JP2019027232A - Reinforcing hardware, fixed hardware, and installation object support body reinforcing structure of building structure - Google Patents

Abstract

To provide a bolt reinforcing member which can be easily attached to a hanger bolt for hanging an installation object.SOLUTION: A reinforcing hardware 20 comprises first and second elongated plate portions 21a and 21b extending in the axial direction of a hanger bolt 5. It also comprises a reinforcing steel member 21 joined together such that the first and second plate portions 21a and 21b are in contact with the hanger bolt 5, and a shaft member 25 provided on the upper end 21t of the reinforcing steel member 21 and fixed to the first and second plate portions 21a and 21b so as to sandwich the hanger bolt 5 between the first and second plate portions 21a and 21b. Further, the fixing hardware used together with the reinforcing hardware 20 is for fixing the rod-like member to the fixed body, and has an opening and a female threaded hole provided so as to face the opening, the fixed body is provided so as to be positioned within the opening, and the male threaded portion formed at the end portion of the rod-like member is screwed and tightened from the outside of the opening in the female screw hole toward the fixed member so that the fixed member is pressed against the edge portion of the opening and fixed.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an installation object support reinforcement structure for a reinforcement hardware, a fixed hardware, and a building structure.

  Various installations in the building structure such as pipes, ducts, lighting fixtures and ceiling cassette type air conditioners are installed behind the ceiling of the building structure. Such a building structure installation is suspended by suspension bolts provided on the lower surface of the ceiling slab.

  Thus, in order to improve the earthquake resistance of the existing building structure installation suspended by the suspension bolt, it is conceivable to attach a reinforcing material along the suspension bolt. In order to attach the reinforcing material, it is necessary to fix the reinforcing material to the suspension bolt using a fixing bracket or the like.

  Moreover, in order to improve the earthquake resistance of the existing building structure installation suspended by the suspension bolt, it is also conceivable to provide a brace material between the suspension bolts adjacent to each other. For example, Patent Document 1 discloses a brace coupling bracket in which an L-shaped bracket for attaching an end portion of a brace is provided on a fixing bracket fixed to an outer peripheral side surface of the suspension bolt in order to connect a brace material to the suspension bolt. ing. The brace coupling bracket is fixed to the suspension bolt by fastening a fixing bracket that is U-shaped and sandwiches the outer peripheral surface of the suspension bolt with the bolt.

  By the way, in a building structure such as a building, there is a case where a vertical space of a ceiling back space between a ceiling and a beam or a slab formed above the ceiling is large. In such a case, a temporary scaffold is built under the ceiling, and an operator puts a hand or a part of the body into the space behind the ceiling from the inspection port formed on the ceiling. May not arrive. As a result, it may be difficult to attach a suspension bolt reinforcing member such as a reinforcing material or a brace material.

JP 2014-125812 A

  An object of the present invention is to provide a reinforcement support structure for a reinforcement hardware, a fixed hardware, and a building structure capable of easily attaching a suspension bolt reinforcement member to a suspension bolt that suspends an installation object. It is to be.

The present invention employs the following means in order to solve the above problems.
That is, the reinforcing hardware according to the present invention includes a plurality of suspension bolts provided in a housing of a building structure, and reinforces the suspension bolt for an installation support body that suspends and supports an installation in a building structure. A reinforcing metal piece that extends in the axial direction of the suspension bolt and has a steel material in which long first and second plate portions formed so as to be in contact with the suspension bolt are joined to each other; and A shaft member provided at an upper end and fixed to the first and second plate portions so as to sandwich the suspension bolt between the first and second plate portions.
According to such a configuration, the suspension bolt can be reinforced by placing the first and second plate portions of the reinforcing steel material along the suspension bolt. When the reinforcing steel material is installed along the suspension bolt, the first and second plates are brought into contact with the suspension bolt at a position lower than the upper end of the suspension bolt at the upper end of the steel material, and then the first and second plates. A shaft member is fixed to the portion, and a suspension bolt is sandwiched between the first and second plate portions and the shaft member. Thus, the upper end of the steel material is locked so as not to be separated from the suspension bolt. In this state, when the steel material is moved upward, the upper end of the steel material rises along the suspension bolt with the suspension bolt sandwiched between the first and second plate portions and the shaft member. Accordingly, the upper end of the steel material locked to the suspension bolt at a position below the upper end of the suspension bolt can be slid to the upper end of the suspension bolt. When the upper end of the steel material reaches the upper end of the suspension bolt, the first and second plate portions are fixed along the suspension bolt with the entire steel material. In this way, it is possible to easily perform the work of attaching the steel material even if the operator's hand does not reach the upper end of the suspension bolt.

In one aspect of the present invention, the steel material of the reinforcing hardware of the present invention is formed with a missing portion that is missing over a certain length along the axial direction of the suspension bolt at the upper end.
According to such a configuration, when the steel material is inclined in a direction in which the lower end side of the steel material is separated from the suspension bolt with the suspension bolt sandwiched between the first and second plate portions and the shaft member at the upper end of the steel material. The suspension bolt enters the missing portion at the upper end of the steel material. That is, the steel material can be inclined in a direction in which the lower end is separated from the suspension bolt with respect to the upper end while avoiding interference with the suspension bolt at the upper end of the steel material. Thereby, even if it is in the state which inclined the steel material, it can be slid upwards, with the upper end of steel material latched to the suspension bolt, and the installation work of steel materials can be performed easily.

