Method for demolishing old structure in narrow space

Abstract

The application belongs to the technical field of building engineering, and discloses a method for demolishing old structures in narrow spaces, which comprises the following steps: S1, after a temporary isolation platform is added between the structure to be demolished and the stand column, the connection between the two is removed; S2, a jacking assembly is installed, the structure to be demolished is jacked through the jacking assembly, and then a horizontal moving assembly is installed; S3, the structure to be demolished is moved to the working area through the horizontal moving assembly to perform point removal of part of the structure; and S4, step S3 is repeated until the structure to be demolished is completely removed. The application can reduce the influence on the environment and the surrounding operation during the demolition of the old building with limited construction space, and has high demolition efficiency and simple operation.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, and in particular to a method for demolishing old structures in confined spaces. Background Technology

[0002] With the rapid development of the construction industry, new construction projects have decreased significantly, while urban renewal projects are increasing, often involving the demolition, reconstruction, or expansion of numerous old buildings. Unlike new construction, demolition work often requires construction within the confines of other buildings, limiting site size and making the surrounding environment highly sensitive to dust, noise, and other pollution. This also impacts surrounding businesses, severely restricting the use of conventional demolition methods. Current demolition techniques typically employ large cranes and other hoisting equipment, along with cutting and crushing techniques, to dismantle the building structure on-site, assembling sections and hoisting them to the ground for further processing. However, these methods fail to meet the space requirements of urban renewal projects with limited space and negatively impact the surrounding environment. Therefore, minimizing the environmental and operational impacts of demolishing old buildings in confined spaces while maintaining high efficiency and ease of operation is a key challenge for those working in this field. Summary of the Invention

[0003] The purpose of this invention is to provide a method for demolishing old structures in confined spaces, so as to reduce the impact on the environment and surrounding operations when demolishing old buildings with limited construction space, while also achieving high demolition efficiency and simple operation.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] Methods for demolishing old structures in confined spaces, including 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 then severed;

[0007] S2. Install the lifting assembly, and after lifting the structure to be demolished using the lifting assembly, install the lateral movement assembly;

[0008] S3. The structure to be demolished is moved to the work area by the horizontal moving component for partial demolition of the structure at a fixed point.

[0009] S4. Repeat step S3 until all the structures to be demolished have been demolished.

[0010] Optionally, step S2 includes:

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

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

[0013] S2.3 Activate the lifting assembly to lift the structure to be demolished;

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

[0015] Optionally, the lifting assembly includes a lifting bracket and a lifting jack. The lifting bracket is respectively disposed at the top of the column and the bottom of the structure to be demolished. The lifting jack is located between the lifting bracket on the top of the column and the bottom of the structure to be demolished, and the lifting jack is retractable to lift or lower the structure to be demolished.

[0016] Alternatively, the lateral limiter can be used to secure the lateral end of the structure to be demolished.

[0017] Optionally, the lateral movement assembly includes a base beam, a track, and a sliding structure. The base beam can be erected on the lifting bracket, the track is fixed to the base beam, and the sliding structure is slidably disposed on the track and located below the structure to be demolished. The structure to be demolished can move on the track under the action of the sliding structure.

[0018] Optionally, the lateral movement assembly also includes a temporary support rod and a connecting rod. The temporary support rod can be installed at the gap in the structure to be demolished for support, and the connecting rod is located below the structure to be demolished and can provide connection between the various parts of the structure to be demolished.

[0019] Optionally, the traverse assembly is further provided with a jacking jack located on the track and capable of extension and retraction to push the structure to be demolished toward the work area.

[0020] Optionally, when the lifting assembly is raised, the sliding structure does not contact the track; when the lifting assembly is retracted, the sliding structure can contact the track.

[0021] Alternatively, 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 both the foundation beam and the track extend into the work area.

[0022] Alternatively, the work area may be located on one side of the structure to be demolished, and the work area may be supported by side supports.

[0023] The beneficial effects of this invention are:

[0024] The temporary isolation platform in this invention ensures the normal operation of commercial and public service areas within the original building without affecting traffic. Furthermore, the cumulative jacking and sliding and repeated local demolition methods in this invention control the demolition work area within a small range, thus making full use of the limited space resources in the central urban area and reducing the impact on surrounding buildings. The lateral movement components used for lateral movement and fixed-point demolition have the advantages of small footprint, low noise, no pollution, low construction cost, and high degree of automation, achieving continuous, fast, and safe demolition results. Attached Figure Description

[0025] Figure 1 This is a front view schematic diagram of the structure to be demolished in the method for demolishing old structures in a confined space as described in the embodiments of the present invention;

[0026] Figure 2 This is a side view of the structure to be demolished in the method for demolishing an old structure in a confined space according to an embodiment of the present invention.

