JP2507206B2 - 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.

Further, if the concrete does not sufficiently flow into the joint portion of the foundation beam 10 when pouring the concrete, it is difficult to obtain sufficient joint strength.

The present invention has been made to solve the above-mentioned problems, and its purpose is to eliminate the need to install a jig for temporary fixing when connecting the foundation beams to each other. To provide a structure for connecting foundation beams for construction, which can further simplify the structure of the construction, reduce the transportation space and facilitate manufacturing, and can easily and reliably inflow concrete during concrete pouring. Especially.

[0014]

In order to achieve the above object, a building foundation beam according to the present invention comprises foundation beams which are adjacent to each other and are erected between independent foundations installed at predetermined locations in a building construction area. In a joint structure of a building foundation beam for joining, both end portions are abutted over a predetermined portion of a joining portion of each joining foundation beam, and an intermediate portion between corresponding contact portions is joined together. A joining member configured to be separated from the surface by a predetermined distance and having a space of the separated portion as a space for concrete pouring, fixing means for fixing the abutted portion of the joining member to each of the foundation beams, and A reinforcing structure arranged in a space, and a connecting structure of a building foundation beam for placing concrete in the space, the connecting side end portions of the respective foundation beams facing the space, respectively. By making it tapered Characterized in that it comprises a V-shaped groove that is continuous with the space which is.

[0015]

[Operation] According to the connection structure of the foundation beams for construction having the above configuration,
A joining member is installed at a predetermined location of the joining portion of the foundation beams to be joined, and the joining members are abutting portions whose both ends abut on the respective foundation beams, and an intermediate portion thereof is a predetermined portion from the surface of each foundation beam. It is formed as a part that separates and separates. Therefore, both ends are abutted so as to straddle the foundation beams to be joined, and a space is formed between the intermediate portion and the surface of the foundation beams to be joined. A reinforcing bar is arranged in the space, and the joint 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.

Further, since the connecting side end portions of the respective foundation beams to be joined, which face the concrete pouring space, are each tapered, and a continuous V-shaped groove is formed in the space portion, The concrete poured into the concrete pouring space smoothly flows into the V-shaped groove. Therefore, the concrete contact surface of each foundation beam to be joined is widened by the V-shaped groove which is its tapered portion,
Stronger strength can be obtained by solidifying concrete. That is, the foundation beam is not provided with a concave portion as in the conventional case, and concrete is cast between the foundation beam and the joining member, but a V-shaped groove is formed at the end portion on the coupling side of the foundation beam. It is intended to further increase its strength.

Further, as described above, the foundation beams to be joined in the state 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 the concrete is poured into the space between the above-mentioned joining member and each foundation beam, the concrete for joining the foundation beams is formed at the joint portion to form the concave portion in the joint portion like the conventional foundation beam. It is not necessary to form a thick portion at one end. 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, the connecting portion of the foundation beams 10-1 and 10-2 is constructed by forming a notch 36 in the connecting portion as shown in the partial perspective view of FIG. There are no particular parts such as the foundation beams of the above, where the wall thickness is larger than the other parts, or recesses for placing concrete.

Therefore, due to its simple structure, the work of molding concrete is extremely easy, and the space for stacking and transporting the concrete can be made smaller.

Then, the foundation beams 10-1 installed in series
10-2, which are one of the characteristic elements of the present invention, are formed at the opposite ends, that is, the portions of the joining ends facing the space 100, respectively. These tapered portions 10a allow the space 1 to be formed at the end of the foundation beam 10 on the coupling side.
A V-shaped groove continuous with 00 is formed. As a result, the contact area of the concrete cast in the joint portion to the foundation beam 10 is expanded, and the joint state is further strengthened.

Next, the fixing means for fixing the joining member 30 to the foundation beam 10 side is the bolts 40 and 4 inserted into 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 splicing rebar 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 consideration of the strength after placing concrete, the installation position of is installed so as to extend to the position on the extension line of the contact surface between the joining member 30 and the foundation beam 10.

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, the tapered portion 10a
Since the open side of the V-shaped groove formed by is continuous to 100, the concrete can smoothly flow into the V-shaped groove and a good connection 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. The rebar 44 is installed in the formed space 100. The taper portion 10a
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.

Further, since concrete is placed in the space between the joining member and the foundation beam, the structure of the joint portion of the foundation beam itself can be simplified.
It is also possible to achieve a reduction in the transportation space for the foundation beam and simplification of manufacturing.

Further, the V-shaped groove formed by the taper portion formed on the foundation beam expands the space for concrete placing to the foundation beam side, and the strength of the joint portion after the solidification of the concrete is increased.

[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 10a Tapered Part 30 Joining Member 30a, 30b Abutting Part 32, 34 Through Hole 38 Joint Reinforcing Bar 40, 42 Bolt

Claims (1)

(57) [Claims] 1. A combined structure of building foundation beams for connecting mutually adjacent foundation beams erected between independent foundations installed at predetermined locations in a building construction area, wherein both ends are connected to each other. The connecting portion of the foundation beam is abutted over a predetermined location, and the intermediate portion between the contact portions is configured to be separated from the surface of each of the foundation beams separated by a predetermined distance. And a fixing member for fixing the abutted portion of the joining member to each of the foundation beams, and reinforcing reinforcing bars arranged in the space, and concrete is poured into the space. A structure for connecting a building foundation beam, comprising: a V-shaped groove continuous to the space, which is formed by tapering the connection-side ends of the portions of the foundation beams facing the space. Characteristic building base Coupling structure of the beam.