Demolition monitoring system based on building structure change data

Abstract

The application relates to the technical field of building demolition, in particular to a demolition monitoring system based on building structure change data, which comprises a data acquisition module, wherein a laser ranging unit, a damage acquisition unit, a strain acquisition unit and a noise monitoring unit are arranged in the data acquisition module, the laser ranging unit is used to acquire the deformation of a demolition point; the damage acquisition unit is used to acquire the crack length of a column and a wall; the strain acquisition unit is used to acquire the strain of a beam and a top surface; and the noise monitoring unit is used to acquire the noise change; a data processing module is connected with the data acquisition module and used to determine whether the demolition conforms to preset standards; and a display module is connected with the data processing module and used to display a construction adjustment scheme and a warning, so that the precision and reliability of monitoring data are improved, and the safety and efficiency of construction are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building demolition, and in particular to a demolition monitoring system based on building structure change data. BACKGROUND

[0002] With the acceleration of urbanization, building demolition has become an important part of urban renewal and development. However, the structural changes of buildings during demolition are complex and difficult to predict, and any carelessness may cause serious safety accidents such as collapse. Traditional demolition monitoring methods often rely on manual inspection and experience-based judgment, which have poor real-time performance, low accuracy, and are easily affected by human factors.

[0003] Chinese Patent Publication No. CN115162772B discloses a high-rise building demolition process, which belongs to the technical field of building construction, and includes the following steps: S1. Construction preparation; S2. Construction structure building: internal support structure building, which includes a top truss and multiple support columns, the support columns are distributed around the high-rise building to be demolished, the top of the support columns supports and connects the top truss, and each support column can ascend or descend; external wall climbing frame structure building, the external wall climbing frame structure is connected with the support columns through climbing wheels, and a gallery is connected between two climbing wheel groups; S3. Demolition: using an ultra-high pressure water gun to cut and crush the wall, and demolishing the high-rise building layer by layer; S4. Material recycling. It can be seen that the above technical solution lacks real-time monitoring of the demolition process and corresponding early warning measures, resulting in low safety of construction. SUMMARY

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

[0005] To achieve the above-mentioned purpose, the present application provides a demolition monitoring system based on building structure change data, which comprises:

[0006] The data acquisition module comprises 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 longitudinal deformation information of the demolition point on the demolition top surface, wherein the monitoring layer is the next floor of the building demolition layer;

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

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

[0010] a noise monitoring unit arranged on the columns and the beam of the monitoring layer to acquire noise information in the building demolition;

[0011] a data processing module connected to the data acquisition module to determine whether the demolition conforms to the preset standard according to the longitudinal deformation of the demolition point acquired by the laser ranging unit when the demolition does not conform to the preset standard, or to reduce the clamping area of the hydraulic shear in a single demolition process according to the average deformation of the feature points.

[0012] a display module 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 conforms to the preset standard according to the longitudinal deformation of the demolition point acquired by the laser ranging unit, wherein

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

[0015] if the longitudinal deformation of the demolition point is greater than or equal to the first preset longitudinal deformation and less than a second preset longitudinal deformation, the data processing module determines that the demolition does not conform to the preset standard and determines whether the demolition conforms to the preset standard according to the average deformation of the feature points.

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

[0017] Further, the data processing module is provided with a plurality of area adjustment modes for the reduction of the clamping area, and each area adjustment mode has a different reduction amplitude for the clamping area.

[0018] Further, the data processing module determines whether the demolition conforms to the preset standard according to the average deformation of the feature points, wherein

[0019] if the average deformation of the feature points is less than a preset deformation characteristic value, the data processing module determines that the demolition conforms to the preset standard and continues the demolition according to the current construction method;

[0020] If the average of the characteristic point deformation variables is greater than or equal to the preset deformation variable characteristic value, the data processing module determines that the demolition does not meet the preset standard, and increases temporary support within the first preset radius of the monitoring layer at the demolition point.

[0021] Further, the average of the characteristic point deformation variables is the average of the longitudinal deformation variables of a plurality of points within 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 characteristic value being greater than the preset noise anomaly threshold.

