KR20070024340A - Flat plate structure - Google Patents

Abstract

A floor plate structure is provided to freely flow the concrete poured at both areas of the connecting metal device and increase the mixing efficiency of the concrete by forming the concrete flow holes at the connecting metal device. A floor plate structure(30) comprises first and second reinforcing bars(31,32) extended in parallel; a connecting metal device(41) connecting the first and second reinforcing bars; and a frame(33) fixed by placing a supporting metal device for the connecting metal device. The connecting metal device is made of steel sheets, formed with fixing parts caulking-fixed for the first and second reinforcing bars, and installed with concrete flow holes penetrated toward the thickness of the steel sheets. The fixing parts are fixed by covering the ends of the steel sheets for the first and second reinforcing bars.

Description

Floor plate structure {FLAT PLATE STRUCTURE}

BRIEF DESCRIPTION OF THE DRAWINGS The schematic perspective view which shows the whole structure of the baseplate structure which concerns on the Example of this invention.

2 is an explanatory diagram showing a construction state using the bottom plate structure of FIG.

3 is a schematic plan view of the bottom plate structure of FIG.

4 is a schematic side view of the bottom plate structure of FIG.

5 is a schematic front view of the connecting metal mechanism of the bottom plate structure of FIG.

6 is a cross-sectional view taken along the line A-A of FIG.

7 is a cross-sectional view taken along the line B-B in FIG.

FIG. 8 is an explanatory diagram showing an example of caulking of the connecting metal mechanism of FIG. 5; FIG.

9 is a cross-sectional view taken along the line B-B in FIG. 5.

10 is a diagram showing a modification of the connecting metal mechanism.

11 is a diagram showing a modification of the connecting metal mechanism.

12 is a cross-sectional view taken along the line E-E in FIG.

Fig. 13 is a schematic front view of a state in which the steel is caulked with the connecting metal mechanism of Fig. 5 and the mold is fixed with the supporting metal mechanism;

14 is a cross-sectional view taken along the line F-F in FIG. 13;

Fig. 15 shows the main parts of the supporting metal mechanism.

16 is a view for explaining the function of the supporting metal mechanism.

FIG. 17 is a view showing a state of caulking the rebar with the connecting metal mechanism of FIG. 5, fixing the mold with the supporting metal mechanism, and further adjusting the level with the level adjusting jig.

18 is a partial schematic side view of the leveling jig of FIG. 17;

19 is a schematic plan view of a leveling jig part.

20 is a schematic front view of a leveling jig part.

FIG. 21 is a view showing a state before mounting the push bolt of the leveling jig of FIG. 17; FIG.

FIG. 22 is a partial schematic side view of the leveling jig of FIG. 21;

FIG. 23 is a schematic process diagram illustrating an example of a method of manufacturing the bottom plate structure of FIG. 1. FIG.

24 is a structural diagram showing an example of a conventional bottom plate structure.

♣ Explanation of symbols for main part of drawing ♣

11: Template 12: Pier

30: bottom plate structure 31: the first reinforcing bar

32: second rebar 33: mold

34: power muscle 41: connection metal mechanism

42, 43: Government Government 44, 45: Reinforcement Department

46: concrete flow hole 51: support metal mechanism

53, 54: support shaft 61: leveling jig

62: level control jig part 64: nut member

67: push bolt

The present invention improves the bottom plate structure using rebars used in bridge construction such as roads, and the level of the reinforcing bars for metal fittings, molds and the like of reinforcing bars used in the bottom plate structures. A component for level management jig for adjustment management.

Conventionally, the construction using the floor plate used in the above-described bridge construction, for example, in the construction site, using a temporary material to assemble the mold for placing concrete, reinforcing the reinforcing bar within the mold, and then cast concrete, It is done by removing.

For this reason, skilled workers such as molders and reinforcing workers are in charge of each construction and require relatively long days of construction, resulting in a rise in labor costs due to the use of many skilled workers and an increase in the cost of prolonged construction days. do.

Therefore, there is also a technique in which part or all of the body including the reinforcing rod, the mold, and the concrete is made in advance in the factory or at least near the construction site, and then transported to the site after completion.

In this case, the construction time is shortened at least at the construction site, so the burden is reduced. However, when the concrete is placed in the factory and transported to the site, it is necessary to carry a very heavy bottom plate body. Too large a burden arises in transportation.

Therefore, there is also known a technique of forming a bottom plate structure in which rebar and a mold are combined, transporting the bottom plate structure to a construction site, placing it on a mold or the like, and placing concrete (see Patent Document 1).

