Quality monitoring system for constructional engineering

Abstract

The invention relates to the field of constructional engineering quality monitoring, in particular to a constructional engineering quality monitoring system, which is provided with a model memory for storing template modeling models of buildings existing in each building area; the characteristic monitor is used for monitoring environment characteristics of each building area; the settlement analyzer is connected with the feature monitor and is used for determining settlement tendency characterization parameters according to the environment features collected by the feature monitor in combination with the soil hardness of each building area and setting settlement tendency category labels for each building area based on the settlement tendency characterization parameters; the analysis modeling device is connected with the model storage device, the feature monitor and the settlement analyzer and used for adaptively conducting modeling analysis on all the building areas according to the settlement tendency category labels corresponding to all the building areas, on the premise that the reliability of monitoring data is guaranteed, accurate quality evaluation is conducted on the building engineering, and meanwhile the analysis modeling device is used for analyzing the settlement tendency category labels of all the building areas. And computing power resources are saved.

Description

Technical Field

[0001] The invention relates to the field of construction engineering quality monitoring, and in particular to a construction engineering quality monitoring system. Background Art

[0002] With the rapid economic development and high-quality growth, the construction industry's demand for quality and safety continues to increase, which has promoted the development of construction project quality monitoring systems. Data acquisition and processing technology can process and analyze the data collected by sensors in real time, providing monitoring personnel with intuitive building status information, improving monitoring management effects and monitoring work levels. The development of these technologies enables building monitoring systems to operate more efficiently and improves the accuracy and timeliness of monitoring.

[0003] Chinese patent application publication number: CN116823064A, discloses a construction project quality monitoring system based on BIM technology, which includes a server, a BIM model building module, a building deviation monitoring and management module, a construction material inspection and supervision module and a construction environmental impact assessment module; the invention performs building deviation comparison detection on the corresponding construction project to determine whether the building deviation of the corresponding constructed part of the construction project is qualified, and inspects and analyzes all construction materials of the corresponding construction project one by one to determine whether the quality of the corresponding construction materials is qualified, and analyzes the environmental conditions of all sub-areas of the corresponding construction project one by one to determine whether the environment of the corresponding sub-area is qualified, and by setting a comprehensive evaluation cycle and conducting engineering supervision intensity assessment and analysis, the management intensity of the corresponding construction project is strengthened when a strong engineering supervision signal is generated, thereby effectively ensuring the construction quality and construction safety of the construction project.

[0004] However, there are still the following problems in the prior art:

[0005] During the quality monitoring process of acceptance and evaluation of construction projects, a unified monitoring method is used, and no targeted and detailed monitoring is carried out on building areas with high settlement tendency, which reduces the accuracy of monitoring. At the same time, when conducting periodic monitoring of large-scale construction projects, the use of the same standard is likely to cause a waste of computing resources. Summary of the invention

[0006] To this end, the present invention provides a system for monitoring the quality of construction projects, so as to overcome the problem in the prior art that a unified monitoring method is adopted in the quality monitoring process for acceptance and evaluation of construction projects, and more detailed targeted monitoring is not carried out for building areas with high settlement tendency, thereby reducing the accuracy of monitoring. At the same time, when conducting periodic monitoring of large-area construction projects, the use of the same standard is likely to cause a waste of computing resources.

[0007] To achieve the above object, the present invention provides a system for monitoring the quality of construction projects, comprising:

[0008] A model memory for storing sample modeling models of buildings existing in each building area;

[0009] A feature monitor for monitoring the environmental features of each of the building areas, including a vibration acquisition unit for monitoring the vibration intensity of equipment in each of the building areas, an image acquisition unit for monitoring the stacking density of objects in each of the building areas, and a scanning unit for acquiring building scanning data in the building area;

[0010] A settlement analyzer connected to the feature monitor, for determining a settlement tendency characterization parameter according to the environmental features collected by the feature monitor in combination with the soil hardness of each of the building areas, and setting a settlement tendency category label for each of the building areas based on the settlement tendency characterization parameter;

