JP2005248596A - Foundation of building and construction method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foundation of a building, which sufficiently secures strength against a horizontal force or a vertical force, so as to be also suited to a foundation with a concentrated load imposed thereon, such as a foundation of a gravestone, and a foundation of a general building such as a house, and which can be inexpensively and simply constructed in a short period of time, and to provide a construction method for the foundation of the building. <P>SOLUTION: A plurality of foundation piles 5 are driven at intervals into ground 3 whereon rubble stones 2 are laid; through-holes 6 horizontally crossing one another are formed in the upper part of each foundation pile 5; a main reinforcement 7 is inserted into the through-hole 6, so that the respective foundation piles 5 can be connected together by means of the main reinforcement 7; a plurality of auxiliary reinforcements 8, which are arranged at intervals in the main reinforcement 7, are connected together; and concrete 9 is placed and hardened so that the foundation pile 5, the main reinforcement 7 and the auxiliary reinforcement 8 can be integrated together on the rubble stones 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a foundation for a simple building that has excellent seismic performance and is resistant to ground fluctuations, and a construction method therefor.

  The solid foundation known as one of the foundation structures is a foundation structure that reinforces the insufficient ground strength by placing concrete stones and embedding reinforcing bars after solidifying the cracked stones spread on the ground. . Such a solid foundation is widely known as a foundation for ordinary houses. As another foundation structure, a plurality of foundation piles are placed on the ground, and a foundation structure is constructed in which these foundation piles are connected to each other.

As a conventional example using such a foundation pile, Patent Document 1 will be described. As shown in FIG. 6, the structure of the present invention is a head of an RC pile 21 that is a pile and a foundation member of an upper structure. The RC foundation slab 22 is joined via a reinforcing bar 23 made of a low yield point material.
Japanese Patent Laid-Open No. 2002-97650 (first and second pages, FIG. 1)

  However, in the above-mentioned foundation structure, since the reinforcing bar 23 provided in the RC pile 21 has a structure embedded in the RC foundation slab 22 in a vertically extending state, with respect to the horizontal force or the vertical force at the time of an earthquake, There is a drawback that the rebar 23 on the RC pile 21 side is easily removed from the RC foundation slab 22.

  By the way, in order to build the foundation of a building where concentrated load acts like a tombstone, sufficient ground strength is required, but there are many cases where a tombstone is built without sufficiently building the ground, There is a situation in which the tombstone tilts due to ground changes caused by earthquakes and the weight of the tombstone itself.

  Tombstones are often constructed on relatively soft soil, and the ground area sectioned in the graveyard is generally small, so that the cost is as low as possible. The current situation is to do.

  Therefore, the foundation of the cemetery is inexpensive, can be constructed in a short period of time, and even if the ground is weak, it must be resistant to ground fluctuations due to earthquakes, etc., and can have a sufficient horizontal or vertical force. It becomes.

  The present invention has been made in view of the above circumstances, and is suitable for a horizontal force or a vertical force so as to be suitable for a foundation that is subjected to a concentrated load such as a tombstone foundation or a foundation for a general building such as a house. An object of the present invention is to provide a foundation for a building having sufficient proof strength, which can be constructed inexpensively and easily in a short period of time, and a construction method therefor.

  In order to achieve the above-mentioned object, claim 1 of the present invention provides a plurality of foundation piles placed at intervals on the ground laid with crushed stone, and penetrating horizontally across the top of each foundation pile. A hole is formed, and by inserting the main reinforcement into the through-hole, each foundation pile is connected with the main reinforcement, and a plurality of auxiliary reinforcements arranged at intervals to the main reinforcement are connected to each other on the cracked stone. Then, concrete is cast and hardened so that the foundation pile, the main reinforcement, and the auxiliary reinforcement are integrated.

  According to a second aspect of the present invention, in the first aspect, the plurality of foundation piles, the main bars and the auxiliary bars are constructed inside a frame plate assembled on the ground, and concrete is struck inside the frame plate. The frame plate is removed after being set and cured.

  Further, according to claim 3 of the present invention, in the case of building a foundation having a quadrangular planar shape in claim 1 or 2, a frame plate that defines a target shape is provided on the ground, and the foundation piles are provided on all sides of the ground in the plate frame. By inserting the main bars into the horizontal crossing through holes formed in the upper part of the foundation piles, the foundation bars are connected by the main bars and the foundation piles are arranged at predetermined intervals. The supplementary reinforcing bars are arranged and connected to the main reinforcing bars, and the main reinforcing bars, the auxiliary reinforcing bars, and the foundation pile are casted with concrete and hardened to be integrated.