24 is an enlarged view of a part of such a bottom plate structure.

In the figure, the bottom plate structure 1 connects the upper reinforcing bar 2 and the lower reinforcing bar 3 with an X-type steel metal mechanism 4, and suspending the X-type steel metal mechanism 4 with a suspension. One end of the metal mechanism 6 is fixed, and the mold 5 is fixed to the other end of the suspension tab 6.

In such a structure, in the construction site, this bottom plate structure 1 is carried in and arrange | positioned sequentially on the mold etc. which are not shown in figure. Then, between the bottom plate structures (1) arranged adjacently, through the lifting bars (7, 8), the intersection of these and the upper reinforcing bar (2) and the lower reinforcing bar (3) is fastened, and the mold (5) It is supposed to flow concrete inside.

Therefore, since the bottom plate structure 1 to be transported to the site without the need to assemble the reinforcing bar and the mold at the construction site is a structure before placing concrete, there is an advantage that it is not necessary to carry extreme weights.

[Patent Document 1] Patent No. 3579333

By the way, in the bottom plate structure 1 of FIG. 24, when attaching the X type forced metal mechanism 4 to the upper reinforcement 2 and the lower reinforcement 3, ring-shaped fastening metal mechanisms 9 and 9 , 9, 9 are caulked to each reinforcing bar, and then each end of the X-type steel metal device 4 is welded to the corresponding fastening metal device 9, 9, 9, 9 by welding. It is fixed.

For this reason, in the process of assembling and fixing the upper reinforcing bar 2 and the lower reinforcing bar 3 using the X-type steel metal mechanism 4, first, ring-shaped fastening is performed to the upper reinforcing bar 2 and the lower reinforcing bar 3. A step of caulking and fixing the metal mechanisms 9, 9, 9, and 9 is required, and for the fastening metal mechanisms 9, 9, 9, and 9 that are caulked and fixed to the reinforcing bars, an X-type forced metal mechanism ( 4) is fixed by welding, so the process is quite troublesome.

In addition, since the tip portions of the X-type steel metal mechanism 4 are fixed by welding to the corresponding fastening metal mechanisms 9, 9, 9, 9, in the assembly process of the bottom plate structure 1, The X-type steel metal mechanism 4 of the sign 4 undergoes an undesired heat treatment process, which may cause problems in strength.

That is, the X-type steel metal mechanism 4 connecting the upper reinforcing bar 2 and the lower reinforcing bar 3 tries to improve the strength by combining the truss structure by making the shape of the X-shape, but the fastening metal described above. There exists a problem that strength may fall rather by the heat processing history at the time of fixing to the mechanism 9, 9, 9, 9 by welding.

The present invention is easy to transport and construct, has a low construction cost, does not require an undesirable heat treatment process, and has a certain strength, the bottom plate structure, the connection metal mechanism used for this, and level management An object of the present invention is to provide a construction method using a jig part for a floor and a bottom plate structure.

In the invention of claim 1, the object is that the first and second rebars arranged in parallel, the connecting metal mechanism for connecting the first and second rebars, and the supporting metal mechanism for the connecting metal mechanism. A bottom plate structure having a mold fixed through a metal plate, wherein the connecting metal mechanism is formed of a steel plate, and has a fixing portion for caulking each of the reinforcing bars of the first and second reinforcing bars. At the same time, it is achieved by the bottom plate structure to have a concrete flow hole penetrated in the thickness direction of the steel sheet.

According to the structure of 1st invention, since the said connection metal mechanism has a structure which is strong and strong, and it is a structure which is cocked and fixed without being welded with respect to each steel rebar of the said 1st steel reinforcement and a 2nd steel reinforcement, It is fixed without passing through the process, and the robust structure is not damaged. In addition, since the concrete flow hole is formed in the connection metal mechanism, the concrete placed in both regions while the connection metal mechanism is interposed therein can freely flow and be uniformly mixed.

Therefore, according to the present invention, it is possible to provide a bottom plate structure which is easy to carry and construct, low in construction cost, does not require an undesirable heat treatment step, and has a certain strength.

According to a second aspect of the invention, in the configuration of the first aspect of the invention, the fixing portion of the connecting metal mechanism is a structure in which the steel sheet end portion is wound and fixed to the first and second rebars. .

According to the configuration of the second aspect of the invention, since the fixing portion of the connecting metal mechanism is configured to wind and fix the ends of the steel sheet to the first and second rebars, unlike the structure of only pressing in one direction. Reliable connection and fixing can be realized.

According to a third aspect of the invention, in the configuration of the first or second invention, the steel sheet constituting the connecting metal mechanism has a rib-shaped or furrow-shaped reinforcement portion.

