JP2513983B2 - Installation method of vertical shaft inner wall having vertical shaft facility and vertical shaft inner wall having vertical shaft facility - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with a cable for communication, power, etc. in a shaft installed underground, and a vertical shaft facility provided for branching pipes such as gas and water to the ground. The present invention relates to a method for installing a shaft inner wall and a shaft inner wall equipped with shaft equipment.

[0002]

2. Description of the Related Art When laying underground cables for communication, electric power, etc., and pipes for gas, water, etc., vertical shafts are constructed at predetermined points, and the vertical shafts are connected to each other by side shafts. Install cables and pipes to the side shaft. Therefore, it is necessary to provide a fixture for fixing cables and pipes to the pit and a floor for fixing the metal and for future inspection and maintenance.

Next, a concrete description will be given of a conventional construction method of installing equipment for laying cables and pipes in the vertical shaft.
First, when the vertical shaft is excavated to a predetermined depth, concrete is placed in the entire vertical shaft. FIG. 5 shows a situation in which a worker is assembling work equipment inside the concrete wall 50 thus cast.

Next, work for installing floor equipment, cable fixing hardware and the like is started while sequentially raising the scaffold 51 from the bottom of the shaft. FIG. 5 shows a situation in which the scaffold 51 is set up on the second-stage floor equipment 52b that has already been installed, and the floor equipment, cable fixing hardware, etc. are being installed while the anchor bolts are attached to the concrete wall 50. Shows.

[0005]

However, in such a conventional construction method, it is necessary to install floor equipment, cable fixing hardware, etc. while manually attaching the anchor bolts to the concrete wall 50 one step at a time in the vertical shaft while manually installing the anchor bolts. Therefore, there was a problem that a lot of time was required for the work. In addition, there is a problem in that it is necessary to ensure the safety of workers who are forced to work on the site for a long time, and it is necessary to secure a large number of workers for a long period of time, resulting in high cost. It was

The present invention has been proposed to solve the above-mentioned problems, and provides a method for installing an inner wall of a vertical shaft equipped with a vertical shaft facility for shortening the construction period, ensuring the safety of workers, and reducing the cost, and the vertical shaft equipment. The purpose is to provide the inner wall of the shaft.

[0007]

In order to achieve the above object, the present invention provides an outer shell earth retaining member together with shaft excavation,
Thereafter, a first shaft inner wall member having required equipment is installed on the bottom of the shaft, and then a second shaft inner wall member having required equipment is placed on the first shaft inner wall member. , The first shaft inner wall member and the second shaft inner wall member are connected to each other by connecting the joints, and the second shaft inner wall member is sequentially mounted and joined, and then mounted on the uppermost portion and provided with necessary equipment. A third shaft inner wall member for placing and joining is mounted on the second shaft inner wall member, and then a gap is filled between the outer shell earth retaining member and the shaft inner wall member outer wall with a filler. The method was to install the inner wall of the shaft equipped with internal equipment.

Further, the first shaft inner wall member having at least adjusting means for holding the shaft vertically to the shaft bottom, and the first shaft inner wall member are mounted and joined on the first shaft inner wall member and additionally provided in the shaft. A second shaft inner wall member provided with an object,
At least a third shaft inner wall member is formed so as to mount the lid and has a height matching the height to the ground surface and is mounted and joined on the second shaft inner wall member. The vertical wall was equipped with vertical shaft equipment.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. First, along with excavation of a vertical shaft, a steel pipe, which is an earth shell retaining member, is provided in the vertical shaft. This steel pipe is a unit cylinder having a predetermined height.The unit cylinders are sequentially inserted into the shaft from the ground surface, and the cylinders are welded or joined together by means of bolts to join the shaft bottom from the ground surface. Form a continuous cylinder up to a height of up to. After the steel pipe is provided in this way, base concrete is placed on the bottom of the shaft.

Next, various cylindrical tube units produced in advance in the factory are sequentially installed in the steel pipe 1 thus formed. In this case, various cylindrical tube units are transported from the factory to the site by a truck or the like, and suspended by the crane 17 in the steel pipe 1.
First, a first cylindrical tube unit is hung in the steel pipe 1, and this first cylindrical tube unit is already cast as shown in the sectional view of the entire tube shown in FIG. The adjusting base 3 is provided so that the adjusting base 3 can be installed while being horizontally adjusted with respect to the concrete 2. Therefore, after temporarily installing the first cylindrical unit 4,
The adjust base 3 is adjusted with respect to the base concrete 2 via the adjust bolts 5 to horizontally adjust the entire first cylindrical tube unit 4 and the steel pipe 1
After securing an appropriate clearance with the inner wall, fix it on the bottom of the shaft. It should be noted that a waste concrete 6 is placed below the base concrete 2.

After the first cylindrical tube unit 4 is installed and fixed, the second cylindrical tube unit 7 is hung and the connecting reinforcing member 4a formed on the upper surface of the first cylindrical tube unit 4 and the first The connecting reinforcing member 7a formed on the lower surface of the second cylindrical tube unit 7 is connected via the connecting bolt 8. On the other hand, similarly to the first cylindrical tube unit 4, the second cylindrical tube unit 7 has an upper portion of the second cylindrical tube unit 7 so that an appropriate clearance can be secured between the second cylindrical tube unit 7 and the inner wall of the steel tube 1. An attitude control hardware (not shown) is inserted into the attitude control holes 9 formed at equal intervals around the circumference. In this embodiment, the posture control holes 9 are formed at four locations on the peripheral side of the second cylindrical unit 7.

