JPH074060A - Lift-up execution equipment for multistoried building - Google Patents

Abstract

PURPOSE:To eliminate the need for a temporary material, and to improve efficiency by constructing girders and columns corresponding to one story, pushing up the whole story by jacks, building girders and columns corresponding to another one story in a lower section and obliquely disposing the jacks at symmetric positions with respect to the column. CONSTITUTION:The upper story structure of a building composed of existing girders 1 and columns 2 is lifted up by expansion jacks 3. New columns 2 are extended in the lower space of the columns 2, and the front ends of piston rods 3B are removed from binding sections 5 and the expansion jacks 3 are shrunk. The upper story structure is retained at the position of lifting as it is by the bearing of the columns 2 to be extended of a lower story and temporary receiving jacks at that time, and falling is prevented by the bearing of auxiliary jacks 6 in the expansion jacks 3. The piston rods 3B of the shrunk jacks 3 are connected to the binding sections 5 of the extended columns 2, and the binding sections 5 are coupled by horizontal girders 1 and a floor is executed. Accordingly, execution corresponding to one story is completed, the jacks 3 are elongated synchronously again and a routing is repeated, and a new story is constructed to a lower section while pushing up an assembly completion story.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for constructing buildings such as buildings one by one on the ground and constructing them while lifting them up.

[0002]

2. Description of the Related Art In recent years, many lift-up construction methods have been proposed in which a building such as a building is constructed one by one on the ground, and the constructed portion is sequentially lifted up by a jack and a new layer is constructed under the construction.

[0003]

In these construction methods, the lift-up jacks are generally arranged in a vertical direction and are designed to support only a vertical load. Then, the horizontal load caused by the earthquake and wind was dealt with by supporting the beams and columns of the constructed layer with braces and temporary materials such as wire ropes.

However, by providing these temporary materials in addition to the jack, the working space is narrowed, and particularly when the temporary materials are present on the material transportation passage or the moving passage of the working machine, the construction work efficiency is reduced. There was a problem.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a construction device capable of supporting loads in both vertical and horizontal directions without using the above-mentioned temporary material.

[0006]

SUMMARY OF THE INVENTION According to the present invention, after constructing a beam and a pillar for one layer of a multi-layer building, the whole layer is pushed up by a jack and a beam and a column for one layer are newly constructed under the beam. Thus, in a lift-up construction device for a multi-story building that constructs a multi-story building while sequentially pushing the constructed layers upward, a pair of jacks for uplifting each of the pillars at symmetrical positions about the pillar. It is arranged in an inclined state.

Further, the pair of jacks are arranged in a direction orthogonal to each other between adjacent columns on a plane.

[0008]

By arranging the jacks in symmetrical positions in a tilted state, it becomes possible to support loads acting in the vertical and horizontal directions on the building only by the jacks without using temporary materials.

Further, by arranging each pair of jacks in a direction orthogonal to each other between the adjacent columns, it is possible to withstand even horizontal loads from all directions acting on the building.

[0010]

1 to 5 show an embodiment of the present invention.

FIG. 1 shows a part of a building under construction, where 1 is a beam, 2 is a column, each of which is made of steel frame, and a pair of symmetrically inclined telescopic jacks are provided at the connecting portions 5 of the beam 1 and the column 2. 3 (3
X, 3Y).

The telescopic jack 3 has a cylinder tube 3A whose base end is hingedly connected to a foundation 4 provided on the ground, and a piston rod which is elastically projecting from the cylinder tube 3A and whose tip is detachably hinged to the connecting portion 5. Three
B, and the hinges are rotationally displaced according to the expansion / contraction position of the piston rod 3B, thereby changing the inclination angle within a certain range. In order to make each telescopic jack 3 self-supporting, a pair of auxiliary jacks 6 (6X, 6Y) are provided in an inclined state between the cylinder tube 3B and the foundation 4.

As shown in FIG. 5, the beams 1 are arranged in a grid pattern, columns 2 are erected at their intersections, and connecting portions 5 are provided. The telescopic jacks 3 form two isosceles triangles when viewed from the side, two sets at each construction position of the columns 2
Are arranged symmetrically with respect to. As shown in FIG. 5, the telescopic jacks 3 of each set are arranged in the same row below the beams 1 forming the outer circumference of the building, with respect to the pillars 2 arranged on the outer circumference of the building on the plane. In the above, the columns 2 adjacent to each other in the front, rear, left, and right are arranged along the beam 1 in directions orthogonal to each other. The expansion / contraction of these expansion / contraction jacks 3 is controlled by a controller composed of a microcomputer or the like.

Next, the operation will be described.

