JP2019214853A - Shatter-proof demolition method for waste incineration plant - Google Patents

Abstract

To provide a dismantling method for waste incineration plant which can maintain shatter-proof nets and sheets without removing them during dismantling of a building, and is easy to remove.SOLUTION: It includes: a step (S1) to form a front chamber that serves as an exit for moving out for dismantled objects; a step (S2) to erect multiple construction elevators on both sides of the building; a step (S3) to install curing scaffolds on the front, rear, left and right sides of the building; a step (S4) to install soundproof panels outside the curing scaffolds; a step (S5) to lift the roof trusses with a crane and mount the leg parts to the elevator platforms of the construction elevators; a step (S6) to mount shatterproof nets and sheets on the roof trusses; a step (S7) to dismantle the building with heavy equipment moved into the building; a step (S8) to descend the roof trusses with the construction elevators and remove the construction elevators and the upper parts of the curing scaffolds; a step (S9) to dismantle the basement of the building; and a step(S10) to remove the remaining curing scaffolds, construction elevators and roof trusses.SELECTED DRAWING: Figure 15

Description

  The present invention relates to a scattering prevention dismantling method of a waste cleaning plant, and more specifically, covers a side wall portion of a building with a soundproof panel, covers a roof portion with a roof truss with a scattering prevention net and a sheet, and does not scatter dust to the outside of the building. Regarding the dismantling method of Incineration Plant.

  When dismantling a Incineration Plant, the entire building is covered with tents. However, waste management plants have a width of 70 m, a depth of 100 m, and a height of 40 m, for example, and require a great deal of man-hours to remove the foundation after the construction and the foundation built around the building to set up a tent. I need. As an example, the foundation is a concrete block having a width of 3 m, a height of 1.7 m, and a length of 70 m. Such foundations are heavy and difficult to handle.

  Patent Literature 1 discloses that a temporary roof is provided in a building of a waste cleaning plant. The temporary roof is obtained by attaching a sheet for preventing scattering to a frame body. It also states that during dismantling, the building will be under negative pressure with negative pressure equipment, and a temporary tent will be provided on one side of the building to serve as an entrance for heavy equipment. However, since the temporary roof is fixed to the building, it must be removed when the side walls are dismantled. A construction method that can maintain and dismantle the temporary roof while dismantling the side walls is desired.

JP 2012-136936 A

  SUMMARY OF THE INVENTION An object of the present invention is to provide a method for dismantling a cleaning plant in which a scattering prevention net and a sheet covering a roof portion can be maintained without being removed during a dismantling period of a cleaning plant building, and can be easily removed.

  According to the scattering prevention dismantling method of a waste cleaning plant according to the present invention, a step (S1) of forming a front room serving as a discharge port for dismantled articles on one side of a building, and a plurality of construction elevators are erected on both sides of the building. Step (S2), installing a curing scaffold on the front, rear, left and right sides of the building (S3), installing a soundproofing panel outside the curing scaffold (S4), lifting the roof truss with a crane, (S5), attaching the scattering prevention net and sheet to the roof truss (S6), and disassembling the building with heavy equipment put into the building (S7). Lowering the roof truss with the construction elevator and removing the upper part of the construction elevator and the upper part of the curing scaffold (S8), dismantling the underground part of the building (S9), and the remaining curing scaffold, An elevator, A step (S10) for removal and roots truss, and wherein the is provided.

  In the step of dismantling the building (S7), the reinforced concrete part is dismantled while being sprayed with water.

According to the scattering prevention dismantling method of a waste cleaning plant according to the present invention,
(1) The construction elevator is installed on both sides of the building (S2), and the legs of the roof truss are attached to the lifting platform of the construction elevator (S5). Can be performed.
(2) Since the roof truss is fitted with a scattering prevention net and sheet (S6), the net can prevent dismantled materials (especially tension bolts, etc.) from jumping out, and additionally, the sheet can disperse fine dust outside. Can also be prevented.
(3) Curing scaffolds are provided on the front, rear, left and right sides of the building (S3), and soundproof panels are attached outside (S4), so that not only sound insulation but also dust can be prevented from going outside.
(4) Since the front room is formed on one side of the building (S1) and used as a loading port by truck, dust can be prevented from coming out of the front room when loading the waste.
(5) The roof truss can be lowered to the ground level by the construction elevator, and the roof truss can be disassembled.