The fixed hardware of the present invention is a fixed hardware for fixing a rod-shaped member to a fixed body, and includes an opening and a female screw hole provided so as to face the opening, and the fixed body is positioned in the opening. The fixed portion is formed by fastening a male screw portion formed at an end portion of the rod-shaped member into the female screw hole from the outside of the opening toward the fixed body. The body is fixed by being pressed against the edge of the opening.
According to such a configuration, in order to fix the fixed hardware to the fixed body, after the fixed body is positioned in the opening formed in the fixed hardware, the male screw portion formed at the end of the rod-shaped member Are screwed into the female screw hole and screwed toward the fixed body from the outside of the opening. Then, the end of the rod-shaped member hits the fixed body located in the opening and presses the fixed body toward the edge of the opening. As a result, the fixed body is pressed by the end of the rod-shaped member in a state where the fixed body is in contact with the edge of the opening, and the fixed body is pressed and fixed to the edge of the opening. In this way, the fixed hardware is firmly fixed to the fixed body only by performing the operation of positioning the fixed body within the opening and the operation of screwing the male screw portion of the rod-shaped member into the female screw hole. It becomes possible to do.

In one aspect of the present invention, in the fixed hardware according to the present invention, the fixed body includes a shaft portion and a diameter-expanded portion provided at a tip of the shaft portion, and the opening has an area larger than that of the diameter-expanded portion. The first opening having a larger diameter and the second opening having a smaller area than the enlarged diameter portion are provided in communication with each other, and the female screw hole is provided on the first opening side.
According to such a configuration, when the fixed body is positioned within the opening, the fixed body is inserted into the first opening and positioned within the first opening. After that, when the male screw portion at the end of the rod-shaped member is screwed into the female screw hole and the fixed body is pressed by the end of the rod-shaped member, the shaft portion of the fixed member is changed from the first opening to the second opening. Moving. Then, since the area of the second opening is smaller than the diameter-enlarged portion of the fixed body, the diameter-expanded portion can restrain the fixed body from coming out of the second opening. Accordingly, the fixed hardware can be firmly fixed to the fixed body while the fixed hardware is prevented from coming off from the fixed body.

The installation object support reinforcement structure of a building structure according to the present invention is characterized by including the above-described reinforcement hardware.
According to such a configuration, the steel material can be slid to the upper end of the suspension bolt after the upper end of the steel material is locked to the suspension bolt at a position below the upper end of the suspension bolt. Thereby, even if the suspension bolt is long in the vertical direction, the steel material as the suspension bolt reinforcing member can be easily attached to the suspension bolt.

In one aspect of the present invention, the installation structure support reinforcing structure for a building structure according to the present invention further includes a fixed hardware as described above, and a fixed body is provided on the upper end side of the steel material. The rod-shaped member is fixed to the fixed body via the fixed hardware, and the end of the rod-shaped member opposite to the end fixed to the fixed body is the suspension bolt to which the steel material is fixed. Are fixed to other different suspension bolts.
According to such a structure, a rod-shaped member can be easily attached with respect to the to-be-fixed body provided in the upper end side of steel materials. Further, in the rod-shaped member, the rod-shaped member is obliquely installed between the two suspension bolts by fixing the end portion opposite to the end portion fixed to the fixed body to the other suspension bolt. And can function as a brace material as a suspension bolt reinforcing member.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to attach attachment bolt reinforcement members, such as a reinforcement hardware and a brace material, easily with respect to the suspension bolt which suspends the installation thing in a building structure.

It is a side view of the installation object support body reinforcement structure of the building structure shown as embodiment of this invention. It is a figure which shows the external appearance of the reinforced steel material which comprises the installation object support body reinforcement structure of FIG. FIG. 3 is a left side view of FIG. 2. It is an AA arrow line view of Drawing 1 showing a shaft member provided in the upper end of a reinforced steel material. It is a BB arrow line view of Drawing 1 showing the fixture arranged near the lower end part of a suspension bolt and a reinforcing steel material. It is a perspective view which shows the outer side member of the fixing tool which pinches | interposes a hanging bolt. It is a front view which shows the attachment structure of the upper end part of the brace material with respect to a reinforced steel material. It is CC arrow line view of FIG. It is a figure which shows the structure of an upper fixed metal fitting. It is a figure which shows the attachment structure of the lower end part of the brace material with respect to a reinforced steel material. It is a figure which shows the state which latched the upper end of the reinforcement steel material to the lower end part of the suspension bolt. It is a perspective view which shows the state which inclined the reinforcement steel material by inserting a suspension bolt in the missing part provided in the upper end of the reinforcement steel material. It is a figure which shows the state which pushes up the reinforcing steel material, with the upper end of a reinforcing steel material latching to the lower end part of a suspension bolt. It is a figure which shows the state which inserted the fixing pin in opening, in order to attach an upper fixed metal fitting. It is a figure which shows the state following FIG. 14, and the state which made the upper fixed metal object slide.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment for carrying out an installation object support reinforcing structure for a reinforcing hardware, a fixed hardware, and a building structure according to the present invention will be described based on the drawings.

The side view of the installation support reinforcement structure 1 of the building structure shown as embodiment of this invention is shown in FIG.
As shown in FIG. 1, a ceiling 4 is suspended from a lower surface of a ceiling slab (frame) 2 of a building structure by a hanging bracket (not shown). In the space between the ceiling slab 2 and the ceiling 4, an installation object 8 in the building structure and an installation object support body for supporting the installation object 8 are installed.
The installed object support is a structure that suspends and supports various installed objects 8 such as pipes, ducts, lighting fixtures, and ceiling cassette type air conditioners. In the present embodiment, the installation object support body includes the suspension bolt 5 and the support steel material 6, and the installation object 8 in the building structure is installed between the lower ends of the plurality of suspension bolts 5 suspended from the ceiling slab 2. It is installed on the support steel material 6 made. The support steel material 6 is, for example, L-shaped steel, and the lower end portion of the suspension bolt 5 is inserted into a hole (not shown) formed on one plate surface, and the nut 7 is screwed to the lower end portion of the suspension bolt 5. It is fixed to the suspension bolt 5.

  The reinforcing structure 1 shown as an embodiment of the present invention includes a reinforcing hardware 20 and a brace material 30, and the installed object support is reinforced by these. In this embodiment, the reinforcement structure 1 reinforces the installation object support body which supports the installation object 8 in the building structure provided in the building structure already constructed and operated.

