JP7240890B2 - Floor slab member loading method and floor slab member - Google Patents

Description

The present invention relates to a floor slab member loading method and a floor slab member.

2. Description of the Related Art Conventionally, a precast construction method is known in which a plurality of slabs such as floor members (floor slabs) are prepared in advance in a factory or the like, and the plurality of floor members are joined to each other on site. For example, Patent Literature 1 discloses a floor member provided with a notch portion that opens to a surface and one end face, and a joint reinforcing bar that protrudes from the other end face. A plurality of floor members are joined to each other by dropping the joining reinforcing bar of the other floor member into the other floor member.

JP 2009-68237 A

By the way, in the field of construction including the construction of structures, reduction of workload and improvement of work efficiency are desired, and the same is true for carrying in floor members as described above. However, any of the floor members disclosed in Patent Literature 1 above still requires guidance and assistance from workers when it is carried in, and further efficiency improvement is desired. Patent Literature 1 does not disclose any findings for reducing the intervention of auxiliary work when carrying in such floor members.

In view of the above problems, it is an object of at least one embodiment of the present invention to provide a floor slab member loading method capable of efficiently loading a floor slab member, and a floor slab member suitable for use in the method. do.

(1) A method for carrying in a floor slab member according to at least one embodiment of the present invention includes:
A floor slab member carrying-in method used when carrying a floor slab member into a predetermined position between beams of a structure, comprising:
The floor slab member
a rectangular floor slab body having a pair of short sides and a pair of long sides;
A one-side short-side guide portion provided in the vicinity of one of the pair of short sides on the lower surface of the floor slab body and extending in a direction intersecting with the one-side short side. and a one-side short-side guide portion having a tapered surface whose separation distance from the lower surface increases as the distance from the one-side short side increases;
A second short side guide portion provided in the vicinity of the other short side of the pair of short sides on the lower surface of the floor slab body and extending in a direction intersecting the other short side. and the other short side guide portion having a tapered surface whose separation distance from the lower surface increases as the distance from the other short side increases;
including
The method for carrying in the floor slab member is
The floor slab member is lifted above the predetermined position by a lifting device, and at least one of the tapered surface of the one-side short-side guide portion and the tapered surface of the other-side short-side guide portion is placed on the structure. A vertical movement step is provided for moving the floor slab member downward while contacting the beam.

According to the above method (1), if the horizontal position or orientation of the floor slab member lifted above the predetermined position is deviated from the predetermined position where the floor slab member should be placed. Even so, the floor slab member is lowered by a simple operation of lowering the floor slab member so that the short side guide portion on one side and the short side guide portion on the other side are accommodated between the two beams by the lifting device. At least one of the horizontal position and orientation of the plate member can be corrected. Therefore, it is possible to provide a floor slab member carrying-in method capable of carrying in the floor slab member efficiently.

(2) In some embodiments, in the method described in (1) above,
The one-side short side guide portion extends so that the distance from the one-side long side of the pair of long sides on the bottom surface of the floor slab body decreases as the distance from the one-side short side increases,
The other short side guide portion may be configured to extend so that the distance from the one long side of the lower surface of the floor slab main body becomes closer as the distance from the other short side increases.

According to the above method (2), for example, when the floor slab member is horizontally lifted toward a predetermined position with the lower end of the tapered surface arranged at a position lower than the upper surface of the beam, one side The tapered surfaces of the short-side guide portion and the other-side short-side guide portion do not come into contact with the beam in such a manner as to protrude toward the direction of travel. In other words, it is possible to reduce the slip resistance between the beam and the guide portion when the floor slab member is moved toward a predetermined position with each guide portion in contact with the beam. The plate member can be moved horizontally easily and smoothly.

(3) In some embodiments, in the method described in (1) or (2) above,
L is the distance along the longitudinal direction between the lower end of the tapered surface of the one-side short-side guide portion and the lower end of the tapered surface of the other-side short-side guide portion, and the tapered surface of the one-side short-side guide portion L1 is the interval along the longitudinal direction between the upper end and the upper end of the tapered surface of the other short side guide portion, L2 is the interval along the horizontal direction between the beams, and L2 is the interval along the longitudinal direction of the floor slab body When the length is defined as L3, the following formula (i) may be satisfied.
L<L1<L2<L3 (i)

According to the method (3) above, the one side short side guide portion and the other side short side guide portion, which are spaced apart from each other on the short sides of one floor slab member, are spaced apart from each other by the distance between the upper ends of the respective tapered surfaces. L1 is smaller than the interval L2 between the two beams, and the interval L between the lower ends of the tapered surfaces is smaller than L1. Since the height L3 is larger than the distance L2 between the two beams, the horizontal position of the floor slab member lifted above the predetermined position where the floor slab member is to be arranged, or Even if the orientation is misaligned, the horizontal position or orientation of the floor slab member can be adjusted by a simple operation of lowering the floor slab member so that each guide portion is placed between the two beams. can be corrected.

(4) In some embodiments, in the method of any one of (1) to (3) above,
The floor slab member
A one-side long-side guide portion provided in the vicinity of one long side of the pair of long sides on the lower surface of the floor slab body and extending in a direction intersecting with the one-side long side and a first floor slab member further including a one-side long side guide portion having a tapered surface whose separation distance from the lower surface increases as the distance from the one-side long side increases,
In the vertical movement step, the first floor slab member may be moved downward by a lifting device while bringing the tapered surface of the one-side long-side guide portion into contact with the beam of the structure.

