Demolition monitoring system based on building structure change data

Abstract

The invention relates to the technical field of building demolition, in particular to a demolition monitoring system based on building structure change data, and the system comprises a data collection module which comprises a laser ranging unit, a damage obtaining unit, a strain obtaining unit and a noise monitoring unit, and the laser ranging unit is used for obtaining the deformation quantity of a demolition point; the damage acquisition unit is used for acquiring the crack length of the column and the wall body; the strain acquisition unit is used for acquiring the dependent variables of the beam and the top surface; the noise monitoring unit is used for acquiring the change of noise; the data processing module is connected with the data acquisition module and is used for judging whether dismantling meets a preset standard or not; and the display module is connected with the data processing module and is used for displaying a construction adjustment scheme and early warning, so that the precision and the reliability of monitoring data are improved, and the safety and the efficiency of construction are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of building demolition, and particularly to a demolition monitoring system based on building structure change data. Background Art

[0002] With the acceleration of the urbanization process, building demolition has become an important part of urban renewal and development. However, the structural changes of buildings during the demolition process are complex and difficult to predict. Carelessness may easily lead to serious safety accidents such as collapses. Traditional demolition monitoring methods often rely on manual inspections and empirical judgments, with disadvantages such as poor real-time performance, low accuracy, and susceptibility to human factors.

[0003] Chinese Patent Publication No.: CN115162772B discloses a high-rise building demolition process, belonging to the technical field of building construction, including the following steps: S1. Construction preparation; S2. Construction structure erection: internal support structure erection, the internal support structure includes a top truss and multiple support columns, the support columns are distributed on the outer periphery of the high-rise building to be demolished, the top of the support columns supports and connects the top truss, and each support column can move up or down; external wall climbing frame structure erection, the external wall climbing frame structure is slidably connected to the support column through a crawling wheel group, and a corridor bridge is also connected between two crawling wheel groups; S3. Demolition: using an ultra-high pressure water gun to cut and crush the wall, and demolishing the high-rise building floor by floor; S4. Material recovery and treatment. It can be seen that the above technical solution has low construction safety due to the lack of real-time monitoring and corresponding warning measures for the demolition process. Summary of the Invention

[0004] Therefore, the present invention provides a demolition monitoring system based on building structure change data to overcome the problem of low construction safety in the prior art due to the lack of real-time monitoring and corresponding warning measures for the demolition process.

[0005] To achieve the above object, the present invention provides a demolition monitoring system based on building structure change data, including:

[0006] A data acquisition module, including a laser ranging unit, a damage acquisition unit, a strain acquisition unit, and a noise monitoring unit, wherein,

[0007] The laser ranging unit is arranged in a matrix on the ground of the monitoring layer to obtain the longitudinal deformation information of the demolition points on the demolition surface, wherein the monitoring layer is the lower floor of the building demolition layer;

[0008] The damage acquisition unit is used to obtain the crack lengths of the columns and walls of the monitoring layer;

[0009] The strain acquisition unit is arranged in a matrix on the top surface of the monitoring layer to acquire the longitudinal strain information of the beam and the top surface;

[0010] The noise monitoring unit is arranged on the columns and beams of the monitoring layer to acquire the noise information during building demolition;

[0011] The data processing module is connected to the data acquisition module. When it is determined that the demolition does not meet the preset standard according to the longitudinal deformation amount of the demolition point obtained by the laser ranging unit, it re-determines whether the demolition meets the preset standard according to the average deformation amount of the characteristic points, or reduces the clamping area of the hydraulic shear during a single demolition process;

[0012] The display module is connected to the data processing module to display the determination result of the data processing module.

[0013] Further, the data processing module determines whether the demolition meets the preset standard according to the longitudinal deformation amount of the demolition point obtained by the laser ranging unit, where

[0014] If the longitudinal deformation amount of the demolition point is less than the first preset longitudinal deformation amount, the data processing module determines that the demolition meets the preset standard and continues the demolition according to the current construction method;

[0015] If the longitudinal deformation amount of the demolition point is greater than or equal to the first preset longitudinal deformation amount and less than the second preset longitudinal deformation amount, the data processing module determines that the demolition does not meet the preset standard and re-determines whether the demolition meets the preset standard according to the average deformation amount of the characteristic points;

[0016] If the longitudinal deformation amount of the demolition point is greater than or equal to the second preset longitudinal deformation amount, the data processing module determines that the demolition does not meet the preset standard and reduces the clamping area of the hydraulic shear during a single demolition process according to the difference between the longitudinal deformation amount of the demolition point and the second preset longitudinal deformation amount.

