JP4035633B2 - Deck plate with buried objects - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In buildings, when building concrete floor, buried object relates placement to implantation that make up設物deck plate as a floor formwork.
[0002]
[Prior art]
When a concrete structure is constructed, a deck plate with a truss is used as a floor formwork and a floor bar arrangement jig. In this case, in order to reduce the weight of the concrete floor slab constructed deck plate, to form a hollow portion in the slab, was embedded closed pipe (Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 11-141036
[Problems to be solved by the invention]
In this case, in general, a pipe having a circular cross section is used, so that a cylindrical hollow portion is formed in a concrete floor slab. In this case, there is a problem that vibrations transmitted through the floor are amplified through the hollow portion, and vibrations are transmitted to the upper and lower floors.
[0005]
[Means for Solving the Problems]
However, in the present invention, since the diffuse reflection surface is formed on the column body at least on the surface in the thickness direction, the above-mentioned problems are solved.
[0006]
That is, the present invention is on the base over the scan plates, and fixed in parallel a plurality of trusses, between the trusses, in parallel to the truss, place the cylinder buried objects of the outer diameter D _0, of the truss in a state of spaced main reinforcement and a predetermined gap, wherein fixed to the truss, the cylinder buried object is a predetermined distance L1 in the longitudinal direction, contraction of the outer diameter D1 and gradually reduced in diameter down the outer diameter A diameter portion is formed , a diffuse reflection surface is formed as D ₁ = “2/3” × D ₀ , and the cylindrical embedded object does not form a flat surface in the length direction, and L ₁ = D _0, and then, the voids received fitting engaged with the main reinforcement of the truss, a buried object deck plate, characterized in that elastically supports the minimum diameter portion of the reduced diameter portion. Further , in the above, the columnar embedded object is a deck plate with an embedded object formed by sealing both ends of the thin cylindrical body .
[0007]
The column body in the above is mainly a cylindrical body, and can be any lightweight material having a cylindrical external shape that excludes concrete. Therefore, it can be configured from a solid material such as polystyrene foam or a shape in which an opening of a cylindrical body such as a pipe is closed. Moreover, although a cylindrical body is preferable, it can also be comprised from polygonal prisms, such as a triangular prism and a quadratic prism.
[0008]
In addition, the diffuse reflection surface in the above includes a concave body, a convex surface, a concave and convex surface such as dimple processing applied to the surface of a golf ball, in addition to being formed by narrowing the outer shape in the length direction of the cylindrical body. Any surface can be used as long as it can diffuse and reflect the impact sound and vibration sound transmitted across the surface to attenuate the component passing therethrough. Preferably, the surface shape of a sphere is formed.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
(1) As an embedded object of the present invention, a void tube 17 in which both mouth edges 18, 18 are closed with a cap 20 is formed (FIG. 1 (a)). The void tube 17 having the outer diameter D ₀ is formed with a reduced diameter portion 19 formed by reducing the outer diameter at equal intervals L ₁ from the mouth edge 18 in the axial direction. Here, the diameter is reduced to about D ₁ = (2/3) × D ₀ where L ₁ = D ₀ . Outer diameter _{D 1} of the void tube that is usually used is about 100 to 250 mm. The void tube 17 is configured so that the cap 20 prevents concrete from entering the void tube 17.
[0010]
(2) If this void pipe 17 is embedded in, for example, a concrete slab 56, a hollow part (part without concrete) can be formed in the slab 56, and the weight of the slab 56 can be reduced. Further, Ri by the reduced diameter portion 19, in the length direction 59 of the void tube (cylinder) 17, the upper surface 61 of the void tube 17 in the thickness direction 60 side of the slab 56, the wave-like curved surface on the bottom surface 62 is formed (FIG. 6A). Therefore, when sound 63 such as impact sound or vibration propagates from the upper surface 57 to the lower surface 58 of the slab 56 to be constructed, the sound 63 is diffusely reflected (diffuse reflection) on the upper and lower surfaces 57 and 58, and the slab 56 The amount transmitted to the lower surface 62 side of 56 is attenuated. Therefore, propagation of vibrations and the like sandwiching the slab 56 can be reduced.
