KR0132550B1 - Extraordinary method for construction - Google Patents

Abstract

An elevating device for the steel skeleton structure of a building and a construction method for the steel skeleton structure of the above the ground stories are disclosed for preventing accidents and shortening the worked period by prefabricating walls after first constructing the steel skeleton. After the underground stories are built, hydraulic elevating devices (10) are installed on columns (1A) extended upwardly from the first floor underground (B1). The elevating mechanism (13b) is disposed just above the first floor (F1) above ground when the piston (12) of the hydraulic cylinder (11) is completely contracted so as to provide convenience in welding assembly of the beams of the column. The H beams (1B) are secured in the recess (31) and both ends are welded to the column (1A). The hydraulic jacks (18a,18b) of the elevating mechanism (13b) are actuated for the pressing elements (16a,16b) to squeeze the center of the column, and the pistons of the hydraulic jacks (17a,17b) of the lower securing mechanism (13a) are contracted to move the pressing elements (15a,15b) upwardly along the slope (19).

Description

Steel structure climbing device of high-rise building and construction method of ground structure steel structure

Figure 1 is a state of construction of ground layer steel structure for explaining the present invention.

Figure 2 is a plan view illustrating an arrangement state of the hydraulic lifting means for raising the steel structure of the present invention.

3 is a perspective view showing the installation state of the hydraulic lifting means of the present invention.

Figure 4 is a cross-sectional view of the operating state of the upper elevating device and the lower fixing device of the hydraulic rising division of the present invention.

5 and 6 show the present invention as an operating state of the hydraulic lifting means,

5 is before raising the steel structure to the hydraulic lifting division,

Figure 6 shows the state of raising the steel structure to the hydraulic rise division.

7 is a cross-sectional view taken along the line A-A of FIG. 1, showing the structure of the working scaffold installed in the ground layer of the present invention.

* Explanation of symbols for main parts of the drawings

1: Steel structure 1A: Column

1B: beam 10: hydraulic lifting means

11: hydraulic cylinder 12: piston

13a: Lower fixing device 13b: Upper lifting device

14a, 14b: through holes 15a, 15b and 16a, 16b: rolling pin

17a, 17b and 18a, 18b: small hydraulic jack 19: inclined surface

The present invention is to construct a high-rise building in a method of assembling prefabricated wall materials, etc. after the multi-layered steel structure on the ground in advance, composed of columns and beams that are the main skeleton of the high-rise building It is related to the construction of the steel structure and the ground structure of the steel structure to build the steel structure of the high-rise building by sequentially assembling the steel structure from the upper layer to the ground layer from the upper layer one by one.

The steel frame structure that is preceded to build a conventional high-rise building is mainly composed of a pair of beams and beams made of H-beams, and the construction method is to build a basement layer in advance, and then install a column vertically on the basement layer to form a column. It has been adopted to construct a beam for building the ceiling of the ground floor (1st floor) and the floor of the second floor, and then to assemble the beams of the second, third and top floors sequentially from the lower floor.

In order to assemble the beams sequentially from the ground floor as above, the tower crane is first placed in the center of the steel structure to be constructed, and then the beam is lifted by the jib crane installed at the top of the steel structure. In Korea, steel structures have been constructed by connecting and assembling bolts to vertically oriented columns at both ends of the beam by hand, and this construction method uses floor cranes that require expensive installation and operating costs.別) As it takes a lot of time to lift the H-beams that make up the columns and beams, the construction air of the steel structure is very long, and the beams lifted by the branch crane are assembled on the columns. Steel frame structure because the work must be done by hand The construction work was very difficult and difficult, which made the construction air longer, and above all, the construction worker's risk of assembling columns and beams increased from the lower floor to the conflict, which made the construction air longer. In addition to this, the fall accidents of the workers frequently occur, it was impossible to rule out the case of avoiding the assembly work of the steel structure.

The present invention has been created to solve the above-mentioned shortcomings, assembling work of the steel structure to be built on the ground from the top floor from the top floor by assembling the structure of high-rise building steel structure quickly and safely It was created with the emphasis on minimizing the induction of safety accidents while greatly reducing the construction air of a high-rise building constructed of steel structures by means of a device and a construction method, which will be described below in detail with reference to the accompanying drawings. Let's explain.