According to the above method (4), the taper extends in the vicinity of one long side in a direction crossing the one long side, and the distance from the lower surface increases as the distance from the one long side increases. A lifting device is used by moving the first floor slab member downward while bringing the tapered surface of the one-side long-side guide portion into contact with the beam of the structure. Therefore, the floor slab member can be carried into a predetermined position so that one long side is aligned with the beam with high accuracy.

(5) In some embodiments, in the method of (4) above,
The one side long side guide part is
the tapered surface;
a horizontal surface connected to the upper side of the tapered surface and extending along a direction away from the one long side;
a vertical surface connected to the side of the horizontal surface opposite to the tapered surface and extending in the vertical direction toward the lower surface of the floor slab body;
may contain

According to the above method (5), for example, when one long side of the floor slab member is placed on a beam having a flange portion at the upper end, that is, a plurality of floor slabs arranged side by side so that the long sides are adjacent to each other When arranging the first floor slab member closest to the beam among the floor slab members in (1), the horizontal surface of the one-side long side guide part enters below the flange part of the beam. Since the floor slab member can be guided to a predetermined position, one long side of the floor slab member can be placed on the beam while securing a sufficient width from the outer edge.

(6) In some embodiments, in the method described in (4) or (5) above,
The first floor slab member is
The other side tapered end surface formed on the end surface of the other long side of the floor slab main body, and the distance from the one long side of the upper surface of the floor slab main body as it goes from the lower surface to the upper surface of the floor slab main body including the tapered end face on the other side where
The floor slab member
A second floor slab member arranged adjacent to the first floor slab member, the one facing the end surface of the other long side of the first floor slab member in the floor slab body One side tapered end face formed on the end face of the side long side, and the other side long side of the floor slab body of the second floor slab member on the top face of the floor slab body as it goes from the bottom face to the top face of the floor slab body further including a second floor slab member including one side tapered end face with an increasing distance of
In the vertical movement step, a lifting device moves the second floor slab member while bringing the one side tapered end surface of the second floor slab member into contact with the other side tapered end surface of the first floor slab member. can be moved downwards.

According to the above method (6), after the first floor slab member is carried into the predetermined position, when the second floor slab member is carried in, the lifting device lifts the second floor slab member from one side of the second floor slab member. The horizontal position or orientation of the second floor slab member is corrected by lowering the short side guide portion and the other side short side guide portion while contacting the beam of the structure, and a lifting device is used to , the one-side tapered end surface of the second floor slab member can be brought into a predetermined position while contacting the other-side tapered end surface of the first floor slab member. Therefore, the work of placing the second floor slab member next to the first floor slab member carried in earlier with high precision can be replaced by a simple operation of lowering the second floor slab member using a lifting device. can be realized by

(7) A floor slab member according to at least one embodiment of the present invention,
A floor slab member carried into a predetermined position between beams of a structure,
a rectangular floor slab body having a pair of short sides and a pair of long sides;
A one-side short-side guide portion provided in the vicinity of one of the pair of short sides on the lower surface of the floor slab body and extending in a direction intersecting with the one-side short side. and a one-side short-side guide portion having a tapered surface whose separation distance from the lower surface increases as the distance from the one-side short side increases;
A second short side guide portion provided in the vicinity of the other short side of the pair of short sides on the lower surface of the floor slab body and extending in a direction intersecting the other short side. and the other short side guide portion having a tapered surface whose separation distance from the lower surface increases as the distance from the other short side increases;
including.

According to the configuration (7) above, as described in (1) above, with respect to a predetermined position where the floor slab member should be placed, the floor slab member temporarily lifted above the predetermined position is placed horizontally. Even if the direction position or orientation is misaligned, the floor slab member is lowered by the lifting device so that the one side short side guide portion and the other side short side guide portion are accommodated between the two beams. The horizontal position or orientation of the floor slab member can be corrected by a simple operation of turning it on. Therefore, it is possible to provide a floor slab member that can be easily carried into a predetermined position by a lifting device and that is suitable for use in automatic erection.

(8) In some embodiments, in the configuration described in (7) above,
Each of the one-side short-side guide portion and the other-side short-side guide portion may be configured separately from the floor slab main body and may be detachably provided with respect to the floor slab main body.

According to the configuration (8) above, the one-side short-side guide portion and the other-side short-side guide portion are removed from the floor slab member that has already been carried into the predetermined position of the structure, and attached to the newly carried floor slab member. Can be reused.

According to at least one embodiment of the present invention, it is possible to provide a floor slab member carrying-in method capable of efficiently carrying in a floor slab member, and a floor slab member suitable for use in the method.

