JPH0921203A - Structure for concrete placed portion of deck plate floor slab - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow easy and efficient construction. SOLUTION: The concrete-made first partition material 4 is fitted into each recess 2 in a deck plate 1, almost in a sectionally corrugated shape, a lower stab bar 6 barred inside each recess 2 is supported via the first partition material 4 and the concrete-made second partition material 10 extended on the upper face of the deck plate 1 in the cross direction is laid and arranged on the first partition material 4. Plural upper slab bars 18 barred on the upper face of the deck plate 1 is supported via the second partition material 10 and the upper part of the deck plate 1 is partitioned into plural concrete placed sections with the first and second partition materials 4, 10 to form a concrete placed part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a concrete vertical joint of a slab for partitioning the deck plate into a plurality of concrete placing sections in constructing a deck plate floor slab.

[0002]

2. Description of the Related Art As floor slabs for various structures, deck plates having a corrugated cross section are laid on a steel beam, for example.
A deck plate floor slab method of constructing by placing concrete on the deck plate is generally known.

In the case of this construction method, concrete driving sections are set on the deck plate in accordance with the restrictions on the amount of concrete to be poured per day and various construction conditions, and each section is driven for several days. I try to put concrete on both sides of the day.

That is, deck plates are laid on steel beams and the like, and then, in the vicinity of a small stress of 1/3 to 1/4 of the span of the floor slab, a splice is performed as a vertical seam of the concrete driving section of the slab. Set up a section. Conventionally,
In forming the spliced portion, it was a general construction method to use a wire net as a concrete outflow preventing member. A procedure for forming a vertical slab joint (hereinafter, simply referred to as joint) using a wire mesh will be described with reference to FIGS. 17 and 18.

First, as shown in FIGS. 17 and 18,
A plurality of spacers 32 are arranged at predetermined intervals in a groove-shaped recess 31 formed in the deck plate 30, and the lower slab muscle 33 is supported inside the recess 31 of the deck plate 30 via these spacers 32. .

Next, the strip-shaped wire net 38 to which the spacer 37 is attached in advance is continuously arranged along the width direction on the upper surface 30a of the deck plate 30 in the portion to be the splicing portion. Then, an inverted trapezoidal wire mesh 35 corresponding to the cross-sectional shape of the recess 31 is inserted into each recess 31 in the portion to be a splice portion, and the wire mesh 35 is connected to the wire mesh 38 by using a binding wire (not shown). Fixed to.

Next, a plurality of upper slab reinforcements 39 are arranged in parallel on the upper surface 30a of the deck plate 30 along the longitudinal direction thereof, and these upper slab reinforcements 39 are connected to the wire mesh 38.
Is supported via a spacer 37 attached to the upper end of the wire, and a reinforcing bar or mesh reinforcing bar 40 is attached in a direction perpendicular to the upper slab reinforcing bar 39. A material 41 is arranged, and this top end joint material 41 is fixed to the upper slab muscle 39 by using a numbered wire (not shown).

In this way, the splicing section is constructed, and the section of the upper surface 30a of the deck plate 30 is divided into a precast section A and a postcast section B of concrete by this spit section. Then, after this, concrete is first placed in the precast section A, and the upper surface of this concrete is finished using a wooden iron or the like.

After curing the concrete in the precast section A, the top end joint material 41 is removed, the concrete is placed in the postcast section B, and the upper surface of the concrete is finished by using a wooden iron or the like. , To cure. This completes the deck plate floor slab.

[0010]

However, the wire net 35 forming the splicing part is processed each time so as to be aligned with the recess 31 of the deck plate 30, and the wire net 38 on the upper part thereof is processed.
Since it is fixed to, it takes time and labor to work,
In particular, the work of inserting the wire netting 35 into the narrow space inside the recess 31 of the deck plate 30 and fixing it with the binding wire is troublesome, and the construction efficiency is reduced.

