JPH0647814B2 - Artificial ground structure in soft ground - Google Patents

Description

TECHNICAL FIELD The present invention relates to an artificial ground structure in soft ground.

[Prior Art] When constructing a road, a building, or the like on soft ground, a method of driving a large number of piles into the ground to support the building or the like is generally adopted. According to this construction method, its bearing capacity is large and it is excellent as a foundation for high-rise buildings, for example,
The construction work is troublesome, the construction cost is high, and it is not suitable for flat support.

Therefore, recently, a construction method of an artificial ground has been developed which is easy to construct and particularly excellent in plane support. This method is P. It is called the S construction method, and has a construction method in which styrofoam is placed side by side on soft ground and a slab is formed on the upper surface of the styrofoam.

[Problems to be Solved by the Invention] P. According to the S method, although the flat surface support is certainly excellent, since the slab formed on the expanded polystyrene is flat, it is easily cracked when it is impacted, and thus it supports a wide flat surface, such as a parking lot or an airplane. It is not suitable for supporting the flat surface that forms the runway or the artificial ground that supports the flat surface that supports heavy objects on the upper surface, and there is a problem that its use range is narrow and limited.

The present invention provides an artificial ground structure for soft ground for the purpose of solving the above problems.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a foamed organic compound body having an appropriate height and an appropriate size in parallel on a planned site for forming artificial ground of soft ground, Reinforcing bars for ribs are placed between the side-by-side foamed organic compound bodies, slab rebars are placed on the foamed organic compound bodies, and concrete is poured from above to form slabs on the foamed organic compound bodies. Then, ribs of the slab were formed between the foamed organic compound bodies.

[Operation] According to the present invention, the slab on the foamed organic compound is planarly supported on the soft ground by the buoyancy generated by the difference in specific gravity between the soft ground and the foamed organic compound, and its sinking is prevented. Since the rib is formed on the lower surface, the strength of the slab is improved.

[Embodiment] Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings.

In the drawings, reference numeral 1 is a soft ground, and 2 is a foamed organic compound body composed of styrene foam and the like arranged in parallel on the planned site for forming artificial ground of the soft ground. The height (thickness) and the size of the foamed organic compound body 2 are appropriately determined, and the weight of the slab formed on the foamed organic compound body 2 and the use of the artificial ground, which will be described later, For example, it is required in consideration of the difference in specific gravity from soft ground depending on the foundation of roads, buildings, etc. Further, in the juxtaposition of the foamed organic compound bodies 2, adjacent foamed organic compound bodies 2 are juxtaposed at appropriate intervals. This interval is a space for forming a rib, which will be described later, and the side surface of the foamed organic compound body 2 serves as a temporary frame for the rib. Reference numeral 3 denotes a reinforcing bar for ribs arranged in a space between the foamed organic compound bodies 2 arranged side by side, and an upper portion of the reinforcing bar for ribs 3 projects upward from an upper surface of the foamed organic compound body 2. Reference numeral 4 denotes a slab reinforcing bar arranged on the expanded organic compound body 2 arranged side by side, and the slab reinforcing bar 4 and the upper part of the rib reinforcing bar 3 are bound together. Reference numeral 5 is a slab formed on the foamed organic compound body 2 by concrete cast on the foamed organic compound body 2, and 6 is a rib of the slab 5 formed between the foamed organic compound bodies 2.

Next, a method of constructing the artificial ground of the present invention having the above configuration will be described.

First, the artificial ground formation planned site of the soft ground 1 is leveled, and crushed stone, crushed stone, etc. are laid on this leveled ground, and discarded concrete is struck, and then the foamed organic compound body 2 is juxtaposed on the surface of the discarded concrete 7. And sew out the placement position of the reinforcing bar 3 for ribs,
Next, after the rib reinforcing bars 3 are assembled and arranged at the positions where the rib reinforcing bars 3 are arranged, the foamed organic compound bodies 2 are sequentially arranged side by side so as to sandwich the rib reinforcing bars 3. Next, the reinforcing bar 4 for slab is assembled and arranged on the foamed organic compound body 2, the reinforcing bar 4 for slab and the reinforcing bar 3 for rib are bound, and then concrete is poured from above the foamed organic compound body 2 to foam. A slab 5 is formed on the organic compound body 2 and the foamed organic compound body 2 is formed.
The ribs 6 of the slab 5 are formed therebetween.

Thus, the artificial ground including the foamed organic compound body 2 and the slab 5 having the ribs 6 supported by the foamed organic compound body 2 is formed on the soft ground 1.

[Effects of the Invention] As described above, the artificial ground structure in the soft ground according to the present invention has an appropriate size of the foamed organic compound body arranged in parallel in the artificial ground formation planned site of the soft ground, A reinforcing bar for ribs is arranged between the foamed organic compound bodies arranged in parallel, and a reinforcing bar for slab is arranged on the foamed organic compound body, and concrete is poured from the reinforcing bar for the slab on the foamed organic compound body. Since the slab ribs are formed between the foamed organic compound body, the slab on the foamed organic compound body is planarized on the soft ground due to the buoyancy generated by the difference in specific gravity between the soft ground and the foamed organic compound body. Since the slab is supported and prevented from sinking and the ribs are formed on the bottom surface of the slab, the strength of the slab is improved, so that the slab is built on soft ground, such as roads, low- and middle-rise buildings, parking lots and slides. Dirt floor It has an excellent effect as a structure of artificial ground such as, and further, since the structure is simple, the construction work is easy and the construction cost is low.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a plan view showing a state before arranging slab reinforcing bars. 1 ... Soft ground, 2 ... Foamed organic compound body 3 ... Rib reinforcement, 4 ... Slab reinforcement 5 ... Slab, 6 ... Rib

Claims (1)

[Claims] 1. A foamed organic compound body having an appropriate height and a suitable size is arranged in parallel on a site where artificial ground is to be formed on soft ground, and a reinforcing bar for ribs is arranged between the arranged foamed organic compound bodies. , Slab rebar is placed on the foamed organic compound body, concrete is poured from there to form slabs on the foamed organic compound body, and slab ribs are formed between the foamed organic compound bodies. Artificial ground structure in soft ground.