A kind of automatic detection system and method of foundation bearing capacity

Abstract

The present invention relates to the technical field of foundation bearing capacity detection, and discloses an automatic detection system and method for foundation bearing capacity, including: a foundation scanning module, a foundation detection point selection module, an automatic detection operation module, a data acquisition unit, a data transmission module, a data processing and analysis module, and a detection result display module; the foundation scanning module is used to scan the foundation area, so that the image of the entire foundation can be obtained. Compared with the traditional foundation bearing capacity detection method, the system can automatically detect the foundation bearing capacity, with less human intervention, and can reduce the situation where the foundation bearing capacity is inaccurate due to human operation deviation. In addition, when measuring the foundation bearing capacity, considering the influence of soil porosity on the foundation bearing capacity caused by soil moisture, after obtaining the foundation bearing capacity, the foundation bearing capacity data is corrected again according to the soil porosity, so that the foundation bearing capacity can be detected more accurately.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation bearing capacity detection, and more specifically discloses an automatic detection system and method for foundation bearing capacity. Background Art

[0002] The foundation refers to the part of the soil that bears the load of the superstructure. The soil or rock mass under the foundation that bears the entire load of the building is called the foundation. The foundation is not a component of the building, but it plays a very important role in ensuring the firmness and durability of the building. When the bearing capacity of the foundation is less than the pressure exerted by the building on it, the foundation will settle, causing the building above it to tilt, the wall cracks to affect the overall stability of the building, and even cause the building to collapse. Therefore, in order to ensure that the building on the foundation can be firmly supported on the foundation for a long time, the bearing capacity of the foundation is usually tested. Generally, dynamic penetration tests, static load tests, drilling sampling tests and other methods are used to test the bearing capacity of the foundation. However, in the current foundation bearing capacity detection method, in the process of testing the foundation bearing capacity, the specific operations and the query and detection of the bearing capacity are basically performed by operators, and human intervention is relatively large, which leads to deviations in the test results. Moreover, since the current foundation bearing capacity detection method requires manual operation at every step in the process of detecting the foundation bearing capacity, it not only increases the workload of the operators, but also leads to a large manual input in the foundation bearing capacity detection, indirectly increasing the cost of the foundation bearing capacity detection. Summary of the invention

[0003] The present invention mainly provides a system and method for automatic detection of foundation bearing capacity, which can solve the problem that current foundation bearing capacity detection methods are prone to much human intervention and easily lead to deviations in detection results.

[0004] To solve the above technical problems, according to one aspect of the present invention, more specifically, a foundation bearing capacity automatic detection system is provided, comprising: a foundation scanning module, a foundation detection point selection module, an automatic detection operation module, a data acquisition unit, a data transmission module, a data processing and analysis module, and a detection result display module; wherein:

[0005] Foundation scanning module: used to scan the foundation area, so as to obtain the image of the entire foundation;

[0006] Ground detection point selection module: used to automatically mark and select several detection points in the ground image according to the ground image obtained by the ground scanning module;

[0007] Automatic detection operation module: used to be arranged on several detection points marked and selected by the foundation monitoring point selection module, and automatically perform detection operations;

[0008] Data collection unit: used for data collection operation, including operation data collection module and soil sample data collection module; the operation data collection module is used for collecting the initial drop height of the drop hammer in the automatic detection operation module, the distance increment of the drop hammer in the vertical direction, the weight data of the drop hammer, and the total number of hammer blows after the depression depth of the detection point reaches the specified depth; the soil sample data collection module is used for collecting the moisture content, weight and volume data of several soil samples;

[0009] Data transmission module: used to transmit the information data collected by the data acquisition unit, and transmit the information data collected by the data acquisition unit to the data processing and analysis module;

[0010] Data processing and analysis module: used to receive the information data transmitted by the data transmission module, and process and analyze the received information data to obtain the processing and analysis results, and send the obtained processing and analysis results to the detection result display module;

[0011] Test result display module: used to display the test results sent by the data processing and analysis module for on-site management personnel to view.

[0012] Furthermore, when marking and selecting a plurality of foundation detection points, the foundation detection point selection module first obtains the bird's-eye view image of the foundation obtained by the foundation scanning module, obtains the actual length and width of the foundation according to the scaling ratio, and then selects a plurality of detection points in the length and width directions of the foundation at the following intervals: ;

[0013] Where G is the sampling point interval, GCD(x,y) is the greatest common divisor of the two values ​​of x and y, floor(z) is the positive integer closest to z, L and D are the length and width of the foundation respectively, and C is a preset variable. .