[0011] An analytical modeler is connected to the model storage, the feature monitor and the settlement analyzer respectively, and is used to perform modeling analysis on each of the building areas according to the settlement tendency category label corresponding to each of the building areas, including:

[0012] Performing three-dimensional modeling on the buildings existing in the building area, obtaining a surface feature analysis building quality representation value of the building model according to the modeled building model to determine whether the building corresponding to the building model meets the quality standard, calling the template modeling model stored in the model memory for offset comparison to determine whether it is necessary to perform internal damage detection on the interior of the building;

[0013] Or, adjusting the monitoring period of the characteristic monitor according to the sedimentation tendency characterization parameter;

[0014] The surface features include the texture roughness and surface crack width of the building model.

[0015] Furthermore, the process of the settlement analyzer determining the settlement tendency characterization parameter according to the environmental characteristics collected by the characteristic monitor in combination with soil hardness includes:

[0016] The sum of the ratio of the average vibration intensity of the equipment in the building area to the vibration intensity threshold and the ratio of the stacking density of the objects in the building area to the stacking density threshold of the objects is used as the first settlement feature;

[0017] to determine a ratio of a soil hardness threshold to the soil hardness of the building area as a second settlement feature;

[0018] The first sedimentation characteristic and the second sedimentation characteristic are weightedly summed to determine a sedimentation tendency characterization parameter.

[0019] Furthermore, the settlement analyzer is used to set a settlement tendency category label for each of the building areas based on the settlement tendency characterization parameter, including

[0020] If the settlement tendency characterization parameter is greater than or equal to the settlement tendency characterization parameter threshold, the label of the building area is set as the settlement tendency label;

[0021] If the settlement tendency characterization parameter is less than the settlement tendency characterization parameter threshold, the label of the building area is set to a non-settlement tendency label.

[0022] Furthermore, the analytical modeler is used to perform modeling analysis on each of the building areas according to the settlement tendency category label corresponding to each of the building areas, including

[0023] If the label set in the building area is a settlement tendency label, three-dimensional modeling is performed on the buildings in the building area, and a surface feature analysis building quality representation value of the building model is obtained according to the modeled building model to determine whether the building corresponding to the building model meets the quality standard, and the template modeling model stored in the model memory is called for offset comparison to determine whether internal damage detection is required inside the building;

[0024] If the tag set for the building area is a non-settlement tendency tag, the monitoring period of the characteristic monitor is adjusted according to the settlement tendency characterization parameter.

[0025] Furthermore, the process of the analytical modeler obtaining the surface feature analytical building quality representation value of the building model according to the modeled building model includes:

[0026] Using the ratio of the texture roughness of the building model to the texture roughness threshold as the first quality feature;

[0027] The ratio of the surface crack width of the building model to the surface crack width threshold is used as the second quality feature;

[0028] Used to determine the sum of the first quality feature and the second quality feature as a building quality characterization value.

[0029] Furthermore, the analytical modeler is used to determine whether the building corresponding to the building model meets the quality standards, including:

[0030] If the building quality characterization value is less than the building quality characterization quality threshold, it is determined that the building corresponding to the building model meets the quality standards.

[0031] Furthermore, the process of the analytical modeler calling the template modeling model stored in the model memory for offset comparison includes:

[0032] For placing the sample modeling model and the building model in the same spatial rectangular coordinate system and comparing them;

[0033] Used to determine the degree of overlap between the building model and the sample building model.

[0034] Furthermore, the analytical modeler is used to determine whether internal damage detection is required inside the building, including:

[0035] If the degree of overlap between the building model and the sample building model is greater than or equal to the overlap threshold, it is determined that internal damage detection is required inside the building.

[0036] Furthermore, the analytical modeler is used to adjust the monitoring period of the characteristic monitor according to the sedimentation tendency characterization parameter, including:

[0037] The monitoring period of the characteristic monitor is shortened, and the shortening amount of the monitoring period is negatively correlated with the parameter characterizing the sedimentation tendency.

