JP3283711B2 - Floating slab anchor device and method of manufacturing floating slab - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floating slab anchor device and a method for manufacturing a floating slab. More particularly, the present invention relates to a method of constructing a floating slab for reducing transmission of vibration to a skeleton slab in a concrete building or the like, and an anchor device used for the method.

[0002]

2. Description of the Related Art In a building, a condominium, or the like, since noise and vibration exerted on a floor structure on the upper floor are directly transmitted to a lower floor through a slab of a building, measures against noise and vibration are required. In particular, it is important to reduce noise in a room directly below a cooking room in a fitness club or hotel. In addition, in steel-frame buildings such as multi-story parking lots, the vibration of large lifts for moving cars and the vibrations generated in buildings when cars move may be transmitted to adjacent buildings through the ground. is there.
Conventionally, as noise and vibration countermeasures for such buildings and condominiums, laying glass wool or rock wool on the skeleton slab, laying wood chip cement boards as necessary, and placing mortar for floor slabs on it And so on.

[0003] However, even through such a glass wool layer, a rock wool layer, or a wood chip cement board, the structure is still the same as that in which solid vibration is transmitted from the floor slab to the building slab. Was inadequate.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a floor slab capable of effectively blocking a vibration transmission path between a floor structure and a building slab in a building or an apartment building. It is intended to provide.

[0005]

Thus, according to the invention of claim 1 of the present application, "the fixing plate (13A) fixed to the base (1) and the mounting plate (13A) mounted on the fixing plate (13A)". Elastic body (12)
A pressing body (10A) capable of compressing the elastic body (12), and an elastic body
(12) and an outer cylindrical body (6A) which accommodates the pressing body (10A) inside and can be supported by being separated from the fixing plate (13A) by the elastic body (12) via the pressing body (10A). And the pressing body (10A)
The outer cylinder (6A) is configured such that its outer surface is removably engaged with the inner surface of the outer cylinder (6A) and the engagement position can be fixed at a predetermined position, and the outer cylinder (6A) has a slab Bar arrangement (5)
Floating slab anchor device (A) "having a reinforcing bar mounting portion (7) that engages with the slab."

[0006] The anchor device for floating slab of the present invention (hereinafter referred to as the anchor device)
Elastic body (12) used for (A)
Is a simple structure, has a strength capable of withstanding a large load and a large compressive stress, and is preferably replaceable.Examples include, but are not limited to, compression springs and the like. There may be.

[0007] Pressing body used in the anchor device (A) of the present application
(10A) presses the elastic body (12) and an outer cylindrical body described later.
(6A) It is configured so that it can be fixed at a predetermined position on the inner surface. As an example of this configuration, for example, as shown in claim 3 of the present application, the pressing body (10A) and the inner surface of the outer cylindrical body (6A) may be screwed together. As shown in
The outer cylindrical body (6B) includes a convex portion (6b) formed at a position corresponding to a compression position on the inner surface, and a cutout portion formed so that the convex portion (6b) can be inserted into the pressing body (10B). It may be something.

[0008] The pressing body (10A) may be constituted by an integral body, but is preferably constituted by a combination part. As an example of the combination part, a configuration including an elastic body pressing portion (11a) for pressing the elastic body (12), a pressing body main body (10a), and an outer cylinder body engaging portion (14) can be given.
When the pressing body (10A) is composed of a combination part,
As shown in claim 2 of the present application, it is preferable that the distance between the elastic body pressing portion (11a) and the outer cylinder body engaging portion (14) can be adjusted to an arbitrary length. For example, the pressing body (10a) And outer cylinder engaging part
And (14).

Outer cylinder used for anchor device (A) of the present application
(6A) is configured such that it can engage with the pressing body (10A) on its inner surface and hold it at a predetermined position, and can engage with the slab reinforcement (5) on its outer surface. The reinforcing bar mounting portion (7) may be formed in an insertion hole (7a) through which reinforcing bars can be inserted, or may be formed in a notch for hooking the reinforcing bars,
In addition, a locking portion may be protruded. This outer cylinder (6A)
Is suitably configured to prevent intrusion of concrete material from between its lower end and the fixing plate (13A).
This can be solved by using (9). In addition, this outer cylinder (6
A) has an opening in its upper part, and the opening prevents the concrete material from entering the outer cylinder and presses the pressing body (10).
A) Canopy that can be detached to replace parts such as A) and elastic body (12)
(18) is preferably provided.

