JPH0546561Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Field of industrial application] The invention is a construction method in which a beam is spanned in a bridge-like manner between the tops of the column heads of columns erected on a foundation to form a frame. The present invention relates to the structure of a column when the column is adopted, and particularly relates to an improvement in the structure when the column is formed from a prefabricated main body and the column base is fixed to a foundation.

[Conventional technology]

In the construction method for buildings, the height of the columns erected on the foundation is up to the bottom of the beam, a foundation supporting the beam is placed on the column head, and the end of the beam is built like a bridge on top of this foundation. It began to be used to form structures by folding them over each other. This construction method is similar to building a bridge over a support, so it is called the "bridge construction method."
It is called.

To explain this construction method using Figure 2, first,
A reinforced concrete column 1 is constructed on a foundation 2 by a conventional reinforced concrete construction method. The beam 3 is a prefabricated member such as a steel frame structure or a precast concrete structure, and after the column 1 is completed, the end of the beam 3 is directly spanned over the top of the column 1 to form a frame.

In this construction method, beam 3 is prefabricated,
Frame construction method in which the top of the column is at the same height as the top surface of the beam and connected to the side of the column to erect a steel beam, and reinforced concrete construction method in which the steel beam is made of reinforced concrete and the column is poured with concrete at the same time as the beam. In comparison, it has the advantage of simplifying construction and shortening the construction period.

[Problem that the invention attempts to solve]

However, the conventional "Bridge construction method" requires a considerable amount of labor and construction time to construct the pillars.
The advantage of the bridge construction method, which is to simplify the construction and shorten the construction period by prefabricating the beams, was diminished.

This invention was devised to improve the above-mentioned defects and make better use of the advantages of the bridge construction method, and provides a precast concrete (hereinafter referred to as "PC") column structure that can be adopted in the bridge construction method. The purpose is to

[Means to solve the problem]

This invention adopted to achieve the above purpose.
To explain the structure of a PC column, the column body consists of an outer shell made of a steel pipe, a prestressed concrete column body with tension steel inserted through it, and anchor plates installed at both the upper and lower ends of the steel pipe. The upper end of the tension steel material is fixed to the fixing plate of the column head of the main body, and a base for supporting the beam is welded onto the fixing plate. A base plate fixed to the top is welded to the base plate, and the lower end of the tension steel member passes through the fixing plate of the column base and the base plate and is fixed to the lower surface of the base plate.

[Effect]

By adopting the above-mentioned configuration, the main body of the pillar in the bridge construction method is made into a PC, which simplifies construction and shortens the construction period.

〔Example〕

The present invention will be explained in detail based on an embodiment shown in the drawings. In Figure 1, 10 indicates the main body of the column of the present invention, 2 is the lower foundation, 3 is the beam on the upper floor, and 4 is the main body of the column of the present invention.
is the upper floor. The column body 10 has a hollow column 14 inside with a steel pipe 13 as an outer shell, and is formed into a cylinder by disposing unbonded tension steel material 15.
Fixing plates 16, 16 are provided at both upper and lower ends of the steel pipe 13. A base plate 22 is welded to the fixing plate 16 at the lower end of the column base 12.
The lower end of the fixing plate 5 passes through the fixing plate 16 and the base plate 22 and is fixed to the lower surface of the base plate 22. The base plate 22 is a high base in the embodiment, and the base plate 22 is a base 2
Anchor member 2 is attached to the top surface of the anchor member 2 by a known structure.
It is fixed via 1. Fixing plate 16 of column head 11
A base 31 for supporting the beam 3 is welded to the base 31, and the ends of the beam 3 are connected to the base 31.

Manufacture of column body 10 and column body 1 according to the present invention
The construction method using 0 will be explained. First, the main body 10 is formed by dividing a steel pipe 13 of a predetermined diameter into two semicircular formworks, and fixing plates 16, 16 are fixed to each end of the steel pipe 13, which also serves as the formwork for the end face, and the column capital 1
An unbonded tension steel material 15 is inserted into the fixing plate 16 on the first side and fixed. Next, one formwork is filled with concrete corresponding to the size of the column 14, and then both parts of the formwork are closed and formed using centrifugal force in accordance with the method for manufacturing hollow concrete piles. When the concrete of the column 14 of the column main body 10 cast in this manner is cured in an autoclave, a column made of PC with a steel pipe coating is completed.

Next, the base plate 31 and the base plate 22 are welded to the outside of the fixing plate 16 on the end faces of the column head 11 and column base 12 of the column main body 10 thus formed, respectively. Here, the fixing plate 1 of the leg part of the column main body 10 is
6. Tension steel material 15 inserted through base plate 22
tension and introduce prestress into the column 14,
The lower end of the tension steel member 15 is fixedly fixed to the lower surface of the base plate 22. Next, base plate 2
2 is fixed to the upper surface of the foundation 2 via an anchor member 21, and the column is erected on the foundation 2. Then, by constructing a beam 3 between a column and an adjacent column, the frame for this floor is completed, and the floor 4 for the upper floor and the columns for the upper floor can be erected.

In this embodiment, since the various members are connected by welding, there will be no structural problem in the construction of the frame, although prefabricated members are used.

[Effect of idea]

As mentioned above, the present invention is a precast concrete column for forming a frame by spanning a beam between the tops of the column heads of columns erected on a foundation, and the column body is It consists of an outer shell made of a steel pipe, a column made of prestressed concrete with tension steel inserted through it, and fixing plates installed at both the upper and lower ends of the steel pipe. The upper end of the steel material is fixed, and a base that supports the beam is welded to the anchor plate, and a base plate that is fixed to the foundation is welded to the anchor plate of the base of the column body. , the lower end of the tension steel member is fixed to the lower surface of the base plate by passing through the fixing plate of the column base and the base plate, so that the column in the bridge construction method is
By converting to PC, it is possible to shorten the construction period,
In this way, the conventional bridge construction method can be significantly improved.

The column body is made of steel pipes and prestressed concrete, and the column body and the base supporting the beam are welded together, and the column body and base plate are welded together.
Even though it is a PC column, it has sufficient strength.

Since the lower end of the tension steel member is fixed to the lower surface of the base plate, the column body and the base plate are firmly connected.

[Brief explanation of drawings]

Figure 1 shows the structure of the precast concrete column of the present invention and an overall elevation view of the frame frame.
The figure is a schematic elevation view illustrating the prior art. 1...Reinforced concrete column, 2...Foundation, 3...
...Beam on the upper floor, 4...Floor on the upper floor, 10...Column body,
11... Column head of the column body, 12... Column base of the column body,
13...Steel pipe, 14...Column, 15...Tension steel material, 16...Fixing plate, 21...Anchor member, 2
2... Base plate, 31... Beam base.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A precast concrete column for forming a frame by spanning the tops of the column heads of columns erected on a foundation in the form of a bridge, which includes the column body. has an outer shell made of steel pipes, a column made of prestressed concrete with tension steel inserted through it,
It consists of fixing plates provided at both the upper and lower ends of the steel pipe, the upper end of the tension steel material is fixed to the fixing plate at the head of the column body, and a base supporting the beam is welded onto the fixing plate. At the same time, a base plate to be fixed on the foundation is welded to the fixing plate of the column base of the column body, and the lower end of the tension steel is inserted through the fixing plate of the column base and the base plate, and is attached to the bottom surface of the base plate. A precast concrete column structure characterized by being fixed to a section. (2) Request for registration of a utility model, characterized in that the precast concrete column is hollow using centrifugal force as an outer formwork of steel pipes, and is constructed of prestressed concrete using unbonded tension steel. The structure of the precast concrete column described in item 1 of the scope.