[0038] Furthermore, each of the building areas needs to be equipped with at least one vibration acquisition unit, an image acquisition unit and a scanning unit.

[0039] Compared with the prior art, the present invention is provided with a model storage device for storing sample modeling models of buildings existing in each building area; a feature monitor for monitoring the environmental characteristics of each building area, including a vibration acquisition unit for monitoring the vibration intensity of equipment in each building area and an image acquisition unit for monitoring the stacking density of objects in each building area; a settlement analyzer connected to the feature monitor for determining settlement tendency characterization parameters according to the environmental characteristics acquired by the feature monitor in combination with the soil hardness of each building area, and setting a settlement tendency category label for each building area based on the settlement tendency characterization parameters; an analytical modeler connected to the model storage device, the feature monitor and the settlement analyzer respectively, for adaptively modeling and analyzing each building area according to the settlement tendency category label corresponding to each building area. The present invention can accurately evaluate the quality of construction projects while ensuring the reliability of monitoring data, and at the same time save computing resources.

[0040] In particular, the present invention determines the settlement tendency characterization parameter according to the environmental characteristics combined with the soil hardness of each building area. In actual situations, for a project in a building complex area composed of several buildings, after the construction is completed, it is necessary to conduct quality monitoring of the entire building complex area for acceptance evaluation. Among them, there are a large number of objects piled up and large-scale construction machinery and equipment placed in the building area. The large amount of dense accumulation of these objects in the area may cause the corresponding soil to be compacted and deformed; in the process of construction of the building project, the vibration of the foundation construction and other machinery and equipment may also cause the settlement and lateral displacement of the local soil; at the same time, the change in soil hardness may cause the compaction deformation of the soil and the settlement of the soil caused by the above situation. The settlement will also have a certain degree of influence. For example, if the soil hardness is relatively low, the soil compaction deformation and soil settlement in the corresponding building area will be relatively higher. However, under the combined influence of the above conditions, the hardness of the soil will also increase accordingly. These factors need to be included in the monitoring scope when conducting acceptance and evaluation of construction projects. They are related to the stability of the foundation and the safety of the building, and also to ensure the accuracy of the quality acceptance of construction projects. Therefore, this application uses settlement tendency characterization parameters to characterize the degree of soil settlement and building lateral displacement in each building area, so as to provide data support for the subsequent setting of settlement tendency category labels for each building area, so as to adaptively model and analyze each building area.

[0041] In particular, the present invention models and analyzes each building area in different ways according to the different settlement tendency category labels corresponding to each building area. For the building area set with a high settlement tendency label, the buildings existing in the building area are modeled, and the abnormalities of the building are preliminarily analyzed according to the surface characteristics of the obtained building model. In actual situations, the settlement of the soil will have a corresponding impact on the building. For example, ground settlement will cause the foundation of the building to shift or deform. When the foundation or foundation of the building has uneven settlement, additional stress will be generated in the wall of the building. If these stresses exceed the ultimate strength of the wall, cracks may appear in the weak parts of the wall, and as the uneven settlement increases, the cracks will continue to increase. Therefore, the building quality characterization value is analyzed according to the building surface texture roughness and the width of the surface cracks presented by the building model to comprehensively evaluate the building. The degree of settlement and displacement tendency is used to determine whether the building meets the quality standards. If the building does not meet the quality standards, an offset comparison is performed between the standard sample building model archived before the official start of construction and the current building model. The settlement and displacement degree of the building is determined by the degree of overlap of the two models in the same spatial rectangular coordinate system. If the overlap between the current building model and the sample building model is too low, it indicates that the degree of settlement or displacement of the building is too high. At this time, further detection of the damage inside the building is required to more accurately determine the quality of the building. For building areas set with low settlement tendency labels, areas of this category are not prone to settlement. The monitoring cycle is adjusted according to the settlement tendency characterization parameters. The risk tendency presented in the first monitoring of the quality acceptance assessment of the completion of the construction project is low and relatively solid and stable, thereby reducing the subsequent monitoring cycle, saving computing resources, and reducing computing power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A functional module diagram of a construction engineering quality monitoring system according to an embodiment of the invention;

[0043] Figure 2 A logical decision diagram for setting a settlement tendency category label for each building area in an embodiment of the invention;

[0044] Figure 3 A logical decision diagram for determining whether a building corresponding to a building model meets quality standards for an embodiment of the invention;

[0045] Figure 4 This is a logical decision diagram for determining whether it is necessary to perform internal damage detection on the interior of a building according to an embodiment of the invention. DETAILED DESCRIPTION

[0046] In order to make the objects and advantages of the present invention more clearly understood, the present invention is 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.