The reinforcing hardware 20 includes a reinforcing steel material (steel material) 21, a shaft member 25, and a fixture 10.
A diagram showing the appearance of the reinforced steel is shown in FIG. A left side view of FIG. 2 is shown in FIG.
The reinforcing steel material 21 is disposed along the suspension bolt 5 of the installation object support. As the reinforcing steel material 21, for example, L-shaped steel is used. That is, as shown in FIGS. 2 and 3, the reinforcing steel material 21 includes a first plate portion 21a and a second plate portion 21b having the same length, and the first and second plate portions 21a and 21b are mutually connected. It is vertically joined on the side and formed in an L-shaped cross section. The reinforcing steel material 21 is disposed so that the suspension bolt 5 is in contact with the first plate portion 21a and the second plate portion 21b on both sides of the joint portion 21j between the first plate portion 21a and the second plate portion 21b. . The first and second plate portions 21 a and 21 b extend in the axial direction of the suspension bolt 5, and are formed so as to extend along substantially the entire length from the vicinity of the upper end of the suspension bolt 5 to the vicinity of the lower end thereof.

The reinforcing steel material 21 has a missing portion 22 that is missing over a certain length along the axial direction of the suspension bolt 5 at the upper end 21t. The missing portion 22 is formed at the joint portion 21j between the first plate portion 21a and the second plate portion 21b, and is formed with a width that is slightly larger than the diameter of the suspension bolt 5.
A shaft insertion hole 23 is formed in each of the first and second plate portions 21 a and 21 b at the upper end 21 t of the reinforcing steel material 21. The shaft insertion holes 23 are formed at intervals on both sides in the direction orthogonal to the longitudinal direction of the reinforcing steel material 21 with respect to the missing portion 22 formed in the joint portion 21j. Further, the shaft insertion hole 23 is formed as a long hole having a certain length in a direction orthogonal to the longitudinal direction of the reinforcing steel material 21.
Further, through holes 24 are formed in the reinforcing steel material 21 at predetermined intervals along the longitudinal direction of the reinforcing steel material 21 in the first and second plate portions 21a and 21b.

  As shown in FIG. 1, the shaft member 25 is provided at the upper end 21t of such a reinforcing steel material 21, and the fixture 10 is provided at the lower end 21u.

FIG. 4 shows an AA arrow view of FIG. 1 showing a shaft member provided at the upper end of the reinforcing steel material.
As shown in FIG. 4, the shaft member 25 includes a shaft main body 26 made of bolts, a pair of collars 27 and 28, and double nuts 29 and 29 screwed to the shaft main body 26.
The shaft body 26 is inserted into a shaft insertion hole 23 formed in the first and second plate portions 21 a and 21 b at the upper end 21 t of the reinforcing steel material 21. In this state, the shaft body 26 is disposed obliquely with respect to the first and second plate portions 21a and 21b, and the suspension bolt 5 is sandwiched between the joint portion 21j and the shaft body 26.
The collars 27 and 28 are cylindrical and have holes 27h and 28h through which the shaft body 26 made of bolts is inserted. The collars 27, 28 are formed so that one end surfaces 27a, 28a thereof are perpendicular to the central axes of the holes 27h, 28h, and the other end surfaces 27b, 28b are formed along the first and second plate portions 21a, 21b. It is formed to be inclined with respect to the central axis of 28h.
The collar 27 is sandwiched between a bolt head portion 26h formed at one end of a shaft body 26 made of bolts and the second plate portion 21b. The collar 28 is sandwiched between the first plate portion 21 a and double nuts 29 and 29 screwed into a thread groove formed in the shaft body 26.

The BB arrow line view of FIG. 1 which shows the fixing tool 10 arrange | positioned in the lower end part vicinity of a suspension bolt and a reinforced steel material is shown in FIG. Moreover, the perspective view which shows the outer member of the fixing tool which pinches | interposes a hanging bolt is shown in FIG.
As shown in FIG. 5, the fixture 10 is disposed in the vicinity of the lower end portion of the reinforcing steel material 21, and integrally fixes the suspension bolt 5 and the lower end portion of the reinforcing steel material 21. The fixture 10 includes an outer member 15 and an inner member 16.

The outer member 15 includes plate portions 15a and 15b having the same length, and is a member having a substantially L-shaped cross section in which the plate portions 15a and 15b are joined vertically via the curved portion 15d. Here, the bending portion 15d is formed to be bent so that the suspension bolt 5 can be stored inside thereof. Further, as shown in FIG. 6, the bending portion 15 d is directed to the inside in the bending direction at a plurality of positions spaced apart in the vertical direction so as to engage with the thread grooves formed on the outer peripheral surface of the suspension bolt 5. Engaging protrusions 15t are formed. The outer member 15 is disposed at the lower end 21u of the reinforcing steel material 21 along the inner side surfaces in the bending direction of the first and second plate portions 21a and 21b. In this state, the engagement protrusion 15t formed on the curved portion 15d is engaged with the thread groove of the suspension bolt 5.
Holes 13 are formed in the plate portions 15a and 15b, respectively. The hole 13 is a through-hole formed in the first and second plate portions 21a and 21b when the outer member 15 is arranged along the inner side surfaces of the first and second plate portions 21a and 21b of the reinforcing steel material 21 in the bending direction. It is formed so as to communicate with the hole 24.

