JP2507210B2 - Connection structure of foundation beams for construction - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a connecting structure of building foundation beams which are laid between independent foundations installed at predetermined locations of a building ground to form a foundation of a building.

[0002]

2. Description of the Related Art In order to construct a building in a stable state, it is first necessary to construct a foundation on the ground in a stable and appropriate manner. In constructing this foundation, so-called independent foundation form and cloth foundation form are known.

In the form of the independent foundation, a bottom board is installed at a predetermined point in the construction area of the building, for example, a corner or a midpoint between the corners to construct the independent foundation, and The foundation beams are installed across the independent foundation. That is, in the independent foundation type, unlike the cloth foundation, it is not necessary to excavate the entire foundation portion to a certain depth, and the portion of the independent foundation is excavated to a predetermined depth, and the other portions can be excavated shallowly. Therefore, the freezing of the ground occurs,
It is often used in cold regions where it is difficult to excavate the ground.

FIG. 7 shows an example of the foundation beam as described above.

In the figure, the foundation beam 10 is formed in a rectangular parallelepiped shape having a predetermined thickness w and is made of concrete. A trapezoidal notch 12 having a gradually narrowed width is provided on the side installed on the ground, that is, the bottom 11. Further, since both ends thereof are joined to other foundation beams, the wall thickness is made thicker and the recessed portions 16 are formed on the end faces to form joining portions.

When a foundation of a building is constructed by using the foundation beam 10 as described above, an independent foundation is installed at each point, and then legs 14 which are both end portions on the bottom side of the foundation beam 10 are mounted on the independent foundation. I set up and try to get over. These both ends are connected and fixed to the ends of other foundation beams. There are various types of coupling of the foundation beams 10 such as a case where they are performed in directions orthogonal to each other and a case where they are coupled in a straight line.

FIGS. 6A and 6B show a conventional foundation beam 1.
It is explanatory drawing which shows the coupling | bonding state of 0, The figure (A) is the form which the foundation beams 10-1 and 10-2 installed in a straight line, and also the foundation beam 10-3 are orthogonally connected to them. FIG. 2B shows an example in which two foundation beams 10-4 and 10-5 are connected so as to be orthogonal to each other.

As shown in the figure, each base beam 10 has a reinforcing bar 18 embedded therein for increasing the strength. Then, in the case of FIG. 3A, the recesses 16 of the respective foundation beams 10 are installed so as to face each other, and the reinforcing bars 20 for reinforcing the connecting parts are installed in the spaces formed by these recesses 16. In addition, concrete is poured into this space to bond and fix it.

In FIG. 1B, a base beam having no recess is used as one of the base beams 10-4 and the other base beam 1 is used.
The 0-5 concave portion is installed at a right angle so as to face the side surface of the foundation beam 10-4, and the reinforcing bar protruding from the foundation beam 10-4 side is extended into the space of the concave portion 16 and concrete is provided in that portion. The two are fixed by connecting them.

[0010]

The above-mentioned conventional foundation beam 10
In the joint structure of No. 1, first, when the foundation beam 10 is assembled, concrete is placed in these concave portions 16 and each foundation beam is temporarily fixed until the concrete is solidified until the foundation beams are stably installed. Jig is required. That is, since the foundation beams 10 are not connected to each other until the cast concrete is solidified, there is a risk that the foundation beams 10 may fall or be displaced due to impact. Therefore, in addition to the foundation beam 10, a relatively large-scale temporary fixing jig is required.

In addition, in the above-described conventional connection structure of the foundation beams 10, it is necessary to provide the recesses 16 in each foundation beam. Therefore, both end portions of each foundation beam have the recesses 16 in a sufficiently wide space so that the recesses 16 are thickened. The shape is made thicker. Therefore, there is a problem that a large space is required when the foundation beam 10 is transported to a construction site, and the portion where the recess 16 is formed is easily chipped. Further, the shape of the end of the foundation beam 10 in which the recess 16 is formed needs to be variously changed depending on the installation location.
There were many types of. Further, since there is a concave portion 16 at the end and the cross-section is U-shaped, it is difficult to form the foundation beam 10 by concrete casting, particularly lateral casting.