[0047] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0048] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] See also Figures 1 to 4 As shown, Figure 1 is a functional module diagram of a construction engineering quality monitoring system according to an embodiment of the present invention, Figure 2 This is a logic decision diagram for setting settlement tendency category labels for each building area in an embodiment of the present invention. Figure 3 A logical decision diagram for determining whether a building corresponding to a building model meets quality standards according to an embodiment of the invention, Figure 4 The present invention is a logic decision diagram for determining whether to perform internal damage detection on the interior of a building. The present invention is a system for monitoring the quality of construction projects, which includes:

[0050] A model memory for storing sample modeling models of buildings existing in each building area;

[0051] A feature monitor for monitoring the environmental features of each of the building areas, including a vibration acquisition unit for monitoring the vibration intensity of equipment in each of the building areas, an image acquisition unit for monitoring the stacking density of objects in each of the building areas, and a scanning unit for acquiring building scanning data in the building area;

[0052] A settlement analyzer connected to the feature monitor, for determining a settlement tendency characterization parameter according to the environmental features collected by the feature monitor in combination with the soil hardness of each of the building areas, and setting a settlement tendency category label for each of the building areas based on the settlement tendency characterization parameter;

[0053] An analytical modeler is connected to the model storage, the feature monitor and the settlement analyzer respectively, and is used to perform modeling analysis on each of the building areas according to the settlement tendency category label corresponding to each of the building areas, including:

[0054] Performing three-dimensional modeling on the buildings existing in the building area, obtaining a surface feature analysis building quality representation value of the building model according to the modeled building model to determine whether the building corresponding to the building model meets the quality standard, calling the template modeling model stored in the model memory for offset comparison to determine whether it is necessary to perform internal damage detection on the interior of the building;

[0055] Or, adjusting the monitoring period of the characteristic monitor according to the sedimentation tendency characterization parameter;

[0056] The surface features include the texture roughness and surface crack width of the building model.

[0057] Specifically, there is no specific limitation on the storage method of the sample building model of the buildings existing in each building area. For example, the sample building model can be pre-constructed by technical personnel in this field and synchronously stored in the database, which will not be elaborated here.

[0058] Specifically, there is no specific limitation on the structure of the vibration collection unit, which only needs to have the function of monitoring the vibration intensity of equipment in each building area. For example, vibration sensors can be deployed in each building area. Of course, other forms can also be used, which will not be repeated here.

[0059] Specifically, there is no specific limitation on the structure of the image acquisition unit, which only needs to have the function of monitoring the stacking density of objects in each building area. For example, images can be collected by using a drone equipped with a high-definition camera. Of course, other forms can also be used, which will not be elaborated here.

[0060] Specifically, there is no limitation on the specific structure of the model memory, sedimentation analyzer and analytical modeler, which themselves or each unit therein can be composed of logic components or a combination of logic components, and the logic components include a field programmable processor, a computer or a microprocessor in a computer.

[0061] Specifically, there is no limitation on the specific form of the scanning unit. For example, when modeling a large area, a depth photography device can be used to obtain scanning data, and a three-dimensional model can be constructed based on the scanning data. This is a prior art and will not be described in detail.

