JP3143320B2 - PC foundation structure and construction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foundation structure constructed on a ground on which a building is constructed, and more particularly to a connection structure between foundations constructed by a panel construction method.

[0002]

2. Description of the Related Art Generally, when a building such as a house is constructed, a foundation is formed on the ground where the building is constructed.

FIG. 7 shows a case in which a foundation made of precast concrete (hereinafter referred to as PC) described in Japanese Patent Application Laid-Open No. Hei 5-163736 is filed.

[0004] In FIG. 7, reference numeral 100 denotes a basic body. When the foundation is constructed by joining the foundation bodies together, the joining end 1 of the foundation body 100 is used.
00A are positioned side by side. This joining end 100
A is thinner than other regions in the longitudinal direction in order to form a space for filling the filler for bonding.

[0005] A joining member 102 is arranged facing the joining end 100A, and the joining member 102 is attached to the joining end 100A of the base body 100 by bolting or the like. Thereby, the joining end portion 100
Space 1 in which filler can be filled by A and joining member 102
04 is formed. The space 104 is filled with a filler such as mortar, and after the filler is solidified, the joining member 102 is removed, and the joining ends are joined in a self-standing state.

[0006] Such a foundation main body 100 may be supported by, for example, a bottom 106 formed on the ground in a foundation construction area.

[0007]

However, the basic body 10
There is a problem that the self-sustainability tends to be impaired because the thickness of the joint end portion at 0 is thinner than other regions. That is, since the joining end portion 100A is thinner than the other regions, the position of the center of gravity line of the
It does not match the position where the thickness of 00 is bisected. For this reason, it becomes easy to fall down in the thickness direction by the moment due to the displacement. In particular, if the size of the bottom 106 formed on the ground in the foundation construction area is such that the space 104 covers the space 104, there is often no portion to stand up against the moment, so that the bottom 106 is likely to fall down.

Therefore, after the filler is filled, the joining member 102 cannot be removed until the filler solidifies, and the working time naturally increases.

[0009] In addition, in joining such a base body 100, the number of processing steps such as operations for securing independence, reinforcement arrangement work or fastening work of the joining member 102 increases, and the time required for solidification of the filler is reduced. Including it increases the time required for foundation building. This inevitably increases construction costs.

In view of the above problems in the conventional foundation structure, an object of the present invention is to provide
An object of the present invention is to provide a foundation structure capable of securing the independence of the foundation main body and reducing the number of processing steps or the consumption of filler.

[0011]

In order to achieve the above object, the PC basic structure according to claim 1 is used in a construction area of a building.
One side in the longitudinal direction next to each other on the ground
And the cross section perpendicular to the longitudinal direction is a vertical line
PC bases formed in a line-symmetrical shape with respect to
Connected between PC foundations that are connected to each other
A coupling and the member that, the, each PC foundation, said end surface
And a first recess opening in the top surface, and on the one end surface
The first base is formed along the height direction of the PC base,
A second recess communicating with the recess, and a second recess formed in the first recess;
Connected and bridged between adjacent foundations
And a connection hole for receiving a member , wherein the connection member is
Bending both ends so that they can be fitted into the connection holes
It is a substantially U-shape with a part, and one end faces of the PC base are
The bent part of the connecting member is inserted into the connecting hole with the
In this state, the first and second recesses are filled with a filler.
It is characterized by being.

[0012] The basic structure according to the second aspect is the first aspect.
In the connecting member, the bent end of the bent portion is wedge-shaped.
It is characterized by being formed in .

[0013] According to a third aspect of the present invention, there is provided a construction method, wherein the plurality of PC foundations according to the first aspect are arranged side by side with the end faces thereof being in contact with each other, and the PC foundations are connected to each other of the PC foundations. 3. The step of temporarily fixing the connecting member according to claim 1 or 2 by inserting the connecting member into the connecting hole, the inside of two opposing first concave portions opened to the top surface, and the contact end surface of each PC base. In two opposing second recesses closed by
Filling a filler such as mortar and connecting and fixing the PC bases together.

[0014]

According to the PC basic structure of the first aspect, the same center of gravity G can be obtained in the entire longitudinal direction of the basic body. Thereby, since no moment is generated, independence can be ensured. Moreover, since the filling space of the filler is formed in advance at the end of the base body having the same thickness, the consumption of the filler can be reduced because the space volume not exceeding the thickness is not required. it can.

[0015] In addition, the structure necessary for the connection of the PC foundation has been prepared in the basic body itself. Thus, it is not necessary to newly provide a structure for connection, so that the number of work steps and time required for preparation for connection can be reduced. Claim 2
According to the above described invention, the bent end of the connecting member is formed in a wedge shape.
This facilitates insertion into the connection hole.

In the construction method according to the third aspect, the self-sufficiency of the base body can be secured at the stage where the PC base body is temporarily fixed. In addition, since the filler is filled in the second recess communicating in the height direction in addition to the first recess, not only the joining in the entire height direction of the joining end can be performed, but also the joining can be performed. The required filling amount can be reduced by the amount of the recess, as compared with the conventional space.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a perspective view showing a PC base according to the present invention.

As is clear from the abbreviations, the PC foundation according to the present invention has a main body 10 made of precast concrete. The main body 10 has a cross section perpendicular to the longitudinal direction with respect to a vertical line. It is a line symmetric shape. That is, since the cross section is a line symmetrical shape with respect to the vertical line, the cross sectional shape when cut along the longitudinal direction is symmetrical with respect to the center line of the shape.

As a result, the center of gravity line of the PC base body 10 is located at the center of the base body 10 in the thickness direction, as indicated by reference numeral G in FIG.

At the longitudinal end of the PC base body 10, a first recess 12 is provided on the top surface with a width smaller than the width of the PC base body 10.

