JP6582154B1 - Intermediate support work - Google Patents

Abstract

Provided is an intermediate support that can support a deck plate from below without using a column even if the deck plate used as a form of a concrete slab has a structure capable of changing the entire length. The intermediate support (1a) according to the present invention is perpendicular to the longitudinal direction between a pair of H-shaped steels (58a, 58a) installed so as to be parallel to each other at a predetermined interval. A pair of steel beams (2) for supporting the deck plate (51) spanned from below and a pair of H-shaped steels (58a, 58a) near the both ends so as to be orthogonal to the longitudinal direction thereof. Are provided with beam supports (3a, 3a) for supporting both ends of the steel beam (2) while being attached to the H-shaped steel (58b, 58b).

Description

  The present invention relates to an intermediate support for supporting a formwork when a concrete slab is formed on a floor or ceiling of a building, and in particular, an intermediate support that can support an intermediate part of a formwork without using a column. About.

In a building made of reinforced concrete or steel frame as a structural material, when a concrete slab is formed on a floor or a ceiling, a deck plate obtained by processing a metal plate is often used as a part of a formwork.
Since the conventional deck plate is welded to the upper surface of the beam or fixed to the beam by bolting or the like, it is difficult to separate and recover from the solidified concrete slab. However, since such a deck plate finishes its role when the concrete is solidified and the slab is formed, it has a structure that can be easily separated from the concrete slab so that it can be efficiently recovered after the concrete slab is constructed. It is desirable to be.

For example, Patent Document 1 describes an invention relating to a deck plate that can efficiently adjust the overall length and that can be collected and used repeatedly after construction of a concrete slab and a manufacturing method thereof. Yes.
Here, a general structure of a deck plate capable of adjusting the overall length as described in Patent Document 1 will be described with reference to FIGS. 11 and 12. However, FIGS. 11A and 11B are a front view and a plan view of the above-described deck plate, respectively, and FIGS. 12A and 12B are the deck plates shown in FIG. FIG. 12 (c) and FIG. 12 (d) are plan views of these formwork members.

As shown in FIG. 11 and FIG. 12, the deck plate 51 is welded to the flat plates 54 and 55 whose upper surfaces 54a and 55a become molding surfaces when placing concrete and the lower surfaces 54b and 55b of the flat plates 54 and 55. It consists of metal mold members 52 and 53 having a thickness of about 0.8 mm, which are constituted by square pipes 56 and 57 fixed by bonding or rivets or screws.
One end of the square pipe 56 is pressed and deformed in a flat shape, and a long metal member (not shown) is inserted into the end so as to close the end (hereinafter referred to as the flat end 56b). ing. The outer dimension of the square pipe 56 is smaller than the inner dimension of the square pipe 57, and the opening end 56a is formed so as to be inserted into the opening end 57a.

The upper surface 56c of the square pipe 56 is spot-welded to the flat plate 54 at two locations near the center in the longitudinal direction and near the flat end 56b. The upper surface 57b of the square pipe 57 is centered in the longitudinal direction with respect to the flat plate 55. Spot welding is performed at three locations near and near both ends. Thus, the mold member 52 inserts the square pipe 56 into the square pipe 57 of the mold member 53 so that the flat plate 55 is placed between the lower surface 54b of the flat plate 54 and the upper surface 56c of the square pipe 56. It is possible to insert only the length.
Since the flat plates 54 and 55 are as thin as about 0.8 mm, the flat plate 55 is inserted between the lower surface 54b of the flat plate 54 and the upper surface 56c of the square pipe 56, and a part of the flat plates 54 and 55 is overlapped. Thereafter, even when concrete is placed on the upper surfaces 54a and 55a, there is no possibility that the concrete will enter between the lower surface 54b of the flat plate 54 and the upper surface 55a of the flat plate 55.

Thus, the deck plate 51 connects the mold member 52 to the mold member 53 so that the open end 56a of the square pipe 56 is inserted into the open end 57a of the square pipe 57, and FIG. As shown by an arrow X, the overall length can be easily adjusted by sliding the mold members 52 and 53 with each other.
Since the deck plate described in Patent Document 1 has such a structure, it can be easily separated from the concrete slab, and has a wide range of use after being recovered, so it is suitable for reuse. In addition, by adjusting the overall length, there is also an advantage that it is difficult to receive restrictions on the installation location during reuse.

International Publication No. 2015/029197 Pamphlet

A concrete slab construction method using the deck plate 51 shown in FIGS. 11 and 12 will be described with reference to FIG. FIG. 13 is a view showing a state where the deck plate 51 shown in FIGS. 11 and 12 is bridged between a pair of H-shaped steels.
In the case of a building made of steel frame as a structural material, as shown in FIG. 13, the upper and lower flanges are horizontal, and a plurality of pieces are placed between a pair of H-shaped steels 58a and 58a installed in parallel to each other at a predetermined interval. The deck plate 51 is bridged. However, square bars 59, 59 are installed in the vicinity of the upper portions of the H-shaped steels 58a, 58a in parallel with the longitudinal direction, and both ends of the deck plate 51 are actually on the upper surfaces of the pair of square bars 59, 59. Both ends are placed respectively.
Further, in the case of a building made of reinforced concrete as a structural material, a beam formwork is installed on a support work assembled on a slab or the like on a lower floor that has already been formed. Then, a plurality of sheets are placed between a pair of beam molds arranged in parallel with each other at a predetermined interval so that the end is placed on the upper surface of the square member fixed to the side part of the beam mold frame. A deck plate 51 is stretched over.

In any of the cases described above, the upper surfaces 54a and 55a of the flat plates 54 and 55 (see FIG. 11A) are supported with the central portion of the deck plate 51 supported by the pillars constituting a part of the support work. A formwork is formed, and concrete is placed inside the formwork.
When the concrete in the mold is solidified, the mold, columns, deck plate 51, etc. are removed. If all the columns are removed at this time, the deck plate 51 that has lost its support is inadvertently removed. There is a risk of falling. For this reason, normally, a new support column is installed for a predetermined deck plate 51 to support a part different from the part previously supported by the support column, and after all the deck plates 51 have been removed, The column is removed.

As described above, the deck plate 51 has both ends on the upper surface of the square member fixed to the side portions of the pair of H-shaped steel and the beam form frame which are installed so as to be parallel to each other at a predetermined interval during the construction of the concrete slab. Concrete is placed on the upper surface in a state where each is placed. Therefore, a bending moment that causes the center portion in the longitudinal direction to be greatly bent is generated in the deck plate 51. However, if the deck plate 51 bends due to the action of the bending moment, problems such as failure to maintain the flatness of the concrete slab occur. Therefore, as described above, conventionally, including the invention described in Patent Document 1, the deck plate 51 has been required to support the center portion of the deck plate 51 with the support column.
However, when the support is used in this way, there is a problem that not only the material cost is required but also the installation and removal takes time and the entire construction period becomes long, so that the work cost increases.

  The present invention has been made in response to such a conventional situation, and even if the deck plate used as a formwork of a concrete slab has a structure capable of changing the entire length, the deck plate can be used without using a support column. An object of the present invention is to provide an intermediate support that can support the pallet from below.

  In order to achieve the above object, a first invention is an intermediate support for use in forming a concrete slab in a building having a steel frame as a structural material, and is a pair of first installed so as to be parallel to each other. Steel installed in parallel with the pair of first H-shaped steels in a state where the upper surface is in contact with the lower surface of the deck plate that is bridged so as to be orthogonal to the longitudinal direction between the H-shaped steels of 1 The steel beam and both ends of the steel beam are supported in a state of being attached to a pair of second H-shaped steels installed in the vicinity of both ends of the pair of first H-shaped steels so as to be orthogonal to their longitudinal directions. A pair of beam supports, and the beam support has a square member receiving bracket on which a square member is placed, and is formed so as to be able to support the end portion of the steel beam via the square member. It is characterized by.