[0062] Specifically, the process of the settlement analyzer determining the settlement tendency characterization parameter according to the environmental characteristics collected by the characteristic monitor in combination with soil hardness includes:

[0063] The sum of the ratio of the average vibration intensity of the equipment in the building area to the vibration intensity threshold and the ratio of the stacking density of the objects in the building area to the stacking density threshold of the objects is used as the first settlement feature;

[0064] to determine a ratio of a soil hardness threshold to the soil hardness of the building area as a second settlement feature;

[0065] The first sedimentation characteristic and the second sedimentation characteristic are weightedly summed to determine a sedimentation tendency characterization parameter.

[0066] In this embodiment, when performing weighted summation, the weight of the first sedimentation feature is set to 0.55, and the weight of the second sedimentation feature is set to 0.45;

[0067] The vibration intensity threshold in the construction area, the object stacking density threshold in the construction area and the soil hardness threshold in the construction area are pre-set, and historical data obtained during quality monitoring of several construction projects that have completed construction and meet quality standards are obtained. The vibration intensity data, the object stacking density data and the soil hardness data are called to calculate the average vibration intensity, the average object stacking density and the average soil hardness. The vibration intensity threshold is set to 1.02 to 1.12 times the average vibration intensity, the object stacking density threshold is set to 1.05 to 1.15 times the average object stacking density, and the soil hardness threshold is set to 1.14 to 1.24 times the average soil hardness.

[0068] The present invention determines the settlement tendency characterization parameter according to the environmental characteristics combined with the soil hardness of each building area. In actual situations, for a project in a building complex area composed of several buildings, after the construction is completed, it is necessary to conduct quality monitoring of the entire building complex area for acceptance evaluation. In the building area, there are a large number of objects piled up and large-scale construction machinery and equipment placed. The large number of densely packed objects in the area may cause the corresponding soil to be compacted and deformed; in the process of construction of the building project, the vibration of the foundation construction and other machinery and equipment may also cause the settlement and lateral displacement of the local soil; at the same time, the change of soil hardness may also cause the compaction deformation and settlement of the soil caused by the above situation. It will have a certain degree of influence. For example, if the soil hardness is relatively low, the soil compaction deformation and soil settlement in the corresponding building area will be relatively higher. However, under the combined influence of the above conditions, the hardness of the soil will also increase accordingly. These factors need to be included in the monitoring scope when conducting acceptance and evaluation of construction projects. They are related to the stability of the foundation and the safety of the building, and also to ensure the accuracy of the quality acceptance of construction projects. Therefore, this application uses settlement tendency characterization parameters to characterize the degree of soil settlement and building lateral displacement in each building area, and provides data support for the subsequent setting of settlement tendency category labels for each building area, so as to adaptively model and analyze each building area.

[0069] Specifically, the settlement analyzer is used to set a settlement tendency category label for each of the building areas based on the settlement tendency characterization parameter, including

[0070] If the settlement tendency characterization parameter is greater than or equal to the settlement tendency characterization parameter threshold, the label of the building area is set as the settlement tendency label;

[0071] If the settlement tendency characterization parameter is less than the settlement tendency characterization parameter threshold, the label of the building area is set to a non-settlement tendency label.

[0072] The threshold value of the sedimentation clearance parameter is selected in the interval [1.83,1.97].

[0073] Specifically, the analytical modeler is used to perform modeling analysis on each of the building areas according to the settlement tendency category labels corresponding to each of the building areas, including:

[0074] If the label set in the building area is a settlement tendency label, three-dimensional modeling is performed on the buildings in the building area, and a surface feature analysis building quality representation value of the building model is obtained according to the modeled building model to determine whether the building corresponding to the building model meets the quality standard, and the template modeling model stored in the model memory is called for offset comparison to determine whether internal damage detection is required inside the building;

[0075] If the tag set for the building area is a non-settlement tendency tag, the monitoring period of the characteristic monitor is adjusted according to the settlement tendency characterization parameter.

[0076] Specifically, the process of obtaining the surface feature analytical building quality representation value of the building model according to the modeled building model by the analytical modeler includes:

[0077] Using the ratio of the texture roughness of the building model to the texture roughness threshold as the first quality feature;

[0078] The ratio of the surface crack width of the building model to the surface crack width threshold is used as the second quality feature;

[0079] Used to determine the sum of the first quality feature and the second quality feature as a building quality characterization value.