In FIG. 1, the upper layer structure of the building, which is composed of the beam 1 and the pillar 2, which has already been constructed, is lifted up by all the telescopic jacks 3 which are extended all at once.

In this lift-up state, a new column 2 is added to the space below the column 2 as shown in FIG. The height of the lift-up is set to be larger than the height of the additional pillar 2,
When the pillar 2 is replenished, the temporary receiving jack 7 is inserted between the pillar 2 and the foundation 4 to adjust the height.

After the columns 2 have been added to all positions, the tip of the piston rod 3B is removed from the connecting portion 5 and the telescopic jack 3 is contracted. At this time, the upper layer beam 1 and the column 2 are supported by the newly added lower layer column 2 and the temporary receiving jack 7, so that the upper layer structure remains at the raised position even when the expansion jack 3 is contracted. Also, the telescopic jack 3
Is supported by each pair of auxiliary jacks 6, so that it does not fall down even if it is separated from the coupling portion 5.

Next, the piston rod 3B of the contracted telescopic jack 3 is connected to the connecting portion 5 of the column 2 which is added as shown in FIG. Then, in this state, as shown in FIG. 4, the connecting portions 5 are connected by the horizontal beams 1, and the floor is further constructed.

This completes the construction of one layer. If the telescopic jack 3 is again synchronously extended in this state, the same state as in FIG. 1 is obtained. Therefore, the above-described working process is repeated again to further construct the lower layer portion. In addition, the extension operation of the telescopic jack 3 allows the auxiliary jack 6 to freely expand and contract (free).
It is done in such a state.

In this way, the structure of the building is completed by lifting up the assembled layer and constructing a new layer below it.

Not only the vertical load due to its own weight but also the horizontal load due to an earthquake or wind acts on the structure under construction, but since the expansion jack 3 is obliquely arranged between the joint portion 5 and the foundation 4. All of these loads including horizontal loads are supported by the telescopic jack 3. That is, for the vertical load, all the telescopic jacks 3 share and support the load, and for the horizontal load, the telescopic jack 3 that receives the compressive force by the horizontal load shares the load. The number of telescopic jacks 3 supporting a horizontal load is about one-fourth of the total number when a horizontal load is applied in the left-right direction or the front-back direction in FIG. 5, but the horizontal load applied to the structure is the number of vertical loads. Since it is one-half, a sufficient supporting force can be obtained even with this number of expansion / contraction jacks 3.

In this case, since the extension jacks 3 are arranged so that the plane directions of the extension jacks 3 are perpendicular to each other between the adjacent pillars 2, the structure can withstand the horizontal loads from all the left, right, front and rear directions equally. be able to.

As described above, since the telescopic jack 3 has a horizontal supporting force, a bracing for supporting a horizontal load and a temporary material such as a wire rope are unnecessary. Therefore, as compared with the case where these temporary members are provided in addition to the expansion jack 3, a large space for work and movement of the machine can be secured, and the work of assembling the structure can be efficiently performed. In addition, the labor required for arranging these temporary materials is also unnecessary.

[0024]

As described above, according to the present invention, since the jacks for pushing up the constructed layer are arranged in a tilted state at symmetrical positions around the column, the load applied to the building under construction in both horizontal and vertical directions. Can be supported with a jack. Therefore, it is not necessary to provide a bracing member or a temporary material such as a wire rope to support the horizontal load, and a working space and a moving space for the working machine can be largely secured accordingly. In addition, it is possible to save the labor required for disposing the temporary material. Therefore, there is an effect that the efficiency of construction work by the lift-up method is improved.

[Brief description of drawings]

FIG. 1 is a side view of a lift-up construction device showing an embodiment of the present invention.

FIG. 2 is a side view of a lift-up construction device during a pillar replenishment work.

FIG. 3 is a side view of the lift-up construction device after changing the jack connection position.

FIG. 4 is a side view of a lift-up construction device during construction of a beam.

FIG. 5 is a plan view of a lift-up construction device and a building structure.

[Explanation of symbols]

 1 beam 2 pillar 3 telescopic jack

Claims (2)

[Claims] 1. After constructing a beam and a pillar for a single layer of a multi-story building, a jack is used to push up the entire layer and a new beam and a column for a new layer are constructed below the layer, so that the constructed layers are sequentially raised. In a multi-layer building lift-up construction device for constructing a multi-layer building while pushing it up, a pair of push-up jacks for each of the columns are arranged in a tilted state at symmetrical positions about the column. Lift-up construction equipment for multi-story buildings. 2. The lift-up construction apparatus for a multilayer building according to claim 1, wherein the pair of jacks are arranged in mutually orthogonal directions between adjacent columns on a plane.