JPH0972044A - Filled coated steel tube concrete tower structure - Google Patents

Abstract

(57) [PROBLEMS] To provide a filling-covered steel pipe concrete tower-like structure in which labor saving of rebar assembly is achieved, the process is shortened, and structurally excellent in earthquake resistance. SOLUTION: A filling type steel pipe 1 which is built in a foundation part and which is adjacent in the lateral direction and which is filled with high-strength, high-fluidity concrete 2.
The deformed rebars 3 for horizontal connection were inserted over the space, and the filling type steel pipe and the deformed rebars were covered with the coated concrete 5 in which the rebars 4 were arranged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filling-covered steel pipe concrete tower-like structure applied to tower-like structures such as bridge piers and chimneys.

[0002]

2. Description of the Related Art The conventional structure of a bridge pier is mainly composed of a reinforced concrete structure in which main bars having a diameter of 32 mm or 51 mm are spaced at 150 mm intervals and are double-reinforced.
Up to 25 mm band reinforcing bars are arranged at 150 mm intervals. Some of the bridge piers have an SRC structure in which H steel is converted into the cross section of the reinforcing bar and combined with the reinforcing bar, but also in this case, the stirrup is required.

[0003]

In the above-mentioned conventional structure, since the large-diameter main bars are arranged in double at 150 mm intervals, it takes a lot of time to construct the joint, and if the intervals between the main bars are narrow, the concrete structure becomes smaller. It takes a lot of time and effort to construct. Further, a stirrup is required, and it takes a lot of time to assemble the stirrup.

Further, the construction of the bridge piers requires a lot of time in the process, and particularly the rebar assembling work requires a lot of time and labor in the process. The present invention has been proposed in view of the above problems of the prior art, and the purpose thereof is to reduce the labor of the rebar assembly, shorten the process, and structurally have excellent earthquake resistance. The point is to provide a filled and coated steel pipe concrete tower structure.

[0005]

[Means for Solving the Problems] In order to achieve the above-mentioned object, a filling-covered steel pipe concrete tower-like structure according to the present invention is built in a foundation portion and filled with high-strength, high-fluidity concrete. Of the filling type steel pipes, insert deformed bars across the filling type steel pipes that are adjacent in the lateral direction, connect the filling type steel pipes by firmly constraining them with high strength and high fluidity concrete in each filling type steel pipe, The deformed bar and the filled steel pipe joined via the deformed bar are covered with a reinforced concrete structure.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show a preferred embodiment of the present invention, in which a steel pipe 1 is built up from a foundation at each required position, and high strength and high fluidity concrete 2 is filled in the steel pipe 1. By inserting the deformed bar 3 into the steel pipe 1 filled with the concrete for the lateral connection, the deformed bar 3 is constrained by the high-strength and high-fluidity concrete 2 in the steel pipe 1 to The steel pipe 1 is spliced laterally.

Then, after reinforcing bars 4 are arranged around the group of steel pipes 1, a form 6 surrounding the group of steel pipes 1 and the reinforcing bars 4 joined by the deformed reinforcing bars 3 is assembled and a coated concrete 5 is poured.

[0008]

As described above, the filling-covered steel pipe concrete tower-like structure according to the present invention is such that the steel pipes built in the foundation are filled with high-strength, high-fluidity concrete, and the horizontal connection of each steel pipe is It is performed by inserting deformed rebars in steel pipes that are adjacent to each other in the lateral direction and firmly constraining it with high-strength, high-fluidity concrete in the steel pipes, so welding is completely unnecessary and workability is significantly improved. .

Since the steel pipe is filled with high-strength, high-fluidity concrete, ultimate strength and toughness are ensured,
The function of replacing the reinforcing bar is exhibited, and the work of arranging the reinforcing bar, which is time-consuming, can be saved. Further, as described above, the high-strength, high-fluidity concrete-filled steel pipe joined through the deformed reinforcing bar is covered with the reinforced concrete structure to ensure horizontal rigidity, improve vibration characteristics, and ensure safety during earthquakes. Is secured. In addition, the concrete-filled steel pipe group reduces the amount of reinforcing steel, and saves labor such as reinforcement and work.

[Brief description of drawings]

FIG. 1 is a plan cross-sectional view showing an embodiment of a filled and coated steel pipe concrete tower-like structure according to the present invention.

FIG. 2 is an arrow view of FIG.

FIG. 3 is a perspective view showing a joint portion of a corner portion of a filled steel pipe by a deformed reinforcing bar.

FIG. 4 is a perspective view showing a joint portion of a general portion of a filled steel pipe by a deformed reinforcing bar.

[Explanation of symbols]

 1 Steel pipe 2 High-strength, high-fluidity concrete 3 Deformed bar 4 Rebar 5 Coated concrete

Claims (1)

[Claims] 1. Among the filled steel pipes which are built in a foundation and filled with high-strength, high-fluidity concrete, deformed rebars are inserted across the adjacent filled steel pipes in the horizontal direction, High-strength in the pipe, connecting each of the filled steel pipes tightly restrained by high-fluidity concrete, the deformed rebar and the filled steel pipe joined via the deformed rebar is covered with a reinforced concrete structure. Characteristic of the filled and coated steel pipe concrete tower structure.