[0010] The present invention also provides a fixing plate (13C) fixed to the base (1), the fixing plate (13C),
(13C) an elastic body (12) placed on the same, a pressing body (10C) capable of compressing the elastic body (12), and an outer body capable of housing the elastic body (12) and the pressing body (10C) therein. Consisting of a cylindrical body (6C),
C) is detachably connected to the fixing plate (13C), and in the connected state, the elastic body (12) is fixed to the fixing plate (1
3C) and the pressing body (10C), and the outer cylindrical body (6C) has a slab reinforcing bar (5) on its outer surface.
Has a reinforcing arrangement mounting portion (7) which engages with the pressing member (10C) on the inner surface thereof when the pressing member (10C) is in a connected state, does not engage with the pressing member (10C), and when the connection is released. An engaging portion (6c) which can compress the elastic body (12) and engage with the pressing body (10C) so that the outer cylindrical body (6C) is separated from the fixed plate (12) and supported by the repulsive force.
Device for floating slabs configured to have
(C)] can be provided.

In the floating slab anchor device (C), the "over-compressed state" means a state in which the anchor slab is further compressed than a compressed state that supports a floating slab described later.

In the floating slab anchoring device (C), the engaging portion provided on the inner surface of the outer cylinder may be fixed in advance at a predetermined position. The structure which can be moved to and fixed at an arbitrary position in the vertical direction is preferable in that the compressive force of the elastic body can be adjusted. Examples of the structure that can be moved and fixed include a structure in which the engagement portion is a ring body and the outer surface thereof is screwed with the inner surface of the outer cylinder.

[0013] The present invention further provides the above anchor device (A), (B),
A method for manufacturing a floating slab using (C) can be provided. In other words, according to the invention of claim 6 of the present application, "a plurality of anchor devices (A) and (B) of the present invention are fixed on the base (1) at the positions of the respective fixing plates (13A) and the release material ( 3) is laid, and the reinforcing bar (5) is engaged with the reinforcing bar mounting portion (7) of the outer cylindrical body (6A), (6B) of each anchor device (A), (B), and the reinforcing bar is arranged. Frame (4) on the base to include the anchoring devices (A), (B) and reinforcing bars (5)
The concrete material for slab is poured into this frame (4), and after the concrete material hardens, each anchor device (A), (B)
The elastic body (12) is compressed by pressing the pressing bodies (10A) and (10B) of
(1) A method of manufacturing a floating slab to be separated from (1).

According to the invention of claim 7 of the present application, "a plurality of anchor devices (C) of the present invention are mounted on a base (1) by a fixing plate (13C) and a pressing body (10C) of each device. While maintaining the connection of the anchoring device, fix it at the position of each fixing plate (13C), lay the release material (3), and attach the reinforcing bar mounting portion (7) of the outer cylinder (6C) of each anchor device (C). ) With a reinforcing bar (5), and arrange the reinforcing bar.A frame (4) is formed on the base so as to include the anchor device (C) and the reinforcing bar, and a slab for the slab is provided in the frame (4). After placing concrete material and hardening the concrete material, the pressing body of each anchor device (C)
(10C) and the fixed plate (13C) are disconnected from each other to separate the hardened concrete body from the base (1).

In any of the methods of the present invention, the release material
(3) may be laid on the base before fixing the fixed plate, or may be laid after fixing the fixed plate. However, in the latter case, it is laid except for the fixed plate. In the case of a release coating, it is laid by application. Also, release material (3)
May be a vinyl sheet, a rock wool or a glass wool, or a paint as described above. Laying of the release material (3) may be a vinyl sheet alone, rock wool alone, glass wool alone or release paint alone, but a vinyl sheet may be laid on rock wool or glass wool or a release paint may be applied. . In this case, even if the upper vinyl sheet or paint layer breaks and concrete milk flows into the lower rock wool or glass wool side, it does not reach the base (1),
The floating slab (2) can be lifted from the base (1) by exfoliating rock wool and glass wool at the part where the concrete milk has penetrated.

In any of the methods of the present invention, the frame
(4) may be removed after the hardening of the concrete material,
It may be integrated with the hardened concrete as it is.

[0017]

According to the invention of claim 6 using the anchor device (A) according to claim 1 of the present application, the pressing body (10A) of each anchor device (A) is pressed after the concrete material is hardened. If it goes, each elastic body (12) is compressed, the compressive force accumulates with this, and the concrete hardened body is separated upward from the base (1) by the repulsive force and will be elastically supported .