The inner member 16 includes plate portions 16a and 16b, and is a member having a substantially L-shaped cross section in which the plate portions 16a and 16b are vertically joined to each other via a curved portion 16d. Here, the curved portion 16 d of the inner member 16 is formed such that the connecting portion between the plate portion 16 a and the plate portion 16 b is recessed inward in the bending direction of the inner member 16. The curved portion 16d has a cross-sectional dimension that allows the suspension bolt 5 to be stored inside the recess. The inner member 16 is disposed so that the inner side surfaces of the plate portions 15a and 15b of the outer member 15 are in contact with the outer side surfaces of the plate portions 16a and 16b. Thereby, the outer member 15 and the inner member 16 are provided so as to face each other with the suspension bolt 5 interposed therebetween. Further, return portions 16e and 16f that are bent in a direction away from the outer member 15 are formed at the front end portions of the plate portion 16a and the plate portion 16b.
Further, similarly to the outer member 15, the bending portion 16 d of the inner member 16 has a bending direction at a plurality of positions spaced apart in the vertical direction so as to engage with the thread grooves formed on the outer peripheral surface of the suspension bolt 5. Engagement protrusions 16t (see FIG. 5) projecting inward are formed.
Female screw holes 14 are formed in the plate portions 16a and 16b, respectively. These female screw holes 14 are formed so as to communicate with the holes 13 of the outer member 15 when the outer member 15 and the inner member 16 are opposed to each other with the suspension bolt 5 interposed therebetween.

The outer member 15 and the inner member 16 are connected and fixed to the lower end 21 u of the reinforcing steel material 21 by the bolts 17 with the suspension bolt 5 sandwiched therebetween. The bolt 17 is inserted into the through hole 24 of the reinforcing steel material 21 and the hole 13 of the outer member 15 and is screwed into the female screw hole 14 of the inner member 16. Further, the engagement protrusions 15t and 16t formed on the curved portions 15d and 16d of the outer member 15 and the inner member 16 are engaged with the thread grooves 5n of the suspension bolt 5, so that the outer member 15 and the outer member The inner member 16 and the reinforcing steel material 21 fixed to 15 are restrained in the axial direction of the suspension bolt 5.
In this way, the reinforcing steel material 21 is restrained so that the upper end 21t does not move in the radial direction of the suspension bolt 5 with respect to the suspension bolt 5 by the shaft member 25, and the lower end 21u is It is fixed in the radial direction.

As shown in FIG. 1, the brace member 30 is installed obliquely between the reinforcing steel members 21 provided on the suspension bolts 5 adjacent to each other. Specifically, the brace material 30 has an upper end connected to the upper end 21 t of one reinforcing steel material 21 and a lower end connected to the lower end 21 u of the reinforcing steel material 21 provided on the other suspension bolt 5. The brace material 30 includes a brace rod (bar-shaped member) 31, an upper fixed metal (fixed metal) 32, and a lower fixed metal 35.
The brace rod 31 is made of a steel rod, and has male screw portions 31n (see FIG. 7) at least at both ends thereof. The brace rod 31 may have a male screw portion 31n formed over its entire length.

The front view which shows the attachment structure of the upper end part of the brace material with respect to a reinforced steel material is shown in FIG. A CC arrow view of FIG. 7 is shown in FIG. The structure of the upper fixed hardware is shown in FIG.
As shown in FIG. 7, a fixing pin (fixed body) 50 is provided on the upper end 21 t of each reinforcing steel material 21 in order to connect the upper end portion of the brace material 30. As shown in FIG. 8, the fixing pin 50 has a bolt 51, a first nut 52, and a second nut (expansion portion) 53.
The bolt 51 integrally includes a shaft portion 51b having a thread groove formed on the outer peripheral surface and a head portion 51a provided at the tip of the shaft portion 51b and having a larger outer diameter than the shaft portion 51b. The bolt 51 is inserted into the through hole 24 formed in the first and second plate portions 21a and 21b of the reinforcing steel material 21 from the inside in the bending direction of the first and second plate portions 21a and 21b. The first nut 52 is screwed to the shaft portion 51b of the bolt 51 protruding from the through hole 24 to the outside in the bending direction of the first and second plate portions 21a and 21b, and the head 51a of the bolt 51 and the first nut 52 are The bolt 51 is fixed by sandwiching the first and second plate portions 21a and 21b.
The second nut 53 is screwed to the shaft portion 51 b of the bolt 51 at a position spaced apart from the first nut 52. A locking nut is used as the second nut 53 and is fixed to a predetermined position of the shaft portion 51 b of the bolt 51. The interval between the first nut 52 and the second nut 53 is formed so as to be larger than the plate thickness of the upper fixed hardware 32 described later. A double nut can be used as the second nut 53 instead of the locking nut.

The upper fixed hardware 32 fixes the upper end portion of the brace rod 31 of the brace material 30 to the fixing pin 50. As shown in FIGS. 9A and 9B, the upper fixed hardware 32 has a plate shape and includes an opening 33 and a nut member 34.
The opening 33 is formed so as to penetrate the upper fixed hardware 32 in the plate thickness direction. The opening 33 is formed by connecting a first opening 33a and a second opening 33b to each other. The first opening 33 a has an inner diameter larger than the outer diameter of the second nut 53 of the fixing pin 50, and has a larger area than the second nut 53. The second opening 33 b is smaller than the outer diameter of the second nut 53, has an inner diameter larger than that of the shaft portion 51 b, and has a smaller area than the second nut 53.
The nut member 34 is integrally joined to one surface side of the plate-like upper fixed hardware 32 by welding or the like. The nut member 34 has a female screw hole 34 n extending in parallel along the surface 32 f of the upper fixed hardware 32. The female screw hole 34n is formed so as to face the opening 33, and its central axis C extends in a direction connecting the center c1 of the first opening 33a and the center c2 of the second opening 33b.

  As shown in FIG. 7, the upper fixed hardware 32 is connected to the brace rod 31 by a male screw portion 31 n formed at one end of the brace rod 31 being screwed into the female screw hole 34 n of the nut member 34. Further, the upper fixed hardware 32 is locked to a fixing pin 50 provided on the upper end 21 t of the reinforcing steel material 21. Specifically, the upper fixed hardware 32 is sandwiched between the first nut 52 and the second nut 53 with the shaft portion 51 b of the fixing pin 50 inserted into the second opening 33 b of the opening 33. Further, one end of the brace rod 31 screwed into the female screw hole 34n of the nut member 34 protrudes toward the opening 33, hits the second nut 53, and the fixing pin 50 is separated from the first opening 33a in the second opening 33b. The edge 33e (see FIG. 9) on the side to be pressed is pressed. In such an upper fixing hardware 32, the fixing pin 50 is provided so as to be positioned in the opening 33, and the male screw portion 31n formed at the end portion of the brace rod 31 of the brace material 30 has the female screw hole 34n. The fixing pin 50 is pressed and fixed to the edge 33e of the opening 33 by being screwed and tightened from the outside of the opening 33 toward the fixing pin 50.

