JPH0551996A - Anchor device used as suspension and installation of concrete panel and suspension and installation method - Google Patents

Abstract

PURPOSE:To make it possible to install an anchor device used as suspension and installation in a free position of a concrete panel in accordance with a state of a construction site and, at the same time, to promote anchoring yield strength. CONSTITUTION:In the case of execution, first of all, a longitudinal hole 10 is formed in an upper end surface 9a of a concrete panel 9 and, at the same time, a horizontal hole 13 connected to the longitudinal hole 10 is formed in a wall surface 9b. A suspension member 3 is screwed into an upper end screw section 7 of a bar-shaped member 2, and the bar-shaped member 2 is inserted into the longitudinal hole 10. After that, a cylindrical member 5 is fitted to an anchor bolt 4 to insert it into the horizontal hole 13, and the anchor bolt 4 is screwed into a screw hole 8 on a side of the bar-shaped member 2. Then, a suspension device is hooked to a hook section 11 of the suspension member 3 to pull up the concrete panel 9 up to a specific position of a building skeleton 15, and a panel mounting metal fixture 6 is fastened and fixed with the anchor bolt 4 to mount the concrete panel 9 to the building skeleton 15. After that, the suspension member 3 is removed from the bar-shaped member 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete panel hoisting / attaching anchor device and a hoisting / attaching method for hoisting and mounting a concrete panel on a building frame at a construction site.

[0002]

2. Description of the Related Art Conventionally, when a concrete panel is hoisted at a construction site by using a hoisting machine such as a crane, an anchor nut is embedded in the upper edge of the concrete panel, and an eye bolt for hoisting is screwed into the anchor nut. At the same time, the eyebolt is hooked with a lifting device to lift the concrete panel.

The concrete panel thus hoisted is tightened and fixed to the building body by a fixing bolt through a panel mounting metal fitting, and then the hoisting eye bolt is removed from the anchor nut. in this case,
The fixing bolts that fix the panel mounting brackets are tightened into anchor nuts embedded in the wall surface of the concrete panel.

[0004]

According to the above-mentioned conventional structure, it is necessary to provide separate anchor nuts for lifting and mounting the concrete panel, which results in a large number of parts and a high cost. is there. Moreover, since the anchor nuts are embedded in the concrete when manufacturing the concrete panel, the positions of the anchor nuts are uniformly decided at the panel manufacturing plant, and it is changed according to the situation at the construction site. It is completely impossible to do, and there is a drawback that the degree of freedom in design and construction is small.

Therefore, recently, in order to make it possible to freely set the position of the anchor nut at the construction site, the actual opening 61
As described in JP-A-161320 and JP-A-63-156146, a method of forming a hole at an arbitrary position of a concrete panel at a construction site and fixing an anchor nut in the hole is also considered. .. However, even in this case, since it is necessary to provide separate anchor nuts for lifting and mounting the concrete panel, it is troublesome to mount the anchor nut, and there is a drawback that the construction efficiency is rather deteriorated.

The present invention has been made in view of the above circumstances, and therefore an object thereof is that an anchor device can be attached to an arbitrary position of a concrete panel at a construction site according to the situation of the site. An object of the present invention is to provide a lifting / attaching anchor device for a concrete panel and a lifting / attaching method capable of increasing the degree of freedom in design / construction and improving the construction efficiency.

[0007]

A concrete panel hoisting / attaching anchor device of the present invention is formed with a vertical hole formed in an upper fore surface of a concrete panel and a wall surface of the concrete panel so as to communicate with the vertical hole. A rod-shaped member which is inserted into the vertical hole and has a threaded portion at an upper end portion and a side surface portion having a screw hole facing the lateral hole, and an upper end of the rod-shaped member. A lifting member that is screwed into the threaded portion and has a hooking portion for lifting at the upper end, a fixing bolt that is inserted into the lateral hole and that is screwed into a screw hole in the side surface portion of the rod-shaped member, and a shaft portion of this fixing bolt. And a panel mounting metal fitting that is fastened and fixed by the fixing bolts to mount the concrete panel to the building frame. .