An anchor device (A) according to the present invention "Claim 2"
According to the invention according to claim 6 of the present application, the pressing body (10A) of each anchor device (A) is provided with a distance between the elastic body pressing portion (11a) and the outer cylinder body engaging portion (14). Is configured to be adjustable to any length, so that the compression ratio can be adjusted, and thus the repulsion can be adjusted.

An anchor device (A) according to claim 3 of the present application.
According to the invention according to claim 6 of the present application, the engagement structure between the pressing body (10A) of each anchor device (A) and the inner surface of the outer cylindrical body (6A) is screwed. Adjustment of the degree of compression of (10A) and decompression can be easily performed.

The anchor device (B) according to the present invention (claim 4)
According to the invention according to claim 6 of the present application, the engagement structure between the pressing body (10B) of each anchor device (B) and the inner surface of the outer cylinder (6B) is formed on the inner surface of the outer cylinder (6B). (6)
b) and a notch formed in the pressing body (10B) and through which the convex portion (6b) can be inserted, so that the compression position is fixed, and the compression force of each anchor device (B) Can be made the same.

An anchor device (C) according to claim 5 of the present application.
According to the invention according to the present invention [Claim 7] using the pressing member (10) in each anchor device (C) after the hardening of the concrete material.
If the connection between (C) and the fixing plate (13C) is released, each elastic
When the (12) is released from the overcompressed state, each pressing body (10C) rises and the engaging portion (6C) on the inner surface of each outer cylinder (6C) is raised.
c), but since the position of each engaging portion (6c) is attached to a position that appropriately compresses each elastic body (12), the repulsion stored in each anchor device (C) The hardened concrete body is separated upward from the base (1) by the force and is elastically supported.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments, but the present invention is not limited thereto. Example 1 FIG. 1 is a perspective view showing an example of a floating slab manufactured by the method of the present invention, FIG. 2 is a schematic cross-sectional view of a main part at the time of placing concrete material in manufacturing a floating slab of the present invention, and FIG. FIG. 4 is a perspective view illustrating an example of a floating slab manufacturing method according to the present invention before casting concrete, FIG. 4 is a perspective view illustrating an example of a floating slab anchor device according to the present invention, and FIG. FIG. 6 is a schematic cross-sectional view illustrating an example of the floating slab anchor device of the present invention when installed, and FIG. 6 is a schematic cross-sectional view of a main part of the floating slab of the present invention.

First, an anchor device (A) for a floating slab according to an embodiment of the present invention will be described with reference to FIGS. The anchor device (A) includes a base seat (13A) fixed to the body slab (1), a compression spring (12) mounted on the base seat (13A), and the compression spring (12). Compressible pressure bolt body
(10A) and an outer cylinder body (6A) that houses the pressing bolt body (10A).
It is mainly composed of

The base seat (13A) is provided at a peripheral portion (not shown) through which an anchor bolt (17) buried in the slab (1) is inserted, and a mounting area for a compression spring (12) is provided at the center of the upper surface. And a protruding ring portion (13a) for accommodating this is formed.

The pressing bolt body (10A) is composed of a jack bolt body (10a) having a thread groove formed on the peripheral side surface of the main body, and a pressing spring seat rotatably mounted in the groove at the lower end of the bolt main body. (11a) and a pressing and fixing main nut (1) screwed to the jack bolt body (10a) and screwed to the inner surface of the outer cylinder (6A).
4). In addition, the tool fixing hole (14) for engaging the fastening tool is
a) is provided. Main nut for press fixing (14)
In this example, a lock nut (15a) is used to prevent loosening of the lock.

The outer cylindrical body (6A) has a plurality of reinforcing-arm engaging arms (7) integrally engaging with the slab reinforcing arrangement (5) on its outer peripheral surface. The above-mentioned pressing bolt body (10A)
Main nut (14) and lock nut (15a) for pressing and fixing
A screw groove is screwed into the screw groove. Each of the reinforcing arm (7) has a through hole (7a) through which the reinforcing bar (5) is inserted. An openable and closable canopy (18) is provided in the upper opening of the outer cylinder (6A). Further, in this example, the outer cylindrical body
At the lower end of (6A), an adapter (9) for closing a gap formed between the base (13A) and the base seat (13A) is provided.