[0017] Further, the data processing module is provided with several area adjustment methods for reducing the clamping area, and each area adjustment method has a different reduction amplitude for the clamping area.

[0018] Further, the data processing module re-determines whether the demolition meets the preset standard according to the average deformation amount of the characteristic points, where

[0019] If the average deformation amount of the characteristic points is less than the preset deformation characteristic value, the data processing module re-determines that the demolition meets the preset standard and continues the demolition according to the current construction method;

[0020] If the mean value of the deformation amount of the feature point is greater than or equal to the preset deformation amount feature value, the data processing module re-determines that the demolition does not meet the preset standard, and adds temporary support within the first preset radius of the demolition point in the monitoring layer.

[0021] Further, the mean value of the deformation amount of the feature point is the average value of the longitudinal deformation amounts of several points on the second preset radius of the demolition point.

[0022] Further, the data processing module issues a warning to stop the demolition in response to the noise anomaly feature value being greater than the preset noise anomaly threshold.

[0023] Further, the noise anomaly feature value is jointly determined by the noise loudness and the noise duration obtained by the noise monitoring unit.

[0024] Further, the data processing module synchronously corrects the first preset deformation amount and the second preset deformation amount in response to the corrected evaluation value being greater than the preset correction threshold.

[0025] Further, the corrected evaluation value is jointly determined according to the damage feature coefficient and the strain feature coefficient, where

[0026] the damage feature coefficient is determined according to the crack lengths of the columns and walls obtained by the damage acquisition unit,

[0027] the strain feature coefficient is determined according to the longitudinal strain amounts of the beams and the top surface obtained by the strain acquisition unit.

[0028] Further, the correction amplitudes of the first preset deformation amount and the second preset deformation amount are positively correlated with the correction difference, where the correction difference is the difference between the corrected evaluation value and the preset correction threshold.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention includes a data acquisition module, a data processing module, and a display module. Among them, the data acquisition module includes a laser ranging unit, a damage acquisition unit, a strain acquisition unit, and a noise monitoring unit. This all-round and high-precision data acquisition method significantly improves the accuracy and reliability of the monitoring data. The data processing module is connected to the data acquisition module, can immediately analyze and process the collected data, and display the construction adjustment plan and issue a warning through the display module, significantly improving the safety and efficiency of the construction.

[0030] The data processing module determines whether the demolition meets the preset standard according to the longitudinal deformation amount of the demolition point obtained by the laser ranging unit. If it does not meet the preset standard, it re-determines whether the demolition meets the preset standard according to the average deformation amount of the characteristic points, or reduces the clamping area of the hydraulic shear during a single demolition process according to the difference between the longitudinal deformation amount of the demolition point and the second preset longitudinal deformation amount, and introduces the average deformation amount of the characteristic points as the basis for the re-determination, which increases the reliability and comprehensiveness of the evaluation.

[0031] The data processing module sets different reduction adjustment coefficients for the clamping area of the hydraulic shear during a single demolition process according to the difference between the longitudinal deformation amount of the demolition point and the second preset longitudinal deformation amount. This strategy can flexibly adjust the construction parameters according to the actual demolition situation, optimize the demolition effect, and reduce unnecessary structural damage.

[0032] The data processing module re-determines whether the demolition meets the preset standard according to the average deformation amount of the characteristic points. If it does not meet the preset standard, temporary support is added within the first preset radius of the demolition point in the monitoring layer. This measure can effectively protect the surrounding structure and prevent the building from collapsing due to the demolition construction.

[0033] The data processing module issues a warning to stop the demolition in response to the noise abnormal eigenvalue being greater than the preset noise abnormal threshold, which helps to timely discover and handle potential safety hazards and ensure the safety of the construction.