1 is an exemplary view showing the construction of steel structures in a high-rise state by assembling the steel structures from the uppermost floor to the ground floor as the hydraulic lifting means of the present invention by one floor height, and FIG. It is a top view which illustrates the arrangement of the hydraulic lifting means in each of the columns of the H-shaped steel.

As shown in the examples of FIGS. 1 and 2, each of the columns 1A constituting the column of the steel structure 1 is provided with hydraulic lifting means 10 in which four hydraulic cylinders 11 are bundled together. (10) Each is installed in the basement floor, specifically, is installed on the beam (Beam) of the first basement (B1).

The construction process of the ground layer steel structure of the present invention is carried out under the condition that the basement layer is first constructed as a temporary beam member, and at this time, the column 1A of the H-shaped steel, which is a column of the steel structure, when the basement is constructed, the hydraulic lifting means (10). The insertion space (S) of the column is formed in the basement layer so that it can be inserted from the lower side of the bottom), and the insertion space is welded under the hydraulic lifting means (10) by a column made of H-shaped steel having a length of about 8 to 10 m. It is a space for assembling, which allows the column to be continuously extended from the bottom, and the insertion space is a component that plays an important role in practicing the present invention.

The hydraulic lifting means 10 of the present invention is such that the front end portion (the portion where the piston is plunged) of the hydraulic cylinder 11 constituting it is located lower than the ground level 1 (F1), which is the ground layer reference, and the reason is ground level 1 This is to allow easy welding on the ground without lifting the beams when each beam of each layer constituting the beams of the upper layer at the bottom of the layer (F1) to the column.

The hydraulic lifting means 10 is composed of a lower fixing device (13a) is fixed to the upper portion of the hydraulic cylinder (11) as shown in the example of FIG. In addition, each of the lower fixing device and the upper elevating device is provided with through holes 14a and 14b into which the column 1A is inserted in the center, and a pair of pressure gripping holes for interposing the middle part of the column on each side of each through hole ( 15a, 15b and 16a and 16b are fixed.

The pair of pusher holes 15a, 15b and 16a and 16b are provided with a plurality of mounting protrusions so that no sliding phenomenon occurs when the middle part of the column is pressed from both sides, and the small hydraulic jack 17a ( 17b), (18a) (18b) in the lifting operation of the push-up port slides up and down on the inclined surface (19) formed on each inner surface of the lower fixing device and the upper elevating device, bite operation (abrasion operation) and release operation (release Operation), the pusher opening of the lower fixing device and the pusher opening of the upper lifting device are configured to operate in opposite directions to each other. In other words, when the pusher openings 16a and 16b of the upper elevating device 13b are released, the pusher openings 15a and 15b of the lower fixing device 13a are in a squeezing operation. It is configured to perform the release operations alternately with each other.

The construction method of assembling and welding the steel structure of a high-rise building on the ground by using the above-described device to increase the floors by one floor from the top floor will be described.

After constructing a multi-layer self-layer, the hydraulic lifting means 10 is installed in each of the columns 1A vertically extending from the first basement B1 to the ground. The through holes 14a of each hydraulic lifting means are provided. Column 14A penetrates through 14b and extends to the ground.

Each of the hydraulic lifting means (10) installed in the first basement (B1), the upper elevating device (13b) fixed to the front end of the hydraulic cylinder (11) constituting the piston 12 of the hydraulic cylinder 11 constituting it is completely ground 1 By maintaining the position slightly lower than the layer (F1), it is possible to conveniently perform the welding assembly of the beam to the column in the ground level 1 (F1), and also to seek simplicity in the welding operation on the ground level 1 Insertion space for fixing beam 1B welded on all sides of column 1A that extends to the ground at the same time to be free to walk by installing working scaffold 30 as a steel plate on the beam constituting the ground level 1 Provide (31).

As described above, in the state where the upper elevating device 13b is lowered below the insertion space 31 formed in the first floor F1 by the immersion operation of the piston 12, the insertion space 31 is moved into the H-shaped steel. The fixed beam 1B is inserted into all directions and fixed, and both ends are welded to the front, rear, left and right sides of the column 1A, and the beam 1B to be welded in this way is horizontal to the entire column constituting the steel structure. It is welded.

Each of the beams 1B to be welded in the horizontal state is provided with a horizontal gauge and the like at both ends thereof so that the entire number of beams welded on the ground level 1 layer F1 can maintain the same horizontal plane.