Further, since the wire net 35 is only fixed by the binding wire, the stability of the wire net 35 is poor, and the pre-strike section A is used.
When placing concrete inside, the pressure causes wire mesh 35
As a result, a part of the concrete projects to the side of the post-casting section B, and the removal work takes time and time.

Further, since the top end joint material 41 provided on the upper part of the splicing part is fixed by using the number line, the number line must be cut off when the top end joint material 41 is removed. The work efficiency is further reduced.

The present invention has been made by paying attention to such a point, and an object thereof is to provide a concrete joint structure of a deck plate floor slab that can be easily and efficiently constructed. is there.

[0014]

In order to achieve such an object, the present invention provides, as an invention according to claim 1, a first concrete-made member in each recess of a deck plate having a substantially corrugated cross section. A partitioning material is fitted and a second concrete partitioning material that is long along the width direction is placed on the upper surface of the deck plate so as to overlap the first partitioning material. The concrete placing joint of the deck plate floor slab is configured by partitioning the deck plate into a plurality of concrete placing sections by the partitioning material of 2.
As an invention according to claim 1, a first partition member fitted into each recess of the deck plate and a second partition member long along the width direction of the deck plate, on a deck plate having a substantially corrugated cross section. And a partition member made of concrete that integrally has a partition plate, and the partition member partitions the deck plate into a plurality of concrete casting sections to form a concrete jointing portion of the deck plate floor slab. As a result, a first partition member made of concrete is fitted into each recess of the deck plate having a substantially corrugated cross section, and the lower slab reinforcement arranged inside each recess is inserted through the first partition member. A second concrete partition member that supports and is long along the width direction is provided on the upper surface of the deck plate.
The plurality of upper slab stirrups arranged on the upper surface of the deck plate are superposed on each other and supported by the second partitioning member, and by the first and second partitioning members. The concrete placing joint is constructed by partitioning the deck plate into a plurality of concrete placing sections, and as the invention according to claim 4, the first concrete-made concrete is formed in each recess of the deck plate having a substantially corrugated cross section. A second slab made of concrete, which is fitted with a partitioning material, supports the lower slab reinforcement arranged inside each recess through the first partitioning material, and is long on the upper surface of the deck plate along the width direction thereof. Partitioning material is placed on the first partitioning material, and a plurality of upper slab reinforcements arranged on the upper surface of the deck plate are supported through the second partitioning material. Along the top edge of the second partition The timber is arranged, the Symbol first partition member,
It is characterized in that the second partition material and the top joint material are used to partition the upper part of the deck plate into a plurality of concrete placing sections to construct concrete joints.

As the invention according to claim 5, the first partition member and the second partition member in the invention according to claim 1, 3 or 4 are coupled to each other by a coupling tool, and the invention according to claim 6 As the first aspect of the invention according to claim 4
The partitioning material and the second partitioning material, and the second partitioning material and the top end joint material are respectively coupled with a coupling tool, and the invention according to claim 7 is the invention according to claim 1, 2, 3 or In the invention according to claim 4, a cotter for improving adhesion of concrete is formed on the first partition material and the second partition material in the invention according to claim 4, the invention according to claim 3 or 4 as the invention according to claim 8. First in the lower slab and upper slab
It is characterized in that a stopper for preventing the sliding movement of the partition material and the second partition material is mounted.

Further, as a ninth aspect of the invention, a lower slab in which a first partition member made of concrete is fitted in each recess of a deck plate having a substantially corrugated cross section, and reinforcing bars are arranged inside each recess. The streak is supported via the first partition member, and the second partition member made of wire mesh, which is long along the width direction, is arranged on the upper surface of the deck plate so as to be superposed on the first partition member. The first and second partition members partition the upper portion of the deck plate into a plurality of concrete placing sections to form a concrete jointing portion.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIGS. 1 to 11 show a first embodiment, in which reference numeral 1 is a deck plate having a substantially corrugated cross section, and 2 is a groove shape formed in the deck plate 1 in parallel at a constant interval. It is a concave part. Then, a splicing section 3 that serves as a joint of the concrete driving section is provided on the deck plate 1, and the area above the deck plate 1 from the splicing section 3 is a concrete precast section A as shown in FIG. And a trailing section B.