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

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

[0025] Further, the correction evaluation value is determined by a damage characteristic coefficient and a strain characteristic coefficient, wherein,

[0026] The damage characteristic coefficient is determined by the crack length of the column and the wall obtained by the damage acquisition unit,

[0027] The strain characteristic coefficient is determined by the longitudinal strain of the beam and the top surface obtained by the strain acquisition unit.

[0028] Further, the correction range of the first preset longitudinal deformation variable and the second preset longitudinal deformation variable is positively correlated with a correction difference value, wherein the correction difference value is the difference between the correction evaluation value and the preset correction threshold.

[0029] Compared with the prior art, the present application has the following advantages: the present application includes a data acquisition module, a data processing module, and a display module, wherein the data acquisition module includes a laser ranging unit, a damage acquisition unit, a strain acquisition unit, and a noise monitoring unit. This all-around 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 analyze and process the collected data in real time, and display the construction adjustment scheme 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 conforms to the preset standard according to the longitudinal deformation of the demolition point obtained by the laser ranging unit, if not, determines whether the demolition conforms to the preset standard according to the mean value of the deformation of the feature point, or reduces the clamping area of the hydraulic shear in a single demolition process according to the difference between the longitudinal deformation of the demolition point and the second preset longitudinal deformation, and introduces the mean value of the deformation of the feature point as the basis for secondary 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 in a single demolition process according to the difference between the longitudinal deformation of the demolition point and the second preset longitudinal deformation, which 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 determines whether the demolition conforms to the preset standard according to the mean value of the deformation of the feature point, if not, increases temporary support within the first preset radius of the demolition point in the monitoring layer, which can effectively protect the surrounding structure and prevent building collapse caused by demolition construction.

[0033] The data processing module sends a warning to stop demolition in response to the noise anomaly characteristic value being greater than the preset noise anomaly threshold, which helps to discover and handle potential safety hazards in time and ensure the safety of construction.

[0034] The data processing module synchronously corrects the first preset longitudinal deformation and the second preset longitudinal deformation in response to the correction evaluation value being greater than the preset correction threshold, and the correction evaluation value is determined according to the damage feature coefficient and the strain feature coefficient, which can automatically adjust the preset standard according to the feedback in the actual demolition process, and improve the adaptability and efficiency of construction. BRIEF DESCRIPTION OF DRAWINGS

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

[0036] Figure 2 It is a flowchart of determining whether the demolition conforms to the preset standard according to the longitudinal deformation of the demolition point obtained by the laser ranging unit of the embodiment of the application;

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

[0038] Figure 4A flow chart for determining whether the demolition conforms to the preset standard according to the mean value of the deformation variables of the feature points by the embodiment of the present application. DETAILED DESCRIPTION

[0039] In order to make the objects and advantages of the present application clearer, the present application 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 application and should not be used to limit the present application.

[0040] Those skilled in the art can understand that the determination mode of the system of the present application for a single item of the above parameters can be selecting the value with the highest proportion according to the data distribution as the preset standard parameter, using weighted summation to obtain the value as the preset standard parameter, substituting each historical data into a specific formula and using the value obtained by the formula as the preset standard parameter or other selection modes, as long as the system of the present application can clearly define different specific situations in the single item determination process through the obtained value.

[0041] The preferred embodiments of the present application 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 principles of the present application and are not used to limit the protection scope of the present application.

[0042] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , which are respectively a module connection diagram of a demolition monitoring system based on building structure change data according to an embodiment of the present application, a flow chart for determining whether the demolition conforms to the preset standard according to the longitudinal deformation variable of the demolition point obtained by the laser ranging unit according to an embodiment of the present application, a flow chart for reducing the clamping area of the hydraulic shear in a single demolition process according to the deformation variable difference, and a flow chart for determining whether the demolition conforms to the preset standard according to the mean value of the deformation variables of the feature points twice according to an embodiment of the present application.

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

[0044] The data acquisition module comprises 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, and is used to acquire the longitudinal deformation information of the demolition point on the demolition top surface, wherein the monitoring layer is the next floor of the demolition layer of the building.

[0046] The damage acquisition unit is used to acquire the crack length of the column and the wall of the monitoring layer.

