JPH0833031B2 - How to build a building - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for constructing a building, and in particular, a movable gantry / working movable beam is lifted up along a core portion made of concrete or the like to move the movable beam. Use it to build the structure of each floor from bottom to top.

[Conventional technology]

In the high-rise buildings, the core wall is made of RC and the outer frame is made of steel, which is widely used in the United States as a labor-saving construction method.

[Problems to be Solved by the Invention]

In order to introduce the above-mentioned structural type into Japan, it is necessary to make it a seismic resistant structure, and therefore, it is necessary to provide a hat beam that connects the core wall and the outer peripheral frame on the top floor. However, this hat beam is usually composed of steel trusses and uses complicated joints and heavy weight steel frames, and there is a problem that it is difficult to construct because it will be installed on the top floor of a high-rise building.

The present invention has been made by paying attention to such problems of the prior art, and while lifting the beam to be the hat beam to the ground and lifting it up along the core wall,
We decided to use this beam as a moving beam that doubles as a working gantry for the purpose of constructing the frame of each floor during the lift-up process, and the purpose is to provide a concrete method for the lift-up. .

[Means for solving the problem]

The construction method of the building of the present invention,
Constructed in advance while hoisting the material with a core crane, and then lifted up the working gantry-cum-moving beam that was erected and equipped with a lifting device,
In this state, using the lifting device attached to the moving beam, the material of the floor below the floor with the moving beam is carried in to construct the skeleton part of that floor, and then the moving beam is similarly lifted up. Then, the structure of the upper floor is repeatedly constructed in the same manner, and the building is sequentially constructed from the bottom to the top, and the projecting portion is projected horizontally from the end of the moving beam. By installing the protruding portion from the lower body,
By moving the lifting device from the moving beam to the overhanging part, the material is lifted from the outside of the skeleton to the floor below the moving beam by the lifting device to build the skeleton part of the floor, and the moving is performed. A jack that expands and contracts vertically is installed on the beam, and projections that advance and retreat toward the core portion are provided on the upper and lower portions of the jack, and the core portion is engaged with the upper and lower projections of the jack. The portions are provided at appropriate intervals in the vertical direction, and the moving beams are lifted up while applying the load of the moving beams to the core portion by advancing and retracting the upper and lower projections and expanding and contracting the jack. is there.

[Action]

In the present invention, the core part constructed in advance using the material lifted by the core part crane is used as a guide to lift up the movable gantry-cum-moving beam, while moving up and down each floor from above to below. The material is hoisted and carried in via the hoisting device mounted on the beam, and the skeleton of the beam, floor, wall, ceiling, etc. is constructed. An overhanging portion is projected from the end of the movable beam, and by moving the lifting device to the overhanging portion, the material is lifted from the outside of the skeleton, and the skeleton portion is constructed by this material. be able to.
Further, in lifting up the movable beam, the upper and lower projections of the jack installed on the movable beam are moved forward and backward with respect to the engaging portion formed in the core portion to engage and disengage, and the jack is moved. By expanding and contracting, the jack is lifted like a scale insect and the moving beams are sequentially lifted up. At this time, the jack may be expanded and contracted once to lift up one floor, or the jack may be expanded and contracted multiple times to lift up one floor. At this time, the self-weight of the movable gantry work beam and the weight applied to the movable beam are supported by the core portion via the protrusions of the jack. Therefore, during the construction work of the skeleton on the floor composed of the moving beams,
It is preferable that both the upper and lower projections of the jack are engaged with the engaging portions of the core wall in order to stably support the moving beam on the core wall.

〔Example〕

FIGS. 1 (a) to 1 (f) are explanatory views showing the procedure for constructing a building, in which FIG. 1 (a) constructs the core portion 1 on the foundation in advance with concrete. The core portion 1 is constructed in the center of the plane of the building in this embodiment, and is made of concrete for installing an elevator, an equipment machine room, a toilet and the like. The material for constructing the core unit 1 is carried out by a tower crane 2 installed above the core unit 1, and the lifting is carried out via the inside of the core unit 1. In addition, in parallel with the construction of the core part 1, the floor of the first floor will be put into operation.

When the core part 1 is constructed up to a predetermined floor, FIG. 1 (b)
As shown in Fig. 3, the movable beam 3 which also serves as a work gantry on the floor of the first floor
And the ceiling traveling type lifting device is attached to the lower surface of the moving beam 3. The movable beam 3 is provided with an overhanging portion 3a protruding in the horizontal direction. At this time, a jack described later is also attached to the movable beam 3. Furthermore, from this time, the structure of the first basement floor is constructed by excavating the ground by the so-called reverse driving method.

