JPH06167028A - Building - Google Patents

Abstract

PURPOSE:To reduce the amount of dug soil and to increase an used space by suspending an underground part containing the lowermost end of the underground part of a building on an upper structure part connected to the upper side of the underground part, and supporting the upper structure part on the ground base. CONSTITUTION:Plural piles 1 are disposed on the outer periphery of an underground part B, and a foundation beam 2 for supporting the lower end of the ground part F is connected to the upper ends of the piles 1. The upper end of the underground outer wall 7 of the underground pat B made of RC is connected to the foundation beam 2 to be suspended and supported. Thus, a column for transmitting the load of the upper structure part to the underground part B and the foundation beam on the lower side of the underground part are not required, the number of bodies of equipment and the dug soil amount can be reduced so as to construct a building at a low cost.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a building having an underground portion such as a basement or an underground parking lot.

[0002]

2. Description of the Related Art Conventionally, a foundation has been constructed on the lower side of the underground portion, the underground portion is supported by the foundation, and the upper structure portion is supported by the underground portion. That is, the load of the superstructure was supported by the foundation via the underground.

[0003]

However, the above conventional technique has the following drawbacks. <1> In order to transfer the load of the upper structure part to the foundation through the underground part, as the underground part, one having the ability to transfer the load of the upper structure part to the foundation, that is, a pillar having a performance commensurate with the load of the upper structure part Was required, and the number of skeletons in the underground structure was large. Therefore, it is costly, and it takes time, labor, and cost to carry it to the site, such as construction materials (concrete, rebar, steel frame, etc.) and construction materials (formwork, scaffolding, etc.) It was necessary to build the basement, and the construction period was also required as an underground part with pillars. <2> Because the foundation and foundation beams are located below the underground part,
At the time of excavation, it is necessary to excavate the foundation bottom level deeper than the underground bottom level. As a result, the excavation depth becomes deeper, the work amount of excavation itself and the amount of excavated soil increase, and the rooting depth of the retaining wall also becomes deeper, resulting in a large-scale work as a whole. And
The disadvantages of the above <1> and <2> are particularly remarkable when the mountain retaining wall is formed on the periphery. In other words, if a cliff wall is provided, the pillar core of the superstructure and the pile core are likely to be eccentric due to the existence of the cliff wall, and in such a case, a large eccentric moment acts on the foundation. It is necessary for the foundation to process a large eccentric moment, and the foundation beam has a large cross section. As a result, the number of skeletons is further increased, and the excavation depth, excavated soil volume, and retaining wall The depth of rooting deepens. <3> Since a space for arranging pillars is required in the basement, the shape and size of the space used in the basement, underground parking lot, etc. are easily restricted by the arrangement of the pillars and the space. . The object of the present invention is to build a physical quantity,
The aim is to reduce the amount of excavated soil and increase the space used.

[0004]

A feature of a building according to the present invention is that an underground portion including a lowermost end of the underground portion is suspended and supported by an upper structural portion connected to an upper portion thereof, and the upper structural portion is grounded. It is a point that is supported.

[0005]

According to the above feature, since the underground portion is suspended and supported by the upper structure portion supported on the ground through the pile foundation or the like, it is possible to transfer the load of the upper structure portion to the underground portion downward. It doesn't need pillars, it only has the ability to withstand its own weight and be suspended and supported by the upper structure, and it does not need foundation beams below the basement.

[0006]