[0011]
(3) Moreover, if this void pipe | tube 17 is arrange | positioned between the trusses of the deck plate 14 with a truss, and is previously fixed to the truss 8, it will carry in the installation work of the void pipe | tube 17 very easily. Yes (Figure 3).
[0012]
Further, even a deck plate without a truss can be used in the same manner as in the past by abutting on the deck plate or leaving a predetermined distance by using an appropriate fixing means.
[0013]
Moreover, the void pipe | tube 17 can also be similarly embed | buried not only in the slab 56 but in the wall made from concrete (not shown).
[0014]
(4) The void tube 17 can also form fine irregular surfaces on the upper and lower surfaces (surfaces) 61 and 62 in the thickness direction 60 of the slab 56 instead of forming the reduced diameter portion 19 (FIG. 6B). )). In this case as well, the amount of sound 63 propagating from the upper surface 57 to the lower surface 58 of the slab 56 is diffusely reflected (diffuse reflection), and the amount transmitted to the lower surface 62 side of the slab 56 can be attenuated. The uneven surface is formed over almost the entire length of the length direction 59 of the void tube 17 (FIGS. 6B and 6C). Further, the irregular surface is constituted by a convex surface, a combination of a concave surface and a convex surface, in addition to a circular concave surface such as dimple processing of a golf ball. Further, the uneven surface can be formed not only on the upper and lower surfaces 61 and 62 but also on the entire peripheral surface of the void tube 17.
[0015]
(5) The diameter-reduced portion 19 may be about L ₁ = 2 × D ₀ (FIG. 1B). In this case, flat surfaces 64 and 64 are provided in the length direction 59. it is desirable that as little as possible, for example, the flat surface 64 and 64, it is desirable to form the irregular surface of (FIG. 1 (b), the Figure 6 (b)).
[0016]
(6) Moreover, the diameter reduction of the void pipe | tube 17 in the said is performed with the following apparatuses 52, for example (FIG. 5 (a)).
[0017]
That is, a fixed roll 46 that is fixed to a fixed receiver 45 fixed to the base 44, a lower slide roll 48 that is fixed to the slide receiver 47 at the same height as the fixed roll 46, a fixed roll 46, and a lower slide roll 48. And an upper pressing roll 51 attached to the shaft 50 of the base 47 and fixed to the swing receiver 49 (FIG. 5A). Each roll 46,48,51 have the same working diameter _{D 3.}
[0018]
The slide receiver 47 of the lower slide roll 48 can move in a substantially horizontal direction while keeping the shaft height the same as the shaft of the fixed roll 46 and can approach the fixed roll 46 side. Further, the swing receiver 49 of the upper pressing roll 51 is rotatably attached to the shaft 50 provided on the base 44 on the base end side, and the shaft of the upper pressing roll 51 is attached to the distal end side (FIG. 5A). .
[0019]
This device 52 processes the void tube 17 as follows. Between the fixed roll 46 and the lower slide roll 48, the void tube 17 (outer diameter D ₀ ) to be processed is placed with the axis in the horizontal direction, and the swing receiver 49 is rotated in the direction indicated by arrow 53. It presses with the upper pressing roll 51 from above the void pipe | tube 17 (FIG. 5 (a) chain line illustration 51).
[0020]
Subsequently, while rotating the rolls 46, 48 and 51, the slide receiver 48 is operated to gradually move the lower slide roll 48 toward the fixed roll 46 in the direction of the arrow 54, and at the same time, the swing receiver 49 is indicated by the arrow. The upper pressing roll 53 is gradually lowered downward by rotating in the direction 53 (FIG. 5A). With the rolls 46, 48, 51, the void tube 17 is squeezed and reduced in diameter to a predetermined diameter D ₁ , and the rolls 46, 48, 51 are arranged at the vertices of the equilateral triangle, The processing of the reduced diameter portion 19 is completed (FIG. 5B).
[0021]
[Example 1]
Embodiments of the present invention will be described with reference to the drawings.
[0022]
[1] Deck plate 14
[0023]
A deck plate 14 used in the present invention is configured by arranging trusses 3 and 3 in parallel on the upper surface of the base plate 1 (FIG. 3).
