JP5402508B2 - Lift-up method, tower-like structure construction method, building construction method, lift-up device - Google Patents

Description

  The present invention relates to a method for lifting a structure, and a tower-like structure and a building construction method using the lift-up method.

  Conventionally, as a method for constructing a tower-like structure, the lower structure constituting the lower part of the tower-like structure is constructed in a hollow shape, and the upper structure constituting the upper part of the tower-like structure is constructed inside the lower structure, A lift-up method is used in which the upper structure is lifted up (pushed up) above the lower structure with a jack, and the lower portion of the upper structure is connected to the upper portion of the lower structure.

  As such a lift-up method, for example, in Patent Document 1, a double-structured tower in which an internal frame is formed inside an external frame and a gain tower is connected to the upper part is constructed as a base portion of the external frame. At the same time, the top of the gain tower and tower upper component (inner frame and outer frame) is built inside, and the tower upper component is lifted up while applying a reaction force to the base of the outer frame, and then lifted up. Repeat the steps of connecting a new tower upper component below the tower upper component and lifting the tower upper component while applying a reaction force to the base of the external frame. Built from above, an internal frame that constitutes the base is integrally constructed below the tower upper component constructed above, Component and an external frame, a method for constructing a tower-like structure by connecting the outer frame of the base portion is described.

JP 2008-69567 A

  Here, when lifting the structure as described above, a jack is installed on the upper part of the base part of the external frame, and a suspension member such as a PC steel wire is connected to the uppermost part of the upper part of the tower that has been constructed. Then, the lifting member is lifted up by lifting it with a jack. For this reason, as a suspension member, what has the length more than the height which lifts up is needed. However, when constructing a high-rise structure, a long PC steel wire has to be used as a suspension member, and there is a problem that the cost increases.

  Therefore, it is conceivable to lift up in multiple times in order to lift up using a PC steel wire shorter than the height to be lifted up. In this way, when lifting up in a plurality of times, it is necessary to change the jacks on the way. That is, a structure is lifted up to an intermediate height via a first suspension member by a first jack provided at an intermediate portion of the outer frame, and then the structure is constructed via a first suspension member by a first jack. In a state where an object is suspended, a second jack is provided at the upper end portion of the outer frame, the structure is suspended via the second suspension member by the second jack, and lifted up to a predetermined height. Become.

  However, in the method of lifting up in a plurality of times, a plurality of jacks are required as described above, so that the cost is still high. Further, when a plurality of pairs of jacks and suspension members are provided in this way, it is necessary to prevent the first and second suspension members from interfering with each other, and therefore, this is applied only when there is a wide space inside the external frame. I can't.

  The present invention has been made in view of the above-described problems, and its purpose is to replace a lifting device without using a plurality of lifting devices such as jacks when lifting a structure multiple times. Is to be able to work.

  The lift-up method of the present invention is a method for lifting a lift-up object by applying a reaction force to a support structure provided in the vicinity of the lift-up object, the lower end of the support structure being lifted up. Elevating device installation step for installing an elevating device capable of elevating and lowering the lift-up object via a suspending member connected to the object, and a gripping device connected to the lower side of the elevating device and capable of grasping the suspending member And a first lifting step of lifting the lift-up object via the suspension member by taking a reaction force on the support structure by the lifting device, and gripping the suspension member by the gripping device, In a state where the lift-up object is suspended via the suspension member, the lifting device moving step of moving the lifting device upward and installing it on the support structure; A reordering step of suspending the lift-up object through the suspension member by the moved lifting device; and a reaction force applied to the support structure by the lifting device, and the lift-up object through the suspension member. And a second lifting step for lifting. In the lift-up method, the lifting device moving step, the refilling step, and the second lifting step may be repeated a plurality of times.