The present invention has been made to solve the above-mentioned problems, and its purpose is to eliminate the need for installing a jig for temporary fixing when the foundation beams are connected to each other, and To further simplify the structure of the construction, to reduce the transportation space and to facilitate the production, and to provide a joint structure of foundation beams for construction that can effectively reinforce the joint portion after placing concrete. It is in.

[0013]

In order to achieve the above-mentioned object, a building foundation beam according to the present invention comprises a connecting portion of a foundation beam erected between independent foundations installed at predetermined locations in a building construction area. A notch formed by notching a side surface of the building on the inner side within a predetermined range and both ends are abutted across the notches of the two foundation beams to be joined, and an intermediate portion between the contact portions is the abutment. A joining member configured to float in a direction away from the cutout portion with respect to the contact surface, fixing means for fixing the abutted portion of the joining member to each of the foundation beams, and an intermediate portion of the joining member. And a reinforcing rebar arranged in a space formed between the notches of the foundation beam, and a connecting structure of a building foundation beam for placing concrete in the space, the reinforcing rebar being Is a position on the extension line of the contact surface in the space, It is characterized in that it extends in the plane direction and the end thereof is disposed in the vicinity of the end face of the notch.

[0014]

[Operation] According to the connection structure of the foundation beams for construction having the above configuration,
Notches are formed in the side surface on the inner side of the building of the joint portion of each foundation beam, while the joining member straddles the notches of the two foundation beams to be joined and both ends thereof are abutted. Further, since the intermediate portion of the joining member is configured so as to float in the direction away from the cutout portion with respect to the contact surfaces at both ends, there is a space between the cutout portion of each foundation beam and the intermediate portion of the joining member. Will be formed. That is, this space is a space for placing concrete.

Further, reinforcing reinforcing bars are arranged in this space, but the positions of the reinforcing bars are arranged so as to extend on the extension line of the contact surface of the joining member and in the surface direction thereof. That is, the arrangement of the reinforcing bars is set at the boundary position between the space formed by the cutout portion of the foundation beam and the space formed by the intermediate portion of the joining member. In this way, the most effective reinforcement of the joint after concrete is poured is attempted. Such reinforcement bars can be installed by forming spaces on both sides of the foundation beam (notch portion) and the joining member side (intermediate portion).

Further, the joining member is fixed to the foundation beam at the abutting portion by a fixing member. Therefore, the foundation beams can be satisfactorily connected to each other by placing concrete in the above space in this state.

As a result, the foundation beams to be joined to each other before the concrete is placed are temporarily fixed by the joining member. Therefore, a relatively large jig for temporarily fixing the foundation beam separately from the foundation beam until the concrete is solidified is unnecessary. Furthermore, since concrete is poured to join the foundation beams in the space between the above-mentioned joining member and each foundation beam, it is necessary to form the concave portion in the joint part like the conventional foundation beams. It is not necessary to form a thick portion at the end that is the portion. Therefore, it is possible to reduce the transportation space when the foundation beams are stacked and transported, and the simplification of the configuration also facilitates the manufacturing.

[0018]

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

FIG. 1 is a partial plan view showing the structure of an embodiment according to the present invention, in which the foundation beams 10-1 and 10-2 are connected in a straight line and at the joint portions thereof, the foundation beams 10-1 and 10-2. 1
It shows an example of a T-shaped coupling portion configured to couple the third foundation beam 10-3 so as to be substantially orthogonal to 0-2. That is, in this embodiment, three foundation beams 10 are connected.

Joining member 3 which is a characteristic component of the present invention
0 is installed so as to extend between the foundation beams 10-1 and 10-3 and between the foundation beams 10-2 and 10-3, respectively (30-1, 30-2).