[0024]
The truss 3 has one upper rebar 5 as an apex, and two lower rebars 6 and 6 are arranged in the shape of an isosceles triangle on the bottom side, and one side 5a of the upper rebar 5 and one lower rebar 6 inside. In addition, the lattice reinforcing bars 8 in the length direction of the upper and lower reinforcing bars 5, 6, 7 are arranged. Similarly, a lattice rebar 8 in the length direction of the upper and lower reinforcing bars is arranged on the other side 5b of the upper reinforcing bar 5 and the inner side of the other lower reinforcing bar 7. The upper and lower reinforcing bars 5, 6, 7 and the lattice rebars 8, 8 are welded and fixed at the contact points.
[0025]
The lattice rebar 8 is bent horizontally with its lower end facing outward to form a leg 9, and the leg 9 is welded to the upper surface 2 of the base plate 1 (FIGS. 3A and 3B).
[0026]
[2] Void tube 17
[0027]
The void tube 17 is formed with a reduced diameter portion 19 having a diameter reduced to D ₁ for each distance L ₁ (L ₁ = D ₀ ) in a hollow metal tube having a length L ₀ and a diameter D ₀ . The diameter-reduced portion 19 gradually decreases in diameter from the diameter D ₀ , and the diameter D ₁ is preferably about two-thirds of D ₀ (FIG. 1A).
[0028]
For example, when D ₀ = 150 mm,
D ₁ = about 100 mm to 110 mm.
[0029]
Caps 20 made of styrene foam are put on the rims 18, 18 of the void tube 17. The cap 20 has the following configuration (FIGS. 3 and 2).
[0030]
A disc-shaped flange 22 that can contact the lip 18 of the void tube 17 and close the lip 18, and an inner surface of the flange 22, and a short cylindrical base that can be fitted inside the void tube 17. A base portion 21 including the fitting insertion portion 23 is formed. At the flange portion 22, an annular groove 26 into which the mouth edge portion of the void tube 17 is inserted is formed at the base edge of the base fitting portion 23.
[0031]
In the base portion 21, a cylindrical fitting insertion portion 24 having the same outer diameter as that of the base fitting insertion portion 23 is continuously provided on the inner surface of the base fitting insertion portion 23. The cylindrical insertion portion 24 is formed with slits 25 and 25 extending over the entire length in the axial direction every 90 degrees. In the shape as described above, it is molded with an integral polystyrene foam (FIGS. 2A, 2B, and 2C). If the cement paste does not enter the void tube 17, the material and shape are arbitrary. If it has a certain elasticity, the mounting operation is easy, and it is possible to use materials other than foamed polystyrene.
[0032]
[3] Metal fittings 29 (30, 34) for mounting the void tube 17
[0033]
The fitting 29 for attaching a void tube includes a void receiving metal 30 and a void pressing metal 34 (FIG. 4). The void fitting 29 is usually formed from a linear steel material, but may be a flat hoop-shaped (elongated flat plate) steel material or other metal material. Further, until the concrete of the floor slab is solidified, the void pipe 17 can be held so as not to move, and if it does not adversely affect the concrete after solidification, the material is arbitrary and is made of other materials such as various resins and wood. You can also.
[0034]
The void bracket 30 is provided with support portions 33 having locking bent portions 32, 32 that can be fitted and locked to the lower main bars 6, 7 of the truss 3 at the lower ends on both sides of a substantially V-shaped receiving portion 31. Thus, it is formed in an integral substantially M shape. Further, the void pressing metal fitting 34 is provided with support portions 37 having locking bent portions 36 and 36 that can be fitted and locked on the upper main muscle 5 of the truss 3 on both ends of the pressing portion 35 having a substantially inverted V shape. Thus, it is formed in an integral substantially W shape (FIG. 4).
[0035]
In addition, the void receiving bracket 30 is elastically supported by being repelled so as to spread outward while being fitted and locked to the lower main bars 6 and 7 of the truss 3, and the void pressing metal 34 is connected to the upper main bar of the truss 3. In a state of being fitted and locked to 5, it is elastically supported by repelling so as to spread outward (FIG. 4).
[0036]
[4] Configuration of deck plate 40 with void tube 17
The deck plate 14 uses the void tubes 17 and 17 having a reduced diameter portion of the present invention in the void arrangement spaces 15 and 15 between the trusses 3 and 3 in the same manner as the conventional void tube.
