JP2001152462A - Footing structure of building and construction method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a footing structure of a building and a construction method, capable of being disassembled, moved and reconstructed, targeting a large-sized building structure. SOLUTION: A footing block 10 is formed buy accumulating accumulation units 30 on footing units 20, and the footing blocks 10 are connected to each other with reinforcing bars 60 via a mediation member (a resin plate 40 or a resin block 50) equipped with fracture readiness.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foundation structure of a building which can be easily constructed and removed, and is particularly suitable for a building constructed on a fixed leased land, and a construction method thereof.

[0002]

2. Description of the Related Art In recent years, distribution system reforms and IT (Information)
With the spread of formation technology (information technology), the location conditions of large stores, offices, warehouses, and the like are flowing remarkably. Until recently, these large stores, etc. have been driven by the advancement of motorization, and have shifted from locations near downtown areas and around stations to locations in suburban areas where land prices are inexpensive. Decline, consumer lifestyle changes, and IT
As a result, large-scale stores are becoming more diversified not only by shifting to suburban locations, but also by returning to general commercial and residential areas in cities. If necessary, it can be said that the location of large stores and the like has become much more fluid than before.

[0003] Therefore, large-scale stores and the like cannot cope with such fluctuations in location conditions by constructing a building with securing their own land as in the past. There is an increasing number of cases in which land suitable for a location is borrowed for a certain period of time, and a building is constructed on this leased land. This trend has been fueled by legislation, such as the Large Retail Stores Act and the Fixed Land Leasehold Act, which are driving changes in commercial and distribution activities.

[0004]

By the way, a fixed-term lease for housing is 50 years or more corresponding to the lifetime of the lessee.
A long period of 60 years is appropriate, but in the case of constructing a base for commercial and distribution activities that must respond quickly and appropriately to the rapidly changing social situation, 50 to 6 years
Zero years is too long, usually 10-15 years
Year, 20 years at longest. However, buildings have a useful life of at least 50 years,
When the lease period of the leased land becomes full in 10 to 20 years, it is usually necessary to clear the leased land and give it to the landowner, unless the landowner buys the building.

[0005] However, when the building is dismantled in order to return the vacant land to the landowner, there is a problem that a large amount of materials is scrapped and resources and energy are wasted enormously. By the way, when dismantling buildings, structural materials such as pillars and beams are erected on the ground,
Demolition is relatively easy, and recycling is possible, whereas the foundation is a sturdy concrete structure with reinforcement, with the lower half buried in the ground on the premises. Therefore, if you try to remove it, you can not do it without crushing it with a working machine such as a rock drill, and it will cost enormous removal costs, and you will not be able to recycle the foundation, It had a social problem of forcing a great loss of money, resources and energy.

The present invention has been made in view of the above circumstances, and has been made in response to social demands for smooth operation of industrial activities. The present invention is intended for large-scale building structures and can be disassembled, relocated, and reconstructed. An object of the present invention is to provide a foundation structure of a building and a construction method thereof.

[0007]

According to the first aspect of the present invention,
A precast concrete footing unit laid on the building site, a precast concrete beam unit stacked on the footing unit, and interposed between adjacent footing units and between adjacent beam units And the footing unit and the beam unit have a reinforcing bar embedded in the interposed member protruding from the mutual coupling surface. It is a feature.

According to the present invention, a footing unit and a beam unit are laid on a site of a building,
By setting the reinforcing bar projecting from the end face of each unit into a connected state and burying the connected portion in the interposed member, the footing unit and the beam unit are connected to each other via the interposed member, and The state where the foundation is constructed is obtained. As described above, the footing unit and the beam unit made of precast concrete mass-produced at the factory are carried to the construction site, and the footing unit and the beam unit are placed on a predetermined groundwork preliminarily applied to the building area on the site. The foundation is easily formed by the simple work of placing the foundation, and simplification and speeding up of the foundation construction are realized. In addition, the presence of the interposed member absorbs dimensional errors of the footing unit and the beam unit during construction of the foundation.

[0009] Since the interposed member is formed of a material having easiness of destruction, the interposed member can be easily destroyed when disassembling the foundation by relocating a building or the like.
Due to this destruction, the reinforcing bars connecting the footing units and the beam units can be exposed to the outside, and by separating the exposed reinforcing bars, the footing unit and the beam unit can be easily formed into a foundation block in which these are integrated. Separated.

The foundation block formed by separating the footing unit and the beam unit from each other is removed by a simple operation of lifting with a predetermined work machine, and is directly loaded on a transport vehicle and transported to a destination. Can be.

Therefore, the foundation is crushed with a tool such as a rock drill,
The conventional inconvenience of requiring a lot of labor and a long construction period, such as scooping a large amount of crushed material with a working machine such as a shovel truck and loading it on a transport vehicle, has been resolved, and the disassembly of the foundation has been significantly improved Improving speed and cost reduction, and removing the building blocks from the building area without breaking them, keeping them in their original form, enabling recycling and effective use of resources It also contributes to reducing energy consumption during disassembly.

According to a second aspect of the present invention, in the first aspect of the present invention, in the beam unit, the end faces of the plurality of unit beam units are connected to each other via a reinforcing bar projecting from each other. The reinforcing bar is embedded in the interposed member.

According to the present invention, when a plurality of beam units are connected, the connection between the adjacent beam units is connected by the same connection structure as the connection structure between the footing units. The connection between the beam units is facilitated and the disassembly is facilitated. In addition, by connecting a plurality of beam units, a foundation corresponding to a large-scale building can be constructed.

According to a third aspect of the present invention, there is provided the first or second aspect.
In the invention described above, the interposed member is made of a synthetic resin material having watertight and waterproof properties.