According to the structure of 3rd invention, even if the plate | board thickness of the steel plate which comprises the said connection metal mechanism is made thin, sufficient intensity | strength can be obtained.

According to a fourth aspect of the present invention, the reinforcing portion is formed in the fixing portion of the steel sheet constituting the connecting metal mechanism.

According to the fourth aspect of the invention, even if the sheet thickness of the steel sheet constituting the connecting metal mechanism is reduced, sufficient strength can be obtained, and the reinforcing bars in the rib-shaped or furrow-shaped reinforcing portions can be used. It is possible to make the connection to the reinforcing bar more secure by improving the attachment to.

According to a fifth aspect of the invention, in any one of the first to fourth aspects of the invention, in the supporting metal mechanism, one end thereof is fixed near the center of the connecting metal mechanism, and the other end thereof is fixed to the mold. At least one or both of the one end fixing portion and the other end fixing portion of the supporting metal mechanism is rotatably fixed along the circumference of the support shaft.

According to the fifth aspect of the present invention, since either one of the one end fixing portion and the other end fixing portion of the supporting metal mechanism can rotate along the circumference of the support shaft, when the mold is assembled on the rebar side in a factory or the like, Adjustment is easy and assembly is easy. In addition, even in a construction site in which the bottom plate structure is mounted on a mold or the like, the construction can be carried out by moving the mold side and making fine adjustments without moving the position of the main reinforcing bar during construction.

According to a sixth aspect of the invention, in the configuration of the fifth aspect of the invention, the support shaft is formed by riveting the rotatable fixing portion.

According to the structure of 6th invention, when the said support shaft for fixing is a rivet, assembling in a factory etc. becomes easier and it is possible for a short time.

According to a seventh aspect of the invention, in the constitution of any one of the first to sixth inventions, the connecting metal mechanism includes a nut with a steel plate fixed to a steel plate, and a long screw shape that is rotatably mounted to the nut member. It is characterized in that the leveling jig having a pressing bolt of is fixed.

According to the structure of 7th invention, compared with the conventional operation | work which mounts a nut by welding with respect to the said connection metal mechanism, only the nut member with a steel plate is fixed to the said connection metal mechanism, and the level adjustment in a construction site is easy. It becomes possible.

In the eighth invention, the object is a connecting metal mechanism for connecting parallel rebars, which is formed of a substantially H-shaped steel plate, and extends in a band shape from both ends in the longitudinal direction of the main body part in parallel with each other. And a concrete flow hole penetrating in the thickness direction of the steel sheet between the fixing portion which can be wound around the reinforcing bars and caulked and the parallel strip-shaped portion constituting the fixing portion, and the fixing portion. It is achieved by the connection metal mechanism provided with the rib-shaped or furrow-shaped reinforcement part provided in each said strip | belt-shaped part.

According to the eighth aspect of the present invention, since the connecting metal mechanism is used, each of the rebars of the first and second rebars is fixed without being welded, and thus is fixed without undergoing a heat treatment step. The bottom plate structure can be realized that the strong structure is not damaged. In addition, since the concrete flow hole is formed in the connecting metal mechanism, the bottom plate structure capable of freely flowing concrete mixed in both regions while the connecting metal mechanism is sandwiched can be realized.

According to a ninth aspect of the invention, in the configuration of the eighth aspect, the main body portion is provided with at least one pair of riveting through-holes arranged at predetermined intervals along the longitudinal direction in the central portion thereof.

According to the ninth aspect of the invention, in the main body portion, when a connecting metal mechanism having at least one pair of riveting through holes arranged in the center portion at predetermined intervals along the longitudinal direction is used, the riveting portion in the through hole is used. Since the support metal mechanism can be swingably fixed, the base plate structure itself can be easily assembled in a factory, etc., and the construction work is very easy even at the construction site. I can do it.

Moreover, in the 10th invention, the said object is a level management jig component for attaching the level adjustment push bolt with respect to the connecting metal mechanism for connecting reinforcing bars, At least a steel plate body smaller than the said connecting metal mechanism, and the force It is achieved by a part for level management jig, which is fixed to an almost center portion of the plate and has a nut portion that can be screwed with the level adjusting push bolt, and a rivet or bolt through hole drilled in the steel plate.

According to the tenth aspect of the present invention, the leveling jig component of the present invention is a nut member with a steel plate, whereas the conventional work of mounting the nut by welding with respect to the connecting metal mechanism is very complicated. Since the rivet or the through-hole for bolts is provided, by using such a level control strip part, the level management means can be realized in the bottom plate structure only by simple riveting.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In addition, although the Example described below is a preferable specific example of this invention, technically preferable various limitations are attached, but the scope of the present invention does not mention the meaning of limiting this invention especially in the following description. It is not limited to these Examples.

