JP2952836B2 - Construction method of building - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for constructing a building above an existing structure.

[0002]

2. Description of the Related Art In recent years, in order to effectively utilize the space above existing structures provided on the ground, for example, buildings, roads, railroad tracks, station buildings, and the like, large-scale structures spanning those structures have been proposed. It is being studied to provide a high-rise building. Conventionally, to provide such a building, an existing structure is covered with a temporary curing floor, and a new crane or other construction machine is used to construct a new structure above the existing structure. It is common to adopt a construction method of constructing a building frame.

[0003]

However, the above-mentioned conventional method is not applicable when a sufficient working space cannot be secured around the existing structure because the work is performed from around the existing structure. Therefore, it has been demanded to provide an effective construction method applicable to such a case.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and when a building is constructed above an existing structure provided on the ground, both sides of the existing structure are sandwiched therebetween. , A pair of structures facing each other in parallel to each other is provided, and an artificial ground covering the existing structure is bridged between the upper parts of the structures, and the building is provided on the artificial ground. In constructing the structure and the artificial ground, first, a temporary gantry having a length extending between the structures to be constructed is provided at one end of the structures so as to be orthogonal to the structures. . Then, by performing work from the temporary gantry, the structure is constructed by a predetermined length at a position adjacent to the temporary gantry, and an artificial ground unit having a width dimension corresponding to the length dimension of the temporary gantry is provided. Assembled above and spanned between them by sending it onto the constructed structure. Thereafter, by performing work from the artificial ground unit bridged between the structures, a process of continuously constructing a structure of a predetermined length by continuing to the already-structured structure, and bridging between the structures. By repeating the step of assembling another artificial ground unit on the temporary gantry in the form of being connected to the rear side of the artificial ground unit, and the step of sending out the connected artificial ground unit onto the constructed structure, the temporary gantry With the starting point, the structure and the artificial ground are sequentially constructed by a predetermined length.

[0005]

[Function] After the existing structure is covered with artificial ground, and a new building is provided on the artificial ground, the artificial ground becomes a curing floor for the existing structure and also serves as a work scaffold. You can work safely while using safely. In addition, construction of the artificial ground is carried out by the so-called slide method of assembling, connecting and sending out the units on the temporary gantry, and the construction of the structure supporting the artificial ground is performed on the temporary gantry and the constructed artificial ground. By performing from above, almost all the work can be performed on the temporary gantry and on the constructed artificial ground, and does not require much working space around the existing structure.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 6, the construction method according to the present embodiment, when constructing a building 2 having a form that straddles an existing structure 1 provided on the ground, sandwiches the existing structure 1 on both sides thereof. Are provided with a pair of structures 3 facing each other in parallel with each other, and the existing structure 1
The artificial ground 4 covering the upper part of the
The upper floor has a frame on the upper floor.

In order to construct the building 2, first, FIG.
A temporary gantry 5 as shown in FIG. This temporary gantry 5
The structures 3, 3 to be constructed have a length extending between them, and are provided at one end of the structures 3, 3 so as to be orthogonal to the structures 3, 3. At both ends of the temporary gantry 5, rails 50 for sliding an artificial ground unit 4a described later are provided in advance. And
Starting from the temporary gantry 5, the structures 3, 3 and the artificial ground 4 are sequentially constructed by a predetermined length.

That is, first, a construction machine 6 such as an excavator or a crane is mounted on the temporary gantry 5 and the work is performed from the temporary gantry 5 using the same, as shown in FIG. 5 at the position adjacent to 5
Is carried out for a predetermined length (the structures constructed here are indicated by reference numerals 3a and 3a). The structure 3 in the present embodiment is an outer wall of a low-rise part of the building 2 to be constructed. However, if the artificial ground 4 can be bridged between them, a series of piles or The structure may be a pillar or an underground continuous wall. The artificial ground unit 4a is assembled on the temporary gantry 5 immediately before and after the construction of the structures 3a, 3a. The artificial ground unit 4a has a configuration in which the artificial ground 4 to be constructed is divided into a plurality of sections, and the width of the
a and 3a correspond to the length dimension. Although the artificial ground unit 4a in this embodiment has a structure in which the floor slab 8 is attached to the long span truss 7, other types may be used as long as the desired span length and strength can be obtained. . Further, the artificial ground unit 4a has a strength capable of mounting the construction machine 6 such as an excavator or a crane.

Then, the artificial ground unit 4a is guided by the rail 50 and pushed forward by a slide drive source such as a hydraulic jack, so that the artificial ground unit 4a is constructed as shown in FIG. , 3
a and send it over them.