According to the present invention, since the reinforcing bar projecting from the footing unit and the beam unit is embedded in a synthetic resin material having watertight and waterproof properties, the corrosion of the reinforcing bar due to intrusion of water or air is ensured. Is prevented. In addition, when, for example, an expandable synthetic resin is selected as such a synthetic resin material, the expandable synthetic resin has excellent shape retention properties, can be easily broken, and is a basic material for recycling. It is suitably used as a material for an interposed member that is presumed to be easily broken at the time of removal.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the footing unit includes a bottom plate and a peripheral wall erected from each edge of the bottom plate. The space surrounded by the bottom plate and the peripheral wall is formed with a filling space for filling the building solidifying material, and a part of the peripheral wall is provided with a notch groove for fitting the reinforcing bar having an open upper part. It is characterized by the following.

According to the invention, after the footing unit and the beam unit are constructed in the building area, the reinforcing bar is arranged in the filling space, and the reinforcing bar is made to protrude outside from the cutout groove. The operation of embedding in the interposed member becomes easy. Then, in a state where the interposed member is interposed between the footing unit and the beam unit, the filling space of the footing unit is filled with the solidification material for building, so that the reinforcing bar is embedded in the solidified material for building, and the footing unit and The basic block formed by integrating the beam units is in a stable state as a whole.

As a solidifying material for construction, ready-mixed concrete is suitable, but in addition to ready-mixed concrete, FRP (fi
Architectural chemical fillers such as ber reinforced plastics can be used.

According to a fifth aspect of the present invention, there is provided a method for constructing a foundation of a building using the foundation structure of the building according to any one of the first to fourth aspects. Excavation is performed to a predetermined depth at the position where the footing unit and the beam unit are to be laid, and a rubble stone is laid in a digging groove formed by the digging to form a rubble stone layer. To form a discarded concrete layer, lay sand on the discarded concrete layer to form a sand layer, and place the footing unit and the beam unit on the sand layer with the interposition of the reinforcing bar embedded therein. This is a method for implementing a building foundation characterized by laying through an installation member.

According to the present invention, in addition to obtaining the same operational effects as the first aspect of the present invention, an appropriate groundwork comprising a rubble stone layer and a discarded concrete layer is provided below the footing unit and the beam unit. Therefore, the obtained foundation becomes more stable.

According to a sixth aspect of the present invention, there is provided a method of constructing a foundation of a building using the foundation structure of a building according to the fourth aspect, wherein the footing of a building area in a building site is provided. Excavating the location where the unit and beam unit are laid to a predetermined depth, laying a rock stone in the excavation groove formed by this excavation to form a rock stone layer, casting concrete discarded on this rock stone layer Forming a discarded concrete layer, laying sand on this discarded concrete layer to form a sand layer,
A building, wherein the footing unit and the beam unit are laid on the sand layer via the interposed member in a state where the rebar is buried, and a filler is laid in a filling space of the footing unit. It is a basic method of enforcement.

According to the present invention, the same functions and effects as those of the fourth and fifth aspects are obtained.

[0023]

FIG. 1 is an exploded perspective view showing one embodiment of a wife foundation in a building foundation according to the present invention.
FIG. 2 is an exploded perspective view showing one embodiment of an intermediate foundation in the building foundation according to the present invention. FIG. 3 is an exploded perspective view showing one embodiment of a cloth foundation in the building foundation according to the present invention. In the present embodiment, a base block 10 constituting a building base that is easy to recycle according to the present invention includes a wife-side base 11 as a base of a large pillar located at a corner of the building, and a wife-side base 11. An intermediate foundation 12 as a foundation of a large pillar, which is disposed therebetween, and is disposed between an adjacent wife-side foundation 11 or between an adjacent wife-side foundation 11 and the intermediate foundation 12, and is provided with a stud and an outer wall. There are three types, a cloth foundation 13 as a supporting foundation.

The basic block 10 includes a footing unit 20 and a stacking unit (beam unit) 30 stacked on the footing unit 20.
The footing unit 20 is laid on a below-mentioned local business constructed in a building area of the building site, and includes a wife-side footing unit 21 used for the wife-side foundation 11 and the intermediate foundation 12. There are three types, an intermediate footing unit 22 used for the fabric and a fabric foundation footing unit 23 used for the fabric foundation 13.

The stacking unit 30 is used for erecting a pillar on an upper surface in a state where the stacking unit 30 is stacked on the footing unit 20, and is a rectangular parallelepiped wife side stacked on the wife side footing unit 21. A bundle unit 31, a rectangular parallelepiped intermediate bundle unit 32 stacked on the intermediate footing unit 22, and a cloth wall unit applied to the cloth basic footing unit 23 and having substantially the same length as the cloth basic footing unit 23. 33 are used.

The footing unit 20 is made of precast concrete in which a reinforcing steel capable of withstanding a predetermined supporting reaction force generated by a load on a column, a wall, or the like is used. The bottom plate 24 has a rectangular shape in plan view. And a peripheral wall 25 erected from four edges of the bottom plate 24. The ready-mixed concrete C is poured into the filling space S surrounded by the bottom plate 24 and the peripheral wall 25 to form a cast-in concrete layer 26 (see FIGS. 4 and 5).

The peripheral wall 25 is provided at an appropriate position on the peripheral wall 25.
A predetermined number of square crenels 27, which are notched openings formed by being cut downward from the upper edge, are provided, and the reinforcing bar 60 fitted into these square crenels 27 is mounted in the filling space S. I am trying to be.