  In 1st invention, it has the effect | action that a deck plate is supported from the downward direction by steel beams. At this time, since the beam support for supporting the steel beam is attached to the second H-shaped steel, there is no need to install a deck plate or a column for supporting the steel beam. Furthermore, in 1st invention, since the edge part of a steel beam is a structure supported via a square by a beam support, the effect | action that a plurality of steel beams are supported by a pair of beam support Have

  According to a second invention, in the first invention, the beam support is provided with a first male screw portion and a female screw portion on the outer peripheral surface and the inner peripheral surface, respectively, and the first support fitting is attached to one end. A first cylindrical body, a second cylindrical body having a second receiving metal fitting attached to one end thereof, and a second male screw portion screwed into the female screw portion are provided on the outer peripheral surface. The first column is screwed into one end and the other end is controlled by the second cylindrical body to move the first cylindrical body in the direction of the cylindrical axis and is held rotatably about the cylindrical axis A worm installed on the upper surface of the second receiving metal fitting so as to be screwed into the inclined teeth provided on the other end of the first support column, and the first cylindrical body with respect to the second cylindrical body A first anti-rotation means that allows non-rotation about the cylindrical axis while allowing movement in the cylindrical axis direction; A cylindrical support metal fitting rotatably attached to the cylindrical body, a square member receiving metal fitting installed in the support metal fitting, and a second male threaded portion in a state of being screwed into the first male thread portion of the first cylindrical body. And a first nut installed between the cylindrical body and the support metal fitting, and the square member receiving metal has a substantially rectangular shape in plan view and has one end so as to be orthogonal to the cylindrical axis direction of the first cylindrical body. And a first upright portion extending from the other end of the flat portion toward the first receiving bracket in parallel with the cylindrical axis direction of the first cylindrical body. The flat portion is formed such that a square member can be disposed between the first upright portion and the support metal fitting.

In the second invention, the beam support is installed such that the first cylindrical body is disposed above the second cylindrical body and the cylindrical axis direction of the first cylindrical body is parallel to the vertical direction. When the worm is rotated in a state where the worm is rotated, the first column rotates, and accordingly, the first cylindrical body in which the female screw portion is screwed with the second male screw portion of the first column is in the vertical direction. As a result, the total length of the beam support changes.
Further, when the first nut is rotated in this state, the first nut moves in the direction of the cylindrical axis with respect to the first cylindrical body, so that the support fitting moves in the direction of the cylindrical axis of the first cylindrical body. Moving.

  As described above, in the second invention, in addition to the action of the first invention, the length of the entire beam support is changed by a simple operation of rotating the worm. Further, in the beam support, the first receiving bracket and the second receiving bracket are brought into contact with the upper and lower flanges of the second H-shaped steel, respectively, and the side surface of the square member receiving bracket is brought into contact with the first upright portion. When the first nut is rotated in a state where the square member is placed on the upper surface of the flat part so as to be in contact with each other, the square member receiving metal member installed on the support metal member moves in the vertical direction, so that the flat part of the square member metal fitting is It has the effect | action that the height of the square bar mounted in this changes.

According to a third aspect, in the second aspect, the beam support is provided with a second male screw portion on the outer peripheral surface instead of including the first cylindrical body, the worm, the first support column, and the first detent means. And a second support column having a first support fitting attached to one end thereof, a second nut screwed into a second male thread portion of the second support column, and a second support column. And a second anti-rotation means that allows the cylinder to move in the direction of the cylinder axis while being non-rotatable about the cylinder axis, and the support fitting is a first cylinder. The second nut is rotatably extrapolated to the second column instead of the body, and the first nut is screwed into the second male screw portion of the second column instead of the first cylindrical body. The second nut is disposed below the first nut and the second male thread of the second support column. It is characterized in that in a state screwed in the section is provided between the second cylinder and the first nut.
In the third aspect, by rotating the second nut, the same effect as that obtained by rotating the worm in the second aspect is exhibited.

  A fourth invention is an intermediate support used in forming a concrete slab in a building made of reinforced concrete as a structural material, and is provided between a pair of first beam molds installed so as to be parallel to each other. A pair of steel beams installed in parallel with the pair of first beam molds in a state where the upper surface is in contact with the lower surface of the deck plate that is bridged so as to be orthogonal to the longitudinal direction thereof, A pair of steel beams that support both ends of the steel beam in a state of being attached to a pair of second beam molds that are respectively installed in the vicinity of both ends of the first beam mold frame so as to be orthogonal to the longitudinal direction thereof. A beam support, and the beam support has a square metal receiving bracket on which a square is placed, and is formed so as to be able to support the end of the steel beam via the square. To do.

  When forming a concrete slab in a building using reinforced concrete as a structural material, the fourth invention has the same effect as that exhibited by the first invention when forming a concrete slab in a building using a steel frame as a structural material. Is demonstrated by.

  According to a fifth invention, in the fourth invention, the beam support has a rectangular shape in plan view, and an elongate member formed with an upright portion so that one end is bent downward at a right angle, and the elongate member A rectangular tube-shaped support column having an upper end connected to the lower surface of the column, a square tube-shaped support bracket having an upper end rotatably connected to the column in a state of being loosely inserted outside the support column, and the support bracket Screwed into the support bracket so that the tip can protrude into the first bolt hole provided on one of the two side surfaces parallel to the rotation axis of the support bracket and the square bracket A square member receiving bracket having a substantially rectangular shape in a plan view and having one end joined so as to form an acute angle with respect to a side surface of the supporting bracket provided with the first bolt hole. And a first portion extending upward from the other end so as to be orthogonal to the flat portion And Tatsubu consists, flat portion, and is characterized in that it is formed to be arranged square timber between the first straight portion and the support bracket.

  In 5th invention, in the 2nd beam formwork provided with the weir board and the horizontal pier, the elongate member is mounted on the upper surface of the horizontal pier so that the upright part is locked to the upper side surface of the dam. Thus, the beam support is fixed to the second beam formwork. In addition, after the concrete slab is constructed, the beam support can be separated from the concrete slab by removing the second beam formwork. That is, in the fifth invention, the work of attaching the beam support to the second beam formwork and the operation of collecting the beam support from the concrete slab are easy.

In addition, when the beam support is attached to the second beam formwork, the support metal has its own weight, so that the front end side of the flat part of the square metal receiving metal (the side connected to the first upright part). A rotational moment is generated that attempts to move the. At this time, the tilt adjustment bolt with the tip in contact with the support post prevents the support bracket from rotating, and the longitudinal direction of the flat portion of the square member bracket (the base end side joined to the side surface of the support bracket) From the direction toward the tip side) and the horizontal direction.
That is, in the fifth invention, the longitudinal direction of the flat portion is set to the horizontal direction by operating the inclination adjusting bolt to adjust the length of the tip portion protruding from the first bolt hole of the support fitting. It has the effect | action that the attitude | position of a square metal receiving metal fitting is maintained in the state which made the predetermined angle.

The sixth invention is the invention according to any one of the first to fifth inventions, wherein the beam support is provided with two flat portions that are parallel to each other, instead of providing the first upright portion in the square member bracket. A pair of second upright portions extending from the end edge is provided with a beam receiving bracket extending upward.
In the sixth invention, in addition to the action of any one of the first to fifth inventions, the end portion of the steel beam via the square member, such as the vicinity of the end portion of the H-shaped steel or the beam form frame. Even if it is a place where the beam support of the structure which supports can not be installed, it has the effect | action that a steel beam is supported by the beam support.

  According to a seventh invention, in any one of the first to sixth inventions, the steel beam has a long steel member and a desired interval from one longitudinal end of the long member. A pair of fixing brackets made of a steel reinforcing member provided on the first surface, a steel square pipe having a second bolt hole formed on the lower surface, and a tip projecting into the square pipe. A bolt screwed into the second bolt hole as possible, and the reinforcing member can be at least partially inserted into the square pipe from the other end side in the longitudinal direction of the long member together with the long member. It is characterized by being formed.

  In the seventh invention, in addition to the action of any one of the first to sixth inventions, the length of the entire steel beam is changed by sliding the fixing bracket in the longitudinal direction of the square pipe. It has the action. Moreover, since it is lighter than the well-known support beam material called a peco beam, and since there are few members, it has the effect | action that manufacturing cost is cheap. Further, by rotating the bolt screwed into the second bolt hole of the square pipe and pressing the lower surface of the square pipe with the tip protruding from the second bolt hole, the fixing bracket is attached to the square pipe. Have the effect of being fixed.