As described above, the beams 1B initially welded horizontally in the first layer F1 constitute the uppermost layer Fn of the steel structure 1, and the method of raising them will be described with reference to FIGS. 5 and 7. As shown in the example shown in Figure 1, the insertion space 31 formed in the ground layer 1 (F1) to the two ends of the beam (1B) in close contact with the four sides of the column and welded to increase the binding force than the beam assembly in the conventional column. When the welding and assembling of the beams is completed, the small hydraulic jacks 18a and 18b of the upper elevating device 13b fixed to the tip of the piston 12 of the hydraulic elevating means 10 are operated to push the pressure port 16a ( 16b) causes the middle part of the column to be pinched on both sides (refer to the phantom line in FIG. 4), and then immerses the piston of the small hydraulic jacks 17a and 17b of the lower fixing device 13a fixed to the hydraulic cylinder 11 body. Operation (ascending operation in the drawing: see the phantom line in Fig. 4) so that the pushing holes 15a and 15b are inclined. (19) is to move upward to release the narrow pressure, and when the piston 12 of the hydraulic cylinder (11) starts to operate up, the column (1A) is raised and at the same time the beam welded thereon ( 1B) also rises, and this synergy effect is that one layer of the steel structure is temporarily lifted because all the beams welded to all columns arranged on the ground level 1 (F1) are simultaneously raised at the same rising speed. Will rise.

In more detail with respect to the above-mentioned ascending operation, the level sensor is attached to all of the hydraulic lifting means (10) disposed in each column of the H-shaped steel, these level sensors are raised in the column and the beam by the piston During operation, it detects whether the rise speed, that is, the change in the rising position is the same, and automatically controls the hydraulic supply and shutoff to each of the hydraulic lifting means, so that the column and the beams welded to it are raised when the same level is maintained without bending. This synergism makes it possible to maintain the welding state as it is, so that the steel structure can maintain the strength required therefor.

On the other hand, assembling work of the steel structure as described above to prevent the safety accident to be carried out during the day, the ascending work is a very preferred method to shorten the air is mainly performed at night, about one meter high of the steel structure Ascending speed is set to about 10 to 12 hours to raise the height to maintain the accuracy and safety in the lifting operation of the steel structure.

As described above, the beam welded to the column on the ground floor is raised to a higher height, and then the small hydraulic jacks 17a and 17b of the lower fixing device 13a fixed to the hydraulic cylinder 11 body of the hydraulic lifting means. The piston of () is appeared (lowering), and the push-holes (15a) (15b) descend the inclined surface (19), and the mounting protrusions formed at the tip end of the column (1A) are pressed together at both sides to slide the column. To stop the action (falling action), and then immersion operation (rising operation) of the small hydraulic jacks 18a and 18b of the upper elevating device 13b settled at the tip of the piston 12. 16b) is to lift the inclined surface 19 to release the pinching action of the column, at this time by lowering the piston 12 so that the upper elevating device (13b) is located below the ground floor 1F (F) The beam 1B constituting the girder is welded at the ground level 1 F1. After the welding assembly of the beam of the next layer is completed, the operation of raising the hydraulic lifting means 10 again is repeated. Then, the next layer (Fn-1) as well as the next layer (Fn-2) ) To the ground level 2 (F2) to increase the steel structure gradually by floor height.

In addition, the step of vertically assembling the steel structure welded at the ground level 1 (F1) as the height of each floor as the hydraulic lifting means 10, the vertical assembly operation of the column (1A) is the insertion space formed in the basement layer (S: A new column, H-shaped steel, is welded against the bottom of the column, which is raised to the ground, and the column can be continuously extended from the basement to the height of the steel structure.

The present invention is carried out after the construction of the basement in the construction of steel structures of high-rise building, the insertion space that can insert the HH section steel of about 8 to 10m under the hydraulic lifting means installed in the basement 1 floor. Also, each beam assembly insertion space for connecting columns of H-beams arranged at a certain distance on the ground floor is arranged horizontally, and the upper lifting device of the hydraulic lifting means is placed on the ground floor. After welding the beams on all sides of the column vertically extended to the ground in the state of being placed under the beams, raise the previously welded beam to one level by gradually raising the column by means of yuan raising means. Under the state of catching, lower the upper elevating device of the hydraulic elevating means to the ground floor, and then after welding the beam from above the upper elevating device, The steel structure can be constructed by the method of repeating the welding assembly and raising operation from the uppermost part to the lowermost part as a means of repeating the raising method, and the hydraulic lifting means in the present invention. It is possible to achieve the object of the present invention even if it is not limited to the height of the steel frame structure once and once, and the number of times, once or two times the piston.

