Method for dismantling old structure in narrow space

Abstract

The invention belongs to the technical field of constructional engineering, and discloses a method for dismantling an old structure in a narrow space, which comprises the following steps of: S1, adding a temporary isolation platform between a to-be-dismantled structure and a stand column, and then releasing the connection between the to-be-dismantled structure and the stand column; s2, a jacking assembly is installed, and after jacking operation is conducted on the to-be-dismantled structure through the jacking assembly, a transverse moving assembly is installed; s3, the to-be-dismantled structure is moved to the operation area through the transverse moving assembly, and fixed-point dismantling of part of the structure is conducted; and S4, the step S3 is repeated until all the to-be-dismantled structures are dismantled. According to the method, it can be guaranteed that the influence on the environment and surrounding operation is reduced when the old building with the limited construction space is demolished, the demolishing efficiency is high, and operation is easy and convenient.

Description

Technical Field

[0001] The invention relates to the technical field of construction engineering, and in particular to a method for dismantling an old structure in a narrow space. Background Art

[0002] At present, with the rapid development of the construction industry, new projects have been rapidly reduced, while there are more and more urban renewal projects, and there are many construction problems for a large number of old buildings that need to be demolished, rebuilt, and expanded in the renewal projects. Unlike new buildings, the above-mentioned demolition projects need to be constructed in the encirclement of various other buildings. Not only is the size of the construction site limited, but the surrounding environment is extremely sensitive to dust, noise and other pollution generated during the construction process. At the same time, the operating status around the operation will also be affected by it. Therefore, the use of conventional demolition methods to demolish such old buildings is subject to great operational restrictions. In the prior art, general demolition construction usually uses large-scale lifting machinery and other hoisting equipment, and cooperates with corresponding cutting and crushing technical means to dismantle the building structure at the original site, and hoist it to the ground in blocks for subsequent processing. However, such means not only cannot meet the requirements of the demolition construction space of old buildings in a small space in urban renewal projects, but also have adverse effects on the surrounding areas. Therefore, how to ensure that the demolition of old buildings with limited construction space has a reduced impact on the environment and surrounding operations, and the demolition efficiency is high and the operation is simple is a problem that people in this field need to solve. Summary of the invention

[0003] The purpose of the present invention is to provide a method for dismantling old structures in a small space, so as to ensure that the impact on the environment and surrounding operations during the demolition of old buildings with limited construction space is reduced, and the demolition efficiency is high and the operation is simple.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] A method for dismantling an old structure in a small space, comprising the following steps:

[0006] S1. After adding a temporary isolation platform between the structure to be demolished and the column, the connection between the two is removed;

[0007] S2, installing the jacking assembly, and after the jacking operation of the structure to be demolished is performed by the jacking assembly, installing the transverse movement assembly;

[0008] S3, moving the structure to be demolished to the working area through the transverse movement assembly to perform fixed-point demolition of part of the structure;

[0009] S4. Repeat step S3 until all structures to be demolished are demolished.

[0010] Optionally, step S2 includes:

[0011] S2.1. Install the jacking assembly on the side of the top of the column;

[0012] S2.2. Install lateral limit stops at both ends of the structure to be demolished;

[0013] S2.3, start the jacking assembly so that the jacking assembly performs jacking operation on the structure to be demolished;

[0014] S2.4. Install the lateral movement assembly above the temporary isolation platform.

[0015] As an option, the jacking assembly includes a jacking corbel and a jacking jack, the jacking corbel is respectively arranged at the top of the column and the bottom of the structure to be demolished, the jacking jack is located between the jacking corbels on the top of the column and the bottom of the structure to be demolished, and the jacking jack can be extended and retracted to lift or lower the structure to be demolished.

[0016] As an option, the lateral limiter can fix the lateral end of the structure to be demolished.

[0017] As an option, the transverse movement assembly includes a base beam, a track and a sliding structure. The base beam can be erected on the jacking bracket, the track is fixed on the base beam, the sliding structure is slidably arranged on the track and is arranged below the structure to be demolished, and the structure to be demolished can move on the track under the action of the sliding structure.

[0018] Optionally, the transverse movement assembly further includes a temporary support rod and a connecting rod. The temporary support rod can be installed in a vacant position of the structure to be demolished for support. The connecting rod is arranged below the structure to be demolished and can provide connection for various parts of the structure to be demolished.

[0019] Optionally, the transverse movement assembly is further provided with a push jack, which is located on the track and can be extended and retracted to push the structure to be demolished toward the working area.