  The tower-like structure construction method of the present invention is a method for constructing a tower-like structure comprising a tower body formed in a cylindrical shape and an antenna tower having a lower end connected to the top of the tower body. A tower body construction step for constructing the tower body, an antenna tower construction step for constructing the antenna tower inside the tower body, and the antenna tower while the reaction force is applied to the tower body. A lift-up step that lifts the antenna tower until it protrudes from the tower, and a connection step that connects the lifted antenna tower to the tower body. In the lift-up step, a reaction force is applied to the tower body by the lift-up method described above. However, the antenna tower is lifted.

  In the tower-like structure construction method, the tower body construction step includes a first tower body construction step of constructing a portion lower than a predetermined height of the tower body, and higher than the predetermined height of the tower body. It is comprised by the 2nd tower main body construction step which constructs | assembles a part, You may perform the said 2nd tower main body construction step and the said antenna tower construction step in parallel.

  The building construction method of the present invention is a building construction method in which an upper structure is supported on an upper part of a lower structure, and a lower structure construction step for constructing the lower structure, and the upper structure is constructed. An upper structure constructing step, a lift-up step for lifting the upper structure upward while taking a reaction force on the lower structure, and a connecting step for connecting the upper structure to the upper portion of the lower structure. In the up step, the upper structure is lifted by applying a reaction force to the lower structure by the lift-up method described above.

  The lift-up device of the present invention is a device that lifts up a structure. The lift-up device can lift and lower the structure via a suspension member connected to the structure by taking a reaction force on the support structure. And a holding device connected to the lower side of the lifting device and capable of holding the suspension member by applying a reaction force to a support structure.

  According to the present invention, by connecting the holding device below the lifting device in advance, when changing the lifting device, the holding member is held by the holding device, so that the structure can be moved via the hanging member. Can be hung. Thus, since the lifting device can be moved, even if lift-up is performed in a plurality of times, the lifting-up operation is performed with a single lifting device by performing the remounting work of the lifting device. be able to.

It is a figure which shows the tower-like structure constructed | assembled by the construction method of this embodiment. It is FIG. (1) for demonstrating the construction method of a tower-like structure. It is FIG. (2) for demonstrating the construction method of a tower-like structure. It is FIG. (3) for demonstrating the construction method of a tower-like structure. It is FIG. (4) for demonstrating the construction method of a tower-like structure. It is FIG. (5) for demonstrating the construction method of a tower-like structure. It is FIG. (6) for demonstrating the construction method of a tower-like structure. It is FIG. (7) for demonstrating the construction method of a tower-like structure. It is FIG. (8) for demonstrating the construction method of a tower-like structure. It is FIG. (9) for demonstrating the construction method of a tower-like structure. It is FIG. (10) for demonstrating the construction method of a tower-like structure. The structure of a lift-up apparatus is shown, (A) is a front view, (B) is II-II sectional drawing in (A), (C) is II sectional drawing in (A). It is FIG. (1) for demonstrating the replacement method of an raising / lowering apparatus. It is FIG. (2) for demonstrating the replacement method of an raising / lowering apparatus. It is a figure which shows embodiment at the time of applying this invention, when building the building which consists of a building main body and the observation deck provided in the upper part of the building main body. It is a figure which shows embodiment at the time of applying this invention when constructing a gymnasium.

Hereinafter, the case where one embodiment of the structure lift-up method of the present invention is applied when a tower-like structure is constructed will be described as an example.
FIG. 1 is a diagram showing a tower-like structure 10 constructed by the construction method of the present embodiment. As shown in the figure, a tower-like structure 10 constructed by the method of the present embodiment includes a tower main body 20 constructed in a cylindrical shape extending in the vertical direction, and a gain tower 30 connected to the upper end of the tower main body 20. It consists of. An upper observation room 40 is provided below the gain tower 30 of the tower-like structure 10, and a central observation room 50 is provided at a position lower than the upper observation room 40.

  The gain tower 30 is formed by connecting a plurality of cylindrical truss frames up and down, and protrudes from the tower main body 20 as compared with a part (hereinafter referred to as a fixing part) 30B fixed in the tower main body 20. It is formed so that the diameter of the portion 30A (hereinafter referred to as the tip portion) is small. Various antennas such as a parabolic antenna and a television antenna are attached to the outer peripheral surface of the upper portion of the gain tower 30. A lower facility 30C such as a staircase is connected to the lower portion of the gain tower.