When the deck plate is used as a formwork for a concrete slab, a column for supporting the deck plate from below is installed so that the deck plate is not bent by a concrete load. However, when the support is used, not only is the material cost required, but it takes time for installation and removal, and the entire construction period becomes longer, so that the work cost increases. In particular, when the deck plate is made up of multiple formwork materials so that the overall length can be changed, it is necessary to install support posts at the connection parts of each formwork material. The cost is even higher.
On the other hand, in the first invention, even when a deck plate having a structure capable of changing the entire length is used as a formwork of a concrete slab, the deck plate can be supported from below without using a column. It is. In this case, since the expense required for installation and removal of a support | pillar does not generate | occur | produce, the construction cost of concrete slab can be held down cheaply. Such an effect is particularly prominent when a deck plate composed of a plurality of formwork materials is used as a formwork for a concrete slab so that the overall length can be changed.
In the first invention, since a plurality of steel beams can be supported by a pair of beam supports, the number of installed beam supports per second H-shaped steel can be reduced. The work required for attaching and removing the beam support to the H-shaped steel of 2 can be made more efficient.

  According to the second invention, in addition to the effects of the first invention, the first cylindrical body is obtained by rotating the worm after the beam support is installed between the upper flange and the lower flange of the second H-shaped steel. And raise the first cylindrical body by further rotating the worm in a state where the first bracket and the second bracket are in contact with the lower surface of the upper flange and the upper surface of the lower flange, respectively. Then, since the lower surface of the upper flange and the upper surface of the lower flange are pressed by the first receiving metal fitting and the second receiving metal fitting, the beam support can be securely fixed to the second H-shaped steel. Play.

Further, according to the second invention, since the length of the entire beam support can be easily adjusted, even for a plurality of types of second H-shaped steels having different distances from the upper flange to the lower flange. By changing the overall length of the beam support according to the distance, the beam support can be installed without hindrance.
Furthermore, according to the second invention, since it is easy to adjust the height of the upper surface of the square member placed on the square member receiving member of the beam support, another second H-shaped steel having a different flange thickness can be used. Even when used, it is not necessary to adjust the height of the upper surface of the steel beam by installing a spacer on the upper surface of the square bar so that the upper surface of the steel beam contacts the lower surface of the deck plate. Therefore, according to the second aspect, the deck plate can be installed efficiently in a short time.

  According to the third aspect, by rotating the second nut, the same effect as in the case of rotating the worm in the second aspect is exhibited.

  According to 4th invention, when forming concrete slab in the building which uses reinforced concrete as a structural material, when forming concrete slab in the building which uses steel frame as a structural material, it is the same effect as the 1st invention shows The effect of.

According to the fifth invention, after attaching the beam support to the second beam formwork, the inclination adjusting bolt can be rotated to adjust the inclination of the flat portion of the square member receiving metal relative to the horizontal direction. . Therefore, when the concrete slab is formed, the inclination adjusting bolt is operated to shorten the length of the tip protruding from the bolt hole of the support bracket. Because it rotates, it can be removed. And if a square is removed, it will be in the state which can also remove steel beams easily. Furthermore, when the second beam formwork is removed, the beam support can be recovered from the concrete slab.
As described above, according to the fifth invention, the work of attaching the beam support to the second beam formwork and the operation of recovering the beam support from the concrete slab are easy. In addition to the effects of the fourth invention, Thus, the deck plate can be installed and removed efficiently in a short time.

  According to the sixth invention, in addition to the same effects as those of any of the first to fifth inventions, the steel beam is passed through the square bar as in the vicinity of the end of the H-shaped steel or the beam form frame. The steel beam can be installed even in a place where a beam support having a structure that supports the end of the steel beam cannot be installed.

  According to the seventh invention, after the concrete slab is formed, the work of removing the steel beam from the beam support is facilitated by shortening the entire length of the steel beam. And if a steel beam is such a structure, since the whole length can be adjusted, the utilization range after collection | recovery is wide. That is, according to the seventh invention, in addition to the same effect as any one of the first invention to the sixth invention, there is an effect that the steel beam can be easily recovered and reused. .

(A) is the perspective view which showed the state by which the deck plate spanned between a pair of H type steel was supported by Example 1 of the intermediate support work which concerns on embodiment of this invention, (b) It is an A direction arrow directional view in the figure (a). (A) is the perspective view which showed the state by which the deck plate spanned between a pair of H type steel was supported by Example 1 of the intermediate support work which concerns on embodiment of this invention, (b) It is a B direction arrow directional view in the figure (a). (A) And (b) is a front view of the square pipe which comprises steel beams, respectively, and a perspective view of a fixing bracket, (c) is a perspective view of the reinforcement member which comprises a fixing bracket. (A) And (b) is a perspective view which shows the state in which the two types of beam support tools which comprise the intermediate support of Example 1 were attached to H-shaped steel. (A) is the figure which showed the modification of FIG.1 (b), (b) is CC sectional view taken on the line in FIG. 4 (a). (A) thru | or (c) is the front view which showed the state by which the deck plate spanned between a pair of H type steel was supported by the intermediate support of Example 2 which concerns on embodiment of this invention. (A) And (b) is a front view of two types of beam supports which comprise the intermediate support work of a present Example, (c) And (d) is shown to the figure (a) and (b), respectively. It is a top view of the square bar metal fitting and beam metal fitting, (e) is a front view of the support | pillar shown to the figure (a) and (b). (A) thru | or (c) is the front view which showed the state by which the deck plate spanned between a pair of beam formwork was supported by the intermediate support of Example 3 which concerns on embodiment of this invention. . (A) is the enlarged view of the D section in FIG.8 (b), (b) is a top view of the latching metal fitting shown to the same figure (a), (c) is F in the same figure (a). FIG. (A) is the enlarged view of the E section in FIG.8 (c), (b) is GG arrow sectional drawing in the figure (a). (A) And (b) is the front view and top view of a common deck plate which can respectively change full length. (A) And (b) is a front view of 2 types of formwork members which comprise the deck plate shown to Fig.11 (a), (c) and (d) are the figure (a) and (b), respectively. It is a top view of the formwork member shown in FIG. It is the figure which showed the state by which the deck plate shown in FIG.11 and FIG.12 was spanned between a pair of H-shaped steel.

The intermediate support according to the present invention will be specifically described with reference to FIGS. The intermediate support of the present invention has a deck plate spanned between a pair of beam forms and a pair of H-shaped steels when a concrete slab is formed in a structure using reinforced concrete or steel reinforced concrete as a structural material. It is supported from below.
Therefore, in the following description, expressions such as “upper surface”, “lower surface”, “horizontal”, and “vertical” are used on the assumption that the deck plate is actually installed as such.

1 (a) and 2 (a) are perspective views showing a state in which a deck plate spanned between a pair of H-shaped steels is supported by the intermediate support of the present invention, FIG. 1 (b). FIG. 2B is a view in the direction of arrow A in FIG. 1A and a view in the direction of arrow B in FIG.
Note that FIG. 2A corresponds to FIG. 13 in which the intermediate support of the present invention is added, and FIG. 1A rotates FIG. 2A 90 degrees around an axis parallel to the vertical direction. It corresponds to the figure made. However, in FIG. 1A, illustration of the H-shaped steel 58a shown in FIG. 2A is omitted, and in FIG. 2A, illustration of the H-shaped steel 58b shown in FIG. 1A is omitted. . FIG. 2A shows the whole of four deck plates 51 out of the seven deck plates 51 that are partially omitted in FIG. Further, the components shown in FIGS. 11 to 13 are denoted by the same reference numerals and the description thereof is omitted.

As shown in FIGS. 1 and 2, the intermediate support 1a according to the present invention includes a longitudinal direction between a pair of H-shaped steels 58a and 58a installed so as to be parallel to each other at a predetermined interval. A steel beam 2 installed in parallel with the pair of H-shaped steels 58a, 58a and a pair of H-shaped steels 58a, 58a in a state where the upper surface is in contact with the lower surface of the deck plate 51 bridged so as to be orthogonal to each other. Beam supports 3a for supporting both ends of the steel beam 2 via the square members 59 in a state of being attached to a pair of H-shaped steels 58b and 58b respectively installed in the vicinity of both ends of the steel beam so as to be orthogonal to the longitudinal direction thereof. , 3a.
As shown in FIG. 2 (a) or FIG. 2 (b), the beam support 3a is a deck plate support that supports both ends of the deck plate 51 while being attached to a pair of H-shaped steels 58a and 58a. It has a structure that can be used as a tool.