1 is a schematic diagram showing the periphery of a structure to which a floor slab member carrying-in method according to at least one embodiment of the present invention is applied; FIG. FIG. 4 is a plan view showing a loading situation of floor slab members in one embodiment. It is a bottom perspective view showing a configuration example of a floor slab member in one embodiment. 4 is a flow chart showing a method of carrying in a floor slab member according to one embodiment. FIG. 4 is a diagram showing a method of carrying in a floor slab member according to one embodiment, in which (A) shows a state in which the floor slab member is arranged above a predetermined position, and (B) shows the floor slab while one tapered surface is in contact with the beam. (C) shows a state in which the tapered surfaces of both short side guide portions are lowered between the beams, and (D) shows a state in which the floor slab member is placed at a predetermined position. It is a perspective view showing an example of composition of a floor board member in one embodiment. It is a top view which shows the structure (modification) of the floor slab member in one Embodiment. FIG. 4A is a diagram showing a method of loading a floor slab member using the one-side long-side guide portion in one embodiment, where (A) is a state in which the floor slab member is lowered along the tapered surface, and (B) is the tapered surface. (C) shows a state in which the floor slab member is horizontally moved toward a predetermined position along the horizontal plane. FIG. 4 is a side cross-sectional view showing a configuration example of a floor slab member in some embodiments; FIG. 11 is a perspective view showing a configuration example of a guide member in another embodiment;

Several embodiments of the present invention will now be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of the components described as embodiments or shown in the drawings are not intended to limit the scope of the present invention, and are merely illustrative examples. do not have.
For example, expressions denoting relative or absolute arrangements such as "in a direction", "along a direction", "parallel", "perpendicular", "center", "concentric" or "coaxial" are strictly not only represents such an arrangement, but also represents a state of relative displacement with a tolerance or an angle or distance to the extent that the same function can be obtained.
For example, expressions such as "identical", "equal", and "homogeneous", which express that things are in the same state, not only express the state of being strictly equal, but also have tolerances or differences to the extent that the same function can be obtained. It shall also represent the existing state.
For example, expressions that express shapes such as squares and cylinders do not only represent shapes such as squares and cylinders in a geometrically strict sense, but also include irregularities and chamfers to the extent that the same effect can be obtained. The shape including the part etc. shall also be represented.
On the other hand, the expressions "comprising", "comprising", "having", "including", or "having" one component are not exclusive expressions excluding the presence of other components.

FIG. 1 is a schematic diagram showing the periphery of a structure to which a floor slab member carrying-in method according to at least one embodiment of the present invention is applied. FIG. 2 is a plan view showing how the floor slab member is carried in according to one embodiment. FIG. 3 is a bottom perspective view showing a configuration example of a floor slab member according to one embodiment. FIG. 4 is a flow chart showing a method of loading a floor slab member according to one embodiment.
As illustrated in FIGS. 1 to 3, a floor slab member carrying-in method according to at least one embodiment of the present invention carries a floor slab member 10 (horizontal member) to a predetermined position between beams 2 of a structure 1. It is a method of carrying in the floor slab member 10 used in the case. In this method, the floor slab member 10 is composed of a rectangular floor slab body 11 having a pair of short sides 16 and a pair of long sides 17, and one of the pair of short sides 16 on the bottom surface 12 of the floor slab body 11. One side short side guide portion 31 provided near the side short side 16A, and the other side short side provided near the other side short side 16B of the pair of short sides 16 on the lower surface 12 of the floor slab body 11 A guide portion 32 is provided.
In the present disclosure, the predetermined position means the position and orientation at which the floor slab member 10 should be arranged, and the parallel to the predetermined position means the position and orientation at which the floor slab member 10 should be arranged. It shall mean at least the case where the orientations match.

The floor slab main body 11 is, for example, preformed at a factory or the like so as to have desired dimensions in the longitudinal direction, the lateral direction and the thickness direction, and is transported to the site. Such a floor slab main body 11 may have, for example, a plurality of reinforcing bars arranged therein along the longitudinal direction and/or the lateral direction.

As shown in FIGS. 2 and 3, the one-side short side guide portion 31 extends in a direction intersecting the one-side short side 16A and separates from the bottom surface 12 as it goes away from the one-side short side 16A. It has a tapered surface 35 that increases the distance. That is, the tapered surface 35 is provided so as to face the horizontal outer side and obliquely downward direction of the floor slab main body 11 .
The one-side short side guide portion 31 may be provided, for example, along a direction perpendicular to the one-side short side 16A (longitudinal direction of the floor slab body 11). In addition, the one-side short-side guide portion 31 is provided, for example, on one of the two opposing beams 2 (for example, also referred to as a first beam or a horizontal beam) spanning the pillar 3, in the floor slab main body 11. It may be provided at a predetermined distance from the one short side 16A (outer edge 14) so as to be locked up to a predetermined distance from the one short side 16A (outer edge 14).

For example, as shown in FIGS. 2 and 3, the other short side guide portion 32 extends in a direction intersecting the other short side 16B and separates from the bottom surface 12 as it goes away from the other short side 16B. It has a tapered surface 35 that increases the distance. That is, the tapered surface 35 is provided so as to face the horizontal outer side and obliquely downward direction of the floor slab main body 11 .
Like the one short side guide portion 31, the other short side guide portion 32 may be provided, for example, along a direction perpendicular to the other short side 16B (longitudinal direction of the floor slab body 11). However, it may be provided at a predetermined distance from the other short side 16A.

