JPH102108A - Construction method of tower-like RC structure - Google Patents

Abstract

(57) [Summary] (Modified) [Problem] To provide a highly safe technology that can reduce the time required for installation and removal of a post when constructing a tower-like RC structure and can stably support a work stage. I do. SOLUTION: This is a method for constructing a tower-shaped RC structure having an atrium space therein, wherein a tower crane 1 is installed at a position corresponding to the inside of the tower-shaped RC structure to be built, and a work stage 4 is mounted on the tower crane. An AB process in which the work stage 4 is supported by the post 2, a C process in which the work stage 4 is supported by the structure skeleton, and a formwork placed on the structure skeleton for the constructed portion, and the work stage is formed into a mold. Connect with the frame
Step D for assembling the formwork for the block, step E for constructing a structural body for one block by placing concrete in the formwork, and transfer the load of the work stage 4 to the post 2 side of the tower crane. A step F of raising the tower crane to a predetermined height while being supported by the post 2 of the tower crane.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to, for example,
The present invention relates to a method for constructing a tower-shaped RC structure having a through-hole space therein.

[0002]

Generally, a slip-form method is used to construct a tower-like RC structure such as a chimney. This is characterized by using a cylindrical formwork and alternately repeating the concrete casting into the formwork and the raising of the formwork after hardening of the concrete. Labor saving can be achieved.

By the way, in recent years, a complicated structure,
For example, a structure in which the cross section changes continuously or a structure in which the cross section changes discontinuously in a stepwise manner tends to be preferred. However, it is difficult for the above-mentioned slip foam method to cope with the construction of a structure having such a complicated shape. Furthermore, it is difficult to apply the present invention to the case where the outer peripheral surface of the structure is tiled or the outer peripheral surface is formed by a driving type decorative panel.

In order to solve such problems, Japanese Patent Laid-Open Publication No.
No. 146578 discloses a technique called a climbing stage construction method for a tubular structure and a chimney construction method. This technique is briefly described as follows. First, a tower crane is installed at a position corresponding to the inside of a structure to be constructed, and a second post is erected in parallel with the tower crane post. Then, a plurality of climbing stages (work stages) are set up and down along the second post.

[0005] Subsequently, a part of the climbing stage is used as a form retainer, and a form of one block is assembled on the existing structural body. Concrete is poured into the formwork, and when it has hardened, the tower crane and the climbing stage are climbed up to a predetermined height as necessary to prepare for building the frame of the next block. These operations are repeated a predetermined number of times, and when the construction of the structure is almost completed, a specific portion of the climbing stage is fixed on the top of the structure and the tower crane is removed.

[0006] The above method is applicable to the construction of a structure having a complicated shape. However, on the other hand, the tower crane and the climbing stage must be supported by different large posts.
Since this book is necessary, it takes a lot of time to install and remove it. In addition, the higher the vehicle is above the ground, the lower the stability of the climbing stage becomes, and the more likely it is to roll.

Accordingly, a first problem to be solved by the present invention is to provide a technique capable of reducing the time required for installing and removing posts when constructing a tower-like structure, particularly a tower-like RC structure. That is. A second object is to provide a technique that can stably support a work stage and has excellent safety.

[0008]

An object of the present invention is to provide a method of constructing a tower-shaped RC structure having a blow-through space therein, wherein a tower crane is mounted at a position corresponding to the inside of the tower-shaped RC structure to be constructed. A process to be installed and work stage
Step B of installing the tower crane in a state where it is supported by the post, and transferring the load of the work stage to the structure skeleton side constructed from the post side of the tower crane, and moving the work stage to the structure C supported by frame
Place the formwork on the process and the structure skeleton of the built,
Further, this form and the work stage supported by the structural body are connected by a form retainer, and a D step of assembling the form of one block, and a reinforcing bar is inserted into the form obtained in the D step. After arranging the concrete stage, a concrete block is cast by constructing a structural body for one block, and the load of the work stage is transferred from the structural body side to the post side of the tower crane. Is raised to a predetermined height while being supported by the post of the tower crane F
And a method for constructing a tower-shaped RC structure.

