JP3345395B2 - Elevator tower construction method - 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 constructing an elevator tower after completing a building or during the construction process.

[0002]

2. Description of the Related Art Conventionally, in a reinforced apartment house to which no elevating equipment is added, entrances of dwelling units on each floor are faced to each other via a shared floor, and a space between the upper floor and the lower floor of the shared floor is used. Are connected by upper and lower stairs having different directions, and a landing is provided at an intermediate portion of the stairs. A handrail is provided at the landing, and the outside can be seen through the handrail. Conventionally, when increasing and lowering equipment is added to such an apartment house, after removing the stairs by hanging work, the elevator shaft is gradually built from the lower layer to the upper layer, and the elevator basket etc. The elevator tower is expanded by storing the elevator equipment and finishing the interior and exterior of the elevator shaft.

[0003]

However, in the above-described conventional method of expanding an elevator tower, the stairs must be removed, so that no dwelling units can be used, or a temporary building to be used until the expansion is completed. Since the stairs must be installed, the residents may be inconvenienced in living, and the cost of adding temporary stairs is high. Also, after assembling columns, beams, etc. at the site, gradually constructing the elevator shaft from the lower layer to the upper layer, the elevator shaft is housed inside the elevator shaft, and elevator equipment such as elevator cages is housed. Therefore, the construction of the elevator tower not only takes a long time, but also has to secure a large safe space where no entry is allowed over this long time.

The present invention has been made to solve such a problem, and it is an object of the present invention to provide a method in which an elevator tower can be constructed in a short period of time without having to remove a stair portion, and the construction cost can be reduced. It is.

[0005]

According to the method for constructing an elevator tower according to the present invention, a tubular elevator shaft having an entrance corresponding to each floor of a building is manufactured in advance.
After the completion of the building or during the construction process, this elevator shaft is vertically erected and fixed, and the elevator tower construction method in which the entrance and exit of the elevator shaft are connected to each floor above
There are both upper and lower sides of the elevator shaft
Protruding parts are provided on both sides of
And connect the lower end of the wire to this protrusion,
Be careful not to touch the outside of the elevator shaft.
Holding the upper end was so that hanging the elevator shaft. Further, the entrance of the elevator shaft is communicated with the landing of the stairs connecting each floor. Before the elevator shaft is built, elevator equipment such as a guide rail of a lifting cage, a lifting cage, and a hoist are previously incorporated into the elevator shaft . Also, each of the above
The same length as the distance between the tips of the protrusions
Use the hanging beam to hold the top of the wire
The elevator shaft so that it does not touch the elevator shaft.
The shaft was suspended.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 are simplified structural diagrams for explaining a method of constructing an elevator tower according to an embodiment. In each of the drawings, reference numeral 1 denotes a building such as a reinforced apartment house to which no lifting equipment is added. , This is the entrance 1m of each dwelling unit 1a, 1b, 1m comrades are shared floor 1n
The upper and lower common floors 1n, 1n are connected by upper and lower stairs 1c, 1c having different directions, and a landing 1d is provided at an intermediate portion between the stairs 1c, 1c. . A handrail 1e is provided in the landing 1d, and the outside can be seen through the handrail 1e. In the present embodiment, a scheduled position A outside the front part of the handrail 1e.
The elevator shaft 2 is built in the vehicle. The elevator shaft 2 is manufactured in advance at a factory or the like.

