JPH0841905A - Structure of basement - Google Patents

Abstract

PURPOSE:To simplify a structure against earth pressure by forming a building unit frame including a lower beam, and laying the lower beam on a deep foundation. CONSTITUTION:Inner wall panels 22, 23 are attached along the insides of right and left wall parts 13, 14, and a floor panel 24 is attached along the upper face of a base part 15 in a space 3 for a basement enclosed by a deep foundation 1, and the basement is finished of the panels 22-24 or the like. The long sidle lower beam 9 of a building unit 5 is laid on the upper part 1A of the deep foundation 1 so as to span the right and left wall parts 13, 14. Vertically extending bar arrangement materials 16, 17 are provided inside the wall parts 13, 14 on the right and left of the deep foundation 1, and the positions of the bar arrangements 16, 17 are made to coincide with the positions of the column 6 and of the long side lower beam 9 of the building unit 5. Thus the long side lower beam 9 is also used for a beam for effectively supporting earth pressure F acting on the deep foundation 1 by the lower beam 9, and a horizontal beam can therefore be removed to simplify the structure of the basement.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a basement structure,
Especially, it can be used for the building where the space surrounded by the deep foundation is the space for the basement.

[0002]

[Background Art] In order to provide a basement room for a storage space in a building, a deep foundation is installed in the ground, and the space surrounded by this deep foundation is used as a basement space, and at the top of the deep foundation protruding above the ground. It is known that an above-ground building is constructed (Japanese Patent Laid-Open No. 2-125071).

[0003]

Thus, when a deep foundation for the space for the basement is provided in the ground, earth pressure from the surroundings acts on the deep foundation. For this reason, in the past, it was necessary to bridge a horizontal beam such as a gaze beam on the upper part of the deep foundation projecting above the ground, and to support earth pressure with this horizontal beam.
According to this, a horizontal beam must be provided on top of the deep foundation in addition to the above-ground building, which results in a complicated structure and a large number of required members.

An object of the present invention is to provide a basement structure capable of simplifying the structure for supporting earth pressure and reducing the number of required members.

[0005]

In the basement structure according to the present invention, a deep foundation is provided in the ground, the space surrounded by the deep foundation is used as a space for the basement, and the deep foundation protrudes above the ground. The building unit that constitutes the above-ground building is fixed to the upper part of the building, and the lower beam that forms the frame of this building unit is laid over the deep foundation.

In the above, the deep foundation may be formed of cast-in-place concrete or precast concrete (PC). Further, the deep foundation may be a retaining wall around the basement.

A reinforcing bar is provided inside the deep foundation, and the reinforcing bar is connected to the lower beam of the building unit. These reinforcements and lower beams form a rectangular frame that surrounds the left and right sides, the lower side, and the upper side of the vertical plane of the basement space.

The building unit is provided with a reinforcing beam which is parallel to the lower beam and bridges over the deep foundation. When such a reinforcing beam is provided in the building unit, a reinforcing bar is provided inside the deep foundation, and the reinforcing bar is connected to the reinforcing beam.

[0009]

In the present invention, the aboveground building constructed on the upper part of the deep foundation is composed of building units, and the frame of this building unit is formed to include the lower beam, and this lower beam is bridged over the deep foundation. The earth beam acting on the deep foundation can be effectively supported by the lower beam, and the lower beam of the building unit doubles as the conventional horizontal beam, so the structure can be simplified and the number of members can be reduced. .

Further, when the lower beam of the building unit is connected to the reinforcing bar provided inside the deep foundation, the strength of the basement due to the deep foundation can be increased, and further, the reinforcing bar and the lower beam are , If a square frame surrounding the four sides of the left and right sides, the lower side, and the upper side of the vertical surface of the basement space is formed,
The strength of the basement can be further increased.

When the building unit is provided with a reinforcing beam which is parallel to the lower beam and bridges over the deep foundation, the earth pressure acting on the deep foundation can be supported also by the reinforcing beam. Can be more effectively supported. With this reinforcement beam,
The strength of the basement is even greater when connected to the reinforcing bar provided inside the deep foundation.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a deep foundation 1 and a shallow foundation 2 provided in the ground, and these foundations 1 and 2 are connected.
The underground space surrounded by the deep foundation 1 serves as a basement space 3, and an aboveground building 4 is constructed on the upper portion 1A of the deep foundation 1 and the upper portion 2A of the shallow foundation 2 which project above the ground. This ground building 4
Is a unit-type building configured by combining a plurality of building units 5. Four building units 5 are shown in FIG. 1, but in this embodiment, the upper part 1A of the deep foundation 1 and the upper part of the shallow foundation 2 are shown. Two building units 5 are arranged together in 2A. These building units 5 are first floor building units, and the second floor building units may be loaded on them.