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

[0048] a noise monitoring unit arranged on the columns and the beam of the monitoring layer to acquire noise information in the building demolition;

[0049] a data processing module connected to the data acquisition module to determine whether the demolition conforms to the preset standard according to the longitudinal deformation of the demolition point acquired by the laser ranging unit, or to determine whether the demolition conforms to the preset standard according to the average deformation of the feature point, or to reduce the clamping area of the hydraulic shear in the single demolition process according to the difference between the longitudinal deformation of the demolition point and the second preset longitudinal deformation when the demolition does not conform to the preset standard;

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

[0051] Specifically, the laser ranging unit, for example, a laser range finder, is specifically not limited, to acquire the deformation of the demolition point.

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

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

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

[0055] Specifically, the data processing module determines whether the demolition conforms to the preset standard according to the longitudinal deformation of the demolition point acquired by the laser ranging unit, wherein,

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

[0057] If the longitudinal deformation of the demolition point is greater than or equal to the first preset longitudinal deformation and less than the second preset longitudinal deformation 0.30m, the data processing module determines that the demolition does not conform to the preset standard, and determines whether the demolition conforms to the preset standard according to the average deformation of the feature point.

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

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

[0060] If the deformation difference is less than a first preset longitudinal deformation difference 0.08m, the clamping area is reduced to a corresponding value using a first area adjustment coefficient 0.95;

[0061] If the deformation difference is greater than or equal to the first preset longitudinal deformation difference and less than a second preset longitudinal deformation difference 0.13m, the clamping area is reduced to a corresponding value using a second area adjustment coefficient 0.89;

[0062] If the deformation difference is greater than or equal to the second preset longitudinal deformation difference, the clamping area is reduced to a corresponding value using a third area adjustment coefficient 0.82;

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

[0064] Specifically, the data processing module determines whether the demolition conforms to the preset standard according to the mean value of the deformation of the feature points, wherein,

[0065] If the mean value of the deformation of the feature points is less than a preset deformation feature value 0.03m, the data processing module determines that the demolition conforms to the preset standard and continues to demolish according to the current construction method;

[0066] If the mean value of the deformation of the feature points is greater than or equal to the preset deformation feature value, the data processing module determines that the demolition does not conform to the preset standard, and increases temporary support within a first preset radius 2.5m of the demolition point in the monitoring layer.

[0067] Specifically, the mean value of the deformation of the feature points is an average value of the longitudinal deformation of a plurality of points within a second preset radius 0.80m of the demolition point.

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

[0069] Specifically, the noise anomaly feature value is determined by the noise loudness and 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 a noise anomaly characteristic value, a represents a first evaluation coefficient, a is set to 0.65, L represents a noise loudness, Ly represents a noise loudness threshold, Ly is set to 100 dB, β represents a second evaluation coefficient, β is set to 0.32, T represents a noise duration, Ty represents a noise duration threshold, and Ty is set to 10 s.

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

[0074] Specifically, the correction evaluation value is determined according to a damage characteristic coefficient and a strain characteristic coefficient.

[0075] The damage characteristic coefficient is determined according to a crack length of a column and a wall obtained by the damage acquisition unit.

[0076] The strain characteristic coefficient is determined according to a longitudinal strain variable of a beam and a top surface obtained by the strain acquisition unit. Specifically, the correction evaluation value is calculated by the following formula:

[0077] E = λD + μS

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

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

[0080] Specifically, the data processing module synchronously corrects the first preset longitudinal deformation variable and the second preset longitudinal deformation variable according to a correction difference value, wherein,

[0081] If the correction difference value is less than a first preset correction difference value of 0.05, the first preset longitudinal deformation variable and the second preset longitudinal deformation variable are corrected to corresponding values using a first correction coefficient of 0.991.

[0082] If the correction difference value is greater than or equal to the first preset correction difference value and less than a second preset correction difference value of 0.12, the first preset longitudinal deformation variable and the second preset longitudinal deformation variable are corrected to corresponding values using a second correction coefficient of 0.985.

[0083] The correction difference is greater than or equal to the second preset correction difference, and the first preset longitudinal deformation variable and the second preset longitudinal deformation variable are corrected to corresponding values by using a third correction coefficient 0.980.

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

[0085] So far, the technical solutions of the present application have been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical solutions after the changes or replacements will fall within the protection scope of the present application.