As described above, the floor slab member 10 in some embodiments of the present disclosure includes a plurality of guide portions provided at a predetermined distance from the outer edge 14 of the floor slab body 11 at the peripheral edge of the lower surface 12 of the floor slab body 11 . 30 (including one-side short-side guide portion 31, the other-side short-side guide portion 32, and one-side long-side guide portion 33, which will be described later). Of these, the one side short side guide portion 31 and the other side short side guide portion 32 are arranged apart from each other by a predetermined distance in the longitudinal direction of the floor slab body 11 . At least one short side guide portion 31 and one short side guide portion 32 are provided. A plurality of one or more may be provided. When two or more short side guide portions are provided on one of the short sides 16 (one short side 16A or the other short side 16B), the short side guide portions are spaced apart in the short side direction of the floor slab body 11. Alternatively, each short side guide portion may be arranged at the same distance from the outer edge 14 of the floor slab body 11 .
The tapered surface 35 of the guide portion 30 may be planar, or curved obliquely downward from the floor slab body 11 . It may have a curved surface that is concave downward.

The floor slab member carrying-in method is such that the floor slab member 10 is lifted up to a predetermined position above the floor slab member 5 and the tapered surface 35 of the short side guide portion 31 on one side and the short side guide portion 32 on the other side are lifted. A vertical movement step S10 is provided for moving the floor slab member 10 downward while at least one of the tapered surfaces 35 is in contact with the beam 2 of the structure 1 (see FIG. 4).
Here, the vertical movement step S10 will be described in detail.
5A and 5B are diagrams showing a method of carrying in the floor slab member according to one embodiment. FIG. 5A shows a state in which the floor slab member is placed above a predetermined position, and FIG. (C) shows a state where the tapered surfaces of both short side guide portions are lowered between the beams, and (D) shows a state where the floor slab member is placed at a predetermined position.
As illustrated in FIG. 5, in the vertical movement step S10, the floor slab member 10 (see FIG. 5A) lifted upward between the two beams 2 arranged oppositely by the lifting device 5, for example. Between the two beams 2, one side short side guide portion 31 and the other side short side guide portion 32 (more specifically, lower ends 35A, 35A of tapered surfaces 35 of both short side guide portions 31, 32) are The floor slab member 10 is lowered vertically by the lifting device 5 so as to be accommodated.
Then, one of the tapered surfaces 35 comes into contact with the upper edge of the beam 2 (see FIG. 5(B)). The guided floor slab member 10 moves downward (diagonally downward) while moving horizontally (mainly in the longitudinal direction of the floor slab member 10). At that time, for example, when two or more guide portions 30 are arranged on one of the short sides 16, the floor slab member 10 is further lowered by the lifting device 5 so that the two guide portions 30 arranged on one of the short sides 16 The floor slab member 10 turns in the horizontal plane until the tapered surface 35 of the guide portion 30 contacts the upper edge of the beam 2 . In this way, the orientation of the floor slab member 10 in the horizontal direction is corrected, and the floor slab member 10 is arranged parallel to the predetermined position (see FIG. 5(C)). After that, the floor slab member 10 is further lowered by the lifting device 5 so that the horizontal position (mainly the longitudinal position) of the floor slab member 10 is corrected, and the floor slab member 10 is carried into a predetermined position (FIG. 5(D)). reference).

According to the above-described method, even if the horizontal position or orientation of the floor slab member 10 lifted above the predetermined position deviates from the predetermined position where the floor slab member 10 should be placed. Even if there is, it is simple to lower the floor slab member 10 so that the one side short side guide portion 31 and the other side short side guide portion 32 are accommodated between the two beams 2 by the lifting device 5. The movement can correct the horizontal position (mainly the longitudinal position of the floor slab member 10) or orientation of the floor slab member 10. FIG. Therefore, it is possible to provide a floor slab member carrying-in method capable of carrying in the floor slab member 10 efficiently.

By using such a method, the floor slab member 10 can be easily carried into a predetermined position by the lifting device 5. Therefore, the above method is a method of carrying in the floor slab member suitable for use in automatic erection. It can be said. In addition, automatic erection involves various machines including a lifting device 5 such as a crane when assembling the main structural members of the structure 1 (including, for example, the columns 3, the beams 2, or the floor slab members 10) on site. It is to automate construction by cooperating with robots, various sensors, measuring instruments, control devices, etc., thereby significantly reducing the workload and improving work efficiency.

Next, FIG. 6 shows a configuration example of a floor slab member in one embodiment.
As illustrated in FIGS. 2 and 6, in some embodiments, in the method described in the above-described embodiments, for example, the lower end 35A (lower side) of the tapered surface 35 of the short side guide portion 31 on one side and the short side on the other side are separated from each other. The distance along the longitudinal direction between the lower end 35A of the tapered surface 35 of the side guide portion 32 and the upper end 35B of the tapered surface 35 of the short side guide portion 31 on one side and the upper end of the tapered surface 35 of the short side guide portion 32 on the other side are L. 35B along the longitudinal direction is defined as L1, the horizontal distance between the two beams 2 facing each other is defined as L2, and the length along the longitudinal direction of the floor slab main body 11 is defined as L3. , may satisfy the following equation (i).
L<L1<L2<L3 (i)

In this way, the one side short side guide portion 31 and the other side short side guide portion 32, which are spaced apart from each other on the short sides 16 of one floor slab member 10, are arranged such that the upper ends 35B of the respective tapered surfaces 35 are aligned with each other. is smaller than the interval L2 between the two beams 2, and the interval L between the lower ends 35A of the tapered surfaces 35 is smaller than L1. Since the length L3 along the longitudinal direction is larger than the interval L2 between the two beams 2, the floor lifted above the predetermined position where the floor slab member 10 should be provisionally arranged Even if the horizontal position or orientation of the slab member 10 is deviated, a simple operation of lowering the floor slab member 10 so that each guide portion 30 is accommodated between the two beams 2 is sufficient. , the horizontal position or orientation of the floor slab member 10 can be corrected.
In addition, in the method of carrying in the floor slab member 10 provided with the guide part 30 of the present disclosure by the lifting device 5, the floor slab member 10 is lifted above a predetermined position in the horizontal direction (longitudinal direction) from the predetermined position. direction), for example, an error of L2-L or L1-L can be absorbed. That is, even if there is an error of L2-L or L1-L in the longitudinal direction when the floor slab member 10 is lifted above a predetermined position, the floor slab member 10 can be vertically lowered by the lifting device 5. The floor slab member 10 can be arranged at a predetermined position.