FIG. 4 shows the structure of the elevator shaft 2 built in the present embodiment. In FIG. 4, 70 is a lifting basket,
Reference numeral 60 denotes a guide rail of the elevator cage 70, 61 denotes a board for attaching the guide rail 60, 62 denotes a main pillar such as an H-shaped steel constituting a shaft frame 620 of the elevator shaft 2, 63 denotes an exterior board, and 64 denotes a board for each floor. Doorway, 2a
Is a Chianti beam for making a passage. As shown in FIG. 5A, the elevator shaft 2 is manufactured by first connecting four main columns 62 with horizontal columns 62a such as H-section steel.
Reinforce the sides with reinforcing beams, braces, etc. (not shown)
A square pillar-shaped shaft frame 620 is manufactured. next,
As shown in FIG. 5B, the board 31 is attached to the inside of the shaft frame 620 except for the entrance 64 side, and ascending and descending equipment such as the guide rail 60, the elevator cage 70, and the hoist 80 are assembled. After that, as shown in FIG. 5C, outside the shaft frame 620, except for the entrance 64 side,
The exterior board 63 is attached to finish the exterior, and further, the chianti beam 2a is attached. As a result, the elevator equipment is preliminarily installed inside the elevator shaft 2, and the elevator shaft 2, which has the entrance 64 corresponding to each floor of the building 1 and has the cantilever beam 2a attached thereto in advance, that is, the present embodiment. And an elevator shaft 2 for constructing an elevator tower is manufactured.
The guide rail 60 may be attached to the horizontal column 62a via a bracket or the like. Further, the guide rail 60 may be attached to the horizontal column by separately providing a dedicated horizontal column for mounting the guide rail 60.

[0008] As shown in FIG. 2, the elevator shaft 2 is to be erected at a site A where the elevator shaft 2 is to be erected.
It is built in In this case, the ground 3 at the planned installation position A of the elevator shaft 2 is excavated as shown in FIG. 6, the foundation unit 30A is arranged in the excavation hole 3s, and the elevator tower foundation 30 is constructed. By building the elevator shaft 2 with respect to 30, the number of elevator towers can be increased as shown in FIG. The procedure for constructing the foundation 30 will be described in detail with reference to FIG. First, as shown in FIG. 6, the ground 3 at the planned installation position A of the elevator shaft 2 is excavated, and discarded concrete 30a is poured into the bottom of the excavation hole 3s. The manufactured bottom reinforcement 30b is carried in and installed on the discarded concrete 30a. Then, the manufactured basic unit 30A is carried in, and as shown in FIG. 6, installed on the discarded concrete 30a and the bottom reinforcement 30b, and the level is adjusted. The base unit 30A is formed in a cylindrical shape by surrounding four pillars 30c with a concrete frame 30d.
A joint 31 with the lower end of the elevator shaft 2 is provided at the upper part of the pillar 30c. Then, as shown in FIG. 6, the concrete is poured into the portion of the bottom reinforcement 30 b to form the bottom slab concrete 30 e,
After integrating the foundation unit 30A on the discarded concrete 30a, the soil 30 is inserted into the excavation hole 3s so that the joint 31 provided on the upper side of the foundation unit 30A is exposed.
By backfilling f etc., the foundation 30 of the elevator tower is constructed. Therefore, as described later, when the lower end side of the elevator shaft 2 is joined to the base unit 30A, since the joining portion 31 of the base unit 30A is exposed to the ground, the work of joining the elevator shaft 2 to the base unit 30A is performed. Can be easily performed. In the above description, the foundation composed of the foundation unit 30A, the bottom reinforcement 30b and the bottom slab concrete 30e is constructed on site on the waste concrete 30a. However, the foundation unit 30A, the bottom reinforcement 30b and the bottom slab concrete 30e are constructed. The foundation is manufactured in advance in a factory or the like, and the precast foundation is carried into the site, a concrete 30a is disposed at the bottom of the excavation hole 3s, and the carried foundation is put into the excavation hole 3s. The foundation 30 may be constructed by arranging and backfilling as described above. In this case, the on-site work in the foundation construction can be reduced.

The outline of the construction work is as follows: a joint 32 provided at the lower end of the elevator shaft 2 and a joint 31 of the base unit 30A are joined by a high-strength bolt joint 33 or the like by a method described later with reference to FIG. The elevator shaft 2 is connected to the base unit 30A, and the tip of the cantilever 2a is connected to the tip of the landing 1d by means not shown in the figure. 3 (that is, two cantilever beams 2a, 2a provided in the direction of the paper surface of FIG. 3 corresponding to each floor).
2a), a floor material such as a slab is attached to form a communication passage between the entrance and exit 64 of the elevator shaft 2 and the building 1, and the side portion of the chianti beam 2a is covered with a side wall to complete the process. Before the building, as shown in FIG. 2, the leading side of the landing 1d is covered with the vertical curing panel 6, the handrail 1e is dismantled and removed, and the temporary handrail 7 is attached at the same position. And Therefore, as shown in FIG.
After the building, the temporary handrail 7 is removed to allow communication between the landing 1d and the chianti beam 2a. Here, the elevator shaft 2 has a guide rail 60 and a lifting basket 7 in advance.
0, since hoisting equipment such as hoisting machine 80 is installed,
After the elevator shaft 2 is installed, it is not necessary to carry in these elevator facilities and assemble them. For this reason, after the elevator shaft 2 is installed, it is not necessary to suspend the elevator basket 70 and the like from above the elevator shaft 2 by using a crane, so that it is possible to reduce the construction labor and cost on site, and to shorten the construction period. .

