JP2010242362A - Demolition method for tower-like building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an economical demolition method for a tower-like building which dispenses with the work for constructing a new foundation for demolition work, when demolishing the tower-like building from its lower part and the work for removing the foundation for the demolition work after demolishing the tower-like building. <P>SOLUTION: In this demolition method for the tower-like building, this tower-like building 1 is separated into an upper part skeleton 2 of the building and a lower part skeleton 3 of the building, the upper part skeleton 2 of the building is pulled down with a jack by making use of the lower part skeleton 3 of the building as a support pedestal, the upper part skeleton 2 of the building is sequentially demolished from a lower layer using an upper face of the lower part skeleton 2 of the building as a work floor 16, and then the lower part skeleton 3 of the building is demolished by the work on the ground. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention includes, for example, an S-structure upper structure and an SRC structure lower structure composed of a rectangular columnar upper frame formed in the observation room and an antenna tower standing on the observation room. The present invention relates to a method for dismantling a tower-shaped building with a high aspect ratio represented by a tower-shaped building with a high aspect ratio such as a tower with an observation floor on the intermediate floor from the bottom.

  For example, when dismantling from the lower part while jacking down a tall tower building exceeding 100 meters, conventionally, as seen in Patent Documents 1 and 2, a crane vehicle, etc. A technique was adopted in which a temporary culvert with a height that could be dismantled by working from the ground with a jack was used, and the upper part of the building was jacked down using a center hole jack installed in the temporary casket.

  In this case, when the tower-like building is separated into the temporary fence, the entire weight of the upper building acts from the separation position, and the weight is transmitted to the ground via the temporary fence.

  For this reason, the above-described conventional method requires a foundation for supporting the entire weight of the temporary fence and the upper part of the building directly under the temporary fence, which is disadvantageous in terms of construction period and construction cost. That is, there is usually no unnecessary foundation around the tower building, so when using the above-mentioned conventional method, the foundation for dismantling work (temporary fences) is placed around the tower building foundation. In addition, it is necessary to remove the foundation after dismantling the tower-like building. As a result, the construction period becomes longer and it is very uneconomical.

  In the conventional method of Patent Document 1, the lower end of the upper part of the building that has been jacked down is placed on the work floor provided in the middle stage of the temporary fence, and the work floor is restrained on the upper end side of the temporary fence. In addition to using a temporary frame with a work floor with a large amount of temporary material as a temporary fence, construction work of the work floor with respect to the temporary frame and a tower shape are constructed. The work floor must be removed after the building is demolished, which is also uneconomical.

JP-A-53-69437 Japanese Patent Laid-Open No. 61-196072

  The present invention has been made in view of the above-mentioned problems, and the purpose of the present invention is to construct a foundation for dismantling work (foundation of a temporary fence) when dismantling a tower building from the bottom. The purpose is to realize an economical dismantling method that eliminates the need for construction and removal of the foundation for temporary dredging after dismantling the tower building.

The technical means taken by the present invention in order to achieve the above object are as follows. That is, in the method for dismantling a tower building according to the first aspect of the present invention, the tower building is separated into a building upper housing and a building lower housing, and the building upper housing is jacked down using the building lower housing as a support frame. In this way, the upper structure of the building is dismantled sequentially from the lower layer, and then the lower structure of the building is dismantled by work from the ground.

  Invention of Claim 2 is the dismantling method of the tower-like building of Claim 1, Comprising: A tower-like building is isolate | separated into a building upper housing and a building lower housing, and a building lower housing is utilized for a support frame. By jacking down the upper structure of the building, the upper structure of the building is dismantled in order from the lower layer in a state where part of the structure remains, and then the upper structure of the building and the lower structure of the building left by work from the ground are disassembled in this order. It is characterized by doing.