  At the time of dismantling the Incineration Plant building, the parts made of reinforced concrete were dismantled while sprinkling water, so that scattering of dust can be prevented well.

1 is a plan view of a building to be dismantled in an embodiment of a scattering prevention dismantling method of a cleaning plant according to the present invention. FIG. 2 is a view as viewed from an arrow aa in FIG. 1. FIG. 2 is a view taken along the arrow bb in FIG. 1. 1 is a plan view of a building to be dismantled in an embodiment of a scattering prevention dismantling method of a cleaning plant according to the present invention. FIG. 5 is a view taken along the arrow line aa in FIG. 4. FIG. 5 is a view taken in the direction of arrow bb in FIG. 4. 1 is a plan view of a building to be dismantled in an embodiment of a scattering prevention dismantling method of a cleaning plant according to the present invention. FIG. 8 is a view taken along the line aa in FIG. 7. FIG. 8 is a view taken in the direction of arrow bb in FIG. 7. It is a top view which shows the relationship of the leg part of a roof truss, the raising / lowering mounting base of a construction elevator, and a curing scaffold. It is a top view which shows the relationship between a curing scaffold and a construction elevator. It is a detailed view showing the vicinity of the foot of the curing scaffold. It is a detailed view showing the vicinity of the top of the curing scaffold. It is a figure showing composition of a roof truss. It is a flowchart of the scattering prevention disassembly method of the Incineration plant of this invention. It is a detailed flowchart of the stage of dismantling the building of FIG.

  Hereinafter, with reference to the accompanying drawings, a scattering prevention and disassembly method of a cleaning plant according to the present invention will be described in detail.

  FIG. 1 is a plan view of a building 50 to be dismantled in one embodiment of a scattering prevention dismantling method of a cleaning plant according to the present invention. FIG. 1 shows the dismantling of the construction sections A and B of the building 50. Here, the building 50 has a length of about 130 m in the east and west and about 70 m in the north and south. For explanation, coordinates A to N are given in the east-west direction, and circles 1 to 12 are given in the north-south direction. The building 50 was divided into four sections A, B, C, and D from the east to the west. On the east side of the building 50, the truss-structured front room 25 was formed to serve as a carry-out port. The surroundings of the building 50 including the front room 25 were covered with the curing scaffold 5. The curing scaffold 5 was represented by a small square with a diagonal line, and covered all sides of the building 50, from the ground to the roof, as shown in FIG. A rectangular soundproof panel 4 is attached to the outside of the curing scaffold so that sound does not leak outside.

  The roof truss 2 is provided on the roof of the building 50. The roof truss 2 is covered with a scattering prevention net and a sheet 1 to prevent dust and objects from scattering to the outside. As shown in FIG. 1, since the width of the building 50 is not constant, roof trusses 2 having different lengths are prepared. The east section A is provided with three long roof trusses 2, the next section is provided with nine other roof trusses 2, and the next section is provided with another length of 6 trusses. The roof truss 2 is arranged, and on the west side, six roof truss 2 of another length are arranged. Since the construction elevators 3 are provided at both ends of the roof truss 2, 24 units (= 3 + 9 + 6 + 6) are provided on the north side and 24 units are provided on the south side. The construction elevator 3 is installed inside the curing scaffold 5 and is not visible from the outside. It is assumed that 24 elevators for construction 3 are centrally controlled and are simultaneously moved up and down by an instruction from one place. As shown in FIG. 1, a plurality of heavy machines are put into the building 50, and the front room 25 performs sorting and subdivision. The heavy equipment in the front room 25 is SK480 Magne.

