JPS61200221A - Large foundation structure - Google Patents

Abstract

PURPOSE:To enable support of a massive load produced by a building, by a method wherein lattice-shaped partition walls are formed to the interior of the peripheral wall of an underground building serving as the underground foundation of a heavy building, and a reinforcing column is previously buried in the intersection part of the partition walls. CONSTITUTION:The underground foundation structure of a heavy building 20, such as elevated bridges, has a peripheral wall 10 having an oblong closed cross section. A number of partition walls 12, which have both ends securely attached to a peripheral wall in a manner to be extended right angles with the peripheral wall 10 and partition the interior of the peripheral wall in the shape of a lattice, are formed to the interior of the peripheral wall 10. A reinforcing column 14, formed with a steel pile, a concrete pile, a steel pipe, etc., is previously buried in the intersection part of the partition walls 12. This reinforces the partition wall, and enables support of the massive load produced by a building.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention is applicable to underground structures such as viaducts, high-rise buildings, and super high-rise buildings. , relating to structures used as a foundation.

(Prior art and problems) As is well known, as a construction method for large structures such as IF & cross-linking, a structure is constructed in advance on the ground,
There is a so-called caisson construction company that sinks this.

This method has the advantage of making the foundation in the ground, allowing various shapes to be selected depending on the superstructure. The problem was that it was extremely bad.

Therefore, the applicants of this case developed a foundation construction method to solve these problems of the caisson construction method, and
No. 9973 and Japanese Patent Publication No. 59-49974.

The basic content of the construction method disclosed in these construction methods is to form a wall with a closed planar shape of the foundation structure using the underground continuous wall construction method, but it has the following problems. There is.

In other words, the foundation structures constructed using the construction methods shown in these publications do not pose any problems for bridge piers with relatively small injuries, but for example, when the total Φ suspension is several thousand tons or tens of thousands of liters. When applied to large pieces of construction such as bridges, etc., there was a problem in that the yield strength required for one minute to support them was 1:1.

In addition, in large buildings of this type, the foundation is naturally extremely deep, reaching several tens of meters, for example, so the foundation is subject to strong earth water pressure, which can be adequately counteracted. It becomes hard to do.

This invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide a booth for a building structure with people in it, and a foundation structure that is resistant to deep soil water pressure. It is about providing things.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a peripheral wall with an open cross section that is installed underground as a foundation structure and forms the outer periphery of the foundation structure, and an inner portion surrounded by this peripheral wall. It is characterized by consisting of a large number of partition walls whose both ends are fixed to the surrounding wall and whose interior is partitioned in a lattice pattern, and reinforcing columns buried in advance at the parts where the partition walls intersect with each other. Tozuru.

(Function) Closed IfI'1lli: circumference 5 and numerous partitions arranged in a grid; 1! In addition to supporting the superstructure together, reinforcements buried appropriately at the intersections of the partition walls work together to support each other, and the area of contact between the foundation and the ground becomes extremely large. It also provides the frictional force necessary to support the structure.

In addition, the lattice-like ('-9) wall formed by fixing both ends inside the solid wall has a so-called honeycomb shape, and functions as a reaction force of the earth water pressure surrounding the circumference W, and has a large Even if the foundation is installed at depth, it can be sufficiently countered.

(Example) Hereinafter, a preferred embodiment of this invention IJ1! The iVA will be described in detail with reference to the accompanying drawings.

Figure 1 a3 and Figure 2 are large-sized foundation M4 according to this invention.
An example of three mountain items is shown.

The foundation structure, which is not shown in the same figure, has a horizontal cross section formed in a substantially rectangular shape, and is surrounded by a peripheral wall 10 having a long moon-shaped closed cross section forming the outer periphery of the V-core structure, and a peripheral wall 10'c. A large number of partition walls 12.12 are located in the inner part, and are fixed so that both ends intersect 1l-1 with the peripheral wall 10, forming a lattice-like partition inside. F:! number of reinforcing pillars 14, 14 and 'C' are roughly constructed in advance at appropriate locations where they intersect with phase U.