FIGS. 3A and 3B are a front view of a square pipe 4 constituting the steel beam 2 and a perspective view of the fixing bracket 5, respectively. FIG. 3C is a reinforcing member constituting the fixing bracket 5. 6 is a perspective view of FIG.
As shown in FIG. 3 (a), the steel square pipe 4 has a vertically long shape in which the cross-section has a shorter length in the width direction than the length in the height direction. The pedestal 9 having a bolt hole (not shown) into which the bolt 8 is screwed and a bolt hole (not shown) in which an internal thread portion screwed into the bolt 8 is formed on the inner peripheral surface is the two bolt holes. Bolts 8 are provided so as to communicate with each other. Then, the bolt 8 is screwed into the bolt hole of the square pipe 4 so that the lower surface of the fixing fitting 5 inserted into the square pipe 4 can be pressed by a tip portion protruding into the square pipe 4 as will be described later. ing.

In the square pipe 4 having such a structure, when the bolt 8 screwed into the bolt hole is turned, the bolt 8 is held by the pedestal 9 so that the central axis is not shaken.
When the center axis is shaken, it is difficult to turn the bolt 8 and the force to turn the bolt 8 is applied unevenly to the edge of the bolt hole of the square pipe 4, so that the portion may be damaged. In the square pipe 4, the pedestal 9 is provided for the bolt 8, so that not only the bolt 8 is easy to operate, but also the bolt hole of the square pipe 4 can be prevented from being damaged.

As shown in FIGS. 3 (b) and 3 (c), the steel fixing bracket 5 is a metal having an upright portion 7a having a rectangular shape in plan view and one end bent downward at a right angle. It consists of a long member 7 made of metal and a reinforcing member 6 provided on the lower surface 7b of the long member 7. Further, the elongate member 7 is provided with a nail hole 7c in the vicinity of the upright portion 7a. The nail hole 7 c is used when one end of the long member 7 placed on the upper surface of the square member 59 is nailed to the square member 59.
The reinforcing member 6 has a trapezoidal shape when viewed from the side, and a standing plate 11 and a connecting plate 12 are installed at both ends in the longitudinal direction with respect to the reinforcing plate 10 joined to the lower surface 7b in the center of the long member 7 in the width direction. In addition, a long plate 13 is installed on the lower surface.

The long member 7 and the reinforcing member 6 have a width (length in the short direction) and a height (length in a direction perpendicular to the long member 7) of the width and height of the opening of the square pipe 4 ( The inner dimensions are shorter than the inner dimensions.
That is, the fixture 5 has a structure that can be inserted into the square pipe 4. Therefore, as shown in FIG. 1A or FIG. 1B, the fixture 5 is used in a state of being inserted into the square pipe 4.

  In the fixing bracket 5 having such a structure, the reinforcing plate 10 acts so as to increase the compressive strength of the reinforcing member 6 in the direction perpendicular to the long member 7 and the long plate 13 and other directions. Further, in the fixing bracket 5, the reinforcing member 6 is located on the side close to one end in the longitudinal direction of the long member 7 and is farthest from the long member 7 in the direction orthogonal to the lower surface 7 b (that is, the upright portion). The end of the long plate 13 on the side close to 7a) and the connecting plate 12 connecting the lower surface 7b of the long member 7 where the reinforcing member 6 is not provided, and the reinforcing on the side in contact with the connecting plate 12 The end portion of the plate 10 has an effect of increasing the bending strength of the long member 7 where the reinforcing member 6 is not provided. Accordingly, in the fixing bracket 5, when the steel beam 2 is bridged between the H-shaped steels 58b and 58b, the long member 7 and the reinforcing member 6 at the portion placed on the upper surface of the square member 59 are not easily damaged. .

  Further, the fixture 5 inserted in the square pipe 4 is slidable in the longitudinal direction of the square pipe 4. In this state, when the bolt 8 screwed into the bolt hole of the square pipe 4 and the bolt hole of the pedestal 9 is advanced, the reinforcing member 6 of the fixing bracket 5 is caused by the tip of the bolt 8 protruding into the square pipe 4. The lower surface of the long plate 13 that constitutes is pressed. Then, when the bolt 8 is further advanced and the pressing force of the bolt 8 against the lower surface of the long plate 13 is increased, the fixing metal 5 finally becomes immovable with respect to the square pipe 4. That is, the bolt 8 has a function of fixing the fixing bracket 5 to the square pipe 4.

In the fixing metal 5, one end of the long member 7 protruding from the square pipe 4 is placed on the upper surface of the square member 59 in a state where the long member 7 and a part of the reinforcing member 6 are inserted into the square pipe 4. (See FIG. 1B).
At this time, even if a horizontal force is applied to the fixing bracket 5 so as to be separated from the square member 59, the upright portion 7a of the long member 7 is locked to the side surface of the square member 59, so that the fixing bracket 5 moves. Thus, one end of the long member 7 is not detached from the upper surface of the square member 59.
That is, since the upright portion 7a of the long member 7 is locked to the side surface of the square member 59, the movement of the fixing metal 5 in the direction away from the square member 59 is restricted, so that the operator can move to the H-shaped steels 58b and 58b. The work of bridging the steel beam 2 between the installed square members 59, 59 can be performed safely.

  In addition, the fixing bracket 5 inserted into the square pipe 4 is slidable in the longitudinal direction of the square pipe 4 by loosening the bolt 8 screwed into the bolt hole of the square pipe 4. That is, the steel beam 2 in which the fixing brackets 5 and 5 are respectively inserted at both ends of the square pipe 4 is loosened by sliding the fixing brackets 5 and 5 in the longitudinal direction of the square pipe 4 by loosening the bolts 8. The length can be easily changed.

Thus, according to the intermediate support 1a, the work of removing the steel beam 2 from the beam supports 3a and 3a can be easily performed by shortening the total length of the steel beam 2 after the concrete slab is formed. it can. Moreover, since the steel beam 2 can change full length, the utilization range after collection | recovery is wide. That is, in the intermediate support 1a, the steel beam 2 can be easily reused. The steel beam 2 is lighter than the well-known support beam material called a peco beam and has few members, so that it can be manufactured at low cost.
Furthermore, in the intermediate support 1a, since the beam support 3a for supporting the steel beam 2 is attached to the H-shaped steel 58b, it is necessary to install a column for supporting the deck plate 51 and the steel beam 2. There is no. In the intermediate support 1a, since the end of the steel beam 2 is supported by the beam support 3a via the square member 59, a plurality of steel beams 2 are formed by the pair of beam supports 3a and 3a. It is possible to support.

  Therefore, in a building made of steel frame as a structural material, when the intermediate support 1a is used when the concrete slab is formed using the deck plate 51 having a structure that can change the entire length as a formwork, the deck can be used without using a support column. Since the plate 51 can be supported from below, the cost required for installing and removing the column does not occur, and the construction cost of the concrete slab can be kept low. Further, since a plurality of steel beams 2 can be supported by a pair of beam supports 3a, 3a, the number of installed beam supports 3a with respect to one H-shaped steel 58b can be reduced, and the beam supports 3a can be attached and detached. It is possible to improve the efficiency of the required work.

  4 (a) and 4 (b) are perspective views showing a state where two types of beam supports 3a and 3b constituting the intermediate support 1a are attached to the H-shaped steel. FIG. 5A is a view showing a modification of FIG. 1B, and FIG. 5B is a cross-sectional view taken along the line CC in FIG. 4A. FIG. 5A corresponds to a view in which the beam support 3b is used instead of the beam support 3a in FIG. 1B. Moreover, in FIG. 4 (a), FIG.4 (b), and FIG.5 (b), H-shaped steel and a square are shown with the broken line.

  As shown in FIGS. 4 (a) and 5 (b), the beam support 3a includes an upper cylindrical body 14 in which a male screw portion 14a and a female screw portion 14b are provided on the outer peripheral surface and the inner peripheral surface, respectively, An upper receiving metal 15 attached to the upper end of the cylindrical body 14, a lower cylindrical body 17 having a lower receiving metal 16 attached to the lower end, a worm 18 installed on the upper surface of the lower receiving metal 16, and an upper cylindrical body 14 The upper end is screwed in, the lower end is held by the lower cylindrical body 17 so as to be rotatable about the cylindrical axis, and the support column 19 whose movement in the direction parallel to the cylindrical axis is restricted, the upper cylindrical body 14 and the lower cylindrical body A connecting member 20 having both ends fixed to the cylindrical body 17, a cylindrical support fitting 21 that is rotatably inserted into the upper cylindrical body 14, a square member receiving fitting 22 and a reinforcing fitting that are installed on the supporting fitting 21. 23 and male screw of the upper cylindrical body 14 And a nut 24 which is installed between the lower cylindrical body 17 and the support bracket 21 in a state screwed in 14a.

