JP2761451B2 - How to connect precast concrete columns - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for connecting precast concrete columns.

[0002]

2. Description of the Related Art Conventionally, when a building is constructed with precast concrete members, a precast concrete column is erected on a foundation and prestressed, and then another precast concrete column is added on the column to preform. Was giving stress. When prestress is applied by adding precast concrete columns in this way, it is a general method to apply prestress each time.

[0003]

However, as described above, the method of adding precast concrete columns and adding prestress each time has a problem that not only the work becomes complicated but also the construction period becomes long. The present invention has been made in view of such a problem, and an object of the present invention is to perform a connecting operation easily and in a short period of time when a precast concrete column is added to apply a prestress.

[0004]

Means for achieving the above object are to provide a pretension pre-capacitor erected on a foundation.
Another precast concrete
Concrete pillars are sequentially added, and these are passed between the joint ends.
After connecting with the connecting steel rod inserted
Prestressing cast concrete columns
It is characterized by.

[0005]

[Function] Pretension precast concrete on foundation
Erection pillars on which prestress is applied.
Other precast concrete columns were added sequentially
Later, this precast concrete column is prestressed
The pre-stressed pre-stress
Easy and quick connection of cast concrete columns
be able to.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings . Figure 1 is a sectional view of the flop-les tension precast concrete column (hereinafter simply referred to as column) 1, formed on the possible length carried by land transport means, the beam-receiving jaws 2 are two setsubun projecting, axially Are pre-stressed by the tendon members 3 inserted into the four corners of. Further, as the tension member 3, a PC steel rod or a PC steel stranded wire is used.

Further, a concave notch 4 is formed at the center of each of the four surfaces at both ends, and an insertion hole 5 extends from the concave notch 4 to the lower end surface. As described above, the pillar 1 is manufactured in advance in a factory and transported to the site for use.

[0008] below, when explaining a method of connecting the columns, first, as shown in FIG. 3, from top to build a foundation 7 connecting steel bar 6 is projected, the base block 8 on the basis 7
And the column 1 is erected by applying an adhesive on the pedestal block 8 . Its to the pillar 1 to fix the connecting steel bar 6 inserted in the insertion hole 5 of the column 1 by tightening a nut 6a.

Next, as shown in FIG. 4, another pillar 1a is added to the upright pillar 1, and a connecting steel rod 9 is inserted into the insertion hole 5 of the pillar 1, 1a, and a nut is inserted. These columns 1, 1a are integrally connected by tightening at 9a.
By repeating such operations sequentially, a pillar having a predetermined height can be constructed, and a building is constructed by connecting the pillars and extending a beam.

FIG. 5 shows a column 1 in which a foundation 7 is formed on a column base in advance, and the column 1 is also erected by the same method as described above.

[0011] FIG. 6 is a sectional view of the flop-les-cast concrete column (hereinafter simply referred to as pillars) 1b, is formed into a transportable lengths by transport means of the first invention as well as land-based, for receiving the beam chin 2 that has been two Setsubun projecting. This pillar 1
Through holes 11 through which the tendon 3 is inserted extend from the upper end surface to the lower end surface at the four corners of b, but no prestress is applied.

A recess 4 is formed at the center of each of the four faces at both ends, and an insertion hole 5 extends from the recess 4 to the lower end face . Pillar 1b of this be made in advance at the factory in the same manner as described above is intended to be used to transport to the site.

[0013] Referring to the pillars of the connection method will be described below, this is also the base block 8 of the base 7 under the same like manner
The pillar 1 is erected on the upper side via an adhesive. And the pillar 1
Projecting from the upper surface of the foundation 7 into the insertion hole 5 at the joint end of
The connecting steel bar 6 thus inserted is inserted and the nut 6a is tightened (see FIG. 8).

[0014] Then, in the erected pillars 1, topped stomach pillar 1 b such have pre-stress is applied, these pillars
To insert the connecting steel bar 9 into the insertion hole 5 at the joint end portion of the 1, 1b. And nuts are attached to the upper and lower ends of the steel bar 9 for connection.
9a and these pillars 1 and 1b are integrally connected.
You. Prior to this, the through hole 11 of the pillar 1b is provided.
The tension member 3 is inserted in advance and the nut is screwed to the upper end.
It is in a suspended state.

[0015] Thereafter, by nervous by jack from the upper end of the tension member 3 of the pillar 1b to impart pre-stress, pillars 1,1b prestressing is applied integrally is Ru is formed. Its to, Ri by the <br/> sequentially repeating such an operation, it is possible to build a pillar of Jo Tokoro of height, to build a building pass over the beams along with the connection of this pillar.

[0016]

[0017]

According to the present invention, another precast concrete column to which no prestress is applied is sequentially added on a pretensioned precast concrete column erected on the foundation, and these are connected for connection inserted between the joining ends. after connecting steel bars, by applying a prestress to the other flop les cast concrete columns, it is possible to connect precast concrete pillars to impart pre-stress in the field easily and quickly.

[Brief description of the drawings]

FIG. 1 is a sectional view of a pretensioned precast concrete column.

FIG. 2 is a sectional view taken along line aa of FIG.

FIG. 3 is a sectional view of a state in which a pretensioned precast concrete column is erected on a foundation.

FIG. 4 is a sectional view in which another pretensioned precast concrete column is connected to a pretensioned precast concrete column.

FIG. 5 is a sectional view of a pretensioned precast concrete column on which a foundation is formed.

FIG. 6 is a sectional view of a precast concrete column to which no prestress is applied.

FIG. 7 is a sectional view taken along line bb of FIG. 6;

FIG. 8 is a cross-sectional view of a state in which a pretensioned precast concrete column is erected on a foundation.

FIG. 9 is a cross-sectional view in which a precast concrete column is connected to a pretensioned precast concrete column.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1a Pretension precast concrete column 1b Precast concrete column 2 Jaw 3 Tensile material 4 Concave notch 5 Insertion hole 6 Steel bar for connection 7 Foundation 8 Base block 9 Steel bar for connection 11 Through hole

Claims (1)

(57) [Claims] Claims: 1. A pretensioning printer standing on a foundation
Another pre-cast on cast concrete columns
Concrete pillars are sequentially added and these are joined between the joint ends.
After connecting with the connecting steel rod inserted across,
Prestressing recast concrete columns
How to connect precast concrete columns characterized by
Law.