1 is a schematic perspective view showing the entire structure of a bottom plate structure according to an embodiment of the present invention, Figure 2 is an explanatory view showing a bridge construction using the bottom plate structure, Figure 3 is a view from above Figure 1 4 is a side view of FIG. 3.

In FIG. 1 and FIG. 2, the code | symbol 11 is the mold which spread | hung on the bridge 12 and the bridge | cross 14 in bridge construction. On the mold 11, several unit shape bottom plate structure 30 is arrange | positioned continuously.

The bottom plate structure 30 shown in FIG. 1 represents one unit of the bottom plate structure in this embodiment, respectively, and the bottom plate structure 30 manufactured in such a unit unit is shown in FIG. As shown in FIG. 2, it picks up with the crane 13 etc., and is arrange | positioned on the mold 11 in succession along the arrow Y direction one by one.

The bottom plate structure 30 of FIG. 1 has the first reinforcing bar 31 and the second reinforcing bar 32 arranged parallel to the first reinforcing bar 31 at a predetermined distance apart from each other in the Z direction, and arranged in parallel therewith. Between the first reinforcing bar 31 and the second reinforcing bars 32 to be connected, a mold for fixing and supporting the connecting metal mechanism 41 for connecting these reinforcing bars through the supporting metal mechanism described later. (33) and, in principle, does not include concrete parts.

1 and 3, a plurality of first reinforcing bars 31 are arranged in parallel in the Y direction, and although not shown in FIG. 3, the second reinforcing bars located below the same number. Similarly, a plurality is arranged in parallel. The plurality of back muscles 34 are disposed along the X direction, and are orthogonal to the first reinforcing bars 31 and the second reinforcing bars.

Moreover, although each rebar is arrange | positioned in parallel in parallel, it is not limited to the number shown.

Referring to FIG. 4, a support metal mechanism 51 fixed to the connecting metal mechanism 51 of the bottom plate structure 30, the connecting metal mechanism 51, and supporting the mold 33, and a leveling finger. The relationship of the 61 and the like can be understood. These detailed structures will be described later.

5 to 8 show a preferred embodiment of the connecting metal mechanism, FIG. 5 is a schematic plan view, FIG. 6 is a cross-sectional view taken along line AA of FIG. 5, FIG. 7 is a cross-sectional view taken along line BB of FIG. 5, and FIG. 8. Is a schematic sectional drawing for demonstrating the caulking fall of the connection metal mechanism.

In these figures, the connecting metal mechanism 41 is formed of a steel plate, and is preferably formed of a high corrosion resistant plated steel sheet. In this embodiment, the plating layer provided on the surface of the connection metal mechanism 41 is formed by hot-dip plating in which aluminum and magnesium are contained in zinc, for example. In this case, for example, it is configured to contain about 6 percent aluminum and about 3 percent magnesium (all weight percent) relative to zinc. Thereby, it has 10 to 20 times corrosion resistance compared with the usual hot dip galvanized steel plate.

In addition, hot dip plating can achieve almost the same effect even when zinc contains a trace amount of silicon in about 11 percent of aluminum and about 3 percent of magnesium.

In addition, when such a plating layer is provided, when a relatively large material sheet is pressed and obtained to obtain a connecting metal mechanism in the shape of the present embodiment, even if the cut surface is exposed to rainwater or condensation, the rainwater and dew The steel sheet exposed surface is rusted, but at the same time, Zn, Al, and Mg are melted from the plating layer to coat the Mg-containing Zn-based protective film. Thereby, very excellent rust prevention effect can be expected also in a cut end surface.

In addition, as shown in FIG. 5, the connection metal mechanism 41 is formed in the above-mentioned steel plate of the substantially long H-shape, for example, in one direction, for example. The strip-shaped fixing portions 42, 42 and 43, 43 extend from each end in parallel to each other in the longitudinal direction in the longitudinal direction of the main body portion 49, which is a steel sheet.

The first reinforcing bar 31 corresponds to the rear position of the fixing parts 42 and 42 in FIG. 5, and the second reinforcing bar 32 corresponds to the rear position of the fixing parts 43 and 43 in FIG. 5. These fixing parts 42 and 42 and 43 and 43 are respectively wound around each of the corresponding reinforcing bars 31 and 32 and are caulked.