A method of hoisting a concrete panel at a construction site by using such an anchor device and attaching it to a building frame includes a step of forming a vertical hole on the upper fore surface of the concrete panel, and a step of forming the vertical hole on the wall surface of the concrete panel. A step of forming a lateral hole communicating with each other; a step of screwing the lifting member into an upper end screw part of the rod-shaped member to insert the rod-shaped member into the vertical hole; and a fitting of the tubular member to the fixing bolt. Then, the step of inserting the fixing bolt into the screw hole of the side surface portion of the rod-shaped member, and hooking the hoisting device to the hooking portion of the hoisting member to fix the concrete panel to the predetermined shape of the building frame. A process of pulling up to a position and a process of mounting the concrete panel at a predetermined position of the building frame by tightening and fixing the panel mounting bracket with the fixing bolt. If, comprising the lifting member after installation of the concrete panel and a step of removing from the bar-like member.

[0009]

According to the present invention, if vertical holes and horizontal holes are formed by drills or the like at arbitrary positions on the concrete panel according to the situation at the construction site, the anchoring device for both lifting and mounting can be properly positioned on the concrete panel. It can be attached to, and the degree of freedom in design and construction can be increased. Moreover, since this anchor device has both lifting and mounting functions, the number of mounting steps can be reduced to about half as compared with the conventional case where separate anchor nuts are mounted for lifting and mounting.

Moreover, since the tubular member can be fitted to the shaft portion of the fixing bolt and the hoisting load of the concrete panel can be dispersed and received by the tubular member, the anchor proof strength is improved. Further, since the tubular member also acts to reinforce the shaft portion of the fixing bolt, the anchor displacement in the initial stage of lifting is small, and the safety of lifting work is improved in combination with the above-mentioned improvement of anchor proof strength. In addition, the tubular member also serves to prevent concrete powder from adhering to the thread of the fixing bolt, which has the advantage of facilitating the work of tightening the fixing bolt into the screw hole of the rod-shaped member.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The lifting / mounting anchor device 1 used in this embodiment is composed of a rod-shaped member 2, a lifting member 3, a fixing bolt 4, a tubular member 5 and a panel mounting bracket 6. The rod-shaped member 2 is formed, for example, by cutting a steel pipe into a predetermined length, has an internal threaded portion 7 formed at the upper end thereof, and has a screw hole 8 horizontally penetrating substantially in the center of the side surface thereof. There is. Corresponding to the rod-shaped member 2, the upper edge surface 9 of the concrete panel 9 made of lightweight cellular concrete
A vertical hole 10 is vertically formed in a by a drill or the like, and the rod-shaped member 2 is inserted into the vertical hole 10 from above.

On the other hand, the hoisting member 3 is composed of, for example, an eyebolt, has a hooking portion 11 for hoisting at its upper end, and has a male screw portion 12 at its lower end. Then, the male screw portion 12 of the lifting member 3 is screwed into the female screw portion 7 at the upper end of the rod-shaped member 2 to attach the lifting member 3 onto the rod-shaped member 2.

Further, the fixing bolt 4 fixes both the rod-shaped member 2 and the panel mounting member 6. Corresponding to the fixing bolt 4, the wall surface 9 on the back side of the concrete panel 9
A horizontal hole 13 communicating with the vertical hole 10 is horizontally formed in b by a drill or the like. Then, a tubular member 5 made of, for example, a steel pipe is fitted to the shaft portion of the fixing bolt 4 with a slight clearance, and both are inserted into the lateral hole 13 so that the tip end portion of the fixing bolt 4 is a side surface of the rod-shaped member 2. It is screwed into the screw hole 8 of the section.

Further, the lightning plate 6 which is a panel mounting metal fitting is previously attached to the shaft portion of the fixing bolt 4 together with the washer 21. On one side of this lightning plate 6, a bolt insertion hole 14 for inserting the shaft portion of the fixing bolt 4 is inserted.
Are formed. On the other hand, as shown in FIG. 2, a through angle 17 is attached to the steel pillars 15 and 16 which are the building frame by welding or the like, and a concrete panel 9 is attached to the through angle 17 by a lightning plate 6.