[0027] Figure 3 This is a front view schematic diagram of the method for demolishing old structures in a confined space according to an embodiment of the present invention after the installation of the lifting component;

[0028] Figure 4 This is a side view of the method for demolishing old structures in a confined space according to an embodiment of the present invention, after the installation of the lifting assembly and part of the lateral movement assembly;

[0029] Figure 5 This is a front view schematic diagram of step S2 in the method for demolishing old structures in a confined space according to an embodiment of the present invention;

[0030] Figure 6 This is a side view of step S2 in the method for demolishing old structures in a confined space according to an embodiment of the present invention;

[0031] Figure 7 This is another front view schematic diagram of the structure to be demolished in the method for demolishing old structures in a confined space as described in the embodiments of the present invention;

[0032] Figure 8 This is another frontal view of step S2 in the method for demolishing old structures in a confined space according to an embodiment of the present invention;

[0033] Figure 9 This is a top view schematic diagram of step S2 in the method for demolishing old structures in a confined space according to an embodiment of the present invention;

[0034] Figure 10This is a front view schematic diagram of step S3 in the method for demolishing old structures in a confined space according to an embodiment of the present invention;

[0035] Figure 11 This is a top view schematic diagram of step S3 in the method for demolishing old structures in a confined space according to an embodiment of the present invention;

[0036] Figure 12 This is a frontal view of step S4 in the method for demolishing old structures in a confined space according to an embodiment of the present invention;

[0037] Figure 13 This is a top view schematic diagram of step S4 in the method for demolishing old structures in a confined space according to an embodiment of the present invention;

[0038] Figure 14 This is a front view schematic diagram of step S4, which involves the removal of a portion of an old structure in a confined space, as described in the embodiment of the present invention.

[0039] Figure 15 This is a top view of step S4, which involves removing a portion of an old structure in a confined space, as described in the embodiment of the present invention.

[0040] Figure 16 This is a frontal view of step S4, in the method for demolishing an old structure in a confined space according to an embodiment of the present invention, where a portion of the old structure is demolished and then step S3 is repeated;

[0041] Figure 17 This is a top view of the method for demolishing old structures in a confined space according to an embodiment of the present invention, in which step S4 is to demolish a portion and then repeat step S3.

[0042] Figure 18 This is a frontal view of step S4, which involves dismantling another part of an old structure in a confined space, as described in an embodiment of the present invention.

[0043] Figure 19 This is a top view schematic diagram of step S4, which involves dismantling another part of an old structure in a confined space, according to an embodiment of the present invention.

[0044] Figure 20 This is a front view schematic diagram of the final part of the demolition in step S4 of the method for demolishing old structures in a confined space according to an embodiment of the present invention.

[0045] Figure 21 This is a top view of step S4, the final part of the demolition, in the method for demolishing old structures in a confined space as described in this embodiment of the invention.

[0046] Figure 22 This is a front view of the complete demolition in step S4 of the method for demolishing old structures in a confined space according to an embodiment of the present invention;

[0047] Figure 23 This is a top view of step S4, which shows the complete demolition of an old structure in a confined space, as described in the embodiment of the present invention.

[0048] In the picture:

[0049] 100 - Structure to be demolished; 200 - Column; 300 - Work area; 400 - Side support;

[0050] 10-Temporary isolation platform; 20-Lifting component; 21-Lifting bracket; 22-Lifting jack; 30-Lateral limit; 40-Foundation beam; 50-Railway; 60-Temporary support rod; 70-Sliding structure; 80-Push jack; 90-Connecting rod. Detailed Implementation

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

[0052] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0053] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0054] With the rapid development of the construction industry, new construction projects have decreased significantly, while urban renewal projects are increasing, often involving the demolition, reconstruction, or expansion of numerous old buildings. Unlike new construction, demolition work often requires construction within the confines of other buildings, limiting site size and making the surrounding environment highly sensitive to dust, noise, and other pollution. This also impacts surrounding businesses, severely restricting the use of conventional demolition methods. Current demolition techniques typically employ large cranes and other hoisting equipment, along with cutting and crushing techniques, to dismantle the building structure on-site, assembling sections and hoisting them to the ground for further processing. However, these methods fail to meet the space requirements of urban renewal projects with limited space and negatively impact the surrounding environment. Therefore, minimizing the environmental and operational impacts of demolishing old buildings in confined spaces while maintaining high efficiency and ease of operation is a key challenge for those working in this field.

[0055] The technical solution of this embodiment will be further described below with reference to the accompanying drawings and specific implementation methods.

[0056] like Figures 1-23 As shown, this embodiment provides a method for demolishing old structures in confined spaces, including the following steps:

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

[0058] S2. Install the lifting assembly 20, and after lifting the structure 100 to be demolished using the lifting assembly 20, install the transverse moving assembly;

[0059] S3. The structure to be demolished 100 is moved to the work area 300 by the horizontal moving component to carry out the partial demolition of the structure.

