KR20190061792A - Foundation equipped with linearly arranged piles - Google Patents

Abstract

The present invention relates to a pile foundation arranged in a row, which arranges a pile in a row so as to correspond to a row of a vertical member such as a pillar or a wall when constructing the pile on a lower portion of a foundation plate, thereby being possible to drastically reduce thickness and width of the foundation plate to improve constructability and economic feasibility. A pile foundation arranged in a row of the present invention comprises: a foundation plate supporting a lower portion of a vertical member of a building; and a plurality of piles provided on a lower portion of the foundation plate, wherein the pile is arranged in a row on the lower portion of the foundation plate in a position corresponding to the row of the vertical pile.

Description

{Foundation equipped with linearly arranged piles}

In the present invention, when the pile is placed under the base plate and the piles are arranged in a line so as to correspond to the columns of the vertical member such as columns or walls, the thickness and width of the base plate can be greatly reduced, It is about file basics.

In order to transmit the vertical load of the building to the ground, a base plate such as a row foundation or a mat foundation is installed on the lower part of a vertical member such as a column or a wall.

In general, if the grounding force of the foundation foundation is insufficient, the load of the structure should be transferred to a well-sanded sandstone or rock layer deep enough to have acupressure strength.

For this purpose, the supporting force is secured by the supporting force of the end of the file and the frictional force of the main body.

The base plate serves to distribute the load of the upper vertical member to the pile.

As shown in FIG. 1, the file bases are arranged in two rows on both sides of the vertical member 1 under the foundation plate 2 due to the file construction error, the strength limit of the concrete file, and the like.

However, in this case, since the moment due to the file reaction force must be taken into consideration, the thickness of the base plate should be increased.

In addition, since the concrete strength has greatly increased in recent years, when the concrete pile is arranged in two rows, the entire strength of the pile can not be utilized, which is uneconomical.

In addition, when placing files in two rows, if some of the files are damaged or erroneous, a new file should be installed in the vicinity of the target file. However, when a file is additionally installed on one side, both sides become asymmetric, which causes an increase in eccentricity, which is structurally very disadvantageous.

KR 10-0583880 B1

In order to solve the above-mentioned problems, the present invention is to provide an economical lay-up pile foundation by reducing the width and thickness of the base plate when the pile is placed under the foundation plate, thereby reducing the amount of concrete required.

The present invention is to provide a tandem pile foundation capable of maintaining a predetermined pile spacing in a row while fully supporting the upper load by utilizing the full strength of the concrete when using a high strength concrete pile.

The present invention seeks to provide a tandem file base that can prevent eccentricity due to construction of a reinforcement file even if some files are damaged or eroded.

According to a preferred embodiment of the present invention, there is provided a building comprising a base plate for supporting a lower portion of a vertical member of a building and a plurality of files provided at a lower portion of the foundation plate, Wherein the base station is arranged in a line.

According to another preferred embodiment of the present invention, a band-shaped stiffener formed by bending a band is provided in the base plate on the upper portion of the file so that the band-shaped stiffeners are orthogonal to each other in both directions.

According to another preferred embodiment of the present invention, the band-shaped stiffener includes an upper support portion provided in a horizontal direction, a connection support portion formed by bending one end or both ends of the upper support portion downwardly, Wherein the upper support is configured to support the upper reinforcing bars of the foundation plate, wherein the lower support is configured to be repeatedly formed.

According to another preferred embodiment of the present invention, the center of the band-shaped stiffener is provided with a pile fixing part in which a pair of connection supporting parts are elongated downward and the lower supporting part is located in the hollow of the pile. to provide.

According to another preferred embodiment of the present invention, a pile base of the band type stiffener is provided at one side of the pile fixing part, and a pile mounting part is mounted on the upper end of the pile.

According to another preferred embodiment of the present invention, the connecting support portion located at the outermost portion of the band-shaped stiffener extends downward and is supported on the upper surface of the ground or the shrink concrete layer.

According to another preferred embodiment of the present invention, a trussed stiffener is provided in a base plate on the upper part of the file so that the truss stiffeners are orthogonal to each other in both directions.

The present invention has the following effects.