The anchor device 1 configured as described above is
In order to secure the lifting strength and mounting strength, the dimensions of each part are set as follows. That is, the outer diameter D1 of the rod-shaped member 2 is 1/3 or less of the thickness T of the concrete panel 9 and is 1 cm or more (for example, T = 10 cm, D1 = 2 cm).
The length L1 of the rod member 2 is, for example, 1/6 or more of the vertical width L2 of the concrete panel 9 (for example, L1
= 20 cm, L2 = 60 cm). The length L3 of the vertical hole 10 into which the rod member 2 is inserted is L1 / 2 + L2 / 2 or more (for example, L3 = 40 cm).

On the other hand, the inner diameter D2 of the lateral hole 13 is equal to or larger than the outer diameter D1 of the rod member 2 and less than twice the inner diameter D3 of the vertical hole 10 and L1.
Is less than 1/2 (for example, D2 = 3.0 cm, D3
= 2.2 cm). The outer diameter D4 of the tubular member 5 inserted into the lateral hole 13 is less than the inner diameter D2 of the lateral hole 13 and is greater than or equal to the outer diameter D1 of the rod member 2 (for example, D4 = 2.8c).
m). Further, the length L4 of the tubular member 5 is smaller than the distance L5 from the wall surface of the concrete panel 9 to the vertical hole 10,
It is not less than the outer diameter D4 of the tubular member 5 (for example, L4 = 3.
0 cm, L5 = 3.9 cm).

Next, using the lifting / mounting anchor device 1 having the above-mentioned structure, the concrete panel 9 is constructed at the construction site.
A method of hoisting and attaching to the through angle 17 of the columns 15 and 16 will be described.

First, the upper edge 9 of the concrete panel 9
Vertical holes 10 are vertically formed at two positions on both right and left sides of a by using a drill or the like. Corresponding to each vertical hole 10, horizontal holes 13 are similarly formed by a drill or the like at two locations on both left and right sides of the wall surface 9b of the concrete panel 9, and the horizontal hole 13 is formed into the vertical hole 1
Connect to 0. The order of forming the vertical holes 10 and the horizontal holes 13 may be the reverse of the above, and the point is that the positions of the vertical holes 10 (positions of the fixing bolts 4) are at positions where the concrete panel 9 can be attached.

Then, by screwing the male screw portion 12 of the lifting member 3 into the female screw portion 7 at the upper end of the rod member 2,
The lifting member 3 is attached on the rod-shaped member 2 to integrate them. Then, the rod-shaped member 2 is inserted into the vertical hole 10 from above. After that, the washer 21, the lightning plate 6 and the tubular member 5 are fitted to the shaft portion of the fixing bolt 4 in this order, and the fixing bolt 4 is inserted into the lateral hole 13 together with the tubular member 5 to fix the fixing bolt 4. The tip portion is screwed into the screw hole 8 on the side surface portion of the rod-shaped member 2. As a result, the rod-shaped member 2 and the fixing bolt 4 are fixed in the vertical hole 10 and the horizontal hole 13, respectively, and the concrete panel 9 can be hoisted using the hoisting member 3 screwed onto the rod-shaped member 24. Become.
When the panel is hoisted, the lightning plate 6 is hung downward as shown by the solid line in FIG.
When the panel is attached after the hoisting, it can be turned sideways by approximately 90 ° as shown by the chain double-dashed line in FIG.

Thereafter, as shown in FIG. 4, the lifting member 3
After hooking the locking metal fittings 19 at both ends of the lifting wire 18, which is a lifting device, on the hook portion 11 of the hook 2 of the crane or the like.
0 is hooked on the center of the lifting wire 18 and pulled up.
As a result, the concrete panel 9 is pulled up to the predetermined positions of the pillars 15 and 16 to reach the through angle 17.