[0060] S4. Repeat step S3 until all of the structure to be demolished 100 has been demolished.

[0061] Specifically, in this embodiment, the temporary isolation platform 10 ensures the normal operation of commercial and public service areas within the original building without affecting traffic. Furthermore, the cumulative jacking and sliding and repeated local demolition methods in this embodiment control the demolition work area to be within a small range, thus making full use of the limited space resources in the central urban area and reducing the impact on surrounding buildings. Moreover, the use of the lateral movement components for lateral movement and fixed-point demolition has the advantages of small footprint, low noise, no pollution, low construction cost, and high degree of automation, achieving continuous, fast, and safe demolition results.

[0062] The following describes the specific details of the method for demolishing old structures in a confined space in this embodiment.

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

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

[0065] S2.2 Install lateral limiters 30 at both ends of the structure 100 to be demolished;

[0066] S2.3 Activate the lifting assembly 20 to lift the structure 100 to be demolished;

[0067] S2.4 Install the 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 and supported by several columns 200 below. The working area 300 is located on one side of the structure to be demolished 100, and the working area 300 is supported by side supports 400 below. Thus, workers can demolish the structure to be demolished 100 in the working 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 then severed. This not only ensures the stable support of the structure to be demolished 100, but also avoids impacting surrounding buildings such as the columns 200 during the subsequent demolition process. This achieves efficient local demolition and facilitates operations in the confined spaces of the central urban area. Furthermore, in this embodiment, a lifting component 20 is installed on the side of the top of the column 200. This allows for the lifting and lowering of the structure 100 to be demolished, facilitating the subsequent assembly and disassembly of the horizontal moving component. The horizontal moving component then moves the structure 100 above the temporary isolation platform 10 to the work area 300 for targeted demolition, achieving a partial demolition effect. Specifically, in this embodiment, the structure 100 to be demolished can be dismantled in units at the work area 300. This allows for segmented demolition of the structure 100 in a confined space, ensuring that the demolition is carried out stably, quietly, and without affecting the buildings below. Simultaneously, through repeated sliding and unit-by-unit demolition using the horizontal moving component, the entire structure 100 can be demolished, completing the demolition work in the confined space.

[0069] Combination Figure 3 and Figure 5 As shown, in this embodiment, the lifting assembly 20 includes lifting brackets 21 and lifting jacks 22. Several lifting brackets 21 are provided, with some at the top of the column 200 and others at the bottom of the structure 100 to be demolished. The lifting jacks 22 are located between these two lifting brackets 21. Thus, the lifting jacks 22, through their telescopic effect, can lift or lower the structure 100 to be demolished, facilitating the installation of the lateral movement assembly without affecting the structure 100. The position and lifting height of the lifting assembly 20 in this embodiment can be customized as needed, and will not be elaborated here. Furthermore, lateral limiters 30 are provided at both ends of the structure 100 to be demolished. These lateral limiters 30 fix the overall structure of the structure 100 to be demolished, preventing changes in lateral or longitudinal displacement during subsequent lateral movement, which would affect the demolition effect.

[0070] Combination Figure 4 , Figure 6 and Figure 8As shown, in this embodiment, the lateral movement assembly includes a foundation beam 40, a track 50, a temporary support rod 60, a sliding structure 70, a jacking jack 80, and a connecting rod 90. The foundation beam 40 can be erected on the lifting bracket 21 to ensure the overall stability of the lateral movement assembly. Furthermore, the track 50 is fixed to the foundation beam 40, and the sliding structure 70 is slidably disposed on the track 50 and located below the structure 100 to be demolished. Thus, the structure 100 to be demolished can move on the track 50 under the action of the sliding structure 70, thereby achieving the effect of unit-based segmented fixed-point demolition of the structure 100 to be demolished.

[0071] Optionally, in this embodiment, the temporary support rod 60 can be installed at the gap in the structure 100 to be demolished, thereby ensuring the overall stability of the structure 100 to be demolished and avoiding problems such as disintegration due to unstable force during sliding. Further, the connecting rod 90 is located below the structure 100 to be demolished and can provide a stable connection to each part of the structure 100 to be demolished. Combined with the use of the temporary support rod 60, the overall stability of the structure 100 to be demolished can be guaranteed. Exemplarily, in this embodiment, the jacking jack 80 is located on the track 50 and has a telescopic effect, thereby enabling the structure 100 to be demolished to move towards the work area 300. Optionally, in this embodiment, the jacking jack 80 acts on the sliding structure 70 near the edge, thereby enabling the structure 100 to be demolished as a whole to be moved to the work area 300 for unit-based fixed-point demolition. In other embodiments, the position and point of action of the jacking jack 80 can be set as needed, and will not be elaborated here.

