JP4711295B2 - Deck plate - Google Patents

Description

  The present invention relates to a so-called intermediate end closed (hereinafter referred to as “enclosure”) type deck in which a beam placing portion for closing an end portion is formed at an intermediate height position between a mountain surface and a valley surface by crushing the end portion in the length direction of the deck plate. The present invention relates to a plate and a so-called reverse-enclosure type deck plate which is crushed from the lower side to form a beam mounting portion whose end is closed at the height position of the mountain surface.

As shown in FIG. 2, a deck plate 1 in which a horizontal crest surface 2 and a trough surface 3 continuously form a trapezoidal corrugated cross section with a slope 4 is widely used as a discarded formwork when a concrete floor is constructed. .
This type of deck plate 1 is used as it is as a mold without being subjected to end blockage processing (enclosure processing) (from the deck plate 1A in FIG. 12 (a)) and from the end opening (lower part of the mountain surface). Since the concrete flows out, the end opening is closed with a small cover plate, or an encro deck plate as shown in FIGS. 12 (B) to (D), that is, an end block deck plate 1B, 1C, 1D is used.

The deck plate 1B shown in FIG. 12 (b) forms a beam mounting portion 5B that closes the end portion by crushing the end portion in the length direction of the deck plate from above (so that the crest surface 2 comes to the trough surface 3 side). It is a normal Enclo deck plate.
In the deck plate 1C of FIG. 12 (c), the end portion of the beam mounting portion 5C is closed by crushing the end portion in the length direction from below (so that the valley surface 3 is on the mountain surface 2 side). Is a so-called reverse-enclosure type deck plate. This reverse-enclosure type deck plate 1C has the advantage that the height of the mountain surface 2 is lowered, the floor height of the constructed concrete floor can be lowered, and the floor height of the building can be saved. is there.
The deck plate 1D shown in FIG. 12 (d) is formed by crushing the end in the length direction to form a beam mounting portion 5D having an end blockage at an intermediate height position between the peak surface 2 and the valley surface 3. This is a so-called intermediate enclosure type deck plate. This intermediate enclosure type deck plate 1D can ensure the thickness of the concrete on the beam 10 while having the advantage of floor height saving.
Further, like the deck plate 1 ′ shown in FIG. 13, as the beam placing portion 5, the deck plate length direction of the upper flat region with respect to the length L ₁ of the lower flat plate plate length direction is used. intermediate ene black type deck plate shortened form L ₂ is also conceivable.

  In the case of the above-mentioned reverse enclo type 1C and intermediate enclo type 1 ', 1D deck plate, the valley surface 3 is lower than the upper surface of the beam 10 so that it looks like a ship bottom. Is accumulated on the bottom surface 3 of the ship bottom. There is also a problem that when the concrete is placed, water that has exuded from the concrete accumulates in the bottom surface 3 of the ship bottom.

FIG. 14 shows a flat deck plate 60 in which a plurality of reinforcing ribs 61 having a hollow lower portion and a closed upper portion are formed in the deck plate width direction and the upper surface is flattened. Since water easily collects in the reinforcing rib 61, a drain hole 61a is formed in the bottom surface of the reinforcing rib 61 (Patent Documents 1, 2, 3, and 4).
Patent Document 1 discloses that a drain hole on the bottom surface of a reinforcing rib is formed in a pre-notch process before deck plate molding. In addition, as an explanation of a conventional example in Patent Document 1, it is disclosed that when a flat deck plate is roll-formed, a water drain hole is formed by pressing at equal intervals with a rotary blade in a molding machine (paragraph number [0002]).
In Patent Document 2, the position of the drain hole is separated from the position of the inner end edge of the end closed portion by a certain distance L or more, so that a defect such as necking or the like is generated in the reinforcing rib at the start of the drain hole. It is about eliminating fear. Note that Patent Document 2 also presupposes that a water drain hole can be formed by a pre-notch process (see paragraphs [0004], lines 10 to 17).
In Patent Document 3, the drain hole is merely shown in the figure.
Each drain hole in the above flat deck plate is provided in an intermediate portion in the deck plate length direction.
Further, in the case of a deck plate that is a normal type that is not a flat deck plate and that is not closed at the end, a water drainage hole is described in FIG. It is provided in the middle of the deck plate length direction.
Fig. 4 of Japanese Patent No. 3007707 Figure 30 of Japanese Patent No. 3020876 Figure 2 of Shokai Akira 64-14815 FIG. 9 of JP-A-7-102673