[0010] Before the building, the floor material such as the slab may be attached between the cantilever beams 2a before the building.

FIG. 7 (FIG. 7 (b) is a front view,
7A is a left side view, and FIG. 7C is a right side view.
The method of suspending the elevator shaft 2 when the elevator shaft 2 is installed will be described with reference to FIG. First, in a factory, the elevator shaft 2 as described above is manufactured.
The elevator shaft 2 is transported to a site by a truck or the like, and the elevator shaft 2 is placed horizontally on the gantry 10a, 10b located at the front and rear of the site as shown in FIG. 7 (b). Since the cantilever 2a is previously attached to the elevator shaft 2 at the factory, there is no need to attach it at the site after the elevator shaft 2 is built. Therefore, since it is not necessary to form a scaffold or the like and perform welding or the like, it is possible to reduce labor and cost for construction on site and shorten the construction period. Moreover, it is not necessary to perform dangerous work using the scaffold. FIG. 7 shows an example in which the elevator shaft 2 is erected from a state in which the elevator shaft 2 is placed horizontally so that the side on which the cantilever beam 2a is provided faces the ground 3 side. You may make it erect from the state where it laid sideways so that it might turn to the side.

However, when the cantilever beam 2a hinders the transportation, the cantilever beam 2a may be assembled on site to construct the elevator shaft 2, and then installed.

As shown in FIGS. 7 (b) and 7 (a), reference numeral 11 denotes a top lifting portion formed of a long frame attached to the top of the elevator shaft 2, and extends in a direction perpendicular to the direction in which the chianti beam 2a projects. At both ends thereof, a predetermined dimension protrudes from the side of the elevator shaft 2, and two top suspension wires 13 a, 13 a
The lower end of a is connected, and the upper ends of the top suspension wires 13a, 13a are connected to both ends of the top suspension beam 14. The top suspension beam 14 has approximately the same length as the top suspension section 11, and both ends thereof are connected to wires 16a, 16a of the left and right electric chain blocks 15a, 15a. As shown in FIGS. 7B and 7C, a lower lifting portion 17 formed of a long frame extending in the width direction is fixed to a slightly lower portion on the back side of the elevator shaft 2. Both ends of the lower lifting portion 17 project from the side portion of the elevator shaft 2 by a certain distance, and the lower ends of two lower hanging wires 19a, 19a are connected to the tips of the projections 18, 18, respectively. The upper end of 19 a is connected to both ends of a lower suspension beam 20 having a length similar to that of the lower lifting section 17. Both ends of the lower suspension beam 20 are connected to wires 22 of a central electric chain block 21. The electric chain blocks 15a, 15a, and 21 are commonly attached to a lifting member 23, and the lifting member 23 is lifted by a crane (not shown) via a wire 24.
The mounting position of the top lifting section 11 is positioned slightly below the center of the top in consideration of the load of the cantilever 2a so that the elevator shaft 2 can be balanced vertically when installed. Reference numeral 25 denotes a power supply unit of the electric chain block.

