JPH0115799Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an installation device for large tension members, and more specifically, it is used to place concrete in order to form the framework of ceiling beams, floors, etc. of steel-framed reinforced concrete structures, such as high-rise buildings. The present invention relates to a device for attaching large tension members used to support formwork and attach scaffolding devices.

In the beam construction process for steel reinforced concrete structures, such as high-rise buildings, after steel frame processing work, steel frame erection, and temporary fixing work, hanging scaffolds such as hanging shelf scaffolding and hanging frame scaffolding are erected, and these hanging scaffolds are used. ,
Tacks, welding or HTB tightening work, and reinforcing work were performed, and after this work was completed, the suspended scaffolding was dismantled and removed before formwork work began.

Next, stepladders, ladders, or frame scaffolding are temporarily installed, and the scaffolding is used to assemble the formwork, pour concrete into the formwork, dismantle the formwork, and finish the work in sequence. For this reason, in the above case, the suspended scaffolding for steel frame assembly and reinforcement work and the scaffolding for formwork assembly and dismantling are temporarily constructed separately, and as there is no scaffolding that can be used in common, work efficiency is poor, and parts It requires a large number of points and is very disadvantageous in terms of cost, so labor saving is particularly desired.

In addition, the formwork is supported by shoring both vertically and horizontally to withstand the load. Vertical supports include pipe boats raised from the ground or the lower floor to the bottom of the formwork, framed scaffolding, and square supports. , tie hangers are used, and the assembly and disassembly of these supports is extremely troublesome and difficult, as there are many parts, and the subfloor surface on which the supports are erected cannot be used as a work space. In cases where the height is 4.5m or more, it is almost impossible to assemble these shorings, and considering the use of two stages and the use of auxiliary supports, if they shake or tilt during use. Not only is this dangerous, but it also causes negative effects such as dimensional errors on the formwork.

Therefore, the purpose of the present invention is to make it possible to easily attach and remove the large tension members that serve both to support the bottom plate of the formwork and to attach the scaffolding to the building frame forming position, and to make it possible for the scaffolding members to perform a series of operations at the same time as the installation of the large tension members. To provide a mounting device for a pulling member which can be easily installed and also supports a formwork.

In order to achieve the above object, the present invention has a configuration in which a hollow rectangular prism-shaped large tension member with a scaffolding device attached faces the steel beam, a threaded tube is provided on the steel beam, and a first threaded tube is attached to the steel beam. The hollow bodies are connected to each other, and attached to the other Ohiki member by passing through a hollow attachment member facing the threaded cylinder and the first hollow body, and passing a bolt through the hollow attachment member from the lower end of the Ohiki member. Penetrating the upper part of the bolt into the first hollow body and screwing it into the threaded cylinder, holding the large tension member to the steel beam via the bolt, and further inserting the second hollow body into the upper outer periphery of the hollow attachment member. It is characterized by the fact that

Examples of the present invention will be described below.

FIG. 1 is a schematic front view of a steel-framed reinforced concrete structure 1, in which a steel beam 3 made of H steel or the like is erected around vertically erected columns.

A large tension member 5 constituting a shoring structure is detachably connected to the lower end of the steel beam 3. A scaffolding frame 15 is suspended from the large tension member 5 via support arms 2 on both sides, and the scaffolding frame 15 A pillar 6 is erected at the end of the scaffolding frame 1, and a handrail 7 is constructed between the pillars 6.
Scaffolding boards are installed on top of 5, and a series of operations from forming the frame to assembling and dismantling the formwork are performed continuously on this scaffolding board.

To explain this in more detail with reference to Figure 2 and below, in the present invention, as shown in Figure 2, in a steel reinforced concrete structure, such as a high-rise building, the floor 35, beams 8, etc., and the frame 9 are poured with concrete. When forming, the concrete casting forms 10, 11, 12 are supported by a shoring 16 consisting of a thick member 18, joist supports 19a, 19b, a large pull member 5, etc., and at the same time, this shoring 16 is Steel frame rivets, welding, reinforcing work, formwork assembly, dismantling, concrete pouring,
This allows finishing work to be carried out continuously.