[0014] Furthermore, the automatic detection operation module includes: an electromagnetic module, a drop hammer module, a sensing module and a lifting module;

[0015] Electromagnetic module: used to generate magnetic force when powered on, so as to adsorb and fix the drop hammer module in the initial position; and used to release the drop hammer when the magnetic force is reduced when the power is off;

[0016] Drop hammer module: used to drop to the ground from the initial position after the electromagnetic module is powered off, thereby hammering the horizontal surface of the foundation;

[0017] Sensing module: used to sense the position of the drop hammer module in real time;

[0018] Lifting module: used to lift the drop hammer module to its initial position after the drop hammer hits the foundation level.

[0019] Furthermore, the operation data collection module includes: an initial drop height collection module, a drop hammer vertical distance increment collection module and a drop hammer weight collection module;

[0020] Initial height acquisition module: used to acquire the distance between the drop hammer module in the automatic detection operation module and the horizontal plane of the foundation when it is in the initial position;

[0021] Drop hammer vertical distance increment collection module: used to collect the distance between the contact surface between the drop hammer module and the foundation to the horizontal surface of the foundation each time the drop hammer module falls and hits the horizontal surface of the foundation;

[0022] Drop weight collection module: used to collect the overall weight of the drop weight module.

[0023] Furthermore, the soil sample data collection module includes: a soil sample moisture content collection module, a soil sample weight collection module and a soil sample volume collection module;

[0024] Soil sample moisture content collection module: used to collect moisture content information data of several soil samples of the foundation;

[0025] Soil sample weight collection module: used to collect weight information data of several soil samples of the foundation;

[0026] Soil sample volume collection module: used to collect volume information data of several soil samples of the foundation.

[0027] Furthermore, the data processing and analysis module includes: a data receiving and caching module, an analysis and detection module, and a result sending module;

[0028] Data receiving and caching module: used to receive and cache the information data collected by the data collection unit;

[0029] Analysis and detection module: used to process and analyze the information data received and cached by the data receiving and caching module, so as to obtain the processing and analysis results, that is, the bearing capacity of the foundation;

[0030] Result sending module: used to send the foundation bearing capacity information data analyzed and detected by the analysis and detection module to the detection result display module.

[0031] Furthermore, when the analysis and detection module detects and analyzes the foundation bearing capacity, it first obtains the comprehensive bearing capacity of the foundation based on the initial drop height of the drop hammer at each detection point, the vertical distance increment of the drop hammer, the weight data of the drop hammer, and the total number of hammer blows after the depression depth of the detection point reaches the specified depth collected by the data acquisition unit: ;

[0032] Among them, F is the comprehensive bearing capacity of the foundation, m is the weight of the drop hammer module at each detection point k, g is the gravity deceleration, and h is the initial drop height of the drop hammer module at each detection point k. is the increment of the drop hammer module in the vertical direction after each hammer strike i at each detection point k, that is, the distance between the hammer strike contact surface and the horizontal plane of the foundation, A is the area of ​​the hammer strike contact surface of the drop hammer module, N is the total number of hammer strikes after the depression depth of each detection point k reaches the specified depth, and S is the total number of detection points;

[0033] Then, based on the moisture content, weight and volume data of each soil sample collected by the data acquisition unit, the comprehensive porosity of the foundation is obtained: ;

[0034] in, is the comprehensive porosity of the foundation, V is the total volume of each soil sample j, The total weight of each soil sample j, is the moisture content of each soil sample j, is the density of each soil sample j, and Z is the total number of soil samples;

[0035] Finally, the comprehensive bearing capacity of the foundation is corrected, and the corrected foundation bearing capacity is: ;

[0036] in, The bearing capacity of the foundation.

[0037] Furthermore, the system also includes an authorization access module for authorizing a third-party terminal device or system through the network, so that the third-party terminal device or system can obtain the foundation bearing capacity result information data fed back by the data processing and analysis module from the detection result presentation module.