When the footing unit 20 is the wife's footing unit 21,
As shown in FIG. 1, a pair is provided on each of the peripheral walls 25 adjacent to each other so as to be orthogonal to each other. Reinforcing bars 60 (bending bars 61) bent at right angles are fitted into these square crenels 27, whereby the bent portions of the pair of bending bars 61 are housed in the filling space S.

When the footing unit 20 is the intermediate footing unit 22, the square crenellated body 27 is attached to each of the peripheral walls 25 facing each other with the bottom plate 24 interposed therebetween.
Each pair is recessed so as to face each other. Then, a pair of straight reinforcing bars 62 are mounted in the filling space S by fitting straight reinforcing bars 60 (straight reinforcing bars 62) into the square bars 27 facing each other.

When the footing unit 20 is the cloth-based footing unit 23, the square crenel 27 is
A pair of recesses is formed on each of the peripheral walls 25 (end walls 25a) facing each other across the respective longitudinal ends of the bottom plate 24 so as to face each other. Then, the straight reinforcing bars 62 are fitted into the facing square holes 27 so that the straight reinforcing bars 62 are housed in the filling space S.

In the case of the cloth-based footing unit 23, it is not necessary to arrange the straight reinforcing bars 62 so as to extend over the square crenels 27 facing each other. The reason is that, since the cloth-based footing unit 23 is long, for example, one straight reinforcing bar 62 is fitted into the square eyelet 27 on one end wall 25a, and the other is inserted into the square eyelet 27 on the other end wall 25a. Even if one straight reinforcing bar 62 is fitted, it is possible to secure a long overlapping margin of each of the straight reinforcing bars 62 in the filling space S, and the two straight reinforcing bars 62 overlap. This is because when the ready-mixed concrete layer 26 is formed by pouring the ready-mixed concrete into the filling space S in this state, the straight reinforcing bars 62 are reliably fixed by the surrounding concrete. However, the present invention does not exclude that one straight reinforcing bar 62 is inserted between the opposed square crenellated holes 27.

The stacking unit 30 includes a unit body 34 made of precast reinforced concrete designed to withstand a shearing force and a moment generated by a load such as a column or a wall, and a unit body 34 embedded in the unit body 34 and having both ends. A predetermined number of reinforcing bars 60 projecting from the unit main body 34 to the outside, a plurality of anchor bolts 35 hanging from the bottom of the unit main body 34, and the anchor bolts 3
5 is provided with a plurality of anchor nuts 36 screwed to the lower end.

The anchor bolt 35 is used to make the stacking unit 30 stand on the bottom plate 24 of the footing unit 20, and the anchor nut 36 is used to adjust the length of the anchor bolt 35. . By adjusting the amount of screwing of the anchor nut 36 into the anchor bolt 35, the droop length of the anchor bolt 35 and the anchor nut 36 together (usually this droop length is set to be substantially the same as the depth dimension of the filling space S) ) Are adjusted so that they are all the same.
0 can be stood on the bottom plate 24 in a stable state.

The wife bundle unit 31 of the stacking unit 30 has a plane dimension smaller than the plane dimension of the bottom plate 24 of the wife footing unit 21, and the filling space S
Are arranged eccentrically so that the corners of the unit body 34 are located at the corners of. Such wife side bundle unit 3
1 includes the reinforcing bar 60 as the wife footing unit 2
Folded reinforcing bars 61 similar to those of No. 1 are buried in two upper and lower stages in the same arrangement. The eccentric position of the stacking unit 30 can be freely set according to each situation in consideration of the situation of the building area on the site and the situation of the building at the time of design or on-site construction.

The intermediate bundle unit 32 also has a plane dimension set to be smaller than the plane dimension of the bottom plate 24 of the intermediate footing unit 22, and one edge of the unit body 34 corresponds to one side wall of the peripheral wall 25 surrounding four sides. Eccentric arrangement. The intermediate bundle unit 32 includes a reinforcing bar 60.
A straight reinforcing bar 62 similar to that of the intermediate footing unit 22 is buried in two upper and lower sections in the same arrangement.

The length of the cloth wall unit 33 is set to be substantially the same as the length of the cloth foundation footing unit 23, and the width is slightly shorter than the width of the cloth foundation footing unit 23. Dimensions are set. Therefore, the cloth wall unit 33 is connected to the concrete layer 2
The inverted T-shaped cloth base 13 is formed in a state where the cloth base 13 is disposed on the cloth base footing unit 23 via the base 6.

The footing units 20 are connected to each other via a reinforcing bar 60 projecting outward from the square eye 27. Therefore, each footing unit 2
The square crenells 27 provided at 0 are arranged so as to face each other between the footing units 20 connected to each other. As shown in FIG. 1, a male screw 63 is screwed into a portion of the reinforcing bar 60 protruding outside from the base block 10, and a joint nut member having a screw hole penetrating the male screw 63 in the longitudinal direction. 28 is screwed on,
Reinforcing bars 60 of the foundation block 10 arranged next to each other can be connected to each other via the joint nut member 28.

According to the present invention, a male screw 63 is screwed into a portion of the reinforcing bar 60 projecting from the footing unit 20 to the outside, and the joint nut member 28 is screwed to the male screw 63 to connect the footing units 20 to each other. The connection is not limited to the connection, and as shown in FIG. However, in this case, the length of the portion protruding from the footing unit 20 to the outside is long, and this long protruding portion is connected to another footing unit 20 as shown in FIG.
(In the case of FIG. 3, the cloth foundation footing unit 23) needs to be fitted into the filling space S and fixed by the jointed concrete layer 26.

FIG. 4 is a perspective view showing the basic block 10 formed by stacking the stacking unit 30 on the footing unit 20. FIG.
1, (b) shows an intermediate foundation 12, and (c) shows a cloth foundation 13, respectively. FIG. 5 is a sectional view taken along line AA of FIG.
It is a line sectional view.