Then, at the bottom of the first recess 12,
As shown in FIG. 2, a connection hole 12A for fitting a rod member described later is formed.

That is, as shown in FIG. 3, a rod portion 14 having a bent portion 14A bent in a direction that can be fitted into the hole 12A is attached to the connecting hole 12A. ing. Thereby, it is possible to prevent the upper ends of the PC base main body 10 from separating from each other and to temporarily fix them.
Separation in this case means that the walls of the first recesses 12 are pressed in directions away from each other due to the pressure when the filler is filled.

On the other hand, a second recess 16 extending in the height direction of the base body 10 is formed in the first recess 12 formed on the top surface at the end of the base body 10. The second recess 16 is formed on the top surface of the base body 10 by a first recess.
, And the end thereof communicates with the first recess 12.

Since the present embodiment has the above configuration,
The case where the PC base bodies 10 are joined to each other on the bottom board 106 shown in FIG. 7 will be described as follows.

First, the base bodies 10 are arranged side by side with their joint ends adjacent to each other.

Then, in this state, the rod member 14 is inserted into the connection hole 12A in the first recess 12 of the base body 10, and the ends of the base body 10 are abutted to temporarily fix.

In this state, the first and second concave portions 1
The two and 16 communicate with each other to form a space for filling.

The PC basic body 10 in this case is shown in FIG.
As shown by reference numeral G, the center of gravity line is the same throughout the entire area in the extension direction, and therefore no upward or downward moment is generated in FIG.

In this state, the filler is filled. As a result, adjacent PC base bodies 10 are connected to each other.

The above-mentioned rod member 14 is not only constituted by a round shaft including its bent portion, but also, for example, as shown in FIG.
May be easily inserted into the connection hole 12A formed in the concave portion 12.

On the other hand, the filler is not only filled in the first concave portion 12 located at the upper end of the PC basic main body 10 but also spreads inside the second concave portion 16. A joint in the direction is formed. Thereby, the joining strength in the height direction can be secured.

FIG. 6 shows the first concave portion 12 and the second concave portion 12.
FIG. 4 is a view showing the relationship between the first concave portion 12 and the concave portion 16 in detail. The filler material flowing into the first concave portion 12 flows in a state overflowing toward the second concave portion 16 and is formed on the other of the top surface of the base body 10. The inside of the first recess 12 is also filled.

According to the above-described embodiment, the first recess 12 is smaller than the width of the PC base main body 10. Connection strength can be ensured.

[0035]

As described above, as described above, P
According to the C foundation structure , the same center of gravity G can be obtained in the entire longitudinal direction of the foundation body. Thereby, since no moment is generated, independence can be ensured. Moreover, since the filling space of the filler is formed in advance at the end of the base body having the same thickness, the consumption of the filler can be reduced because the space volume not exceeding the thickness is not required. it can. In addition, since the shape of the base body can be symmetrical with respect to the line, the fabrication of the molding die is simplified. This reduces the costs required to mold the base body.

In the basic structure according to the second aspect, the connecting member
The wedge-shaped bent tip allows easy insertion into the connection hole.
Can be easier.

According to the construction method of the third aspect, the independence of the base main body can be secured at the stage where the PC base main body is temporarily fixed. In addition, since the filler is filled in the second recess communicating in the height direction in addition to the first recess, not only the joining in the entire height direction of the joining end can be performed, but also the joining can be performed. The required filling amount can be reduced by the amount of the recess, as compared with the conventional space.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a main part of a PC foundation according to the present invention.

FIG. 2 is a plan view of the PC base shown in FIG.

FIG. 3 is a schematic diagram for explaining an example of a basic structure using a PC base according to the present invention.

FIG. 4 is a plan view of the basic structure shown in FIG.

FIG. 5 is a front view showing a modified example of a member used for the PC foundation shown in FIG.

FIG. 6 is a perspective view showing details of a main part of the PC base shown in FIG. 1;

FIG. 7 is an explanatory diagram showing a configuration example of a conventional general base unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Base main body 12 1st recessed part 12A Connection hole 14 Rod member which forms a connection member 14A Bent part 16 2nd recessed part 106 Bottom plate

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E02D 27/01 101

Claims (3)

(57) [Claims] 1. A longitudinal direction on the ground in a construction area of a building
Are arranged adjacent to each other at one end face thereof, and
The cross section perpendicular to the longitudinal direction is symmetrical with respect to the vertical line
Connected PC bases by being bridged between formed PC bases and adjacent PC bases
A connecting member , wherein each of the PC bases is formed along the height direction of the PC base on the one end face and a first concave portion opened on the top face.
A second concave portion communicating with the first concave portion, and another adjacent base formed in the first concave portion.
Anda connecting hole for receiving a connecting member bridged between the connecting member toward capable fitting both end portions in the connecting hole
The PC hole is formed in a substantially U-shape having a bent portion, and one end faces of the PC base are adjacent to each other.
With the bent portion of the connecting member inserted in
2, characterized in that the recess is filled with a filler.
PC basic structure. 2. The connecting member according to claim 1 , wherein a bent front end of the bent portion is formed in a wedge shape.
PC basic structure characterized by being done. 3. A process of juxtaposed a plurality of PC foundation according to claim 1 is brought into contact with the end faces, wherein the PC foundation together, claim 1 wherein each connecting hole of each PC Basic Or a step of temporarily fixing the connecting member by inserting the connecting member according to or 2 , inside two first concave portions which are open to the top surface and face each other;
Filling a filler such as mortar into the two opposing second concave portions closed by the contact end surfaces of the PC bases, and connecting and fixing the PC bases to each other. Construction method of the basic structure to be done.