  The invention described in claim 3 is a more specific embodiment of the invention described in claim 2. That is, the invention according to claim 3 is the dismantling method of the tower-like building according to claim 2, wherein the upper frame formed in the observation room at the upper part and the tower for antennas erected on the upper part of the observation room; In a tower-shaped building with a building upper frame and a building lower frame, the temporary frame for horizontal fixation surrounding the building upper frame is supported by the building lower frame, and the building upper frame and lower building Using the center hall jack installed on the temporary frame, jacking down the upper building frame, the upper frame of the lower building frame is used as the work floor, and the upper frame below the observation room is sequentially disassembled from the lower layer. After that, the antenna tower is removed by work from the ground using a crane vehicle or the like, and then the observation room and the lower building of the building are disassembled in this order.

  The invention according to claim 4 is the dismantling method of the tower building according to claim 3, wherein after the unloading stage, the temporary elevator, and the frame scaffolding are installed around the lower building of the building, the upper building of the building is It is characterized in that a surrounding horizontal fixing temporary frame is provided in a state of being supported by a lower building frame.

  According to invention of Claim 1, a tower-like building is separated into a building upper frame and a building lower frame, and the building upper frame is jacked down by using the building lower frame as a support frame. Since the building is demolished sequentially from the lower layers, the tower building foundation is used as it is as the foundation for the demolition work. This eliminates the need for new construction of foundations for dismantling work (foundation of temporary fences) and removal of the foundations for temporary fences after dismantling tower buildings, which is advantageous in terms of construction period and cost. Economical. In addition, since the lower building of the building is dismantled by work from the ground, it can be dismantled more quickly than the jackdown method.

  According to the first aspect of the present invention, the entire upper structure of the building is dismantled sequentially from the lower layer, and then the lower structure of the building is dismantled by work from the ground. This includes the case where the remaining building upper frame and the building lower frame are dismantled in this order by the work from the ground after sequentially dismantling from the lower layer. That is, depending on the shape and structure of the building upper frame, as described in claim 2, after the building is dismantled sequentially from the lower layer in a state in which a part of the building upper frame remains, the building upper unit left by the work from the ground It is more reasonable to dismantle the building and the lower building in this order because the whole building can be expedited.

  According to invention of Claim 3, the tower provided with the building upper frame and the building lower frame comprised from the upper frame in which the upper part was formed in the observation room, and the antenna tower erected in the upper part of the observation room In the shape of a building, a temporary frame for horizontal fixation surrounding the upper building of the building is supported by the lower building of the building, separated into the upper and lower building of the building, and a center hole jack installed on the temporary frame is used. Since the upper part of the building is jacked down, the entire weight of the temporary frame and the upper part of the building is supported by the lower part of the building. Therefore, the foundation of the tower building is used as it is as the foundation of the temporary frame (the foundation for the dismantling work), and the same effect as the invention of claim 1 is obtained.

  In particular, according to the third aspect of the present invention, the upper surface of the lower building of the building is used as the work floor, and the upper frame below the observation room is sequentially disassembled from the lower layer. This eliminates the need for a temporary work floor, and eliminates the work floor construction work for the temporary frame and the work floor removal work after dismantling the tower building, which is more economical.

  Rather than dismantling the entire upper structure of the building from the lower layer, the observation room and the antenna tower above it remain in the upper structure of the building. Since the steel tower was removed, and then the observation room and the lower building of the building were dismantled in this order, the entire dismantling work could be speeded up, which is reasonable.

  According to the invention described in claim 4, after the unloading stage, the temporary elevator, and the frame scaffolding are installed around the lower building of the building, the temporary frame for horizontally fixing surrounding the upper building of the building is supported by the lower building of the building. Since the provisional state is provided, the construction work of the temporary frame can be easily performed.