  FIG. 2 is a view as viewed in the direction of arrows aa in FIG. 1. There is a garbage bunker 17 in the underground part 30 of the construction zone A. Above that is a garbage crane, which grabs garbage and throws it into the boiler 14 in the construction zone B. Behind the boiler 14 is a kiln (rotary kiln). The three boilers 14 are provided at coordinates (I, 3), (I, 5), and coordinates (I, 7). The boiler 14 is dismantled by the heavy equipment 7. The height of the building 50 is about 30 m, and the height (H) of the roof truss 2 is about 40 m. A curing scaffold 5 is provided on all sides of the building 50, and a soundproof panel 4 is attached to the outside thereof. The roof truss 2 is mounted on a construction elevator having legs on both sides standing inside the curing scaffold 5.

FIG. 3 is a view taken in the direction of arrows bb in FIG. 1. The roof truss 2 is a gable type having a truss structure made of steel. The roof truss 2 is assembled on the ground, lifted by a crane, and the legs are attached to the lifting platform 11 of the construction elevator 3. The tall heavy equipment 7 is an SK3500 equipped with a boom of 45 m and reaches a height of 30 m in the building 50. The heavy equipment 7 on the right is a ZX1000 separator (3.5 m ³ ). From the east to the west, the hollow part is dismantled, and at that time, the outer periphery is left as a one-span retaining wall. For reinforced concrete (RC construction), dismantling is performed while sprinkling water from the tip of a sprinkler or heavy equipment. Although not shown, an air suction hose, a large suction fan, a water treatment device, and a truck or a trailer provided with an air filter are arranged to make the inside of the building 50 a negative pressure.

  FIG. 4 is a plan view of a building to be dismantled in one embodiment of the scattering prevention dismantling method of a cleaning plant according to the present invention. FIG. 5 is a view as viewed in the direction of arrows aa in FIG. 4. FIG. 6 is a view taken in the direction of arrow bb in FIG. 4 to 6 show the dismantling of the sections C and D of the building 50. As shown in FIG. 5, three dust collectors 10 and temperature reducing pipes 24 are installed in the construction zone C, and in the construction zone D, the condenser 23, the induction fan 18, the circulation fan 12, A generator and a turbine (not shown) are installed on it. From the east side to the west side, the hollow part is dismantled. At this time, the outer periphery is left as a one-span retaining wall, and after the hollow part disassembly, the surrounding walls are dismantled. Parts of reinforced concrete construction (RC construction) are dismantled while sprinkling water. The waste collected in the front room 25 is loaded on a truck that has entered by opening the door 26 and is carried out.

  FIG. 7 is a plan view of a building to be dismantled in one embodiment of the scattering prevention dismantling method of a cleaning plant according to the present invention. FIG. 8 is a view taken in the direction of arrow aa in FIG. 7. FIG. 9 is a view on arrow bb in FIG. 7. 7 to 9 show the dismantling of the underground portions of the construction sections A to D of the building 50. As shown in FIG. 7, when entering the dismantling of the underground part, the front room 25 has been removed, and the gala is carried out by the truck 13 from the east exit. As shown in FIGS. 8 and 9, the curing scaffold 5 is also largely removed from the upper part, and the roof truss 2 is lowered to near the ground. The underground part 30 has a depth of about 10 m. In addition, the part of reinforced concrete construction (RC construction) is dismantled while sprinkling water.

  FIG. 10 is a plan view showing the relationship among the legs 8 of the roof truss 2, the lifting platform 11 of the construction elevator 3, and the curing scaffold 5. The curing scaffold 5 is attached to the outer wall 16 of the building 50 of the Incineration Plant, and the scaffold plate 19 is attached with the brace 27. The soundproof panel 4 is attached to the outside of the curing scaffold 5. The guide rail 6 is long and has a ladder shape extending vertically from the ground, and a rack 22 is attached to the center. The rack 22 meshes with a pinion (not shown, a driving gear) driven by an elevating motor 21 provided at the bottom of the elevating table 11. The leg 8 of the roof truss 2 is fixed to the elevating stage 11. The lifting pedestal 11 can be lowered downward, and the roof truss 2 can be quickly lowered. In the vicinity of the top of the construction elevator 3, the curing scaffold 5 is divided into right and left. The curing scaffold 5 is fixed to the building 50 with the connecting fitting 9. The construction elevator 3 is fixed to the curing scaffold 5.