First, as shown in FIG. 4A and FIG. 5, the wife side bundle unit 31 has the wife side bundle unit 31 eccentric in both the width direction and the longitudinal direction on the upper surface of the wife side footing unit 21. It is in a state of being piled up at the set position via the jointed concrete layer 26. FIG.
Shows only the state in which the wife side bundle unit 31 is eccentric in the width direction. The wife-side foundation 11 is constructed at a corner of the building foundation, and a large pillar serving as a basic structural material of the building is erected on the upper surface of the wife-side bundle unit 31.

Further, as shown in FIG. 4 (b), the intermediate foundation 12 is provided on the upper surface of the intermediate footing unit 22 with the intermediate bundle unit 32 eccentric only in the longitudinal direction via the jointed concrete layer 26. It is formed in a stacked state. The intermediate foundation 12 is constructed between the wife-side foundations 11, and a large pillar as a structural material is erected on the upper surface of the intermediate bundle unit 32.

Further, as shown in FIG. 4C, the fabric foundation 13 is formed on the upper surface of the fabric foundation footing unit 23 in a state where the fabric wall unit 33 is piled up via the jointed concrete layer 26. Have been. The cloth foundation 13 is provided between the wife-side foundation 11 and the intermediate foundation 12 or the intermediate foundation 1 provided next to the intermediate foundation 12.
The wall portion of the building is supported on the upper surface of the cloth wall unit 33.

Next, the connection structure of the basic blocks 10 will be described with reference to FIGS. FIG. 6 is a perspective view for explaining a connection structure between the cloth basic footing units 23, and FIG. 7 is a cross-sectional view of a connection structure between the cloth basic footing units 23. FIG. 8 is a perspective view for explaining a connection structure between the intermediate footing unit 22 and the cloth-based footing unit 23. 9 is a perspective view for explaining a connection structure between the stacking units 30. FIG. 9A shows a state before the resin block 50 is mounted between the stacking units 30, and FIG. The state where the resin block 50 is mounted between the stacking units 30 is shown. The wife's footing unit 2
The connection structure between the first footing unit 23 and the fabric base footing unit 23 is the same as the connection structure between the intermediate footing unit 22 and the fabric base footing unit 23 shown in FIG.

First, in the connection between the intermediate footing unit 22 and the cloth-based footing unit 23, as shown in FIG.
A resin plate (intermediate member) 40 made of foamable synthetic resin is temporarily placed at a predetermined position in the building area with its end faces facing each other.
A pair of reinforcing bars 60 (straight reinforcing bars 62) are fitted into the square crenels 27 of each fabric base footing unit 23. In this fitting operation, the resin plate 40 is held between the end faces of the respective fabric base footing units 23. In the example shown in FIG. 6, a predetermined number of spacers 29 are disposed on the bottom plate 24 of the fabric base footing unit 23, and the straight reinforcing bars 62 are provided by these spacers 29.
The height adjustment has been made.

The resin plate 40 is a plate made of a foamable synthetic resin having a watertightness preventing property, such as polyethylene foam, polypropylene foam, polystyrene foam (styrene foam), urethane foam, or the like. This is for closing the gap between the units 23 while absorbing the dimensional error between them, and is set so that the vertical and horizontal dimensions are the same as the end face of the fabric base footing unit 23, and the thickness dimension is assumed. The dimension is set slightly thicker than the dimension between the cloth foundation footing units 23 to be formed.

In the resin plate 40, insertion holes 41 are formed at positions corresponding to the pair of straight reinforcing bars 62, and rubber tubes 42 are inserted into the insertion holes 41, respectively. When the straight reinforcing bar 62 is inserted through the rubber tube 42, the resin plate 40 becomes
It is in the state attached to. Conversely, the rubber tube 42 may be press-fitted and externally fitted to the straight reinforcing bar 62, and then the straight reinforcing bar 62 fitted with the rubber tube 42 may be inserted into the insertion hole 41. The straight reinforcing bar 62 is connected to the rubber tube 4.
The outer fitting prevents the outer peripheral surface from being in direct contact with air, thereby effectively suppressing oxidative corrosion.

The resin plate 40 is pressed and sandwiched between the end faces of the respective cloth basic footing units 23 by moving the two temporarily placed cloth basic footing units 23 to their proper positions, as shown in FIG. As a result, it is compressed and elastically deformed, so that it is mounted between the adjacent fabric foundation footing units 23 in close contact with the respective end surfaces.

Next, the connection between the intermediate footing unit 22 and the cloth-based footing unit 23 is performed in the same manner as described above. That is, as shown in FIG. 8, the resin plate 40 mounted on the pair of straight reinforcing bars 62 is disposed between the intermediate footing unit 22 and the cloth-based footing unit 23 whose connection surfaces face each other in the same manner as described above. By bringing the intermediate footing unit 22 and the cloth-based footing unit 23 close to each other, the resin plate 40 is pressed and sandwiched therebetween. The procedure for mounting the resin plate 40 and the material and configuration of the resin plate 40 are the same as described above.

The resin plate 40 is placed between the footing units 20 (between the fabric footing units 23, the intermediate footing unit 22, and the fabric footing unit 2).
3 and between the wife-side footing unit 21 and the cloth foundation footing unit 23) in order to eliminate the unsightly appearance due to the presence of a gap between the adjacent footing units 20, and to provide a basic block. This is because the resin plate 40 can be easily broken when disassembling 10. That is, the resin plate 40 is broken, and the reinforcing bar 60 exposed to the outside through the rubber tube 42 is blown or cut, or when the reinforcing bars 60 are connected by the connecting nut member 28, The footing unit 20 connected by the unscrewing operation can be easily separated in a reusable state.