  The steel tower body 20 is composed of a steel truss frame formed in a cylindrical shape whose diameter decreases upward. For convenience of explanation, the lower part of the tower body 20 than the upper part of the central observation room 50 is referred to as the lower part 20B, the higher part is referred to as the upper part 20A, and the gain tower above the upper observation room 40. A portion where 30 is fixed is referred to as a fixing portion 20C.

Hereinafter, the construction method of the tower-like structure of the present embodiment will be described with reference to FIGS. 2A to 2J.
First, the main body lower part 20B is constructed upward from the ground height. That is, first, the lower layer portion of the main body lower portion 20B is constructed by assembling a steel frame while lifting the steel frame with a crane installed on the ground. Next, a tower crane is installed in the low-rise part of the main body lower part 20B constructed as described above. Then, by repeating the steps of connecting the steel frame lifted by the tower crane to construct the main body lower portion 20B and raising the tower crane while taking a reaction force on the constructed main body lower portion 20B, the main body lower portion 20B is Build upwards.

  After constructing the main body lower part 20B to a predetermined height, as shown in FIG. 2A, a lift-up stage 60 is constructed so as to be supported by the main body lower part 20B, and the lift-up stage 60 is lifted up to take a reaction force. The apparatus 110 is installed and the PC steel wire 150 is attached to the lift-up apparatus 110.

  3A and 3B show a configuration of the lift-up device 110, in which FIG. 3A is a front view, FIG. 3B is a sectional view taken along line II-II in FIG. As shown in the figure, the lift-up device 110 is detachably connected to the lifting device 120, the first gripping device 130 connected to the lower side of the lifting device 120, and the lower side of the first gripping device 130. And a second gripping device 140. Note that the lifting device 120 and the first gripping device 130 and the second gripping device 130 and the second gripping device 140 can be detachably connected by being fixed with, for example, a bolt.

  The elevating device 120 includes a plurality of hydraulic jacks 121 and a plurality of gripping mechanisms 122 and 123 attached above and below each hydraulic jack 121. Each hydraulic jack 121 is supplied with hydraulic pressure from the outside, and the expansion / contraction amount of all the hydraulic jacks 121 when the hydraulic pressure is supplied is adjusted to be the same. Each gripping mechanism 122, 123 has a PC steel wire 150 inserted therethrough, and the PC steel wire 150 can be gripped by sandwiching the PC steel wire 150 from the side. The lifting device 120 is connected to a gantry 124 for installation on a lift-up stage below.

Each of the first and second gripping devices 130 and 140 includes a plurality of gripping mechanisms 131 and 141 arranged corresponding to the hydraulic jacks of the lifting device 120. These gripping mechanisms 131 and 141 have the same configuration as the gripping mechanisms 122 and 123 of the lifting device 120. The PC steel wire 150 is inserted inside, and the PC steel wire 150 is sandwiched from the side, so that the PC The steel wire 150 can be gripped. Further, the first and second gripping devices 130 and 140 are connected to the bases 132 and 142 for installation on the lift-up stage downward.
In the example shown in FIG. 3, eight hydraulic jacks 121 and gripping mechanisms 122, 123, 131, and 141 are provided in a square shape.

  According to such a configuration, the PC steel wire 150 is gripped by the gripping mechanism 122 above the lifting device 120 in a state where the lift-up device 110 is installed to take a reaction force on the lift-up stage, and the other gripping mechanisms 123, 131, 141 are opened, the hydraulic jack 121 is extended, and the hydraulic jack 121 is extended, the lower holding mechanism 123 of the lifting device 120, the holding mechanism 131 of the first holding device 130, or the first The PC steel wire 150 is repeatedly gripped by any one of the gripping mechanisms 141 of the gripping device 140 and the contraction of the hydraulic jack 121 in a state where the other gripping mechanisms are opened. Can be raised.