The structure mentioned above is constructed by drilling a narrow trench from the ground, inserting a reinforcement cage, and then pouring concrete.
N-1'-,? h to form a panel 10a of a predetermined length,
The outer walls are successively connected laterally or joined to the instep to form the peripheral wall 1.
0, then reinforcing columns 14 and 14 are cast at predetermined locations, and then, while excavating the inside of the peripheral wall 10, concretes 1~ are cast, and partitions 14 and 14 are sequentially installed in the direction tJU from above to below.
2. Build 12 using the upside down construction method.

The lower end of the peripheral wall 10 is formed, for example, about 100 meters underground so as to reach the hard ground in the ground.

On the other hand, the cut W12.12 and the reinforcement +114, 14 are, for example, in this embodiment (about 1/2 of the circumferential wall 10 at a depth of jα
Until summer, the 10th floor and the surrounding wall 10 are connected together.
Form the base plate 1G and the number of terms 18, lci lkl
8, L IJ 'tl inclusion 20 Ka4'4'A
'Q h le.

Here, as a preferred embodiment, 1. The edge of each partition jV12.12 contacts and connects the horizontal connecting portion 10b between each panel 108 of the circumferential wall 10 from the inside, and the connecting portion between the partition wall 12 and the peripheral wall 10, In addition, thickened punch portions are formed at the parts where the partition walls 12 and 12 intersect with each other, and if configured in this way, the weak points in the strength of the peripheral wall 10 can be effectively eliminated. In addition, a thickened portion is formed on the outer periphery of each reinforcing column 14, 14, and better integrity between the reinforcing column 14 and the partition wall 12 can be obtained.

If, the reinforcement pillars 14 and 14 are, for example, steel piles.

] Appropriately selected from concrete piles, steel pipes, H steel, etc.

Further, the space 22 having a rectangular cross section separated by the partition walls 12, 12 may be left as is without backfilling, or may be backfilled with excavated sand.

Now, in the large-scale foundation structure consisting of the above configuration,
A peripheral wall 10 with a closed cross section, a large number of partitions 12.12 provided perpendicular to the peripheral wall 10, and reinforcing columns 14.14 buried in advance in the parts where the partition walls 12 intersect with each other.
The bottom plate 16 and the top plate 18 cooperate to support the huge load of the upper structure, and the partition wall 12.12 is installed inside the peripheral wall 10, etc., and is fixed at both ends. ,
The honeycomb shape provides great rigidity, and the partition wall 12 also serves as a reaction force for the earth water pressure surrounding the peripheral wall 10, so it can sufficiently resist even if the foundation is constructed at a great depth.

In addition, in the above embodiment, the partition wall 12.12 is formed so as to be perpendicular to the peripheral wall 10, but the present invention is not limited to this, and the partition wall 12.12 is formed so as to be oblique to the peripheral wall 110, and The partition walls 12, 12 may be arranged in a lattice shape so that they are perpendicular to each other.

Furthermore, a reinforcing wall 24 obliquely crossing the partition wall 12 may be provided in the space 22 separated by the partition wall 12, 12 as shown by imaginary lines in FIG.

(Effects of the Invention) As described above in detail in the embodiments, according to the large-scale foundation structure according to the present invention, the front part of a huge building can be supported by 11
If it is possible to withstand the surrounding water L at great depths,
Is it arrogant that the foundation of the large door 1 pull is horizontally built-C3 with popularity 1 below? ) fruit is obtained.

[Brief explanation of the drawing]

FIG. 1 J3 and FIG. 2 show an embodiment of the present invention, FIG. 1 is a partially cutaway sectional view of the foil, and FIG. 2 is a plan view of FIG. 1. 10... Surrounding box 12... Partition wall] 4... Reinforcement column 16... Bottom plate 18... Top plate 20... ...
Notching 22... Spatial section patent applicant Obayashi Composition Co., Ltd.
Patent attorney
-Irokanosuke Mine 1 diagram

Claims (2)

[Claims] (1) In the foundation structure of a heavy building such as an elevated high-rise building that is installed underground, there is a peripheral wall with a closed section that forms the outer periphery of the foundation structure, and an inner part surrounded by the peripheral wall, with both ends A large-scale foundation structure characterized by comprising a large number of partition walls that are fixed to the peripheral wall and partition the inside in a lattice pattern, and reinforcing columns that are buried in advance in the parts where the partition walls intersect with each other. . (2) Claim 1, characterized in that an edge of the partition wall is fixed to a lateral connecting portion of the wall body.
Large basic structures mentioned in Section 1.