  The support column 19 is provided with oblique teeth (not shown) that are screwed to the worm 18 at the lower portion of the outer peripheral surface, and a male screw portion 19a that is screwed to the female screw portion 14b at the upper portion of the outer peripheral surface. It is inserted into the lower cylindrical body 17 so as to be rotatable from above. Further, the connecting member 20 includes three cylindrical bodies 20a to 20c that are formed so that the side surfaces thereof are tapered and the diameter is sequentially reduced, and are slidably fitted, and the cylindrical bodies 20a and 20b. As a swing-out type fishing rod, the whole is configured to be extendable and retractable. That is, the connecting member 20 having a structure that expands and contracts as a whole prevents the upper cylindrical body 14 from rotating relative to the lower cylindrical body 17 in the direction of the cylindrical axis and non-rotatably around the cylindrical axis. As a function.

  The upper receiving bracket 15 is provided with a rubber plate 25a on the upper surface and is disposed so as to be orthogonal to the cylindrical axis direction of the upper cylindrical body 14, and has a flat portion having a rectangular shape in plan view, and an upper portion from the end of the flat portion. It consists of an upright part extended so that it may go to, and it has the shape where the rectangular flat plate material was bent at one end at a right angle. The upper receiving metal 15 is welded to the upper end of the upper cylindrical body 14, and a rubber plate 25a is screwed to the upper surface of the flat portion.

The lower bracket 16 has a pair of flat portions arranged so that both ends of a rectangular flat plate material are bent to form a “U” shape in a side view and are orthogonal to the cylindrical axis direction of the lower cylindrical body 17. And an upright portion provided so as to connect one ends of the pair of flat portions. However, the lower receiving bracket 16 is welded to the lower end of the lower cylindrical body 17, and a rubber plate 25b is screwed to the lower surface of the flat portion.
The lower bracket 16 may have a structure in which means for temporarily holding the lower flange of the H-shaped steel 58b is provided. In this case, as will be described later, it is possible to expect an effect that the safety when raising or lowering the upper cylindrical body 14 is further increased.

The square member bracket 22 has a substantially rectangular shape in plan view, and has a flat portion 22a whose one end is welded to the support bracket 21 so as to be orthogonal to the cylindrical axis direction of the upper cylindrical body 14, and an upper side from the other end of the flat portion 22a. It consists of the upright part 22b extended so that it may face, and has comprised the shape where the end of the flat plate material was bent at right angle. The flat portion 22a is formed so that a square member 59 can be disposed between the upright portion 22b and the support fitting 21.
The reinforcing metal fitting 23 is made of a plate material having a substantially rectangular shape in plan view, and two end faces sandwiching a right angle are welded to the outer peripheral surface of the upper cylindrical body 14 and the lower surface of the square material receiving metal fitting 22, respectively.
Further, four protrusions 24 a are provided on the outer peripheral surface of the nut 24 at equal intervals in the circumferential direction.

In the beam support 3a having such a structure, the upper cylindrical body 14 is disposed above the lower cylindrical body 17 so that the cylindrical axis direction of the upper cylindrical body 14 is parallel to the vertical direction. When the worm 18 is rotated in the state, the support column 19 rotates. As a result, the upper cylindrical body 14 in which the female screw portion 14 b is screwed with the male screw portion 19 a of the support column 19 moves in the vertical direction. Thereby, the full length of the beam support 3a changes. That is, in the beam support 3a, since the entire length is changed by a simple operation of rotating the worm 18, even for a plurality of types of H-shaped steel 58b having different distances from the upper flange to the lower flange, By adjusting the overall length according to the distance, it can be installed without hindrance.
Then, after the beam support 3a is installed between the upper and lower flanges of the H-shaped steel 58b, the worm 18 is rotated to raise the upper cylindrical body 14, and the upper receiving metal 15 and the lower receiving metal 16 are attached to the upper and lower flanges. When the upper cylindrical body 14 is raised by further rotating the worm 18 in the contacted state, the upper and lower flanges are pressed by the upper receiving bracket 15 and the lower receiving bracket 16, respectively. It can be reliably fixed to the mold steel 58b.

Further, in the beam support 3a, when the nut 24 is rotated with the protrusion 24a, the support fitting 21 moves in the vertical direction by moving relative to the upper cylindrical body 14 in the cylindrical axis direction. That is, in the beam support 3 a, when the nut 24 is rotated with the square member 59 placed on the upper surface of the flat portion 22 a with the side member being in contact with the upright portion 22 b, the square member is rotated. This has the effect that the height of the upper surface of the square member 59 placed on the receiving bracket 22 changes.
Thus, in the beam support 3a, since it is easy to adjust the height of the upper surface of the square member 59 installed on the square member bracket 22, in the intermediate support 1a, another H-shaped steel 58b having a different flange thickness is used. Also in the case of using, the work of adjusting the height of the upper surface of the steel beam 2 is performed by installing a spacer on the upper surface of the square member 59 so that the upper surface of the steel beam 2 is in contact with the lower surface of the deck plate 51. There is no need. Therefore, according to the intermediate support 1a, the installation work of the deck plate 51 can be performed efficiently in a short time.

As shown in FIG. 4B, the beam support 3b has a structure in which a beam support 26 is provided instead of the square member support 22 in the beam support 3a. The beam bracket 26 has a flat portion 26a having one end welded to the support bracket 21 so as to be orthogonal to the cylindrical axis direction of the upper cylindrical body 14 to form a rectangular shape in plan view, and a width direction (reinforcing bracket) of the flat portion 26a. 23 (refer to FIG. 5 (b)) a pair of upright portions 26b and 26b extending upward from both ends of the flat surface, and both ends of the flat plate material are bent at right angles. It has a simple shape. Further, the beam receiving bracket 26 is formed such that the interval between the upright portions 26b and 26b is wider than the width of the long member 7 of the fixing bracket 5, and the end of the steel beam 2 is placed on the upper surface of the flat portion 26a. It has a possible structure (see FIG. 5A). In addition, about the steel beam 2 supported by this beam support 3b, the upright part 7a shall not be provided in the elongate member 7 of the fixing bracket 5. FIG.
Near the ends of the H-shaped steels 58a and 58b, the beam support 3a having a structure for supporting the end of the steel beam 2 via the square member 59 cannot be installed in many cases. On the other hand, since the beam support 3b has a structure that directly supports the end of the steel beam 2 without using the square member 59, the beam support 3b should be installed even in a place where the beam support 3a cannot be installed. Can do.

FIG. 6A shows a state in which the deck plate 51 spanned between the pair of H-shaped steels 58a and 58a is supported by the steel beam 2 and the beam support 3c constituting the intermediate support 1b of the present embodiment. Show. Further, FIG. 6B shows that the steel beam 2 arranged below the deck plate 51 is supported at both ends by square support 59 by beam supports 3c and 3c respectively attached to a pair of H-shaped steels 58b and 58b. It shows the state that was done. Further, FIG. 6C shows a state in which both ends of the steel beam 2 are supported by the beam supports 3d and 3d instead of the beam supports 3c and 3c in FIG. 6B.
6 (a) and 6 (b) correspond to FIGS. 2 (b) and 1 (b) of the first embodiment, respectively, and FIG. 6 (c) shows the beam support 3c in FIG. 6 (b). This corresponds to the drawing in which the beam support 3d is used instead of the above.

7 (a) and 7 (b) are front views of the two types of beam supports 3c and 3d constituting the intermediate support 1b, and FIGS. 7 (c) and 7 (d) are respectively shown in FIG. FIG. 7A is a plan view of the square member receiving member 22 and the beam receiving member 26 shown in FIG. 7A and FIG. 7B, and FIG. 7E is a front view of the column 27 shown in FIG. 7A and FIG. FIG.
In FIGS. 7A and 7B, the H-shaped steel 58 is indicated by a broken line, and in FIGS. 7C and 7D, the outer shape of the support column 27 is indicated by a broken line. 7 (c) and 7 (d) show the beam supports 3c and 3d in the state in which the rubber plate 25a and the upper receiving metal fitting 15 are removed from the column 27 in FIGS. 7 (a) and 7 (b), respectively. Is equivalent to a view from above. Further, the components shown in FIGS. 4 and 5 are denoted by the same reference numerals in FIGS. 6 and 7, and the description thereof is omitted.

