JP2936365B2 - Underground structure frame construction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing an underground structural skeleton of a building, which is similar to a reverse striking method.

[0002]

2. Description of the Related Art Conventionally, underground construction work for building an underground structure of a building, in particular, a skeleton is generally performed by constructing a retaining wall, excavating the ground inside the retaining wall, and protruding inside the retaining wall. An open-cut girder method, in which a girder is incorporated to support the ground, complete the excavation, and then build up the underground structure frame from bottom to top sequentially, and conversely, a ground-level floor first While constructing and excavating the ground below,
The method is broadly divided into the reverse striking method, in which the building is constructed downward in order to the floor.

[0003]

In the case of the conventional open cut girder method, it takes a lot of man-hours, time, and cost for the work of erection of the temporary material and the removal of the girder.
In particular, in the case of a narrow and deep underground structure, it takes a great deal of man-hour, time and cost. Further, there is a drawback that the construction progress and the workplace environment are affected by weather conditions.

[0004] On the other hand, in the case of the reverse striking method, an all-weather type work can be performed in which the preceding frame also serves as a cutting beam and also serves as a roof at a construction site. However, since the excavated ground is always the work place, it is necessary to level the ground to secure the scaffolding, and it is difficult to employ an automatic excavator. In addition, the construction of the skeleton requires considerable work at a high place, so that various scaffolds and columns must be used, and the work is troublesome and involves dangers.

In any case, in the construction work of the underground structure, the industrialization and automation of the production are delayed compared with the above-ground work, and it is necessary to solve the problem of shortening the construction period, saving labor, and reducing the cost of temporary construction. It is an issue.

[0006]

As a means for solving the problems above Ki従 come art SUMMARY OF THE INVENTION, skeleton construction method of underground structure according to the invention described in claim 1, and applying a b)構真Column 2 After the first excavation of the ground 1,
Constructs a stage to construct a floor 3 on the ground level, b) Me secondary excavation of the ground 1 advances, the first driving bed 4 as the lowest floor of the bed to the drilling bottom, the first Device 5 that moves along the vertical shaft 2 on the driving floor 4 of the vehicle
And a step of constructing a second driving floor 6 on the jack device 5 to be a floor one floor higher than the lowest floor . C) tertiary excavation of the ground 1 First, the first driving floor 4 is connected to the jack device 5
The same jack device under up, then the second drive floor 6 press 5
A step of lowering until can build position under the first floor floor locations Ri by the the steps of constructing a basement floor of the floor 7 on d) said second drive floor 6, e) the first and second Me lowering the second drive floor 4 and 6 proceeds, the second
Of the basement floor 7 on the drive floor 6 is positioned at the level of the basement, the method comprising: setting as the設床the first basement floor 7 to the level, f) below, the first and second a lowering of drive floor 4 and 6, one by one building underground floor in the order on the second drive floor 6, its
The step of setting the basement floor as the permanent floor at the mounting position, and finally setting the first and second driving floors 4 and 6 as the permanent floor of the lowest floor and the floor immediately above it And characterized in that:

[0007]

[0008]

[Function] First, the first floor 3 is constructed on the ground level.
Thereafter, the first floor 3 becomes the roof of the construction site, and the underground construction can be performed as all-weather work. In addition to the first and second driving floors 4 and 6 descending along with excavation of the ground, the floor 7 on the first basement floor and the basement floor below it also serve as cutting beams. No temporary work such as beaming or prong is required.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
FIG. 1 shows the construction of the retaining wall 12 and the timber pillar 2 beforehand.
The figure shows a stage where the ground 1 is primarily excavated by the automatic excavator 14 into the same plane shape as the underground structure. FIG. 2 shows the first floor 3 which is permanently installed on the ground level in the plane of the excavation section 13.
Shows the stage of constructing.

