JP3049300B2 - Construction method of beam truss in building with overhead traveling crane - 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 for building a beam truss in a building having an overhead traveling crane.

[0002]

2. Description of the Related Art Conventionally, a beam truss of a steel structure of a building having an overhead traveling crane, such as a turbine building in a power plant, has conventionally been constructed in a relatively small scale with respect to columns and wall steel frames of the preceding building. If the weight is easy or if it is possible to bring in a large lifting crane even if the scale is large, the lifting capacity of the crane must be determined in accordance with the construction method for the entire span at one time, or to the size of the scale. It is common sense that if there is a situation that cannot be handled, it will be based on the split erection that is temporarily received by the temporary receiving vent gantry.

[0003] Further, it is a common sense that post-work such as finishing the ceiling of a building after constructing a beam truss is performed by erection of a total scaffold from a lower portion or erection of a suspended scaffold all over.

[0004]

[Problems to be solved by the invention]
Simultaneous work beneath the beam truss during construction is unacceptable for any of the vent erections. Therefore, there is a problem that the step must be reduced in the construction period and the construction period cannot be prolonged. On the other hand, in the subsequent work such as finishing, the scaffolding from the lower part and the suspension scaffolding must be extended over the entire area, and the cost of the temporary material is inevitably increased. Further, in the former case, there is an inconvenience that simultaneous work in the lower part is not allowed, and in the latter case, another means is required due to the occurrence of an unfinished part for using a temporary material such as a chain of a hanging material. However, there is a drawback that the work must be carried out at the same time, and there is a problem that it is unavoidable to lengthen the construction period and increase new temporary costs.

The present invention has been made in view of the above-mentioned problems of the prior art, and can perform work directly below even when a beam truss is being constructed. Provides a method of building a beam truss in a building with an overhead traveling crane that can greatly reduce the scaffolding and perform subsequent work such as finishing, thereby significantly shortening the construction period and reducing costs. It is intended to be.

[0006]

In order to achieve the above object, a method of constructing a beam truss in a building having an overhead traveling crane according to the present invention comprises: A traveling stage that serves as a crane girder installed on the wall steel frame, serving as a steel frame gantry, a scaffold for post-work after the steel frame erection, a protective gantry that allows up and down work, and a lifting equipment base for substructure work. After that, while the temporary traveling stage is being moved, the above-mentioned various operations such as the jointing of the beam trusses of the collective or divided construction are sequentially performed.

[0007]

The traveling stage temporarily mounted on a crane girder installed on the wall steel frame of the preceding building is a movable steel frame gantry, a scaffold for post-work after the steel frame erection, a protective gantry that allows up and down work, Since it will provide a lifting equipment base for substructure work, work directly under the beam truss being built is allowed, simultaneous work up and down is possible, and it is necessary to build a simple scaffold on the stage. Therefore, post work such as finishing after the construction of the beam truss can be performed without the need for a scaffold or a suspended scaffold from below. As a result, remarkable shortening of the construction period and cost reduction can be expected.

[0008]

Embodiments will be described with reference to the drawings.
1 to 18, the column-wall steel frames 1, 1 ′ are erected in advance using crawler cranes 2, 2 ′, and crane girders 3 are installed. The crane girder 3 has a temporary traveling stage 6 having traveling carts 4,.
Is erected. The temporary stage 6 is, for example, a main girder 17
Is connected to the stage frame 18 and the entire surface scaffold 5 is laid on the upper surface. Incidentally, the main girder 17 may be replaced by a permanently installed traveling crane for effective use.
The rail that must be secured on the crane gutter 3 for traveling the stage 6 may be temporary or may be a rail provided for a main traveling crane.

The traveling stage 6 temporarily provided on such a crane girder 3 includes a steel erection gantry for a beam truss 7 in a subsequent erection, a post-work scaffold after the steel erection, and a vertical operation. Can be used as a protective gantry and a lifting equipment base for substructure construction. The beam truss 7 may be either a one-piece construction or a divided construction.
Is shown on the side of the divided erection, and the crawler crane 8 or 9 is divided into three divided truss members 7a, 7
b and 7c are suspended.

While the steel truss 7 is being constructed on the stage 6 and the joints are being constructed, the portion immediately below the stage 6 is protected, so that the operation floor is provided as shown in FIGS. The construction of the steel frame 10 on the third floor can be performed simultaneously. 9 to 17 show this step in detail. That is, the truss beam set 7 'brought on the stage 6 is received on the jack, and the main fastening is performed. 1 in the figure
Reference numeral 1 denotes a falling jig for preventing the set 7 'from falling (FIG. 9).

A jack-down operation for adjusting the stiffness of the truss beam set 7 'is performed (FIG. 10). After the connection of the connecting portion 12 with the beam truss 7 of the preceding erection, the connection of the beam truss 7 of the preceding erection is completed (FIG. 11). For the beam truss 7 for which the joining has been completed, a simplified scaffold (not shown) is assembled on the stage 6 to perform painting and other finishing work, and to construct the second- or third-floor steel frame 10 under the stage 6 ( (FIG. 12).