The attachment structure of the lower end part of the brace material with respect to the reinforcing steel material is shown in FIG.
As shown in FIG. 10, the lower fixed hardware 35 connects the lower end portion of the brace rod 31 to the lower end 21 u of the reinforcing steel material 21. The lower fixed metal 35 is L-shaped in cross section and extends in the vicinity of the lower end 5b of the suspension bolt 5 along the first plate portion 21a or the second plate portion 21b of the reinforcing steel material 21 and at one end of the flat plate portion 35a. And an orthogonal plate portion 35b positioned orthogonal to the flat plate portion 35a. A hole 36 communicating with the through hole 24 formed in the first plate portion 21a or the second plate portion 21b of the reinforcing steel material 21 is formed in the flat plate portion 35a. A through hole 35h through which the lower end of the brace rod 31 is inserted is formed in the orthogonal plate part 35b.

  Such a lower fixed metal 35 is arranged so that the hole 36 communicates with the through hole 24 with the flat plate portion 35 a along the first plate portion 21 a or the second plate portion 21 b of the reinforcing steel material 21. The bolts 38 are inserted into the holes 36 and the through holes 24, and the nuts 39 are fastened to the bolts 38, so that the lower fixed hardware 35 is connected to the reinforcing steel material 21. Further, the lower fixed metal 35 has the brace rod 31 inserted through the through hole 35h of the orthogonal plate portion 35b, and the nuts 37 and 40 are fastened to the male screw portion 31n at the lower end portion of the brace rod 31 from both sides of the orthogonal plate portion 35b. Thus, the brace rod 31 is connected to the lower end portion.

Next, a method for attaching the reinforcing hardware 20 and the brace material 30 to the suspension bolt 5 of the installation object support will be described.
First, the suspension length of the suspension bolt 5 that supports the installation object 8 in the building structure is measured. Next, based on the weight of the installed object 8 in the building structure and the object support that supports it, the compressive load and bending load for the assumed seismic force are calculated, and the steel cross section that can withstand this compressive load and bending load is calculated. Calculate. Further, a steel material that satisfies the calculated cross-sectional specification is selected as the reinforcing steel material 21.
In the selected reinforcing steel material 21, a missing portion 22, a shaft insertion hole 23, and a through hole 24 are formed in advance in a factory or the like. Further, the reinforcing steel material 21 is prepared longer than the suspension length of the suspension bolt 5.

At the construction site, the reinforcing steel material 21 is cut according to the measured suspension length on the side opposite to the upper end 21t side where the missing portion 22 is formed.
Furthermore, the fixing pin 50 is attached to the upper end 21t of the reinforcing steel material 21 after being cut into a suspended length.

Next, as shown in FIG. 11, the upper end 21 t of the reinforcing steel material 21 is placed along a position below the upper end 5 t of the suspension bolt 5, for example, in the vicinity of the lower end 5 b of the suspension bolt 5. Specifically, at the upper end 21t of the reinforcing steel material 21, the suspension bolt 5 is housed inside the first and second plate portions 21a and 21b. Next, the shaft body 26 of the shaft member 25 is inserted into the shaft insertion hole 23 formed in the first and second plate portions 21 a and 21 b at the upper end 21 t of the reinforcing steel material 21. At this time, prior to the insertion of the shaft body 26 into the shaft insertion hole 23, the collar 27 is attached to the shaft body 26. After the shaft body 26 is inserted, the collar 27 is attached to the bolt head portion 26h and the second plate portion 21b. Intervene between. The collar 28 is passed through the tip of the shaft body 26 protruding from the shaft insertion hole 23 of the first plate portion 21a, and double nuts 29 and 29 are fastened. As a result, the suspension bolt 5 is sandwiched between the first and second plate portions 21 a and 21 b and the shaft member 25 at the upper end 21 t of the reinforcing steel material 21.
As shown in FIG. 12, when attaching the shaft member 25 to the reinforcing steel material 21, when the reinforcing steel material 21 is inclined in a direction in which the lower end 21u is separated from the suspension bolt 5 with respect to the upper end 21t, the suspension bolt 5 is It enters into the missing part 22 formed at the upper end 21t of the reinforcing steel material 21. Thereby, the reinforcing steel member 21 can be inclined, and the shaft member to the reinforcing steel member 21 is avoided while the supporting steel member 6 suspended by the suspension bolt 5 and the installation object 8 in the building structure are prevented from interfering with the reinforcing steel member 21. 25 attachment operations can be performed.

  Thereafter, as shown in FIG. 13, the reinforcing steel material 21 is pushed up from below. At this time, since the upper end 21t of the reinforcing steel material 21 is linked to the suspension bolt 5 by the shaft member 25, the upper end 21t of the reinforcement steel material 21 does not leave the suspension bolt 5 even if the reinforcement steel material 21 is pushed up. Also at this time, the supporting steel material 6 and the installation object 8 in the building structure are placed while the suspension bolt 5 is inserted into the missing portion 22 at the upper end 21t of the reinforcement steel material 21 and the reinforcement steel material 21 is inclined with respect to the suspension bolt 5. The reinforcing steel material 21 can be pushed up while avoiding interference with the reinforcing steel material 21.

