JP2013155592A - Demolition method for border proximity underground concrete construction body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a demolition method for a border proximity underground concrete construction body, preventing physical injury caused by falling of an underground concrete construction body of which the lowermost edge is demolished.SOLUTION: When the lowermost edge of an underground concrete construction body 2 is demolished, the underground concrete construction body 2 is chipped except a building frame that supports the weight thereof and the remaining building frame is replaced with a temporary foundation 5 while forming the temporary foundation 5 by filling a chipping gap B with soil. When the lowermost edge of the underground concrete construction body 2 is demolished, the gap B having a size sufficient to install a jack 4 is formed by chipping under the underground concrete construction body 2 to support the weight of the underground concrete construction body 2 by the jack 4. Then, the lowermost edge of the underground concrete construction body 2 is chipped off and the chipping gap B is filled with soil to form the temporary foundation 5 for supporting the weight of the underground concrete construction body 2. Thereafter, the jack 4 is removed and the chipping gap B for installing the jack is replaced with the temporary foundation 5.

Description

  The present invention relates to a demolition method for a boundary-neighboring underground concrete structure that safely dismantles an underground concrete structure of a building that is close to the boundary, and at the same time further dismantles the demolition site.

  When building buildings are dismantled, start from the rooftop and then dismantle toward the lower floors. Next, it is common to perform the hierarchy in the ground sequentially toward the lower layer. However, there is a risk of collapse if the ground is exposed due to the dismantling of the ground floor. In addition, when a demolished building is in close proximity to an adjacent building, there is a risk of collapsing due to the dismantling of the underground hierarchy, and there is a risk of collapse, so the surroundings of the building building are It is necessary to perform earth retaining with the shape steel.

  Therefore, a method of dismantling the underground concrete structure from the lowermost edge is also conceivable so that earth retaining may not be performed, but this method is constructed on soft ground or ground wet with groundwater. If the ground is wet due to rain, the frictional resistance between the ground and the underground concrete structure decreases. Under such circumstances, if vibrations of transportation etc. are applied to the underground structure, the underground concrete structure may slide down. If such sliding occurs during work, there is a problem that causes a personal injury.

  It is an object of the present invention to provide a method for dismantling a boundary-underground underground concrete structure that prevents a personal accident due to sliding of the underground concrete structure during a chipping operation of the underground concrete structure.

  The present invention removes the bottom edge of the underground concrete structure of a concrete building close to the boundary to a certain height, and fills the gap to receive the underground concrete structure to form a temporary base. Boundary underground concrete that removes the underground concrete structure by carrying out the process of crushing the entire lowermost edge while crushing, crushing to the top and forming a raised ground by stepping up to the dismantling height. Deconstruction method of the structure, when the bottom edge of the underground concrete structure is dismantled, leave the skeleton that supports the weight of the underground concrete structure and crush it, and fill the cavity with soil and fill the ground The invention according to claim 1 is a demolition method for a near-underground concrete structure in which a remaining base is replaced with a temporary base while forming a temporary base that supports the concrete structure.

  In addition, the bottom end edge of the underground concrete structure of the concrete building where the boundary is close is removed to a certain height, and the ground that receives the underground concrete structure is filled in the cavity to form a temporary base. Boundary underground concrete structure that removes the underground concrete structure by performing the process of crushing the entire lowermost edge, then stepping up to the top of the demolished height to form the raised ground by removing the underground concrete structure. When dismantling the bottom edge of the underground concrete structure, the space for jack installation that supports the weight of the underground concrete structure is removed from the underground concrete structure, and the jack is placed in the clearance space. Install and support the weight of the underground concrete structure. After forming a temporary base to support the REITs construct is a dismantling method of the boundary proximity underground concrete constructs by removing the jack replace chipping space jack installed in the temporary base that the invention of claim 2.

  In the present invention, when dismantling the lowermost edge of the underground concrete structure, the bottom structure supporting the weight of the underground concrete structure is left behind, and the chip is filled with soil to support the underground concrete structure. By replacing the remaining frame with the temporary base while forming the temporary base, the underground concrete structure in the ground wetted by the soft ground or groundwater or rainwater will not slide down into the crevice gap. Since accidents can be prevented accurately, dismantling work can be performed safely.