The shoring 16, which is a formwork support device, includes a hollow rectangular column-shaped beam extension member 5, thick members 18 standing on both sides of the extension member 5, and joists extending in a direction intersecting the extension member 5. support materials 19a, 19b,
It consists of side plate fixing members 21, 21 which are detachably connected to the thick end member 18 and the formworks 10, 11, a threaded cylinder 22 for attaching and detaching the large tension member 5 to the steel frame 3 side, and a hollow attachment member 23. In some cases, it is possible to provide a support member for a support beam on the upper part of the thick member 18.

The tops of the end members 18, 18 are connected by a rod or other connecting member 24, and the center of this connecting member 24 is connected to a steel beam H by welding, bolts and nuts, or other methods.
It is fixed to the top of the steel 3 and thereby the thick member 18
The large tension member 5 is fixed to the H steel 3 which is a steel beam.

In FIG. 2, the method of attaching the Ohiki member 5 and the hanging scaffold 17 is to first connect the Ohiki member 5 to the steel beam 3 on the ground surface via bolts 26, threaded tubes 22, and attachment members 23. In addition, the suspension scaffold 17 is connected in advance to the arm or support arm 2 provided on the large pull member 5, and the steel beam 3, the large pull member 5, and the suspended scaffold 17 are lifted together with a crane or the like. By temporarily fixing the steel beams 3 in this state, the tension members 5 and the hanging scaffolding 17 are installed at the frame forming position.

Next, details of the formwork support 16 will be explained.

The thick end members 18 are fixed to both sides of the large pull member 5 through sockets 25 having a U-shaped cross section, bolts 27, and nuts 28, and thereby the end thick members 18, 18 are fixed.
will stand up on both sides of the large pull member 5.

Joist supports 19a and 19b are disposed approximately at the center and on both sides of the large tension member 5 in a direction perpendicular thereto.

The central joist support member 19a has a protrusion 2 on the lower surface of the end.
By inserting this protrusion 29 into a hole formed on the upper surface of the outer tension member 5, the joist support material 19a is fixed to the upper surface of the outer tension member 5.

Similarly to the central support member 19a, the support members 19b for the joists on both sides are made of a steel material having an L-shaped cross section, for example, and have their lower end surfaces in contact with the upper surface of the large tension member 5, and the side surfaces of the end portions are A protrusion 37 is provided to protrude laterally, and this protrusion 37 is inserted into a gourd-shaped hole 38 formed inside the lower part of the thick member 18.
The support material 19a for the joist is fixed to the end member 18.

The gourd-shaped hole 38 consists of a part with a large inner diameter and a part with a small inner diameter.If the protrusion 37 is inserted into the part with a larger inner diameter and then lowered to the part with a smaller inner diameter, the flange at the tip of the protrusion 37 will adjust to the inner diameter. Protrusion 3 because it is larger than the diameter of the small part of
The support material for the joist is prevented from coming off through the joist 7.

This joist support material 19b also serves as a formwork support material for supporting the formwork 12 at the lower end and the formwork 11 at the side portions.

The attachment device for the large tension member of the present invention will be described in detail.

One or more hollow pipe-shaped attachment members 23 are attached to the large tension member 5, and a threaded cylinder 22 facing the attachment member 23 is vertically installed at the lower end of the steel beam 3. The bolt 26 inserted from the lower end of the pull member 5 is attached to the hollow attachment member 23.
, and its tip threaded portion is screwed into the thread of the threaded tube 22 , whereby the large tension member 5 is attached to the steel beam 3 via the threaded tube 22 , the attachment member 23 , and the bolt 26 .
It is detachably connected to the barrel H steel.