Next, an example of a method of manufacturing a floating slab of the present invention using the above-described anchor device (A) will be described with reference to FIGS. First, the anchor device (A) is attached to each predetermined portion of the frame slab. That is, first, the base seat (13A) is inserted into the anchor bolt (17) planted at a predetermined portion of the frame slab, and is fixed with a nut. Next, a release material (for example, vinyl sheet, rock wool, glass wool, release paint, etc.) (3) is laid or applied by laying or coating except where each base seat (13A) is attached (see FIG. 4). The laying method may be vinyl sheet alone, rock wool alone, glass wool alone or release coating alone, but a vinyl sheet may be laid on rock wool or glass wool or release coating may be applied. (Of course, rock wool or glass wool may be used as the upper layer, and vinyl sheet or release coating may be used as the lower layer.) Floating slab (2) by peeling rock wool and glass wool at the part where concrete milk has penetrated without reaching the base (1) even if it flows in
Can be lifted from the base (1). Thereafter, the compression spring (12) is stored and mounted in the protruding ring portion (13a) of each base seat (13A), and the pressing bolt body (10A) adjusted to a position where the compression spring (12) is not pressed is placed here. ) Is covered with the outer cylinder (6A) and the adapter (9) (see FIG. 4). by this,
Installation of each anchor device (A) is completed

Next, the outer cylinder (6A) of each anchor device (A)
Each insertion hole (7a) of the reinforcing arm (7) projecting from
Then, the rebar (5) is inserted through the rebars to complete the rebar arrangement (see FIG. 3). Thereafter, a formwork (4) is arranged around the laid arrangement, and a concrete material is poured into this form (see FIG. 2).

After the cast concrete material has sufficiently hardened, the canopy (18) of the outer cylinder (6A) is opened in each anchor device (A) to press and fix each pressing bolt body (10A). After tightening the main nut (14) using a tool and pressing down to a predetermined compression position, the lock nut (15a) is screwed to fix the pressing bolt body (10A). If you want to gain even more compression force, press the bolt body (10A) from the above state.
Main nut for pressing and fixing the jack bolt body (10a) of
By screwing into (14), the pressing spring seat (11a) is depressed, and thereby, it is possible to earn.

While the compressive force is stored in each anchor device (A) in this manner, the concrete hardened body cannot lift the integrated compressive force and rises from the release material (3) (FIG. 6). ), Here the floating slab of the present invention
(2) will be completed (see FIG. 1). If the concrete hardened body floats before the pressing of the pressing bolt body (10A) in all anchor devices (A) is completed, the pressing pressure of the pressing bolt body in the remaining anchor device (A) is reduced. Let it complete. Also, frame
(4) may be used as it is as a component of the floating slab, or may be removed.

The floating slab of the present invention configured as described above
(2) is a state in which the frame slab (1) is elastically supported via a compression spring (12) via a compression spring (12) and is almost cut off. It is hardly transmitted to 1). In addition, the vibration transmitted to the compression spring (12) is absorbed by the elasticity. Therefore, if the floor slab on the floor is configured as the floating slab of the present invention, the vibration generated on the floor can be hardly transmitted to the floor below.

Embodiment 2 A floating slab using another example of the anchor device of the present invention will be described with reference to FIG. The anchor device (B) used in FIG. 7 is the same as that of the first embodiment except that the pressing bolt body (10B) and the outer cylindrical body (6B) are changed as described below. The same reference numerals as in the first embodiment denote the same parts, and a description thereof will be omitted.

That is, the outer cylindrical body (6B) in the anchor device (B) of the present embodiment has no screw groove formed on the inner surface thereof, and a plurality of protrusions (6b) are provided at a predetermined height at the same height. It is provided in. On the other hand, the pressing bolt body (10B) includes a jack bolt body (10a), a pressing spring seat (11a) rotatably mounted in a groove at the lower end of the bolt body, and the jack bolt body (10a). And a pressing and fixing nut (14b) to be screwed. The pressing and fixing nut (14b) is provided with a notch (not shown) through which the protrusion (6b) fixed to the inner wall of the outer cylinder (6B) is inserted. 6b), it can be inserted and removed from the outer cylinder (6B), is pressed downward beyond the convex part (6b) and is rotated, so that the notch matches the convex part (6b). When it disappears,
At (6b), insertion and removal upward are prevented.

Therefore, according to the present embodiment, the engagement position between the convex portion (6b) formed at a predetermined portion on the inner surface of the outer cylinder (6B) and the pressing bolt body (10B) is set in advance. There is an advantage that the compressive force (in other words, the repulsive force) of each anchor device (B) in the floating slab can be made uniform, and that a lock nut is not required.