  As shown in FIGS. 6 and 7, the beam support 3 c has a male screw portion 27 a on the outer peripheral surface, a support column 27 with an upper receiving bracket 15 attached to the upper end, and a lower receiving bracket 16 attached to the lower end. A cylindrical leg portion 28 that rotatably holds the column 27 inserted from above, a cylindrical support bracket 21 that is rotatably inserted into the column 27, and a square member receiver that is installed on the support bracket 21. A bracket 22 and a reinforcing bracket 23, and an upper nut 29 and a lower nut 30 that are screwed into the male thread portion 27 a of the support column 27 between the support bracket 22 and the leg portion 28 are provided. In addition, the leg part 28 is corresponded to the 2nd cylindrical body in Claim 3 described in the claim.

The upper metal fitting 15 is disposed so as to be orthogonal to the axial direction of the column 27 and is joined to the upper end of the column 27 by welding. Further, a guide groove 27b having a predetermined length from the upper end is provided on the outer peripheral surface of the support column 27 in parallel with the axial direction, and a guide groove 27c having both ends closed from the center to the lower end is provided. (See FIG. 7 (e)).
The lower bracket 16 is disposed so as to be orthogonal to the axial direction of the support column 27 and is welded to the lower end of the leg portion 28 by welding. In addition, a bolt hole (not shown) into which the bolt 32 is screwed and a female screw part to be screwed into the bolt 32 are formed on the lower surface of the lower metal fitting 16 on the inner peripheral surface (not shown). ) Is provided so that the bolt 32 can communicate with the two bolt holes. Then, the bolt 32 is screwed into the bolt hole of the lower bracket 16 so that the lower surface of the lower flange of the H-shaped steel 58b can be pressed by a tip portion projecting into the lower bracket 16.
The leg portion 28 is provided with a screw hole (not shown) on the outer peripheral surface thereof in the radial direction, and a lower guide member 31b screwed into the screw hole is disposed at the tip with respect to the inside of the guide groove 27c of the column 27. It is screwed in as possible. In this case, the guide groove 27c has the effect of restricting the movement direction of the support column 27 together with the lower guide member 31b to the cylindrical axis direction of the leg portion 28 and preventing the rotation of the support column 27 with respect to the leg portion 28. That is, the guide groove 27c and the lower guide member 31b function as anti-rotation means for coupling the support column 27 with respect to the leg portion 28 in a non-rotatable manner around the cylindrical axis while allowing movement in the cylindrical axis direction. have.

  The support fitting 21 is provided with a screw hole (not shown) in the outer peripheral surface in the radial direction. It is screwed in (see FIG. 7C). Thereby, the upper guide member 31a can move only in the longitudinal direction of the guide groove 27b. In this case, the guide groove 27b has an action of limiting the moving direction of the support fitting 21 together with the upper guide member 31a only to the axial direction of the support column 27 and preventing the support fitting 21 from rotating with respect to the support column 27.

One end of the square member bracket 22 is welded to the support bracket 21 so as to be orthogonal to the axial direction of the column 27. Further, the reinforcing metal fitting 23 is made of a plate material having a substantially rectangular shape in plan view, and two end faces sandwiching a right angle are welded to the outer peripheral surface of the support metal fitting 21 and the lower surface of the square metal receiving metal fitting 22, respectively.
The upper nut 29 is installed above the lower nut 30, and a pair of protrusions 29a, 29a and protrusions 30a, 30a are provided on the outer peripheral surfaces of the upper nut 29 and the lower nut 30, respectively, in parallel with the radial direction. It has been.

In the beam support 3c having such a structure, the lower nut 30 is mounted in a state where the support column 27 is disposed above the leg portion 28 so that the axial direction of the support column 27 is parallel to the vertical direction. When rotated, the support column 27 moves in the vertical direction. That is, in the beam support 3c, the entire length is easily changed by a simple operation of rotating the lower nut 30. Therefore, for the plurality of types of H-shaped steels 58b having different distances from the upper flange to the lower flange. Even if it adjusts the whole length according to the distance, it can install without trouble.
Then, after the beam support 3c is installed between the upper and lower flanges of the H-shaped steel 58b, the lower nut 30 is rotated to raise the support column 27, and the upper receiving metal 15 and the lower receiving metal 16 are respectively attached to the upper and lower flanges. When the lower nut 30 is further rotated in the contacted state to raise the support column 27, the upper and lower flanges are pressed by the upper receiving bracket 15 and the lower receiving bracket 16, respectively, so that the beam support 3c is attached to the H-shaped steel 58b. It can be securely fixed against.

Further, in the beam support 3c, when the upper nut 29 is rotated with the protrusion 29a, the support bracket 21 moves in the vertical direction by moving relative to the support column 27 in the axial direction. That is, in the beam support 3c, when the square nut 59 is rotated on the top surface of the flat portion 22a so that the side surface of the square bracket 22 is in contact with the upright portion 22b, the upper nut 29 is rotated. This has the effect that the height of the upper surface of the square member 59 installed on the square member fitting 22 changes.
Thus, in the beam support 3c, since it is easy to adjust the height of the upper surface of the square member 59 installed on the square member bracket 22, in the intermediate support 1b, another H-shaped steel 58b having a different flange thickness is used. Also in the case of using, the work of adjusting the height of the upper surface of the steel beam 2 is performed by installing a spacer on the upper surface of the square member 59 so that the upper surface of the steel beam 2 is in contact with the lower surface of the deck plate 51. There is no need. Therefore, also in the intermediate support 1b, the effect that the installation work of the deck plate 51 can be efficiently performed in a short time as in the intermediate support 1a is exhibited.

As shown in FIGS. 7B and 7D, the beam support 3d has a structure in which a beam support 26 is provided instead of the square member support 22 in the beam support 3c. One end of the beam receiving metal 26 is welded to the support metal 21 so as to be orthogonal to the axial direction of the column 27. Further, the reinforcing metal fitting 23 is made of a plate material having a substantially rectangular shape in plan view, and two end faces sandwiching a right angle are welded to the outer peripheral surface of the support metal fitting 21 and the lower surface of the beam receiving metal fitting 26, respectively. The beam receiving bracket 26 is formed such that the distance between the upright portions 26b and 26b is wider than the width of the long member 7 of the fixing bracket 5, and the end of the steel beam 2 is placed on the upper surface of the flat portion 26a. This is a possible structure (see FIG. 6C). For the steel beam 2 supported by the beam support 3d, the upright portion 7a is not provided on the long member 7 of the fixing bracket 5.
Since the beam support 3d has such a structure, the beam support has a structure in which the end portion of the steel beam 2 is supported via the square member 59 as in the vicinity of the end portions of the H-shaped steels 58a and 58b. It can also be installed in a place where the tool 3c cannot be installed.

Next, the intermediate support used when constructing a concrete slab with respect to the building which uses reinforced concrete as a structural material is demonstrated using FIG. 8 thru | or FIG.
FIGS. 8A to 8C show a state in which the deck plate 51 spanned between the pair of beam molds 60a and 60a is supported by the intermediate support 1c of the present embodiment.
FIG. 9A is an enlarged view of a portion D in FIG. 8B, FIG. 9B is a plan view of the locking fitting 32, and FIG. 9C is an F- in FIG. 9A. It is F line arrow sectional drawing. FIG. 10A is an enlarged view of a portion E in FIG. 8C, and FIG. 10B is a cross-sectional view taken along line GG in FIG.

8 (a) and 8 (b) correspond to FIGS. 2 (b) and 1 (b) of the first embodiment, respectively, and FIG. 8 (c) shows the beam support 3e in FIG. 8 (b). This corresponds to a diagram in which the beam support 3f is used instead of the above. Also, the components shown in FIGS. 4 to 7 are denoted by the same reference numerals in FIGS. 8 to 10, and the description thereof is omitted.
As shown in FIG. 8A, the beam form frame 60 a has a structure in which a thick end member 63 is fixed to a dam plate 61 and a vertical crosspiece 62 using a fastening hardware 64, and is attached to the upper end of the vertical crosspiece 62. The end of the deck plate 51 is placed on the upper surface of the horizontal pier 65 installed horizontally.