The stage 6 is traveled to protect the steel frame 10 constructed as described above, and the installation is adjusted (FIG. 13). The above-described process of FIG. 9 is performed on the stage 6 and the steel frame 10 is fully tightened (FIG. 1).
4). The above-described step of FIG. 10 is performed on the stage 6 (FIG. 15).

The above-described step of FIG. 11 is performed on the stage 6 (FIG. 16). After the above procedure is repeated, concrete placing 13 of the stable frame portion is sequentially performed (FIG. 17). The lower part above is easier to do because of the accompanying lifting equipment, but FIG.
The following shows an example in which the is used for the lifting equipment base. That is, the rail 14 is laid on the stage 6 and the small crane 15 is run. Alternatively, a ceiling suspended hoist crane 16 that can move in the X and Y directions is mounted on the lower surface of the stage 6.

The stage 6 may be run from one end of the building to the other end, or two stages may be run in opposite directions from the center, depending on the circumstances of the building.
In addition, of course, they are dismantled and collected at the end. When the beam truss 7 shown in FIGS. 9 to 11 is constructed and the traveling stage uses a permanent overhead traveling crane, the present invention has the following advantages.

That is, as shown in FIG. 19 to FIG. 28, in the beam truss divided construction method, a jack 19 for receiving the truss member is arranged on the temporary stage 6 (FIG. 19), and the divided truss member 7a is provided. , 7c, 7d are brought in and joined under a predetermined degree of curl (FIGS. 20, 21, and 2).
2). Thereafter, the supporting force of the jack 19 is released (FIG. 23), and it is confirmed whether or not the degree of curl of the truss beam set 7 'is as specified.

The jack 19 lowers the level and re-supports the truss beam set 7 'whose level has been lowered by releasing the supporting force (FIG. 24). In this state, the jack 19 has been described with reference to FIG. The connection of the connecting portion 12 shown in FIG. 25 is performed. A series of these steps is performed as shown in FIGS. 25 to 27. Naturally, there is a level difference between the truss beam set 7 'and the truss beam set 7' which is set to a higher level in anticipation of the descent allowance after the connection of the tie portion than the end level of the brace 20 of the tie portion 12. , 20 ′ have different lengths (FIGS. 25A and 25B). At this level, when the connecting portion 12 is connected under the support and the supporting force is released, the tip slightly lowers due to the load by the connecting portion 12 (FIG. 26).

Furthermore, the level is lowered by the above-described concrete casting 13 in FIG. 17 in addition to the down due to the new load due to the earlier connection (FIG. 27). By calculating these gradual level reductions, the calculation is determined. However, the ability to absorb the fastening point error imposed on the braces 20, 20 ', which must ultimately be settled to the same size, is loose if the joining must be performed while maintaining the level difference as described above. This can only be achieved by absorption in the hall, but this requires re-fastening each time, which is disadvantageous in increasing the number of steps.

It is possible to eliminate the disadvantages of the ordination by utilizing the main beam 17 or the traveling crane of the present setting is large weight of the [0018] However the present invention is located in the truss beam set 7 'immediately below that is bringing . That is, as shown in FIG. 28, when the truss beam set 7 'is connected to the connecting portion 12, the fastening material is taken out from the main girder 17 or the traveling crane which can serve as a fastening material mounting base such as the wire 21 or the jack 22 because of its heavy weight. Then, the connecting portion 12 is connected in such a state that it is in conformity with the tip level of the built-in beam truss 7. By doing so, the braces 20, 20 'are fastened to the same size because of the same level, and re-fastening becomes unnecessary, which is preferable in terms of process and quality.

[0019]

Since the present invention is configured as described above, it has the following effects. In the prior art where it is essential to set up a scaffold or vent from the ground, simultaneous work up and down was absolutely impossible. However, according to the present invention, it is possible, and the effects of shortening the construction period and reducing costs are achieved. Is remarkable.

In addition, in particular, as compared with the temporary receiving vent method having a temporary material that is cumbersome to assemble and remove, the scaffold rising from the ground, and the suspending scaffold method, (1) the vent or the scaffold installation site needs to be flat. In the case where there is an obstacle or the like, a complicated member configuration is required and it takes time and effort. (2) Vent or scaffold assembling and disassembling work is a dangerous work at a high place, which reduces workability and increases the number of steps. (3) When the vent is dismantled, the operation is very dangerous because there is already an overlying structure. (4) Since the structure is easy to overturn against horizontal force due to wind, earthquake, etc., it is necessary to take measures to prevent overturning with a wire rope. (5) When constructing a steel frame, the scaffolding equipment cannot be completely completed and unstable work increases. In particular, when a secondary member is attached between the vents, workability is poor and safety is considerably reduced. There are no difficulties such as the above, which is advantageous.

[Brief description of the drawings]

FIG. 1 is a front view of a building according to the method of the present invention.

FIG. 2 is a side view of a building according to the method of the present invention.

FIG. 3 is a plan view of a building according to the method of the present invention.