It is a figure explaining the dismantling method of the tower-shaped building which concerns on this invention. It is explanatory drawing of the dismantling method of the tower-like building following FIG. It is explanatory drawing of the dismantling method of the tower-like building following FIG. It is explanatory drawing of the dismantling method of the tower building following FIG. It is a cross-sectional top view of the principal part. It is a vertical front view of the principal part. It is a vertical front view of the principal part. It is explanatory drawing of the dismantling method of the tower-like building which shows other embodiment of this invention. It is explanatory drawing of the dismantling method of the tower building following FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 7 show an example of a method for dismantling a tower building according to the present invention. 1 shown in FIG. 1A is a tower-like building including an S building upper housing 2 and an SRC building lower housing 3. The upper structure 2 of the building is composed of a rectangular columnar upper frame 5 formed in the observation room 4 at the upper part and an antenna tower 6 erected on the upper part of the observation room 4. The upper half side of the lower building housing 3 has a quadrangular prism shape similar to that of the upper frame 5, and SRC columns 7 are arranged at the four corners. S pillars 8 made of circular steel pipes arranged at the four corners of the building upper frame 2 are concentrically arranged on the pillars 7. The lower half side of the column 7 of the lower building 3 of the building is formed as an inverted V-shaped inclined column 7a, and the lower ends of the inclined column 7a are connected to each other. And the foundation (not shown) which transmits the load of a tower-like building to the ground is provided in the ground just under the connection part of the inclined column 7a.

  In dismantling the tower-shaped building 1 from the lower part, first, as shown in FIG. 1B, by the work from the ground using a crane vehicle a such as a rougher, An unloading stage 9, a temporary elevator (not shown), and a framework scaffold 10 are installed.

  Thereafter, as shown in FIG. 2 (A), the building upper frame 2 is surrounded and the horizontal fixing temporary frame 11 for restraining the horizontal movement of the building upper frame 2 is supported by the building lower frame 3. Provided. The temporary frame 11 is installed using a crane vehicle a such as a rough terrain, an unloading stage 9, a temporary elevator, a frame scaffolding 10 and the like installed around the lower building 3 of the building.

The temporary frame 11 is framed by a steel beam or a steel brace. As shown in FIG. 5, the temporary frame 11 is framed in a rectangular tube shape surrounding the quadrangular columnar upper frame 5 in parallel with the four surfaces of the upper frame 5. Has been. Reference numeral 12 shown in FIG. 5 denotes an elevator shaft provided over the observation room 4 of the upper building 2 and the lower end of the lower building 3. Two center hole jacks 13 having a known structure are installed in the upper part of the four corners of the temporary frame 11 with two pillars 8 of the building upper frame 2 interposed therebetween.

  In providing the temporary frame 11 in a state where it is supported by the lower building 3 of the building, various specific configurations can be adopted. In this embodiment, as shown in FIGS. The weight of the temporary frame 11 and the load acting on the temporary frame 11 can be transmitted to the building lower frame 3 by the crimping method using the PC steel material 14 and the fastening nut 15 to the parapet or beam of the building lower frame 3 in the vicinity of the lower end of the side. The building lower housing 3 is used as a support frame.

  Then, the tower-like building 1 is separated into a building upper housing 2 and a building lower housing 3, and the temporary frame 11 is placed on the temporary frame 11 as shown in FIGS. 2B, 3A, 6 and 7. The upper frame 5 below the observation room 4 is sequentially disassembled from the lower layer by jacking down the building upper frame 2 using the installed center hole jack 13. As shown in FIGS. 6 and 7, this dismantling work (cutting and dismantling and removal of the cut part) is performed with the upper surface (roof slab) of the building lower housing 3 as the work floor 16. Therefore, the temporary frame 11 is not provided with a temporary work floor. Reference numeral 13a shown in FIGS. 6 and 7 is an add-on type suspension rod that is driven up and down by the center hole jack 13. Reference numeral 13b denotes a clamp mechanism having a structure that can be split in half so as to support the pillar 8 in a sandwiched manner, and is detachably connected to the lower end of the suspension rod 13a.

  Next, as shown in FIG. 3B, after the temporary frame 11 is dismantled and removed by work from the ground using a crane vehicle a such as a rough terrain, as shown in FIG. The antenna tower 6 was removed by the work from the ground using a large tower-front type crane vehicle b, and then, as shown in FIGS. 4B and 4C, a traveling dismantling machine c was used. The observation room 4 and the lower building 3 of the building are dismantled in this order by work from the ground.