FIG. 7 is a plan view showing the configuration (modification) of the floor slab member in one embodiment.
In some embodiments, in the above-described method, as illustrated in FIG. 7, the one-side short-side guide portion 31 is arranged to extend along the pair of long sides on the lower surface 12 of the floor slab body 11 as it moves away from the one-side short side 16A. The other short side guide portion 32 extends so as to become closer to the one long side 17A of the floor slab body 17, and the other short side guide portion 32 moves away from the other short side 16B. may be configured to extend so that the distance from the

That is, at least one of the one side short side guide portion 31 and the other side short side guide portion 32 forms an angle θ with the short side 16 close to each on the downstream side in the horizontal movement direction of the floor slab member 10 toward the predetermined position. may be inclined with respect to the short side 16 so that the angle is acute when viewed from above.
In this case, the angle θ formed by each short side guide portion and the short side 16 in contact with the short side guide portion on the downstream side in the horizontal movement direction of the floor slab member 10 toward the predetermined position is, for example, 0°<θ< It may be set to 90°, may be set to 30°<θ<60°, or may be set to 45°.

In this way, if the angle θ formed by the short side guide portion and the short side 16 in a plan view is made an acute angle downstream in the horizontal movement direction toward a predetermined position, for example, the lower end 35A of the tapered surface 35 will be the beam 2. When the floor slab member 10 is horizontally lifted toward a predetermined position in a state lower than the upper surface 21A, the tapered surfaces of the one-side short-side guide portion 31 and the other-side short-side guide portion 32 35 does not abut on the beam 2 in such a state as to protrude toward the traveling direction side. That is, when the floor slab member 10 is moved toward a predetermined position with the guide portions 30 (including the one-side short-side guide portion 31 and the other-side short-side guide portion 32) arranged between the beams 2, the beams 2 and the guide portion 30 can be reduced, the floor slab member 10 can be moved horizontally with respect to the beam 2 easily and smoothly.

In some embodiments, in the method according to any one of the above embodiments, the floor slab member 10 has a pair of long sides on the bottom surface 12 of the floor slab body 11, as illustrated in FIGS. 2 and 7, for example. A one-side long side guide portion 33 provided in the vicinity of the one-side long side 17A of 17, extending in a direction intersecting the one-side long side 17A and moving away from the one-side long side 17A. The first floor slab member 10A further includes a one-side long-side guide portion 33 having a tapered surface 35 whose distance from the lower surface 12 increases as the distance increases. The first floor slab member 10A may be moved downward while the tapered surface 35 of the long-side guide portion 33 is in contact with the beam 2 of the structure 1 .

For example, the one-side long-side guide portion 33 may be arranged at the periphery of the lower surface 12 of the floor slab member 10 at a predetermined distance from the outer edge 14 of the floor slab body 11 . Two or more (plurality) of the one-side long-side guide portions 33 may be provided. When two or more one-side long-side guide portions 33 are provided, each one-side long-side guide portion 33 may be spaced apart in the longitudinal direction of the floor slab body 11, and each one-side long-side guide portion 33 may be placed at the same distance from the outer edge 14 of the floor slab body 11 .
The tapered surface 35 of the one-side long-side guide portion 33 is provided so as to face the horizontal outer side and diagonally downward of the floor slab body 11 . Such a tapered surface 35 may be planar, may be curved obliquely downward from the floor slab main body 11 , or may be curved obliquely downward from the floor slab main body 11 . It may have a concave curved surface.

Thus, the tapered surface 35 extends in the vicinity of the one long side 17A in a direction crossing the one long side 17A, and the distance from the lower surface 12 increases as the distance from the one long side 17A increases. By moving the first floor slab member 10A downward while bringing the tapered surface 35 of the one-side long-side guide portion 33 into contact with the beam 2 of the structure 1, Using the lifting device 5, the beams 2 (for example, the second The floor slab member 10 can be brought into a predetermined position along the beams or longitudinal beams) with high precision.