In particular, a tower-shaped R having a blow-through space therein
A method for constructing a C structure, wherein an A ′ step of installing a tower crane provided with a push-up device on a base side at a position corresponding to the inside of a tower-shaped RC structure to be constructed,
A step B in which the work stage is installed while being supported by the tower crane post, and the load on the work stage is transferred from the post side of the tower crane to the structure skeleton side built for the work stage; Step C in which the above-mentioned structure is supported by the structure body, a formwork is arranged on the structure body for the amount of construction, and this formwork is connected to the work stage supported by the structure body with a formwork copy. Then, a step D for assembling the formwork for one block, and after placing the reinforcing steel in the formwork obtained in the step D, concrete is cast to construct a structural body for one block E Transferring the load of the work stage from the structural body side to the post side of the tower crane, and raising the work stage to a predetermined height while being supported by the post of the tower crane. It is solved by method of constructing a tower-like RC structure characterized by comprising a degree.

In the above-described method for constructing a tower-shaped RC structure, the steps C, D, E, and F are repeatedly performed as many times as necessary.
Further, the above object is a method of constructing a tower-shaped RC structure having an atrium space therein, and a G step of installing a tower crane at a position corresponding to the inside of the tower-shaped RC structure to be constructed; An H step for erecting two or more temporary guide columns in parallel with the tower crane post, an I step for setting a work stage while supporting the temporary guide pillars, and projecting a horizontal stay from the work stage. And the work stage is supported by the structure
Place the formwork on the process and the structure skeleton of the built,
Further, a K step of assembling the formwork for one block by connecting the formwork and the work stage supported by the structural body with a formwork retainer, and reinforcing steel in the formwork obtained in the K step. After arranging, an L step of casting concrete to construct a structure skeleton for one block, and retracting the horizontal stay to release the support state of the construction skeleton corresponding to the constructed work stage. And an M step of raising the work stage to a predetermined height while being supported only by the temporary guide pillars, thereby solving the problem.

In particular, a tower-shaped R having a blow-through space therein
A method for constructing a C structure, wherein a G ′ step of installing a tower crane provided with a push-up device on a base side at a position corresponding to the inside of a tower-shaped RC structure to be constructed,
An H step for erecting two or more temporary guide columns in parallel with the post of the tower crane, an I step for installing a work stage while being supported by the temporary guide columns, and a horizontal stay from the work stage. J step of projecting and supporting the work stage with the constructed structure skeleton, and disposing a formwork on the constructed structure skeleton, further supported by the formwork and the structure skeleton. The work stage is connected to the form retainer, and a K step for assembling the formwork for one block is provided. After the rebar is placed in the form obtained in the K step, concrete is cast. The L step of constructing the structural body of the block and the horizontal stay are retracted to release the support state of the structural body corresponding to the constructed work stage, and the work stage is moved only to the temporary guide pillar. Supported state Is solved by method of constructing a tower-like RC structure characterized by comprising the M step increased to a predetermined height.

In the method of constructing the tower-shaped RC structure, the steps J, K, L, and M are performed by repeating necessary steps as many times as necessary.
That is, in the present invention, the work stage is installed using the tower crane post, and the load of the work stage is appropriately transferred between the tower crane post and the constructed structure skeleton. ing. That is, since the tower crane and the work stage are supported by the same post, only one post is required. Therefore, the installation and removal are not troublesome. Also,
Even when the work stage is installed using two or more temporary guide columns parallel to the tower crane post, each temporary guide column can be small in diameter, so the same as in the previous case, The construction work can be made more efficient and labor-saving without labor.

Further, when constructing the structural body using the work stage, the load of the work stage is transferred from the post of the tower crane to the structural body, and the work stage is supported by the structural body existing around the work stage. As a result, rolling is less likely to occur and stability is high. In particular, since a stable state is maintained irrespective of the height from the ground, safety is excellent. Even when the temporary guide columns are used, the same effect is exhibited by supporting the work stage with the structural body.

In the construction method of the tower-shaped RC structure, it is preferable that when the tower crane is disassembled, the tower crane is lowered by its own weight while removing its posts one by one. That is, in the conventional method, when removing the tower crane, a crane for assistance was required. However, as in the present invention, if a push-up device is provided on the base side of the tower crane, and the posts of the tower crane are removed one by one using this push-up device, an assisting device for removing the tower crane is used. A crane is not required, and further labor saving can be achieved.