As shown in FIG. 2, the skeleton of each building unit 5 has four pillars 6 at four corners and two long side beams 7 connecting the upper ends of these pillars 6, respectively. Short side beam 8
And each of the two long-side lower beams 9 and the short-side lower beams 10 that join the lower ends of the columns 6 to each other. Materials, floor materials, etc. are attached.

As shown in FIG. 1, the deep foundation 1 has a front wall portion 1 on the south side.
1, the rear wall portion 12 on the north side, the left and right wall portions 13 and 14,
The space including the base portion 15 shown in FIG. 2 and surrounded by the wall portions 11 to 14 made of cast-in-place concrete or precast concrete and the base portion 15 is the above-mentioned basement space 3. The long-side lower beam 9 of each building unit 5 is laid across the upper portion 1A of the deep foundation 1 so as to straddle the left and right wall portions 13 and 14.

As shown in FIG. 2, inside the left and right wall portions 13 and 14 of the deep foundation 1, vertically extending bar arrangement materials 1 are provided.
6 and 17 are provided. Further, inside the base portion 15, there is provided a bar arrangement member 18 that is connected to the bar arrangement members 16 and 17 and extends to the left and right. The positions at which the reinforcing bars 16 to 18 are provided coincide with the positions of the columns 6 and the long-side lower beams 9 of each building unit 5. The bar arrangement materials 16 to 18 are the left and right wall portions 1
3, 14 and the base portion 15 are main reinforcements of the basic reinforcement reinforcements composed of main reinforcements and auxiliary reinforcements embedded in the interior of the base 15, and auxiliary reinforcements are not shown in the drawing.

As shown in FIG. 3, at least the bar arrangement members 16 and 17 among the bar arrangement members 16 to 18 are formed of a prismatic column member like the column 6 of the building unit 5, and the upper end thereof is formed by the deep foundation 1. Is exposed at the upper part 1A of the. A sheath tube 19 is inserted and fixed to the upper portions of the bar arrangement materials 16 and 17, and
Is filled with grout material 20.

The building unit 5 produced at the factory is hoisted by a crane at the construction site,
An anchor member 21 is screwed to the lower end of the pillar 6. The building unit 5 is gradually lowered by a crane, and the anchor member 21 is used for the grout material 20 of the sheath tube 19.
Is inserted into. When the grout material 20 is hardened, the long-side lower beam 9 of the building unit 5 is connected to the reinforcement members 16 and 17 shown in FIG. 2 through the pillar 6, the anchor member 21, the grout material 20, and the sheath tube 19. And, moreover, bar arrangement 1
It is also connected to the reinforcing bar 18 via 6 and 17.

As shown in FIG. 4, in the basement space 3 surrounded by the deep foundation 1, inner wall panels 22 and 23 are provided along the inner side surfaces of the left and right wall portions 13 and 14, and along the upper surface of the base portion 15. Floor panels 24 are attached respectively, and the basement is finished by these panels 22 to 24 and the like. This basement is used as a storage space or a living space, and is connected to the above-ground building 4 by a stairway (not shown).

In this embodiment, as shown in FIGS. 1 and 2, the front wall portion 11 of the deep foundation 1 is formed with a protrusion 25 protruding forward, and the inside of the protrusion 25 is formed. Serves as a dry area 26 for performing daylighting and ventilation in the basement, and for this reason, the front wall portion 11 is provided with a cutout portion 27 for communicating the dry area 26 with the basement.

As shown in FIG. 2, two reinforcing beams 28 parallel to the lower beam 9 are provided at the center of the two long-side lower beams 9 for one building unit 5. It may be provided between the short side lower beams 10 of the book. In this way, the reinforcing beam 28
The left and right wall portions 1 that correspond to the reinforcing beams 28
Reinforcing bar 29 at the inner positions of 3, 14 and the base portion 15.
~ 31 are provided and connected to each other. The reinforcement beams 28 and the reinforcement reinforcements 29 and 30 are connected to the short side lower beams 10 as shown in FIG.
An anchor member similar to the anchor member 21 shown in FIG. 3 is attached, a sheath tube similar to the sheath tube 19 is inserted and fixed inside the upper portions of the reinforcing bar members 29, 30, and the grout material filled in the sheath tube is anchored. This is done by inserting a member. As a result, the reinforcing beam 28 is bridged over the upper portion 1A of the deep foundation 1 while being joined to the deep foundation 1.