8A and 8B are diagrams showing a method of loading the floor slab member using the one-side long-side guide portion in one embodiment, in which (A) shows a state in which the floor slab member is lowered along the tapered surface, and (B). (C) shows a state in which the floor slab member is horizontally moved toward a predetermined position along the horizontal plane.
In some embodiments, in any of the above methods, the one-side long-side guide portion 33 has a tapered surface 35 and a tapered A horizontal surface 37 connected to the upper end 35B (upper edge) of the surface 35 and extending along the direction away from the one long side 17A, and a side edge of the horizontal surface 37 opposite to the tapered surface 35 and connected to the floor slab body and a vertical surface 36 extending vertically toward the lower surface 12 of 11 . That is, the one-side long-side guide portion 33 may have a hook shape including the tapered surface 35 , the horizontal surface 37 and the vertical surface 36 .
Such one-side long-side guide portion 33 includes, for example, flange portions 21, 21 in which beam 2 (second beam) has a longitudinal direction and is arranged to face up and down, and both flange portions 21, 21. It can be said that it is suitable for use in the case of being configured using so-called H-section steel provided with the connecting web portion 22 .
In addition, the length along the vertical direction of the vertical surface 36 may be equal to or greater than the thickness of the flange portion 21 . Furthermore, the length of the vertical surface 36 along the vertical direction is, for example, the depth of the recess 40 formed in the other long side 17B of the upper surface 13 of the first floor slab member 10A or the second floor slab member 10B, which will be described later. may be set according to

Then, in the vertical movement step S10, for example, the lifting device 5 lifts two beams 2 above the two beams 2 arranged opposite each other so as to intersect or perpendicularly cross the two beams 2, respectively. The first floor slab member 10A lifted in the vicinity of the beam 2 (second beam) along the longitudinal direction spanned between the pillars 3 of the book is placed between the two beams 2 arranged facing each other. The floor slab member 10 is lowered vertically by the lifting device 5 so that the one-side long-side guide portion 33 (more specifically, the lower end 35A of the tapered surface 35 of the one-side long-side guide portion 33) is accommodated therebetween.
Then, the tapered surface 35 comes into contact with the upper edge of the beam 2 (see FIG. 8A). 10 moves obliquely downward while moving horizontally. By further lowering the floor slab member 10 by the lifting device 5, the horizontal surface 37 is arranged at a position lower than the lower surface of the upper flange portion 21 (see FIG. 8B). Thereafter, the floor slab member 10 is horizontally moved toward the beam 2 (second beam) by the lifting device 5, and the floor slab member 10 is carried into a predetermined position (see FIG. 8(C)).

In this way, if the one-side long side guide portion 33 is formed in a hook shape, for example, when one long side 17 of the floor slab member 10 is arranged on the beam 2 having the flange portion 21 at the upper end 35B. That is, when arranging the first floor slab member 10A, which is arranged closest to the beam 2 among the plurality of floor slab members 10 arranged side by side so that the long sides 17 are adjacent to each other, at a predetermined position, Since the floor slab member 10 can be guided to a predetermined position by making the horizontal surface 37 of the one-side long-side guide portion 33 enter below the flange portion 21 of the beam 2, a sufficient width from the outer edge 14 can be secured to the floor. One long side 17A of the plate member 10 can be placed on the beam 2 .

FIG. 9 is a side cross-sectional view showing a configuration example of a floor slab member in some embodiments.
In some embodiments, in any of the above methods, the first floor slab member 10A is formed on the other side long side 17B side of the floor slab body 11, for example, as illustrated in FIG. Even if the tapered end surface 19 includes the tapered end surface 19 on the other side, the distance from the one long side 17A of the upper surface 13 of the floor slab body 11 decreases as it goes from the lower surface 12 to the upper surface 13 of the floor slab body 11. good. Such a tapered end surface 19 on the other side is a tapered surface provided to face the long side 17B on the other side of the floor slab body 11 obliquely upward.
Further, the floor slab member 10 is a second floor slab member 10B arranged adjacent to the first floor slab member 10A, and the other long side of the first floor slab member 10A in the floor slab body 11 One side tapered end face 18 formed on the end face on the one long side 17A side facing the end face on the 17B side, and the floor of the second floor slab member 10B is tapered from the lower face 12 toward the upper face 13 of the floor slab body 11. A second floor slab member 10B including a one-side tapered end surface 18 having a larger distance from the other-side long side 17B on the upper surface 13 of the plate body 11 may be further included. In this case, the one-side tapered end surface 18 is a tapered surface provided to face the one-side long side 17A of the floor slab body 11 obliquely downward. When the first floor slab member 10A and the second floor slab member 10B are arranged so as to contact each other, the one side tapered end face 18 and the other side tapered end face 19 are The upper surfaces 13 of the second floor slab members 10B may be formed so as to be parallel or flush with each other.
Then, in the vertical movement step S10, the lifting device 5 moves the second floor slab while bringing the one side tapered end surface 18 of the second floor slab member 10B into contact with the other side tapered end surface 19 of the first floor slab member 10A. The plate member 10B may be moved downward.

According to this method, after the first floor slab member 10A is carried into the predetermined position, when the second floor slab member 10B is carried in, the lifting device 5 lifts the second floor slab member 10B. The horizontal position or orientation of the second floor slab member 10B is corrected by lowering the one-side short-side guide portion 31 and the other-side short-side guide portion 32 while contacting the beams 2 of the structure 1, and Using the lifting device 5, the second floor slab member 10B can be brought into a predetermined position while the one side tapered end face 18 of the second floor slab member 10B is in contact with the other side tapered end face 19 of the first floor slab member 10A. Therefore, the operation of placing the second floor slab member 10B next to the first floor slab member 10A carried in earlier with high accuracy is performed by lowering the second floor slab member 10B using the lifting device 5. It can be realized by a simple operation.

