JPH067118Y2 - Steel shell buried - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a steel shell submerged box made of steel shell and reinforced concrete.

(Prior Art) Referring to FIG. 4, a conventional steel shell submerged box is explained. (A) and (a) are upper and lower concrete floor boards, (b) is both concrete side walls, and (c) is the same concrete floor boards ( a) and the steel shells on the concrete side walls (b) on both sides, (d) the reinforcing bars of the upper and lower concrete floor plates (a), and (d ₁ ) the L-shape formed at the end of each reinforcing bar (d). The bent part (anchor part of the reinforcing bar (d)), (e) the reinforcing bar penetrating part (rebar penetrating hole) provided in the inner steel shell (c) of the concrete side wall (b), and (f) the steel shell submerged box. At the corner, at the corner (f) of the steel shell submerged box, the L-shaped bent portion (d) formed at the end of the reinforcing bar (d)
₁ ) through the rebar penetration part (e) provided in the inner steel shell (c) of the concrete side wall (b), and the L-shaped bent part (d ₁ ) on the inner surface of the outer steel shell (c).
It is designed to be fixed by supporting pressure.

(Problems to be solved by the invention) In the corner portion (f) of the steel shell submerged box shown in Fig. 4, the reinforcing bar (d)
L-shaped bent part (d ₁ ) formed at the end of the concrete side wall
It is fixed by the bearing pressure of the L-shaped bent part (d ₁ ) on the inner surface of the outer steel shell (c) through the reinforcing bar penetration part (e) provided in the inner steel shell (c) of (b). It is very troublesome to pass the L-shaped bent part (d ₁ ) formed at the end of the rebar (d) through the rebar penetration part (e) of the steel shell (c), and it takes a lot of time. Therefore, there was a problem that the construction efficiency of the steel shell burial box was poor.

The present invention is proposed in view of the above problems, and an object of the present invention is to provide a steel shell sunk box that can improve the construction efficiency.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a steel shell sunk box made of steel shell and reinforced concrete, in which the reinforcing bars of the upper and lower concrete floor plates are connected to the upper edge portions of the inner and outer steel shells of the concrete side wall. Through a plurality of U-shaped through-holes provided in and the plurality of through-holes provided in the lower part of the inner and outer steel shells,
An anchor nut is screwed onto the male screw provided at the protruding outer end of the reinforcing bar to fix the outer end of the reinforcing bar to the outer steel shell of the concrete side wall.

(Operation) The steel shell sunk box of the present invention is configured as described above, and in fixing the outer end portions of the reinforcing bars of the upper and lower concrete floor plates to the outer steel shell of the concrete side wall, as described above, Reinforcing rods are projected out of the outer steel shell through a plurality of U-shaped through holes provided at the upper edges of the inner and outer steel shells of the concrete side wall and through a plurality of through holes provided at the bottom of the inner and outer steel shells. Anchor nut is screwed onto the male screw provided on the outer end of the reinforcing bar.

(Embodiment) Next, the steel shell submersion box of the present invention will be explained with reference to one embodiment shown in FIGS. 1, 2 and 3. (1) is a long and entirely linear reinforcing bar, and the same reinforcing bar (1) A male screw is engraved on the outer end of the. Also, (2a) and (2a) are upper and lower concrete floorboards having the above-mentioned reinforcing bars (1), (2b) are concrete sidewalls on both sides, and (3) is each concrete floorboard (2a) and each concrete sidewall (2b).
Steel shell, (4) anchor nut, (5) seat plate, (6) a plurality of U-shaped through holes provided in the upper edge of the inner and outer steel shell (3) of the concrete side wall (2b), (7) is a plurality of through holes provided in the lower portion of the inner and outer steel shells (3) of the concrete side wall (2b).

Next, the construction procedure of the steel shell submerged box shown in FIGS. 1, 2, and 3 will be specifically described. When fixing the rebar (1) to the steel shell (3) outside the concrete side wall (2b), the long and generally straight rebar (1) is fixed to the inner and outer steel shell (3) of the concrete side wall (2b).
Through the through holes (6) and (7) provided in the outer end (male screw part) of the concrete side wall (2b), the outer steel shell (3) is projected, and the seat plate (5) is fitted to the outer end. The anchor nuts (4) are screwed together and the outer ends of the reinforcing bars (1) of the concrete floorboards (2a) (2a) are attached to the outer steel shell (3) of the concrete side wall (2b) by the anchor nuts (4). Settles in.

(Effect of the Invention) As described above, the steel shell sunk box of the present invention fixes the outer ends of the reinforcing bars of the upper and lower concrete floor plates to the outer steel shell of the concrete side wall as described above. The U-shaped through holes provided in the upper edges of the inner and outer steel shells of the side wall and the plurality of through holes provided in the lower part of the inner and outer steel shells are projected to the outside of the outer steel shell, and the projecting rebar outer ends Since the anchor nut is screwed into the male screw provided in the section, it is troublesome to pass the L-shaped bent portion formed at the end of the long rebar into the rebar penetrating portion of the steel shell as in the conventional steel shell submerged box. There is an effect that the work can be made unnecessary and the work efficiency of the steel shell burial box can be improved.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing an embodiment of a steel shell sunk box according to the present invention, FIG. 2 is a vertical sectional front view taken along the line II--II in FIG. 1, and FIG. FIG. 4 is a perspective view showing the fixing portion, and FIG. 4 is a vertical sectional side view showing a conventional steel shell burial box. (1) …… Reinforcing bar, (2a) …… Concrete floorboard, (2b) …… Concrete side wall, (3) …… Steel shell, (4) …… Anchor nut.

Claims (1)

[Scope of utility model registration request] 1. A steel shell burial box comprising a steel shell and reinforced concrete, wherein a plurality of U-shaped through holes and inner and outer steel shells in which steel bars of upper and lower concrete floor plates are provided at upper edges of inner and outer steel shells of concrete side walls. The outer steel shell of the concrete side wall by protruding the outside of the outer steel shell through a plurality of through holes provided in the lower part of the A steel shell submerged box characterized by being established in.