JPS5929887A - Method of treating through-sleeve at every small amount - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for treating the edge of a through-sleeve conveniently used in equipment piping for air supply or water supply and drainage.

For example, due to the lack of space for all of the equipment piping to pass through, there are cases where through holes are provided in the beams of structures using sleeves to create perforated beams.

However, when a steel plate or the like is used as a small block, as is conventionally done, there is a problem that the concrete IJl cast through the gap flows into the sleeve during construction due to construction errors. Therefore, after concrete is poured, it is necessary to repair the concrete inside the sleeve (σ1), the sleeve rotation, etc., which causes a lot of waste in construction.

In other words, conventionally, in such a through-sleeve for equipment piping, construction of the sleeve turn p has been carried out by the following process.

■ Cutting of copper pipe sleeve ■ Reinforcement ■ Closing the gap with the formwork ■ Erection of the formwork ■ Adjustment of the gap with the formwork ■ Repairing defective concrete around the sleeve of 6 frυ concrete in the sleeve Therefore, the edge treatment of the penetrating sleeve of this invention This method uses a lid made of an elastic material such as styrofoam to absorb gaps caused by construction errors, thereby reducing the need for rework when turning the sleeve, thereby streamlining construction.

Hereinafter, the present invention will be explained based on the illustrated embodiment.

Fig. 1 shows the construction of a steel-framed reinforced concrete girder, and l in the figure is a steel beam made of H-section steel, and the web is preliminarily provided with 20 through-holes for steel pipe sleeves.

The ends of the sleeve 2 are then closed with lids 3 made of an elastic material that can be easily shaped, such as styrofoam, and the formwork 4 is removed by pushing the lids 3 into the sleeve 2. It is attached. Note that the distance between the formwork 4 and the edge of the sleeve 2 is at least Q*m and at most about 20 or more.

In the latter case, that is, in the case corresponding to the left edge in FIG. 1, the end of the sleeve 2 can be prevented from protruding onto the beam surface.

FIG. 2 shows how the opening is closed with a lid 3 made of styrofoam, and by providing a taper on the insertion side of the lid 3, removing and attaching the lid is facilitated.

In construction, first, the erection of the steel is completed, and then the necessary reinforcement work etc. around the sleeve 2 is performed.

Next, the lid 3 is attached to the opening of the sleeve 2 by pushing it in slightly to close the opening. Subsequently, the formwork 4 is erected so as to be in contact with the back surface of the lid 3, and the formwork 4 is tightened. At this time, by tightening the formwork 4, the lid 3 is automatically pushed into the sleeve 2, and at the same time, the IA of the penetration amount is
Adjustments will also be made. In this state, the concrete 5 is placed, and therefore there is almost no need to modify the sleeve turning.

This invention has the above-mentioned configuration, and since the gap between the sleeve and the formwork is completely closed, leakage of concrete can be prevented, and concrete (fr, D) after concrete pouring can be prevented.
, no repair is required. Furthermore, since the lid, formwork, and sleeve can be easily prepared, the overall construction can be greatly simplified and speeded up.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view showing an embodiment of the present invention, and FIG. 2 is a longitudinal cross-sectional view showing how the mouth portion is closed. 1... Steel beam, 2... Sleeve, 3.
...Lid, 4...Formwork, ""・"'Concrete.

Claims (1)

[Claims] (i) The small openings at both ends of the sleeve installed at a predetermined position are closed with lids made of an elastic body having the same diameter as the small openings or a slightly larger diameter, and the formwork is placed in contact with the 84 sides of the lids. By attaching the bolts and tightening the formwork completely,
A method for processing the edges of a penetrating sleeve, characterized by penetrating all eight lids into the sleeve by a predetermined amount and pouring concrete into a formwork in that state. (2) The method for processing the edge of a penetrating sleeve according to claim 1, wherein the elastic body is styrofoam.