First, it is possible to provide a tandem batch file base which can significantly reduce the thickness and width of the foundation plate by arranging the files in a line so as to correspond to columns of vertical members such as pillars and walls upon installation of the files located under the foundation plates . Accordingly, it is economical to reduce the amount of concrete and reinforcing steel required for the base plate.

Second, when high strength concrete with strength of 80 MPa or more is used as a base plate concrete, it is possible to fully support the upper load without reducing the pile spacing compared to the prior art while making maximum use of the pile strength. Therefore, the number of files can be reduced, and the air for the file construction can be greatly reduced, which is economical.

Third, when some files are damaged or eroded, it is structurally safe to reinforce the supporting force without eccentricity when the reinforcement file is installed on the file liner.

1 is a sectional view showing a conventional file basis;
2 is a cross-sectional view showing the base line file of the present invention;
3 is a plan view showing the base line file of the present invention;
4 is a view showing a compression zone in the case of eccentric arrangement of a file;
5 is a perspective view showing the foundation pile base of the present invention having a band type stiffener.
FIG. 6 is a cross-sectional view showing the base filament base of the present invention with band type stiffeners. FIG.
FIG. 7 is a perspective view showing a coupling relation between a band-shaped stiffener and an upper reinforcing bar; FIG.
8 is a cross-sectional view showing a coupling relationship between a band type stiffener and a pile.
9 is a cross-sectional view showing a coupling relationship between a band type stiffener and a file provided with a file mounting portion.
FIG. 10 is a cross-sectional view showing the foundation pile foundation of the present invention with a truss reinforcement. FIG.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.

FIG. 2 is a cross-sectional view showing the basic arrangement file of the present invention, and FIG. 3 is a plan view showing the basic arrangement file of the present invention.

2, 3, and the like, the row arrangement file base of the present invention includes a base plate 2 for supporting a lower portion of a vertical member 1 of a building and a plurality of files (not shown) provided at a lower portion of the base plate 2 3, characterized in that the piles (3) are arranged in a line below the base plate (2) at positions corresponding to the rows of the vertical members (1).

The vertical member 1 includes a base or a pillar or the like.

The base plate 2 may be made of reinforced concrete.

Abandoned concrete can be installed in the lower part of the base plate 2.

The file 3 may be a concrete file such as a PHC file.

In the present invention, a plurality of the piles (3) are arranged in a row below the base plate (2) at positions corresponding to the rows of the vertical members (1).

When the vertical member (1) is a column, the piles (3) are arranged below the positions of the column columns.

If the vertical member (1) is a wall, the pile (3) is arranged below the wall position.

When the pile 3 is disposed below the vertical member 1, a moment due to the eccentric distance between the vertical member 1 and the pile 3 does not occur in the base plate 2. [ Therefore, the thickness of the base plate 2 can be made thinner than the conventional one.

In addition, since the file 3 is changed from the two-row arrangement to the one-row arrangement, the width of the base sheet 2 can be greatly reduced.

Accordingly, it is possible to minimize the width of the base plate 2 as well as the thickness thereof, thereby reducing the amount of concrete and the amount of reinforcing steel required.

In addition, since the present invention arranges the files (3) arranged in two rows in a row, it is possible to consider a method of arranging the adjacent files (3) in a smaller space. However, by using high-strength concrete having a strength of 80 MPa or more, it is possible to sufficiently support the upper load without reducing the interval between adjacent piles 3.

Therefore, the number of files (3) can be reduced, and therefore, the air for constructing the file (3) can be greatly reduced, which is economical.

On the other hand, if some files 3 are damaged or erroneous, reinforcement can be done without eccentricity when the reinforcement file is installed on the existing file 3 column.

FIG. 5 is a perspective view showing the base of the batch file of the present invention provided with a band-type stiffener, and FIG. 6 is a perspective view showing the arrangement of the present invention with a band- Sectional view showing a file basis.

As shown in FIGS. 5 and 6, a band-shaped stiffener 4 formed by bending a band may be provided in the base plate 2 above the pile 3 so as to be orthogonal to each other in both directions.

A concentrated load by the vertical member 1 and a reaction force by the lower pile 3 act on the base plate 2 positioned between the vertical member 1 and the pile 3. [ And the bending moment hardly occurs in the base plate 2 due to the arrangement of the files 3 in a line.