If the water drain hole is processed simply after the deck plate is formed, it is very cumbersome, the workability is poor, and the drilling cost is high.
Moreover, if the water drainage hole is processed in the pre-notch process before roll forming as in Patent Document 1, it is certainly efficient, but since the hole forming equipment is installed in the roll forming equipment itself, the equipment for drilling is used. Expense increases. Further, the work of setting the drilling equipment in the roll forming equipment is complicated, and the adjustment of the drilling equipment is also complicated. Moreover, if it is a pre-notch process before roll shaping | molding, a punching hole will be punched, and in this case, a punching piece will turn into a metal scrap and the process will become complicated.
Further, the method of press-cut forming with the rotary blade in the roll forming machine is also efficient, but it is also installed in the roll forming machine, so that the equipment cost is high. Moreover, the operation | work which sets and adjusts a rotary blade to a roll forming machine is complicated. Also, it is not easy to change the drilling position as appropriate.

  The present invention has been made based on the above background, and provides a deck plate capable of efficiently performing drilling processing, reducing the cost of facilities for drilling, and effectively draining water. Objective.

In the invention of claim 1 for solving the above-mentioned problem, the horizontal peak surface and the valley surface continuously form a trapezoidal corrugated cross-sectional shape with a slope, and the central portion in the length direction is high and decreases toward both ends. An intermediate end that is a deck plate and has an end-closed beam mounting portion at an intermediate height position between the mountain surface and the valley surface, which is formed through an inclined portion by crushing the end portion in the longitudinal direction of the deck plate. In a closed type deck plate,
Two cuts parallel to each other along the length of the deck plate were made in the valley surface near the lower edge of the slope on the valley surface side, and a drain hole was formed by pushing down or pushing up the part between both cuts. It is characterized by.

The invention according to claim 2 is a deck plate with a horizontal peak surface and a valley surface that continuously form a trapezoidal corrugated cross-sectional shape on a slope and has a central portion in the length direction that is high and decreases toward both ends. In addition, in the deck plate of the reverse end closed type provided with a beam placing portion for closing the end portion formed through the inclined portion by crushing the end portion in the length direction of the deck plate from the valley side, at the height position of the mountain surface. ,
Two cuts parallel to each other along the length of the deck plate were made in the valley surface near the lower edge of the slope on the valley surface side, and a drain hole was formed by pushing down or pushing up the part between both cuts. It is characterized by.

The invention according to claim 3 is a deck plate with a horizontal peak surface and a valley surface continuously forming a trapezoidal corrugated cross-sectional shape on an inclined surface and having a central portion in the length direction that is higher and lower toward both ends. Also, an intermediate end closed type deck plate having a beam mounting portion for closing the end formed by crushing the end portion in the length direction of the deck plate at an intermediate height position between the mountain surface and the valley surface. In
With drilling drainage holes in vicinity of the lower edge of the inclined portion of the valley side, the water drain hole is in a manner having the uncut edge to the lower edge of the inclined portion, depress cuts of tongue shape on the inclined portion It is formed.
The invention according to claim 4 is a deck plate with a horizontal peak surface and a valley surface continuously forming a trapezoidal corrugated cross-sectional shape on an inclined surface and having a central portion in the length direction that is higher and lower toward both ends, In addition, in the deck plate of the reverse end closed type provided with a beam placing portion for closing the end portion formed through the inclined portion by crushing the end portion in the length direction of the deck plate from the valley side, at the height position of the mountain surface. ,
With drilling drainage holes in vicinity of the lower edge of the inclined portion of the valley side, the water drain hole is in a manner having the uncut side at a position closer to the slightly inclined portion above the lower edge of the inclined portion, the inclined portion It is characterized by being formed by inserting and pushing down or pushing up a tongue-like cut including the lower edge of the inclined portion.