[0038]
At the position where the reduced diameter portion 19 is arranged in the void arrangement space 15, the engagement bent portion 32 of the void receiving metal fitting 30 is fitted and locked to the lower reinforcing bars 6 and 7 facing the void arrangement space 15. The metal fitting 30 is installed between the lower reinforcing bars 6 and 7.
[0039]
Subsequently, the void tube 17 having the reduced diameter portion 19 is disposed between the trusses 8 in the same manner as the conventional void tube, and the reduced diameter portion 19 is aligned with the receiving portion 31 of the void receiving metal fitting 30.
[0040]
Subsequently, the void presser metal fitting 34 is disposed above the void receiving metal fitting 33, and the locking bent portions 36, 36 of the void presser metal fitting 34 are fitted to the upper reinforcing bars 5, 5 of the adjacent trusses 8, 8, respectively. The reduced diameter portion 19 of the void rod 17 is brought into elastic contact with the holding portion 35. The void tube 17 is elastically supported between the void pressing metal fitting 34 and the void receiving metal fitting 30, and movement in the vertical and horizontal directions (a direction perpendicular to the axis and away from the base plate 1) is restricted. Further, since the void pressing metal member 34 and the void receiving metal member 30 are disposed at the minimum diameter portion of the reduced diameter portion 19 of the void tube 17, the movement of the void tube 17 in the axial direction is also restricted.
[0041]
As described above, the deck plate 40 with a void tube of the present invention is configured (FIGS. 3A and 3B).
[0042]
The deck plate 40 with the void tube is used by fixing the mounting rods 41 and 41 to the ends of the trusses 8 and 8 and fixing it to the steel beam 42 in the same manner as the conventional deck plate. Further, the lower reinforcing bars 11 and 11 are arranged on the lower reinforcing bars 6 and 7 of the truss 8, and the upper reinforcing bars 12 and 12 are arranged on the upper reinforcing bar 5 (FIGS. 3A and 3B). . Thereafter, concrete is placed on the deck plate 40, the concrete is solidified to form a concrete slab, and a hollow void pipe 17 is embedded in the slab (not shown).
[0043]
In the above description, the mounting rod 41 is used for the steel structure. However, when the casing is a reinforced concrete structure, a conventional mounting rod that can be locked to the upper edge of the mold is used (not shown).
[0044]
[5] Other embodiments
(1) In the above embodiment, the mounting of the void tube 17 to the trusses 8 and 8 is constituted by the substantially M-shaped void receiving metal fitting 30 and the substantially W-shaped void holding metal fitting 34. (Not shown). For example, a ring-shaped steel material can be fitted to the reduced diameter portion 19 of the void tube 17 and the ring-shaped steel material and the truss can be fixed with a steel material on a line (not shown). In short, it is only necessary to place concrete so that the void pipe does not move until the concrete is solidified.
[0046]
(2) Moreover, in the said Example, the cap 20 is attached so that the penetration | invasion of concrete may be prevented in the void pipe | tube 17, and the void in the void pipe | tube 17 may be maintained. Other structures can be used as long as the structure can block 18 (not shown). Although it is desirable to seal in a watertight manner, a structure corresponding to the cement paste may be used (not shown) if it is possible to allow some cement paste to be mixed.
[0047]
(3) In the above-described embodiment, one void tube 17 is disposed between the trusses 8 and 8, but a plurality of void tubes 17 may be disposed (not shown). However, it is necessary for the upper and lower reinforcing bars 5, 6, 7 of the truss 8 to have a predetermined concrete cover thickness.
[0048]
(4) Moreover, in the said Example, after filling the sound absorption material (glass wool etc.) in the void pipe | tube 17 in whole or in part, if it closes with the cap 20, a soundproofing sound insulation effect can be improved further (FIG. Not shown).
[0049]
(5) Further, in the above embodiment, the length L ₁ in the void tube 17 ₍₌ D ₀₎ to focus each form a reduced diameter portion 19 has a surface shape such as a continuous spheres, L ₁ the may be formed continuously fine reduced diameter portion 19 sufficiently small groove than the D ₀ (FIG. 7 (a) (b)) .
[0050]
Moreover, the groove 65, 65 along the length direction 59 of the void pipe | tube 17 can also be formed over the perimeter with the same meaning (FIG.7 (c) (d)). The grooves 65 and 65 may be formed at least on the upper and lower surfaces 61 and 62 of the void tube 17 (not shown).