Next, the connection structure of the stacking units 30 will be described with reference to FIG. Stacking unit 30 (wife-side bundle unit 31, intermediate bundle unit 32 and cloth wall unit 3)
Regarding 3), since the planar shape is smaller than the footing unit 20 (the wife side footing unit 21, the intermediate footing unit 22, and the cloth-based footing unit 23), each of the piles adjacent to each other while being piled up on the footing unit 20 is used. Since the gap size between the units 30 is considerably large, and the adjacent stacking units 30 are connected to each other by the respective reinforcing bars 60 being screwed to the joint nut members 28, The resin plate 40 having a small thickness as in the above example cannot cope with filling the gap.

Therefore, a resin block 50 made of an expandable synthetic resin is used as an interposed member that fills the space between the stacking units 30. The resin block 50 is made of the same material as the resin plate 40. Such a resin block 50 is formed by stacking a pair of block bodies 51 as shown in FIG. 9A (the cloth wall unit 33 is shown as the stacking unit 30 in FIG. 9). I am trying to.

The vertical dimension of each block body 51 is set to be the same as the vertical dimension of the stacking unit 30 (cloth wall unit 33), and the width dimension is set to the cloth wall unit 33.
Is set to half of the width dimension. The length is set slightly longer than the gap between the adjacent fabric wall units 33.

The block body 51 has a pair of upper and lower mounting grooves 52 extending in the horizontal direction on each opposing surface. These mounting grooves 52 are for accommodating the straight reinforcing bar 62 and the joint nut member 28 which are bridged between the opposed end faces of the adjacent fabric wall unit 33, and are provided at the center thereof. Large-diameter arc groove 53 corresponding to nut member 28
And small-diameter arc grooves 54 extending from both ends of the large-diameter arc groove 53 horizontally in opposite directions and corresponding to the linear reinforcing bars 62.

After applying a predetermined adhesive to the opposing surfaces of the respective block bodies 51, the pair of block bodies 51 are press-fitted between the cloth wall units 33 so as to sandwich the straight reinforcing bar 62 and the joint nut member 28 therebetween. By
As shown in (b) of FIG.
The pair of block main bodies 51 with the joint nut member 28 installed therein are united between the cloth wall units 33, and the resin block 50 is mounted between the cloth wall units 33.

In this case, the anticorrosive paint is applied in advance to the peripheral surfaces of the straight reinforcing bar 62 and the joint nut member 28, and a predetermined adhesive is applied to the opposing surface of each block body 51. Therefore, when the resin block 50 is mounted between the cloth wall units 33, the block main bodies 51 are integrated and the inside of the mounting groove 52 is sealed, and the straight reinforcing bars 62 housed in the mounting groove 52 are formed. And the joint nut member 28 is protected by rust-preventive paint.
2 and the joint nut member 28 are effectively prevented from being corroded for a long period of time.

When disassembling the foundation, the resin block 50 between the cloth wall units 33 and the resin plate 40 between the cloth foundation footing units 23 may be cut and removed with a cutter or the like. By rotating the joint nut member 28 exposed to the outside by using a predetermined tool in this manner, each cloth wall unit 33 via the straight reinforcing bar 62 is separated, and the cloth basic footing unit 23 The cloth foundation footing units 23 are separated by fusing or cutting the not-illustrated rebar.

FIG. 10 is a perspective view for explaining the connection of the basic blocks when the interposed member of another embodiment is used. (B) shows a state in which an interposed member is interposed between the cloth wall units 33, respectively.

In this embodiment, a cast-in-place concrete 70 ((b) in FIG. 10) formed by pouring ready-mixed concrete into an unillustrated frame mold is used as an interposed member. Prior to the formation of the jointed concrete 70, as shown in FIG. 10A, a peeling layer 71 formed by applying asphalt to each of the opposed end faces of the adjacent fabric foundation 13 is formed. Asphalt is also applied to the outer peripheral surfaces of the straight reinforcing bar 62 and the joint nut member 28. After such treatment is performed, a frame mold (not shown) is attached so as to cover the gap between the end faces of the adjacent cloth foundations 13,
Ready-mixed concrete is poured into this frame mold. And
By removing the frame after a predetermined curing period has elapsed, as shown in FIG.
Is formed between the end faces.

According to the jointed concrete 70 of this embodiment, if the jointed concrete 70 is crushed using a tool such as a rock drill at the time of disassembly of the foundation, the jointed concrete 70 is held in the release layer 71. The cloth foundation 1
3 can be easily crushed and separated from the end face of the cloth foundation 13 without damaging the cloth foundation 13, thereby making it possible to easily separate the cloth foundation 13.

FIGS. 11A and 11B are explanatory diagrams for explaining a method of applying a building foundation according to the present invention. FIG. 11A shows a state in which a building area has been subjected to land business, and FIG. (C) shows a state in which the stacking unit 30 is constructed on the footing unit 20, and (d) shows a state in which the foundation is completed.

When constructing the foundation of the building, first, as shown in FIG. 11A, a vertical hole 80 for the foundation is excavated at the foundation construction position in the building area of the site.
Is subjected to land business. As a local business treatment, a rock stone layer 81 laid with rock stone at the bottom of the vertical hole 80 is formed.
A concrete layer 82 having a predetermined thickness is formed by pouring ready-mixed concrete onto the concrete layer 1. Sand is evenly spread on the discarded concrete layer 82 to form a sand layer 83. This sand layer 83
On which the foundation according to the invention is built.