  Furthermore, claim 4 of the present invention provides a frame plate that defines a target shape around the ground, lays a quarry stone on the ground in the frame plate, and provides foundation piles at a plurality of locations on the ground in the frame plate. After driving in, the main bar is inserted into a horizontally intersecting through hole formed in the upper part of the foundation pile, and a plurality of auxiliary bars arranged at intervals are connected to each main bar, and the frame By placing concrete in the plate, the foundation pile, the main reinforcement and the auxiliary reinforcement are integrated on the upper part of the ground cracking stone of the ground, and the frame plate is removed after the concrete is hardened. It is characterized by.

  The present invention is in a state where each foundation pile is connected by a main reinforcement inserted through a through hole in the upper part of the foundation pile driven into the ground, and an auxiliary reinforcement is coupled to the main reinforcement with a space therebetween. The combination of the foundation pile, the main reinforcement, and the auxiliary reinforcement is integrated in a state of being solidified with concrete on the split stones laid on the ground.

  Therefore, each foundation pile is fixed to the ground, and at the same time, the mutual foundation piles are connected by the reinforcing bars of the main and auxiliary bars, and these connection states are integrally fixed by concrete, Even when a horizontal force, concentrated load, or land subsidence occurs due to an earthquake or the weight of the building, the foundation piles pull each other to supplement the strength, so that the strength against the horizontal force or vertical force is sufficient. It can be secured.

  Further, the construction method according to the present invention includes providing a frame plate around the ground, laying a quarry stone on the ground in the frame plate, driving a foundation pile into a plurality of locations on the ground in the frame plate, Because it can be easily constructed by inserting the main bars through the through holes of the foundation pile and connecting multiple auxiliary bars to each main bar and placing concrete in the frame plate in sequence, It becomes possible to construct at low cost.

  In addition, since the concrete is placed around the foundation using a frame plate, the concrete placement height can be determined based on the height of the frame plate, and the height of the frame plate can be determined. It becomes possible to easily perform the leveling work of the concrete surface as a reference.

  Embodiments of the present invention will be described below with reference to the drawings.

  As shown in FIG. 1, the foundation 1 of the building according to the present invention has a plurality of foundation piles 5, 5... Placed on the ground 3 on which the split stones 2 are laid, and an upper portion of each foundation pile 5. A through hole 6 that intersects horizontally is formed, and by inserting the main reinforcement 7 into the through hole 6, each foundation pile 5 is connected by the main reinforcement 7, and a plurality of them are arranged at intervals in the main reinforcement 7. .., And the concrete 9 is placed and hardened so that the foundation pile 5, the main reinforcement 7 and the auxiliary reinforcement 8 are integrated on the split stone 2. FIG. 1 shows a situation during construction, and the concrete 9 is placed at a height along the upper surface of the frame plate 9.

  In such a configuration, the present embodiment is applied as a foundation 1 having a square planar shape so as to be optimal as a foundation for a tombstone or the like. In this case, the cracking stone 2 is provided on the ground 3 with a predetermined area, and the frame plate 4 for defining the target shape is provided. That is, as shown in FIG. 1, a long frame plate 4 is combined to form a frame shape having a square planar shape, and foundation piles 5, 5,... Set up.

  Each foundation pile 5 is formed with through holes 6, 6 that intersect horizontally in the upper part thereof. Such a crossing situation of the through-holes 6 and 6 depends on the arrangement situation of the reinforcing bars, but when the main reinforcement 7 and the auxiliary reinforcement 8 described later are orthogonal to each other, the through-holes 6 and 6 intersect in a cross shape. It is good to form. In view of preventing corrosion in the soil, the foundation pile 5 is preferably made of reinforced concrete reinforced with reinforcing bars disposed therein, or made of steel concrete with steel frames embedded therein.

  As shown in FIG. 5, the main bars 7 are connected by the main bars 7 by inserting the main bars 7 into the through holes 6 provided in the upper part of the foundation pile 5. Further, as shown in FIG. 1, a plurality of auxiliary reinforcing bars 8, 8. In addition, the main reinforcement 7 and the auxiliary reinforcement 8 do not distinguish the kind of reinforcement used for it, the reinforcement inserted through the through-hole 6 of the foundation pile 5 is called the reinforcement 7, and between the other foundation piles 5. Reinforcing bars connected to the main bars 7 are called auxiliary bars 8, both of which have the same diameter, and in order to improve the adhesion of the concrete 9, it is preferable to use deformed reinforcing bars having ribs. The main muscle 7 and the auxiliary muscle 8 may be connected by using a well-known number wire 12.

  Then, in the above configuration, concrete 9 is placed in the frame plate 4. At this time, the concrete 9 is leveled with respect to the height of the plate frame 4 to facilitate the work, and the height of the plate frame becomes the height of the foundation after completion.

  By placing the concrete 9 as described above, the foundation pile 5, the main reinforcement 7, and the auxiliary reinforcement 8 are integrated on the cracked stone 2 laid on the ground 3 by the hardened concrete 9.