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

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

[0074] S2.4.2. Temporary support rods 60 and connecting rods 90 are respectively used to fill the gaps and bottom of the structure 100 to be demolished;

[0075] S2.4.3 Install the sliding structure 70 at the bottom of the structure 100 to be demolished, and position it above the track 50;

[0076] S2.4.4, retract the lifting assembly 20 to lower the structure 100 to be demolished, and then install the jacking 80 on the track 50.

[0077] Step S3 includes:

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

[0079] S3.2 When the first part of the structure to be demolished 100 enters the work area 300, it stops moving and the workers carry out fixed-point demolition of the first part of the structure to be demolished 100 in the work area 300.

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

[0081] S3.4 When the next part of the structure to be demolished 100 enters the work area 300, it stops moving. The workers in the work area 300 carry out fixed-point demolition of the next part of the structure to be demolished 100.

[0082] For example, in this embodiment, when the lifting assembly 20 is lifted, the sliding structure 70 will not contact the track 50, thereby ensuring the stable installation of the sliding structure 70; when the lifting assembly 20 is retracted, the sliding structure 70 can contact the track 50, thereby ensuring 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, but it can also be set as other structures in other embodiments. Further, in this embodiment, 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 both the foundation beam 40 and the track 50 extend into the working area 300, thereby ensuring that the structure 100 to be demolished can be stably slid into the working area 300 for demolition work. For example, in this embodiment, both the lifting jack 22 and the pushing jack 80 are operated through a hydraulic control system, which not only enables automated operation, but also achieves the effects of low noise, no pollution, and low construction cost.

[0083] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A method for demolishing old structures in confined spaces, characterized in that, Includes the following steps: 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 then severed. S2. Install the lifting assembly (20), and after lifting the structure (100) to be demolished by the lifting assembly (20), install the transverse moving assembly; S3. The structure to be demolished (100) is moved to the work area (300) by the transverse moving component for partial demolition; S4. Repeat step S3 until all the structures to be demolished (100) are demolished; Step S2 includes: S2.1 Install the lifting assembly (20) on the side of the top of the column (200); S2.2 Install lateral limiters (30) at both ends of the structure (100) to be demolished. S2.3 Activate the lifting assembly (20) to lift the structure (100) to be demolished; S2.4 Install the lateral movement assembly above the temporary isolation platform (10); Step S3 includes: S3.1 Drive the jacking jack (80) so that the jacking jack (80) pushes the structure to be demolished (100) toward the work area (300); S3.2 When the first part of the structure to be demolished (100) enters the work area (300) and stops moving, the workers shall carry out fixed-point demolition of the first part of the structure to be demolished (100) in the work area (300); S3.3 Drive the jacking jack (80) so that the jacking jack (80) pushes the remaining structure to be demolished (100) toward the work area (300); S3.4 When the next part of the structure to be demolished (100) enters the work area (300) and stops moving, the workers in the work area (300) will carry out fixed-point demolition of the next part of the structure to be demolished (100).

2. The method for demolishing old structures in a confined space according to claim 1, characterized in that, The lifting assembly (20) includes a lifting bracket (21) and a lifting jack (22). The lifting bracket (21) is respectively located at the top of the column (200) and the bottom of the structure to be demolished (100). 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 extend and retract to lift or lower the structure to be demolished (100).

3. The method for demolishing old structures in a confined space according to claim 1, characterized in that, The lateral limit (30) can fix the lateral end of the structure (100) to be demolished.

4. The method for demolishing old structures in a confined space according to claim 2, characterized in that, The transverse assembly includes a base beam (40), a track (50), and a sliding structure (70). The base beam (40) can be erected on the lifting bracket (21). The track (50) is fixed on the base beam (40). The sliding structure (70) is slidably disposed on the track (50) and disposed 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).

5. The method for demolishing old structures in a confined space according to claim 4, characterized in that, The lateral movement assembly also includes a temporary support rod (60) and a connecting rod (90). The temporary support rod (60) can be installed in the gap of the structure to be demolished (100) for support, and the connecting rod (90) is located below the structure to be demolished (100) and can provide connection for each part of the structure to be demolished (100).

6. The method for demolishing old structures in a confined space according to claim 4, characterized in that, The lateral movement assembly is also provided with a jack (80), which is located on the track (50) and is telescopic to push the structure to be demolished (100) toward the work area (300).

7. The method for demolishing old structures in a confined space according to claim 4, 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).

8. The method for demolishing old structures in a confined space according to claim 4, 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 work area (300).

9. The method for demolishing old structures in a confined space according to claim 1, characterized in that, The work area (300) is located on one side of the structure to be demolished (100), and the work area (300) is supported by a side support (400).

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