The formation of the sand layer 83 is one feature of the present invention. That is, usually, a powdery dry mortar (blanket mortar) is sprayed on the discarded concrete layer 82, and a foundation made of precast concrete is laid on the blanket mortar, thereby absorbing the moisture of the blanket mortar. The waste concrete layer 82 and the foundation thereon are integrated by solidification by the method described above. However, the foundation of the present invention is a recyclable foundation that can be easily disassembled. Since the removal operation becomes difficult, a sand layer 83 is formed on the discarded concrete layer 82 in place of the empty kneading mortar.

When the sand layer 83 is formed between the discarded concrete layer 82 and the footing unit 20, the unevenness on the surface of the discarded concrete layer 82 and the unevenness on the bottom surface of the footing unit 20 are reduced by the thickness of the sand layer 83. The weight of the building is absorbed by the change and the concrete layer 82 is discarded via the footing unit 20 and the sand layer 83.
Will be equally received.

Next, as shown in FIG. 11B, the footing unit 20 is laid at a predetermined position on the sand layer 83. In the example shown in FIG. 11, a wife footing unit 21 is laid on the left end of the vertical hole 80, and a cloth foundation footing unit 23 is provided on the right side of the wife footing unit 21.
Is laid, and the cloth-based footing unit 23
An intermediate footing unit 22 is laid on the right side of. When laying these footing units 20, as described above with reference to FIGS. 1 to 3, the reinforcing bars 60 are attached to the filling spaces S of the respective footing units 20, and are placed next to each other by the reinforcing bars 60. Footing units 20 are connected to each other.

In this connection operation, when the resin plate 40 is mounted on the reinforcing bar 60 and the footing units 20 are connected to each other, the resin plate 40 is sandwiched between the footing units 20. You.

Next, as shown in FIG. 11C, the stacking unit 30 is laid via the anchor bolt 35 directly above the filling space S of each footing unit 20. In the example shown in FIG. 11C, the wife bundle unit 31 is stacked on the wife footing unit 21, the intermediate bundle unit 32 is stacked on the intermediate footing unit 22, and Basic footing unit 2
The cloth wall unit 33 is stacked on the top 3. The reinforcing bars 60 protruding from the respective end surfaces of the stacking units 30 are connected by the joint nut member 28.

Next, ready-mixed concrete is poured into each filling space S of each footing unit 20 to form a cast-in concrete layer 26. This joint concrete layer 26
The formation of each basic block 10 (wife side foundation 11,
The intermediate foundation 12 and the cloth foundation 13) are connected by the reinforcing bar 60. Finally, (d) of FIG.
As shown in (5), by covering the exposed reinforcing bar 60 and the joint nut member 28 with the resin block 50, the recycling foundation according to the present invention is completed.

FIG. 12 is a perspective view showing an example of a state where a building 90 is constructed on the foundation according to the present invention. As shown in this figure, at the frontage position of the building area, a cloth foundation 13 is interposed between the wife foundations 11 laid at the corners of the building area, and between the wife foundation 11 and the cloth foundation 13. A resin plate 40 and a resin block 50 made of an expandable synthetic resin are interposed.
A predetermined number of intermediate foundations 12 are laid at the same pitch therebetween, and between the wife-side foundation 11 and the intermediate foundation 12 and between the adjacent intermediate foundations 12, the resin plates 40 and A resin block 50 is interposed.

On the wife bundle unit 31 of each wife base 11 and the intermediate bundle unit 32 of the intermediate foundation 12, large pillars 91, which are main structural materials, are erected, and the cloth at the frontage position is provided. A predetermined number of studs 92 are erected on the cloth wall unit 33 of the foundation 13, and a beam is erected between these pillars 91, 92, and a roof material is constructed on the top to form a skeleton of the building 90. Have been.

As described above, the foundation of the building 90 is formed by connecting the respective foundation blocks 10 (the wife-side foundation 11, the intermediate foundation 12, and the cloth foundation 13) via the reinforcing bars 60 not shown in FIG. And the reinforcing bars 60
Is covered with a resin plate 40 and a resin block 50 made of an expandable synthetic resin that is easily broken, so that the building 9
When removing the building 0, after the dismantling work of the building 90 is completed, the resin plate 40 and the resin block 50 can be destroyed to easily expose the connecting reinforcing bar 60 to the outside, and the exposed structure can be obtained. By separating the reinforcing bars 60, each base block 10 can be easily separated.

When the reinforcing bar 60 is blown or cut at the time of the above separation, a male screw is preferably screwed to the tip of the separated reinforcing bar 60. This makes it possible to immediately and easily connect the reinforcing bars 60 of the adjacent base blocks 10 by the joint nut member 28 when the base blocks 10 are recycled.

The foundation blocks 10 separated from each other can be easily removed from the building area by lifting them with a predetermined working machine, and compared with the conventional demolition work using a rock drill. The removal work is much more efficient. Furthermore, once removed, the basic block 10 can be recycled and used as a basis for constructing a new building.

The foundation for a building of the present invention is a footing unit 20 (wife side footing unit 21, intermediate footing unit 22, and cloth foundation footing unit 23).
Are stacked with a stacking unit 30 (wife-side bundle unit 31, intermediate bundle unit 32, and cloth wall unit 33) to form a basic block 10 (wife-side foundation 11, intermediate foundation 12, and cloth foundation 13). Since each base block 10 is connected to each other by a reinforcing bar 60 through an intervening member (resin plate 40 and resin block 50) having easiness of destruction, each base block 10 is located on the site of the building. The base blocks 10 are laid, and the reinforcing bars 60 projecting from the end faces of the base blocks 10 are connected to each other so that the connection portions are buried in the resin plate 40 and the resin blocks 50. Are connected to each other via an interposing member, whereby a foundation is constructed in the site.

