JP2000017729A - Method of filling won-contractive mortar in lower part of steel framed column base - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a construction method allowing filling work of non- contractive mortar in the lower part of a steel framed column base to be accomplished advantageously costwise and setting the space dimension between the edge of the steel framed column base and a formwork to specific space dimension easy for construction work. SOLUTION: A paper made formwork 5 formed by bending a strip paper material of a regenerated paper is used for the base formwork of a steel framed column 1 and the paper made formwork 5 is installed around the steel framed column base 2 after which non-contractive mortar is filled between the formwork 5 and the steel framed column base 2. A projected part 10 for setting the space is formed by bending a paper piece provided integrally with the strip paper material and, by making the projected part abut on the edge of the steel framed column base 2, the space dimension between a formwork body 5a and the steel framed column base 2 can be set to a specific dimension.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for filling a non-shrink mortar into a lower portion of a steel column base.

[0002]

2. Description of the Related Art In the construction of a steel-framed building, as shown in FIG. 5, a base 53 of a steel column 52 is installed on a foundation 57 via a leveling mortar 56 for level maintenance. , Filling the lower part of the base 53 with a non-shrink mortar.

[0003] Conventionally, this non-shrink mortar filling is shown in FIG.
(B) As shown in (b), wooden piers 51 are installed around the base 53 of the steel column 52 to form a formwork 54.
A method of filling the non-shrinkable mortar between the mold 54 and the base 53 or, as shown in FIG. 5C, surrounding the base 53 of the steel column 52 by raising the mortar in a mountain shape. 55 is formed, and the space between the enclosure 55 and the base 53 is filled with a non-shrink mortar.

[0004]

However, in the construction using the formwork 54 composed of the wooden crosspieces 51, there is a problem that the construction cost is high because the crosspieces 51 forming the formwork 54 are expensive. . Therefore, it is conceivable to recycle and use the piers 51, but since concrete is attached to the piers 51 by filling with mortar,
It could not be recycled.

In order to fill the non-shrink mortar into the lower portion of the base 53 with good quality, a mold 54 and a base 53 are required.
Is required to be set to a predetermined size. However, in the construction using the formwork 54 with the above-mentioned piers 51, the space for setting the space is provided separately from the formwork 54. A jig had to be prepared, and the setting work of the formwork had to be performed using this jig, which was troublesome.

On the other hand, according to the method of forming and filling the mortar box 55 around the base 53 of the steel column 52, the interval between the base 53 and the box 55 is apt to become gusset due to the construction. However, it was difficult to ensure the quality of the products.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a method capable of cost-effectively filling mortar into a lower portion of a steel column base. In addition, the present invention can advantageously perform the mortar filling work on the lower part of the steel column base in terms of cost, and furthermore, the distance between the edge of the steel column base and the formwork can be easily adjusted in construction, It is an object of the present invention to provide a method that can be set to a predetermined interval dimension and that can perform mortar filling work on a lower portion of a steel column base while ensuring quality.

[0008]

The object of the present invention is to use a formwork made of a paper material as a base formwork of a steel column, install the formwork around the steel column base, and place the formwork between the formwork and the steel column base. And filling the non-shrink mortar into the lower part of the base of the steel column, characterized by filling the non-shrink mortar from the base.

In the above-described method, since the formwork made of paper is used as the base formwork of the steel column, the formwork cost is reduced as compared with the case where the formwork is formed using a wooden pier. As a result, the construction can be performed advantageously in terms of cost. In particular, by using recycled paper as the paper material for the formwork, the use of the recycled paper can be promoted, and the mass production of the recycled paper can further reduce the cost of the formwork and the construction cost.

In the above method, a piece of paper which is integrally connected to a paper material constituting a main body of the base form is bent to form a convex portion projecting inward from the main body of the form. By contacting the convex part with the edge of the base of the steel column,
By setting the spacing dimension between the formwork body and the base of the steel column to a predetermined dimension, it is possible to eliminate the need to use a jig for spacing setting prepared separately from the formwork,
The spacing between the edge of the steel column base and the formwork can be easily set to a predetermined spacing in construction. Therefore, the space between the edge of the steel column base and the formwork can be set to a predetermined space in this manner, thereby ensuring the quality of the work for filling the lower part of the base with the non-shrink mortar. You can go.

That is, for the first time in connection with the fact that the base form is made of a paper material, it is possible to provide a projection for setting an interval integrally with the base form itself. Due to the synergistic effect of being made of paper and having the convexity for spacing set integrally with the base formwork itself, the space between the edge of the steel column base and the formwork, It is possible to easily set a predetermined interval size in construction.

[0012]

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 and FIG. 2 show that a square base 2 of a steel column 1 is placed on a foundation 4 via a leveling mortar 3 for level holding, and then a paper material is wrapped around the square base 2. FIG.

The mold 5 is formed using a thick band-shaped paper material 6 made of recycled paper as shown in FIG. That is, the mold frame 5 uses this band-shaped paper material 6 and bends it at a predetermined length position to form a square shape so as to surround the base 2, or uses a plurality of band-shaped paper materials 6. This is bent at a predetermined length position, cut, or combined and joined to form a square shape so as to surround the base 2. In this way, by using the strip-shaped paper material 6 as a material and molding it to form the formwork 5, the material for the formwork 5 can be stored and managed in a space-efficient manner without bulking. Can also
Since it is lightweight, it is easy to handle.