[0086] The above description is only the preferred embodiments of the present application and is not intended to limit the present application; for those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A demolition monitoring system based on building structure change data, characterized by, The application relates to a building demolition monitoring system, which comprises a data acquisition module, a data processing module and a display module. The data acquisition module comprises a laser ranging unit, a damage acquisition unit, a strain acquisition unit and a noise monitoring unit. The laser ranging unit is arranged in a matrix mode on the ground of a monitoring layer, and is used for acquiring longitudinal deformation information of a demolition point on a demolition top surface. The damage acquisition unit is used for acquiring crack lengths of columns and walls of the monitoring layer. The strain acquisition unit is arranged in a matrix mode on the top surface of the monitoring layer, and is used for acquiring longitudinal strain information of beams and the top surface. The noise monitoring unit is arranged on the columns and beams of the monitoring layer, and is used for acquiring noise information in the building demolition. The data processing module is connected with the data acquisition module, and is used for judging whether the demolition conforms to a preset standard according to a longitudinal deformation variable of the demolition point acquired by the laser ranging unit when the demolition does not conform to the preset standard. The display module is connected with the data processing module, and displays the judgment result of the data processing module. The data processing module judges whether the demolition conforms to the preset standard according to the longitudinal deformation variable of the demolition point acquired by the laser ranging unit. If the longitudinal deformation variable of the demolition point is less than a first preset longitudinal deformation variable, the data processing module judges that the demolition conforms to the preset standard, and continues the demolition according to the current construction mode. If the longitudinal deformation variable of the demolition point is greater than or equal to the first preset longitudinal deformation variable and less than a second preset longitudinal deformation variable, the data processing module judges that the demolition does not conform to the preset standard, and judges whether the demolition conforms to the preset standard according to a mean value of characteristic point deformation variables. If the longitudinal deformation variable of the demolition point is greater than or equal to the second preset longitudinal deformation variable, the data processing module judges that the demolition does not conform to the preset standard, and reduces the clamping area of a hydraulic shear in a single demolition process according to a difference between the longitudinal deformation variable of the demolition point and the second preset longitudinal deformation variable. The data processing module synchronously corrects the first preset longitudinal deformation variable and the second preset longitudinal deformation variable in response to a correction evaluation value being greater than a preset correction threshold value. The correction evaluation value is determined according to a damage characteristic coefficient and a strain characteristic coefficient. The damage characteristic coefficient is determined according to the crack lengths of the columns and the walls acquired by the damage acquisition unit. The strain characteristic coefficient is determined according to the longitudinal strain variables of the beams and the top surface acquired by the strain acquisition unit. The correction range of the first preset longitudinal deformation variable and the second preset longitudinal deformation variable is positively correlated with a correction difference value, and the correction difference value is a difference between the correction evaluation value and the preset correction threshold value.

2. The building structure change data-based demolition monitoring system according to claim 1, characterized by, The data processing module is provided with a plurality of area adjustment modes for the reduction of the clamping area, and each area adjustment mode has a different reduction range of the clamping area.

3. The building structure change data-based demolition monitoring system according to claim 2, characterized by, The data processing module judges whether the demolition conforms to the preset standard according to the mean value of the characteristic point deformation variables. If the average of the deformation variables of the feature points is less than a preset deformation variable characteristic value, the data processing module secondarily determines that the demolition conforms to the preset standard, and continues the demolition according to the current construction mode; If the average of the deformation variables of the feature points is greater than or equal to the preset deformation variable characteristic value, the data processing module secondarily determines that the demolition does not conform to the preset standard, and increases temporary support within a first preset radius of the demolition point in the monitoring layer.

4. The building structure change data-based demolition monitoring system according to claim 3, characterized by, The average of the deformation variables of the feature points is an average of longitudinal deformation variables of a plurality of points in a second preset radius of the demolition point.

5. The building structure change data-based demolition monitoring system according to claim 4, characterized by, The data processing module issues a warning to stop the demolition in response to the noise anomaly characteristic value being greater than a preset noise anomaly threshold.

6. The building structure change data-based demolition monitoring system according to claim 5, characterized by, The noise anomaly characteristic value is determined by noise loudness and noise duration obtained by the noise monitoring unit.

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