As described above, the footing unit 20 and the heavy-duty unit 30 mass-produced in the factory are carried to the construction site, and the intervening members are placed on the predetermined groundwork previously applied to the building area on the site. Footing unit 2 via
The foundation is easily formed by a simple operation of mounting the zero and the stacking unit 30, and simplification and speeding up of the foundation construction can be achieved. In addition, the presence of the interposed members (the resin plate 40 and the resin block 50) made of a foamable synthetic resin can absorb a dimensional error of the basic block 10 at the time of constructing the foundation.

Since the interposed members (the resin plate 40 and the resin block 50) are formed of a material having easiness of destruction such as a foamable synthetic resin, the foundation is disassembled when the building is moved or the like. In this case, it is possible to easily break the interposed member, and by this destruction, it is possible to expose the reinforcing bar 60 connecting the adjacent base block 10 to the outside, and to cut off the exposed reinforcing bar 60. The base block 10 can be easily separated.

The basic blocks 10 separated from each other
Can be removed by a simple operation of lifting with a predetermined work machine, and can be directly loaded on a transport vehicle and transported to a destination.

Therefore, the foundation is crushed with a tool such as a rock drill,
The conventional inconvenience of requiring a lot of labor and a long construction period, such as scooping a large amount of crushed material with a working machine such as a shovel truck and loading it on a transport vehicle, has been resolved, and the disassembly of the foundation has been significantly improved The improved speed and cost reduction are realized, and the base blocks 10 removed from the building area are kept in their original form without being damaged, so that they can be recycled and used more effectively. And contribute to a reduction in energy consumption during disassembly.

The present invention is not limited to the above embodiment, but also includes the following contents.

(1) In the above embodiment, the reinforcing bars 6
Basic blocks 10 adjacent to each other in a connected state by zero
As the interposed member interposed therebetween, a resin plate 40, a resin block 50, and a cast-in-concrete 70 made of an expandable synthetic resin are employed. However, in the present invention, the interposed member is made of an expandable synthetic resin. However, the present invention is not limited to the concrete or the cast concrete 70, but may be other materials, for example, wood or metal. In the case of a metal material, a hood formed by bending a thin metal plate may be placed over the gap between the basic blocks 10. In addition, the appearance of the rebar 60
In such a situation that a complete rust-proofing process is performed, no intervening member need be provided between the basic blocks 10. The reason is that the interposed member does not function as a structural material.

(2) In the above embodiment, the thickness of the bottom plate 24 of the footing unit 20 is set to half of the height of the footing unit 20, but the anchor bolt 35 hanging down from the bottom surface of the stacking unit 30 is used. The height of the filling space S is set in the footing unit 2 in order to make the fixing in the cast-in concrete layer 26 stronger.
0, the filling space S is made deeper by about 2/3 of the height dimension, the burial length of the anchor bolt 35 in the cast concrete layer 26 is increased, or mortar is placed between the bottom plate 24 and the anchor nut 36. It is also possible to adopt measures such as strengthening the connection between the anchor nut 36 and the bottom plate 24 by interposing, or providing a branch rebar in the anchor bolt 35 to enhance the retaining effect.

[0081]

According to the first, fifth and sixth aspects of the present invention, the footing unit and the beam unit are laid on the site of the building, and the reinforcing bars projecting from the end faces of the units are connected. In this state, the connecting portion is buried in the interposed member, so that the footing unit and the beam unit are connected to each other via the interposed member, so that the foundation can be constructed on the site. As described above, the footing unit and the beam unit made of precast concrete mass-produced at the factory are carried to the construction site, and the footing unit and the beam unit are placed on a predetermined groundwork preliminarily applied to the building area on the site. The foundation is easily formed by a simple operation of placing the base, and simplification and speeding up of the foundation construction can be achieved. In addition, the presence of the interposed member can absorb a dimensional error of the footing unit and the beam unit during the construction of the foundation.

Since the interposed member is formed of a material having easiness of destruction, the interposed member can be easily destroyed when the foundation is disassembled for relocation of a building or the like. By this destruction, the reinforcing bar connecting the footing unit and the beam unit can be exposed to the outside, and by separating the exposed reinforcing bar, the foundation block in which the footing unit and the beam unit are integrated can be easily separated. Can be.

The basic blocks separated from each other can be removed by a simple operation of lifting them with a predetermined work machine, and can be directly loaded on a transport vehicle and transported to a destination.

Therefore, the foundation is crushed with a tool such as a rock drill,
The conventional inconvenience of requiring a lot of labor and a long construction period, such as scooping a large amount of crushed material with a working machine such as a shovel truck and loading it on a transport vehicle, has been resolved, and the disassembly of the foundation has been significantly improved Improving speed and cost reduction, and removing the building blocks from the building area without breaking them, keeping them in their original form, enabling recycling and effective use of resources At the same time, it can contribute to a reduction in energy consumption during disassembly.

According to the second aspect of the present invention, the connection between the adjacent beam units is performed by the same connection structure as the connection structure between the footing units, so that the connection between the plurality of beam units is facilitated. And can be easily disassembled. Also, by connecting a plurality of beam units, a foundation corresponding to a large-scale building can be constructed.

According to the third aspect of the present invention, since the interposed member is made of a synthetic resin having a watertight waterproof property, the reinforcing bar projecting from the footing unit and the beam unit has a watertight waterproof property. It is embedded in the synthetic resin material, and can reliably prevent corrosion of the reinforcing steel bar due to intrusion of water or air. In addition, when, for example, an expandable synthetic resin is selected as such a synthetic resin material, the expandable synthetic resin has excellent shape retention properties, can be easily broken, and is a basic material for recycling. It can be suitably used as a material for an interposed member that is presumed to be easily broken at the time of removal.