As shown in FIG. 1, when the upper end 21 t of the reinforcing steel material 21 reaches the upper end 5 t of the suspension bolt 5, the lower end 21 u of the reinforcement steel material 21 is approached toward the suspension bolt 5, and the entire length of the reinforcement steel material 21 is increased to the suspension bolt 5. Along. At this time, as shown in FIG. 5, the outer member 15 of the fixture 10 is sandwiched between the reinforcing steel material 21 and the suspension bolt 5 along the inner surface of the lower end 21 u of the reinforcing steel material 21.
Next, the inner member 16 is set to face the inner surface of the outer member 15, and the suspension bolt 5 is sandwiched between the outer member 15 and the inner member 16. Further, the bolt 17 is inserted into the through hole 24 of the reinforcing steel material 21 and the hole 13 of the outer member 15 and screwed into the female screw hole 14 of the inner member 16. Thereby, the lower end 21 u of the reinforcing steel material 21 is connected to the suspension bolt 5 by the fixing tool 10. At this time, since the engaging protrusions 15t and 16t formed on the curved portions 15d and 16d of the outer member 15 and the inner member 16 are engaged with the thread grooves 5n of the suspension bolt 5, the fixing tool 10 and The reinforcing steel material 21 connected to the fixture 10 is restrained in the axial direction of the suspension bolt 5.
By performing the above-described series of operations on each suspension bolt 5 in the same manner, the reinforcing hardware 20 is attached to each suspension bolt 5.

Next, the brace material 30 is attached.
In order to do this, first, the male screw portion 31n at the upper end of the brace rod 31 is screwed into the female screw hole 34n of the upper fixed hardware 32 to some extent, and the upper fixed hardware 32 is temporarily attached to the upper end portion of the brace rod 31.

Thereafter, the upper fixing hardware 32 is fixed to the upper end 21t of the reinforcing steel member 21 as shown in FIG. 14 while supporting the brace rod 31 by hand at a position below the upper end of the brace rod 31. 50. For this purpose, the second nut 53 of the fixing pin 50 is inserted into the first opening 33a of the opening 33 of the upper fixed metal piece 32, and the shaft portion 51b is positioned in the first opening 33a.
Next, as shown in FIG. 15, the brace rod 31 is pulled downward, and the upper fixing hardware 32 is inserted between the first nut 52 and the second nut 53 of the fixing pin 50. In this state, the upper fixed hardware 32 slides obliquely downward along the axial direction of the brace rod 31, and the shaft portion 51b of the fixed pin 50 moves from the first opening 33a into the second opening 33b.
Next, the brace rod 31 is rotated around its central axis, and the male thread 31n at the upper end of the brace rod 31 is screwed into the female thread 34n, and the upper end of the brace rod 31 is opened from the nut member 34. Project to 33 side. Then, as shown in FIG. 7, the upper end portion of the brace rod 31 hits the second nut 53 of the fixing pin 50 and presses the fixing pin 50. The brace rod 31 is screwed until the shaft portion 51b of the fixing pin 50 is pressed against and fixed to the edge portion 33e on the side away from the first opening 33a in the second opening 33b of the upper fixing metal 32.

After the upper end portion of the brace rod 31 is connected to the upper end 21t of the reinforcing steel member 21 via the upper fixed hardware 32, the lower end portion of the brace rod 31 is connected to another adjacent hanging bolt 5 as shown in FIG. It connects with the lower end 21u of the provided reinforcing steel material 21. FIG. For this purpose, the male screw portion 31n at the lower end of the brace rod 31 is inserted into the through hole 35h of the orthogonal plate portion 35b of the lower fixed hardware 35 with the nut 40 being screwed onto the brace rod 31 in advance. A nut 37 is screwed from the tip end side of the rod 31, and the orthogonal plate portion 35 b is fixed to the brace rod 31 by the nuts 37 and 40. Next, the flat plate portion 35 a of the lower fixed metal fitting 35 is placed along the first plate portion 21 a or the second plate portion 21 b of the reinforcing steel material 21, and the hole 36 formed in the flat plate portion 35 a is penetrated through the reinforcing steel material 21. The hole 24 is communicated. Then, the bolt 38 is inserted into the hole 36 and the through hole 24, and the nut 39 is fastened to the bolt 38, thereby connecting the lower fixed hardware 35 to the reinforcing steel material 21.
Such a series of operations is repeated for all brace members 30 to be attached. Thereby, the installation object support body is reinforced by the reinforcing hardware 20 and the brace material 30.

Next, the operation of the reinforcing structure 1 as described above will be described.
In the reinforcing structure 1, even if a compressive force is applied to the suspension bolt 5 due to an earthquake or the like, the reinforcement hardware 20 and the brace material 30 bear bending stress and compression stress acting on the suspension bolt 5, and the suspension bolt 5. Deformation and buckling can be effectively prevented.
Moreover, the suspension bolt 5 can be reinforced only by adding the reinforcement hardware 20 and the brace material 30 to the existing suspension bolt 5.