FIG. 4 is a plan view of a traveling stage in the method of the present invention.

FIG. 5 is a view taken in the direction of arrows AA in FIG. 4;

6 is a view taken in the direction of arrows BB in FIG. 4;

FIG. 7 is a view taken in the direction of the arrows CC in FIG. 4;

FIG. 8 is a view as viewed in the direction of the arrow DD in FIG. 4;

FIG. 9 is a process chart of the method of the present invention.

FIG. 10 is a process chart of the method of the present invention.

FIG. 11 is a process chart of the method of the present invention.

FIG. 12 is a process chart of the method of the present invention.

FIG. 13 is a process chart of the method of the present invention.

FIG. 14 is a process chart of the method of the present invention.

FIG. 15 is a process chart of the method of the present invention.

FIG. 16 is a process chart of the method of the present invention.

FIG. 17 is a process chart of the method of the present invention.

FIG. 18 is an explanatory view using a traveling stage as a lifting equipment base.

FIG. 19 is a truss beam set installation process diagram of the present invention.

FIG. 20 is a truss beam set installation process diagram of the present invention.

FIG. 21 is a truss beam set installation process diagram of the present invention.

FIG. 22 is a truss beam set installation process diagram of the present invention.

FIG. 23 is a truss beam set installation process diagram of the present invention.

FIG. 24 is a truss beam set installation process diagram of the present invention.

FIG. 25A is an explanatory view of a conventional truss beam set, and FIG. 25B is an explanatory view of brace dimensions of a connecting portion.

FIG. 26 is an explanatory diagram of a conventional truss beam set.

FIG. 27 is an explanatory view of a conventional truss beam set.

FIG. 28 is an explanatory diagram of a connection portion connection specification of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1 'Column-wall steel frame 2, 2' Crawler crane 3 Crane girder 4 Traveling trolley 5 Full-scale scaffolding board 6 Traveling stage 7 Beam truss 7a, 7b, 7c Truss member 8, 9 Crawler crane 10 Steel frame 11 Overturn prevention construction Tool 12 Joint 13 Concrete casting 14 Rail 15 Small crane 16 Overhead hoist crane 17 Main girder 18 Stage frame 19 Jack 20, 20 'Brace 21 Wire 22 Jack

──────────────────────────────────────────────────続 き Continuing on the front page (72) Kunihiko Horie 8-21-1, Ginza, Chuo-ku, Tokyo Inside Takenaka Corporation Tokyo Main Store (72) Inventor Hitoshi Minamikawa 8-2-1, Ginza, Chuo-ku, Tokyo No. Takenaka Corporation Tokyo Main Store (72) Inventor Naoki Shimizu 8-21-1, Ginza, Chuo-ku, Tokyo Tokyo Main Company (72) Inventor Daisuke Fukamachi 8-21 Ginza, Chuo-ku, Tokyo No. 1 Takenaka Corporation, Tokyo Main Store (72) Inventor Masahiro Matsuba 8-21 Ginza, Chuo-ku, Tokyo Inside, Takenaka Corporation Tokyo Main Store (72) Inventor Norio Hasegawa Tsurumi-ku, Yokohama, Kanagawa 11-1 Daikokucho Tokyo Electric Power Company Yokohama Thermal Power Plant (72) Inventor 1-3-1 Uchisaiwaicho, Chiyoda-ku, Tokyo TEPCO (72) Inventor Kazuhide Yamauchi 2-1-1, Uchisaiwai-cho, Chiyoda-ku, Tokyo TEPCO Design Co., Ltd. (72) Inventor Fumihiro Ishikawa 2-1-1, Uchisaiwai-cho, Chiyoda-ku, Tokyo TEPCO Design Inc. (72) Inventor Noboru Nishigaki Miyachi Construction Industry Co., Ltd., 1-13-15 Kita-Otsuka, Toshima-ku, Tokyo (56) References JP-A-2-8432 (JP, A) JP-A-58-6025 (JP) , B1) (58) Field surveyed (Int. Cl. ⁷ , DB name) E04G 21/14 E04B 1/35 E04H 5/02

Claims (3)

(57) [Claims] 1. A crane girder installed on a column wall steel frame of a preceding building in a building having an overhead traveling crane,
Temporarily set up a steel frame erected gantry, a scaffold for post-work after the steel frame erection, a protective gantry that allows up and down work, and a traveling stage that serves as a lifting equipment base for substructure work.
A beam truss construction method in a building having an overhead traveling crane, wherein the above-mentioned various operations such as beam truss jointing in a lump or divided construction are sequentially performed while moving the temporary traveling stage. Method. 2. A traveling stage connected to a traveling stage using a permanent overhead traveling crane.
A method for building a beam truss in a building having the overhead traveling crane according to the above. 3. A truss beam set is forcibly deflected to a leading truss tip level by a fastening material suspended on a main frame or an overhead traveling crane, and under such a condition, a connection portion is connected. 3. The method for constructing a beam truss in a building having an overhead traveling crane according to claim 2, wherein the brace has the same dimensions.