FIG. 1 (c) shows a state in which the construction of the skeleton 5 on the 10th floor is in progress using the overhead traveling type lifting device 4 attached to the lower surface of the movable beam 3, and has already been constructed. From the outside of the skeleton 5 up to the 9th floor, the materials for constructing the 10th floor are hoisted and carried in using the hoisting device 4, and construction work is performed. Here, it is the jack 6 that supports the movable beam 3 with respect to the core portion 1, and the jack 6 also acts to lift up the movable beam 3 with respect to the core portion 1. The structure and operation of the jack 6 will be described later. It should be noted that, in this example, it can be understood that a space having a height corresponding to two or more floors is provided between the upper part of the constructed frame 5 and the movable beam 3.

Figure 1 (d) shows the building 5 on the 20th floor,
Here, the skeleton of the second basement floor is constructed in the same manner as the first basement floor. Further, FIG. 1 (e) shows a state in which the skeleton 5 on the 30th floor is being constructed.

In the same figure (f), the frame 5 on the 34th floor is constructed, and in order to build this floor, the movable beam 3 which was above the floor of the 34th floor with a space of 2 floors is lowered by 1 floor. The moving beam 3 is at the height of the 35th floor. At this stage, the tower crane 2 has been removed because the core part 1 has already been constructed. In addition, as described above, before lowering the movable beam 3 by one floor, the lifting device 4 attached to the movable beam 3 and the overhanging portion 3a protruding laterally from the movable beam 3 are removed. ing. After this one-floor descent, the jack 6 attached to the moving beam 3 is also removed. Therefore, regarding the part where the jack 6 hits during the descent, a part of the 34th floor around the core part 1 is not constructed until the jack 6 is removed, and the remaining part of the 34th floor is finished after the jack 6 is removed.

Here, the movable beam 3 can configure the top floor of the building itself and its roof as a hat beam, and can improve the connection strength between the core portion 1 and the surrounding structures. Equipment for managing buildings may be installed in the building, or may be used for other purposes.

FIG. 2 is a perspective view of the building under construction, showing the moving beam 3
You can understand how the core part 1 surrounds the core part 1,
The jump form 7 for forming the is also shown.
The tower crane 2 is omitted here. The structure of the core part 1 may be any structure such as RC structure, PC structure, S structure and the like, and in this embodiment, the core part 1 has a wall shape, but may have a columnar shape.

FIG. 3 is an explanatory view of the jack 6, and the jack 6 is installed at a position on the moving beam 3 surrounding the core portion 1. The jack 6 includes a cylinder device 6a driven by hydraulic pressure or air pressure, an upper block 6b fixed to the upper end of its piston rod, and a lower block 6d fixed to the lower end of the tube of the cylinder device 6a via a frame 6c. A bracket 6e fixed to the frame 6c and a winch 6f installed on the movable beam 3 and connected to the bracket 6e.

The inner edge of the movable beam 3 and the frame 6c surround the core portion 1, and a plurality of jacks 6 are arranged along the core portion 1 having a quadrangular plane so as to surround the core portion 1 as shown in FIG. It
Note that FIG. 4 shows only the main structural members that make up the movable beam 3.

The upper and lower blocks 6b and 6d of the jack 6 are respectively provided with advancing and retracting drive devices 8 and 9 driven by hydraulic pressure or pneumatic pressure, and these are respectively provided with protrusions 8a and 9a which are advanced and retracted toward the core portion 1. ing. In addition, the core portion 1 is provided with holes 11 into which the protrusions 8a and 9a are engaged, which are formed at appropriate intervals in the vertical direction, and which are formed in the horizontal direction corresponding to the number and position of the jacks 6 and the protrusions 8a and 9a. It forms the engaging part of 9a. The upper and lower pitch of this hole 11 is
The movable beam 3 can be lifted up by one floor by expanding or contracting the jack 6 once or a plurality of times, such as a pitch corresponding to one floor of the skeleton 5, or a half pitch thereof. In addition,
A circuit for supplying hydraulic pressure or pneumatic pressure to the jack 6 and the forward / backward drive devices 8 and 9 and valves for controlling them are omitted.

An example of lifting up the movable beam 3 will be described with reference to FIG. 3. First, the advancing / retreating drive device 9 is driven to retract the protrusion 9a, and the movable beam 3 is supported by the core portion 1 only by the protrusion 8a. Then, the winch 6f is rolled up, the pressure of the cylinder device 6a is released, and the jack 6 is contracted, whereby the frame 6c
Then, the lower block 6d is pulled up together with the forward / backward drive device 9 and the protrusion 9a.

Here, when the protrusion 9a is pulled up by a predetermined dimension, the protrusion 9a becomes the same height as the hole 11 one above, and in this state, the protrusion 9a is advanced, and after engaging with the hole 11, the upper protrusion 8a is retracted. Then, the movable beam 3 is supported by the core portion 1 only by the lower protrusion 9a to extend the jack 6 and rewind the winch 6f.
When the jack 6 is extended to a predetermined length, the movable beam 3 rises by the same size, and the upper projection 8a becomes the same height as the upper hole 11 of the previously engaged hole. To be engaged with the hole 11. This is one pitch increase of the jack 6, but in order to raise the pitch of one floor, the pitch number of the jacks 6 is determined in relation to the vertical pitch of the holes 11 and the dimension in which the jack 6 expands and contracts.