[0034] The data processing module synchronously corrects the first preset deformation amount and the second preset deformation amount in response to the corrected evaluation value being greater than the preset correction threshold, and the corrected evaluation value is jointly determined according to the damage characteristic coefficient and the strain characteristic coefficient. This self-adaptive optimization mechanism can automatically adjust the preset standard according to the feedback during the actual demolition process, improving the adaptability and efficiency of the construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the module connection of the demolition monitoring system based on the building structure change data according to the embodiment of the present invention;

[0036] Figure 2 It is a flowchart for the data processing module to determine whether the demolition meets the preset standard according to the longitudinal deformation amount of the demolition point obtained by the laser ranging unit;

[0037] Figure 3 It is a flowchart for reducing the clamping area of the hydraulic shear during a single demolition process according to the deformation amount difference;

[0038] Figure 4This is a flowchart for the second determination of whether the demolition meets the preset standard based on the mean quadratic value of the deformation amount at the characteristic points in the embodiments of the present invention. Detailed implementation manners

[0039] In order to make the objectives and advantages of the present invention clearer and more understandable, the present invention will be further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] Those skilled in the art can understand that the determination method of the present invention for the above single parameter can be to select the value with the highest proportion according to the data distribution as the preset standard parameter, use weighted summation to take the obtained value as the preset standard parameter, substitute each historical data into a specific formula and take the value obtained by using this formula as the preset standard parameter, or other selection methods, as long as it satisfies that the system of the present invention can clearly define different specific situations in the single determination process through the obtained values.

[0041] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present invention and do not limit the protection scope of the present invention.

[0042] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 as shown, which are respectively the schematic diagram of module connections of the demolition monitoring system based on building structure change data in the embodiments of the present invention; the flowchart for determining whether the demolition meets the preset standard according to the longitudinal deformation amount of the demolition points obtained by the laser ranging unit in the embodiments of the present invention; the flowchart for reducing the clamping area of the hydraulic shear during a single demolition process according to the deformation amount difference; and the flowchart for the second determination of whether the demolition meets the preset standard according to the mean value of the deformation amounts at the characteristic points in the embodiments of the present invention.

[0043] An embodiment of the present invention provides a demolition monitoring system based on building structure change data, including:

[0044] A data acquisition module, including a laser ranging unit, a damage acquisition unit, a strain acquisition unit, and a noise monitoring unit, wherein,

[0045] The laser ranging unit is arranged in a matrix on the ground of the monitoring layer to obtain the longitudinal deformation information of the demolition points on the demolition surface, wherein the monitoring layer is the lower floor of the building demolition layer;

[0046] The damage acquisition unit is used to obtain the crack lengths of the columns and walls of the monitoring layer;

[0047] The strain acquisition unit is arranged in a matrix on the top surface of the monitoring layer to acquire the longitudinal strain information of the beam and the top surface.

[0048] The noise monitoring unit is arranged on the columns and beams of the monitoring layer to acquire the noise information during building demolition.

[0049] The data processing module is connected to the data acquisition module. When it is determined that the demolition does not meet the preset standard based on the longitudinal deformation amount of the demolition point obtained by the laser ranging unit, it re-determines whether the demolition meets the preset standard according to the average deformation amount of the characteristic points, or reduces the clamping area of the hydraulic shear during a single demolition process.

[0050] The display module is connected to the data processing module to display the determination result of the data processing module.

[0051] Specifically, the laser ranging unit is, for example, a laser rangefinder, and is not specifically limited, and is used to acquire the deformation amount of the demolition point.

[0052] Specifically, the damage acquisition unit is, for example, an ultrasonic flaw detector, and is not specifically limited, and is used to acquire the crack lengths of the columns and walls of the monitoring layer.

[0053] Specifically, the strain acquisition unit is, for example, a resistance strain gauge, and is not specifically limited, and is used to acquire the longitudinal strain information of the beam and the top surface.

[0054] Specifically, the noise monitoring unit is, for example, a noise monitor, and is not specifically limited, and is used to acquire the noise information during building demolition.

[0055] Specifically, the data processing module determines whether the demolition meets the preset standard according to the longitudinal deformation amount of the demolition point obtained by the laser ranging unit, where

[0056] If the longitudinal deformation amount of the demolition point is less than the first preset longitudinal deformation amount of 0.20 m, the data processing module determines that the demolition meets the preset standard and continues the demolition according to the current construction method;

[0057] If the longitudinal deformation amount of the demolition point is greater than or equal to the first preset longitudinal deformation amount and less than the second preset longitudinal deformation amount of 0.30 m, the data processing module determines that the demolition does not meet the preset standard and re-determines whether the demolition meets the preset standard according to the average deformation amount of the characteristic points;

[0058] If the longitudinal deformation amount of the demolition point is greater than or equal to the second preset longitudinal deformation amount, the data processing module determines that the demolition does not meet the preset standard and reduces the clamping area of the hydraulic shear during a single demolition process according to the difference between the longitudinal deformation amount of the demolition point and the second preset longitudinal deformation amount.