Further, when transferring the load of the work stage to the structure body corresponding to the constructed amount, the work stage is provided on the structure body side with a horizontal stay provided on the work stage side and capable of moving in and out in the horizontal direction. The work stage can be supported by the structural body by hanging a load receiving bracket. Also, in order to further streamline construction, the formwork provided on the inner peripheral surface side of the structure skeleton is lifted upward after the cast concrete is hardened, and is used to construct the structure skeleton of the next block part It is preferred to use.

In order to improve workability, it is preferable to use a work stage having a work floor which can be expanded and contracted in the horizontal direction.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION The method of constructing an RC structure according to the present invention relates to the construction of a tower-like RC structure having an atrium space therein. A process of installing a tower crane at the position where
A step B in which the work stage is installed while being supported by the tower crane post, and the load on the work stage is transferred from the post side of the tower crane to the structure skeleton side built for the work stage; Step C in which the above-mentioned structure is supported by the structure body, a formwork is arranged on the structure body for the amount of construction, and this formwork is connected to the work stage supported by the structure body with a formwork copy. Then, a step D for assembling the formwork for one block, and after placing the reinforcing steel in the formwork obtained in the step D, concrete is cast to construct a structural body for one block E Transferring the load of the work stage from the structural body side to the post side of the tower crane, and raising the work stage to a predetermined height while being supported by the post of the tower crane. ; And a degree, the process C, D process, E process, among the F step, and wherein the repeat as many times as necessary the necessary steps.

Hereinafter, the first embodiment of the present invention will be described in detail with reference to FIGS. 1 is a side view showing a state in which a tower crane and a climbing stage are installed, FIG. 2 is a cross-sectional view showing a state in which construction of a structural body up to the (N-1) th block is completed, and FIG. PC
FIG. 4 is a sectional view showing a state in which the installation of the plate has been completed, and FIG.
FIG. 5 is a cross-sectional view showing a state in which a reinforcing bar is placed on a block part and the inner form is lifted, FIG. 5 is a cross-sectional view showing a state where concrete is poured into an N-th block part, and FIG. FIG. 7 is a cross-sectional view of the structure body showing a situation where the tower crane is removed.

Although the construction method of the present embodiment does not use a climbing stage (working stage) for construction near the ground, there is a difference that the construction is performed using a certain height from the climbing stage. , A similar process is repeated. Therefore, the construction of the structural body of the Nth block portion will be described as an example. First, as shown in FIG. 1, the tower crane 1 is installed at a position corresponding to the inside of the tower-shaped RC structure to be constructed. This tower crane 1
The push-up device 3 is provided at the base of the post 2
Is provided.

Subsequently, the climbing stage 4 is set using the post 2. At this time, a jack-up device 5 is interposed between the post 2 and the climbing stage 4 so that the climbing stage 4 can move up and down along the post 2. The post 2 is composed of a plurality of unit pillars, and the push-up device 3 is used to add unit pillars one by one (one section) from below to increase the height dimension. Can be. Also,
The climbing stage 4 has a plurality of working floors, some of which are horizontally expandable and contractible in order to enhance workability. Further, a horizontal stay 7 is provided on the lower end side main frame 6 of the climbing stage 4 so as to be able to come and go. The load of the climbing stage 4 is transferred using the horizontal stay 7 to the structural body corresponding to the constructed structure.

After the installation of the tower crane 1 and the climbing stage 4 is completed, the main construction of the structural body is started. However, as described above, in the present embodiment, since the construction of the structural body of the N-th block portion is taken as an example, the (N
-1) The description starts from a state where the construction up to the block portion is completed. As shown in FIG. 2, when the construction of the structural body up to the (N-1) th block is completed, the jack-up device 5 is operated to raise the climbing stage 4 by one block. Then, the climbing stage 4 is fixed at that position. For the fixing of the climbing stage 4, the above-mentioned horizontal stay 7 that can freely move in and out is used. That is, as shown in FIG. 3, the horizontal stay 7 is projected above the load receiving bracket 8 previously attached to the structural body, and the load receiving bracket 8 can be hooked by the projected horizontal stay 7. I do. Next, the jack-up device 5 is operated in reverse, and the load of the climbing stage 4 is transferred from the post 2 to the structural body.

By holding the load receiving bracket 8 with the horizontal stay 7 in this way, the climbing stage 4
Is fixed to the structure frame. Therefore, post 2
Even if the connection between the climbing stage 4 and the climbing stage 4 is released, the climbing stage 4 is supported by the structural body existing around the climbing stage 4. When the connection between the post 2 and the climbing stage 4 is released, if necessary, the push-up device 3 is operated to raise the tower crane 1.