According to the above configuration, at the construction site,
As shown in FIGS. 8A to 8C, after removing the vertical curing panel 6, the electric chain hoist 23 is held in a state in which the lifting material 23 is held at a certain height via the wire 24 by a crane (not shown). The elevator shaft 2 is gradually raised from a horizontal state to a vertical state by winding up the wires 16a, 16a with the wires 15a, and lowering the wire 22 of the electric chain block 21 with the wires 15a, 15a. Therefore, at the time of lifting, the lifting portions 11 and 17 projecting in the lateral direction are provided on both sides on the top side and both sides on the lower side of the elevator shaft 2, respectively, and the projections 12 and 18 of the lifting portions 11 and 17 are provided. Since the lower ends of the suspension wires 13a and 19a are connected to be lifted, the elevator shaft 2 can be built in a stable state. In addition, the suspension wire 13
a and 19a are the suspension beam 14 and the suspension beam 20, respectively.
Are connected to the elevator shaft 2 via the elevator shaft 2 so that the suspension wires 13a and 19a
Does not contact the outside of the elevator shaft 2 and does not damage the finishing material such as the exterior board 63 of the elevator shaft 2. In the lifting mechanism on the upper side of the elevator shaft 2, the suspension beam 14 may be lifted by one wire and one electric chain block. Even in this case, the finishing material such as the exterior board 63 of the elevator shaft 2 may be used. Does not hurt. Next, as shown in FIGS. 8 (c) to 8 (f), the temporary enclosure panel 34 is erected around the lower side of the elevator shaft 2 and guarded, as shown in FIGS. Part 31 and elevator shaft 2
After adjusting the verticality of the elevator shaft 2 with the joint 32 provided at the lower end of the elevator shaft, the elevator shaft 2 is connected to the foundation 30 by a high-strength bolted joint 33 or the like, and the surrounding area is subjected to exterior wall finishing work. Close by. Also, the tip of the cantilever 2a is brought into contact with the tip of the landing 1d, and the two are joined by a fixing means (not shown), a floor material is attached between the cantilever 2a, and both sides of the cantilever 2a are closed with side walls. By setting the lifting machine inside the elevator shaft 2, the elevator shaft 2 can be added. Also, after the completion of the extension of the elevator shaft 2,
The lifting portions 11 and 17 may be removed, and the exterior of the removed portion may be finished to improve the appearance. Thus, the construction of the elevator tower is completed.

As shown in FIG. 9, the present invention is applied to a case where a stairway 43 is provided on a side of a building 42 such as an apartment house provided in front of a dwelling unit 41 in which a corridor 40 is arranged side by side. , The elevator shaft 2 is built next to the stairs 43, and the elevator shaft 2 is placed on the floor 45 side of the common floor 44.
The tip of the cantilever 2a projecting from the stairs is connected, or the cantilever 2a of the elevator shaft 2 is directly connected to the corridor 40, or the tip of the cantilever 2a is connected to the landing 43a provided at the center of the stairs 43. May be.

Also, as shown in FIG.
4, the lifting portions 11 and 17 may be lifted by two wires and one electric chain block, respectively, without using the lifting beam 20. Even in this case, the posture of the elevator shaft 2 is stabilized. It can be erected and does not damage finishing materials such as the exterior board 63 of the elevator shaft 2.

In the above description, a communication path is formed by attaching a floor material such as a slab between the cantilever beams 2a, 2a attached to the elevator shaft 2 side. However, as shown in FIG.
A floor material is attached between the cantilever beams 2a, 2a to form a passage 2X on the elevator shaft 2 side, and a floor material such as a slab 2b projecting from each floor of the building 1 is provided to form a building side passage 2Y. The communication passage 2Z may be configured by the elevator shaft side passage 2X and the building side passage 2Y. In this case, the elevator shaft 2 and the building 1 are structurally separated from each other by, for example, interposing an expand joint at a connecting portion between the elevator shaft side passage 2X and the building side passage 2Y. 2c is an angle bracket for holding the projecting slab 2b. According to this, the elevator shaft-side passage 2X and the building-side passage 2Y can be constructed with a small slab, and the stress load on the elevator shaft 2 due to the floor material such as the slab is reduced. Further, an effect is obtained that the projecting slab 2b on the building 1 side can be used as a temporary scaffold. As the slabs constituting the elevator shaft side passage 2X and the building side passage 2Y, a precast concrete plate, a concrete plate integrated with a deck, a metal plate such as a steel plate, and other floor panels made of a single body or a composite body are used. be able to. In addition, the spring slab 2b,
The angle bracket 2c is manufactured in advance at a factory or the like, carried into the site, and attached after the elevator shaft 2 is installed.

