JP5769103B2 - Basement installation structure - Google Patents

Description

  The present invention relates to a basement installation structure, and more particularly, to a basement installation structure using a liner plate that is installed in a ground below a building foundation while supporting a load from the building.

  For example, in a relatively small building such as a residential building, it is extremely rare that a basement is provided because construction is difficult and construction costs are expensive. There is a demand for providing a basement even in a relatively small-scale building for the purpose of making it possible to make effective use of the building and to form an indoor space with excellent heat insulation and sound insulation.

  When forming a basement in a building, the basement frame must be strong enough to withstand earth pressure and water pressure from the surrounding ground, so for example, the ground below the building was excavated and a formwork was installed. Later, a method of constructing with on-site cast concrete by placing concrete is generally employed. In addition, a technique has been developed that enables efficient construction of a basement frame without using cast-in-place concrete, or construction with high accuracy (see, for example, Patent Document 1, Patent Document 2, and Patent Document 3).

Japanese Patent Laid-Open No. 50-141811 JP-A 61-290123 Japanese Patent Laid-Open No. 10-280435 JP 2002-295170 A JP 2010-65400 A

  However, according to the construction method of the underground structure and basement described in Patent Documents 1 to 3, the construction is easy, but the cylinder made of precast concrete, the cylinder made of steel plate with a considerable thickness, Since the basement frame is constructed using the segments used in the shield method, the construction becomes large and the overall construction cost of the building becomes expensive.

  On the other hand, a liner plate is known as a simple retaining material mainly used in civil engineering work (see, for example, Patent Document 4 and Patent Document 5). The liner plate is a member formed to process a thin steel plate having a thickness of, for example, about 2.7 to 7 mm so that the longitudinal section has a corrugated shape, and to have a horizontally-long rectangular front shape. (See FIGS. 4A to 4C). In addition, the liner plate is formed so as to have a planar shape such as an arc shape, a straight shape, and an L shape so that it can be connected integrally in the circumferential direction to form a circular peripheral wall having a circular shape, an oval shape, a rectangular shape, or the like. Further, a circumferential flange portion for joining is provided at the upper and lower edges of the horizontally long rectangular front shape, and an axial flange portion for joining is provided at the left and right edges, respectively.

  Then, the plurality of liner plates are joined and integrated in the circumferential direction through the longitudinal joint portion by the axial flange portion, and these are stacked in a plurality of stages, via the lateral joint portion by the circumferential flange portion. By joining and integrating in the vertical direction, it is possible to easily and easily form an annular peripheral wall of a desired height as a retaining wall that efficiently and effectively supports earth pressure and water pressure from the surrounding ground. It has become. Such retaining walls made of liner plates are often used, for example, when constructing a shaft for a propulsion method in a civil engineering work, a shaft for a deep foundation method, a drainage well, or the like.

  In addition, it is convenient if a basement can be provided without increasing the construction cost by using an annular peripheral wall as a simple retaining wall with such a liner plate as a frame of a basement installed below the building. However, the conventional annular peripheral wall by the liner plate can effectively support earth pressure and water pressure from the surrounding ground, but it is not intended to support the vertical load, so the liner plate In order to be able to use the annular peripheral wall by as a basement frame, new technology needs to be developed.

  In the present invention, the liner plate can be used to effectively support the earth pressure and the water pressure without increasing the construction cost, and the basement can be efficiently provided, and the load from the building is stable. The object is to provide a basement installation structure that can be supported.

The present invention is a basement installation structure using a liner plate that is installed in the ground below the foundation of a building while supporting a load from the building, and includes a pressure-resistant bottom plate and a peripheral portion of the pressure-resistant bottom plate. An annular peripheral wall formed by the liner plate provided upright, and vertically installed along the inner peripheral surface of the annular peripheral wall, the upper base portion is closely attached to the foundation of the building, and the lower base portion is by brought into close contact with the pressure-resistant bottom plate, under load from the building is configured to include a plurality of rod support members for transmitting the pressure-resistant bottom plate, the breakdown voltage bottom plate is made of concrete bottom plate, wherein The rod-shaped support member is made of a steel pipe member, and the lower base portion achieves the above object by providing a basement installation structure made of a jack base .