Embodiment 3 A method of manufacturing a floating slab using still another example of the anchor device of the present invention will be described with reference to FIGS. First, the anchor device (C) shown in FIGS. 8 and 9 includes a base seat (13C), a pressing bolt body (10C), and a pressing bolt body (10C).
It is basically the same as the anchor device (A) in Embodiment 1 except that the engagement structure between the and the outer cylinder (6C) is changed as described below. The same reference numerals as in Example 1 are used, and description thereof will be omitted.

That is, the pressing bolt body (10C) in the anchor device (C) of the present embodiment includes a main body bolt (10c) and a pressing spring seat (1) which is screwed with the outer surface of the main body and presses the compression spring (12).
1c). The pressing spring seat (11)
c) is provided with a not-shown notch through which an engaging portion (6c) described below is inserted, and is configured to be insertable into and removable from the outer cylinder. Base seat (13C) used for the above anchor device (C)
The main body is provided with a main body bolt connecting portion (13c) which is screwed with a lower end of the main body bolt (10c) of the pressing bolt body (10C) at a central portion thereof. At a predetermined position on the inner surface of the outer cylindrical body (6C), a plurality of engaging portions (6c) that engage with and engage with the pressing spring seat (11c) of the pressing bolt body (10C) are the same. It is provided at the height. Reference numeral (15c) denotes a lock nut for preventing the pressing spring seat (11c) from loosening.

Therefore, as shown in FIG.
The lower end of the main body bolt (10c) is screwed into the main body bolt connection part (13c) of (13C), the base seat (13C) and the pressing bolt body (10C) are connected, and the compression spring (12) is overcompressed. The held material is inserted and fixed to anchor bolts (17) buried in predetermined portions of the frame slab (1) in the same manner as in Example 1, and then the release material is released.
(3) Each base seat (13C) is laid except for the mounting part, and each anchor device (C) is attached by covering each outer cylinder (6C) from above each base seat (13C), and then Each anchor device
Arm (7) for reinforcement arrangement projecting from outer cylinder (6C) of (C)
The reinforcing bar (5) is inserted through each of the insertion holes (7a) to complete the rebar arrangement.After that, a formwork (not shown) is arranged around the arranged rebar, and a concrete material is poured into the frame. And cure.

After the concrete material has hardened sufficiently,
Opening the canopy (18) of the outer cylinder body (6C) in each anchor device (C), turning the body bolt (10c) of each pressing bolt body (10C) to disconnect the connection with the base seat (13C), Instantly press bolt body
The (10C) is pushed up to the engaging portion (6c) protruding from the inner surface of the outer cylinder (6C) by the repulsive force of the compression spring (12) and is locked there (see FIG. 9). As shown in the figure, in this state, the load applied to the outer cylinder (6C) is elastically supported on the base via the pressing spring seat (11c) and the compression spring (12). While the compressive force is stored in each anchor device (C) in this manner, the concrete hardened body cannot lift the integrated compressive force and rises from the release material (3). The floating slab (2) will be completed. The floating slab (2) of the present invention configured as described above has the same effect as the floating slab obtained in the first embodiment.

As shown in FIGS. 10 and 11, FIG.
As a modified example (A1) of the sixth embodiment, the main nut (14) for pressing and fixing and the pressing bolt body (10A) are rotatably engaged with a rotation engaging portion (10D) formed of a groove and a ridge, Rotate the main nut (14) for pressing and fixing to raise the concrete hardened body (2).
May be lifted.

[0040]

According to the floating slab of the present invention, the vibration can be effectively absorbed, so that the vibration transmission path between the floor structure and the building slab can be effectively blocked between the floor structure and the building slab on a multi-family floor such as a building or an apartment. Floor slabs can be constructed. Also not limited to these, machine foundation, bubble bath, toilet,
The present invention can be suitably used for all floor structures that can generate vibration, such as a hotel kitchen, a fitness club, and a multistory parking lot.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a floating slab manufactured by a method of the present invention.

FIG. 2 is a schematic cross-sectional view of a main part of a floating slab according to the present invention at the time of casting concrete material.

FIG. 3 is a perspective view for explaining a state before placing concrete material in an example of a method for manufacturing a floating slab according to the present invention.

FIG. 4 is a perspective view when an example of the floating slab anchor device of the present invention is constructed.

FIG. 5 is a sectional view of the first embodiment of the anchor device for floating slab of the present invention at the time of placing concrete material.

6 is a sectional view of a main part when the floating slab is lifted by the floating slab anchor device of FIG. 5;

FIG. 7 is a sectional view of a second embodiment of the anchor device for a floating slab of the present invention in a state where the floating slab is lifted.