Further, in the above description, the elevator shaft 2 in which the elevating and lowering equipment is previously incorporated is carried into the site and built therein. However, the elevator shaft and the elevating and lowering equipment are separately carried into the site and before the elevator shaft is built. Alternatively, the elevator shaft 2 incorporating the elevating equipment may be built.

The lifting equipment such as the lifting cage 70 and the hoisting machine 80 may be damaged if it is installed in an elevator shaft at a factory or the like and then transported to the site, so that the guide rail 60 and the like are less likely to be damaged. Only lift equipment should be incorporated into the elevator shaft at factories, etc.
This may be transported to the site, and other lifting equipment such as the lifting cage 70 and the hoisting machine 80 may be assembled at the site. In this way, since at least the guide rails 60 are pre-attached, the work of mounting the guide rails on site is omitted, and the guide rails 60 are mounted at a factory or the like.
The mounting accuracy of the guide rail 60 can be improved. In addition, there is less possibility that the lifting equipment such as the lifting basket 70 and the hoisting machine 80 will be damaged. Further, after the elevator shaft in which the guide rail 60 is incorporated in advance is built, the elevator basket 7 is installed.
If the elevator equipment such as the hoisting machine 0 and the hoist 80 is mounted on the elevator shaft, the work of mounting the guide rails on site can be omitted, the mounting accuracy of the guide rails 60 can be improved, and the weight of the elevator shaft at the time of installation can be improved. Is reduced, and the installation work becomes easier.

In the case where the height of the elevator shaft 2 is too high and it is necessary to divide the elevator shaft 2 in terms of transportation or lifting weight, or when there is not enough space for erection at the installation site of the elevator tower, The above elevator shaft 2
May be divided in advance and the divided elevator shafts may be carried to the site and assembled to construct an elevator tower. For example, a method of manufacturing an elevator shaft 2 in which the elevator shaft 2 is divided into two parts in advance at a factory or the like, and carrying them into the site and assembling them will be described with reference to FIGS. In FIG. 12, the illustration of the chianti beam 2a is omitted. First, the foundation 30 is constructed, and the joining portion 32 at the lower end of the divided elevator shaft 2A constituting the lower portion of the elevator shaft 2 is matched with the joining portion 31 of the foundation unit 30A of the foundation 30, and joined by high-strength bolt joining or the like. To build the divided elevator shaft 2A. Next, the elevator basket 7 is placed in the built divided elevator shaft 2A.
0 is inserted, and the weight of the lifting basket 70 is given to the guide rail 60. Thereafter, the divided elevator shaft 2B constituting the upper part of the elevator shaft 2 is connected and joined on the divided elevator shaft 2A. Then, around the joint 35 between the divided elevator shaft 2A and the foundation 30 and around the joint 36 between the divided elevator shaft 2A and the divided elevator shaft 2B by exterior finishing work, the divided elevator shafts 2A and 2B are finished.
The elevator tower with the elevator shaft 2 constituted by the above is completed. Although FIG. 12 illustrates the case of two divisions, the number of divisions may be any number. In addition, while the elevator cage 70 is installed in the divided elevator shaft constituting the lowermost part, the divided elevator shaft of the lowermost part may be erected, but in this case, the temporary elevator cage 70 is temporarily mounted. Device is required. Therefore, as described above, after the divided elevator shaft constituting the lowermost portion is erected, the elevator cage 70 is placed in the divided elevator shaft.
It is preferable that the weight of the elevator cage 70 be put into the guide rail 60 in the divided elevator shaft so that a device for temporary receiving becomes unnecessary, the cost can be reduced, and the work becomes easier.

[0021]

As described above, according to the present invention, it is not necessary to remove the stairs, the elevator tower can be constructed in a short time, the construction cost can be reduced , and the elevator shaft can be reduced. Hurt the exterior finishing material
Elevator shaft can be built without turning
From the erecting of the elevator shaft
Elevator shaft with wire until installation in position
It becomes so that can remain in the lifting state. In addition to the above effects, according to the third aspect of the invention, it is possible to reduce the labor and cost for construction on site .