Explaining the structure of the splicing section 3, the first partition member 4 is provided in each recess 2 of the deck plate 1.
Is provided. The first partition member 4 is a molded product made of concrete, has a strength of 210 kg / cm ² or more, and has a reverse trapezoidal shape in which the shape viewed from the front corresponds to the cross-sectional shape of the recess 2.

These partition members 4 are closely fitted in the recesses 2 and are provided so that their upper end surfaces are flush with the upper surface 1a of the deck plate 1. The cross-sectional shape of the side surface of the partition member 4 is formed in a trapezoidal shape so that the partition member 4 can be stably arranged in the recess 2. Of course, partition material 4
The side surface may have a flat cross-sectional shape.

As shown in FIGS. 3 and 4, a substantially semicircular supporting groove 5 is formed on the upper surface of the partition member 4 as a reinforcing bar supporting portion. The middle of the lower slab muscle 6 arranged inside the recess 2 of the deck plate 1 is fitted in the support groove 5 and horizontally supported.

A second partition member 10 is provided on the upper surface 1a of the deck plate 1 along the width direction thereof, that is, the direction perpendicular to the longitudinal direction of the recess 2. This second partitioning member 10 is a molded product made of concrete, and its strength is
At 210 kg / cm ² or more, the shape seen from the front is a horizontally long strip that is continuous to the left and right. Then, inside the second partitioning member 10, as shown in FIG. 5, a reinforcing steel wire 11 is arranged along the longitudinal direction thereof.

The second partition member 10 is arranged so as to overlap the first partition member 4, and the first partition member 4 and the second partition member 10 are arranged together.
As shown in FIG. 3, a plurality of connecting pins 12 are provided between the partitioning member 10 and the partitioning member 10.

The connecting pin 12 is, as shown in FIG.
It has a pin shape having a disk-shaped collar 13 in the middle portion.
Then, as shown in FIG. 3, a pin hole 14 into which the connecting pin 12 can be inserted is formed on the upper surface of the first partition member 4 and the lower surface of the second partition member 10, and the lower half portion of the connecting pin 12 is formed. First
In the pin hole 14 of the partition member 4 of FIG.
The first partition member 4 and the second partition member 10 are connected to each other by the respective pin holes 14 of the above, and the shift movement thereof is prevented.

The cross-sectional shape of the side surface of the second partition member 10 is formed in a trapezoidal shape so that the second partition member 10 can be stably placed on the first partition member 4. Of course, the cross-sectional shape of the side surface of the second partition member 10 may be flat.

On the lower surface of the second partition member 10, a plurality of substantially semicircular recessed grooves 15 corresponding to the lower slab muscles 6 supported via the first partition member 4 are formed. The lower slab streak 6 exposed on the upper surface of the partition member 4 is fitted in these concave grooves 15.

On the upper surface 1a of the deck plate 1, a plurality of upper slab muscles 18 are provided in parallel along the longitudinal direction at regular intervals, and the upper surface of the second partitioning member 10 is formed. As shown in FIGS. 3 and 6, a plurality of substantially semicircular support grooves 19 corresponding to the upper slab reinforcement 18 are formed as reinforcement support portions. The middle of the upper slab muscle 18 is fitted in the support groove 19 and supported horizontally.

On the upper surface 1a of the second partition member 10, a top end joint material 20 formed of an elastic member such as rubber or plastic or wood or the like is provided by being polymerized, and this top end joint material 20 is provided. A plurality of substantially semicircular concave grooves 22 corresponding to the upper slab streak 18 are formed on the lower surface of the second slab, and secondly, the lower slab streak 18 exposed on the upper surface of the partition member 10 is formed by these concave grooves 2.
It fits inside 2.

The top joint material 20 is to be removed after the concrete has been poured into the pre-casting section A. To facilitate the removal, the cross-sectional shape of the side surface of the top joint material 20 is shown in FIG. And, as shown in FIG. 6, it has an inverted trapezoidal shape.