A first hollow body 40 and a second hollow body 41 made of metal, synthetic resin, rubber, etc. are connected to the lower part of the threaded cylinder 22 and the upper outer periphery of the mounting member 23, respectively, and the insides of these hollow bodies 40, 41 are connected to each other. the bolt 2
I am trying to insert 6. In this case, when concrete is poured into the formworks 10, 11, 12, the steel beam 3, the mounting member 22, and the hollow bodies 40, 41 are embedded in the concrete, but the bolts 26, the mounting member 23 The concrete does not adhere to the formwork 12 and can be removed once the concrete has hardened, and furthermore, the concrete is prevented from being damaged when the formwork 12 is removed. The first hollow body 40 is used as a member for adjusting the dimensions of the threaded cylinder 22 between the extension members 5, in other words, since the size and thickness of the molded frame vary at the construction site. However, if the threaded cylinder 22 extends to the position of the large tension member 5 and the thickness of the frame between the threaded cylinder 22 and the large tension member 5 is equal to the length of the threaded cylinder 22, the hollow body 40 or the hollow body 40, 41 is not used.

The end member 18 is composed of a hollow rectangular body or the like,
This top part may be directly connected to the connecting member 24, but
In order to adjust the length in the vertical direction, it is possible to insert connecting members 18a, 18b, .

In addition, when fixing the connecting member 24 to the thick member 18,
A cylindrical body 42 is inserted into the top, a support plate 43 is fixed to the cylindrical body 42, a support plate 44 is similarly brought into contact with the upper surface of this support plate 43, and both are fixed with bolts 45 and nuts 46 or other methods, Upper end support plate 4
It is possible to fix the connecting member 24 to 4 by welding or other methods.

A bracket 49 is fixed to the support plate 44 via bolts 47 and nuts 48, and a beam 50 is fixed to this bracket 49.

Side plate fixing members 20 and 21, which are lateral thick parts, are disposed inside the thick end member 18 in a direction perpendicular thereto, and these side plate fixing members 20 and 21 are made of elongated frames having an L-shaped cross section. A notch 51 is formed at the end thereof, and a protrusion 52 protrudes from the inside thereof. On the other hand, gourd-shaped holes 38 are bored at arbitrary intervals inside the vertical end member 18, and the projections 52 are inserted into these holes 38. That is, each side plate fixing member 2
When the protrusions 52 of No. 0 and 21 are inserted into the large diameter part of the hole 38, and then the protrusions 52 are lowered and fitted into the small diameter part, the flanges of the protrusions 52, which have a larger diameter than the small diameter part, cannot be removed, and this prevents each side plate fixing part from coming out. 20,
21 will be connected to the end member 18. In this case, since there is a notch 51, the side plate fixing member 2
Even if 0 and 21 are L-shaped frames, this notch 5
1 into the thick member 18, it is ensured that it is held in the perpendicular direction.

Next, screw holes 53 are bored in the side forms 10 and 11, and an L-shaped hook member 55 is hooked to one of the side plate fixing members 21 via a hook 54, and the vertical portion of this hook member 55 is A hole 57 is bored in the hole 56, and a bolt 58 inserted through the hole 57 is screwed into the screw hole 53, whereby the formwork 10, 1 serving as the side plate is screwed into the screw hole 53.
1 is drawn to and held by the side plate fixing member 21 via a hook member 55.

In the formwork support device 16 serving as the shoring described above, the scaffolding device 17 performs reinforcement work of reinforcing bars 59 and 60,
Performs studding and welding of steel frame sections, as well as work from assembling to dismantling formwork.

To assemble the formwork, first, hold the end members 18, 18 and the support members 19a, 19b for the joists on the large pull member 5, and then attach the side plate fixing members 20, 21, which are the horizontal end members, to the end members 18, 18. Keep it fixed. Next, the formwork 12 is raised horizontally on the support members 19a and 19b for the joists, and then the formworks 10 and 11 are placed on the joist support members 18 and 19b.
18, and is held on the side of the end members 18, 18 via a hook member 55.

From this state, concrete is poured into the formworks 10, 11, 12, and when it hardens, the formworks 10, 1
A frame 9 having a shape partitioned by 1 and 12 is molded. Next, when disassembling this, remove the support plate 43 and the end member 18 from the support plate 44, remove the lower end of the end member 18 from the large pull member 5, and further remove the end member 18 from the support plate 44. Then also remove the side plate fixing members 20, 21 and the formworks 10, 11. Further, when the bolts 26 of the large tension member 5 are removed, the formwork 12 and the large tension member 5 are removed from the steel beam 3 side.