According to this embodiment described above, the above-ground building 4 is composed of a plurality of building units 5, and the lower beam 9 forming the skeleton of these building units 5 is mounted on the upper portion 1A of the deep foundation 1. As shown in FIG. 4, the earth beam F acting on the deep foundation 1 can be effectively supported by this lower beam 9, that is, the lower beam 9 acts as a beam for receiving the earth pressure F. In this embodiment, it is not necessary to provide a horizontal beam such as a gaze beam to support earth pressure.
Since the horizontal beam can be omitted, the structure can be simplified and the number of members can be reduced.

Further, since the lower beam 9 is connected to the reinforcing bars 16 to 18 provided inside the deep foundation 1, these reinforcing bars 16 to 18 also support the earth pressure F and increase the strength of the basement. Can be made bigger. In particular, the reinforcing bars 16 to 18 and the lower beam 9 form a rectangular frame surrounding the four sides of the left and right sides, the lower side, and the upper side in the vertical plane of the space 3 for basement, and the rectangular frame is a frame of the building unit 5. The left and right columns 6 and the lower beam 9,
Since it is the same as the rectangular frame by the upper beam 7, the strength of the basement can be increased similarly to the building unit 5.

Further, the reinforcing beam 2 described above is added to the building unit 5.
8 is provided and the reinforcing beam 28 is bridged over the upper portion 1A of the deep foundation 1, the earth pressure F shown in FIG.
However, it becomes possible to support the earth pressure F more effectively.

Further, when the reinforcing bar members 29 to 31 connected to the reinforcing beam 28 are provided inside the deep foundation 1, earth pressure F
The strength of the basement is further improved, and a large-scale basement can be formed.

The pillars 6 and the long-side lower beams 9 of each building unit 5 are arranged in the deep foundation 1 with the reinforcing bar members 16 and 1
It is also possible to provide a connecting beam connecting the seven members inside the deep foundation 1 and thereby form the above-mentioned main bars of the deep foundation 1 three-dimensionally.

Further, in the above-mentioned embodiment, the building unit 5 constituting the above-ground building 4 includes the anchor member 2 on the deep foundation 1.
1 and the sheath tube 19 filled with the grout material 20 were fixed, but the fixing method is not limited to this.
For example, an anchor bolt protruding upward from the deep foundation 1 may be coupled to the reinforcing bar members 16 and 17, and the building unit 5 may be fixed to the deep foundation 1 by this anchor bolt.

Further, in the above-mentioned embodiment, the basement is formed below the three building units 5, but in the present invention, one or two, or four or more building units 5 are provided below. It can also be applied when setting up a basement in
Further, the whole ground building 4 may not be configured by building units, but a part of the ground building may be configured by a frame construction method, a panel construction method, or the like other than the unit construction method.

Further, although the deep foundation 1 is provided with the projecting portion 25 forming the dry area 26 in the above-mentioned embodiment,
The present invention can be applied even when such a protrusion is not provided.

[0029]

According to the present invention, the above-ground building constructed on the upper part of the deep foundation is composed of building units, and the lower beam of this building unit is laid on the deep foundation,
Since the earth pressure acting on the deep foundation can be supported by this lower girder, and it is not necessary to install a horizontal girder or other horizontal girder, it is possible to simplify the structure against earth pressure and the number of members. Can be reduced.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a foundation showing a ground building in a simplified manner.

2 is a cross-sectional perspective view showing the building unit and the deep foundation shown in FIG. 1. FIG.

FIG. 3 is an exploded perspective view showing a method of connecting a building unit and a deep foundation.

FIG. 4 is a vertical sectional view of a basement showing earth pressure acting on a deep foundation.

[Explanation of symbols]

 1 Deep foundation 1A Upper part 3 Space for basement 4 Ground building 5 Building unit 6 Pillar 7,8 Upper beam 9,10 Lower beam 16-18 Reinforcing bar 26 Dry area 28 Reinforcing beam 29-31 Reinforcing bar

Claims (5)

[Claims] 1. A deep foundation is provided in the ground, a space surrounded by the deep foundation is used as a basement space, and a building unit constituting an above-ground building is fixed to an upper portion of the deep foundation protruding above the ground, A basement structure characterized in that a lower beam forming the framework of this building unit is laid over the deep foundation. 2. The basement structure according to claim 1,
A basement structure, wherein a reinforcing material connected to the lower beam is provided inside the deep foundation. 3. The basement structure according to claim 2,
The basement structure, wherein the reinforcing bar and the lower beam form a rectangular frame that surrounds the four sides of the left and right sides, the lower side, and the upper side in the vertical plane of the basement space. 4. The basement structure according to any one of claims 1 to 3, wherein the building unit is provided with a reinforcing beam which is parallel to the lower beam and bridges over the deep foundation. Basement structure characterized by that. 5. The basement structure according to claim 4,
A basement structure characterized in that a reinforcing bar member connected to the reinforcing beam is provided inside the deep foundation.