[0080] In this embodiment, the texture roughness threshold of the building model and the surface crack width threshold of the building model are pre-set, and historical data obtained during quality monitoring of several construction projects that have completed construction and meet quality standards are obtained. The texture roughness data of the building model and the surface crack width data of the building model are called to calculate the texture roughness mean and the surface crack width mean. The texture roughness threshold is set to 1.12 times to 1.17 times the texture roughness mean, and the surface crack width threshold is set to 1.01 times to 1.11 times the surface crack width mean.

[0081] It can be understood that the texture roughness refers to the area of ​​the building model. Usually, an area of ​​1 square meter can be obtained for quantification, which will not be elaborated here.

[0082] Specifically, there is no limitation on the specific method of texture roughness. For example, the texture profile can be identified and calculated by the number and average height of the texture profile. In this embodiment, the process of solving the texture roughness is to calculate the ratio of the number of texture profiles to a predetermined number threshold to obtain a first texture roughness feature, and calculate the ratio of the average height of the texture profile to a predetermined height threshold to obtain a second texture roughness feature. The texture roughness is the sum of the first texture roughness feature and the second texture roughness feature.

[0083] It can be understood that the maximum height of the model area in the texture profile can be obtained through the three-dimensional model, and then the average height can be solved;

[0084] The predetermined quantity threshold and the predetermined height threshold are predetermined, wherein a number of building models are obtained, the corresponding number mean of texture contours and the average height mean of texture contours are determined, the number mean of texture contours is set as the predetermined quantity threshold, and the average height mean of texture contours is set as the predetermined height threshold.

[0085] Specifically, the analytical modeler is used to determine whether the building corresponding to the building model meets the quality standards, including:

[0086] If the building quality representation value is less than the building quality representation quality threshold, it is determined that the building corresponding to the building model meets the quality standard;

[0087] If the building quality representation value is greater than or equal to the building quality representation quality threshold, it is determined that the building corresponding to the building model does not meet the quality standards.

[0088] The building quality characterization threshold is selected in the interval [1.78,1.89].

[0089] Specifically, the process of the analytical modeler calling the template modeling model stored in the model memory for offset comparison includes:

[0090] For placing the sample modeling model and the building model in the same spatial rectangular coordinate system and comparing them;

[0091] Used to determine the degree of overlap between the building model and the sample building model.

[0092] Specifically, the analytical modeler is used to determine whether internal damage detection is required inside the building, including:

[0093] If the degree of overlap between the building model and the sample building model is greater than or equal to the overlap threshold, it is determined that internal damage detection needs to be performed on the interior of the building;

[0094] If the degree of overlap between the building model and the sample building model is less than the overlap threshold, it is determined that there is no need to perform internal damage detection on the interior of the building.

[0095] In this embodiment, the overlap threshold between the modeling model and the model building model is pre-set, and the historical data of overlap between the building model and the model building model obtained during quality monitoring of several construction projects that have completed construction and met quality standards are called to calculate the average overlap setting, and the overlap threshold is 1.03 to 1.11 times the average overlap.

[0096] Specifically, there is no limitation on the specific method of detecting internal damage of a building. For example, ultrasonic technology can be used for detection to analyze the reflection and scattering of sound waves in the material to identify internal defects. This will not be elaborated here.

[0097] Specifically, the analytical modeler is used to adjust the monitoring period of the characteristic monitor according to the sedimentation tendency characterization parameter, including:

[0098] The monitoring period of the characteristic monitor is shortened, and the shortening amount of the monitoring period is negatively correlated with the parameter characterizing the sedimentation tendency.