Next, a floor slab member according to at least one embodiment of the present invention will be described.
A floor slab member 10 according to at least one embodiment of the present invention includes the configuration of the floor slab member 10 described in the above several embodiments, and is carried into a predetermined position between the beams 2 of the structure 1. The floor slab member 10 is a rectangular floor slab body 11 having a pair of short sides 16 and a pair of long sides 17, and one side of the pair of short sides 16 on the bottom surface 12 of the floor slab body 11. A one-side short-side guide portion 31 provided in the vicinity of the short side 16A, extending in a direction intersecting the one-side short side 16A, and separating from the bottom surface 12 as it goes away from the one-side short side 16A. One short side guide portion 31 having a tapered surface 35 that increases the distance, and the other short side guide provided near the other short side 16B of the pair of short sides 16 on the lower surface 12 of the floor slab body 11. The other short side guide portion 32 has a tapered surface 35 extending in a direction intersecting the other short side 16B and having a tapered surface 35 whose distance from the lower surface 12 increases with distance from the other short side 16B. 32 and .

Thus, according to the configuration in which the floor slab member 10 includes the one-side short-side guide portion 31 and the other-side short-side guide portion 32, the floor slab member 10 can be placed at a predetermined position. Even if the horizontal position or orientation of the floor slab member 10 lifted above the predetermined position is deviated, the lifting device 5 moves the one side short side guide portion 31 and the other side short side guide portion. The horizontal position or orientation of the floor slab member 10 can be corrected by a simple operation of lowering the floor slab member 10 so that the floor slab member 10 is placed between the two beams 2 . Therefore, it is possible to provide the floor slab member 10 which can be easily carried into a predetermined position by the lifting device 5 and which is suitable for use in automatic erection.

FIG. 10 is a perspective view showing a configuration example of a guide member in another embodiment.
In some embodiments, in the configuration described in any of the above embodiments, for example, the one-side short-side guide portion 31 and the other-side short-side guide portion 32 are configured separately from the floor slab main body 11. In addition, it may be provided detachably with respect to the floor slab main body 11 .
In this case, each guide part is detachably attached to the lower surface 12 of the floor slab main body 11 by means of connecting means such as bolt connection, welding, or adhesive.
In addition to the one-side short-side guide portion 31 and the other-side short-side guide portion 32, other guide portions including the one-side long-side guide portion 33 described above may be detachably attached to the lower surface 12 of the floor slab body 11. good.

In this way, according to the configuration in which the guide portion 30 is detachable from the floor slab main body 11, from the floor slab member 10 that has already been carried into a predetermined position of the structure 1, the short side guide portion 31 on one side and the guide portion 31 on the other side The short-side guide portion 32 can be removed and attached to a newly carried floor slab member 10 for reuse.

According to at least one embodiment of the present invention described above, it is possible to provide a floor slab member loading method capable of efficiently loading the floor slab member 10, and a floor slab member 10 suitable for use in the method. can.

The present invention is not limited to the above-described embodiments, and includes modifications of the above-described embodiments and combinations of these embodiments.
For example, the method of carrying in the floor slab member described above includes the step of attaching the guide portion 30 to the lower surface 12 of the floor slab member 10, and lifting the floor slab member 10 to which the guide portion 30 is attached to a predetermined height vertically upward. a step of horizontally moving the floor slab member 10 lifted to a predetermined height and arranging it above a predetermined position; a step of removing the guide part 30 from the floor slab member 10 carried into the predetermined position; may contain

1 structure 2 beam 3 pillar 5 lifting device (crane)
10 Floor slab member 10A First floor slab member (floor slab member)
10B Second floor slab member (floor slab member)
11 Floor slab main body 12 Lower surface 13 Upper surface 14 Outer edge 16 Short side 16A One side short side (short side)
16B other short side (short side)
17 long side 17A one side long side (long side)
17B other side long side (long side)
18 One side tapered end surface 19 Other side tapered end surface 21 Flange portion 21A Upper surface 22 Web portion 30 Guide portion 31 One side short side guide portion (guide portion)
32 other side short side guide portion (guide portion)
33 one side long side guide part (guide part)
35 Tapered surface 35A lower end (lower side)
35B upper end (upper side)
36 vertical surface 37 horizontal surface 40 concave portion

Claims (6)