Here, in the connection metal mechanism 41, concrete flow holes 46 and 46 which penetrate in the thickness direction of the steel sheet by the slit phenomenon between the fixing portions 42 and 42 and between the fixing portions 43 and 43, respectively. ) Is formed. In the connecting metal mechanism 41, first reinforcing beads 44 and 44 having a rib shape or a furrow shape extending in the longitudinal direction are formed in the main body part 49. Preferably, in the band-shaped fixing portions 42, 42 and 43, 43, rib-shaped or furrow-shaped second reinforcing beads (reinforcement beads) 45, 45, so as to protrude from the surface thereof. 45, 45) are formed.

Moreover, since each fixing | fixed part 42, 42, 43, 43 is formed in the wide width | variety as shown in FIG. 5 compared with the center area | region, the area which is wound up and fixed with respect to reinforcement by that much increases. This also improves the fixed strength.

In addition, in the main body portion 49 of the connecting metal mechanism 41, the support metal mechanism is disposed so as to be disposed on both sides thereof with the first through hole 47 and the first through hole 47 interposed therebetween. Two through holes 48 and 48 were formed. The second through holes 48 and 48 for the supporting metal mechanism are formed on both sides with the first through hole 47 therebetween, so that either one of the left and right ends of the connecting metal mechanism 41 of FIG. Even if it is up, it can be used without any problem. The supporting metal mechanism will be described in detail later. In addition, the through hole 47 may be omitted.

The connection metal mechanism 41 of this embodiment is comprised as mentioned above, and by providing a pair of 1st reinforcement parts 44 and 44 in the main-body part 49, rigidity can be improved and strength can be increased. .

In addition, the second reinforcing portions 45, 45, 45, 45 are formed in the form extending in the longitudinal direction to the belt-shaped fixing portions 42, 42, 43, 43, and also protrudes the beads The side) is provided on the side to contact when each fixing part 42 and 42 and 43 and 43 are wound around the 1st and 2nd reinforcing bars 31 and 32. As shown in FIG.

Thereby, as shown in FIG. 8, the 1st and 2nd reinforcing bars 31 and 32 contact each fixed part 42 and 42 of the connection metal mechanism 41, and 43 and 43, respectively, and FIG. In the first step, each of the fixing parts 42, 42 is first vertically pressed, the second step is bent in the direction of the arrows C, C, and the arrows D, D direction. The press working of the 3rd step which bends in the process is performed. As a result, by performing a three-step press, each of the fixing parts 42, 42 and 43, 43 is wound around the first and second reinforcing bars 31 and 32, respectively, thereby coking. In this case, at the time of pressing, since the second reinforcing portions 45, 45, 45, 45 are attached to the reinforcing bars as the protruding portions, the fixing is more secured.

9 and 10 show a modification of the connecting metal mechanism.

Fig. 9A shows Modification Example 1 of the connection metal mechanism, and the connection metal mechanism 41-1 of the modification 1 has respective fixing portions 42-1, 42-1, 43-1, 43-1. ) Is narrower than the case of FIG. 5. In this way, the connecting metal mechanism may be compactly formed.

9B shows a modification 2 of the connecting metal mechanism.

Compared with the structure of FIG. 5, the connecting metal mechanism 41-2 of the modification 2 is provided with the 2nd reinforcement parts 45 and 45 in parallel in the width direction with respect to one fixed part, A plurality of reinforcing portions 44 are arranged in parallel so as to be different from each other in the width direction. This strengthens the adhesion at the time of fixing to the rebar.

Fig. 9C shows a modification 3 of the connecting metal mechanism.

In the connection metal mechanism 41-3 of the modification 3, the 1st reinforcement parts 44-1 and 44-1 are formed over the full length of the connection metal mechanism 41-3, and the fixing part 42 , 42, 43, 43 are arranged in parallel with the first reinforcing portions 45, 45, 45, 45. This strengthens the adhesion at the time of fixing to the rebar.

9 (d) shows a modification 4 of the connecting metal mechanism.

In the connection metal mechanism 41-4 of the modification 4, the 1st reinforcement part 44 is arrange | positioned in parallel so that it may mutually differ in the width direction.

Further, the first reinforcing portions 45-1 are provided with a plurality of projections extending in the direction perpendicular to the longitudinal direction of the connecting metal mechanism 41-4 in each of the fixing portions 42, 42, 43, 43. It is. This strengthens the adhesion at the time of fixing to the rebar. In particular, in each of the fixing portions 42, 42, 43, 43, the projections, which are the first reinforcing portions 45-1, extend in a direction orthogonal to the rotational slip direction with respect to the reinforcing bars, thereby strengthening the attachment to the reinforcing bars. .