  As in claim 2, when dismantling the bottom edge of the underground concrete structure, a space for jack installation that supports the weight of the underground concrete structure is formed in the underground concrete structure, and the jack is placed in the space. After installing and supporting the weight of the underground concrete structure, forming the temporary base to support the underground concrete structure by forming the temporary bottom to support the underground concrete structure by filling the chisel gap at the bottom edge of the underground concrete structure and filling the cavity By removing and replacing the chisel space for jack installation with a temporary base, the underground concrete structure in the ground wetted by soft ground or groundwater or rainwater will not slide into the chisel gap, resulting in personal injury during work Can be prevented accurately, so the dismantling work can be performed safely. Moreover, since the height can be adjusted with a jack even if the dimensional accuracy due to the chipping work is poor, the underground concrete structure can be properly received, and the jack can be easily removed from the underground concrete structure. Furthermore, since the number of jacks to be installed can be reduced as the dismantling of the underground concrete structure progresses upward, it is possible to reduce the space for jack installation, and to reduce the time for jack installation work and jack removal work. The faster you go, the shorter you can.

  It is a partially cutaway perspective view before construction showing a first embodiment of the dismantling method of the present invention.   It is a partial notch perspective view which similarly shows the underground concrete structure which demolished the upper floor.   It is a partial notch perspective view which shows the state which similarly demolished between concrete soils.   FIG. 5 is a partially cutaway perspective view showing a state where a frame supporting the weight of the underground concrete structure is also left and a cutting beam is stretched and the lowermost edge is chipped at the dismantling height.   FIG. 5 is a cross-sectional view of FIG. 4.   It is sectional drawing which similarly shows the state which filled the chisel space | gap with the soil, and formed the temporary base.   It is sectional drawing which similarly shows the state which performed the chipping of the remaining housings.   It is sectional drawing which similarly shows the state which filled the chisel space | gap with the soil, and formed the temporary base.   It is a partially notched perspective view which shows the state where the earth was similarly embanked to the dismantling height and the raising ground was formed.   It is sectional drawing which shows the state which carried out the chipping of the lower end edge of a demolition leaving the frame which similarly supports the weight of an underground concrete structure.   It is sectional drawing which shows the state which formed the temporary base which similarly filled the chisel space of FIG. 10 with the soil.   It is sectional drawing which shows the state which carried out the chipping of the remaining housing of a dismantling lower end surface similarly.   It is sectional drawing which shows the state in which the temporary foundation was similarly formed in the crevice gap, and it was embanked to the dismantling height, and the raising ground was formed.   It is sectional drawing which shows the state which similarly formed the raising ground by the dismantling and embankment of underground concrete structure to the ground surface.   The 2nd Example of the dismantling method by this invention is shown, It is sectional drawing which shows the state which performed the chipping of the jack installation space | gap.   It is sectional drawing which shows the state which similarly installed the jack in the chisel gap.   It is sectional drawing which shows the state which carried out the chipping of the jack installation space | gap similarly to another position of the underground concrete structure.   It is sectional drawing which shows the state which similarly attached the jack to another chisel space | gap.   It is sectional drawing which shows the state which crushed the lowermost edge of the underground concrete structure similarly supported by the jack, and filled the crevice space with the soil, and formed the temporary foundation.   It is a partially notched perspective view which shows the state which removed the jack similarly and embanked to the dismantling height, and formed the raising ground.   It is sectional drawing which shows the state which carried out the chipping of the jack installation space | gap similarly to the dismantling lower end edge.   It is sectional drawing which similarly shows the state which carried out the chipping of the jack installation space | gap to another position of the underground concrete structure while setting the jack in the space | gap space | gap.   It is sectional drawing which shows the state which crushed the lower end edge of the dismantling of the underground concrete construction similarly supported by the jack, and filled the crevice space with the soil, and formed the temporary foundation.   It is sectional drawing which shows the state which also embanked to the dismantling of the underground concrete construction body and the dismantling height, and formed the raising ground to the ground surface.