  According to the above configuration, the building upper frame 2 and the building lower frame 3 each having an upper frame 5 formed in the observation room 4 and an antenna tower 6 erected on the observation room 4 are provided. In the tower-shaped building 1, a horizontal fixing temporary frame 11 surrounding the building upper frame 2 is provided to be supported by the building lower frame 3, separated into the building upper frame 2 and the building lower frame 3, and the temporary frame 11. Since the building upper frame 2 is jacked down using the center hole jack 13 installed in the building, the entire weight of the temporary frame 11 and the building upper frame 2 is supported by the building lower frame 3.

  Therefore, the foundation of the tower building 1 is used as it is as the foundation of the temporary frame 11 (the foundation for the dismantling work), and the foundation construction for the dismantling work or the dismantling of the tower building after the dismantling Since the work foundation removal work is unnecessary, it is advantageous both in terms of construction period and construction cost, and is very economical.

  In particular, according to the above configuration, the upper surface of the lower building 3 is used as the work floor 16 and the upper frame 5 below the observation room 4 is sequentially disassembled from the lower layer. Therefore, there is no need for a temporary work floor, and there is no need for a work floor construction work for the temporary frame 11 or a work floor removal work after the tower building 1 is dismantled.

In addition, instead of sequentially dismantling the entire building upper frame 2 from the lower layer, the observation room 4 and the antenna tower 6 on the upper part of the building upper frame 2 remain, and the ground using a crane vehicle b with a large lift. The tower 6 for the antenna is removed by the work from, and then the observation room 4 and the lower housing 3 of the building are disassembled in this order by the work from the ground using the crane car a having a small lift and the traveling type demolition machine c. As a result, the entire dismantling work can be speeded up, which is reasonable.

  In addition, after the unloading stage 9, the temporary elevator, and the frame scaffolding 10 are installed around the lower building 3, the horizontal lower frame 3 surrounding the upper building 2 is supported by the lower building 3. Therefore, the construction work of the temporary frame 11 can be easily performed using these facilities.

  8 and 9 show another embodiment of the present invention. In this embodiment, as shown in FIG. 8A, the tower-shaped building 1 that is the object of the dismantling method is a high-pointed steel tower with an observation floor 17 on the intermediate floor. As shown in (B) and (C), the temporary frame 11 for horizontal fixation is installed on the observation floor 17, and the building upper frame 2 is jacked down using the observation floor 17 as a support frame. There is.

  That is, in this embodiment, as shown in FIG. 8B, the horizontal fixed temporary frame 11 is viewed on the observation floor 17 by work from the ground using a crane vehicle a such as a rough terrain. After being installed in a state supported by the floor 17, the upper surface of the observation floor 17 is used as the work floor 16, and the tower-like building 1 is located above the observation floor 17 and the building lower casing 3 including the observation floor 17. 8 (C), FIG. 9 (A), and (B), the upper building 2 is jacked down using the observation floor 17 of the lower building 3 as a support frame, as shown in FIGS. Thus, the building upper frame 2 is dismantled sequentially from the lower layer. Specifically, the upper surface of the building 2 is cut by using the upper surface of the observation floor 17 as the work floor 16, and the building upper frame 2 is lowered by the center hole jacks 13 provided at the four corners of the temporary frame 11, and the lower end is While being placed on the ground, the dismantling work is performed on the lowered part.

  If there is no sturdy foundation on the ground that is sufficient to support the weight of the building upper frame 2, as shown in FIGS. 8B, 9A, and 9B, an existing foundation on the ground (for example, The temporary beam 18 that connects between the pile head and the pile head footing) is installed, and the lower end of the jack-down building upper frame 2 is placed on the temporary beam 18 to perform the dismantling work.