Next, as shown in FIG. 2B, the gain tower 30 is assembled inside the main body lower part 20B in parallel with the construction work of the main body lower part 20B. As shown in FIG. 2B, the gain tower 30 is formed by connecting cylindrical members made up of a plurality of truss frames, and the tip of the PC steel wire 150 of the lift-up device 110 is the uppermost part of the gain tower 30. The gain member 30 is lifted by being attached to the tubular member and the PC steel wire 150 is pulled up by the lifting device 120, and the tubular member can be sequentially connected to the lower portion of the lifted gain tower 30.
And after constructing | assembling the main-body lower part 20B to the height which hits the central observation room 50, as shown to FIG. 2C, the central observation room 50 is constructed in the upper part of the main-body lower part 20B.

  Next, when the construction work of the gain tower 30 is completed, as shown in FIG. 2D, the front end of the PC steel wire 150 attached to the front end of the gain tower 30 is replaced with the lower end portion of the gain tower 30.

Next, after the construction of the central observation room 50 is completed, a work stage 51 is built above the central observation room 50, a tower crane (not shown) is installed on the work stage 51, and the tower crane lifts the work. The main body upper part 20A is constructed by assembling the obtained steel frames. In parallel with this, the operation of assembling the gain tower 30 is continued inside the main body lower part 20B.
Next, as shown in FIG. 2E, the gain tower 30 is lifted by the lifting device 120, and the lower equipment 30 </ b> C is connected to the lower part of the gain tower 30.

  Next, as shown in FIG. 2F, when the construction of the main body upper part 20A reaches the height of the upper observation room 40, the upper observation room 40 is constructed so as to be integrated with the main body upper part 20A. Moreover, as shown in the figure, the lifting / lowering device 120 of the lift-up device 110 that holds the gain tower 30 is replaced with a lift-up stage 70 provided in the upper part of the central observation room 50.

Hereinafter, a method of changing the lifting device 120 will be described with reference to FIGS. 4 and 5.
As shown in FIGS. 4 (A) and 5 (A), the lifting device 120 is lifted in a state where the first and second gripping devices 130 and 140 are connected to each other before the reordering operation. It is installed on the up stage 60. In this state, the PC steel wire 150 is gripped by the second gripping device 140, and the gripping mechanisms 122, 123, 131 of the lifting device 120 and the first gripping device 130 are opened. As a result, the second gripping device 140 takes a reaction force on the lift-up stage 60 and suspends the gain tower 30 via the PC steel wire 150. Then, the second gripping device 140 is separated from the first gripping device 130.

  Next, as shown in FIGS. 4 (B) and 5 (B), the lifting device 120 in the state where the first gripping device 130 is connected is lifted up using a lifting machine 200 such as a crane. Lift up to 70. In parallel with this, the PC steel wire 150 is pulled upward by the small lifting equipment 210 or the like.

  Next, as shown in FIG. 4 (C) and FIG. 5 (C), the lifting / lowering device 120 in a state where the first gripping device 130 is connected is installed on the upper lift-up stage 70, and a small lifting equipment is installed. The PC steel wire 150 is gripped by the elevating device 120 in a state in which a slack is eliminated by applying a tensile force to the PC steel wire 150 by 210 or the like. Then, the second gripping device 140 is opened. As a result, the lifting device 120 takes a reaction force on the upper lift-up stage 70 to suspend the gain tower 30 via the PC steel wire 150, and the refilling operation of the lifting device 120 is completed. The second gripping device 140 may be removed or left behind.

  Next, as shown in FIG. 2G, the fixing unit 20C is constructed above the upper observation room 40 of the main body upper part 20A, and the lift-up stage 80 is constructed above the constructed fixing part 20C. In parallel with this, the gain tower 30 is lifted up by the lifting device 120 until the upper end reaches the vicinity of the height of the central observation room 50.