In the above description, the contraction of the jack 6 is controlled by the winch 6f.
However, if the cylinder 6a is a double-acting type, the winch 6f becomes unnecessary because it expands and contracts due to fluid pressure. Also the protrusion 8
As for a and 9a, a well-known advance / retreat mechanism for advancing / retreating a short distance and advancing / retreating by a combination of a spring and a magnetic force can be adopted as in the above-mentioned advancing / retreating. Further, it goes without saying that the above operations are simultaneously performed in the jacks 6 surrounding the core portion 1. Further, in FIG. 3, the upper and lower beam intervals constituting the movable beam 3 are illustrated small, and the truss between the upper and lower beams is not shown.

FIG. 5 shows an example in which a joint beam 12 is constructed at the upper end of the core wall portion and the movable beam 3 that has been raised is connected thereto. 12a is the joint part. In this case, as described above, the movable beam 3 is not lowered after the top floor is constructed,
Constructs the uppermost floor or its roof portion while keeping the same height as the connecting beam 12.

6 (a), (b), (c), and (d) are schematic plan views showing the relationship between the core portion 1 and the movable beam 3, and the movable beam 3 shown in FIG. A plurality of jacks 6 are provided at opposing positions in the same manner as described above. It is needless to say that the present invention can be applied to the relationship between the core wall portion and the movable beam 3 in other modes illustrated here.

〔The invention's effect〕

As described above, according to the present invention, since the working gantry / moving beam for raising to the uppermost floor of the building is erected, the work at a high place for that is eliminated and the moving beam is lifted up. Since the skeleton of each floor from bottom to top is constructed using the moving beams, it is not necessary to use a large span crane to construct the parts other than the core part, and the crane runs on the outer peripheral part. Since there is no need, it is easy to enforce even if there is no room on the site.

In addition, the core part of the building is constructed while hoisting the material by the crane for the core part, while the skeleton part is constructed by moving the lifting device from the end of the moving beam to the overhanging part protruding in the horizontal direction. Since the material is hoisted from the outside of the body to the floor below the moving beam, the hoisting of the material is different for the core part and the body part. Therefore, the lifting of the materials for the core and the body does not interfere with each other.

Furthermore, since a jack was attached to the working gantry / moving beam to lift up the working gantry / moving beam along the core wall in a scaled manner, the working gantry / moving beam lift was lifted. The means of improvement have become concrete.

Furthermore, since the working gantry-cum-movable beam can be finally fixed to the core portion to be a hat beam of a building, the strength of the building as a structure can be improved.

[Brief description of drawings]

1 (a) to (f) are front views showing an example of a building procedure according to the present invention, FIG. 2 is a perspective view of the building under construction, and FIG. 3 shows a jack and a core portion. Cross-sectional view showing the relationship,
FIG. 4 is an explanatory view showing the arrangement of the core part, the movable beam and the jack, FIG. 5 is an explanatory view in the case where a joint beam is installed at the upper end of the core part, and FIGS. 6 (a) to 6 (d) are core parts. It is a top view showing an example of arrangement of a movable beam and a jack. 1 ... Core part, 3 ... Moving beam, 3a ... Overhang part, 5 ... Skeleton, 6 ... Jack, 6a ... Cylinder device, 8,9 ... Forward / backward drive device, 8a, 9a ... Protrusion , 11 …… Hole (engagement part).

Claims (1)

[Claims] 1. A core part of a building is constructed in advance while hoisting a material by a core part crane, and then a movable gantry-cum-moving beam which is grounded and equipped with a lifting device is provided on the core part. Lifted up along with, in this state, using the lifting device attached to the moving beam to carry in the material of the floor below the floor with the moving beam to build the skeleton part of that floor, then,
A method of similarly constructing a building from bottom to top by repeating the same process of lifting up the movable beam and similarly constructing the skeleton of the upper floor, and from the end of the movable beam. By projecting the overhanging part in the horizontal direction by projecting the overhanging part from the lower frame, and by moving the lifting device from the moving beam to the overhanging part, the lifting device moves the The material is hung from the outside to the floor below the moving beam to build the skeleton part of that floor, and the moving beam is provided with a jack that expands and contracts up and down, and the upper and lower parts of this jack are directed toward the core part. Each has a protrusion that moves forward and backward,
Further, the core portion is provided with engaging portions for engaging the upper and lower protrusions of the jack at appropriate intervals in the vertical direction. A method of constructing a building, comprising lifting the moving beam while applying a load to the core portion.