  As shown in FIGS. 9 (a) to 9 (c), the beam support 3e has a rectangular shape in plan view and is made of a metal in which an upright portion 34a is formed so that one end is bent downward at a right angle. A long member 34, a rectangular tube-like connector 35 having a lower surface 34b of the long member 34 attached to the upper end, and a rectangular tube extrapolated from below to the connector 35 and provided with a flange 36b at the lower end. A column-shaped support 36, a rectangular tube-shaped support fitting 37 loosely inserted on the outside of the support 36, a square member receiving metal 38 and a reinforcing metal fitting 39 installed on the support metal 37, and a plate material having a trapezoidal shape in plan view. A reinforcing metal fitting 40 in which the other of the end faces is welded to the lower face 34b of the long member 34 so that one of the end faces of the two sides sandwiching the right angle comes into contact with the side face of the column 36. Yes. Further, the elongate member 34 is provided with a nail hole 34c (see FIG. 9B) in the vicinity of the upright portion 34a. The nail hole 34 c is used when the long member 34 placed on the upper surface of the horizontal crosspiece 65 is nailed to the horizontal crosspiece 65.

A pair of pin insertion holes (not shown) are provided on two parallel side surfaces of the connector 35 so that the retaining pins 41 can communicate with each other. A pair of pin insertion holes 36a, 36a are provided so that the retaining pin 41 inserted in the pair of pin insertion holes can be communicated.
A pair of bolt insertion holes (not shown) are connected to the two side surfaces of the column 36 where the pair of pin insertion holes 36a, 36a are provided so that the retaining bolts 42 (see FIG. 9C) can communicate with each other. A pair of bolts is inserted below the pin insertion holes 36a and 36a so that the retaining bolts 42 inserted in the above-described pair of bolt insertion holes of the column 36 can communicate with the upper portion of the support bracket 37. Holes are provided on two parallel sides.

  The square member receiving bracket 38 is erected so as to form an acute angle with respect to one of the two side surfaces 37a of the support bracket 37 where the bolt insertion hole is not provided, and the square member 59 is placed on the upper surface. A flat portion 38a, and an upright portion 38b extending from one end thereof so as to be orthogonal to the flat portion 38a. In addition, a reinforcing plate 39 having a rectangular shape in plan view is provided on the side surface 37a of the support metal 37 and the flat portion 38a of the square member receiving metal 38 at the center in the width direction of the support metal 37 (direction in which the retaining bolt 42 is inserted). They are orthogonal to each other and connected to each other.

  A pair of bolts formed on the inner peripheral surface of the support bracket 37 are formed at the same distance from the upper end thereof with a reinforcing plate 39 sandwiched between them and female screws to be engaged with the tilt adjusting bolts 43 on both sides thereof. A hole (not shown) is provided in parallel with the longitudinal direction of the flat portion 38a. The pair of bolt holes of the support bracket 37 is provided with a pedestal portion 44 so that the contact surface of the tilt adjusting bolt 43 with the head is orthogonal to the flat portion 38 a of the square member receiving bracket 38. That is, the contact surface of the pedestal 44 with respect to the head of the tilt adjusting bolt 43 is in a state orthogonal to the depth direction of the bolt hole of the support bracket 37.

  A bolt hole (not shown) into which the height adjusting bolt 45 is screwed and a female screw portion to be screwed into the height adjusting bolt 45 are formed on the inner peripheral surface of the flat portion 38a of the square metal fitting 38. A pedestal 46 having a bolt hole (not shown) is provided so that the height adjusting bolt 45 can communicate with the two bolt holes. In the bolt hole of the flat portion 38a of the square member receiving metal 38, the lower end of the square member 59 placed on the square member receiving metal member 38 is formed by the tip portion of the height adjusting bolt 45 protruding upward from the flat portion 38a. It is screwed so that it can be pressed. The reinforcing metal fitting 39 is provided with a notch in part so as not to interfere with the height adjusting bolt 45.

In the beam support 3e, as shown in FIG. 9A, when the pair of tilt adjusting bolts 43, 43 are screwed into the bolt holes of the support bracket 37, the support bracket 37 is at a predetermined angle with respect to the column 36. It is fixed so as to be rotatable within the range. The angle formed by the support bracket 37 and the support column 36 changes according to the length of the tilt adjustment bolt 43 protruding from the bolt hole of the support bracket 37.
In the case described above, the support metal member 37 is moved by its own weight so that the front end side (the side connected to the upright part 38b) of the flat member 38a of the square member receiving metal member 38 is moved downward with the retaining bolt 42 as the center. Rotational moment is generated. At this time, the inclination adjusting bolt 43 in a state in which the tip portion is in contact with the support column 36 prevents the rotation of the support bracket 37, and the longitudinal direction of the flat portion 38 a of the square member receiving bracket 38 (the side surface 37 a of the support bracket 37 (The direction from the proximal end joined to the distal end to the distal end) and the horizontal direction is maintained.

Therefore, according to the beam support 3e, by operating the inclination adjusting bolt 43 and adjusting the length of the tip protruding from the bolt hole of the support bracket 37, for example, as shown in FIG. In addition, it is possible to keep the flat portion 38a of the square member bracket 38 in a horizontal state.
Further, in the state shown in FIG. 9A, the tilt adjusting bolt 43 is operated so that the tip portion thereof does not protrude from the bolt hole of the support bracket 37, or the tilt adjusting bolt 43 itself is removed. When extracted from the bolt hole, the support fitting 37 rotates by its own weight in the direction in which the tip side of the flat portion 38a of the square member receiving fitting 38 moves downward around the retaining bolt 42.

That is, in the intermediate support 1c, after the beam support 3e is attached to the beam form frame 60b, the inclination adjusting bolt 43 is rotated to adjust the inclination of the flat portion 38a of the square member receiving bracket 38 with respect to the horizontal direction. Can do.
Therefore, when the intermediate support 1c is used when forming a concrete slab in a building made of reinforced concrete as a structural material, the tilt adjusting bolt 43 is operated at the stage where the concrete slab is formed, and the tip portion thereof is When the length protruding from the bolt hole of the support fitting 37 is shortened, the square piece receiving metal piece 38 rotates in a direction in which the flat portion 38a is separated from the square piece 59, so that the square piece 59 can be removed. When the square member 59 is removed, the steel beam 2 can be easily removed. Furthermore, when the beam form frame 60b is removed, the beam support 3e can be recovered from the concrete slab.
In the intermediate support work 1c, the elongate member 34 is placed on the upper surface of the cross beam 65 so that the upright portion 34a is engaged with the upper side surface of the slat 61, whereby the beam support 3e is mounted on the beam frame. It is easily fixed to 60b.
Thus, in the intermediate support 1c, the work of attaching the beam support 3e to the beam formwork 60b and the operation of recovering the beam support 3e from the concrete slab are easy, so in a building using reinforced concrete as a structural material, Deck plate installation work and removal work can be performed efficiently in a short time.

As shown in FIG. 10A, the beam support 3f has a structure in which a beam support 47 is provided instead of the square member support 38 in the beam support 3e. The beam receiving bracket 47 is erected so as to form an acute angle with respect to the side surface 37a of the support bracket 37, and a flat portion 47a on which the end of the steel beam 2 is placed on the upper surface, and the flat portion. 47a is formed of a pair of upright portions 47b and 47b extending upward from both ends in the width direction (direction in which the retaining bolt 42 is inserted), and the both ends of the flat plate material are bent at a right angle. I am doing. Further, the beam receiving bracket 47 is formed such that the interval between the upright portions 47b and 47b is wider than the width of the long member 7 of the fixing bracket 5, and the end portion of the steel beam 2 is placed on the upper surface of the flat portion 47a. This is a possible structure (see FIG. 8C).
For the steel beam 2 supported by the beam support 3f, the upright portion 7a is not provided on the long member 7 of the fixing bracket 5.
Since the beam support 3f has such a structure, the beam having a structure for supporting the end portion of the steel beam 2 via the square member 59 as in the vicinity of the end portions of the beam form frames 60a and 60b. It can also be installed in a place where the support 3e cannot be installed.

  INDUSTRIAL APPLICABILITY The present invention is applicable when a concrete slab is constructed on a floor, a ceiling, or the like in a multi-layered building using reinforced concrete or steel reinforced concrete as a structural material.