[Brief description of the drawings]

FIG. 1 is a plan view of an apartment house in which an elevator tower is added by a method according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a positional relationship between an apartment house and an elevator tower that is added by the method according to the embodiment;

FIG. 3 is a diagram showing an apartment house and an elevator tower added by the method according to the embodiment;

FIG. 4 is a perspective view of an elevator shaft.

FIG. 5 is a diagram illustrating a manufacturing process of the elevator shaft.

FIG. 6 is a diagram illustrating a construction process of an elevator tower foundation.

FIG. 7 is a diagram showing a state before the elevator shaft is lifted.

FIG. 8 is a diagram showing a process of lifting and setting up the elevator shaft.

FIG. 9 is a diagram showing another embodiment of the present invention.

FIG. 10 is a diagram showing another embodiment of the present invention.

FIG. 11 is a diagram showing another embodiment of the present invention.

FIG. 12 is a diagram illustrating a construction process of an elevator tower using a divided elevator shaft.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Building, 2 elevator shaft, 2A, 2B split elevator shaft, 2a Chianti beam, 2X elevator shaft side passage, 2Y building side passage, 2Z
Communication passage, 3 ground, 3s excavation hole, 11,17 lifting part, 12,18 projecting part, 14,20 suspension beam,
5a, 21 Electric chain block, 13a, 16a,
19a, 22 wires, 30 foundations, 30A foundation unit, 31 joints.

Continued on the front page (72) Inventor Ken Fujiwara 2-1 Tsukudo-cho, Shinjuku-ku, Tokyo Co., Ltd. Kumagaya Gumi Tokyo Head Office (72) Inventor Hironori Hano 2-1 Tsukudo-cho, Shinjuku-ku, Tokyo Co., Ltd. Kumagaya Co., Ltd. Gumi Tokyo Headquarters (72) Katsuhiko Kinoshita, Inventor 2-1 Tsukudocho, Shinjuku-ku, Tokyo Kumagaya Gumi Tokyo Headquarters (72) Inventor Masanori Nagano 2-1 Tsukudocho, Shinjuku-ku, Tokyo Co., Ltd. Gumi Tokyo Head Office (72) Inventor Masato Imari 2-1 Tsukudo-cho, Shinjuku-ku, Tokyo Kumagaya Gumi Tokyo Head Office (56) References JP-A-8-282944 (JP, A) JP Akira 58-172180 (JP, A) JP-A-61-188381 (JP, A) JP-A-9-315724 (JP, A) JP-A-11-159153 (JP, A) JP-A-8-217359 (JP, A A) JP-A-5-310381 (JP, A) JP-A-10-25072 (JP, A) JP-A-8-143245 (JP, A) JP-A-7-23776 (JP, U) (58) Survey Minutes (Int.Cl. ^7, DB name) B66B 7/00 - 7/12

Claims (4)

(57) [Claims] 1. A cylindrical elevator shaft having an entrance corresponding to each floor of a building is manufactured in advance, and the elevator shaft is vertically erected and fixed after completion of the building or during the building process. The construction method of the elevator tower with the entrance of
The upper and lower sides of the elevator shaft.
Provide side projections on each side,
Connect the lower end of the wire to the protrusion of
The upper end of the wire so that it does not touch the outside of the
A method for constructing an elevator tower, wherein the elevator shaft is suspended while being held . 2. The method according to claim 1, wherein an entrance of the elevator shaft communicates with a landing of a stair connecting the floors. 3. Before the elevator shaft is installed,
3. The method for constructing an elevator tower according to claim 1 or 2, wherein the elevator shaft is provided with in advance lifting equipment such as a guide rail of the lifting cage, a lifting cage, and a hoist. 4. Each projecting portion projecting in the lateral direction.
Of the wire using a suspension beam of the same length as
Holding the upper end allows the wire to contact the elevator shaft.
It is characterized by hanging the elevator shaft so that it does not touch
The elevator according to any one of claims 1 to 3,
Construction method of data tower.