As shown in FIG. 3, the band-shaped paper material 6 has a first strength weakness line 7 extending over the entire length in the width direction in order to eliminate the need to measure and determine the position of bending or cutting.
Are provided, and the band-shaped paper material 6 is bent or cut at the weak strength lines 7.
The mold 5 having a desired size can be easily formed.

The first inferior strength lines 7 are formed so that the strip-shaped paper material 6 can be used for a plurality of types of bases 2 having different plane dimensions. That is,
Specifically, for example, the total length of the band-shaped paper material 6 is set to 1200
mm, as the first strength inferiority lines 7 ... strength inferiority line corresponding to 200 mm square, strength inferiority line corresponding to 250 mm square, strength inferiority line corresponding to 300 mm square, and strength inferiority corresponding to 350 mm square. A weak line and a strength weak line corresponding to a 400 mm square are provided, and a first strength weak line corresponding to the plane size of the base 2 is selected from the first strength weak lines, and the first strength By bending or cutting at the inferior line, it is possible to form a mold 5 that fits the base 2 of its planar dimensions. In addition, although not shown, by attaching each dimension mark to the inferior line, the correspondence can be easily performed visually.

As shown in FIGS. 1 and 2, the paper form 5 is provided with an outward flange 9 for attaching the form 5 to the upper surface of the foundation 4. As shown in FIG. This flange 9
Also, a belt-shaped paper material 6 as a material is formed by bending at a position inward by a predetermined dimension from one end position in the width direction thereof. In order to facilitate this bending, a band-shaped paper material 6
As shown in FIG. 3, a second strength inferiority line 8 extending over the entire length in the length direction is provided. The band-shaped paper material 6 is provided with a plurality of the second weakness lines 8 at different positions in the width direction.
The height of the mold 5 can be set to an appropriate size in accordance with the height position of the base 2 from the base 4 by selecting any one of the above and bending.

In order to fill the lower part of the base 2 with the non-shrinkable mortar, the mold 5 needs to be set at a predetermined distance from the base 2. As a setting means, as shown in FIGS. 1 and 2, a protruding portion 10 projecting to the edge of the base 2 and abutting on the edge of the base 2 is provided in the peripheral main body 5 a of the mold 5 in the circumferential direction. Are provided.

In order to form the projection 10 for setting the interval,
In the present embodiment, as shown in FIGS. 3 and 4, the strip-shaped paper material 6 has a plurality of paper pieces 11 on one side in the width direction.
Are provided integrally with the band-shaped paper material 6 at intervals. Each piece of paper 11 is shaped like a bold cross and bent inward,
The three protruding pieces 11a at the tip end are slits 12 of the band-shaped paper material 6.
Are formed to form a rectangular parallelepiped convex portion 10. Projection piece 1 from slit 12
In order to prevent detachment of 1a, the protruding pieces 11a are slits 12 ...
Bend laterally on the other side. It should be noted that the paper piece portion 11 is provided with a bending strength line 13 for bending. As the projection for setting the interval, other projections may be used.

The mold 5 is installed in such a manner that the above-mentioned rectangular projections 10 are brought into contact with the edge of the base 2 in a state where the above-mentioned rectangular projections 10 are formed. And a flange 9 with a concrete nail 14
Is performed on the basis 4. In order to prevent the mold 5 from bulging outward when filling the mortar, the mold 5 and the column 1 may be connected with an adhesive tape such as a gum tape as necessary. Thereby, the interval between the mold body 5a and the base 2 can be set to a predetermined appropriate interval, for example, 25 mm.
In this state, the space between the mold 5 and the base 2 is filled with non-shrink mortar.

[0021]

As described above, according to the method of filling the non-shrink mortar into the lower part of the steel column base according to the present invention, a paper frame is used as the base frame of the steel column. The cost can be reduced, and the construction can be performed advantageously.

Further, a protruding portion is formed by bending a piece of paper integrally connected to a paper material constituting a main body of the base form,
Since this convex portion is used as a means for setting the interval between the form body and the base of the steel column to a predetermined size, it is possible to eliminate the necessity of separately using a jig for setting the interval. Therefore, the spacing between the edge of the steel column base and the formwork can be easily set to a predetermined spacing in terms of construction, and therefore, the quality of the filling work of the non-shrink mortar into the lower part of the base can be improved. We can go while securing.

[Brief description of the drawings]

FIG. 1 shows an embodiment and is a perspective view of a form setting state.

FIG. 2A is a cross-sectional side view of the same, and FIG.
2 is a sectional view taken along the line II of FIG.

FIG. 3 is a front view of a band-shaped paper material for forming a mold;

FIG. 4A is an exploded perspective view of the projection, and FIG. 4B is a perspective view of the projection.

5A and 5B show a conventional example, in which FIG. 1A is a side sectional view showing an installation state of a formwork, and FIG. 2B is II-II in FIG.
FIG. 3C is a side sectional view showing another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Steel pillar 2 ... Base 4 ... Foundation 5 ... Mold frame 5a ... Mold body 10 ... Spacing setting convex part 11 ... Paper piece part

Claims (2)

[Claims] 1. A formwork made of a paper material is used as a base formwork of a steel column, which is installed around the steel column base, and filled with non-shrink mortar from between the formwork and the steel column base. A method for filling a non-shrink mortar into a lower portion of a steel column base, characterized in that: 2. A paper piece integrally connected to a paper material forming a main body of the base form is bent to form a convex portion projecting inward from the form main body, and the convex is formed. 2. The non-shrinkable mortar to the lower part of the steel column base according to claim 1, wherein the distance between the form body and the base of the steel column is set to a predetermined size by abutting the edge of the base of the steel column. Filling method.