Further, the second partition material 10 and the top end joint material 20
3, a plurality of coupling pins 12 similar to the coupling pins 12 provided between the first partition member 4 and the second partition member 10 are provided as a coupling tool, as shown in FIG. The top end joint material 20 is detachably connected to the second partitioning member 10 via these connecting pins 12. That is, the pin holes 21 into which the connecting pins 12 can be inserted are formed on the upper surface of the second partition member 10 and the lower surface of the top end joint member 20, respectively, and the lower half of the connecting pin 12 is the second partition member 10. The upper half part is inserted into the pin hole 21 of the top end joint material 20 so as to be detachable, whereby the second partition member 10 and the second partition member 10 are inserted.
The partitioning member 20 and the partitioning member 20 are joined together to prevent the sliding movement.

As shown in FIG. 8, a screw 12a is formed on the outer peripheral surface of the connecting pin 12, and the connecting pin 12 has a collar 13a.
The second partition member 1 to be arranged on the first partition member 4 by screwing together and rotating the collar 13 up and down.
It is also possible to adjust the level of 0 or the top end joint material 20 arranged on the second partition member 10 so as to be able to be adjusted. Further, the connecting pin 12 may be a simple straight pin shape as shown in FIG.

As shown in FIG. 2, the lower slab muscle 6 and the upper slab muscle 18 are provided with stoppers 24 on the side of the rear striking section B, respectively. The stopper 24 is formed of an elastic material such as rubber or metal into a substantially C shape having a cutout portion 25 in an annular portion as shown in FIGS. 10 and 11, and the cutout portion 25 is elastically elastic. It is attached by interposing the lower slab muscle 6 or the upper slab muscle 18 in the circular portion 26 on the inner side of the annular shape while expanding and opening and crimping. The stopper 24 is provided on the side of the post-driving section B so as to come into contact with the first partition member 4 and the second partition member 10. In addition, 27 shown in FIG. 2 and FIG. 12 is a reinforcing bar arranged in a direction perpendicular to the upper slab reinforcing bar 18.

In such a state, first, concrete is poured into the pre-driving section A defined by the splicing section 3 on the deck plate 1 as shown in FIG. And finish with.

Next, for example, several days later, the top joint material 20 is removed, concrete is placed in the post-casting section B, and the upper surface of this concrete is finished by using a wooden iron or the like. Then, the concrete is cured. This completes the deck plate floor slab.

According to such an embodiment, the first partition member 4 is fitted in each recess 2 of the deck plate 1, and the second partition member 10 is arranged on the first partition member 4. However, the top joint material 20 can be arranged on the second partitioning member 10 to easily and efficiently form the striking joint 3.

The first partition member 4 can be used as a spacer for supporting the lower slab muscles 6, and the second partition member 10 can be used as a spacer for supporting the upper slab muscles 18, respectively. By omitting the spacer, the work can be simplified and the cost can be reduced.

When concrete is placed in the precast section A, pressure is applied to the partition members 4 and 10 of the joint section 3, but on the postcast section B side so as to contact the partition members 4 and 10. Stops 24 are attached to the slab muscles 6 and 18, and further, the first partition member 4 and the second partition member 10 are connected to each other via a connecting pin 12, so that in the pre-striking section A. The partition members 4 and 10 do not move due to the pressure caused by placing concrete on the partition members 4 and 10,
Can be kept in a stable state. Therefore, the concrete placed in the first-pushing section A rarely squeezes out to the second-placing section B side, and the troublesome removal work of the squeezed-out concrete is unnecessary, and efficient construction can be achieved. .

By the way, in order to improve adhesion of concrete to the first partition member 4 and the second partition member 10, as shown in FIG. 13, front and rear side surfaces of the partition members 4, 10 or either one of them. Recessed cotter 4 on the side
Alternatively, a and 10a may be formed. Further, the front and rear side surfaces of the partition members 4 and 10 may be roughened. FIG.
4 to 16 show a second embodiment of the present invention. In this second embodiment, the first partition member 4 is used.
The second partition member 10 is provided with support holes 5 and 19 penetrating therethrough in place of the support grooves 5 and 19 in the first embodiment, and the lower slab muscles 6 and 6 are formed in the support holes 5 and 19. It is designed to be supported through the upper slab muscle 18.