In this state, the lightning plate 6 is turned sideways to the side of the through angle 17 by about 90 ° so as to engage with the through angle 17, and then the fixing bolt 4 is completely tightened to fix the lightening plate 6. , The concrete panel 9 is attached to the through angle 17 of the pillars 15, 16. After that, the locking metal fittings 19 at both ends of the hoisting wire 18 are removed from the hook portions 11 of the hoisting member 3, and further the hoisting member 3 is removed from the rod-shaped member 2, whereby the hoisting / attaching work for the concrete panel 9 is completed. ..

According to the present embodiment described above, if the vertical hole 10 and the horizontal hole 13 are formed by a drill or the like at an arbitrary position of the concrete panel 9 according to the situation at the construction site, the anchor device for both lifting and mounting can be obtained. 1 for concrete panel 9
Since it can be mounted at an appropriate position, the degree of freedom in design and construction can be increased. Moreover, since this anchor device 1 has both a lifting function and a mounting function, the number of mounting steps can be reduced to about half as compared with the conventional case where separate anchor nuts are used for lifting and mounting. Therefore, the construction efficiency can be improved.

By the way, in this embodiment, since the tubular member 5 is fitted to the shaft portion of the fixing bolt 4, the hoisting load of the concrete panel 9 is mainly received by the tubular member 5 when hoisting the panel. However, temporarily, the tubular member 5
When the load of the concrete panel 9 is received by the shaft portion of the fixing bolt 4 by omitting the above, the anchor proof strength is lowered, and the horizontal hole 1 of the concrete panel 9 is lifted when the panel is lifted.
There is a possibility that cracks, defects, etc. may occur in the peripheral portion of 3. This is because the shaft portion of the fixing bolt 4 is thin and the load is likely to concentrate, and the edge of the thread of the shaft portion bites into the inner peripheral surface of the lateral hole 13. In this case, the thickness of the shaft portion of the fixing bolt 4 has to be smaller than that of the rod-shaped member 2 having the screw hole 8 into which the bolt is screwed, and the thickness of the rod-shaped member 2 is the vertical hole 10. In order to secure the panel thickness (panel strength) of the formation portion of the concrete panel 9, it is necessary to set it to 1/3 or less of the thickness T of the concrete panel 9, and from these circumstances, the shaft portion of the fixing bolt 4 becomes thin. I will end up.

In consideration of such circumstances, in this embodiment,
Since the tubular member 5 is fitted to the shaft portion of the fixing bolt 4,
When the panel is hoisted, the hoisting load of the concrete panel 9 is mainly received by the tubular member 5. Therefore, the hoisting load of the concrete panel 9 can be dispersed and received by the smooth outer peripheral surface of the relatively thick tubular member 5, and the concentration of the load as described above does not occur. As a result, the anchor proof strength is improved, and cracks or defects do not occur in the peripheral portion of the lateral hole 13 of the concrete panel 9 when the panel is lifted.

Moreover, since the tubular member 5 also acts to reinforce the shaft portion of the fixing bolt 4, the anchor displacement in the initial stage of lifting is small, and in combination with the above-mentioned improvement in anchor proof strength, the safety of lifting work is improved. Can be improved. In addition, the tubular member 5 also serves to prevent concrete powder from adhering to the threads of the fixing bolt 4, so that the work of tightening the fixing bolt 4 into the screw hole 8 of the rod member 2 is facilitated. There is also.

In this embodiment, the concrete panel 9 is used.
Although the lightning plate 6 is used as the panel mounting bracket for mounting the column to the through angle 17 of the pillars 15 and 16, panel mounting brackets of other shapes may be used, and the panel mounting bracket and the through angle 17 are welded. You may do it.

In this embodiment, the eyebolt is used as the lifting member 3, but other shapes such as hook bolts may be used. Furthermore, the rod-shaped member 2 does not necessarily have to be hollow and may be formed of a solid round rod.

In addition, the present invention can be variously modified without departing from the scope of the invention, such as being applicable to concrete panels other than lightweight cellular concrete panels.