Next, a first embodiment of the present invention will be described in detail with reference to FIGS.
In FIG. 1, 1 is a concrete building constructed between adjacent buildings A, 2 is an underground concrete structure constructed in the ground of the concrete building 1, and the underground concrete structure 2 is a concrete building. The foundation and basement to support 1.

  Reference numeral 3 denotes a large number of cut beams stretched between opposing wall surfaces of the underground concrete structure 2, and the cut beams 3 prevent the wall body from collapsing due to earth pressure.

  As shown in FIG. 2, the concrete building 1 first dismantles the upper floor above the ground. Then, when the upper floor is dismantled, the underground concrete structure 2 is disassembled after the cut beams 3 are stretched between the opposing wall surfaces as shown in FIG.

  As shown in FIG. 3, the underground concrete structure 2 is first dismantled by tearing the concrete soil space 6 at the bottom of the underground concrete structure 2. After the dismantling of the concrete soil 6, as shown in FIG. 4, the lowermost edge of the underground concrete structure 2 is removed to a certain dismantling height. This chiseling is performed leaving a skeleton that can support the weight of the underground concrete structure 2. Even if the remaining frame loses the frictional resistance with the peripheral wall surface of the ground, it is assumed that it has the strength to receive the weight of the underground concrete structure and the bottom area where the underground concrete structure 2 does not sink in the ground.

  In the above description, the frame that receives the underground concrete structure 2 is a wall body. However, the underground concrete structure 2 may be received by leaving a pillar. Needless to say, the weight may be received. Then, as shown in FIG. 6, the chipping gap B in which the chipping has been performed is filled with soil to form a temporary base 5 that supports the weight of the underground concrete structure 2.

  Subsequently, as shown in FIG. 7, the remaining frame of the underground concrete structure 2 supported by the temporary base 5 filled in the chip space B is chipped. When the weight of the underground concrete structure 2 is supported by the temporary base 5 alone, as shown in FIG. 8, the whole of the remaining frame is detonated, and the chisel void B is filled with the soil to form the temporary base 5. To do.

  Moreover, when the underground concrete structure 2 cannot be supported only by the temporary base 5, it is performed leaving the frame which supports a weight. And if the underground concrete structure 2 is supported only by the temporary base 5, as shown in FIG. 9, the earth will be embanked to the dismantling height and the raised ground 8 will be formed.

  In this way, when the disassembly of the lowermost edge is completed, as shown in FIG. 10, the cut beam 3 is removed and the lower end edge of the dismantling is peeled in the same manner as described above. At this time, since the weight of the underground concrete structure 2 is reduced by the amount of the above-mentioned dismantling, the frame receiving the weight of the underground concrete structure 2 can be reduced. This will reduce the time and labor of the framing of the frame surrounded by the temporary base 5. Then, as shown in FIG. 11, the temporary base 5 is formed by filling the chipped gap B with the soil.

  Further, as shown in FIG. 12, the remaining frame of the underground concrete structure 2 received by the temporary base 5 filled in the crevice gap B is clawed. When the temporary foundation 5 is able to support the weight of the underground concrete structure 2 during the chipping, the entire remaining casing is chiseled, and the chipping void B is filled with soil to form the temporary base 5.

  When the formed temporary base 5 cannot support the weight of the underground concrete structure 2, the temporary base 5 is formed by filling the chipping and chipping gap B with the soil leaving a part of the frame. When the temporary base 5 capable of supporting the weight of the underground concrete structure 2 is formed by repeating such an operation process, the entire remaining frame is crushed and the crevice B is filled with soil and the temporary base 5 Receive medium concrete structure 2. Next, as shown in FIG. 13, embankment is performed up to the dismantling height to form a raised ground 8.

  By repeating such a process and performing the embankment while dismantling the bottom edge of the underground concrete structure 2 sequentially upward, the underground concrete structure 2 is dismantled extremely safely and the ground is grounded by the embankment. It can be raised to the surface to form the further ground 7 as shown in FIG.