[0020] As an option, when the lifting assembly is lifted, the sliding structure will not contact the track; when the lifting assembly is retracted, the sliding structure can contact the track.

[0021] As an option, the lengths of the foundation beam and the track along the sliding direction are both greater than the length of the temporary isolation platform, and the foundation beam and the track both extend into the working area.

[0022] Optionally, the working area is located at one side of the structure to be demolished, and the working area is supported from below by side supports.

[0023] Beneficial effects of the present invention:

[0024] The provision of a temporary isolation platform in the present invention can ensure the normal operation of the commercial entities, public services and other functional areas in the original building, and will not affect the traffic, etc., and the method of cumulative jacking and sliding and local repeated demolition in the present invention can control the demolition construction area to be carried out in a smaller range, thereby making full use of the narrow space resources in the central urban area and reducing the impact on the surrounding buildings. In addition, the process of horizontal movement and fixed-point demolition using the horizontal movement component has the advantages of small footprint, low noise and pollution during use, low construction cost and high degree of automation, and can achieve continuous, rapid and safe demolition effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a front view schematic diagram of a structure to be demolished in a method for demolishing an old structure in a narrow space according to an embodiment of the present invention;

[0026] Figure 2 is a side view schematic diagram of a structure to be demolished in a method for demolishing an old structure in a narrow space according to an embodiment of the present invention;

[0027] Figure 3 is a front view schematic diagram after the jacking assembly is installed in the method for dismantling an old structure in a narrow space according to an embodiment of the present invention;

[0028] Figure 4 It is a side view schematic diagram after the jacking assembly and part of the lateral movement assembly are installed in the method for dismantling an old structure in a narrow space according to an embodiment of the present invention;

[0029] Figure 5 is a front view schematic diagram of step S2 in the method for dismantling an old structure in a narrow space according to an embodiment of the present invention;

[0030] Figure 6 is a side view schematic diagram of step S2 in the method for dismantling an old structure in a narrow space according to an embodiment of the present invention;

[0031] Figure 7 is another front view schematic diagram of a structure to be demolished in the method for demolishing an old structure in a narrow space according to an embodiment of the present invention;

[0032] Figure 8 is another front view schematic diagram of step S2 in the method for dismantling an old structure in a narrow space according to an embodiment of the present invention;

[0033] Fig. 9 is a top view schematic diagram of step S2 in the method for dismantling an old structure in a narrow space according to an embodiment of the present invention;

[0034] Fig.10is a front view schematic diagram of step S3 in the method for dismantling an old structure in a narrow space according to an embodiment of the present invention;

[0035] Fig.11 is a top view schematic diagram of step S3 in the method for dismantling an old structure in a narrow space according to an embodiment of the present invention;

[0036] Fig.12 is a front view schematic diagram of step S4 in the method for dismantling an old structure in a narrow space according to an embodiment of the present invention;

[0037] Fig.13 is a top view schematic diagram of step S4 in the method for dismantling an old structure in a narrow space according to an embodiment of the present invention;

[0038] Fig.14 It is a front view schematic diagram of a portion of the demolition in step S4 of the method for demolishing an old structure in a narrow space according to an embodiment of the present invention;

[0039] Fig.15 It is a top view schematic diagram of a portion of the demolition in step S4 of the method for demolishing an old structure in a narrow space according to an embodiment of the present invention;

[0040] Fig.16 is a front view schematic diagram of the method for dismantling an old structure in a narrow space according to an embodiment of the present invention, in which step S4 is performed to dismantle a part and then step S3 is repeated;

[0041] Fig.17 is a top view schematic diagram of the method for dismantling an old structure in a narrow space according to an embodiment of the present invention, in which step S4 dismantles a part and then step S3 is repeated;

[0042] Fig.18 is a front view schematic diagram of removing another part in step S4 of the method for removing an old structure in a narrow space according to an embodiment of the present invention;

[0043] Fig.19 is a top view schematic diagram of removing another part in step S4 of the method for removing an old structure in a narrow space according to an embodiment of the present invention;

[0044] Fig. 20 is a front view schematic diagram of the last part of the demolition in step S4 of the method for demolishing an old structure in a narrow space according to an embodiment of the present invention;

[0045] Fig.21 is a schematic top view of the last part of the demolition in step S4 of the method for demolishing an old structure in a narrow space according to an embodiment of the present invention;

[0046] Fig. 22 is a front view schematic diagram of the complete demolition in step S4 of the method for demolishing an old structure in a narrow space according to an embodiment of the present invention;

[0047] Fig.23 It is a top view schematic diagram of the complete demolition in step S4 of the method for demolishing an old structure in a narrow space according to an embodiment of the present invention.