1a Intermediate support 1b Intermediate support 1c Intermediate support 2 Steel beam 3a Beam support 3b Beam support
3c Beam support 3d Beam support 3e Beam support 3f Beam support 4 Square pipe 4a Lower surface 5 Fixing bracket 6 Reinforcing member 7 Long member 7a Upright portion 7b Lower surface 7c Nail hole 8 Bolt 9 Base 10 Reinforcing plate 11 Standing plate 12 connecting plate 13 long plate 14 upper cylindrical body 14a male screw portion 14b female screw portion
DESCRIPTION OF SYMBOLS 15 Upper receiving metal fitting 16 Lower receiving metal fitting 17 Lower cylindrical body 18 Worm 19 Support | pillar 19a Male thread part 20 Connection member 20a Cylindrical body 20b Cylindrical body 20c Cylindrical body 21 Support metal fitting 22 Square material receiving metal fitting 22a Flat part 22b Upright part 23 Reinforcement Metal fittings
24 Nut 24a Protruding portion 25a Rubber plate 25b Rubber plate 26 Beam receiving bracket 26a Flat portion 26b Upright portion 27 Post 27a Male thread portion 27b Guide groove 27c Guide groove 28 Leg portion 29 Upper nut 29a Protruding portion 30 Lower nut 30a Protruding portion 31a Upper portion Guide member 31b Lower guide member 32 Bolt 33 Base 34 Long member 34a Upright part 34b Lower surface 34c Nail hole 35 Connector 36 Post 36a Pin insertion hole 36b Flange 37 Support metal fitting 37a Side surface 38 Square member receiving metal 38a Flat part 38b Upright part 39 Reinforcement Metal fittings 40 Reinforcing metal fittings 41 Retaining pins 42 Retaining bolts 43 Tilt adjusting bolts 44 Pedestal parts 45 Height adjusting bolts 46 Pedestal parts 47 Beam receiving metal parts 47a Flat parts 47b Upright parts 51 Deck plates 52 Formwork members 53 Formwork parts
54 flat plate 55 flat plate
54a upper surface 55a upper surface
54b bottom surface 55b bottom surface
56 square pipe 57 square pipe
56a Open end 57a Open end
56b Flat end 56c Upper surface 57b Upper surface
58a H-shaped steel 58b H-shaped steel 59 Square bar
60a Beam formwork 60b Beam formwork 61 Barrel 62 Vertical crosspiece 63 End timber 64 Fastening hardware 65 Horizontal crosspiece

Claims (7)

An intermediate support used to form a concrete slab in a building made of steel frame,
Between the pair of first H-shaped steels (58a, 58a) installed so as to be parallel to each other, the upper surface is opposed to the lower surface of the deck plate (51) spanned so as to be orthogonal to the longitudinal direction thereof. A steel beam (2) installed in parallel with the pair of first H-shaped steels (58a, 58a) in contact with each other;
In a state of being attached to a pair of second H-shaped steels (58b, 58b) that are respectively installed in the vicinity of both ends of the pair of first H-shaped steels (58a, 58a) so as to be orthogonal to the longitudinal direction thereof. A pair of beam supports for supporting both ends of the steel beam (2),
The beam support has a square member receiving bracket (22) on which a square member (59) is placed, and is formed so as to be able to support the end of the steel beam (2) via the square member (59). An intermediate support that is characterized by The beam support is
A first cylindrical body (14) in which a first male thread portion (14a) and a female thread portion (14b) are provided on the outer peripheral surface and the inner peripheral surface, respectively, and a first metal fitting (15) is attached to one end. When,
A second cylindrical body having a second catch (16) attached to one end;
A second male screw portion (19a) that is screwed into the female screw portion (14b) is provided on the outer peripheral surface, and one end is screwed into the first cylindrical body (14), and the other end is the second threaded portion. A first support column (19) that is restricted by the cylindrical body from moving in the direction of the cylindrical axis of the first cylindrical body (14) and is rotatably held around the cylindrical axis;
A worm (18) installed on the upper surface of the second receiving metal fitting (16) so as to be screwed into an inclined tooth provided on the other end of the first support column (19);
First anti-rotation means for coupling the first cylindrical body (14) to the second cylindrical body in a non-rotatable manner around the cylindrical shaft while allowing movement in the cylindrical axial direction; ,
A cylindrical support fitting (21) rotatably inserted in the first cylindrical body (14);
The square metal bracket (22) installed on the support bracket (21);
A first nut installed between the second cylindrical body and the support fitting (21) in a state of being screwed into the first male thread portion (14a) of the first cylindrical body (14); , And
The square bar bracket (22)
A flat portion (22a) having a substantially rectangular shape in plan view and having one end joined to the support fitting (21) so as to be orthogonal to the cylindrical axis direction of the first cylindrical body (14);
A first upright portion (22b) extending from the other end of the flat portion (22a) toward the first receiving bracket (15) in parallel with the cylindrical axis direction of the first cylindrical body (14). )
The said flat part (22a) is formed so that the said square | vertical material (59) can be arrange | positioned between the said 1st upright part (22b) and the said support metal fitting (21). Intermediate support work. The beam support is
Instead of comprising the first cylindrical body (14), the worm (18), the first strut (19) and the first detent means,
A second support column (27) provided with a second male screw portion (27a) on the outer peripheral surface and the first support fitting (15) attached to one end;
A second nut (30) screwed into the second male thread portion (27a) of the second support post (27);
Second anti-rotation means for connecting the second support column (27) to the second cylindrical body in a non-rotatable manner around the cylindrical axis while allowing movement in the direction of the cylindrical axis; With
The support metal fitting (21) is rotatably extrapolated to the second column (27) instead of the first cylindrical body (14),
The first nut is screwed into the second male threaded portion (27a) of the second column (27) instead of the first cylindrical body (14). And the support bracket (21),
The second nut (30) is engaged with the second cylindrical body (27) and the first nut in a state where the second nut (30) is screwed into the second male screw portion (27a) of the second support post (27). The intermediate support construction according to claim 2, wherein the intermediate support is installed between the two. An intermediate support used when forming concrete slabs in buildings with reinforced concrete as a structural material,
An upper surface with respect to the lower surface of the deck plate (51) spanned between the pair of first beam molds (60a, 60a) arranged so as to be parallel to each other so as to be orthogonal to the longitudinal direction thereof. A steel beam (2) installed in parallel with the pair of first beam molds (60a, 60a) in a state in which
A state in which the pair of first beam molds (60a, 60a) are attached to a pair of second beam molds (60b, 60b) that are respectively installed near both ends of the pair of first beam molds (60a, 60a) so as to be orthogonal to the longitudinal direction thereof. A pair of beam supports that respectively support both ends of the steel beam (2),
The beam support has a square member receiving member (38) on which a square member (59) is placed, and is formed so as to be able to support the end of the steel beam (2) via the square member (59). An intermediate support that is characterized by The beam support is
A long member (34) having a rectangular shape in plan view and having an upright portion (34a) formed so that one end is bent at a right angle downward;
A prismatic column (36) having an upper end connected to the lower surface (34b) of the elongated member (34);
A square tube-shaped support fitting (37) whose upper end is rotatably connected to the support post (36) while being loosely inserted outside the support post (36);
A square bar bracket (38) installed on the support bracket (37);
In the support metal fitting (37), a first bolt hole provided on one of two side surfaces parallel to the rotation axis is screwed into the support metal fitting (37) so that a tip portion can protrude. A tilt adjusting bolt (43),
The square bar bracket (38) is
A flat portion (38a) having one end joined so as to form an acute angle with respect to the side surface of the support fitting (37) having a substantially rectangular shape in plan view and provided with the first bolt hole;
A first upright portion (38b) extending upward from the other end so as to be orthogonal to the flat portion (38a),
The said flat part (38a) is formed so that the said square | vertical material (59) can be arrange | positioned between the said 1st upright part (38b) and the said support metal fitting (37). Intermediate support work. The beam support is
Instead of providing the first upright portion in the square bar bracket, a pair of second upright portions extending upward from two end edges of the flat portion that are parallel to each other are provided. The intermediate support work according to any one of claims 1 to 5, wherein the intermediate support work is provided. The steel beam (2) is
From a steel long member (7) and a steel reinforcing member (6) provided on the first surface (7b) at a desired interval from one end in the longitudinal direction of the long member (7). A pair of fixing brackets (5),
A steel square pipe (4) having a second bolt hole formed in the lower surface (4a);
A bolt (8) screwed into the second bolt hole so that the tip can protrude into the square pipe (4);
The reinforcing member (6) is formed so that at least a part of the reinforcing member (6) can be inserted together with the long member (7) from the other end in the longitudinal direction of the long member (7) into the square pipe (4). The intermediate support according to any one of claims 1 to 6, wherein the intermediate support is provided.

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