  In the basement installation structure of the present invention, the rod-shaped support member is connected to a lateral joint portion by a circumferential flange portion of the liner plate assembled in a plurality of stages, so that the buckling length is reduced. It is preferable to be configured to be shorter.

In the basement installation structure of the present invention, a part of the annular peripheral wall of the pressure-resistant bottom plate and the liner plate is provided so as to protrude outward from a portion immediately below the foundation of the building, and the liner plate of the protruding portion is provided. The underground space inside the annular peripheral wall can be a dry area part.

  According to the basement installation structure of the present invention, by using the liner plate, the basement can be efficiently provided by effectively supporting earth pressure and water pressure without increasing the construction cost, and from the building. Can be supported in a stable state.

1 is a schematic perspective view illustrating a basement installation structure according to a preferred embodiment of the present invention. 1 is a schematic top view illustrating a basement installation structure according to a preferred embodiment of the present invention. It is a partially broken schematic expanded side view along the AA of FIG. 2 explaining the installation structure of the basement which concerns on preferable one Embodiment of this invention. (A) is a front view of a liner plate, (b) is a sectional view along BB of (a), and (c) is a top view. It is an expanded sectional view explaining the junction part by the flange part of a liner plate. It is the C section expanded sectional view of FIG. It is sectional drawing along DD of FIG. The installation structure of the basement which concerns on other preferable embodiment of this invention is demonstrated, (a) is a schematic perspective view, (b) is a schematic top view, (c) is along EE of (b). It is a schematic sectional drawing.

  As shown in FIGS. 1 to 3, the basement installation structure 10 according to a preferred embodiment of the present invention is a building, for example, a liner plate 12 (FIG. a) to (c)) is used as an installation structure for providing the basement 13.

  Here, the liner plate 12 is a known member as a simple retaining material mainly used in civil engineering work, and has a thickness of about 2.7 to 7 mm, for example, as shown in FIGS. It is possible to assemble thin steel plates that have a longitudinal cross-section with a corrugated shape, and can be assembled manually by workers, for example, with a rectangular front shape with a height of about 500 mm. It is a lightweight lightweight retaining member. Further, the liner plate 12 is connected in the circumferential direction, and has an arcuate planar shape with a curvature radius of about 3250 mm, for example, so that a cylindrical annular peripheral wall 14 (see FIG. 2) with a diameter of about 6500 mm can be formed. It is formed as follows. A circumferential flange portion 12a for joining provided with a plurality of bolt holes at the upper and lower edges of the horizontally long rectangular front shape of the liner plate 12, and a joining shaft provided with a plurality of bolt holes at the left and right edges. Directional flange portions 12b are respectively provided.

  As in the known method, the liner plate 12 covers the side wall surface of the excavated hole while digging the ground surface, for example, and the liner plate 12 is installed as the digging progresses. Below 12, the lower liner plate 12 can be installed in the ground by a method of inserting it sequentially covering the excavation wall surface. In addition, the installed liner plate 12 is annularly joined and integrated in the circumferential direction via a longitudinal joint portion by the axial flange portion 12b, and via a lateral joint portion by the circumferential flange portion 12a. Bonded and integrated in the vertical direction. As a result, the liner plates 12 assembled in a ring shape are stacked in a plurality of stages, and the annular peripheral wall 14 having a desired height is mainly used as a retaining wall that effectively supports earth pressure and water pressure from the surrounding ground. It is easily and easily formed by the manual operation of the worker.