In the above, when all the formworks 10, 11, 12 are dismantled, the connecting rod 24, threaded cylinder 22, hollow body 4
0 and 41 are embedded in the body 9.

According to the installation device of the present invention, the scaffolding device can be installed at the same time as supporting the formwork 12, so the scaffolding can be temporarily installed at the same time as the steel frame is assembled, and this scaffolding can perform HTB tightening work, reinforcement work, beam shaping work, etc. Assembling the frame,
Since a series of operations such as concrete pouring and dismantling of formwork can be carried out, there is no need for hanging frame scaffolding, supports, bulkheads, studs, etc. in conventional construction methods, improving work efficiency, lowering costs, and shortening construction period. This is a significant change.

In addition, compared to the conventional method of assembling scaffolding from the lower floor or the ground, it requires fewer parts, is safer, and allows the lower floor to be used more effectively.

Furthermore, the merits of this invention at actual construction sites are that it eliminates the shortage of formwork assembly carpenters because it does not require skill, reduces the burden of planning, construction, and management on site, shortens the construction period, and improves reliability. , enhanced safety and improved concrete placement accuracy.
This can contribute to labor saving and cost reduction.

As described above, the effects of the configuration of the present invention are as follows.

The tension members are installed simply by inserting bolts and connecting them to the threaded cylinder, so when the steel frame is lifted up and fixed with a crane, the tension members for formwork assembly are assembled, and the steel frame is fully tightened. Reinforcement work,
Scaffolding equipment can also be installed at the same time to perform a series of operations, from assembling and dismantling formwork to pouring concrete and finishing.

The shoring that supports the formwork can be set using the large tension members while they are suspended, so there is no need to separately install supports from the ground or the subfloor, and there is no need for special temporary scaffolding. There is no need to set it either. Moreover, since a large space is available on the lower floor surface at this time, it is possible to work on the lower floor surface.

Since the hollow attachment member passes through the large tension member, the bolt is guided while being smoothly centered, making it easy to attach and detach the bolt.

The large pull member is formed in the shape of a hollow rectangular prism, and supports the hollow mounting member at two points at its upper and lower ends, so that the mounting member is reinforced and vertical centering is possible.

Since the first hollow body is provided at the bottom of the screw tube, the dimensions between the large pull member and the screw tube, or in other words, the size and thickness of the body to be formed, vary at the construction site, so the dimensions can be adjusted. At the same time, concrete does not adhere to the bolts, and the bolts can be easily removed after concrete is placed.

Since the second hollow body is inserted into the upper outer periphery of the mounting member, concrete does not adhere to the mounting member, and the mounting member can be easily removed after concrete is poured, allowing reuse.

[Brief explanation of the drawing]

The attached drawings relate to embodiments of the present invention, and show the first embodiment.
The figure is a schematic front view of the shoring and scaffolding equipment, Figure 2 is an enlarged front view of the shoring, Figure 3 is a side view of Figure 2, Figure 4 is a perspective view of the shoring, and Figure 5 is a large scale view of the shoring. FIG. 3 is a longitudinal sectional side view of the pulling member attachment device. 3...Steel beam, 5...Drawing member, 17...Scaffolding device, 22...Screw cylinder, 23...Mounting member,
26...Bolt.

Claims (1)

[Scope of utility model registration request] A hollow rectangular prism-shaped large tension member with a scaffolding device attached thereto faces the steel beam, a threaded cylinder is provided on the steel beam, the first hollow body is connected to this threaded cylinder, and the screw is connected to the other large tension member. A hollow mounting member facing the cylinder and the first hollow body is installed, a bolt is passed through the hollow mounting member from the lower end of the main member, and the upper part of the bolt is penetrated into the first hollow body. A mounting device for a large tension member, which is screwed into a threaded cylinder, held to a steel beam via bolts, and further has a second hollow body inserted into the upper outer periphery of the hollow mounting member.