  The tower-like building 1 has a shape that gradually becomes thinner as the building upper frame 2 goes upward. Therefore, the tower-like building 1 surrounds the building upper frame 2 and restrains horizontal movement of the building upper frame 2 for horizontal fixation. The temporary frame 11 is configured to reduce the planar size as the dismantling work proceeds.

  As a means for reducing the planar size of the temporary frame 11 as the dismantling work proceeds, for example, the hydraulic frame provided on each side has a structure in which each of the four sides of the temporary frame 11 having a rectangular shape in a plan view can be expanded and contracted. It is adopted to reduce the operation in synchronization with each other. The center hole jacks 13 provided at the four corners of the temporary frame 11 are configured to be swingable around a support shaft that is horizontal with respect to the temporary frame 11, and even if the planar size of the temporary frame 11 is reduced, the center hole The axial center of the jack 13 (additional suspension rod 13a) can be corrected to a vertical posture.

  When jackdown is repeated and the entire upper housing 2 is dismantled, as shown in FIG. 9C, the temporary frame 11 is dismantled and removed by work from the ground using the traveling dismantling machine c. Thereafter, as shown in FIG. 9D, the building lower housing 3 including the observation floor 17 is dismantled and removed. Other configurations and operations are the same as those of the embodiment of FIGS.

In addition, instead of the configuration in which the planar size of the temporary frame 11 is reduced as the dismantling work proceeds, hydraulic jacks for horizontal fixation that extend and contract toward the pillars 8 of the building upper frame 2 are provided at the four corners of the temporary frame 11. It is also possible to provide such a hydraulic jack to restrain the horizontal movement of the building upper frame 2. In this case, the position of the center hole jack 13 can be moved inward, and the axial center of the center hole jack 13 (additional suspension rod 13a) is corrected to a vertical posture by moving the center hole jack 13 inward. It will be.

  The dismantling method of the present invention includes an S-structure building upper frame and an SRC structure lower frame composed of a square columnar upper frame formed in the observation room and an antenna tower standing on the observation room. It can be used for dismantling high-aspect ratio buildings such as high-rise towers with tower towers and high steel towers that have an observation floor on the middle floor.

a, b crane truck c traveling demolition machine 1 tower building 2 building upper frame 3 building lower frame 4 observation room 5 upper frame 6 antenna tower 7 building lower frame column 8 building upper frame column 9 unloading stage 10 frame Scaffold 11 Temporary frame 12 Elevator shaft 13 Center hole jack 13a Additional suspension rod 13b Clamp mechanism 14 PC steel 15 Nut 16 Work floor 17 Observation floor 18 Temporary beam

Claims (4)

  The tower building is separated into the upper building and lower building, and the upper building is jacked down using the lower building as a support frame. A method for dismantling a tower-shaped building, comprising dismantling the lower building of the building by the work described above.   The tower building is separated into the upper building and lower building, and the upper building is jacked down using the lower building as a support frame. 2. The method for demolishing a tower building according to claim 1, wherein the building upper frame and the building lower frame left by the work from the ground are demolished in this order.   In a tower-like building with an upper frame and a lower building made up of an upper frame formed in the observation room and an antenna tower standing on the upper part of the observation room, the horizontal surrounding the upper structure of the building A temporary frame for fixing is supported on the lower housing of the building, separated into the upper and lower housings of the building, and the upper housing of the building is jacked down using the center hole jack installed on the temporary frame, Using the upper surface of the lower housing as the work floor, the upper frame below the observation room is disassembled sequentially from the lower layer, and then the antenna tower is removed by work from the ground using a crane truck, etc., then the observation room 3. The method for demolishing a tower building according to claim 2, wherein the building lower housing is demolished in this order.   After installing an unloading stage, a temporary elevator, and a frame scaffolding around the lower building of the building, a temporary frame for horizontally fixing surrounding the upper building of the building is provided in a state of being supported by the lower building of the building. Item 4. A method for dismantling a tower building according to Item 3.

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