Therefore, since the base plate 2 exhibits a behavior corresponding to a D region (Disturbed region) to which a concentrated load is applied rather than a B region (Bernoulli region) to which the linear strain and beam theory are applied, Can be designed by a strut-tie model.

4, when eccentricity occurs between the vertical member 1 and the file 3 due to a construction error, a concrete compression (compression) force is exerted between the vertical member 1 and the file 3, strut (S) is formed.

In this case, the load of the vertical member 1 is transmitted to the pile 3 by the compression band S, and longitudinal cracks may occur in the compression band S when the load is increased.

Therefore, shear reinforcement across the compression zone S is necessary to prevent longitudinal compression of the compression zone S. [

The band type stiffener 4 reinforces the compression band S between the pile 3 and the vertical member 1 so that the load of the vertical member 1 is properly transferred to the pile 3 even if eccentricity is generated due to a construction error .

Fig. 7 is a perspective view showing the coupling relationship between the band-shaped stiffener and the upper reinforcing bar.

6 and 7, the band-shaped stiffener 4 includes an upper support portion 41 provided in a horizontal direction, a connection support portion 41 formed by bending one end or both ends of the upper support portion 41 downward And the lower supporting portion 43 is formed by horizontally bending the lower end of the connection supporting portion 42. The upper supporting portion 41 supports the upper reinforcing bar 21 of the base plate 2 .

When the foundation plate (2) is installed, the upper reinforcing steel (21) and the lower reinforcing steel (22) are placed before the concrete is laid. Since the upper reinforcing bar 21 is disposed at a position higher than the bottom of the upper reinforcing bar 21, the lower reinforcing bar 22 is placed to separate the upper reinforcing bar 21 from the floor, Is required.

Therefore, it is not necessary to provide a separate reinforcing bar (reinforcing bar) for supporting the upper reinforcing bars 21 by forming the upper supporting portion 41 in the horizontal direction on the upper portion of the band-shaped reinforcing member 4.

When the band type stiffener 4 is used, the band type stiffener 4 is disposed on the upper side of the lower reinforcing bar 22 after the lower reinforcing bar 22 of the base plate 2 is laid, The upper reinforcing bars 21 may be placed on the lower reinforcing bars 41 in order.

The band-like stiffener 4 is preferably formed by bending a steel band, but it is also possible to manufacture the band-shaped stiffener 4 by using a synthetic resin or the like.

Fig. 8 is a cross-sectional view showing the coupling relationship between the band-shaped stiffener and the pile, and Fig. 9 is a cross-sectional view showing the coupling relationship between the band-shaped stiffener and the pile.

8, the center of the band-shaped stiffener 4 has a pair of connection supporting portions 42 extending downwardly so that the lower holding portion 43 is located in the hollow portion 31 of the pile 3 And a file fixing unit 4a may be provided.

Generally, when the file (3) is constructed, the plurality of files (3) have different top heights.

Therefore, after the file 3 is constructed, each file 3 is cut at the upper end, and the head is reinforced so that the upper end of the file 3 is fixed in the base plate 2 and integrated.

At this time, conventionally, reinforcing bars extending from the depth of the hollow portion 31 of the pile 3 to the inside of the foundation board 2 are laid out and the foundation concrete is laid in order to structurally integrate the piles 3 into the foundation board 2 Respectively.

Alternatively, in the present invention, the connecting and supporting portions 42 and 43 are extended from the center of the band-shaped stiffener 4 to the inside of the hollow portion 31 to form the pile fixing portion 4a without a separate reinforcing bar. As a result, the band-like stiffener 4 can serve as a reinforcing bar for reinforcement of the head, so that a separate reinforcing bar construction process can be omitted.

In order to allow the foundation concrete to be laid only up to a certain depth in the hollow portion 31 of the pile 3, a blocking plate 43 for closing the hollow portion 31 of the pile 3 is provided on the lower pile portion 43 of the pile fixing portion 4a 5) may be combined.

8 and 9, a pile fixing part 4b is provided at one side of the pile fixing part 4a of the band-shaped stiffener 4 and the lower pile part 43 is fixed to the upper end of the pile 3 .