In the case of this construction, the workability of arranging the lower slab muscles 6 and the upper slab muscles 18 is slightly lowered, but the lower slab muscles 6 and the upper slab muscles 18 can be stably supported. Be advantageous.

FIG. 17 shows a third embodiment of the present invention. In this embodiment, a partition made of concrete in which the first partition member 4 and the second partition member 10 are integrally molded. The joint 30 is configured using the member 30. That is, a plurality of partition members 4 which can be fitted in the respective recesses 2 of the deck plate 1 are integrally projected on the lower surface of the horizontally long partition member 10 at regular intervals, and the horizontally long partition member 10 is formed. The partition members 4 are arranged on the upper surface of the plate 1 along the width direction thereof, and the partition members 4 are fitted into the respective recesses 2 of the deck plate, whereby the upper portion of the deck plate 1 becomes a pre-strike section and a post-strike section. It is partitioned.

Then, as shown in FIG. 17, the partition member 30
In addition to the case where the support holes 5 for supporting the lower slab muscles 18 are formed in the first partition member 4 and the support holes 19 for supporting the upper slab muscles 18 are formed in the second partition member 10, as shown in FIG. )
As shown in FIG. 3, a support hole 5 is formed in the first partition member 4 to support the lower slab streak 6, and a second semi-circular support groove 19 is formed in the upper surface of the second partition member 10. Upper slab muscle 1
8 or a supporting hole is not formed in the first partition member 4, that is, a lower slab is not used, and a supporting hole is provided only in the second partition member 10, as shown in FIG. 18 (B). 19
18C to support the upper slab muscle 18, further, as shown in FIG. 18C, the first partition member 4 is not provided with a support hole, that is, the lower slab muscle is not used, and It is also possible to form a substantially semicircular support groove 19 on the upper surface of the partition member 10 to support the upper slab muscle 18.

Also in the case of the third embodiment, in order to make the adhesion of concrete to the first partition member 4 and the second partition member 10 good, the partition members 4, 10 are also used.
A concave-shaped cotter may be formed on the front and rear side surfaces or on one of the side surfaces.

FIG. 19 shows a fourth embodiment of the present invention. In the fourth embodiment, as in the case of the first embodiment, the inside of the recess 2 of the deck plate 1 is made of concrete. The partition member 4 is fitted, and the wire mesh 38 with the conventional spacer 37 is arranged as the second partition member on the upper surface 1a of the deck plate 1, and the upper slab muscle 18 is supported by the spacer 37. Also these upper slab muscles 18
The top end joint material 20 is provided along the upper edge of the wire netting 38 via.

In this case, since a partition material, which is a concrete molded product, may be inserted and fitted into the recess 2 having a narrow space, it is possible to achieve efficient work without any trouble. it can.

[0044]

As described above, according to the present invention, when the concrete splicing portion is formed on the deck plate, the construction can be easily and efficiently performed.

[Brief description of drawings]

FIG. 1 is a front view of a concrete splicing section showing a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the splicing section.

FIG. 3 is an enlarged front view showing the striking section.

FIG. 4 is a perspective view of a first partition member used for the splicing section.

FIG. 5 is a perspective view of a second partition member used for the piecing joint.

FIG. 6 is a perspective view of a top end joint material used for the splicing portion.

FIG. 7 is a perspective view of a connecting pin used in the splicing section.

FIG. 8 is a perspective view of a structure in which a flange is movably screwed to the outer periphery of a coupling pin by screwing.

FIG. 9 is a perspective view of an example in which the connecting pin is a single pin.

FIG. 10 is a perspective view of a stopper used for the striking section.

FIG. 11 is a front view of the stopper.

FIG. 12 is a cross-sectional view showing a state in which concrete is placed in the tip end section on one side of the splicing section.