  And the basement installation structure 10 of this embodiment uses the above-mentioned liner plate 12, and has installed the basement 13 in the ground below the foundation 11 of the housing building which is a building in the state which supported the load from a building. As shown in FIGS. 1 to 3, an installation structure for installation includes a pressure-resistant bottom plate 15, an annular peripheral wall 14 formed by a liner plate 12 erected from a peripheral portion of the pressure-resistant bottom plate 15, and an annular peripheral wall 14 is erected in the vertical direction along the inner peripheral surface of 14, and the upper base 16 is brought into close contact with the foundation 11 of the building, and the lower base 17 is brought into close contact with the pressure-resistant bottom plate 15, thereby receiving a load from the building. And a plurality of rod-shaped support members 18 that are transmitted to the pressure-resistant bottom plate 15.

  Further, in this embodiment, as a part of the annular peripheral wall 14 formed by the pressure-resistant bottom plate 15 and the liner plate 12, substantially half of these are provided so as to protrude outward from the portion directly below the foundation 11 of the building. The underground space inside the annular peripheral wall 14 by the liner plate 12 in the part is a dry area 19.

  In this embodiment, the foundation 11 of a residential building which is a building is a solid foundation composed of a foundation slab 11a and a rising portion 11b. For example, the width is about 5 to 20 m and the length is about 5 to 20 m. It is formed in a horizontally long, substantially rectangular shape. The foundation 11 can be easily formed using, for example, reinforcing bars or concrete after laying and leveling foundation crushed stone or the like. In FIGS. 1 to 3 and the like, only the portion of the foundation 11 is shown by omitting the main body portion of the residential building above the foundation 11.

The pressure-resistant bottom plate 15 constituting the basement installation structure 10 of the present embodiment is a concrete bottom plate. For example, by the above-described method, the ground of a planned building location of a residential building is predetermined while the liner plate 12 is installed. After forming the annular peripheral wall 14 by digging up to a depth of, and further digging the ground at the bottom of the annular peripheral wall 14 and laying the ground crushed stone, etc., arranging reinforcing reinforcing bars as appropriate, placing concrete It can be easily formed by curing. In the present embodiment, the pressure-resistant bottom plate 15 is formed with a thickness of about 100 to 300 mm, for example.

  In the present embodiment, as described above, the annular peripheral wall 14 is connected to the plurality of liner plates 12 in the circumferential direction by digging the ground of the planned construction site of the house building to a predetermined depth while installing the liner plate 12. Are assembled into a circular ring shape, and such ring-shaped ones are stacked, for example, in eight steps, thereby forming a cylindrical retaining wall having a diameter of about 6500 mm and a height of about 4000 mm, for example. Is done.

  As shown in FIG. 5, the annular peripheral wall 14 is interposed between the laterally joined portions of the circumferential flange portions 12 a of the liner plates 12 stacked in a plurality of stages, as in the case of a shaft using a known liner plate. As described above, the reinforcing steel material 20 made of H-shaped steel or the like can be attached. Thereby, the annular peripheral wall 14 can be reinforced easily and effectively. The reinforcing steel material 20 can function as a reinforcing ring by joining and integrating unit members bent into a circular shape in a ring shape in the circumferential direction via the joint plate 20a. The reinforcing ring made of the reinforcing steel material 20 does not need to be provided in all the lateral joints of each stage of the liner plate 12 stacked in a plurality of stages. For example, it is provided in the circumferential direction along one or two lateral joints. Accordingly, the annular peripheral wall 14 can be easily and effectively reinforced.

  In addition, the annular peripheral wall 14 of the assembled plurality of liner plates 12 is subjected to a water stop treatment or the like, similar to a well shaft or the like using a known liner plate, and as shown in FIG. The heat insulating material 21 can be attached to cover the surface. Further, for example, foam mortar is used as the backing material 22 in the gap between the outer peripheral wall 14 and the side wall surface of the excavated drilling hole through the injection hole formed in the annular peripheral wall 14. By injecting and filling by work from the inside of 14, it becomes possible to stably support the earth pressure and water pressure from the surrounding ground by the annular peripheral wall 14.