When the above operation is completed, the driving half PC plate 9 constituting the outer peripheral surface is placed on the structure body. Then, the half PC plate 9 and the climbing stage 4 are connected by the form stay 10.
Also, the inner formwork in the (N-1) th block portion is
Raised to the block part, and used as the inner mold of the Nth block part.

Further, the reinforcing bar 11 is arranged on the N-th block in parallel with the installation work of the formwork. This reinforcing bar 11 is previously unitized on the ground, and as shown in FIG. 4, is lifted on the structural body to be tightly connected to the reinforcing bar of the (N-1) th block portion. When arranging the reinforcing bars 11, the uppermost work floor of the climbing stage 4 is retracted to the maximum so that it does not hit the upper end of the reinforcing bars 11.

The work of attaching the bracket 12 receiving the load of the climbing stage 4 to the (N-1) th block portion is performed simultaneously with the above-described construction of the formwork and the reinforcing bar. After the completion of the preparatory work in this way, as shown in FIG. 5, concrete forming the N-th block portion of the structural body is poured into the formwork. When the poured concrete has hardened, the climbing stage 4 is supported on the post 2 again. Then, the jack-up device 5 is operated to lift the climbing stage 4, and the horizontal stay 7 is retracted. In this way, the work related to the construction of one block of the structural body is completed.

At the same time as the construction of the structural body, the internal structure such as the permanent stage 4a shown in FIG. The above work,
The steps from the (N + 1) th block onward are repeated. When the construction of the structural body is almost completed as shown in FIG. 6, the jack-up device 5 and the climbing stage 4 are removed.

With respect to the tower crane 1, the boom is raised upright and, as shown in FIG. 7, the tower crane 1 is lowered by its own weight while removing the unit columns 2a constituting the posts 2 one by one from below. Let it. In the method of constructing a tower-shaped RC structure according to the present invention, the climbing stage and the tower crane can be supported by the same post as described above, and the time required for installation and removal is smaller than in the conventional method. It will be. Therefore, efficiency of construction work and labor saving can be achieved. In addition, when performing construction work of the structure frame using the climbing stage, the climbing stage is supported by the structure frame, so a stable state is maintained even at high altitudes, and safety is high . In particular, except when the climbing stage is moved up and down, the climbing stage is cut off from the tower clay post, and is not affected by the vibration or shaking of the tower clay. Then, the posts are removed one by one from below using the push-up device provided on the base side, so that the work can be performed without a crane for assistance and further labor saving can be achieved.

In the first embodiment, a single post supports both the tower crane and the climbing stage. However, the temporary guide post is smaller than the post and is easy to install and remove. Can be used to support the climbing stage. In the following, a technique using the temporary guide pillar is described as a second embodiment in FIG.
This will be described with reference to FIG. FIG. 8 shows the (N-1) th
FIG. 9 is a cross-sectional view showing a state in which the construction of the structure body up to the block portion has been completed, FIG. 9 is a cross-sectional view showing a state in which the installation of the half PC version has been completed, and FIG. FIG. 11 is a cross-sectional view showing a state where the mold is lifted.
FIG. 4 is a cross-sectional view showing a state where concrete is poured into an N-th block portion. 8 to 11 show a cylindrical structure, however, in the construction method of the second embodiment, similarly to the first embodiment, a structure having various shapes such as a truncated cone is used. It goes without saying that it can be applied to construction.

In the present embodiment, similarly to the first embodiment, the tower crane 13 is installed at a position corresponding to the inside of the tower-shaped RC structure to be constructed. This tower crane 1
A push-up device 15 is provided at the base of the post 14 supporting the 3. Subsequently, a plurality of temporary guide columns 16 are erected at positions corresponding to the skeleton of the tower-shaped RC structure. Then, a jack-up device 18 is interposed between the temporary guide pillar 16 and the climbing stage 17 so that the climbing stage 17 can move up and down along the temporary guide pillar 16.

The climbing stage 17 has the same structure as that of the first embodiment, that is, it has a plurality of working floors, and a part of the working floor is horizontally expandable and contractible. A horizontal stay 20 is provided on the lower end side main frame 19 of the climbing stage 17 so as to be able to come and go. As will be described later, the climbing stage 17 is supported by the structure body constructed via the horizontal stay 20, thereby preventing the roll.