[0051]
(6) Moreover, in the said Example, although the reduced diameter void pipe | tube was used as a concrete embedding thing, the solid foam polystyrene pillar etc. which made the external shape which has the same diameter reduction part 19 can also be used. Not shown). In short, the structure is arbitrary as long as it is a slab made of concrete and can bury concrete.
[0052]
【The invention's effect】
In this invention, since it is a buried object in which a diffuse reflection surface is formed by a reduced diameter portion or the like, if the buried object is embedded in the concrete of the floor or wall of the building, the concrete is eliminated and the floor or wall is reduced in weight. At the same time, the vibration and sound propagation across the concrete floor or wall can be reduced, and the soundproof and sound insulation performance can be improved.
[0053]
In addition, if a buried plate is arranged and fixed between trusses of a deck plate with a truss to form a deck plate with a buried object, the concrete slab can be easily embedded in the slab without structural weakening. An object can be arranged, and there is an effect that the soundproof and sound insulation performance can be improved. Moreover, if a void attachment is arranged in the reduced diameter portion of the embedded object and the void attachment is fixed to the truss, the movement of the embedded object can be easily regulated in the front, rear, left, and right directions.
[Brief description of the drawings]
FIG. 1 is an assembly drawing of an embedded body of the present invention.
2A is a front view, FIG. 2B is a right side view, and FIG. 2C is a cross-sectional view taken along line AA. FIG.
FIG. 3 is a deck plate with a truss according to the present invention, in which (a) is a side view and (b) is a front view.
FIG. 4 is a front view of an embedded body fixture used in the embodiment of the present invention.
FIGS. 5A and 5B show an apparatus for forming a diaphragm in an embedded body according to the present invention, in which FIG. 5A shows before processing and FIG. 5B shows after processing.
6A and 6B are schematic longitudinal sectional views of a slab in which a cylindrical body for explaining sound propagation according to the present invention is embedded, and FIG. 6C is a sectional view taken along line BB in FIG.
7A is a side view of another embodiment of the cylindrical body of the present invention, FIG. 7B is a front view of FIG. 7A, and FIG. 7C is a side view of another embodiment of the cylindrical body. (D) is a front view of (c).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base plate 2 Upper surface 3 of base plate Truss 5 Upper rebar 6 Lower rebar 7 Lower rebar 8 Lattice rebar 9 Lattice rebar leg 11 Lower strength bar 12 Upper strength bar 14 Deck plate 15 Void pipe arrangement space 16
17 Void tube 18 Void tube rim 19 Reduced diameter portion 20 Cap 21 Cap base portion 22 Base portion of cap 23 Base insertion portion of base portion of cap 24 Cylindrical insertion portion of cap 25 Cap slit 26 of cap Annular groove 29 Void mounting bracket 30 Void receiving bracket 31 Receiving part (void receiving bracket)
32 Locking bent part (void receiving bracket)
33 Supporting part (void receiving bracket)
34 Void holding bracket 35 Holding section (Void holding bracket)
36 Locking bending part (void holding metal)
37 Supporting part (void retainer)
40 Deck plate with void pipe (buried object) 56 Slab 59 Length direction of cylindrical body 60 Thickness direction of slab 65 Groove

Claims (2)

A plurality of trusses were fixed in parallel on the base plate, and a cylindrical embedded object having an outer diameter D ₀ was arranged between the trusses in parallel with the trusses so as to leave a predetermined gap from the main reinforcing bars of the trusses. state, the fixed to truss, the cylinder buried object is a predetermined interval L ₁ in the longitudinal direction, to form a reduced diameter portion of the outer diameter D1 and gradually reduced in diameter down the outer diameter, D as ₁ = "2/3" × _{D 0,} form a diffuse reflection surface,
The cylindrical embedded object does not form a flat surface in the length direction, and L ₁ = D ₀ ,
A deck plate with an embedded object , wherein a void receiving bracket locked to a main reinforcing bar of the truss is elastically supported by a minimum diameter portion of the reduced diameter portion . The deck plate with an embedded object according to claim 1 , wherein the cylindrical embedded object is formed by sealing both ends of a thin cylindrical body .

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