The rod-shaped support member 18 standing in the vertical direction along the inner peripheral surface of the annular peripheral wall 14 can be a steel pipe member such as a single pipe . By using a single pipe pipe generally used at a construction site as the rod-shaped support member 18, the installation structure 10 can be formed at a lower cost. Further, the upper base portion 16 and the lower base portion 17 provided at the upper end portion and the lower end portion of the rod-shaped support member 18 are used together with a pipe member such as a single pipe pipe to increase the ground contact area. It can be formed using various base members such as a base. Moreover, the lower base part 17 can be formed using the well-known jack base provided with the jack part which can be raised-lowered . By using the jack base, the height of the rod-shaped support member 18 is raised in an adjustable manner so that the upper base portion 16 and the lower base portion 17 are firmly and more stable on the building foundation 11 and the pressure-resistant bottom plate 15. It becomes possible to adhere in a state.

  Further, in the present embodiment, the rod-like support member 18 is preferably connected to a lateral joint portion of the liner plate 12 assembled in a plurality of stages by the circumferential flange portion 12a, as shown in FIGS. Therefore, the buckling length is shortened. That is, in the present embodiment, the rod-shaped support member 18 is formed at a plurality of positions in the middle portion thereof, for example, by using the U-shaped metal fitting 23 provided with a bolt fastening hole at the end portion of each step by the circumferential flange portion 12a. In a state where it is connected to the lateral joint, it is erected in the vertical direction (longitudinal direction). By connecting the rod-shaped support member 18 to the lateral joint portion by the circumferential flange portion 12a, the buckling length of the rod-shaped support member 18 is shortened, and the rod-shaped support member 18 further stabilizes the state. It is possible to support the vertical load from the building.

  The number, arrangement pitch, thickness, etc., of the rod-like support members 18 arranged upright along the inner peripheral surface of the annular peripheral wall 14 take into consideration the load from the building, the size of the basement 13 and the like. Can be set as appropriate.

Further, when the base 11 of the building is formed above the basement 13 formed by the annular peripheral wall 14, for example, a slab formwork is assembled by supporting it with a large number of pipe supports arranged inside the annular peripheral wall 14. After that, the foundation 11 of the upper part of the basement 13 can be easily formed by placing concrete. The pipe support that supports the slab form can also be diverted as the rod-shaped support member 18.

  In the present embodiment, as shown in FIGS. 1 to 3, the substantially semicircular portion of the underground space surrounded by the pressure-resistant bottom plate 15 and the annular peripheral wall 14 that protrudes outward from the portion immediately below the foundation 11 of the building is the dry area portion. It is 19. That is, in the present embodiment, the underground space inside the annular peripheral wall 14 is formed by the central partition wall 24 and the basement 13 having a substantially semicircular planar shape by the portion immediately below the foundation 11 of the building, and immediately below the foundation 11 of the building. It is partitioned into a dry area portion 19 having a substantially semicircular planar shape by a portion protruding outward from the portion. The central partition wall 24 is provided with an opening 25 having a large opening area to which a sweep window or the like is attached, for example, so that residents can enter and exit the basement 13 and carry in the goods smoothly. Can be done. Moreover, lighting and ventilation to the basement 13 can be effectively performed.

  Further, in the present embodiment, the dry area 19 is provided with an elevating trap 26 that allows entry and exit from the ground surface outside the dry area 19 and surrounds the periphery of the dry area 19. A handrail 27 for preventing the fall is provided (see FIG. 3).

  The basement 13 and the dry area part 19 formed by the pressure-resistant bottom plate 15 and the annular peripheral wall 14 can be subjected to interior finishing by performing various known interior constructions.

  And according to the installation structure 10 of the basement of this embodiment provided with the above-mentioned structure, earth pressure and water pressure can be effectively applied in the ground below the foundation 11 of the residential building without increasing the construction cost. It is possible to efficiently support the basement 13 and to support the load from the building in a stable state.