In the deck plate of each of the inventions according to claims 1 to 4, the rain that has fallen after laying the deck plate is directed to the end in the length direction along the valley surface, and the slope on the valley surface side of the enchrome processing portion (end portion closing processing portion) It is discharged from the drain hole near the lower edge. The same applies to the water that has oozed out of the concrete at the time of placing the concrete, and is discharged from the drain hole toward the longitudinal end along the valley surface.

Since the position of the drain hole is in the vicinity of the lower edge of the inclined portion of the enchrome processing portion, the drilling can be performed simultaneously with the encro processing performed using a press die. Therefore, a separate drilling process is not required and the workability is extremely good.
In addition, the installation cost for drilling can be reduced because only a slight modification of the enchrome mold is required.
In addition, since it is possible to drill holes by setting and adjusting the engraving mold, it is extremely difficult to set and adjust the drilling equipment compared to the pre-notch process and the rotating blade in the roll forming machine. It will be easy.
Further, since the drain hole is made simultaneously with the enchrome processing, there is no problem that the drain hole made in the pre-notch process is cracked at the time of the encro process and causes defects such as necking.

Also, that there is Mukuri the de Kkipureto and weep holes acts and is effective that the length near both ends, alone only provide a drainage hole near both ends, drainage is effectively line Is called.

Further, since it is possible to form the drain holes by pushing down or pushing up narrowing off, does not occur punched piece as a metal scrap, there is no problem that the process becomes complicated.

  Hereinafter, embodiments of the deck plate of the present invention will be described with reference to FIGS.

The deck plate 1 of the embodiment described below has the cross-sectional shape shown in FIG. 2, and the horizontal crest surface 2 and the trough surface 3 continuously form a trapezoidal corrugated cross-sectional shape on the slope 4. In the center of each valley surface 3, there are grooves 2a or ridges 3a for increasing the rigidity of the mountain surface 2 or the valley surface 3, and adjacent deck plates 1 are engaged with each other on both side edges in the width direction. Engaging portions 6 and 7.
The deck plate 1 in the illustrated example is a deck plate for a composite floor slab that is integrated with concrete and bears a load, and has a step portion 4a on a slope 4, and this step portion 4a allows the The hardened concrete and the deck plate 1 are integrated.

This deck plate 1 is a so-called intermediate end closed (hereinafter referred to as “enclosure”) type deck plate, which is an end-closed beam mounting portion formed through an inclined portion by crushing the end portion in the length direction of the deck plate. 5 at the intermediate height position between the mountain surface 2 and the valley surface 3.
The intermediate ene black deck plate 1 of the illustrated example, as shown in FIG. 1 (b), relative to the deck plate longitudinal length L ₁ of the plateau of the lower surface of Harino part 5, a flat upper surface it is obtained by shortening form deck plate longitudinal length L ₂ of the band. In this structure, when the deck plate 1 is spanned between the beams, the section modulus of the offset portion that is detached from the beam of the beam placement portion becomes large, and the rigidity is improved. In this case, the crushing of the end of the deck plate is performed by moving the upper and lower molds together to crush them to the middle height position, or fixing one mold and moving the other mold and deck plate. Both of them can be crushed to an intermediate height position.