A floor slab member carrying-in method used when carrying a floor slab member into a predetermined position between beams of a structure, comprising:
The floor slab member is
a rectangular floor slab body having a pair of short sides and a pair of long sides;
A one-side short-side guide portion provided in the vicinity of one of the pair of short sides on the lower surface of the floor slab body and extending in a direction intersecting with the one-side short side. and a one-side short-side guide portion having a tapered surface whose separation distance from the lower surface increases as the distance from the one-side short side increases;
A second short side guide portion provided in the vicinity of the other short side of the pair of short sides on the lower surface of the floor slab body and extending in a direction intersecting the other short side. and the other short side guide portion having a tapered surface whose separation distance from the lower surface increases as the distance from the other short side increases;
including
The method for carrying in the floor slab member is
The floor slab member is lifted above the predetermined position by a lifting device, and at least one of the tapered surface of the one-side short-side guide portion and the tapered surface of the other-side short-side guide portion is placed on the structure. a vertical movement step for moving the floor slab member downward while contacting the beam ;
The one-side short side guide portion extends so that the distance from the one-side long side of the pair of long sides on the bottom surface of the floor slab body decreases as the distance from the one-side short side increases,
The other short side guide portion is configured to extend so that the distance from the one long side of the lower surface of the floor slab main body decreases as the distance from the other short side increases.
How to carry in floor slab members. A floor slab member carrying-in method used when carrying a floor slab member into a predetermined position between beams of a structure, comprising:
The floor slab member
a rectangular floor slab body having a pair of short sides and a pair of long sides;
A one-side short-side guide portion provided in the vicinity of one of the pair of short sides on the lower surface of the floor slab body and extending in a direction intersecting with the one-side short side. and a one-side short-side guide portion having a tapered surface whose separation distance from the lower surface increases as the distance from the one-side short side increases;
A second short side guide portion provided in the vicinity of the other short side of the pair of short sides on the lower surface of the floor slab body and extending in a direction intersecting the other short side. and the other short side guide portion having a tapered surface whose separation distance from the lower surface increases as the distance from the other short side increases;
including
The method for carrying in the floor slab member is
The floor slab member is lifted above the predetermined position by a lifting device, and at least one of the tapered surface of the one-side short-side guide portion and the tapered surface of the other-side short-side guide portion is placed on the structure. a vertical movement step for moving the floor slab member downward while contacting the beam;
A distance along the longitudinal direction of the floor slab main body between the lower end of the tapered surface of the one-side short-side guide portion and the lower end of the tapered surface of the other-side short-side guide portion is L, and the one-side short-side guide portion L1 is the interval along the longitudinal direction between the upper end of the tapered surface of and the upper end of the tapered surface of the other short side guide portion, L2 is the interval along the horizontal direction between the beams, and the floor slab main body When the length along the longitudinal direction is defined as L3, the following formula (i) is satisfied
How to carry in floor slab members.
L<L1<L2<L3 (i) A floor slab member carrying-in method used when carrying a floor slab member into a predetermined position between beams of a structure, comprising:
The floor slab member is
a rectangular floor slab body having a pair of short sides and a pair of long sides;
A one-side short-side guide portion provided in the vicinity of one of the pair of short sides on the lower surface of the floor slab body and extending in a direction intersecting with the one-side short side. and a one-side short-side guide portion having a tapered surface whose separation distance from the lower surface increases as the distance from the one-side short side increases;
A second short side guide portion provided in the vicinity of the other short side of the pair of short sides on the lower surface of the floor slab body and extending in a direction intersecting the other short side. and the other short side guide portion having a tapered surface whose separation distance from the lower surface increases as the distance from the other short side increases;
including
The method for carrying in the floor slab member is
The floor slab member is lifted above the predetermined position by a lifting device, and at least one of the tapered surface of the one-side short-side guide portion and the tapered surface of the other-side short-side guide portion is placed on the structure. a vertical movement step for moving the floor slab member downward while contacting the beam;
The floor slab member is
A one-side long-side guide portion provided in the vicinity of one long side of the pair of long sides on the lower surface of the floor slab body and extending in a direction intersecting with the one-side long side and a first floor slab member further including a one-side long side guide portion having a tapered surface whose separation distance from the lower surface increases as the distance from the one-side long side increases,
In the vertical movement step, a lifting device moves the first floor slab member downward while bringing the tapered surface of the one-side long-side guide portion into contact with the beam of the structure.
How to carry in floor slab members. The one side long side guide part is
the tapered surface;
a horizontal surface connected to the upper side of the tapered surface and extending along a direction away from the one long side;
a vertical surface connected to the side of the horizontal surface opposite to the tapered surface and extending in the vertical direction toward the lower surface of the floor slab body;
The method for carrying in a floor slab member according to claim 3 . The first floor slab member is
The other side tapered end surface formed on the end surface of the other long side of the floor slab main body, and the distance from the one long side of the upper surface of the floor slab main body as it goes from the lower surface to the upper surface of the floor slab main body including the tapered end face on the other side where
The floor slab member
A second floor slab member arranged adjacent to the first floor slab member, the one facing the end surface of the other long side of the first floor slab member in the floor slab body One side tapered end face formed on the end face of the side long side, and the other side long side of the floor slab body of the second floor slab member on the top face of the floor slab body as it goes from the bottom face to the top face of the floor slab body further including a second floor slab member including one side tapered end face with an increasing distance of
In the vertical movement step, a lifting device moves the second floor slab member while bringing the one side tapered end surface of the second floor slab member into contact with the other side tapered end surface of the first floor slab member. 5. The method of carrying in a floor slab member according to claim 3 or 4 , wherein the is moved downward. A floor slab member carried into a predetermined position between beams of a structure,
a rectangular floor slab body having a pair of short sides and a pair of long sides;
A one-side short-side guide portion provided in the vicinity of one of the pair of short sides on the lower surface of the floor slab body and extending in a direction intersecting with the one-side short side. and a one-side short-side guide portion having a tapered surface whose separation distance from the lower surface increases as the distance from the one-side short side increases;
A second short side guide portion provided in the vicinity of the other short side of the pair of short sides on the lower surface of the floor slab body and extending in a direction intersecting the other short side. and the other short side guide portion having a tapered surface whose separation distance from the lower surface increases as the distance from the other short side increases;
including
The one-side short-side guide portion and the other-side short-side guide portion are configured separately from the floor slab main body, and are detachably provided with respect to the floor slab main body.
Floor slab member.

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