FIG. 2 is a schematic perspective view showing the overall construction of the joining member 30-2 (the 30-1 is also constructed to have the same shape as the left and right objects), and both ends thereof are bent in opposite directions. The contact portions 30a and 30b are formed. Further, each of the contact portions 30a, 30b is formed with two through holes 32, 34 for passing bolts or the like, which are fixing members, respectively.

The intermediate portion of the joining member 30 is constructed so as to be separated from the surface of the base beam 10 to be joined by a predetermined distance. That is, in the present embodiment, the contact portions 3 with the foundation beams 10-1 and 10-2, which are installed in series, respectively.
The base beams 10-1 and 10-2 are provided only at the bending length of 0b.
It is formed so that the part separates from. As a result, the three foundation beams 10-1, 10-2 and 10-3 to be coupled are opposed to each other with the space 100 in between.

Next, as shown in the partial perspective view of FIG. 3, the connecting portion of the foundation beams 10-1 and 10-2 is provided with a notch 36 which is another characteristic component of the present invention. It is configured by being formed, and there is no particular provision for a portion having a larger wall thickness than other portions such as a conventional foundation beam or a concave portion for placing concrete. Therefore, due to its simple structure, the work of molding and constructing concrete is extremely easy, and the space for stacking and transporting can be made smaller. Further, since the notch 36 is formed, a space is also formed on the side of the foundation beam 10 and the joining member 30 is formed.
A space 100 for concrete pouring is formed by combining with the space in the middle part of the above.

In this embodiment, the tapered portions 10a are formed at the corners on the space 100 side of the end portions of the foundation beams 10-1 and 10-2 which are installed in series and which face each other.

Next, the fixing means for fixing the joining member 30 to the foundation beam 10 side is the bolts 40 and 4 inserted through the through holes 34 and 32 formed in the joining member 30, respectively.
It is composed of two. Here, a resin portion 44 in which a synthetic resin is embedded in a predetermined range and a predetermined depth is provided on the surface of the contact portion of the foundation beams 10-1 and 10-2 with the joining members 30-1 and 30-2. The screwing operation with the bolts 40 is facilitated. That is, the joining member 30
Since the foundation beams 10 are tentatively connected to each other before the concrete is poured, the strength is not so required, and the strength can be sufficiently obtained by screwing the bolts into the resin portion 45. On the other hand, the through hole 32 of the joining member 30
The bolt 42 inserted in the side has a long threaded portion so as to protrude from the through hole of the other joining member 30-1, and a nut 43 is screwed into that portion to fix the bolt.

Next, a joint reinforcing bar 44 as a reinforcing bar which is another component of the present invention has a front shape as shown in FIG. That is, the upper arm 46a and the lower arm 46b are connected to each other by the two connecting arms 48a and 48b to form the whole. And
It is installed in the space 100 and is connected to an anchor bolt protruding from the foundation beam 10-3. It should be noted that the joint rebar 44 is provided in the space 100 before the joining member 30 is attached.
It is possible to perform the installation extremely easily by installing it in the part to be. Where the rebar 44
In order to maximize the strength after placing concrete, the installation position of is installed so as to extend on the extension line of the contact surface between the joining member 30 and the foundation beam 10 and in the surface direction. Further, both end portions of the joint reinforcing bar 44 are in a state of being close to the side end faces of the cutout portion 36, whereby the joint strength between the cast concrete and the foundation beam 10 is further strengthened.

The close state of both end portions of the joint reinforcing bar 44 and the side end surfaces of the cutout portion 36 is, for example, not shown, but the side end surfaces of the notch portion 36 are formed in a tapered shape so that both end portions of the joint reinforcing bar 44 are formed. Can also be achieved by approaching.

By placing concrete in the space 100 after the above-mentioned members are installed, the foundation 10-1,
10-2 and 10-3 can be combined accurately.
At the time of placing this concrete, foundation beams 10-1 and 1
Since the taper portions 10a are formed at the end portions of 0-2, concrete can smoothly flow into the portions and a good joined state can be obtained.