[0048] In the figure:

[0049] 100-structure to be demolished; 200-column; 300-operation area; 400-side support;

[0050] 10-temporary isolation platform; 20-lifting assembly; 21-lifting bracket; 22-lifting jack; 30-lateral limit; 40-foundation beam; 50-track; 60-temporary support rod; 70-sliding structure; 80-push jack; 90-connecting rod. DETAILED DESCRIPTION

[0051] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar parts or parts having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0052] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, it can be a mechanical connection or an electrical connection, it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the description of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0054] At present, with the rapid development of the construction industry, new projects have been rapidly reduced, while there are more and more urban renewal projects, and there are many construction problems for a large number of old buildings that need to be demolished, rebuilt, and expanded in the renewal projects. Unlike new buildings, the above-mentioned demolition projects need to be constructed in the encirclement of various other buildings. Not only is the size of the construction site limited, but the surrounding environment is extremely sensitive to dust, noise and other pollution generated during the construction process. At the same time, the operating status around the operation will also be affected by it. Therefore, the use of conventional demolition methods to demolish such old buildings is subject to great operational restrictions. In the prior art, general demolition construction usually uses large-scale lifting machinery and other hoisting equipment, and cooperates with corresponding cutting and crushing technical means to dismantle the building structure at the original site, and hoist it to the ground in blocks for subsequent processing. However, such means not only cannot meet the requirements of the demolition construction space of old buildings in a small space in urban renewal projects, but also have adverse effects on the surrounding areas. Therefore, how to ensure that the demolition of old buildings with limited construction space has a reduced impact on the environment and surrounding operations, and the demolition efficiency is high and the operation is simple is a problem that people in this field need to solve.

[0055] The technical solution of this embodiment is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0056] like Figure 1-Figure 23 As shown, this embodiment provides a method for dismantling an old structure in a narrow space, comprising the following steps:

[0057] S1. After adding a temporary isolation platform 10 between the structure to be demolished 100 and the column 200, the connection between the two is removed;

[0058] S2, installing the jacking assembly 20, and after the jacking operation is performed on the structure to be demolished 100 by the jacking assembly 20, installing the transverse movement assembly;

[0059] S3, moving the structure to be demolished 100 to the working area 300 by means of a transverse movement assembly to perform fixed-point demolition of a part of the structure;

[0060] S4. Repeat step S3 until all structures 100 to be dismantled are dismantled.

[0061] Specifically, in this embodiment, the provision of a temporary isolation platform 10 can ensure the normal operation of functional areas such as commercial entities and public services in the original building, and will not affect traffic, etc., and the method of cumulative jacking and sliding and local repeated demolition in this embodiment can control the demolition construction area to a smaller range, thereby making full use of the narrow space resources in the central urban area and reducing the impact on surrounding buildings. In addition, the use of the transverse movement component for transverse movement and fixed-point demolition has the advantages of small footprint, low noise and pollution during use, low construction cost and high degree of automation, and can achieve continuous, rapid and safe demolition effects.

[0062] The specific contents of the method for dismantling an old structure in a narrow space in this embodiment are described below.

[0063] like Figure 1-Figure 8 As shown, specifically, step S2 includes:

[0064] S2.1, installing the lifting assembly 20 on the side of the top of the column 200;

[0065] S2.2, installing transverse limit stops 30 at both ends of the structure 100 to be demolished;

[0066] S2.3, starting the jacking assembly 20, so that the jacking assembly 20 performs a jacking operation on the structure to be demolished 100;

[0067] S2.4. Install a transverse movement assembly above the temporary isolation platform 10.

[0068] Optionally, in this embodiment, the structure to be demolished 100 is located at the top, supported by a plurality of columns 200 below, and the operation area 300 is located on one side of the structure to be demolished 100, and the operation area 300 is supported by a side support 400 below, so that the operator can demolish the structure to be demolished 100 in the operation area 300. Optionally, in this embodiment, after adding a temporary isolation platform 10 between the structure to be demolished 100 and the columns 200, the connection between the two is released, which can not only ensure the stable support of the structure to be demolished 100, but also avoid the impact on the buildings around the columns 200 during the subsequent demolition process, thereby achieving local efficient demolition and facilitating operations in the narrow space of the central urban area. Furthermore, in this embodiment, a lifting assembly 20 is installed on the side surface of the top of the column 200, so that the structure 100 to be demolished above can be lifted and lowered, which is convenient for the subsequent disassembly and assembly of the transverse movement assembly. The structure 100 to be demolished can be moved to the working area 300 above the temporary isolation platform 10 through the transverse movement assembly to achieve fixed-point demolition and achieve the effect of partial demolition. Specifically, in this embodiment, the unit-type partial structure of the structure 100 to be demolished can be demolished in the working area 300, so that the structure 100 to be demolished can be demolished in sections in a small space, ensuring that the structure 100 to be demolished is demolished in a stable and silent manner without affecting the buildings below. At the same time, under the action of the transverse movement assembly, the structure 100 to be demolished can be completely demolished by repeated sliding and unit-type demolition to complete the demolition work in a small space.