In the deck plate 1 of the present invention, the deck plate 1 has a peeling h that is high in the center in the length direction and lower toward both ends as shown in FIG. Thus, the drain hole 11 is made in the vicinity of the lower edge of the inclined portion 16 on the valley surface side. In this embodiment, as shown in FIG. 3, the water drainage holes 11 are arranged at two locations on both sides of the ridge 3 a at the center in the width direction, and one in the vicinity of the left and right engaging portions 6, 7. A total of four locations are formed.
As shown in detail in FIGS. 5 (a) and 5 (b), the drain hole 11 in the illustrated example is formed by leaving a part of the hole periphery as a side 11a and inserting and pressing down a tongue-like cut. More specifically, it is an embodiment in which the lower edge 16a of the inclined portion 16 has an uncut side 11a, and a tongue-like cut is inserted into the inclined portion 16 and pushed down. A tongue-like portion with a cut and pressed down is indicated by 11b.

In the above-described deck plate 1, if it rains after laying the deck plate 1, the rain goes along the valley surface 3 toward the end in the length direction, and falls on the lower edge 16 a of the inclined portion 16 on the valley surface side of the enchrome processing portion. It is discharged from the drainage hole 11 that has come.
In this embodiment, there is a hollow h that is high in the central portion in the length direction and lowers toward both ends, so that the presence of the peel h and the drain holes 11 are in the vicinity of both ends in the length direction (particularly the lower edge of the inclined portion 16). The water drainage is effectively performed only by providing the water drainage holes only in the vicinity of both ends. However, it is not excluded to provide a drain hole in the middle part of the deck plate in the length direction.
The same applies to the water that has oozed out of the concrete at the time of placing the concrete, and is discharged from the drain hole 11 toward the longitudinal end along the valley surface 3.

Moreover, since the position of the drain hole 11 is in the vicinity of the lower edge 16a of the inclined portion 16 of the enchrome processing portion, the drilling can be performed simultaneously with the encro processing performed using a press die. Therefore, a separate drilling process is not required and the workability is extremely good.
In addition, the installation cost for drilling can be reduced because only a slight modification of the enchrome mold is required.
In addition, since it is possible to drill holes by setting and adjusting the engraving mold, it is extremely difficult to set and adjust the drilling equipment compared to the pre-notch process and the rotating blade in the roll forming machine. It will be easy.
Further, since the drain hole is made simultaneously with the enchrome processing, there is no problem that the drain hole made in the pre-notch process is cracked at the time of the encro process and causes defects such as necking.
Moreover, since the drain hole 11 in the present invention is not a punch hole, a punched piece that becomes a metal scrap is not generated, and the problem of complicated processing does not occur.

FIG. 6 shows another embodiment of the drain hole. FIG. 2A is a plan view of a drain hole portion, and FIG. 2B is a cross-sectional view taken along line EE in FIG. In this embodiment, the drain hole 21 has an uncut side 21a at a position slightly above the lower edge 16a of the inclined portion 16, and has a tongue-like shape including the inclined portion lower edge 16a in the inclined portion 16. It is formed by cutting and pushing up. The tongue-like portion that has been cut and pushed up is indicated by 21b.
In contrast to this embodiment, a drain hole formed by pushing down the tongue-like portion 21b may be used.

  FIG. 7 shows still another embodiment of the drain hole. FIG. 4A is a plan view of a drain hole portion, and FIG. 4B is a sectional view taken along line FF in FIG. The drain hole 21 'in this embodiment is formed by folding back the tip of the tongue-like portion 21b of the drain hole 21 in FIG. The tongue-like portion is indicated by 21b ', and the folded portion at the tip is indicated by 21c'. Since the tip end portion 21c 'of the tongue-like portion 21b' is folded, the opening area of the drain hole 21 'is increased.

FIG. 8 shows another reference example of the drain hole. FIG. 2A is a plan view of a drain hole portion, and FIG. 2B is a sectional view taken along line GG in FIG. The drain hole 31 is formed by inserting a tongue-like cut into the valley surface portion 3 and pushing it up in a manner that the valley surface portion 3 in the vicinity of the lower edge 16a of the inclined portion 16 has an uncut side 31a in the deck plate length direction. It is a thing. A tongue-like portion that has been cut and pushed up is indicated by 31b.
In this reference example , since the drain hole 31 is in the trough (horizontal part) 3, it is easy to drill.
In contrast to this reference example , a drain hole formed by pushing down the tongue-like portion 31b may be used.