[0099] In this embodiment, optionally,

[0100] The sedimentation tendency characterization parameter is compared with a preset first sedimentation tendency characterization parameter comparison threshold and a second sedimentation tendency characterization parameter comparison threshold,

[0101] When the sedimentation tendency characterization parameter is greater than the second sedimentation tendency characterization parameter comparison threshold, the shortening amount of the monitoring period is determined to be the shortening amount of the first monitoring period, and the shortening amount of the first monitoring period is set to be 0.36 times of the reference monitoring period;

[0102] When the settlement tendency characterization parameter is greater than or equal to the first settlement tendency characterization parameter comparison threshold and less than or equal to the second settlement tendency characterization parameter comparison threshold, the shortening amount of the monitoring period is determined to be the shortening amount of the second monitoring period, and the shortening amount of the second monitoring period is set to be 0.45 times of the reference monitoring period;

[0103] When the sedimentation tendency characterization parameter is less than the first sedimentation tendency characterization parameter comparison threshold, the shortening amount of the monitoring period is determined to be the shortening amount of the third monitoring period, and the shortening amount of the third monitoring period is set to be 0.54 times of the benchmark monitoring period;

[0104] Among them, the first sedimentation tendency characterization parameter comparison threshold is 0.75 times the sedimentation tendency characterization parameter threshold, and the second sedimentation tendency characterization parameter comparison threshold is 0.9 times the sedimentation tendency characterization parameter threshold.

[0105] Specifically, the monitoring cycle is a cycle for acquiring scanning data for a building area so as to regularly model the buildings in the area.

[0106] The present invention models and analyzes each building area in different ways according to the different settlement tendency category labels corresponding to each building area. For the building area set as a high settlement tendency label, the buildings existing in the building area are modeled, and the abnormalities of the building are preliminarily analyzed according to the surface characteristics of the obtained building model. In actual situations, the settlement of the soil will have a corresponding impact on the building. For example, ground settlement will cause the foundation of the building to shift or deform. When the foundation or foundation of the building has uneven settlement, additional stress will be generated in the wall of the building. If these stresses exceed the ultimate strength of the wall, cracks may appear in the weak parts of the wall, and as the uneven settlement increases, the cracks will continue to increase. Therefore, the building quality characterization value is analyzed according to the building surface texture roughness and the width of the surface cracks presented by the building model to comprehensively evaluate the settlement of the building. The settlement and displacement tendency of the building is determined to determine whether the building meets the quality standards. If the building does not meet the quality standards, an offset comparison is performed between the standard sample building model archived before the official start of construction and the current building model. The degree of settlement and displacement of the building is determined by the degree of overlap of the two models in the same spatial rectangular coordinate system. If the overlap between the current building model and the sample building model is too low, it indicates that the degree of settlement or displacement of the building is too high. At this time, further detection of the damage inside the building is required to more accurately determine the quality of the building. For building areas set with low settlement tendency labels, areas of this category are not prone to settlement. The monitoring period is adjusted according to the settlement tendency characterization parameters. The risk tendency presented in the first monitoring of the quality acceptance assessment of the completion of the construction project is low and relatively solid and stable, thereby reducing the subsequent monitoring period, saving computing resources, and reducing computing power consumption.

[0107] Specifically, each of the building areas needs to be equipped with at least one vibration acquisition unit, an image acquisition unit and a scanning unit.

[0108] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying 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.

Claims

1. A system for monitoring the quality of construction projects, characterized in that: include: A model memory for storing sample modeling models of buildings existing in each building area; A feature monitor for monitoring the environmental features of each of the building areas, including a vibration acquisition unit for monitoring the vibration intensity of equipment in each of the building areas, an image acquisition unit for monitoring the stacking density of objects in each of the building areas, and a scanning unit for acquiring building scanning data in the building area; A settlement analyzer connected to the feature monitor, for determining a settlement tendency characterization parameter according to the environmental features collected by the feature monitor in combination with the soil hardness of each of the building areas, and setting a settlement tendency category label for each of the building areas based on the settlement tendency characterization parameter; An analytical modeler is connected to the model storage, the feature monitor and the settlement analyzer respectively, and is used to perform modeling analysis on each of the building areas according to the settlement tendency category label corresponding to each of the building areas, including: Performing three-dimensional modeling on the buildings existing in the building area, obtaining a surface feature analysis building quality representation value of the building model according to the modeled building model to determine whether the building corresponding to the building model meets the quality standard, calling the template modeling model stored in the model memory for offset comparison to determine whether it is necessary to perform internal damage detection on the interior of the building; Or, adjusting the monitoring period of the characteristic monitor according to the sedimentation tendency characterization parameter; The surface features include the texture roughness and surface crack width of the building model.