[0069] Combination Figure 3 and Figure 5 As shown, the jacking assembly 20 in this embodiment includes a jacking bracket 21 and a jacking jack 22, and there are several jacking brackets 21, wherein the jacking brackets 21 are arranged at the top of the column 200 and the bottom of the structure 100 to be demolished, and the jacking jack 22 is located between the jacking brackets 21 at the above two locations, so that the jacking jack 22 can lift or lower the structure 100 to be demolished under its telescopic effect, thereby facilitating the installation of the transverse movement assembly and will not affect the structure 100 to be demolished. The position and lifting height of the jacking assembly 20 in this embodiment can be determined according to needs, and will not be repeated here. Furthermore, transverse limits 30 are arranged at the transverse ends of both ends of the structure 100 to be demolished, so that the overall structure of the structure 100 to be demolished can be fixed by the transverse limits 30, so as to avoid changes in the transverse or longitudinal displacement of the structure 100 to be demolished during the subsequent transverse movement process, which affects the demolition effect.

[0070] Combination Figure 4 , Figure 6 and Figure 8As shown, in this embodiment, the transverse movement assembly includes a base beam 40, a track 50, a temporary support rod 60, a sliding structure 70, a jacking jack 80 and a connecting rod 90, wherein the base beam 40 can be mounted on the jacking bracket 21 to ensure the overall stability of the transverse movement assembly. Further, the track 50 is fixed on the base beam 40, and the sliding structure 70 is slidably arranged on the track 50 and arranged below the structure to be removed 100, so that the structure to be removed 100 can move on the track 50 under the action of the sliding structure 70, thereby achieving the effect of unit-type segmented fixed-point removal of the structure to be removed 100.

[0071] Optionally, in this embodiment, the temporary support rod 60 can be installed at the vacant part of the structure to be removed 100, so as to ensure the overall stability of the structure to be removed 100, and avoid the problem of disassembly due to unstable force during the sliding process. Further, the connecting rod 90 is arranged below the structure to be removed 100, and can provide a stable connection for each part of the structure to be removed 100. In combination with the use of the temporary support rod 60, the overall stability of the structure to be removed 100 can be ensured. Exemplarily, in this embodiment, the top push jack 80 is located on the track 50 and has a telescopic effect, so that the structure to be removed 100 can be pushed to move toward the working area 300. Optionally, in this embodiment, the top push jack 80 acts on the sliding structure 70 near the edge, so that the structure to be removed 100 can be moved as a whole to the working area 300 for unit-type fixed-point removal operations. In other embodiments, the position and the point of action of the top push jack 80 can be set as needed, which will not be repeated here.

[0072] Combination Figure 8-Figure 23 As shown, step S2.4 includes:

[0073] S2.4.1. Install the foundation beam 40 on the jacking bracket 21 above the temporary isolation platform 10, and install the track 50 on the foundation beam 40;

[0074] S2.4.2, fill the gap and bottom of the structure 100 to be demolished with the temporary support rod 60 and the connecting rod 90 respectively;

[0075] S4.2.3, installing the sliding structure 70 at the bottom of the structure to be removed 100 and placing it above the track 50;

[0076] S4.2.4. Retract the lifting assembly 20 to lower the structure 100 to be demolished, and then install the jacking jack 80 on the track 50.

[0077] Step S3 includes:

[0078] S3.1, driving the jacking jack 80 so that the jacking jack 80 pushes the structure to be demolished 100 toward the working area 300;

[0079] S3.2, when the first part of the structure to be demolished 100 enters the working area 300, it stops moving, and the operator performs fixed-point demolition of the first part of the structure to be demolished 100 in the working area 300;

[0080] S3.3, driving the jacking jack 80 so that the jacking jack 80 pushes the remaining structure 100 to be demolished toward the working area 300;

[0081] S3.4. When the next part of the structure 100 to be demolished enters the working area 300, it stops moving, and the operator performs fixed-point demolition of the next part of the structure 100 to be demolished in the working area 300.