FIG. 9 shows another reference example of the drain hole. FIG. 2A is a plan view of a drain hole portion, and FIG. 2B is a cross-sectional view taken along the line H-H in FIG. Drain hole 41 of this is the embodiment having the uncut edges 41a to the lower edge 16a of the inclined portion 16, and is formed by pressing down cuts of tongue shape on the valley surface 3. A tongue-like portion that has been cut and depressed is indicated by 41b.
Also in this reference example , since the drain hole 41 is in the trough (horizontal part) 3, it is easy to drill.
In contrast to this reference example , a drain hole formed by pushing up the tongue-like portion 41b may be used.

FIG. 10 shows still another embodiment of the drain hole. FIG. 2A is a plan view of a drain hole portion, and FIG. 2B is a sectional view taken along the line II of FIG. In the drain hole 51 of this embodiment, two parallel cuts 51c forming the length direction of the deck plate are made in the valley surface part 3 in the vicinity of the lower edge of the inclined part 16, and the part between the two cuts 51c is pushed up. Formed. A portion pushed up between the two cuts 51c is indicated by 51d. In this case, horizontal openings, that is, drain holes 51 are formed on both sides of the pushed-up portion 51d.
Even in this embodiment, since the drain hole 51 is in the valley surface (horizontal portion) 3, it is easy to perform the drilling.
In contrast to this embodiment, it is also possible to push down the portion 51d between the two cuts 51c to form drain holes on both sides thereof.

Although the deck plate 1 of the above-described embodiments is an intermediate ene black deck plate where the length L ₂ of the plateau of the upper surface side shorter than the length L ₁ of the plateau of the lower surface side, the plateau of the upper and lower surfaces have the same length Of course, the present invention can also be applied to the general intermediate enclosure deck plate (the type of the deck plate 1D shown in FIG. 12D).

The present invention can also be applied to a so-called reverse-enclosure type deck plate. FIG. 11 shows a case where the present invention is applied to a reverse-enclosure type deck plate 1C (same as that shown in FIG. 12C). Although the valley surface 3 side is a reverse encro shape crushed to the height position of the mountain surface 2 and the inclined portion 66 has a slightly steep angle, the drainage hole 61 is formed as shown in FIGS. This is almost the same as the embodiment. In other words, the drain hole 61 of this embodiment is formed by inserting and pressing down a tongue-like cut in the inclined portion 66 in a form having an uncut side 61a at the lower edge 66a of the inclined portion 66.
The action of draining by the drain hole 61 is the same as in the case of the intermediate enclosure type.

The drain holes 11, 21, 2, 1 ′, 61 of the above-described embodiment are cut holes formed by pushing down or pushing up a tongue-like notch while leaving a part of the hole periphery as a left side. However, the shape of the hole is arbitrary and can be variously modified. For example, the outline into which the tongue is cut may be a curve such as a circle or an ellipse. In addition, the uncut side is usually a straight line, but if it is kept short, the uncut side can be a curved line.