FIG. 3 shows a stage where the secondary excavation of the ground 1 by the automatic excavator 14 is advanced. FIG. 4 shows a stage in which the secondary excavation has advanced to such an extent that the first and second driving floors 4 and 6 can be constructed. The jack device 5 is constructed and installed on the first driving floor 4 to extend and contract like a so-called caterpillar along the straight pillar 2. The stage at which the second drive floor 6 serving as the upper floor is constructed is shown. The construction of the drive floors 4 and 6 is preferably carried out by using a PC member whose body is formed into a PC, so that the unloading work of reinforcing bars, formwork and the like is omitted. The first and second driving floors 4 and 6 are successively lowered in accordance with the progress of excavation of the ground, and in this case, the upper surface of the second driving floor 6 is used as a work place for underground construction. . These first and second driving floors 4 and 6 also function as cutting beams for supporting the retaining wall 12 from the inside. In consideration of the effectiveness of each of the above functions, the first (and second) driving floor 4 (6) is pressed against the peripheral portion thereof with the inner surface of the retaining wall 12 as shown in FIG. It has a lateral jack 11 having an earth pressure receiving plate 10, and the jack 11 is extended and driven to press the earth pressure receiving plate 10 against the inner surface of the retaining wall 12.
The position of (6) is fixed. Conversely, the jack 11 is contracted and the earth pressure receiving plate 10 is separated from the inner surface of the retaining wall 12, so that the drive floor 4 (6) can be lowered. Although illustration and explanation are omitted, it is known that the construction of the ground part on the already constructed first floor 3 is carried out in parallel with the construction of the underground structure part by a known reverse construction method. It is performed in the same way as in the case of the above.

In FIG. 5, tertiary excavation of the ground under the first driving floor 4 is recommended, and FIG. 6 shows that the first driving floor 4 is pushed down by the jack device 5 in accordance with the progress of the tertiary excavation. Shows the stages. FIG. 7 shows a stage in which the second drive floor 6 has been lowered by the jack device 5. FIG.
Shows a stage in which the second driving floor 6 is lowered to a position where the floor of the first basement floor can be constructed as described above, and the first basement floor 7 is constructed on the second driving floor 6. . This basement 1
The floor 7 is also constructed using a PC member, so that labor can be saved and the floor 7 can be constructed while the second drive floor 6 is being lowered. The tertiary excavation of the ground by the automatic excavator 14 is continued even during the lowering of the first and second driving floors 4 and 6.

FIG. 9 shows that after the construction of the first basement floor 7 has been completed (or in some cases before the completion), the first driving floor 4 is firstly constructed.
10 is depressed by the effective stroke of the jack device 5, and in FIG. 10, the second drive floor 6 is pulled down together with the first basement floor 7 above it by the jack device 5 to advance downward, and the second drive floor is moved downward. The floor 7 on the first basement floor above the floor 6 is lowered to a regular position on the first basement floor determined by design, and the first basement floor 7 is set as a permanent floor at that position. .

FIG. 11 shows a stage in which the first driving floor 6 has been lowered by the jack device 5 while the first basement floor 7 which is the main floor as described above is left at that position. Although the following steps are not shown and described, the lowering of the first and second driving floors 4 and 6 and the next lower basement floor above the second driving floor 6 are sequentially performed. The steps of building the basement floor at each level and setting the main floor as the main floor are repeated, and finally the first and second driving floors 4 and 6 are moved to the lowermost floor and the upper floor. By setting it as the main floor of the floor, the construction of the underground structure is completed.

In the present invention , as in the above embodiment, the underground 1
Floor 7 and the height position of the drive bed 6 at the time of constructing the (and the same. For other each underground floor), the height position and are different for al attaching the same basement floor 7 as the設床I'm making it . That
The reason is, Ru good on the idea that also in parallel at the time of downward movement of the second driving floor 6 to shorten the construction period promoting the establishment of the first basement floor 7.

[0015]

[Effects of the present invention] According to the method of constructing a skeleton of an underground structure according to the present invention, there is no need for any temporary work and temporary construction work for the girder, and the construction period can be shortened and the construction cost can be reduced. . In addition, since the underground floor can be constructed using the upper surface of the second drive floor 6 as a work place, the ground can be excavated by the automatic excavator 14, and the underground construction can be automated. Also,
The workplace environment (especially at the feet) is good due to the all-weather type with a roof, and the safety and efficiency of underground construction are improved because there is little danger without working at heights. Furthermore, construction of the basement floor and excavation of the ground can be performed simultaneously, which is useful for shortening the construction period.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a stage of primary excavation of a ground.

FIG. 2 is a cross-sectional view of a stage where a first-floor floor is constructed at the ground level.

