JPH0742368A - Pc floor panel suspension method - Google Patents

Abstract

PURPOSE:To lift two PC floor panels simultaneously, and install the lower side PC floor panel without allowing the upper side PC floor panel to be an obstacle. CONSTITUTION:Four of eight slinging wires 1, 2 are used for suspension of an upper side PC floor panel 3, and the outer four are used for suspending a lower side PC floor panel 4. The lower side slinging wires 2 are longer than the upper side slinging wires 1, and they are held by a spacer frame to have a larger lateral interval between each other. The upper side slinging wires 1 are installed on four corners of the upper side PC floor panel 3, and the lower side slinging wires 2 are installed on four corners of the lower side PC floor panel 4 as the lower side PC floor panel 4 is set to be relatively perpendicular to the upper side PC floor panel 3, thereby the two PC floor panels are suspended.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for simultaneously suspending two PC floor slabs in order to improve the efficiency of a laminated construction work.

[0002]

2. Description of the Related Art In erection of a laminated structure such as a steel structure parking lot, for example, when 300 PC slabs are used for each floor, the PC slabs are lifted up one by one and installed. As a result, the higher the height, the longer the lifting time and the poorer the efficiency. Therefore, in order to increase the efficiency of hanging, two PC floor slabs may be mounted by being lifted.

When the two PC floor slabs are simultaneously suspended as described above, conventionally, as shown in FIG. 5, two PC floor slabs 3 are provided by four sling wires 1 extending in four directions. 4 were lifted in a state where they were oriented in the same direction and faced each other vertically, and after hoisting to the target floor, they were attached between the beams in order from the lower PC floor slab 4.

[0004]

However, in the conventional hanging method as described above, since the two PC floor slabs 3 and 4 hung together are oriented in the same direction, the two PC floor slabs are hung between the beams close to the columns. When installing the lower PC floor slab 4, the upper PC
There is a risk that the floor slab 3 will interfere with the pillars and beams. In addition, when the lower PC floor slab 4 is attached, the upper P directly above the worker.
Since the C floor slab 3 is located, it is necessary to pay attention to the upper PC floor slab 3 during the installation work, and especially the vertical work is likely to occur, which is dangerous.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a hanging method in which an upper PC floor slab does not get in the way when a lower PC floor slab is attached.

[0006]

In order to achieve the above object, the method for suspending a PC floor slab according to the present invention is a state in which two rectangular PC floor slabs are vertically opposed to each other at a predetermined interval. In the method of hanging with sling wires at the same time, 2
It is characterized in that the PC plates are hung in a state of being opposed to each other so that the longitudinal directions of the PC plates are orthogonal to each other.

At this time, the sling wires for suspending the upper PC floor slab and the lower PC floor slab are separated from each other, and an interval between the wires is provided in the middle of the sling wire for suspending the lower PC floor slab. It is advisable to set a wide gap between the wire and the side end face of the upper PC floor slab by interposing a spacer frame for holding the wire. Further, by setting the interval between the upper and lower PC floors to be higher than the floor height, it is possible to avoid interference with the beams on the upper floor.

[0008]

[Function] The PC floor slab is lifted to the desired floor, and the lower PC
When installing the floor slab, the upper and lower PC floor slabs are arranged in a cross shape in a plan view, so that the upper PC floor slab comes into a longitudinal position between the columns and collides with the columns. Is avoided. Further, when performing the work of attaching the lower PC floor slab, it is possible to prevent the upper PC floor slab from being positioned immediately below the worker.

Further, by interposing a spacer frame, a sling wire for suspending the lower PC floor slab and an upper PC
The gap between the side end surface of the floor slab becomes wide, and even if the upper PC floor slab swings, interference between the upper PC floor slab and the wire is prevented. At the same time, by setting the distance between the upper and lower PC slabs to be higher than the floor height, it is possible to avoid interference between the upper floor beam and the upper PC slab.