According to the reinforcement hardware 20 as described above, the installation object support body that includes the plurality of suspension bolts 5 provided on the ceiling slab 2 of the building structure and supports the installation object 8 in the building structure by suspending it. The reinforcing hardware 20 for reinforcing the suspension bolt 5 is provided with long first and second plate portions 21a, 21b extending in the axial direction of the suspension bolt 5, and the first and second plate portions 21a, 21b are provided. Reinforced steel material 21 joined together so as to be in contact with the suspension bolt 5 and an upper end 21t of the reinforcement steel material 21 so that the suspension bolt 5 is sandwiched between the first and second plate portions 21a, 21b. And a shaft member 25 fixed to the first and second plate portions 21a and 21b.
According to such a configuration, the suspension bolt 5 can be reinforced by placing the first and second plate portions 21 a and 21 b of the reinforcing steel material 21 along the suspension bolt 5. When the reinforcing steel material 21 is installed along the suspension bolt 5, the first and second plate portions 21 a and 21 b are placed on the suspension bolt 5 at a position below the upper end 5 t of the suspension bolt 5 at the upper end 21 t of the reinforcement steel material 21. After the contact, the shaft member 25 is attached to the first and second plate portions 21 a and 21 b, and the suspension bolt 5 is sandwiched between the first and second plate portions 21 a and 21 b and the shaft member 25. Thus, the upper end 21t of the reinforcing steel material 21 is locked so as not to be separated from the suspension bolt 5. If the reinforcing steel material 21 is moved upward in this state, the upper end 21t of the reinforcing steel material 21 is suspended while the suspension bolt 5 is sandwiched between the first and second plate portions 21a, 21b and the shaft member 25. It rises along the bolt 5. As a result, the upper end 21t of the reinforcing steel material 21 locked to the suspension bolt 5 at a position below the upper end 5t of the suspension bolt 5 can be slid to the upper end 5t of the suspension bolt 5. When the upper end 21 t of the reinforcing steel material 21 reaches the upper end 5 t of the suspension bolt 5, the first and second plate portions 21 a and 21 b can be fixed along the suspension bolt 5 with the entire reinforcement steel material 21. In this way, it is possible to easily perform the attaching work of the reinforcing steel material 21 without the operator's hand reaching the upper end 5t of the suspension bolt 5.
Therefore, if a temporary scaffold is formed below the ceiling 4 in the vicinity of the lower end 5 b of the suspension bolt 5, a temporary scaffold capable of locking the reinforcement hardware 20 to the suspension bolt 5 and sliding the reinforcement steel material 21 upward is provided. It is possible to easily attach the reinforcing hardware 20 while an operator puts a hand or a part of the body into the space behind the ceiling through the inspection port or the like formed in the above. Thereby, even if the ceiling back space between the ceiling 4 and the ceiling slab 2 on the upper floor is high in the vertical direction, the suspension bolt 5 is long, and the operator's hand cannot reach the upper end 5t of the suspension bolt 5. The reinforcement hardware 20 can be easily attached without assembling a temporary scaffold that can reach the upper end 5t of the suspension bolt 5.
In addition, even if it is difficult to attach the reinforcement hardware 20 in general, the reinforcement hardware 20 can be easily attached. It becomes possible to apply to the target equipment.

Further, the reinforcing steel material 21 is formed with a missing portion 22 that is missing over a certain length along the axial direction of the suspension bolt 5 at the upper end 21t.
According to such a configuration, the lower end side of the reinforcing steel material 21 is the suspension bolt in a state where the suspension bolt 5 is sandwiched between the first and second plate portions 21a, 21b and the shaft member 25 at the upper end 21t of the reinforcing steel material 21. 5, the suspension bolt 5 enters the missing portion 22 at the upper end 21 t of the reinforcing steel material 21. That is, the reinforcing steel material 21 can incline the suspension bolt 5 in a direction in which the lower end is separated from the suspension bolt 5 with respect to the upper end 21 t while avoiding interference with the suspension bolt 5 at the upper end 21 t of the reinforcement steel material 21. Become. As a result, the upper end 21t of the reinforcing steel material 21 can be slid upward with the suspension bolt 5 engaged with the suspension bolt 5, and the installation work of the reinforcing steel material 21 can be easily performed.
Even with such a configuration, the reinforcement hardware 20 can be easily attached to the suspension bolt 5 that suspends the installation object 8 in the building structure.

According to the upper fixed hardware 32 as described above, the upper fixed metal 32 is configured to fix the brace material 30 to the fixing pin 50, and includes an opening 33 and a female screw hole 34n provided to face the opening 33. The fixing pin 50 is provided so as to be positioned in the opening 33, and the male screw portion 31n formed at the end of the brace material 30 is screwed into the female screw hole 34n from the outside of the opening 33 toward the fixing pin 50. By fastening and tightening, the fixing pin 50 is pressed and fixed to the edge 33 e of the opening 33.
According to such a configuration, in order to fix the upper fixed metal piece 32 to the fixed pin 50, the fixed pin 50 is positioned in the opening 33 formed in the upper fixed metal piece 32, and then the end of the brace material 30. The formed male screw portion 31n is screwed into the female screw hole 34n and tightened from the outside of the opening 33 toward the fixing pin 50. Then, the end portion of the brace material 30 abuts on the fixing pin 50 located in the opening 33 and presses the fixing pin 50 toward the edge portion 33 e of the opening 33. As a result, the fixing pin 50 is pressed and fixed to the edge 33 e of the opening 33. In this way, the upper fixed metal piece 32 is simply moved by positioning the fixing pin 50 in the opening 33 and screwing the male screw portion 31n of the brace material 30 into the female screw hole 34n. Can be firmly fixed to the fixing pin 50.
Therefore, even if the space behind the ceiling is high in the vertical direction, a temporary scaffold is assembled below the ceiling 4 so that an operator can put a hand or a part of the body into the space behind the ceiling from an inspection port or the like formed on the ceiling 4. It is possible to easily attach the brace member 30 while performing the work.

The fixing pin 50 includes a shaft portion 51 b and a second nut 53 provided at the tip of the shaft portion 51 b, and the opening 33 has a first opening 33 a having a larger area than the second nut 53 and a second nut 53. The second opening 33b having a smaller area is formed so as to communicate with each other, and the female screw hole 34n is provided on the first opening 33a side.
According to such a configuration, when the end portion of the fixing pin 50 is positioned in the opening 33, the second nut 53 of the fixing pin 50 is inserted into the first opening 33a so that the shaft portion 51b of the fixing pin 50 is the first portion. It is located in the opening 33a. When the shaft portion 51b of the fixing pin 50 is moved from the first opening 33a to the second opening 33b, the area of the second opening 33b is smaller than that of the second nut 53 of the fixing pin 50. It is restrained from coming out of the opening 33b. As a result, the upper fixing hardware 32 can be firmly fixed to the fixing pin 50 while preventing the upper fixing hardware 32 from coming off the fixing pin 50.