  Next, as shown in FIG. 2H, the lifting device is replaced from the lift-up stage 70 in the upper part of the central observation room 50 to the lift-up stage 80 provided in the upper part of the main body upper part 20A. Note that the reordering operation of the lifting device 120 may be performed in the same manner as described with reference to FIGS. 4 and 5, and the first operation is performed while applying a reaction force to the lift-up stage 70 in the upper part of the central observation room 50. In a state where the PC steel wire 150 is gripped by the gripping device 130, the first gripping device 130 is disconnected from the lifting device 120, and the lifting device 120 is lifted by a crane or the like, and a lift-up stage provided on the upper portion of the main body upper portion 20A. The PC steel wire 150 may be installed by tensioning the PC steel wire 150 and gripping the PC steel wire 150 by the gripping mechanism 122 of the lifting device 120.

  Next, as shown in FIG. 2I, the gain tower 30 is raised by the elevating device 120 until the tip portion 30 </ b> A protrudes from the upper part of the steel tower body 20. And while raising the gain tower 30, various antennas, such as a parabolic antenna and a television antenna, are attached to the front-end | tip part 30A of the gain tower 30 on the work stage 90 constructed | assembled at the top part of the steel tower main body 20. FIG.

Next, as shown in FIG. 2J, the gain tower 30 is lifted by the lifting device 120 until the fixing portion 30B reaches a height equal to the fixing portion 20C of the steel tower body 20, and then the lower end portion of the gain tower 30 is moved. The steel frame which comprises and the steel frame which comprises the innermost part of the uppermost part of the steel tower main body 20 are joined. Then, the lifting device 120 is disassembled.
The tower-like structure 10 can be constructed by the above steps.

  According to the present embodiment, the first and second gripping devices 130 and 140 are connected to the lower side of the lifting device 120 in advance. By holding the PC steel wire 150, the gain tower 30 can be suspended through the PC steel wire 150. Accordingly, since the lifting device 120 can be moved, even if the lift-up is performed in a plurality of times using the PC steel wire 150 that is shorter than the lift-up height, the single lifting device 120 is used. Lift up can be performed.

  Further, in the present embodiment, when the gain tower 30 is lifted up, the mounting position of the lifting / lowering device 120 is changed upward twice. When the gain tower 30 is lifted up without performing the reordering operation, the PC steel wire 150 having a length equal to or longer than the height at which the gain tower 30 is lifted up is required. Since the work is performed, the PC steel wire 150 can be lifted up to a predetermined height even if the length of the PC steel wire 150 is shorter than the height of the lift-up.

  Further, even before the construction of the tower main body 20 is completed, it is possible to lift up by taking a reaction force on the upper part of the lower main body 20B after the construction is completed. The work of constructing the gain tower 30 in the up state can be performed in parallel. Thereby, a construction period can be shortened.

  In the present embodiment, the first and second gripping devices 130 and 140 capable of gripping the PC steel wire 150 are attached below the lifting device 120, and the gripping devices 130 and 140 serve as a lift-up stage below. The lifting device 120 is raised in a state where the PC steel wire 150 is supported by taking the reaction force. For this reason, when replacing the lifting device 120, a plurality of lifting devices are not required, and the cost can be reduced.

  In the present embodiment, the case where the gain tower 30 is lifted up when the tower-like structure 10 is constructed has been described. However, the present invention is not limited to this. For example, as shown in FIG. When building the building 300 including the observatory 320 provided at the upper part of the main body 310, the building main body 310 is constructed and the observatory 320 is constructed at a height above the ground (FIG. 1A). The present invention can also be applied to the case where the observatory 320 is lifted up while taking the reaction force (FIG. 5B) and the observatory 320 is fixed to the building body 310 to construct the building 300. In addition, the present invention can also be applied to a case where a building constituted by a building main body constructed with a space between them and an observation deck spanned between the building main bodies is constructed.

  Further, for example, when building a building 420 such as a gymnasium, as shown in FIG. 7, the side wall 410 is built to a predetermined height, and the roof portion 420 is built inside the side wall 410 (FIG. )), The reaction force is applied to the portion where the construction of the side wall 410 is completed, and the roof portion 420 is lifted up to a height at which a work space is formed below (FIG. 5B). At the bottom of the roof part 420, the installation work such as lighting is performed, and when the construction work is completed up to the upper part of the side wall 410, the lifting device is replaced and the roof is raised to the height above the side wall to It may be fixed.