(A) is a side view showing the deck plate according to an embodiment of the present invention in a state of being spanned between beams, (B) is an enlarged view of the main part of (A). It is AA sectional drawing (however, thickness is abbreviate | omitted) of FIG. It is the BB arrow directional view (however, a beam is not shown) of FIG. It is a perspective view of the deck plate edge part vicinity in FIG. It shows the drain hole in the deck plate, (a) is a plan view of the drain hole part, (b) is a cross-sectional view taken along DD of (a) (enlarged view of portion C in FIG. 1 (b)). is there. The other example of a drain hole is shown, (A) is a top view of the drain hole part, (B) is EE sectional drawing of (A). The other example of a drain hole is shown, (A) is a top view of a drain hole part, (B) is FF sectional drawing of (A). The reference example of a drain hole is shown, (A) is a top view of a drain hole part, (B) is GG sectional drawing of (A). The other reference example of a drain hole is shown, (A) is a top view of a drain hole part, (B) is HH sectional drawing of (A). The other example of a drain hole is shown, (A) is a top view of the drain hole part, (B) is II sectional drawing of (A). FIG. 2 is a cross-sectional view corresponding to FIG. 1B, showing an embodiment applied to a reverse encro-type deck plate. This is a general description of Enclo type deck plates. (A) is a deck plate that is not closed, (B) is a normal Encro type deck plate, (C) is a reverse Enclo type deck plate, (D) is an intermediate enclosure type deck plate. It is a figure which shows the other example of an intermediate | middle enclosure type deck plate. It is a figure explaining the drain hole in the case of the flat deck plate as a prior art example.

Explanation of symbols

1, 1C Deck plate 2 Mountain surface 3 Valley surface 4 Slope 5 Beam placing portion 6, 7 Engaging portion 10 Beams 11, 21, 21 ', 31, 41, 51, 61 Drain holes 11a, 21a, 21a', 31a, 41a, 61a Uncut side 11b, 21b, 21b ', 31b, 41b, 61b Tongue piece 51c Cut 51d Part 21c' between both cuts Folded part 16, 66 Tilted part 16a, 66a Tilted part Lower edge of h

Claims (4)

A horizontal peak surface and a valley surface are sloped continuously to form a trapezoidal corrugated cross-sectional shape , and the deck plate has a strip with a central portion in the length direction that is higher and lower toward both ends, and ends in the length direction of the deck plate. In the intermediate end closed type deck plate provided with the beam mounting part of the end blockage formed through the inclined part by crushing the part at the intermediate height position between the mountain surface and the valley surface,
Two cuts parallel to each other along the length of the deck plate were made in the valley surface near the lower edge of the slope on the valley surface side, and a drain hole was formed by pushing down or pushing up the part between both cuts. Deck plate characterized by A horizontal peak surface and a valley surface are sloped continuously to form a trapezoidal corrugated cross-sectional shape , and the deck plate has a strip with a central portion in the length direction that is higher and lower toward both ends, and ends in the length direction of the deck plate. In the reverse end closed type deck plate provided with the beam mounting part of the end blockage formed through the inclined part by crushing the part from the valley surface side, at the height position of the mountain surface,
Two cuts parallel to each other along the length of the deck plate were made in the valley surface near the lower edge of the slope on the valley surface side, and a drain hole was formed by pushing down or pushing up the part between both cuts. Deck plate characterized by A horizontal peak surface and a valley surface are sloped continuously to form a trapezoidal corrugated cross-sectional shape , and the deck plate has a strip with a central portion in the length direction that is higher and lower toward both ends, and ends in the length direction of the deck plate. In the intermediate end closed type deck plate provided with the beam mounting part of the end blockage formed through the inclined part by crushing the part at the intermediate height position between the mountain surface and the valley surface,
With drilling drainage holes in vicinity of the lower edge of the inclined portion of the valley side, the water drain hole is in a manner having the uncut edge to the lower edge of the inclined portion, depress cuts of tongue shape on the inclined portion A deck plate characterized by being formed. A horizontal peak surface and a valley surface are sloped continuously to form a trapezoidal corrugated cross-sectional shape , and the deck plate has a strip with a central portion in the length direction that is higher and lower toward both ends, and ends in the length direction of the deck plate. In the reverse end closed type deck plate provided with the beam mounting part of the end blockage formed through the inclined part by crushing the part from the valley surface side, at the height position of the mountain surface,
With drilling drainage holes in vicinity of the lower edge of the inclined portion of the valley side, the water drain hole is in a manner having the uncut side at a position closer to the slightly inclined portion above the lower edge of the inclined portion, the inclined portion A deck plate characterized by being formed by inserting and pushing down or pushing up a tongue-like cut including the lower edge of the inclined portion.

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