EA044303B1 - SHOE FOR ATTACHING REINFORCED CONCRETE COLUMNS TO THE BASE - Google Patents

Description

Field of technology to which the invention relates

The invention relates to a shoe for fastening reinforced concrete columns to the base, as defined in the preamble of independent claim 1.

Prior Art

US 7,726,091 discloses a support shoe for a concrete column having a base plate and two side plates located on the side edges of the base plate and projecting upward at right angles from the base plate. At least one reinforcing bar is connected to the support shoe to transmit forces to the concrete column. The two side edges and, accordingly, the side plates connected thereto are arranged at an acute angle relative to each other, the two side plates being formed as separate components attached to the base plate.

The essence of the invention

The object of the invention is to provide a column shoe which has good rigidity and can be manufactured with a small cross-section, which would also allow its use in reinforced concrete columns with a small cross-section.

The column shoe according to the invention is characterized by the definitions of independent claim 1 of the claims.

Preferred embodiments of the column shoe are defined in the dependent claims.

List of drawing figures

Next, the column shoe will be disclosed in more detail with reference to the drawings, in which:

fig. 1 shows one embodiment of a column shoe;

fig. 2 shows the column shoe shown in FIG. 1, from a different angle;

fig. 3 shows the column shoe shown in FIG. 1, from a different angle;

fig. 4 shows the column shoe shown in FIG. 1, bottom;

fig. 5 shows the column shoe shown in FIG. 1, top.

Information confirming the possibility of implementing the invention

Next, a column shoe for attaching reinforced concrete columns to a foundation and some embodiments and variations of the column shoe will be described in more detail.

The column shoe consists of a bottom plate 1 with a bolt hole 2. The column shoe further includes a side wall element 3 attached to the bottom plate 1 to form a bolt body 4 from the bottom plate 1 and the side wall element 3. If a column shoe is poured with concrete in a reinforced concrete column and said reinforced concrete column is secured to the base by means of the column shoe, a threaded rod or the like protruding from the base is inserted into the bottom plate 1 in a bolt hole 2, and nuts are screwed onto the threaded rod to secure the shoe. columns on a threaded rod.

The column shoe further includes main connecting means 5 attached to the side wall member 3 for connecting the column shoe and the reinforced concrete column to each other.

The column shoe additionally contains rear connecting means 6.

In the column shoe, the side wall element 3 is a one-piece structure consisting of two side wall sections 7 and a connecting section 8 connecting the two side wall sections.

The column shoe is located symmetrically relative to the imaginary vertical central plane A of the bolt body 4.

In the column shoe, the angle α between the side wall sections 7 is from about 40 to about 60°, preferably from about 45 to about 50°, for example about 48°.

In the column shoe, the rear tie means 6 comprise a rear anchor 9 attached to the rear surface 12 of each of the side wall sections 7 facing away from each other. Each rear anchor 9 has a fastening portion 10 by which the rear anchor 9 is welded to said rear surface 12 of the side wall section by welding along the fastening portion 10, and a vertical portion 11 extending parallel to the main tie means 5. The rear tie means 6 have the following dimensions and attached to said rear surface 12 of the side wall sections so that the vertical portions 11 of the rear anchors 9 are spaced apart from each other.

The rear tie means 6 will be securely attached to the side wall section 7 because the rear anchor components 9 are securely attached to said rear surface 12 of the side wall section by welding along the fastening portion 10. The narrow angle α between the side wall sections 7 allows the use of two separate anchors. Due to the angle α between the side wall sections 7, the cross-section of the column shoe is small, which makes it easy to install, for example, 4 column shoes - one column shoe at each corner - on a column with a small cross-section. Due to the narrow angle α between the sections 7 of the side wall, the cross-section of the column shoe is small, which leads to savings in material in the column shoe and, accordingly, to a reduction in material costs and

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Claims (1)

reducing the weight of the column shoe, which in turn makes the column shoe easier to handle. The narrow angle α between the side wall sections 7 also leads to an increase in the rigidity of the bolted body 4 of the column shoe. Thanks to this, the side wall element 3 can be made of a material of thinner thickness while maintaining the required rigidity. The presence of rear connecting means 6, consisting of two separate rear anchors 9, facilitates the location of the column shoe relative to the reinforced concrete column reinforcement structure during the manufacture of reinforced concrete columns by casting. Using two separate rear anchors 9 also requires less space than using a single rear anchor, allowing the column shoe to be smaller, which in turn allows the column cross-section in which the column shoe is to be used to be smaller. The use of two separate rear anchors 9 in a column shoe also distributes the forces on the column using the column shoe more evenly than is the case in a column equipped with a single rear anchor. The rear anchors 9 are preferably, but not necessarily, identical and located symmetrically relative to the imaginary vertical center plane A of the bolt body 4. The main adhesive means 5 preferably, but not necessarily, comprise two main adhesive means 5 such that one main adhesive means 5 is attached to the inner surface 13 of each of the side wall sections 7 facing each other. The main connecting means 5 are preferably, but not necessarily, identical and arranged symmetrically with respect to the imaginary vertical central plane A of the bolt body 4. The fastening portion 10 of each rear anchor 9 preferably, but not necessarily, extends perpendicular to the vertical portion 11 of the rear anchor 9. The bolt hole 2 in the bottom plate 1 is preferably, but not necessarily, located symmetrically with respect to the imaginary vertical center plane A of the bolt body 4. In the side wall element 3, the connecting portion 8 is preferably, but not necessarily, curved, as shown in the figures, and the two side wall sections 7 are preferably, but not necessarily, flat, as shown in the figures. The flat side wall sections 7 facilitate the attachment of the rear anchors 9 by welding to the side wall sections 7 and allow a stronger connection between the side wall sections 7 and the rear anchors 9 since the welds between the side wall sections 7 and the rear anchors 9 can be linear. The presence of a curved connecting portion 8 makes the side wall element 3 more rigid. The fastening portion 10 of each rear anchor 9 preferably, but not necessarily, extends parallel to the bottom plate 1, as shown in the drawings. The imaginary vertical center plane A of the bolt body 4 preferably, but not necessarily, does not intersect with any of the rear anchors 9 as shown in the figures. This simplifies the manufacture of the column and makes it easier to install the column shoe into the column casting mold. Each of the rear anchors 9 is preferably, but not necessarily, located at a distance from the imaginary vertical center plane A of the bolt body 4, as shown in the drawings. This simplifies the manufacture of the column and makes it easier to install the column shoe into the column casting mold. It will be apparent to one skilled in the art that as technology advances, the basic idea of the invention may be implemented in a variety of ways. Therefore, the invention and its embodiments are not limited to the above examples, but may vary within the scope of the claims. CLAIM 1. A column shoe for fastening reinforced concrete columns to a base, wherein the column shoe contains a bottom plate (1) with a bolt hole (2), a side wall element (3) attached to the bottom plate (1) with the formation of a bolted body (4) from the bottom slab (1) and side wall member (3), main tie means (5) attached to the side wall member (3) for tying the column shoe and the reinforced concrete column to each other, and rear tie means (6), wherein the member (3 ) of the side wall is a one-piece structure containing two flat sections (7) of the side wall and a connecting section (8) connecting the two flat sections (7) of the side wall, and the bolt body (4) is symmetrical with respect to the imaginary vertical central plane A of the bolt body (4), characterized in that the angle α between the flat sections (7) of the side wall is from about 40 to about 60°, the rear tie means (6) comprise two separate rear anchors (9), each of which is attached to the rear surface ( 12) one of the two flat sections (7) of the side wall, with the rear surfaces (12) of the two flat sections (7) of the side wall directed away from each other, -