In this way, the work of stacking a plurality of second cylindrical tube units 7 is performed. afterwards,
By placing and fixing the third cylindrical tube unit 10 on the uppermost second cylindrical tube unit 7, the installation of the tubes that are connected and fixed in series is completed. This work can be carried out extremely easily and safely within a short period of time because various cylindrical tube units produced at the factory are simply hung in the steel pipe 1 by the crane 17 and fixed by joining.

Next, a filler such as mortar is injected between the steel pipe 1 and the cylindrical tube unit through a filler injection hole 11 formed in any of the cylindrical tube units located below. To stabilize. In this embodiment, the injection holes 11 are formed at four locations on the peripheral side of the second cylindrical tube unit 7. After the tube installation is completed in this way, the third cylindrical tube unit 1
When the lid 12 is placed on the upper part of 0, the laying work of the tube in which the cylindrical tube unit is formed in series is completed.

Next, various cylindrical units forming the tube will be described. First, as shown in FIG. 2, the first cylindrical tube unit 4 has at least a connecting reinforcing member 4a, an adjusting base 3, and a vertical cable supporting metal member 14 having a reinforcing member 13. Further, the second cylindrical tube unit 7 is provided with at least the connecting reinforcing members 7a and 7b, the vertical cable supporting metal member 14 having the reinforcing member 13, and the attitude control hole 9 and the filler injection hole 11. Has been formed. Similarly, the third cylindrical tube unit 10 is provided with the vertical cable supporting metal member 14 having the other reinforcing member 13 having at least the connecting reinforcing member 10a. And this third
The cylindrical tube unit 10 is designed to have an appropriate height in consideration of the height at which the third cylindrical tube unit 10 is installed depending on the depth of the vertical shaft.

In other words, the first cylindrical tube unit 4 and the second cylindrical tube unit 7 designed to have a predetermined height and manufactured in a factory can be used. It is necessary to separately design only the cylindrical tube unit 10 having a height corresponding to the site of the shaft and factory-manufacturing it. It should be noted that various cylindrical tube units may be provided with various attachments as required, such as the vertical cable supporting hardware 14, the step 15 and the floor equipment as shown in FIG. Needless to say, the attachments of these cylindrical tubes differ depending on whether the object installed in the ground is for communication, power, or water. For example, as shown in FIG. 3, each cylindrical tube unit needs to be provided with reinforcing members 16 extending in the height direction at equal intervals in order to prevent deformation of the cylindrical tube unit. In addition, as shown in FIG. 4A, a hole for communicating with the inside of the horizontal shaft is formed in the side portion of the first cylindrical tube unit 4, and the hole shown in FIG.
Be prepared to install the horizontal shaft connection hardware as shown in. With this configuration, a stable laid state can be realized when the cable is laid from the vertical shaft to the horizontal shaft.

[0016]

As described above, according to the present invention, a cylindrical tube unit having various kinds of vertical shaft facilities produced in a factory in advance is carried into a vertical shaft site, the cylindrical tube units are joined and fixed to each other, and a steel pipe and The tube can be laid safely and properly in a short period of time just by filling the clearance of mortar. Therefore, in a site where the inner diameter of the vertical shaft is common, it is possible to easily install the equipment inside the vertical shaft simply by installing the cylindrical tube unit, so that it is possible to save labor and reduce the total cost required for the construction. The present invention can be applied not only to the steel pipe vertical shaft construction method but also to the caisson construction method, the deep foundation construction method, and the like, and the vertical shaft is not limited to a circular cross section but can also be applied to a rectangular shape or the like.

[Brief description of drawings]

FIG. 1 is a perspective view of a tube and an internal accessory according to the present invention.

FIG. 2 is a sectional view of a tube according to the present invention.

FIG. 3 is a partial perspective view of the vicinity of a tube.

FIG. 4 is a partial cross-sectional view of a tube and a perspective view of an attached horizontal shaft connecting metal piece.

FIG. 5 is a perspective view showing a conventional method.

[Explanation of symbols]

 1 Steel pipe (outer shell earth retaining member) 14 Vertical cable support hardware 15 Step 17 Crane 18 Floor equipment

Front page continuation (72) Masami Iwasa 3-23-14 Takanawa, Minato-ku, Tokyo Within Japan Commsys Co., Ltd. (72) Inventor Kyobayashi Kuribayashi 1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone (72) Inventor Naomichi Sawada 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation (72) Minoru Nagashima 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nippon Telegraph and Telephone Corporation Within

Claims (2)

(57) [Claims] 1. An outer shell earth retaining member is provided along with shaft excavation, then a first shaft inner wall member having required equipment is installed at a shaft bottom, and then a second shaft inner wall having required equipment is provided. The member is placed on the first shaft inner wall member, and the first shaft inner wall member and the second shaft inner wall member are connected to each other to connect the second shaft inner wall member in sequence. After placing and joining, the third shaft inner wall member, which is placed on the uppermost part and is provided with necessary facilities, is placed and joined on the second shaft inner wall member, and then the outer shell earth retaining member and the shaft inner wall member. A method for installing an inner wall of a shaft, comprising a facility inside the shaft, which is characterized in that a gap is filled with a filler. 2. A first shaft inner wall member comprising adjusting means for holding at least horizontal to the shaft bottom,
A second shaft inner wall member that is mounted and joined on the first shaft inner wall member and that is provided with a shaft inner accessory, and is formed so as to mount at least a lid, and the height to the ground surface. A shaft inner wall provided with a shaft inner facility including a third shaft inner wall member mounted and joined on the second shaft inner wall member having a height adapted to.