[0059] Specifically, the data processing module reduces the clamping area of the hydraulic shear during a single demolition process according to the difference between the longitudinal deformation amount of the demolition point and the second preset longitudinal deformation amount, where

[0060] if the deformation amount difference is less than the first preset deformation amount difference of 0.08 m, the first area adjustment coefficient of 0.95 is used to reduce the clamping area to the corresponding value;

[0061] if the deformation amount difference is greater than or equal to the first preset deformation amount difference and less than the second preset deformation amount difference of 0.13 m, the second area adjustment coefficient of 0.89 is used to reduce the clamping area to the corresponding value;

[0062] if the deformation amount difference is greater than or equal to the second preset deformation amount difference, the third area adjustment coefficient of 0.82 is used to reduce the clamping area to the corresponding value;

[0063] The deformation amount difference is the difference between the longitudinal deformation amount of the demolition point and the second preset longitudinal deformation amount.

[0064] Specifically, the data processing module secondarily determines whether the demolition meets the preset standard according to the average value of the deformation amounts of the feature points, where

[0065] if the average value of the deformation amounts of the feature points is less than the preset deformation amount feature value of 0.03 m, the data processing module secondarily determines that the demolition meets the preset standard and continues the demolition according to the current construction method;

[0066] if the average value of the deformation amounts of the feature points is greater than or equal to the preset deformation amount feature value, the data processing module secondarily determines that the demolition does not meet the preset standard, and temporary support is added within the first preset radius of 2.5 m of the demolition point on the monitoring layer.

[0067] Specifically, the average value of the deformation amounts of the feature points is the average value of the longitudinal deformation amounts of several points on the second preset radius of 0.80 m of the demolition point.

[0068] Specifically, the data processing module issues a warning to stop the demolition in response to the noise anomaly feature value being greater than the preset noise anomaly threshold of 0.87.

[0069] Specifically, the noise anomaly feature value is jointly determined by the noise loudness and the noise duration obtained by the noise monitoring unit.

[0070] Specifically, the noise anomaly feature value is calculated by the following formula

[0071]

[0072] In the formula, Q represents the noise anomaly eigenvalue, α represents the first evaluation coefficient, and α is set to 0.65. L represents the noise loudness, Ly represents the noise loudness threshold, and Ly is set to 100 dB. β represents the second evaluation coefficient, and β is set to 0.32. T represents the noise duration, and Ty represents the noise duration threshold, and Ty is set to 10 s.

[0073] Specifically, the data processing module synchronously corrects the first preset deformation amount and the second preset deformation amount in response to the corrected evaluation value being greater than the preset correction threshold of 0.82.

[0074] Specifically, the corrected evaluation value is jointly determined according to the damage feature coefficient and the strain feature coefficient, where

[0075] the damage feature coefficient is determined according to the crack lengths of the columns and walls obtained by the damage acquisition unit,

[0076] the strain feature coefficient is determined according to the longitudinal strain amounts of the beams and the top surfaces obtained by the strain acquisition unit. Specifically, the corrected evaluation value is calculated by the following formula

[0077] E = λD + μS

[0078] In the formula, E represents the corrected evaluation value, λ represents the third evaluation coefficient, and λ is set to 0.45. D represents the damage feature coefficient, μ represents the fourth evaluation coefficient, and μ is set to 0.52. S represents the strain feature coefficient;

[0079] where where where f1 represents the crack length of the column, f2 represents the crack length of the wall, fy represents the crack length threshold, and fy is set to 0.10 m. σ1 represents the longitudinal strain amount of the beam, σ2 represents the longitudinal strain amount of the top surface, and σy represents the strain amount threshold, and σy is set to 0.005.

[0080] Specifically, the data processing module synchronously corrects the first preset deformation amount and the second preset deformation amount according to the correction difference, where

[0081] if the correction difference is less than the first preset correction difference of 0.05, the first preset deformation amount and the second preset deformation amount are corrected to the corresponding values using the first correction coefficient of 0.991;

[0082] if the correction difference is greater than or equal to the first preset correction difference and less than the second preset correction difference of 0.12, the first preset deformation amount and the second preset deformation amount are corrected to the corresponding values using the second correction coefficient of 0.985;

[0083] If the corrected difference is greater than or equal to the second preset correction difference, the first preset deformation amount and the second preset deformation amount are corrected to corresponding values using the third correction coefficient 0.980;

[0084] The corrected difference is the difference between the corrected evaluation value and the preset correction threshold.