And in the implementation of the present invention as described above, the construction method of the steel structure of the multi-layered basement layer to be constructed first, the construction air of the basement steel structure by applying the construction method to raise by installing the hydraulic lifting means like the present invention in the bottom basement After the construction of the basement steel structure, it forms the basis for building the steel structure of the ground floor. In this case, as mentioned above, a temporary beam that can place hydraulic lifting means in the basement 1 floor. At the same time, an insertion space for vertically inserting the column under the hydraulic lifting means should be provided.When the construction of the steel structure on the ground floor is completed, the hydraulic lifting means and the temporary beam member installed on the first basement are removed. In addition, the insertion space of the column is a means of constructing the column according to the structure of the basement layer. You can fill it up.

Enumerating the advantages of the present invention as described above, First; By welding the beam of H-shaped steel in the first layer, the assembly time of the beam can be shortened; As the worker performs all the work on the ground, it creates a very safe working condition without any fall accident. Welding and assembly of columns and beams is carried out during the day, and the ascending work of the assembled steel structures can be carried out at night. All these conditions are characterized by significantly reducing the construction air of the ground layer steel structures. It is an innovative construction method that can contribute to a significant reduction in the construction cost of a structure, as well as to significantly reduce the construction cost of a high-rise building.

Claims (3)

The uppermost part of the steel structure of high-rise building is welded and assembled on the first floor, and then the upper layer is constructed by using a hydraulic mechanism. Then, the second floor is constructed between the first floor and the top floor, and then the top floor is raised again. An elevation device for constructing a steel structure while raising only the uppermost part from the first floor to the top floor with a configuration of constructing the third floor above the ground above the second floor and the top floor. A pair of pusher openings for installing and enclosing each column constituting the column, the pair of pusher pins for holding and releasing the column by a pair of small hydraulic jacks inside the lower fixing device fixed to the hydraulic cylinder body of the hydraulic lifting means; The hydraulic cylinder side small hydraulic jack and the piston front side small hydraulic jack are provided with a pair of pusher ports for holding and releasing the column by a pair of small hydraulic jacks inside the upper lifting device fixed to the piston tip of the hydraulic lifting means. Alternating the operation of pressing and releasing the column, the steel structures are constructed in the reverse order from the top floor to the bottom floor (2 floors above ground) in the reverse order, and then the entire steel structures built on the ground floor 1 The ground layer steel structure lift device of a high-rise building, characterized in that configured to increase to the floor height. The uppermost part of the steel structure of the high-rise building is welded and assembled on the ground floor, and then the upper layer is constructed using a hydraulic mechanism. Then, the ground floor is constructed between the ground floor and the uppermost part, and then the uppermost part is raised again. In the method of constructing the steel structure by raising only the uppermost part from the first floor to the top floor by the method of constructing the three floors above the ground and the top floor, the hydraulic lifting means is settled in the basement 1 floor after the basement of the steel structure is constructed. After assembling the uppermost part of the ground floor by welding, the uppermost part is raised to the ground level of the second floor by means of hydraulic lifting means, and then a next layer corresponding to the uppermost part of the ground floor is constructed. Weld assembly in order from the top floor to the bottom floor (corresponding to the second floor above ground) in the first floor above the ground by raising the floors together. And how; High-rise building, characterized in that to construct the steel structure of the high-rise building by raising from the ground floor by using the entire steel structure to be built in the order of floors from the first floor to the lowest floor in the ground floor as a hydraulic lifting means Structural method of steel structure of ground layer The column of claim 2, wherein the column of the steel structure is inserted into the ground and ground layers in a state in which the hydraulic lifting means settled in the basement 1 layer raises the multi-layered steel structure sequentially welded from the uppermost layer on the ground level 1 layer. A construction method for the ground layer steel structure of a high-rise building, characterized in that the construction of the steel structure of the high-rise building by inserting a beam and a column into the space by welding and connecting.