As shown in FIG. 8, when the construction of the structural body up to the (N-1) th block is completed, the jack-up device 18 is operated, and as shown in FIG. Raise by blocks. Then, the horizontal stay 20 is made to protrude, and the climbing stage 17 is fixed to the constructed structure body. When the above operation is completed, the driving half PC plate 21 constituting the outer peripheral surface is placed on the structure body. Furthermore, half PC version 21 and climbing stage 1
7 are connected by a form stay 22. In addition, the (N-
1) The inner mold that was in the block part is raised to the N-th block part, and is used as the inner mold of the N-th block part.

Further, in parallel with the setting work of the formwork, FIG.
As shown in the figure, the reinforcing bar 23 of the N-th block portion is arranged. After the preparation work is completed in this way, as shown in FIG. 11, concrete forming the N-th block portion of the structural body is poured into the formwork. When the poured concrete has hardened, the horizontal stay 20 is retracted, and the climbing stage 17 is supported only by the temporary guide columns 16. Thus, the process related to the construction of one block of the structural body is completed.

By repeating the above operation for the (N + 1) th block and thereafter, a cylindrical RC structure can be obtained. Also in the construction method of the second embodiment, the stability of the climbing stage at a high place is good, so that the safety is high and the post is moved from below by one section using a push-up device provided on the base side. Since the cranes are removed one by one, work can be performed without a crane for assistance, and further labor saving can be achieved. Further, since each of the temporary guide columns has a small diameter, installation and removal are not troublesome, and the construction work can be made more efficient and labor-saving as compared with the conventional construction method.

[0034]

According to the present invention, when constructing a tower-shaped RC structure, it is possible to reduce the labor required for installing and removing the posts. In addition, the work stage can be stably supported, and the construction work can be performed safely. Further, when removing the tower crane, no crane for assistance is required.

[Brief description of the drawings]

FIG. 1 is a side view showing a state where a tower crane and a climbing stage are installed.

FIG. 2 is a cross-sectional view showing a state in which the construction of the structural body up to the (N-1) th block is completed.

FIG. 3 is a cross-sectional view showing a state in which installation of a half PC version is completed.

FIG. 4 is a cross-sectional view showing a state in which a reinforcing bar is arranged in an N-th block portion and an inner form is raised.

FIG. 5 is a cross-sectional view showing a state where concrete is poured into an N-th block portion.

FIG. 6 is a cross-sectional view of the structural body in a state where the construction is almost completed.

FIG. 7 is a cross-sectional view of a structure body showing a situation where a tower crane is removed.

FIG. 8 is a cross-sectional view showing a state in which the construction of the structural body up to the (N-1) th block is completed.

FIG. 9 is a cross-sectional view showing a state in which installation of the half PC version is completed.

FIG. 10 is a sectional view showing a state in which a reinforcing bar is arranged in the N-th block portion and the inner form is lifted up.

FIG. 11 is a cross-sectional view showing a state where concrete is poured into the N-th block portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tower crane 2 Post 3 Push-up device 4 Climbing stage (working stage) 4a Main stage 5 Jack-up device 7 Horizontal stay 8,12 Load receiving bracket 9 Half PC version 10 Form stay 11 Reinforcing bar

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location E04G 11/04 E04G 11/04 21/14 21/14 E04H 12/28 E04H 12/28 B (72 Inventor Yutaka Nakamura 1-25-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei Construction Co., Ltd. (72) Inventor Hisayuki Sasa 1-25-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei Construction Co., Ltd. (72) Inventor Yoshihiro Nakamoto 6-4 Akashi-cho, Chuo-ku, Tokyo Inside Ishikawajima Transport Machinery Co., Ltd. (72) Inventor Takaomi Hirabe 6-4 Akashi-cho, Chuo-ku, Tokyo Inside Ishikawajima Transport Machinery Co., Ltd.