FIG. 3 is a sectional view of a stage where secondary excavation of the ground has been advanced.

FIG. 4 is a cross-sectional view of a stage where first and second driving floors are constructed.

FIG. 5 is a cross-sectional view of a stage where tertiary excavation of the ground has been advanced.

FIG. 6 is a sectional view in which the first driving floor is lowered.

FIG. 7 is a sectional view in which a second driving floor is lowered.

FIG. 8 is a sectional view in which a floor of the first basement floor is constructed on the second driving floor.

FIG. 9 is a sectional view in which the first driving floor is lowered.

FIG. 10 is a sectional view in which the first basement floor is set as a permanent floor.

FIG. 11 is a cross-sectional view in which only the second drive floor is lowered while leaving the first basement floor.

FIG. 12 is an enlarged view of a portion A in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ground 2 Construction pillar 3 1st floor 4 First drive floor 5 Jack device 6 2nd drive floor 7 Basement 1st floor 10 Earth pressure receiving plate 11 Jack 12 Mountain stop wall

Continued on the front page (72) Inventor Tetsuya Morita 4-1-1-13 Honcho, Chuo-ku, Osaka-shi, Osaka Inside the Osaka Main Store of Takenaka Corporation (72) Inventor Kiyoshi Ogura 4-1-1, Honcho, Chuo-ku, Osaka-shi, Osaka No. 13 Takenaka Corporation Osaka Main Store (72) Inventor Hisao Mukai 4-1-1 Hommachi, Chuo-ku, Osaka City, Osaka Prefecture No. 13 Takenaka Corporation Osaka Main Store (72) Inventor Hozen Hasegawa Central Osaka, Osaka 4-1-1-13 Honcho, Ward, Takenaka Corporation Osaka Main Store (72) Inventor Mitsuhiro Sato 4-1-1-13 Honmachi, Chuo-ku, Osaka-shi, Osaka Prefecture Osaka Main Store Takenaka Corporation (72) Inventor Hasebe Sakai 4-1-1-13 Honcho, Chuo-ku, Osaka-shi, Japan Takenaka Corporation Osaka Main Store (72) Inventor Yoshiteru Iwasa 2-5-1-14 Minamisuna, Koto-ku, Tokyo Inside Takenaka Corporation Technical Research Institute (72 Inventor Eiji Room Takenaka Corporation, 5-14 Minamisuna, Koto-ku, Tokyo Inside the Technical Research Institute (72) Inventor Tadaharu Hagiwara 2-5-14-1 Minamisuna, Koto-ku, Tokyo Inside the Technical Research Center Takenaka Corporation (72) Inventor Hiroyuki Nishimura 2-5-1-4 Minamisuna, Koto-ku, Tokyo Takenaka Corporation Inside the Technical Research Institute (72) Inventor Hiroshi Kibayashi 2-5-14 Minamisuna, Koto-ku, Tokyo Inside the Technical Research Center Takenaka Corporation (56) References JP-A-3-100225 (JP, A) (58) Field surveyed (Int.Cl. ⁶ , DB name) E02D 29/045

Claims (1)

(57) [Claims] A) constructing a trussed pillar and first excavating the ground, and then constructing a first floor at the ground level; b) advancing the second excavation of the ground, and placing a bottom at the bottom of the excavation. Constructing a first driving floor to be a floor of the floor, and installing a jack device that moves along the straight pillar on the first driving floor;
Constructing a second driving floor, which is a floor one floor above the lowest floor, on the jack device; c) tertiary excavation of the ground, and according to the progress of the tertiary excavation of the ground, First, push down the first drive floor with the jack device.
Below, under then place Ri by the second drive floor to the same jack device 1
Lowering the floor of the floor to a position where it can be constructed; d) constructing the floor of the first basement floor on the second driving floor; e) proceeding with the lowering of the first and second driving floors. because, the second driving floor underground 1 floor positioned on the first floor level basement, a step of setting as the設床the basement floor to the level, f) below, the first and second drive floor and lowering of, one by one building underground floor in the order on the second drive floor, the basement
Repeating the step of setting as the permanent floor at the mounting position, and finally setting the first and second driving floors as the permanent floor on the lowest floor and the floor immediately above it. Characterized by the construction method of the skeleton of the underground structure.