2. The construction engineering quality monitoring system according to claim 1, characterized in that: The process of the settlement analyzer determining the settlement tendency characterization parameter according to the environmental characteristics collected by the characteristic monitor and the soil hardness includes: The sum of the ratio of the average vibration intensity of the equipment in the building area to the vibration intensity threshold and the ratio of the stacking density of the objects in the building area to the stacking density threshold of the objects is used as the first settlement feature; to determine a ratio of a soil hardness threshold to the soil hardness of the building area as a second settlement feature; The first sedimentation characteristic and the second sedimentation characteristic are weightedly summed to determine a sedimentation tendency characterization parameter.

3. The construction engineering quality monitoring system according to claim 1, characterized in that: The settlement analyzer is used to set a settlement tendency category label for each of the building areas based on the settlement tendency characterization parameter, including If the settlement tendency characterization parameter is greater than or equal to the settlement tendency characterization parameter threshold, the label of the building area is set as the settlement tendency label; If the settlement tendency characterization parameter is less than the settlement tendency characterization parameter threshold, the label of the building area is set to a non-settlement tendency label.

4. The construction engineering quality monitoring system according to claim 1, characterized in that: The analytical modeler is used to perform modeling analysis on each of the building areas according to the settlement tendency category label corresponding to each of the building areas, including: If the label set in the building area is a settlement tendency label, three-dimensional modeling is performed on the buildings in the building area, and a surface feature analysis building quality representation value of the building model is obtained according to the modeled building model to determine whether the building corresponding to the building model meets the quality standard, and the template modeling model stored in the model memory is called for offset comparison to determine whether internal damage detection is required inside the building; If the tag set for the building area is a non-settlement tendency tag, the monitoring period of the characteristic monitor is adjusted according to the settlement tendency characterization parameter.

5. The construction engineering quality monitoring system according to claim 1, characterized in that: The process of obtaining the surface feature analytical building quality representation value of the building model according to the modeled building model by the analytical modeler includes: Using the ratio of the texture roughness of the building model to the texture roughness threshold as the first quality feature; The ratio of the surface crack width of the building model to the surface crack width threshold is used as the second quality feature; Used to determine the sum of the first quality feature and the second quality feature as a building quality characterization value.

6. The construction engineering quality monitoring system according to claim 1, characterized in that: The analytical modeler is used to determine whether the building corresponding to the building model meets the quality standards, including: If the building quality characterization value is less than the building quality characterization quality threshold, it is determined that the building corresponding to the building model meets the quality standards.

7. The construction engineering quality monitoring system according to claim 1, characterized in that: The process of the analytical modeler calling the template modeling model stored in the model memory for offset comparison includes: For placing the sample modeling model and the building model in the same spatial rectangular coordinate system and comparing them; Used to determine the degree of overlap between the building model and the sample building model.

8. The construction engineering quality monitoring system according to claim 1, characterized in that: The analytical modeler is used to determine whether internal damage detection is required inside the building, including: If the degree of overlap between the building model and the sample building model is greater than or equal to the overlap threshold, it is determined that internal damage detection is required inside the building.

9. The construction engineering quality monitoring system according to claim 1, characterized in that: The analytical modeler is used to adjust the monitoring period of the characteristic monitor according to the sedimentation tendency characterization parameter, including: The monitoring period of the characteristic monitor is shortened, and the shortening amount of the monitoring period is negatively correlated with the parameter characterizing the sedimentation tendency.

10. The construction engineering quality monitoring system according to claim 1, characterized in that: Each of the building areas needs to be equipped with at least one vibration acquisition unit, an image acquisition unit and a scanning unit.

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