According to the above embodiment, the foundation beams 1 to be joined are
By simply connecting 0 by the joining member 30, each foundation beam 1 can be stably maintained until the concrete is solidified.
0 can be set. Therefore, it is not necessary to use a large-scale temporary fixing jig other than the foundation structure, and the foundation beam 10
It's easier to combine them.

Further, FIG. 5 shows an example in which two foundation beams 10-1 and 10-2 are connected in series unlike the case of FIG. 1, and in this case, the joining member 30 is as shown in the drawing. Further, both ends are formed as contact portions bent in the same direction, and the intermediate portion is separated from the side of the foundation beam 10 by the bending length. Similarly, foundation beams 10-1 and 10
A cutout portion 36 is also formed on the −2 side, and a space 100 is formed by the separated portion of the intermediate portion and the region of the cutout portion 36. And the formed space 100
In the same manner as above, the rebar reinforcement 44 is installed at the contact surface position as described in FIG. The other components are the same as in the case of FIG.

The present invention is not limited to the above embodiments, but various modifications can be made within the scope of the invention.

For example, the fixing means for fixing each joining member 30 to the foundation beam 10 is not limited to the construction of the bolts 40 and 42 and the resin portion 44 as in the embodiment, and is stable until the concrete pouring is completed. Various other means can be used as long as they are fixing means capable of connecting the respective foundation beams with each other.

[0033]

As described above, according to the connection structure of the foundation beams for construction according to the present invention, comparison is made between the foundation structures other than the foundation structure at the time of assembling the foundation beams to be connected, that is, until the end of concrete placement. Since it is not necessary to provide a temporary fixing jig that is large in size, the coupling work can be facilitated.

Since the concrete is placed in the space between the intermediate portion of the joining member and the cutout portion of the foundation beam, the structure of the joint portion of the foundation beam itself can be simplified. In addition, it is possible to reduce the transportation space of the foundation beam and to facilitate the manufacturing.

Further, in the space for placing concrete, reinforcing reinforcing bars are arranged at the boundary between the joining member and the foundation beam, and both ends of the reinforcing bar are brought close to the end face on the notch side. Better reinforcement with reinforcement.

[Brief description of drawings]

FIG. 1 is a partial plan view of an embodiment in which foundation beams are connected in a T shape.

FIG. 2 is a schematic perspective view of a joining member used in the embodiment of FIG.

FIG. 3 is a schematic perspective view of a connecting portion of a foundation beam used in the embodiment of FIG.

FIG. 4 is an explanatory diagram showing a configuration of a joint reinforcing bar used in the embodiment of FIG.

FIG. 5 is a partial plan view of an embodiment in which foundation beams are connected in series.

6A and 6B are partial plan views showing a schematic configuration of a conventional foundation beam coupling structure.

FIG. 7 is a perspective view showing a configuration of a conventional foundation beam.

[Explanation of symbols]

 10 Foundation Beam 30 Joining Member 30a, 30b Abutting Part 32, 34 Through Hole 36 Notch 38 Joint Reinforcing Bar 40, 42 Bolt

Claims (1)

(57) [Claims] 1. A notch formed by notching a predetermined range of an inner side surface of a building of each connection portion of foundation beams installed between independent foundations installed at predetermined locations in a building construction area, and both ends thereof. A joining member configured to abut over the cutout portions of the two base beams to be joined, and an intermediate portion between the corresponding contact portions is lifted up in a direction away from the cutout portion with respect to the abutting surface; Fixing means for fixing the abutted portion of the joining member to each of the foundation beams, and a reinforcing member arranged in a space formed between an intermediate portion of the joining member and a cutout portion of the foundation beam Reinforcing bar, and a connecting structure for a building foundation beam for placing concrete in the space, the reinforcing bar being at a position on an extension line of the abutting surface in the space and in a surface direction thereof. Extend it so that its end is placed close to the end face of the notch. Coupling structure of the building foundation beams and butterflies.