[0010]

Embodiments of the present invention will be described with reference to the drawings.
First, the structure will be described. As shown in FIG. 1, eight sling wires 1 and 2 extend from a predetermined point A connected to a hook of a crane or the like, and four slant wires 1 and 4 (hereinafter, upper sling wire) 1) is used for suspending the upper PC floor slab 3, and the other 4 (hereinafter, lower sling wire 2)
Is used for hanging the lower PC floor slab 4.

The above-mentioned four lower sling wires 2 are longer than the upper sling wire 1 and are fixed to a rectangular frame body 5 serving as a spacer frame in the middle thereof. It is held so that the lateral gap is wide. Also, change the length of the wire 2 to P
By setting the interval between the C floor slabs to be higher than the floor height, interference between the upper floor beams and the PC floor slabs is prevented.

As shown in FIG. 2, the frame body 5 is a frame in the lower sling wire 2 when the lower PC floor slab 4 is suspended, as compared with the case where the frame body 5 is not interposed. By increasing the inclination angle from the lower PC floor slab 4 between the body 5 and the lower PC floor slab 3, the wire 2 and the upper PC floor slab 3 can be suspended when suspended. It has a role of widening the interval S.

Then, the lower end portions of the four upper sling wires 1 are attached to the four corners of the upper PC floor slab 3, respectively, and the upper PC floor slab 3 is lifted, and then the lower PC floor slab 4 is mounted. In a state in which the longitudinal direction is relatively orthogonal to the upper PC floor slab 3, the lower end portions of the lower sling wires 2 are attached to the four corners of the lower PC floor slab 4, respectively. The lower PC floor slab 4 is also lifted.

At this time, since the interval S between the lower sling wire 2 and the upper PC floor slab 3 is set wide by the frame 5, even if the upper PC floor slab 3 swings in the width direction, P
The side end surface of the C floor slab 3 is prevented from interfering with the lower sling wire 2. 2 PC floor slabs, as described above
4 are hung up at the same time, hoisted to the target floor, and then attached between the lower PC floor slab 4 and the beam 7.

At this time, as shown in FIG. 4, the lower PC
Since the upper PC floor slab 3 is located between the pillars 6 when the floor slab 4 is attached, interference with the pillars 6 is avoided. Also,
As shown in FIG. 3, since the upper PC floor slab 3 is not directly above the worker B who is installing the lower PC floor slab 4, the PC floor suspended directly above the conventional PC floor slab 3 is not present. The need to work on the plate with care is reduced, and vertical work is safe.

After the installation of the lower PC floor slab 4 is completed, the lower sling wire 2 is removed from the lower PC floor slab 4 and the upper PC floor slab 3 is rotated 90 degrees to a predetermined position. Install between the beams 7.

[0017]

As described above, the PC of the present invention
The method of suspending the floor slab has an effect of preventing the upper PC floor from colliding with the pillar when the lower PC floor is attached.

[Brief description of drawings]

FIG. 1 is a perspective view showing suspension of a PC floor slab according to an embodiment of the present invention.

FIG. 2 is a side view showing suspension of a PC floor slab of an embodiment according to the present invention.

FIG. 3 is a plan view showing suspension of a PC floor slab of an embodiment according to the present invention.

FIG. 4 is a diagram showing a position of an upper PC floor slab when a lower PC floor slab is attached in an embodiment according to the present invention.

FIG. 5 is a perspective view showing suspension of a conventional PC floor slab.

[Explanation of symbols]

 1, 2 sling wire 3 Upper PC floor slab 4 Lower PC floor slab 5 Frame

Claims (2)

[Claims] 1. A method of simultaneously suspending two rectangular PC floor slabs vertically with a predetermined interval and facing each other with a sling wire so that the longitudinal directions of the two PC slabs are orthogonal to each other. A method of suspending a PC floor slab, characterized in that the PC slab is suspended in a state of being opposed to the above. 2. A sling wire for suspending an upper PC floor slab and a lower PC floor slab is separated from each other, and an interval between the wires is provided in the middle of the sling wire for suspending the lower PC floor slab. The method for suspending a PC floor slab according to claim 1, wherein a space between the wire and the side end surface of the upper PC floor slab is widened by interposing a spacer frame for holding the wire.