Claims (10)

[Claims] 1. A method for constructing a tower-shaped RC structure having an atrium space therein, comprising: a step A for installing a tower crane at a position corresponding to the inside of the tower-shaped RC structure to be constructed; B step of installing the tower crane in a state where it is supported by the post, and transferring the load of the work stage to the structure skeleton side constructed from the post side of the tower crane, and changing the work stage to the structure Step C supporting with the body, and placing a formwork on the structure body for the constructed portion, further connecting the formwork and the work stage supported by the structure body with a formwork copy, D to assemble formwork for one block
A step of arranging the reinforcing steel in the formwork obtained in the step D, casting concrete, and constructing a structural body for one block, and applying a load of the work stage to the structure. Transferring the work stage from the skeleton side to the post side of the tower crane, and raising the work stage to a predetermined height while being supported by the post of the tower crane. How to build. 2. A method for constructing a tower-shaped RC structure having an atrium space therein, the tower having a push-up device provided on a base side at a position corresponding to the inside of the tower-shaped RC structure to be constructed. A ′ process of installing a crane, B process of installing a work stage supported by the post of the tower crane, and a structure corresponding to the load of the work stage built from the post side of the tower crane Step C for transferring the work stage to the structure side and supporting the work stage with the structure body, and placing a formwork on the structure body for the constructed portion, and further supported by the formwork and the structure body. D to assemble the formwork for one block by connecting the work stage with the formwork copy
A step of arranging the reinforcing steel in the formwork obtained in the step D, casting concrete, and constructing a structural body for one block, and applying a load of the work stage to the structure. Transferring the work stage from the skeleton side to the post side of the tower crane, and raising the work stage to a predetermined height while being supported by the post of the tower crane. How to build. 3. The tower-like RC structure according to claim 1, wherein a necessary step among the steps C, D, E, and F is repeated a required number of times. How to build. 4. When transferring the load of the work stage to the structure body corresponding to the constructed structure, a horizontal support provided on the work stage side and capable of protruding and retracting in the horizontal direction, and a load receiver provided on the structure body side 2. The work stage is supported by the structural body by hanging a bracket.
A method for constructing a tower-shaped RC structure according to any one of claims 1 to 3. 5. A method for constructing a tower-shaped RC structure having an atrium space therein, comprising: a G step of installing a tower crane at a position corresponding to the inside of the tower-shaped RC structure to be constructed; An H step of erecting two or more temporary guide columns in parallel with the post, an I step of setting a work stage while being supported by the temporary guide columns, and projecting a horizontal stay from the work stage, A J step of supporting the work stage with the constructed structure skeleton, and disposing a formwork on the constructed structure skeleton, and further supporting the work stage with the formwork and the structure skeleton. Is connected with the formwork holder to assemble the formwork for one block.
A step of arranging the rebar in the formwork obtained in the K step, and then casting concrete to construct a structural body for one block; and retreating the horizontal stay, A step of releasing the state of support of the structure body corresponding to the constructed work stage, and raising the work stage to a predetermined height while being supported only by the temporary guide columns. Method of constructing a shaped RC structure. 6. A method for constructing a tower-shaped RC structure having an atrium space therein, the tower having a push-up device provided on a base side at a position corresponding to the inside of the tower-shaped RC structure to be constructed. A G 'process for installing a crane, an H process for erecting two or more temporary guide columns in parallel with the tower crane post, and an I process for installing a work stage while being supported by the temporary guide columns. And a J step of projecting a horizontal stay from the work stage and supporting the work stage with the constructed structure skeleton, disposing a formwork on the constructed structure skeleton, and further forming the mold A frame and a work stage supported by the structural body are connected with a form retainer to assemble a block of form.
A step of arranging the rebar in the formwork obtained in the K step, and then casting concrete to construct a structural body for one block; and retreating the horizontal stay, A step of releasing the state of support of the structure body corresponding to the constructed work stage, and raising the work stage to a predetermined height while being supported only by the temporary guide columns. Method of constructing a shaped RC structure. 7. The tower-like RC structure according to claim 5, wherein a necessary step among the J step, the K step, the L step, and the M step is repeated a required number of times. How to build. 8. The tower-shaped RC structure according to claim 1, wherein when the tower crane is dismantled, the tower crane is lowered by its own weight while removing its posts one by one. How to build. 9. The method according to claim 1, wherein the formwork provided on the inner peripheral surface side of the structure body is lifted upward after the cast concrete is hardened, and is used for constructing the structure body of the next block portion. The method for constructing a tower-like RC structure according to any one of claims 1 to 8. 10. The method for constructing a tower-shaped RC structure according to claim 1, wherein a work stage provided with a work floor which can expand and contract in a horizontal direction is used as the work stage.