Next, a second embodiment will be described in detail with reference to FIGS.
First, as shown in FIGS. 15 to 18, chipping is performed to cut out a gap in which the jack 4 is installed at the lowermost edge of the underground concrete structure 2. This chipping is performed based on the number of jacks that can support the weight of the underground concrete structure 2. The underground concrete structure 2 is supported by jacking up the jack 4 in the chisel gap B formed in this way and then jacking up. At this time, if necessary, a jack base (not shown) is laid on the lower end of the jack 4 to expand the pressure receiving area so that the jack 4 does not sink into the ground.

  The underground concrete structure 2 is held by the large number of jacks 4 attached as described above, and as shown in FIG. 18, the lowermost edge of the underground concrete structure 2 is clawed, and the crushing is performed. As shown in FIG. 18, a temporary base 5 that receives the weight of the underground concrete structure 2 is formed by filling the chipped void B with soil.

  As shown in FIGS. 19 and 20, the weight of the underground concrete structure 2 is received by the temporary base 5, the jack 4 holding the underground concrete structure 2 is removed, and the jack 4 is installed. In addition to filling the voids that have been filled with soil, embankment is performed to the dismantling height to form the raised ground 8.

  When the disassembly of the lowermost edge is completed in this way, as shown in FIG. 21, the cut beam 3 is removed, and the gap for attaching the jack 4 to the disassembly lower end edge is crushed in the same manner as described above. At this time, since the weight of the underground concrete structure 2 is reduced by the amount of dismantling, the number of jacks 4 receiving the weight of the underground concrete structure 2 is reduced. As a result, the time required for the installation of the jack 4 and the jack 4 for the time-consuming installation of the jack 4 is shortened as the disassembly progresses upward, so that the construction period is shortened and the disassembly cost can be reduced.

  Then, as shown in FIG. 22, the jack 4 is installed in the chisel gap B, and the dismantling lower end edge is chiseled and the chisel gap B is filled with soil to form the temporary base 5. Subsequently, as shown in FIG. 23, the jack 4 is removed, and at the same time, the demolished high-level embankment is performed to form the raised ground 8.

  By repeating such a process and performing the embankment while dismantling the bottom edge of the underground concrete structure 2 sequentially upward, the underground concrete structure 2 is dismantled extremely safely and the ground is grounded by the embankment. It can be raised to the surface to form the further ground 7 as shown in FIG.

DESCRIPTION OF SYMBOLS 1 Concrete building 2 Underground concrete structure 3 Cut beam 4 Jack 5 Temporary base 6 Concrete soil gap 7 Clearance 8 Raised ground A Adjacent building B Crevice gap

Claims (2)

  Remove the bottom edge of the underground concrete structure of the concrete building close to the boundary to a certain height and fill the soil into the gap to receive the underground concrete structure to form a temporary base. Demolition of the near-underground concrete structure that removes the underground concrete structure by performing the process of crushing the entire rim and then embedding it up to the dismantling height to form the raised ground by stepping upwards, and then removing the underground concrete structure. It is a construction method, and when the bottom edge of the underground concrete structure is dismantled, it is left to leave the skeleton that supports the weight of the underground concrete structure, and the ground is filled with soil by filling the cavity. A demolition method for a concrete structure near the boundary, characterized by replacing the remaining frame with a temporary foundation while forming a temporary foundation to support.   Remove the bottom edge of the underground concrete structure of the concrete building close to the boundary to a certain height and fill the soil into the gap to receive the underground concrete structure to form a temporary base. Demolition of the near-underground concrete structure that removes the underground concrete structure by performing the process of crushing the entire rim and then embedding it up to the dismantling height to form the raised ground by stepping upwards, and then removing the underground concrete structure. When dismantling the bottom edge of the underground concrete structure, the space for the jack installation that supports the weight of the underground concrete structure is provided in the underground concrete structure, and the jack is installed in the chip space. In addition to supporting the weight of the underground concrete structure, the bottom edge of the underground concrete structure is chiseled, and the void is filled with soil to fill the underground concrete. After forming a temporary base to support the constructs, demolishing method boundary proximity underground concrete constructs by removing the jack and replaces the chipping space jack installed in the temporary foundation.

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