10A shows a modification 5 of the connecting metal mechanism.

In the connection metal mechanism 41-5 of the modification 5, the 1st reinforcement part 45-2 is the length of the connection metal mechanism 41-5 in each fixed part 42, 42, 43, 43. It consists of a plurality of protrusions extending in a direction intersecting the direction obliquely. This strengthens the adhesion at the time of fixing to the rebar. That is, in each of the fixing portions 42, 42, 43, 43, the projections, which are the first reinforcing portions 45-2, extend in a direction intersecting obliquely with the rotational slip direction with respect to the reinforcing bars, thereby strengthening the attachment to the reinforcing bars. I'm making it.

10B shows a modification 6 of the connecting metal mechanism.

In the connection metal mechanism 41-6 of the modification 6, the 1st reinforcement part 45-3 is a processus | protrusion so that it may form a grid | lattice form in each fixing | fixed part 42, 42, 43, 43. As shown in FIG. This strengthens the adhesion at the time of fixing to the rebar. That is, in each of the fixing portions 42, 42, 43, 43, since the projections, which are the first reinforcing portions 45-3, intersect the rotation slip direction with respect to the rebar in an oblique cross direction, the attachment to the reinforcing bars Is strengthening.

10C shows a modification 7 of the connecting metal mechanism.

In the connection metal mechanism 41-7 of the modification 7, the 1st reinforcement part 45-4 does not have the bead-shaped protruding part in each fixing | fixed part 42, 42, 43, 43, It is made up of plural or plural small bosses. As a result, when fixing to reinforcing bars, adhesion is strengthened by reliably contacting at a plurality of locations.

FIG. 11 is a schematic front view showing a state in which the first reinforcing bar 31 and the second reinforcing bar 32 are connected by the connecting metal mechanism 41, and FIG. 12 is a cross-sectional view taken along the line E-E of FIG.

In the state of FIG. 11 and FIG. 12, the mold is not fixed, and as shown in FIGS. 13 and 14, the support metal mechanism 51 is used to fix the mold.

FIG. 13: is a schematic front view which shows the state which connected the 1st steel reinforcement 31 and the 2nd steel reinforcement 32 with the connection metal mechanism 41, and fixed the mold further, FIG. 14 is the FF line cutting of FIG. It is a cross section.

As shown in FIG. 13 and FIG. 14, as shown in FIG. 13, the supporting metal mechanism 51 connecting the connecting metal mechanism 41 and the mold is a concrete that is the distance from the second reinforcing bar 32 to the mold 33. Serves to maintain the cover.

In the present embodiment, the supporting metal mechanism 51 is an almost elongated paper-shaped metal plate body that is long in one direction, and one end, that is, the upper end thereof is supported by the second through hole 48 of the connecting metal mechanism 41. The lower end, which is the other end, is fixed to the mold 33 via the L-shaped metal mechanism 52.

In addition, the mold 33 is steel and it is preferable to use the same material as the connection metal mechanism 41 mentioned above as a material.

That is, the mold 33 is preferably formed of a high corrosion-resistant plated steel sheet, and the plating layer formed on the surface thereof is formed of hot dip plating containing aluminum and magnesium in zinc, for example. In this case, for example, it is configured to contain about 6 percent aluminum and 3 percent magnesium (all weight percent) relative to zinc. As a result, it has a corrosion resistance of 10 to 20 times as compared with a normal hot dip galvanized steel sheet.

In addition, hot dip plating can achieve almost the same effect even when a small amount of silicon is contained in, for example, about 11 percent of aluminum and about 3 percent of magnesium with respect to zinc.

Here, the upper support shaft 53 and / or the lower support shaft 54 of the support metal mechanism 51 fix the support metal mechanism 51 so as to be swingable about the axis with respect to the object, respectively. In this embodiment, the support metal mechanism 51 is rotatable or rotatable along each of the support shafts 53 and the periphery of the support shafts 54, respectively, and the rotation angle thereof is preferably shown in FIG. As is 180 degrees.

Such a configuration can be formed, for example, by striking the rivet against the standing portion of the connecting metal mechanism 41 or the L-shaped metal mechanism 52, and the shaft hole of each rivet counterpart member. If it is a smaller outer diameter, it can be comprised easily, and the fixing operation of the support metal mechanism 51 is also easy.

As a result, one of the one end fixed portion and the other end fixed portion of the support metal mechanism 51 can rotate along the periphery of the respective support shafts 53 and 54, so that the mold can be assembled on the rebar side in a factory or the like. At that time, fine adjustment of the position becomes easy, and assembly becomes easy.