[0085] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0086] The above are only the preferred embodiments of the present invention and are not used to limit the present invention; for those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A demolition monitoring system based on building structure change data, characterized in that, Including: A data acquisition module, including a laser ranging unit, a damage acquisition unit, a strain acquisition unit, and a noise monitoring unit. Among them, The laser ranging unit is arranged in a matrix on the ground of the monitoring layer to obtain the longitudinal deformation information of the demolition points on the demolition surface. Among them, the monitoring layer is the lower floor of the building demolition layer; The damage acquisition unit is used to obtain the crack lengths of the columns and walls of the monitoring layer; The strain acquisition unit is arranged in a matrix on the top surface of the monitoring layer to obtain the longitudinal strain information of the beams and the top surface; The noise monitoring unit is arranged on the columns and beams of the monitoring layer to obtain the noise information during building demolition; A data processing module, which is connected to the data acquisition module, and is used to, when it is determined that the demolition does not meet the preset standard according to the longitudinal deformation amount of the demolition point obtained by the laser ranging unit, re-determine whether the demolition meets the preset standard according to the average value of the deformation amounts of the characteristic points, or reduce the clamping area of the hydraulic shear during a single demolition process; A display module, which is connected to the data processing module and displays the determination result of the data processing module.

2. The demolition monitoring system based on building structure change data according to claim 1, characterized in that The data processing module determines whether the demolition meets the preset standard according to the longitudinal deformation amount of the demolition point obtained by the laser ranging unit. Among them, If the longitudinal deformation amount of the demolition point is less than the first preset longitudinal deformation amount, the data processing module determines that the demolition meets the preset standard and continues the demolition according to the current construction method; If the longitudinal deformation amount of the demolition point is greater than or equal to the first preset longitudinal deformation amount and less than the second preset longitudinal deformation amount, the data processing module determines that the demolition does not meet the preset standard and re-determines whether the demolition meets the preset standard according to the average value of the deformation amounts of the characteristic points; If the longitudinal deformation amount of the demolition point is greater than or equal to the second preset longitudinal deformation amount, the data processing module determines that the demolition does not meet the preset standard and reduces the clamping area of the hydraulic shear during a single demolition process according to the difference between the longitudinal deformation amount of the demolition point and the second preset longitudinal deformation amount.

3. The demolition monitoring system based on building structure change data according to claim 2, characterized in that, The data processing module is provided with several area adjustment methods for reducing the clamping area, and each area adjustment method has a different reduction amplitude for the clamping area.

4. The demolition monitoring system based on building structure change data according to claim 3, wherein, The data processing module re-determines whether the demolition meets the preset standard according to the average value of the deformation amounts of the characteristic points. Among them, If the average value of the deformation amounts of the characteristic points is less than the preset deformation characteristic value, the data processing module re-determines that the demolition meets the preset standard and continues the demolition according to the current construction method; If the average value of the deformation amounts of the characteristic points is greater than or equal to the preset deformation characteristic value, the data processing module re-determines that the demolition does not meet the preset standard and adds temporary support within the first preset radius of the demolition point on the monitoring layer.

5. The demolition monitoring system based on building structure change data according to claim 4, wherein The average value of the deformation amounts of the characteristic points is the average value of the longitudinal deformation amounts of several points on the second preset radius of the demolition point.

6. The demolition monitoring system based on building structure change data according to claim 5, characterized in that, The data processing module issues a warning to stop the demolition in response to the noise anomaly characteristic value being greater than the preset noise anomaly threshold.

7. The demolition monitoring system based on building structure change data according to claim 6, characterized in that, The abnormal noise eigenvalue is jointly determined by the noise loudness and the noise duration obtained by the noise monitoring unit.

8. The demolition monitoring system based on building structure change data according to claim 7, characterized in that, The data processing module synchronously corrects the first preset deformation amount and the second preset deformation amount in response to the correction evaluation value being greater than the preset correction threshold.

9. The demolition monitoring system based on building structure change data according to claim 8, characterized in that, The correction evaluation value is jointly determined according to the damage characteristic coefficient and the strain characteristic coefficient. Wherein, The damage characteristic coefficient is determined according to the crack lengths of the columns and walls obtained by the damage acquisition unit. The strain characteristic coefficient is determined according to the longitudinal strain amounts of the beams and the top surface obtained by the strain acquisition unit.

10. The demolition monitoring system based on building structure change data according to claim 9, characterized in that, The correction amplitudes of the first preset deformation amount and the second preset deformation amount are positively correlated with the correction difference, where the correction difference is the difference between the correction evaluation value and the preset correction threshold.

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