Moreover, the installation object support reinforcement structure as described above includes the reinforcement hardware 20 as described above.
According to such a configuration, after the upper end 21t of the reinforcing steel material 21 is locked to the suspension bolt 5 at a position below the upper end 5t of the suspension bolt 5, the reinforcement steel material 21 is slid to the upper end 5t of the suspension bolt 5. Can continue. Thereby, even if the suspension bolt 5 is long in the vertical direction, the reinforcing steel material 21 can be easily attached to the suspension bolt 5.

In one aspect of the present invention, the installation structure support reinforcing structure for a building structure according to the present invention further includes the upper fixed hardware 32 as described above, and a fixing pin 50 is provided on the upper end 21t side of the reinforcing steel material 21. The brace material 30 is fixed to the fixing pin 50 via the upper fixing metal 32, and the lower end portion of the brace material 30 is fixed to another suspension bolt 5 different from the suspension bolt 5 to which the reinforcing steel material 21 is fixed. .
According to such a configuration, the brace material 30 can be easily attached to the fixing pin 50 provided on the upper end 21 t side of the reinforcing steel material 21. Further, by fixing the lower end portion of the brace material 30 to the other suspension bolt 5, the brace material 30 can be installed obliquely between the two suspension bolts 5.
Accordingly, the brace rod 31 of the brace material 30 can be easily attached. Thereby, even if the upper end of the brace material 30 to be attached is high and the attachment work of the brace material 30 is usually difficult, the brace material 30 can be easily attached. It is possible to apply the installed object support reinforcing structure to various target facilities.

(Modification of the embodiment)
Note that the reinforcement support structure, the fixed support structure, and the installation structure support structure reinforcement structure of the building structure according to the present invention are not limited to the above-described embodiment described with reference to the drawings, and various modifications are possible within the technical scope thereof. Examples are possible.
For example, in the above-described embodiment, the installation object support has a structure in which the installation object 8 in the building structure is installed on the support steel material 6 installed between the lower ends of the suspension bolts 5. In the case where the installation object 8 is a ceiling cassette type air conditioner or the like, the installation object 8 in the building structure is supported by directly connecting the suspension bolt 5 without the support steel material 6 being interposed. There may be.
Further, the shaft body 26 may be a full screw bolt or a half screw. A general-purpose product can be used as long as it is a full-screw or half-screw bolt, and it is inexpensive. Further, only the portion of the tip end portion of the shaft body 26 where the double nut 29 is screwed may be cut off. In this way, the shaft main body 26 can be easily mounted since the portion in contact with the suspension bolt 5 has a smooth surface without a thread groove. When the shaft body 26 is a full screw, the shaft portion of the shaft body 26 may be inserted into a cylindrical member, and only the nut screwed portion at the tip of the shaft portion may protrude from the cylindrical member. If it carries out like this, mounting | wearing to the suspension bolt 5 can be performed easily, using a general purpose product.
In addition, the opening 33 formed in the upper fixed metal piece 32 is composed of the first opening 33a and the second opening 33b, but may have any shape. Further, the nut member 34 is welded to the upper fixed hardware 32. However, as long as it has a female screw hole 34n, it may be integrally formed by a press or the like.
Moreover, in the said embodiment, although the reinforcement structure 1 reinforces the installation support body which supports the installation object 8 in the building structure provided in the building structure already constructed and operated, this, However, the building structure may be a new construction, for example.
In addition to this, the configuration described in the above embodiment can be selected or changed to another configuration as appropriate without departing from the gist of the present invention.

1 Supporting object reinforcement structure 31 Brace rod (bar-shaped member)
2 Ceiling slab (frame) 31n Male thread part 5 Suspension bolt 32 Upper fixed hardware (fixed hardware)
8 Installation object 33 Opening 20 Reinforcement hardware 33a 1st opening 21 Reinforced steel (steel material) 33b 2nd opening 21a 1st plate part 33e Edge part 21b 2nd plate part 34n Female screw hole 21t Upper end 50 Fixing pin (fixed) body)
22 Missing part 51b Shaft part 25 Shaft member 53 Second nut (expanded part)
30 brace material

Claims (6)

A plurality of suspension bolts provided in a housing of a building structure, and a reinforcement hardware for reinforcing the suspension bolt for an installation support body that supports an installation in a building structure by suspending it,
A steel material that extends in the axial direction of the suspension bolt and is joined to the long first and second plate portions formed so as to be in contact with the suspension bolt;
A shaft member provided at an upper end of the steel material and fixed to the first and second plate portions so as to sandwich the suspension bolt between the first and second plate portions;
Reinforced hardware with   The reinforcing member according to claim 1, wherein the steel material is formed with a missing portion that is missing at a certain length along the axial direction of the suspension bolt at the upper end. A fixed hardware for fixing a rod-shaped member to a fixed body,
An opening and a female screw hole provided to face the opening;
The fixed body is provided so as to be positioned in the opening, and a male screw portion formed at an end of the rod-shaped member is screwed into the female screw hole from the outside of the opening toward the fixed body. A fixed hardware in which the fixed body is pressed and fixed to the edge of the opening by being fastened and tightened. The fixed body includes a shaft portion and a diameter-expanded portion provided at the tip of the shaft portion,
The opening is formed by providing a first opening having a larger area than the enlarged diameter portion and a second opening having an area smaller than the enlarged diameter portion and communicating with each other.
The fixed hardware according to claim 3, wherein the female screw hole is provided on the first opening side.   An installation object support reinforcement structure for a building structure, comprising the reinforcement hardware according to claim 1. Further comprising the fixed hardware according to claim 3 or 4,
A fixed body is provided on the upper end side of the steel material, and the rod-shaped member is fixed to the fixed body via the fixed hardware,
The end of the rod-shaped member opposite to the end fixed to the fixed body is fixed to another suspension bolt different from the suspension bolt to which the steel material is fixed. Installation structure support reinforcement structure of the described building structure.

Images