3 is a perspective view showing the end shape of the deck plate after the working, and FIGS. 4 (a) and 4 (b). (C) is a sectional view taken along the line AA of FIG. 3, a sectional view taken along the line BB of FIG. 3 and a sectional view taken along the line CC of FIG. 3, and FIG. 5 is a perspective view showing a synthetic floorboard structure. FIG. 6 is a plan view showing a conventional deck plate engraving mode, and FIG. 7 is an end view thereof. 1 …… Deck plate 2 …… Mold 3 …… Steel beam 4 …… Concrete 11 …… Ridge strip, 12 …… Valley strip 13 …… Sloping web 14 …… Standing reinforcement 16 …… End opening, 17 …… Inclined surface 18 …… Folded portion, 19 …… Outward opening 23a …… Inclined restraining surface

Claims (1)

[Claims] 1. A deck plate 1 formed by connecting a ridge strip 11 and a valley strip 12 extending in the longitudinal direction at regular intervals in the width direction by an inclined web 13 and adjoining both ends in the width direction. In a deck plate having a reinforcing portion 14 that engages with the widthwise end portions of the pair of opposite slopes that support the ridge strip 11 when closing at least one of the opening ends 16 in the longitudinal direction of the deck plate. Web 1
While restraining 3, 13 by the inclined restraining surfaces 23a, 23a on the outside thereof, the longitudinal end 11a of the ridge strip 11 and the vicinity thereof are inclined and pressed downward, and the ridge strip 11 moves to the longitudinal end. A sloping surface 17 that gradually inclines downward is formed, and the sloping webs 13 and 13 are folded inward in the width direction and folded, and the folding amount is increased along the sloping surface 17 toward the end and the width of the folding portion is increased. The inner end side in the direction is inclined downward, while the rising reinforcing portion 14 in the width direction is expanded outward at the longitudinal end portion 14a and the vicinity thereof to close the opening end 16 in a substantially flush plane. A method for closing and opening the end of the deck plate.