JP2604048B2 - Concrete building wall structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a wall structure of a concrete building in which ducts, pipes, and the like are easily installed in a building of a nuclear power plant, for example.

(Prior Art) For example, in various plants such as a nuclear power plant, embedded hardware is used to support pipes, trays, ducts and the like.

The embedded hardware is embedded and arranged in advance in the building wall.

FIG. 3 shows a wall structure of a conventional concrete building in which such an embedded hardware is buried. That is,
The metal fitting includes, for example, a steel plate 1 of 25 cm square and stud bolts 2 fixed from the corners of the plate 1 by welding or the like. After the stud bolts 2 are temporarily fixed between the plurality of reinforcing bars 3, concrete 4 for constructing a concrete building is cast and fixed integrally to the concrete 4. The surface of the plate 1 is exposed on the concrete wall 5, on which a support 9 as shown in FIG. 4 is attached.

On the support 9 of the embedded metal plate 1, for example, a duct 6, a main pipe 7, a small-diameter pipe 8, and the like are individually installed as shown in FIG.

When such an embedded metal plate 1 is installed on a building wall 5, a stud bolt 2 is tied to the reinforcing bar 3 at a predetermined position by wire or the like after the reinforcing bar 3 is installed, or the plate 1 is previously drilled. A method of hitting a nail into a nail hole and fixing the plate 1 to a concrete formwork or the like is employed.

(Problems to be Solved by the Invention) However, in such a wall structure of a concrete building, if, for example, thousands of embedded hardware are arranged on the entire wall surface, there is no regularity, and they are scattered and cluttered. In addition, since the work pieces are manually installed one by one, there is a problem that not only the work efficiency but also the installation accuracy is reduced.

In addition, since the embedded metal is temporarily fixed to the reinforcing bar 3 with a nail, a wire, or the like, the set position is largely displaced by the pressure at the time of placing the concrete, and the plate 1 is moved to the concrete 4.
There is a problem that is buried inside.

In addition, despite the fact that the buried hardware must exert its supporting capacity after the concrete is cast, it must wait until the concrete is cured. For this reason, even if pipes etc. are brought into the building early, they should be temporarily placed on the floor, or when installing pipes with a high installation height, temporarily mount them on a separate stand from the floor. There is a need.

The present invention has been made to solve the above problems,
An object of the present invention is to provide a wall structure of a concrete building that reduces the number of embedded hardware, improves installation efficiency and accuracy, and shortens the construction period.

[Constitution of the Invention] (Means for Solving the Problems) The present invention relates to a steel frame, a strip-shaped embedded metal piece connected to the steel frame, and a concrete wall cast with concrete covering the back surface of the embedded metal piece. And a plurality of embedded metal objects are arranged at predetermined intervals along the wall surface.

(Operation) The strip-shaped embedded metal is cast into concrete with its surface exposed and embedded in the wall. A support for supporting a duct, a pipe, a tray, and the like is attached to the surface of the embedded hardware, and the duct, the pipe, the tray, and the like are installed. These supports have a maximum value of the distance between the support points due to the stress between the support points, the limitation of the deflection, and the limitation of the natural period of the entire system. Among the supports to be mounted on the wall, a support having a large number and a small distance between support points is selected, and the embedded metal is buried in the concrete wall at a certain interval at the distance.

With this embedded metal, ducts, pipes, trays and the like can be regularly installed at regular intervals.

Moreover, it can be installed over a wide range from one end to the other end of the wall at regular intervals, and the embedded metal can be used as a part of a concrete casting formwork.

(Embodiment) An embodiment of a wall structure of a concrete building according to the present invention will be described with reference to FIG. 1 and FIG.

In FIG. 1, reference numeral 10 denotes an elongated metal strip-shaped steel plate embedding hardware.
A rib plate 11 is connected to a back surface of the embedded hardware 10. The rib plate 11 is connected by bolts to a steel frame 12 serving as a framed column for constructing a concrete building. In this way, the embedded hardware 10 is fixed upright to the steel frame 12 via the rib plate 11. A wall 14 of a concrete building is constructed by setting up a formwork 14 with a slight gap 13 in front of the embedded hardware 10 and placing concrete 15 and removing the formwork 14 when the concrete 15 has hardened.

Then, as shown in FIG. 2, a plurality of embedded hardware 10 is, for example, 30 cm wide and 300 cm long,
They are arranged in a line in the vertical direction at a pitch of 200 cm, and the level of division with the adjacent lines is combined to form a wall structure.

Then, a support 9 for installing the duct 6, the main pipe 7, and the small-diameter pipe 8 is attached to the embedded hardware 10, and these are installed on the embedded hardware 10. By arranging the embedded hardware 10 in this manner, about 80% of the pipes and the like supported on the reactor building wall of the nuclear power plant can be supported by the embedded hardware 10, and the scattered hardware as in the conventional example can be supported. , The efficiency of the installation work is improved, and the accuracy is also improved.

In addition, the embedded hardware 10 can be used directly as a formwork for concrete casting, and can support piping and the like even before concrete casting, so that pipes and the like can be quickly brought in. Lead to a shorter construction period.

In the above-described embodiment, the size and the installation interval of the metal fittings are specified. However, it is needless to say that the metal fittings are efficiently selected according to the type of the plant or the pipes to be supported. It is needless to say that the arrangement of not only the upper and lower rows but also the left and right rows can be of course. In addition, not only a steel plate but also a strong ceramics plate, a reinforced plastic plate or the like can be used as the metal fitting.

[Effects of the Invention] According to the present invention, scattering of embedded hardware can be reduced, and the number of embedded hardware can be reduced. Therefore, when pipes and the like are installed in a building, work efficiency and accuracy are improved.

In addition, the embedded metal can be used not only as a formwork at the time of placing concrete, but also for quickly bringing in piping and the like, thereby contributing to shortening the construction period of a building.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a wall structure of a concrete building according to the present invention, FIG. 2 is a perspective view showing a state where ducts and pipes are attached to the wall structure in FIG. 1, and FIG. FIG. 4 is a perspective view showing a wall structure of a conventional concrete building, and FIG. 4 is a perspective view showing a state where ducts and pipes are attached to the wall structure of FIG. DESCRIPTION OF SYMBOLS 1 ... Plate, 2 ... Stud bolt 3 ... Reinforcing bar, 4 ... Concrete 5 ... Wall, 6 ... Duct 7 ... Main piping, 8 ... Small diameter piping 9 ... Support, 10 ... Embedded hardware 11 ... rib plate, 12 ... steel frame 13 ... gap, 14 ... formwork 15 ... concrete

Claims (1)

(57) [Claims] The present invention comprises a steel frame, a strip-shaped embedded metal piece connected to the steel frame, and a concrete wall cast with concrete covering a back surface of the embedded metal piece. A wall structure for a concrete building, comprising a plurality of rows arranged at predetermined intervals along a wall surface.