  In the above-described embodiment, the case where the reaction force is applied to a part of the main building and lifted up has been described. However, the present invention is not limited thereto, and the case where the reaction force is applied to the temporary structure is lifted up. Even if it exists, this invention is applicable.

  Moreover, in this embodiment, although the gain tower was lifted up via PC steel wire, you may use not only this but a PC steel rod etc., and if it is a member which has sufficient tensile strength, it will use as a suspension member. be able to.

DESCRIPTION OF SYMBOLS 10 Tower-like structure 20 Iron tower main body 20A Main body upper part 20B Main body lower part 20C Fixing part 30 Gain tower 30A Tip part 30B Fixing part 30C Lower equipment 40 Upper observation room 50 Central observation room 51, 90 Work stage 60, 70, 80 Lift-up stage 110 Lifting device 120 Lifting device 121 Hydraulic jack 122, 123 Grip mechanism 124, 132, 142 Grip 130, 140 Grip device 131, 141 Grip mechanism 150 PC steel wire 300 Building 310 Building body 320 Observatory 400 Gymnasium 410 Side wall 420 Building

Claims (6)

A method of lifting a lift-up object by taking a reaction force on a support structure provided in the vicinity of the lift-up object,
A lifting device capable of raising and lowering the lift-up object via a suspension member having a lower end connected to the lift-up object, and a lower part of the lifting device, and being able to grip the suspension member. A lifting device installation step for installing a gripping device;
A first lifting step of lifting a lift-up object through the suspension member by taking a reaction force on the support structure by the lifting device;
Elevating device moving step of moving the elevating device upward and installing it on the support structure in a state where the lift-up object is suspended via the suspending member by grasping the hanging member by the grasping device When,
A refilling step of suspending the lift-up object via the suspension member by the moved lifting device;
A lift-up method for a lift-up target object, comprising: a second lifting step that lifts the lift-up target object through the suspension member by applying a reaction force to the support structure by the lifting device. A lift-up method for a lift-up object according to claim 1,
A lift-up method for a lift-up target object, wherein the lifting device moving step, the refilling step, and the second lifting step are repeated a plurality of times. It is a method of constructing a tower-like structure comprising a tower body formed in a cylindrical shape, and an antenna tower having a lower end connected to the top of the tower body,
A tower body construction step for constructing the tower body;
An antenna tower construction step for constructing the antenna tower inside the tower body;
Lifting up step of lifting the antenna tower until it protrudes from the tower body while taking a reaction force on the tower body;
A connecting step of connecting the suspended antenna tower to the tower body,
In the said lift-up step, the said antenna tower is lifted, taking the reaction force to the said tower main body with the lift-up method of Claim 1 or 2, The construction method of the tower-like structure characterized by the above-mentioned. A method for constructing a tower-like structure according to claim 3,
The tower body construction step includes a first tower body construction step for constructing a portion lower than a predetermined height of the tower body, and a second tower body construction step for constructing a portion higher than the predetermined height of the tower body. And
The tower-like structure construction method, wherein the second tower body construction step and the antenna tower construction step are performed in parallel. A method of constructing a building in which the superstructure is supported on top of the substructure,
A substructure construction step of constructing the substructure;
A superstructure construction step of constructing the superstructure;
A lift-up step of lifting the upper structure upward while taking a reaction force on the lower structure;
Connecting the upper structure to the upper part of the lower structure,
In the said lift-up step, the said upper structure is lifted, taking the reaction force to the said lower structure by the lift-up method of Claim 1 or 2, The building construction method characterized by the above-mentioned. A device for lifting a lift-up object,
A lifting device capable of raising and lowering the lift-up object via a suspension member connected to the lift-up object by taking a reaction force on the support structure;
A lift-up device, comprising: a gripping device that is coupled to a lower portion of the lifting device and that can grip the suspension member by applying a reaction force to a support structure.

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