  That is, according to the basement installation structure 10 of the present embodiment, the liner plate 12 that is a standard product that is easy to handle and the rod-shaped support member 18 such as a single pipe pipe are used in the same manner as the established conventional method. By constructing the annular peripheral wall 14 or forming the pressure-resistant bottom panel 15 mainly by the manual work of the workers, the basement can be formed inexpensively and efficiently without increasing the construction cost. And the original function of the assembled liner plate 12 can effectively support earth pressure and water pressure from the surrounding ground.

  In addition, the vertical load from the building can be supported in a stable state by a plurality of rod-shaped support members 18 that are vertically arranged along the inner peripheral surface of the annular peripheral wall. Since the large load from the building is not directly transmitted to the liner plate 12, the annular peripheral wall 14 by the liner plate 12 can be designed by the same examination technique as in the prior art.

  Furthermore, since the liner plate 12 and the rod-shaped support member 18 are members made of, for example, steel and excellent in durability, the basement 13 and the dry area 19 can be formed as a stable long-term structure. Moreover, since the basement 13 and the dry area part 19 are formed by the underground space where a planar shape is circular, it becomes possible to provide the basement 13 and the dry area part 19 as a fashionable round type space rich in design.

The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the annular peripheral wall does not necessarily need to be assembled into a cylindrical shape with a circular planar shape, and can be assembled with a liner plate, assembled into a cylindrical shape with other planar shapes such as oval and rectangular, A basement can be formed. The rod-shaped support member may be a steel pipe member having a square cross section in addition to a circular cross section.

  Furthermore, it is not always necessary to provide a dry area part by protruding a part of the annular peripheral wall of the pressure-resistant bottom plate and the liner plate from the part directly below the foundation of the building, as shown in FIGS. 8 (a) to 8 (c). Alternatively, the entire pressure-resistant bottom plate 15 and the annular peripheral wall 14 may be provided directly below the foundation 11 of the building, and the entire underground space surrounded by the pressure-resistant bottom plate 15 and the annular peripheral wall 14 may be the basement 13. In this case, an opening can be provided in the foundation 11 of the building so that the basement 13 can be directly accessed from the building.

DESCRIPTION OF SYMBOLS 10 Basement installation structure 11 Residential building (building) foundation 11a Foundation slab 11b Rising part 12 Liner plate 12a Circumferential flange part 12b Axial flange part 13 Basement 14 Annular peripheral wall 15 Pressure-resistant bottom board 16 Upper base part 17 Lower base part 18 Rod-shaped support member 19 Dry area 23 U-shaped bracket 24 Central partition wall 25 Opening (sweep window)
26 Elevating turret 27 Handrail

Claims (3)

A basement installation structure using a liner plate that is installed in the ground below the foundation of the building while supporting the load from the building,
A pressure-resistant bottom plate, an annular peripheral wall by the liner plate provided upright from a peripheral portion of the pressure-resistant bottom plate, and a vertical base along an inner peripheral surface of the annular peripheral wall, and an upper base portion is provided in the building It is configured to include a plurality of rod-shaped support members that receive a load from a building and transmit the load to the pressure-resistant bottom plate by closely contacting the foundation of the lower base portion to the pressure-resistant bottom plate ,
The pressure-resistant bottom board is a concrete bottom board, the rod-shaped support member is a steel pipe member, and the lower base part is a basement installation structure comprising a jack base .   The rod-shaped support member is configured to be connected to a lateral joint portion by a circumferential flange portion of the liner plate assembled in a plurality of stages, so that a buckling length thereof is shortened. The basement installation structure described. A part of the annular peripheral wall by the pressure-resistant bottom plate and the liner plate is provided so as to protrude outward from a portion immediately below the foundation of the building, and the underground space inside the annular peripheral wall by the liner plate of the protruding portion is: The basement installation structure according to claim 1 or 2 , wherein the basement is a dry area.

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