The band-shaped stiffener 4 can be easily installed by mounting the file mounting portion 4b of the band-like stiffener 4 on the upper end of the pile 3. [ In addition, when the concrete is poured, the band-shaped stiffener 4 can be prevented from being pushed down by the putting pressure.

In order to prevent the band-like stiffener 4 from being detached from its position during the installation of the base plate 2, the connection support portion 42 of the file fixing portion 4a is bent outwardly as shown in Fig. 9, The file holding portion 4b can be formed.

8, the connection supporting portion 42 'located at the outermost portion of the band-shaped stiffener 4 may extend downward and be supported on the upper surface of the ground or the shrinkage concrete layer.

As shown in FIG. 6 and the like, it is preferable that the band-shaped stiffener 4 is mounted on the lower reinforcing bar 22 to secure the covering thickness.

However, when the outermost end of the band-shaped stiffener 4 is the connection support portion 42 ', the lower end of the connection support portion 42' is difficult to support on the upper portion of the lower reinforcing bar 22. Even when the outermost end of the band-shaped stiffener 4 is the lower stiffener 43, the lower stiffener 43 is connected to the connection support 42 in a cantilever fashion, so that the end of the band- It is difficult to support properly.

Therefore, the outermost connection supporting portion 42 'of the band-shaped stiffener 4 can be extended downward to be supported on the upper surface of the hard ground or the shredded concrete layer to sufficiently support the installation load at the end portion of the band- And it is also possible to secure the thickness of the lower covering layer of the band-shaped stiffener 4.

FIG. 10 is a cross-sectional view showing the foundation pile base of the present invention with a truss reinforcement. FIG.

As shown in FIG. 10, the truss reinforcement 6 may be provided in the base plate 2 above the piles 3 so as to be orthogonal to each other in both directions.

That is, the truss reinforcement 6 can be arranged in a well shape in a plan view.

The truss reinforcement 6 may serve as a supporting reinforcement for reinforcing the D region and supporting the lower portion of the upper reinforcing bar 21 of the foundation plate 2. [ In addition, the truss reinforcement 6 reinforces the head of the pile 3.

In the case where the blocking plate 5 is provided in the hollow 31 of the pile 3, the lancet 71 is joined to the center of the truss reinforcement 6 and the blocking plate 5 is fixed to the lower side of the lancet 71 .

1: vertical member
2: base plate
21: Upper reinforcing bar
22:
3: File
31: hollow
4: Band type stiffener
4a: File fixing unit
4b: File mounting part
41: upper support
42:
43:
5:
6: truss reinforcement
71: The month

Claims (7)

(2) for supporting a lower portion of a vertical member (1) of a building and a plurality of piles (3) provided at a lower portion of the foundation plate (2)
Characterized in that the piles (3) are arranged in a line below the base plate (2) at positions corresponding to the rows of the vertical members (1).
The method of claim 1,
Characterized in that band-shaped stiffeners (4) formed by bending bands are provided in the base plate (2) above the piles (3) so as to be orthogonal to each other in both directions.
3. The method of claim 2,
The band type stiffener 4 includes an upper support portion 41 provided in a horizontal direction, a connection support portion 42 formed by bending one end or both ends of the upper support portion 41 downwardly, Wherein the upper support part (41) supports the upper reinforcing bar (21) of the foundation board (2).
4. The method of claim 3,
The band-shaped stiffener 4 has a pile fixing part 4a in which a pair of connection supporting parts 42 are elongated downward and the lower supporting part 43 is located in the hollow 3 of the pile 3. [ Lt; RTI ID = 0.0 > a < / RTI >
5. The method of claim 4,
Characterized in that at the side of the pile fixing part (4a) of the band-shaped stiffener (4), a pile mounting part (4b) on which the lower holding part (43) is mounted on the upper end of the pile (3) is provided.
4. The method of claim 3,
Characterized in that the connection support part (42 ') located at the outermost part of the band-shaped stiffener (4) extends downward and is supported on the upper surface of the ground or abandoned concrete layer.
The method of claim 1,
Characterized in that a truss reinforcement (6) is provided in the base plate (2) above the pile (3) so as to be orthogonal to each other in both directions.

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