FIG. 8 is a sectional view of a third embodiment of the anchor device for floating slab of the present invention at the time of placing concrete material.

9 is a sectional view of a main part when the floating slab is lifted by the floating slab anchor device of FIG. 8;

FIG. 10 is a sectional view of a fourth embodiment of the anchor device for floating slab of the present invention at the time of placing concrete material.

11 is a sectional view of a main part when the floating slab is lifted by the floating slab anchor device of FIG. 10;

[Explanation of symbols]

(A), (B), (C)… Floating slab anchoring device (1)… Frame slab (2)… Floating slab (3)… Release material (4)… Form (5)… Reinforcing bar (6A), (6B), (6
C) ... outer cylinder body (7) ... arm for bar arrangement engagement (9) ... adapter for closing the gap (10A), (10B), (10C) ... pressing bolt body (10a) ... jack bolt body (10c) ... body Bolt (11a), (11c)
… Pressing spring seat (12)… Compression spring (13A), (13B),
(13C) ... base seat (13a) ... protruding ring (13c) ... main body bolt connection (14) ... main nut for pressing and fixing (14a) ... tool hook hole (14b) ... nut for pressing and fixing (15a), ( 15b),
(15c)… Lock nut (17)… Anchor bolt (18)… Canopy

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04B 5/43 E04B 1/98

Claims (7)

(57) [Claims] 1. A fixing plate fixed to a base, an elastic body placed on the fixing plate, a pressing body capable of compressing the elastic body, and an elastic body and a pressing body housed therein and pressed. An outer cylindrical body that can be supported by being separated from the fixed plate by an elastic body through a body, wherein the pressing body has an outer surface that is detachably engaged with the inner surface of the outer cylinder and an engagement position is predetermined. An anchor device for a floating slab, wherein the anchoring device is configured so as to be able to be fixed at a site, and the outer cylindrical body is configured to have a reinforcing bar mounting portion for engaging with a reinforcing bar for a slab on an outer surface thereof. 2. The floating slab anchor according to claim 1, wherein the pressing body is configured such that a distance between a portion pressing the elastic body and a portion engaging with the inner surface of the outer cylinder can be adjusted to an arbitrary length. apparatus. 3. The floating slab anchor device according to claim 1, wherein an engagement structure between the pressing body and the inner surface of the outer cylinder is screwed. 4. An engaging structure between the pressing body and the inner surface of the outer cylinder has a projection formed at a position corresponding to a compression position on the inner surface of the outer cylinder, and the projection formed on the pressing body can be inserted through the projection. The anchor device for a floating slab according to claim 1 or 2, comprising a notch. 5. A fixing plate fixed to a base, an elastic body mounted on the fixing plate, a pressing body capable of compressing the elastic body, and an outer cylinder capable of housing the elastic body and the pressing body therein. The pressing body is detachably connected to the fixing plate and is configured to hold the elastic body between the fixing plate and the pressing body in an overcompressed state in the connected state, The outer cylinder body has a reinforcement mounting portion for engaging with the slab reinforcement on its outer surface, and does not engage with this pressing body when the pressing body is in a connected state on its inner surface, and the connection is released. In this state, the elastic body is compressed, and the repulsive force causes the outer cylindrical body to be separated from the fixing plate and to have an engaging portion capable of engaging with the pressing body so as to be supported. . 6. A plurality of the anchor devices according to any one of claims 1 to 4 are fixed on each base at a portion of each fixing plate, and a release material is laid, and reinforcing bars of an outer cylinder of each anchor device are provided. A reinforcing bar is engaged with the mounting portion to arrange the reinforcing bar, a frame is formed on the base so as to include the anchor device and the reinforcing bar, a concrete material for slab is poured into the frame, and after the concrete material hardens, A method of manufacturing a floating slab, in which a pressing body of an anchor device is pressed to compress an elastic body, thereby causing a cured concrete body to be separated from a base by a repulsive force. 7. A plurality of the anchor devices according to claim 5 are fixed on a base at a portion of each fixing plate while maintaining the connection between the fixing plate and the pressing body of each device, and a release material is provided. Laying, arranging a reinforcing bar by engaging a reinforcing bar with a reinforcing bar mounting portion of the outer cylinder body of each anchor device, forming a frame on a base including the anchor device and the reinforcing bar, and slab in the frame body. A method of manufacturing a floating slab in which a concrete material for casting is cast, and after the hardening of the concrete material, the connection between the pressing body of the anchor device and the fixing plate is released to separate the hardened concrete body from the base.