Moreover, as shown in FIG. 16, even in the construction site which mounts the baseplate structure 30 to the mold 11, etc., it does not move the position of the main reinforcement at the time of construction, but moves the mold 33 side to make fine adjustments. Construction can be performed, and construction becomes very easy.

17 and 18 further show the leveling jig of the bottom plate structure, FIG. 17 is a schematic front view thereof, and FIG. 18 is a schematic side view thereof.

In these figures, the leveling jig 61 is attached to the connecting metal mechanism 41.

Here, as can be understood from FIG. 1, in the bottom plate structure 30, a plurality or a plurality of connecting metal mechanisms 41 are arranged along the arrow (X) direction, and the upper first reinforcing bar 31 is provided. ) And the lower second reinforcing bar are connected. All of these connecting metal mechanisms 41 cannot be connected to the mold 33, and the second metal reinforcing bars 32 and the mold 11 are located directly above the mold 11 shown in FIG. The level management jig 61 is attached in order to maintain a predetermined distance with the.

That is, FIG. 21, FIG. 22 is a figure which shows the state in which the level management jig 61 is attached like FIG. 17, FIG. 18, and the level management jig component as shown in FIG. (62) should be attached to the connecting metal mechanism (41).

In FIG. 17, the level management jig 61 is screwed to the level management jig part 62 fixed to the connecting metal mechanism 41 and the nut part 64 of the level management jig part 62. Has a press bolt 67.

The pressing bolt 67 is a form in which the screw is cut on the outer circumference of the long round rod, is screwed with respect to the nut member 64, and rotates along the circumference of the push rod 67 in the direction of the arrow shown in FIG. Move. As a result, the distance between the connecting metal mechanism 41 and the mold 11 is changed relatively and has a function of adjusting.

Here, the level adjustment jig part 62 which is a part fixed to the connection metal mechanism 41 is equipped with the steel plate 63 and the nut part 64 previously fixed to the steel plate 63 by welding etc. Doing.

The steel plate 63 is fixed to the connecting metal mechanism 41 by bolts or rivets using the through holes 65 and 66.

Therefore, although the steel plate 63 is smaller than the connection metal mechanism 41, in consideration of workability, it has a magnitude | size of about 5 cm x 5 cm.

In addition, the steel plate 63 overlaps the connecting metal mechanism 41, and the through holes 65 and 66 of the steel plate 63 are connected to the second through holes 48 of the connecting metal mechanism 41 described with reference to FIG. By overlapping with 48), it is possible to make the state of Figs. 21 and 22 by simple operation such as riveting in the factory.

This makes it easy to understand that when a relatively small nut member is to be directly fixed to the connecting metal mechanism 41 by welding, it will be a difficult task including its positioning. However, the above-described level management jig part 62 By using), the structure of FIG. 21 which can be carried in the construction site can be efficiently and easily manufactured.

Next, an example of the manufacturing process of the floor structure 30 of this embodiment is demonstrated easily, referring the process diagram of FIG. In addition, although the process of FIG. 23 is normally performed in a factory, it is a matter of course that part of it may be performed near a construction site.

23 (a) and 23 (b), the assembling process of the reinforcing bars is shown in the left side and the assembling process of the steel mold in the right side, but these proceed separately (separately). In addition, in FIG.23 (a)-FIG.23 (d), the upper figure is the top view of each process, and the lower figure is the front view of each process.

In the left view of Fig. 23A, first, the first reinforcing bars 31 and the second reinforcing bars are arranged in parallel at a predetermined distance, and they are connected by the connecting metal mechanism 41 (ST1-1). This process is as described in detail with reference to Figs.

In the left view of FIG. 23B, the level management jig component 62 of the level management jig 61 described in detail in FIGS. 17 to 20 is fixed to the connecting metal mechanism 41 by riveting (ST2- One).

In the left view of Fig. 23 (c), a plurality of or a plurality of first reinforcing bars 31 and second reinforcing bars 32 to which the connecting metal mechanism 41 is caulked is fixed at a predetermined pitch along the Y direction in Fig. 1. Arrange in pairs. Further, the flat plate 71 of the reinforcing bar is disposed in the direction orthogonal to the first and second reinforcing bars 31 and 32, and the flat plate 71 is spot welded to each connecting metal mechanism 41 to fix it (ST3). ). In addition to this, the flat plate 71 can also use a reinforced pipe angle material etc. in addition to this.

Here, returning to FIG. 23A and referring to the right drawing, the forming process of the mold will be described.