  FIG. 11 is a plan view showing a relationship between the curing scaffold 5 and the construction elevator 3. After moving the lifting platform 11 to the vicinity of the top of the building 50, the worker reciprocates in the space below the lifting platform 11, so the scaffold plate 19 is attached, and the curing scaffold 5 is divided into right and left. I can do that. When the elevating platform 11 is lowered, the scaffold plate 19 in this portion is removed.

  FIG. 12 is a detailed view showing the vicinity of the foot of the curing scaffold 5. The curing scaffold 5 is attached to the outside of the outer wall 16 of the building 50. The soundproof panel 4 is attached to the outside of the curing scaffold 5. The brace 27 of the curing scaffold 5 is fixed by the free clamp 20, and the scaffold plate 19 is attached. The long guide rail 6 having a ladder shape is vertically erected. The curing scaffold 5 is fixed to the building 50 with the connecting fitting 9. The construction elevator 3 has a predetermined length and is connected in the upward direction.

  FIG. 13 is a detailed view showing the vicinity of the top of the curing scaffold 5. The leg 8 of the roof truss 2 is fixed to the elevating table 11 of the construction elevator 3. The soundproof panel 4 is not provided in the portion above the roof, and the outside of the curing scaffold 5 is covered with the scattering prevention net and the sheet 1 (1b). When the roof truss 2 is lowered, the scattering prevention net and the sheet 1 are also lowered, so that the upper part of the curing scaffold 5 is also sequentially removed. An elevating motor 21 and a pinion (gear) are provided at the bottom of the elevating platform 11, and the pinion meshes with the rack 22 to move the elevating platform 11 up and down. When the wall of the building 50 is lowered, the connection metal fitting 9 connecting the wall to be lowered and the curing scaffold 5 is removed. The leg 8 of the roof truss 2 is connected to the elevating platform 11 with one contact in the left-right direction.

  FIG. 14 is a diagram illustrating the configuration of the roof truss 2. The roof truss 2 is not limited to this, but is a member having a length L of 5 m. As shown in (a), when four members are connected, the length B1 of the base can be 15.5 m. As shown in (b), when twelve members are connected, the length B2 of the base can be made 53.5 m. Thus, even if the width of the building 50 is not constant, the length of the roof truss 2 can be adjusted. Adjustment members (trusses) with short dimensions are also provided. As shown in (b), the scattering prevention net and the sheet 1 prevent the fragments and the tension bolts from scattering to the outside, have a coarse mesh size (1 to 3 cm), have a strong impact resistant net 1a, and are damaged by the impact. It is made of a sheet 1b which is easy to perform, but does not pass through dust and dust, and is soundproof and waterproof (rain). A sheet 1b for preventing dust scattering is provided on the upper side of the roof truss 2, and a net 1a for preventing pieces from flying out is provided below the roof truss 2. In the present embodiment, the scattering prevention net and the sheet 1 are constituted by two sheets of the net 1a and the sheet 1b, but may be constituted by one if they are tough and dust can be prevented. The gable roof truss 2 allows snow and rain to flow more easily than a flat roof, and can reduce the load on the roof. Also, the internal space can be widened.