[0082] For example, in this embodiment, when the jacking assembly 20 is jacked, the sliding structure 70 will not contact the track 50, so as to ensure the stable installation of the sliding structure 70; when the jacking assembly 20 is retracted, the sliding structure 70 can contact the track 50, so as to ensure the stable sliding of the sliding structure 70 on the track 50. For example, the sliding structure 70 is set as a friction-reducing sliding wheel, and can also be set as other structures in other embodiments. Further, in this embodiment, the length of the base beam 40 and the track 50 along the sliding direction is greater than the length of the temporary isolation platform 10, and the base beam 40 and the track 50 are extended into the working area 300, so as to ensure that the structure 100 to be demolished can stably slide into the working area 300 for demolition. For example, in this embodiment, the jacking jack 22 and the push jack 80 are operated by a hydraulic control system, so that not only can the automated operation be realized, but also the effects of low noise, no pollution, and low construction cost can be achieved.

[0083] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A method for dismantling old structures in a narrow space, characterized in that: The following steps are involved: S1. After adding a temporary isolation platform (10) between the structure to be demolished (100) and the column (200), the connection between the two is removed; S2, installing a jacking assembly (20), and after the structure to be demolished (100) is jacked up by the jacking assembly (20), installing a transverse movement assembly; S3, moving the structure to be dismantled (100) to the working area (300) by means of a transverse movement assembly to carry out fixed-point dismantling of a part of the structure; S4. Repeat step S3 until all the structures to be dismantled (100) are dismantled.

2. The method for dismantling old structures in a narrow space according to claim 1, characterized in that: The step S2 comprises: S2.

1. Install a lifting assembly (20) on the side surface of the top of the column (200); S2.2, installing transverse limit stops (30) at both ends of the structure to be dismantled (100); S2.3, starting the lifting assembly (20), so that the lifting assembly (20) performs a lifting operation on the structure to be demolished (100); S2.

4. Install a transverse movement assembly above the temporary isolation platform (10).

3. The method for dismantling old structures in a narrow space according to claim 2, characterized in that: The lifting assembly (20) comprises a lifting bracket (21) and a lifting jack (22), wherein the lifting bracket (21) is respectively arranged at the top of the column (200) and the bottom of the structure to be demolished (100), and the lifting jack (22) is located between the lifting bracket (21) on the top of the column (200) and the bottom of the structure to be demolished (100), and the lifting jack (22) can be extended and retracted to lift or lower the structure to be demolished (100).

4. The method for dismantling old structures in a narrow space according to claim 2, characterized in that: The transverse limiter (30) is capable of fixing the transverse end of the structure (100) to be removed.

5. The method for dismantling old structures in a narrow space according to claim 3, characterized in that: The transverse movement assembly includes a base beam (40), a track (50) and a sliding structure (70); the base beam (40) can be erected on the jacking bracket (21); the track (50) is fixed on the base beam (40); the sliding structure (70) is slidably arranged on the track (50) and is arranged below the structure to be demolished (100); the structure to be demolished (100) can move on the track (50) under the action of the sliding structure (70).

6. The method for dismantling old structures in a narrow space according to claim 5, characterized in that: The transverse movement assembly also includes a temporary support rod (60) and a connecting rod (90). The temporary support rod (60) can be installed in a vacant position of the structure to be demolished (100) for support, and the connecting rod (90) is arranged below the structure to be demolished (100) and can provide connection for various parts of the structure to be demolished (100).

7. The method for dismantling old structures in a narrow space according to claim 5, characterized in that: The transverse movement assembly is also provided with a push jack (80), which is located on the track (50) and can be extended and retracted to push the structure to be demolished (100) toward the working area (300).

8. The method for dismantling old structures in a narrow space according to claim 5, characterized in that: When the lifting assembly (20) is lifted, the sliding structure (70) will not contact the track (50); when the lifting assembly (20) is retracted, the sliding structure (70) can contact the track (50).

9. The method for dismantling old structures in a narrow space according to claim 5, characterized in that: The lengths of the foundation beam (40) and the track (50) along the sliding direction are both greater than the length of the temporary isolation platform (10), and the foundation beam (40) and the track (50) both extend into the working area (300).

10. The method for dismantling old structures in a narrow space according to claim 1, characterized in that: The working area (300) is located on one side of the structure (100) to be demolished, and the working area (300) is supported below by a side support (400).

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