[0010] Thereafter, as shown in FIG.
The construction machine 6 mounted on the above-mentioned artificial ground unit 4a bridged between the artificial ground units 4a
a Structure 3 already constructed by performing work from above
a, structures 3b, 3a of a predetermined length
b, and another artificial ground unit 4b is assembled on the temporary gantry 5 so as to be connected to the rear side of the artificial ground unit 4a. Then, the connected artificial ground units 4a and 4b are sent out onto the constructed structures 3a, 3a, 3b and 3b in the same manner as described above.

By repeating the above procedure, the structure 3 and the artificial ground 4 are sequentially constructed by a predetermined length,
After these are completed, the building of the upper floor is constructed on the artificial ground 4 as shown in FIG.

According to the above method, the artificial ground 4 serves as a curing floor for the existing structure 1 and also serves as a work scaffold, so that the construction can be performed safely while using the existing structure 1 without any trouble. In addition, the structure 3 is constructed from the temporary gantry 5 or the constructed artificial ground 4, and
By assembling the artificial ground units 4a, 4b,... On the temporary gantry 5 and connecting them to the rear of the already-constructed ones and sliding them, almost all the work is performed on the temporary gantry 5 and on the completed gantry 5. Artificial ground 4
On the temporary gantry 5
Other than securing the installation space, a large work space is not required around the existing structure 1, and the present invention can be applied to a case where a sufficient work space cannot be secured around the existing structure 1.

As shown in FIG. 7, projecting portions 40 projecting forward are provided at both ends of the first artificial ground unit 4a, and the construction machine 6 is mounted on the projecting portions 40. If the work is performed, the construction of the structure 3 can be performed more easily.

[0014]

As described in detail above, according to the method of the present invention, an artificial ground is bridged between structures provided on both sides of an existing structure, and a building is provided on the artificial ground. So, of course, it is possible to safely perform construction while using existing structures without hindrance, as well as to construct the structure and artificial ground sequentially on the temporary gantry and the constructed artificial ground, There is an advantage that a large working space is not required around the existing structure except for securing the installation space for the temporary gantry. Therefore, it is suitable for use when a sufficient working space cannot be secured around the existing structure.

[Brief description of the drawings]

FIG. 1 is a view showing an embodiment of the method of the present invention and showing a state where a temporary gantry is provided.

FIG. 2 is a view showing a state in which a structural body is provided and an artificial ground unit is assembled on a temporary gantry.

FIG. 3 is a view showing a state in which an artificial ground unit is bridged between structures.

FIG. 4 is a view showing a state in which a structure is further provided.

FIG. 5 is a diagram showing a state in which a skeleton of an upper floor is being constructed on artificial ground.

FIG. 6 is a diagram showing an example of a building constructed by the method of the present invention.

FIG. 7 is a view showing another embodiment of the method of the present invention, showing a state where a structure is being constructed from an artificial ground unit having an overhang portion.

[Explanation of symbols]

 Reference Signs List 1 Existing structure 2 Building 3, 3a Structure 4 Artificial ground 4a, 4b Artificial ground unit 5 Temporary gantry.

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takeki Kumagai 1-3-2 Shibaura, Minato-ku, Tokyo Inside Shimizu Corporation (72) Inventor Yoji Moroi 1-2-3 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Shuji Okuda 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (58) Field surveyed (Int.Cl. ⁶ , DB name) E04H 1/00 E04G 21/14

Claims (1)

(57) [Claims] 1. A method for constructing a building above an existing structure provided on the ground, comprising: providing a pair of structures facing each other in parallel on both sides of the existing structure, An artificial ground covering the upper part of the existing structure is bridged between the upper parts of the structures, and the building is provided on the artificial ground.In constructing the structure and the artificial ground, first, A temporary gantry having a length extending between the structures to be constructed is provided at one end of the structures so as to be orthogonal to the structures, and then the work is performed from the temporary gantry to form the temporary gantry. At the adjacent position, the structure is constructed for a predetermined length, and an artificial ground unit having a width corresponding to the length of the structure is assembled on a temporary gantry, and is assembled on the constructed structure. A step of bridging between them by sending them out, and then performing a work from the artificial ground unit bridged between the structures so as to be continuous with the already constructed structure and further construct a structure of a predetermined length And a step of assembling another artificial ground unit on the temporary gantry in a form to be connected to the rear side of the artificial ground unit bridged between the structures, and sending out the connected artificial ground unit onto the constructed structure A construction method for a building, comprising repeating the steps to sequentially construct the structure and the artificial ground by a predetermined length starting from the temporary gantry.