FIG. 13 is a perspective view showing a modified example of the first and second partition members.

FIG. 14 is a front view of a concrete splicing section showing a second embodiment of the present invention.

FIG. 15 is a perspective view of a first partition member used for the piecing joint.

FIG. 16 is a perspective view of a second partition member used for the piecing joint.

FIG. 17 is a front view of a concrete splicing section showing a third embodiment of the present invention.

FIG. 18 is a front view showing a modified example of the piecing joint.

FIG. 19 is a cross-sectional view of a concrete jointing portion showing a fourth embodiment of the present invention.

FIG. 20 is a cross-sectional view showing a conventional concrete jointing part.

FIG. 21 is a front view of the piecing joint.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Deck plate 2 ... Recessed part 3 ... Punching part 4 ... 1st partition material 6 ... Lower slab muscle 10 ... 2nd partition material 12 ... Joining pin 18 ... Upper slab muscle 20 ... Top joint material 24 ... Stopper 30 ... Partition member

Claims (9)

[Claims] 1. A first partition member made of concrete is fitted in each recess of a deck plate having a substantially corrugated cross section, and a first partition member made of concrete is long on the upper surface of the deck plate along its width direction. A deck characterized in that the second partition material is arranged on the first partition material in an overlapping manner, and the first and second partition materials partition the deck plate into a plurality of concrete placing sections. Concrete joint structure of plate floor slab. 2. A first partition member fitted into each recess of the deck plate on a deck plate having a substantially corrugated cross section, and a second partition member elongated along the width direction of the deck plate. A concrete jointing structure for a deck plate floor slab, characterized in that a concrete partitioning member that integrally includes and is provided, and the partitioning member partitions the deck plate into a plurality of concrete placing sections. 3. A first partition member made of concrete is fitted in each recess of a deck plate having a substantially corrugated cross section, and a lower slab reinforcement arranged inside each recess is used as the first partition member. The second partition member made of concrete, which is supported on the upper surface of the deck plate and is long along the width direction on the upper surface of the deck plate.
And a plurality of upper slab reinforcements arranged on the upper surface of the deck plate are supported via the second partition, and the first and the second partition are The concrete placing joint structure of the deck plate floor slab is characterized by partitioning the deck plate into a plurality of concrete placing sections. 4. A first partition member made of concrete is fitted in each recess of a deck plate having a substantially corrugated cross section, and a lower slab reinforcement arranged inside each recess is used as the first partition member. The second partition member made of concrete, which is supported on the upper surface of the deck plate and is long along the width direction on the upper surface of the deck plate.
The upper slab stirrup arranged on the upper part of the deck plate is superposed on the upper part of the deck plate. A deck is characterized in that a top joint material is arranged along the above, and the above-mentioned first partition material, second partition material and top joint material partition the deck plate into a plurality of concrete placing sections. Concrete joint structure of plate floor slab. 5. The first partition member and the second partition member are coupled to each other by a coupling tool.
Alternatively, the concrete joint construction of the deck plate floor slab described in 4 above. 6. A first partition member and a second partition member, and a second partition member.
5. The concrete splicing part structure for a deck plate floor slab according to claim 4, wherein the partition material and the top joint material are connected to each other by a connecting tool. 7. The first partition material and the second partition material are each provided with a cotter for improving the adhesion of concrete. Deck plate floor slab concrete splice structure. 8. The lower slab muscle and the upper slab muscle are provided with stoppers for preventing the first partition member and the second partition member from slipping and moving. Concrete splice structure of the deck plate floor slab described. 9. A first partition member made of concrete is fitted in each recess of a deck plate having a substantially corrugated cross section, and a lower slab reinforcement arranged inside each recess is provided with the first partition member. And a second partition member made of wire mesh, which is long along the width direction of the deck plate, is placed on the upper surface of the deck plate so as to be superposed on the first partition member. A concrete jointing structure for a deck plate floor slab, characterized in that the deck plate is divided into a plurality of concrete placing sections by the partitioning material.