[0029]

As is apparent from the above description, the present invention allows the anchor device for both lifting and mounting at the construction site to be mounted at an appropriate position on the concrete panel according to the situation at the site, so that The degree of freedom in construction can be increased, and the installation man-hour can be reduced to almost half compared with the conventional case where separate anchor nuts for lifting and mounting are installed, and construction efficiency can also be improved. ..

Moreover, since the tubular member can be fitted to the shaft portion of the fixing bolt and the hoisting load of the concrete panel can be dispersed and received by this tubular member, the anchor proof strength is improved and the hoisting load of the panel is improved. No cracks or defects will occur around the horizontal holes in the concrete panel. Furthermore,
Since the tubular member also acts to reinforce the shaft portion of the fixing bolt, the anchor displacement in the initial stage of lifting is small, and in combination with the above-mentioned improvement in anchor proof strength, the lifting work safety can be improved. In addition, the tubular member also serves to prevent concrete powder from adhering to the thread of the fixing bolt, which has the advantage of facilitating the work of tightening the fixing bolt into the screw hole of the rod-shaped member.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of an essential part showing an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part partially broken away.

FIG. 3 is an exploded perspective view of an anchor device.

FIG. 4 is a perspective view showing a concrete panel hoisting state.

[Explanation of symbols]

1 is an anchor device for both lifting and mounting, 2 is a rod-shaped member, 3
Is a lifting member, 4 is a fixing bolt, 5 is a tubular member, 6 is a lightning plate (panel mounting bracket), 7 is a female screw portion, 8
Is a screw hole, 9 is a concrete panel, 9a is an upper edge surface,
9b is a wall surface, 10 is a vertical hole, 11 is a hook portion, 12 is a male screw portion, 13 is a horizontal hole, 15 and 16 are pillars (building frame), 17
Is a through angle, 18 is a hoisting wire (hoisting equipment),
Reference numeral 19 is a metal fitting.

Claims (2)

[Claims] 1. A lifting / mounting anchor device that is attached using a vertical hole formed on the upper edge of a concrete panel and a horizontal hole formed on a wall surface of the concrete panel so as to communicate with the vertical hole. A rod-shaped member that is inserted into the vertical hole and that has a threaded portion at the upper end and a threaded hole that faces the lateral hole at the side surface, and a hook for lifting at the upper end that is screwed into the upper threaded portion of the rod-shaped member. A lifting member having a portion, a fixing bolt inserted into the lateral hole and screwed into a screw hole of a side surface portion of the rod-shaped member, and a cylinder fitted into the shaft portion of the fixing bolt and inserted into the lateral hole An anchor device for both lifting and mounting of a concrete panel, comprising: a panel-shaped member; and a panel mounting metal fitting that is fixed by tightening with the fixing bolt and that mounts the concrete panel to a building frame. 2. A rod-shaped member having a threaded portion at an upper end portion and a threaded hole at a side surface portion; Utilizing a fixing bolt screwed into a screw hole on the side surface of the rod-shaped member, a tubular member fitted to the shaft portion of the fixing bolt, and a panel mounting bracket tightened and fixed by the fixing bolt. A method of lifting a concrete panel at a construction site and attaching it to a building frame, the step of forming a vertical hole in the upper edge face of the concrete panel, and the step of forming a horizontal hole communicating with the vertical hole on the wall surface of the concrete panel, Screwing the lifting member into the upper end screw portion of the rod-shaped member, inserting the rod-shaped member into the vertical hole, and inserting the tubular member into the fixing bolt and inserted into the lateral hole, The fixed bolt A step of screwing into a screw hole of a side surface of the rod-shaped member, a step of hooking a hoisting device to a hooking part of the hoisting member to pull up the concrete panel to a predetermined position of the building frame, and the panel by the fixing bolt. A step of attaching the concrete panel to a predetermined position of the building body by fastening and fixing a mounting bracket, and a step of removing the lifting member from the rod-shaped member after attaching the concrete panel. Lifting and mounting method.