Therefore, according to the present invention, since the pillar is not required in the underground portion, the number of the skeletons in the underground portion is small, and the foundation beam is not required in the lower side of the underground portion.・
It is possible to provide a building that can be realized with good workability and low cost as a whole, because the depth of excavation and the depth of embedding when installing a retaining wall are small.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a building has an above-ground portion F protruding above the ground level and an underground portion B forming a basement A in a state of being connected to the lower end thereof. The foundation of this building directly supports the above-ground portion F, and as shown in FIG. 2, a plurality of piles 1 are provided along the outer periphery of the underground portion B in the plan view, and the above-ground portion F is provided. The foundation beam 2 supporting the lower end of the pile 1 is provided so as to connect the upper ends of the piles 1 in series. The pile 1 is an H-shaped steel pile of an embedded type set up in the ground by a cement milk construction method which is a typical general construction method of the pre-boring construction method, and as shown in FIG. , Peripheral fixed part 3
A plurality of studs 4 are fixed to increase the degree of fixation with the. 5 is a root consolidation part. The foundation beam 2 is made of reinforced concrete <RC>, and the joint with the pile 1 is, as shown in FIG. 1, a pile head 1a projecting upward from the peripheral fixing portion 3 and surrounding the pile head 1a. Is embedded in the foundation beam 2 together with a plurality of loop-shaped reinforcing bars 6 which are vertically spaced apart from each other. The underground portion B is made of reinforced concrete <RC> and has a frame structure composed of an outer underground wall 7 and a pressure plate 8 forming a bottom portion.
It is suspended and supported by connecting the upper end of the outer underground wall 7 to the foundation beam 2. Reference numeral 9 denotes a basement floor slab provided above the pressure resistant plate 8 in a state of forming a water permeable layer 10 for discharging spring water, condensed water and the like between the pressure resistant plate 8 and the upper surface of the pressure resistant plate 8. A permeable layer 12 for flowing spring water, condensed water or the like into the permeable layer 10 on the pressure plate 8 inside the underground outer wall 7.
Is an inner wall of the underground room provided in a state of being formed between the inner surface of the underground outer wall 7 and More specifically, as shown in FIG. 1, the underground outer wall 7 is embedded in the concrete part 2A of the foundation beam 2 in which the upper end of the longitudinal bar 7a of the reinforcing bar is connected to the beam main bar 2a and the stirrup bar 2b. At the same time, the concrete portion 7A is made integral with the concrete portion 2A of the foundation beam 2, so that the concrete portion 7A is joined to the foundation beam 2 so as to be suspended and supported. The underground outer wall 7 and the pressure resistant plate 8 are formed by bending the lower end portion of the vertical streaks 7a of the underground outer wall 7 into the concrete portion 8A of the pressure resistant plate 8 and bending the ends of the upper and lower main bars 8a of the pressure resistant plate 8. It is joined by bending it upwards, embedding it in the concrete portion 7A of the underground outer wall 7, and making both concrete portions 7A and 8A in an integrated state. As shown in FIG. 4, a connecting plate 13 with stud bolts 13a fixed to the pile 1 is embedded in the portion to be formed. In other words, underground part B
Are auxiliary supported by the pile 1 via the connecting plate 13. 14 is abandoned concrete, 15 is a pillar of the above-ground part F, 16 is a slab on the first floor. In the above-described embodiment, the entire underground portion B is the underground portion BL that is suspended and supported, and the foundation beam 2 is the upper structural portion a that is connected to the upper portion of the underground portion BL. [Other embodiment] As the pile 1, various types such as cast-in-place concrete pile, PC pile, SC pile and the like can be used in addition to those shown in the above-mentioned embodiment. In the above-mentioned embodiment, the entire underground part B was suspended and supported, but as shown in FIG.
The lower underground portion BL including the lowermost end may be suspended and supported by the upper underground portion BU connected to the upper end thereof. In this case, the upper underground portion BU is supported on the ground as the upper structural portion a.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the structures of the accompanying drawings by the entry.

[Brief description of drawings]

[Fig. 1] Vertical section of underground structure

[Fig. 2] Cross-sectional plan view of underground structure

FIG. 3 is an enlarged cross-sectional plan view of a main part.

FIG. 4 is an enlarged cross-sectional plan view of essential parts.

FIG. 5 is a vertical sectional view showing another embodiment.

[Explanation of symbols]

 B Underground area BL Underground area a Upper structure area

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hiroyuki Hashimoto 4-1-1 Honmachi, Chuo-ku, Osaka City, Osaka Prefecture Takenaka Corporation, Osaka Main Store (72) Inventor Kiyoshi Matsuyama, Honmachi, Chuo-ku, Osaka-shi, Osaka Chome 1-13 Takenaka Corporation Osaka Main Store (72) Inventor Masaaki Kakai 2-5-14 Minamisuna, Koto-ku, Tokyo Tokyo Stock Corporation Takenaka Corporation Technical Research Institute (72) Inventor Tsuchiya Tomio Tokyo Koto 2-5-14 Minamisuna, Ward Stock company Takenaka Corporation Technical Research Institute

Claims (1)

[Claims] 1. A building having an underground portion (B), the underground portion (BL) including the lowermost end of the underground portion (B).
Is suspended and supported by an upper structure portion (a) connected to the upper part of the building, and the upper structure portion (a) is supported by the ground.