First, a steel mold material is processed. As the material described above, a high corrosion resistant plated steel sheet is used. This steel plate is processed into a suitable shape for forming a mold (ST1-2).

Next, in the right figure of FIG. 23 (b), the support metal mechanism 51 demonstrated in FIGS. 13-15 was put through the L-shaped metal mechanism 52 to the mold 33 formed in ST1-2. Fix by riveting (ST2-2).

Finally, in Fig. 23 (d), the reinforcing bar side having undergone the steps ST1-1 to ST3 and the mold 33 having passed through ST2-2 are fixed with rivets through the supporting metal mechanism 51, and the bottom plate is The structure 30 is completed (refer FIG. 1 etc.) (ST4).

In this state, it is transported to the construction site, and it is arrange | positioned on the mold as demonstrated in FIG. 2, At that stage, since it does not have the pushing bolt 67 like FIG. 21 and FIG. The bolt 67 is passed through the nut member 64 to adjust the height (see FIG. 17). Thereafter, concrete is poured into the mold 33.

As described above, according to the bottom structure 30 of the embodiment of the present invention, the connecting metal mechanism 41 has a strong structure by force, and furthermore, the first reinforcing bar 31 and the second reinforcing bar 32 Since it is a structure which is caulked and fixed without being welded about each rebar, it is fixed without going through a heat processing process and a robust structure is not damaged. Moreover, since the concrete flow hole 46 is formed in the connection metal mechanism 41, the concrete poured in both area | regions along the connection metal mechanism 41 can flow freely, and can be mixed uniformly.

Therefore, according to the present embodiment, it is possible to provide a floor structure having easy strength in carrying and construction work, having low construction cost, and not requiring an undesirable heat treatment step.

The present invention is not limited to each embodiment described above. Each structure in each above-mentioned embodiment may be implemented based on the combination of another structure, one part abbreviate | omitted as needed, or replacing it with another structure.

Claims (10)

Bottom plate provided with the 1st and 2nd rebar arrange | positioned in parallel, the connection metal mechanism which connects these 1st and 2nd reinforcing bars, and the mold which is fixed to the connection metal mechanism via a support metal mechanism. As a structure, The connecting metal mechanism, It is formed of a steel plate, and has a fixing part which is caulked and fixed to each of the reinforcing bars of the first and second rebars, Floor plate structure characterized in that it comprises a concrete flow hole penetrated in the thickness direction of the steel sheet. The bottom plate structure according to claim 1, wherein the fixing portion of the connecting metal mechanism is configured to wind and fix an end portion of the steel plate to the first and second reinforcing bars. 3. The bottom plate structure according to claim 1 or 2, wherein the steel plate constituting the connecting metal mechanism has a rib-shaped or furrow-shaped reinforcement part. 4. The bottom plate structure according to claim 3, wherein the reinforcing portion is formed in the fixing portion of the steel sheet constituting the connecting metal mechanism. The supporting metal mechanism according to any one of claims 1 to 4, wherein one end of the supporting metal mechanism is fixed near the center of the connecting metal mechanism, and the other end of the supporting metal mechanism is fixed to the mold. The bottom plate structure, wherein one or both of the one end fixing portion and the other end fixing portion are rotatably fixed along the circumference of the support shaft. 6. The bottom plate structure according to claim 5, wherein the rotatable fixing portion has the support shaft formed by rivets. The said connection metal mechanism is a level in any one of Claims 1-6 provided with the nut member with the steel plate fixed to the steel plate, and the long screw-type push bolt mounted so that rotation with respect to the nut member is possible. A bottom plate structure, wherein the adjustment jig is fixed. As a connecting metal mechanism for connecting parallel bars, A fixing portion formed of a substantially H-shaped steel sheet, extending from each end in the longitudinal direction of the main body portion in parallel to each other in a band shape, and being capable of being wound around the reinforcing bars and caulked and A concrete flow hole penetrating in the thickness direction of the steel sheet between the parallel strip-shaped portions constituting the fixing portion, And a rib-shaped or furrow-shaped reinforcement formed in each of the belt-shaped portions of the fixing portion. The connecting metal mechanism according to claim 8, wherein the main body portion has at least one pair of riveting through-holes arranged at a central portion thereof at predetermined intervals along the longitudinal direction. As a part for the level management jig for attaching the leveling push bolt to the connecting metal mechanism for connecting the rebars, A steel plate smaller than at least the connecting metal mechanism; A nut part fixed to an almost center portion of the steel plate and screwable to the level adjusting push bolt; Leveling jig parts, characterized in that it comprises a through hole for rivets or bolts perforated in the steel plate.

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