According to the fourth aspect of the present invention, the footing unit and the beam unit are formed by including the bottom plate and the peripheral wall erected from each edge of the bottom plate, and the space surrounded by the bottom plate and the peripheral wall. After the footing unit is installed in the building area, a reinforcing bar is arranged in the filling space. Then, by performing the operation of projecting this rebar from the notch groove to the outside,
The embedding work for the interposed member of the reinforcing bar can be easily performed. Then, in a state where the interposed member is interposed between the footing unit and the beam unit, the filling space of the footing unit is filled with the solidification material for building, so that the reinforcing bar is embedded in the solidified material for building, and the footing unit and The basic block composed of the beam unit can be entirely stabilized.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing one embodiment of a wife foundation in a building foundation according to the present invention.

FIG. 2 is an exploded perspective view showing one embodiment of an intermediate foundation in a building foundation according to the present invention.

FIG. 3 is an exploded perspective view showing one embodiment of a cloth foundation in the building foundation according to the present invention.

FIG. 4 is a perspective view showing a basic block formed by stacking a stacking unit on a footing unit, (a) is a wife-side base, (b) is an intermediate base, and (c) is a cloth. Each shows the basis.

FIG. 5 is a sectional view taken along the line AA of FIG.

FIG. 6 is a perspective view for explaining a connection structure between fabric-based footing units.

FIG. 7 is a cross-sectional view of a connection structure between fabric-based footing units.

FIG. 8 is a perspective view for explaining a connection structure between an intermediate footing unit and a fabric-based footing unit.

FIGS. 9A and 9B are perspective views for explaining a connection structure between the stacking units, wherein FIG. 9A shows a state before a resin block is mounted between the stacking units, and FIG. Each of the drawings shows a state in which the block is mounted.

FIG. 10 is a perspective view for explaining connection of a base block when an interposed member according to another embodiment is used, and FIG.
Indicates a state in which no interposed member is formed between the cloth wall units, and (b) indicates a state in which an interposed member is interposed between the cloth wall units.

11A and 11B are explanatory diagrams for explaining a method of implementing a building foundation according to the present invention, wherein FIG. 11A shows a state in which a building area has been subjected to land business, and FIG. Shows a state in which the footing unit is constructed, (c) shows a state in which the stacking unit is constructed on the footing unit, and (d) shows a state in which the foundation is completed.

FIG. 12 is a perspective view showing an example of a state in which a building is built on the foundation according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Basic block 11 Wife side foundation 12 Intermediate foundation 13 Cloth foundation 20 Footing unit 21 Wife side footing unit 22 Intermediate footing unit 23 Cloth foundation footing unit 24 Bottom plate 25 Peripheral wall 25a End wall 26 Joint concrete layer 27 Square crenellated 28 Joint nut member 29 Spacer 30 Stacking unit (beam unit) 31 Wife bundle unit 32 Intermediate bundle unit 33 Each fabric wall unit 33 Fabric wall unit 34 Unit body 35 Anchor bolt 36 Anchor nut 40 Resin plate 41 Insertion hole 42 Rubber tube 50 Resin block 51 Block Main body 52 Mounting groove 53 Diameter arc groove 53 Large diameter arc groove 54 Small diameter arc groove 60 Reinforcement 61 Bending rebar 62 Straight rebar 70 Jointed concrete 71 Peeling layer 80 Vertical hole 81 Kuriishi layer 82 Concrete layer 83 Layer 90 building 91 Daihashira 92 studs C producing concrete S filling space

Claims (6)

[Claims] 1. A footing unit made of precast concrete laid on a building site, a beam unit made of precast concrete piled on the footing unit, and a beam unit between and adjacent to the footing unit The footing unit and the beam unit have a reinforcing bar embedded in the interposed member protruding from the mutual connection surface. The basic structure of a building characterized by doing. 2. The beam unit according to claim 1, wherein end surfaces of the plurality of unit beam units are connected to each other via a reinforcing bar projecting from each other, and the reinforcing bar is embedded in the interposed member. The basic structure of a building according to claim 1, wherein: 3. The basic structure of a building according to claim 1, wherein the interposed member is made of a synthetic resin material having a watertight and waterproof property. The footing unit is formed with a bottom plate and a peripheral wall erected from each edge of the bottom plate, and fills a space surrounded by the bottom plate and the peripheral wall with a solidifying material for construction. The basic structure of a building according to any one of claims 1 to 3, wherein a space is formed, and a part of the peripheral wall is provided with a notch groove into which the rebar having an open upper part is fitted. . 5. An execution method of a building foundation for constructing a foundation of a building using the foundation structure of a building according to claim 1, wherein the footing unit and the beam in a building area in a building site are provided. The location where the unit is to be laid is excavated to a predetermined depth, and the rubble stone is laid in the excavation trench formed by this digging to form a rubble stone layer, and the discarded concrete is poured onto the rubble stone layer and the concrete layer is dropped. And laying sand on the discarded concrete layer to form a sand layer, and laying the footing unit and the beam unit on the sand layer via the interposed member in a state where the rebar is buried. The method of implementing a building foundation characterized by doing. 6. A method for constructing a building foundation using the foundation structure of a building according to claim 4, wherein the footing unit and the beam unit in a building area in a building site are laid. Excavation is performed at a predetermined depth to a predetermined depth, and a rubble stone is laid in a digging groove formed by this digging to form a rubble stone layer, and a trash stone is cast on the lithite layer to form a discard concrete layer. Laying sand on the discarded concrete layer to form a sand layer, laying the footing unit and the beam unit on the sand layer via the interposed member in a state where the rebar is buried, A method for implementing a building foundation, characterized by laying a filler in a filling space of a footing unit.