  FIG. 15 is a flowchart of the scattering prevention dismantling method of the cleaning plant according to the present invention. S1 is a stage in which the front room 25 is formed of a truss member on one side of the building of the Incineration Plant. The front room 25 is used as a doorway for heavy equipment, a carry-out port for trucks, a small work space, and the like. The front room 25 is covered with soundproof panels on the side surfaces and the roof is covered with the scattering prevention net and the sheet 1, so that scattering of dust can be reduced. S2 is a stage in which a plurality of construction elevators 3 are erected on both sides of the building from the ground to the roof. The construction elevator 3 supports the roof truss 2 to facilitate its lowering. S3 is a stage in which the curing scaffold 5 is installed on the front, rear, left and right sides of the building from the ground to the roof. The curing scaffold 5 is installed so as to cover the construction elevator 3 and is fixed to the building. S4 is a step of installing a soundproof panel outside the curing scaffold. S5 is a stage in which the roof truss 2 is lifted by a crane and attached to the installation base 11 of the construction elevator 3. S6 is a step of attaching the scattering prevention net and the sheet 1 to the roof truss 2. S7 is a stage in which the building 50 is dismantled by heavy machinery. S8 is a stage in which the roof truss 2 is lowered and the curing scaffold 5 and the upper part of the construction elevator 3 are removed. It is not necessary to wait until all the ground parts of the building are dismantled, and S8 may be executed after the building reaches the first floor. S9 is a stage of removing the underground part of the building 50. The roof truss 2 covers the site of the removed building even when the underground removal phase is entered. S10 is a stage where the remaining curing scaffold 5, the roof truss 2, and the construction elevator 3 are removed.

  FIG. 16 is a detailed flowchart of the step (S7) of dismantling the building of FIG. S7a is a stage of preceding gas cutting of the work sections A, B, C, and D. Since the preceding gas cutting is time-consuming due to manual operation, it is desirable to perform the cutting in parallel with S1 to S6. For example, a square hole may be formed in the H steel web, spiral cuts may be formed at the top and bottom of the main pipe, and the kiln may be cut into three parts. Spiral cuts tend to knock down the main pipe in any direction compared to horizontal rest cuts. S7b is a stage of the hollow dismantling of the work sections A and B. S7c is a stage where the wall of the work section A is knocked down. The wall is dropped without increasing the height to 3 to 6 m. S7d is a stage of the hollow dismantling of the work section C. S7e is a stage where the wall of the construction section B is overturned. S7f is a stage of the hollow dismantling of the work section D. S7g is a stage where the work sections C and D are knocked down. S7h is a stage where the walls of the first floor of the construction sections A to D are collapsed.

  INDUSTRIAL APPLICABILITY The present invention is suitable as a dismantling method of a cleaning plant that can quickly descend a roof truss covered with a scattering prevention net and a sheet.

DESCRIPTION OF SYMBOLS 1 Shatter prevention net and sheet 1a Net 1b sheet 2 Roof truss 3 Construction elevator 4 Soundproof panel 5 Curing scaffold 6 Guide rail 7 Heavy machine 8 Leg 9 Connecting metal fitting 10 Dust collector 11 Elevating mounting table 12 Circulating fan 13 Truck 14 Boiler 15 Kiln 16 Outer wall 17 Garbage bunker 18 Induction fan 19 Scaffold plate 20 Free clamp 21 Elevating motor 22 Rack 23 Condenser 24 Dewarping tube 25 Front room 26 Door 27 Brace 30 Underground part 50 Building S1 to S10 Each step of shatterproof dismantling method S7a -S7h Detailed stages of building dismantling (S7)

Claims (2)

Forming a front room on one side of the building as an exit for dismantling the building (S1);
Erecting a plurality of construction elevators on both sides of the building (S2);
Installing curing scaffolds on the front, rear, left and right sides of the building (S3);
Installing a soundproof panel outside the curing scaffold (S4);
Lifting the roof truss with a crane and attaching the legs to the elevator platform of the construction elevator (S5);
Attaching a shatterproof net and a sheet to the roof truss (S6);
Dismantling the building with heavy equipment put into the building (S7);
Lowering the roof truss with the construction elevator and removing the upper part of the construction elevator and the upper part of the curing scaffold (S8);
Dismantling the underground part of the building (S9);
Removing the remaining curing scaffold, construction elevator and roof truss (S10);
A scattering prevention dismantling method for a waste cleaning plant, which is provided with
  The method of claim 1, wherein in the step of dismantling the building (S7), the part made of reinforced concrete is dismantled while spraying water.

Images