JPH07166718A - Column exchanging method and hole blocking device - Google Patents

Abstract

PURPOSE:To ensure high security on a platform and shorten working time by placing a removable cover on a working hole provided on the platform at a station, removing the cover to build up a steel-frame column and breaking the existing column thereafter. CONSTITUTION:A working is made by cutting off the vicinity of an existing column 5' on a platform 2' by a proper length and frames 4, 5 are fitted along the hole edge in an unfittable manner, so that a cover 10 can be placed in the frames 4, 5 in a displaceable manner. The cover 10 is removed, a concrete foundation 11 is formed below the platform 2' through the working hole and a steel frame 12 is build up on the foundation 11 to form a new column. The existing column 5' is broken thereafter. A hole blocking device used in this technique has longitudinal frames 4, 4 and lateral frames 5, provided with lower horizontal portions 41, 41 and 51, vertical portions 42, 42 and 52 and upper horizontal portions 43, 43 and 53, respectively, alternately, connected together and the cover 10 placed on the horizontal portions 43, 53 of the respective frames 4, 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of replacing a pillar of a building and an apparatus used for the method.

[0002]

2. Description of the Related Art First, a conventional pillar replacement method will be described with reference to the drawings. As shown in FIGS. 1 and 2, a platform 1'for supporting a roof (not shown) is used.
Wooden columns 5'are provided via a concrete stand 6 '. In addition, 7'is a line. When replacing the wooden pillar 5'as described above with a steel frame, as shown in FIG. 3, first, the asphalt portion 2'of the platform 1'in the vicinity of the pillar 5'is appropriately cut with a cutter. It is cut into a hole 8 ', and a worker enters through this hole 8'and removes the soil in the embankment 3'.

After removing the soil to some extent, the piles 9'are driven in from the four corners of the hole 8'as shown in FIG. 4, and the lids 10 'can be placed on the tops of the piles 9'at the four corners. . When passengers gather on the platform, the lid 10 'is stopped to stop the work, the passengers are safe, and when the train departs and there are no passengers, the lid 10' is removed, and the work is continued. When a hole of a size is made, pour in stone, cement, etc. into the hole to form a concrete foundation 11 'as shown in Fig. 5, and vertically install a steel frame 12' and demolish the existing pillar 5 ', and the work is completed. To do. However, in the conventional method as described above, there are various problems such as the time required for driving the pile 9'and the sense of instability of the lid 10 'due to the imbalance of the height of the pile 9'.

[0004]

Conventionally, a wooden pillar is provided on a platform of a station and a stop is provided on the pillar to protect passengers from rain and the like. However, in order to improve the platform, this wooden pillar is used. Various problems have occurred when replacing the columns with steel columns. That is, in the case of a wooden pillar, it is provided directly on the platform, but in the case of a steel frame,
Since it is necessary to form a concrete foundation in the ground and to raise a steel frame column from the foundation, in order to replace wooden with steel frame, a work notch is provided on the platform, and this notch is used. I had to use the holes in the section to dug up the soil under the platform to do the work.

This work cannot be performed when there are passengers on the platform, and when the passengers are present, in order to ensure the safety of the passengers, this hole is temporarily closed to stop the work, and the passengers are either left or reduced. I had to repeat the process of waiting and working again, but this tended to be time-consuming and therefore expensive. The present invention overcomes the above-mentioned conventional drawbacks, and by the present invention, the work of closing the hole is facilitated, and accordingly, the column replacement time is shortened and the cost is reduced.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 6 and subsequent figures relate to the method of the present invention and the apparatus used in the present invention. FIG. 6 shows a square frame F, which is fitted to the edge of a hole formed by cutting out a part of the platform in the vicinity of an existing wooden column. The frame pair F includes a pair of left and right vertical frames 4 and 4 and a pair of horizontal frames 5 and 5. The vertical frames 4 and 4 include the lower horizontal portion 41, the vertical portion 42, and the upper horizontal portion 4.
The horizontal frames 5 and 5 are also composed of a lower horizontal portion 51, a vertical portion 52, and an upper horizontal portion 53. Then, the lower horizontal portions 43 of the vertical frames 4 and 4 and the lower horizontal portions 53 of the horizontal frames 5 and 5 are aligned so as to be flush with each other and are formed in a square shape. At this time, projecting the tongue pieces from both lower horizontal parts, vertical parts, or upper horizontal parts, fixing the tongue parts with bolts, etc. You may form in a shape. In addition, the vertical part 4
2, 52 and the lower horizontal portions 41, 51 may be partially provided as shown in FIG. FIG. 8A shows vertical frames 4, 4 and horizontal frames 5, 5.
The lid 10 placed on the pair of frame-shaped frames F formed by
In this case, several lids 10 are put together to close the entire square character. Further, a recess 11 is provided at an appropriate position of the lid 10 and a handle 12 is provided therein to facilitate the removal from the frame pair F. The lid 1 is shown in FIG.
-One piece, like a bearing. Further, as shown in FIG. 8C, the lid 10 may be formed by the upper and lower plates on the pair of vertical members 102, 102 made of wood, but may be integrally made of aluminum instead of wood. .

Next, a method of replacing the pillar will be described. First, the platform in the vicinity of the existing pillar of the platform is cut out as in the conventional case, but the frame F shown in FIG. 6 is fitted. In this case, the vertical frame 4 and the horizontal frame 5 may be fixed by the above-mentioned means. With the holes assembled in the frame F as described above, the worker digs up the soil under the platform from the holes.
If passengers start entering the platform, lid 10
To close the hole and improve passenger safety. By repeating this, as shown in FIG. 9, the concrete foundation 11 is formed in the ground, the steel frame 12 is erected on it, a new pillar is formed, and the existing old pillar 5'is demolished, and the work is completed.

[0008]

According to the present invention, it is not necessary to hit a pile as in the prior art, thereby shortening the working time and mounting the lid on the lower horizontal portion of the frame so that the pile is mounted on the upper end of the conventional pile. It is more stable than placing it and there is no problem with passenger safety, and it is extremely easy to close the hole.

[Brief description of drawings]

FIG. 1 is a perspective view of a platform.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view of a conventional platform having a hole 8'formed therein.

FIG. 4 is a sectional view taken along line BB of FIG.

FIG. 5 is a cross-sectional view of a column 12 'standing on a platform.

6 is a perspective view of a frame F. FIG.

FIG. 7 is a diagram showing another example of the frame F.

FIG. 8 is a perspective view of one lid 10 of several lids 10 and a BB cross-sectional view of the several lids 10.

FIG. 9 is a sectional view of a platform on which a concrete foundation 11 and a steel frame 12 are formed.

[Explanation of symbols]

 F frame 4 vertical frame 5 horizontal frame 10 lid 41,51 lower horizontal part 42,52 vertical part 43,53 upper horizontal part

Claims (2)

[Claims] 1. A part of the platform is cut out,
It is used as a working hole, and then a frame is detachably fitted along the edge of the hole so that a lid can be removably placed on the frame, and the lid is removed to remove the platform from the working hole. A method in which a concrete foundation is formed below, a steel frame is erected on the foundation, then the existing columns are demolished, and the existing columns are replaced with steel frames. 2. A method for replacing a pillar, the apparatus comprising a frame and a lid, the frame comprising a vertical frame and a horizontal frame, and the vertical frame and the horizontal frame being perpendicular to a lower horizontal part. A hole closing device having a vertical section and an upper horizontal section, and having a rectangular cross-sectional shape, the vertical frames and the horizontal frames are alternately connected, and a lid is detachably placed on the horizontal sections of the vertical and horizontal frames.