  The construction method according to the present invention will be described. As shown in FIG. 2 (a), the ground 3 has a slightly larger area so that a plate frame 4 (see FIG. 2 (b)) can be provided around the target shape. Excavate. Next, as shown in FIG. 2 (b), the split stones 2 are laid on the ground 3 in the frame plate 4, and the foundation piles are placed at a plurality of locations on the ground 3 in the frame plate 4 as shown in FIG. 2 (c). Type in 5. The amount of driving must be such that the through-hole 6 of the foundation pile 5 is positioned above the cracked stone 2 laid on the ground 3.

  Next, as shown in FIG. 3 (a), the main bars 7 and 7 are inserted into the through holes 6 and 6 formed in the upper part of the foundation pile 5 and intersecting horizontally, and the main bars 7 are spaced from each other. A plurality of auxiliary muscles 8 arranged together are coupled.

  Next, as shown in FIG. 3 (b), by placing concrete 9 in the frame plate 4, the foundation pile 5, the main reinforcement 7, and the auxiliary reinforcement 8 are integrated on the upper part of the cracked stone 2 of the ground 3. .

  Furthermore, as shown in FIG.3 (c), the foundation made from a reinforced concrete which has a reinforcing bar (the main reinforcement 7, the auxiliary reinforcement 8) inside can be constructed | assembled by removing the frame board 4 after hardening of the concrete 9. As shown in FIG.

  FIG. 4 (a) shows another embodiment of the present invention in which a tombstone foundation column 10 is erected at the center of the foundation 1 of the above embodiment. In such a case, by providing the auxiliary muscles 8 in a state where they are avoided from the foundation struts 10, the others can be constructed in the same manner as described above.

  Further, as another embodiment of the present invention, what is shown in FIG. 4 (b) is not a foundation 1 having a simple rectangular plane, but a shape combining two squares, A foundation support 10 is provided. Thus, by devising the placement position of the foundation pile 5, it can also be used for a planar shape having another polygon such as a hexagonal shape, a planar shape having an arc shape, or a circular planar shape. can do. In addition, in the case of a foundation having an arc shape or a circular planar shape, the frame plate needs to be an arc shape or a circle.

  The present invention can be used for a foundation of a simple building that has excellent seismic performance and is resistant to ground fluctuations, and a construction method thereof. In particular, a foundation such as a tombstone foundation on which a concentrated load is applied, and a house, etc. It is a foundation in which horizontal force or vertical force is sufficiently secured so as to be suitable for general building foundations, and can be used to construct inexpensively and easily in a short period of time.

It is a perspective view of the foundation of the building by this invention. (a)-(c) is sectional drawing which shows the construction process of the foundation of the building by this invention. (a)-(c) is sectional drawing which shows the construction process of the foundation of the building by this invention. (a) And (b) is a schematic plan view which shows the other Example by this invention. It is the elements on larger scale which show the combined state of the foundation pile and the reinforcing bar of the foundation of the building by this invention. It is a figure regarding a prior art and is the elements on larger scale of patent document 1. FIG.

Explanation of symbols

1 ... foundation 2 ... cracked stone 3 ... ground 4 ... board frame 5 ... foundation pile 6 ... through hole 7 ... main reinforcement 8 ... auxiliary reinforcement 9 ... concrete 10 ... foundation post 12 ... number wire

Claims (4)

By placing a plurality of foundation piles at intervals on the ground laid with cracked stone, through holes that intersect horizontally are formed at the top of each foundation pile, and by inserting the main bar into the through holes, The base piles are connected by main bars, and a plurality of auxiliary bars arranged at intervals are connected to the main bars so that the foundation piles, main bars and auxiliary bars are integrated on the split stone. The foundation of the building, which is characterized by casting and hardening. The plurality of foundation piles, the main bars and the auxiliary bars are built inside a frame plate assembled on the ground, and the frame plate is removed after the concrete is placed and hardened inside the frame plate. A building foundation according to claim 1. When building a foundation with a square planar shape, provide a frame plate that defines the target shape on the ground, place foundation piles on all sides of the ground in the plate frame, and form a horizontal shape formed above the foundation pile. By inserting the main bars through the intersecting through-holes, each foundation pile is connected with the main bars, and between the respective foundation piles, auxiliary bars arranged at a predetermined interval are arranged and connected to the main bars, and the main bars and the The foundation of the building according to claim 1 or 2, wherein the auxiliary reinforcement and the foundation pile are integrated by placing them with concrete and hardening them. Install a frame plate that defines the target shape around the ground, lay a quarry stone on the ground in the frame plate, drive the foundation pile into multiple locations on the ground in the frame plate, and then place it on the top of the foundation pile By inserting the main bar into the formed through hole that intersects horizontally, and placing concrete in the frame plate in a state in which a plurality of auxiliary bars arranged at intervals are connected to each main bar In addition, the foundation pile, the main reinforcement, and the auxiliary reinforcement are integrated on the upper part of the cracked stone of the ground, and the frame plate is removed after the concrete is hardened. Method.

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