[0038] According to another aspect of the present invention, a method for automatic detection of foundation bearing capacity is provided. The method is based on the above automatic detection system for foundation bearing capacity and specifically comprises the following steps:

[0039] S1. Randomly sample several soil samples from the foundation area, and measure several soil samples, so as to upload and save the moisture content, weight, volume and soil density of each soil sample;

[0040] S2. Scan the foundation area to obtain a bird's-eye view image of the entire foundation, and automatically mark and select several detection points on the foundation image;

[0041] S3, arranging automatic detection operation modules on a number of marked and selected detection points, and automatically performing a detection operation of hammering the foundation surface;

[0042] S4, collecting the initial height of the hammer drop, the weight of the hammer drop, the vertical increment of the hammer drop, and the number of hammer strikes after the depression of the test point reaches a specified depth at each test point, and collecting the moisture content, weight, and volume of each soil sample;

[0043] S5. Process and analyze the information data collected in step S4 to obtain the bearing capacity of the foundation, and send the foundation bearing capacity result to the management terminal device or the detection device for display.

[0044] The beneficial effects of the automatic detection system and method of foundation bearing capacity of the present invention are as follows: first, a plurality of soil samples are randomly taken in the foundation area, and each soil sample is measured, and the water content, weight, volume and other data of each soil sample are uploaded and saved for system acquisition. Then, automatic detection operation equipment is arranged on the multiple detection points automatically marked and selected in the foundation area, so as to automatically perform detection operations on each detection point, and at the same time, the initial height of the drop hammer, the drop hammer weight, the vertical increment of the drop hammer and the number of hammer strikes after the detection point is depressed to a specified depth are collected at each detection point. Then, the bearing capacity of the foundation is obtained based on the collected soil sample data and operation data. Compared with the traditional foundation bearing capacity detection method, this system can automatically detect the foundation bearing capacity with less human intervention, and can reduce the situation where the foundation bearing capacity is inaccurate due to human operation deviation. In addition, when measuring the bearing capacity of the foundation, the influence of soil porosity caused by soil moisture on the foundation bearing capacity is taken into consideration. After obtaining the bearing capacity of the foundation, the foundation bearing capacity data is corrected again according to the soil porosity, so that the bearing capacity of the foundation can be detected more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0046] Figure 1 The schematic diagram of the system principle is shown in Figure 2.

[0047] Figure 2 A schematic diagram of the method flow chart. DETAILED DESCRIPTION

[0048] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0049] According to one aspect of the present invention, Figure 1-2As shown, a foundation bearing capacity automatic detection system and method are provided. First, several soil samples are randomly taken from the foundation area, and the moisture content, weight, volume, density and other data of each soil sample are measured, and the measured soil sample data are uploaded and saved for the system to collect and obtain in the subsequent detection process. Then, a bird's-eye view image of the entire foundation area is scanned and obtained through the foundation scanning module (specifically, a bird's-eye view image of the entire foundation area can be obtained through remote sensing technology and drone technology), and then the actual length and width of the foundation are obtained by the foundation detection point selection module according to the scaling ratio of the bird's-eye view image and the actual foundation area, and then several detection points are taken in the length and width directions of the foundation according to the following intervals: ;

[0050] Where G is the sampling point interval, GCD(x,y) is the greatest common divisor of the two values ​​of x and y, floor(z) is the positive integer closest to z, L and D are the length and width of the foundation respectively, and C is a preset variable. .

[0051] After obtaining several detection points, the automatic detection operation unit is arranged one by one on the several detection points. The automatic detection operation unit can be specifically set as a guide column, a drop hammer module sleeved on the guide column, the drop hammer module is specifically a cylindrical structure, a plurality of Hall sensors arranged in the guide column and an induction module composed of a magnetic ring arranged at the bottom of the drop hammer module, an electromagnetic module arranged at the initial position inside the guide column, and a lifting module arranged on the guide column, the lifting module is specifically a motor installed on the guide column, a lifting rope wound at the power output end of the motor, and one end of the rope is fixedly connected to the drop hammer module. Then the electromagnetic module on the automatic detection operation unit is powered off and the drop hammer module is released, causing the drop hammer module to perform free fall motion. Eventually, the drop hammer module will hit the foundation surface, and the sensing module will sense the vertical position of the drop hammer module in real time, thereby obtaining the distance between the hammer contact surface of the drop hammer module and the horizontal plane of the foundation, that is, the vertical increment of the drop hammer module in the vertical direction. Then the lifting module will lift the drop hammer module to the initial position again, and at the same time, the electromagnetic module will be energized and the drop hammer module will be adsorbed and fixed in the initial position. Then the electromagnetic module will be powered off again to release the drop hammer module, and the cycle will be repeated until the depression depth of the detection point reaches the specified depth and the detection operation is stopped.

[0052] At the same time, the operation data collection module collects the initial drop height of the drop hammer module during the detection point detection operation, the vertical increment after the drop hammer module hits the foundation horizontal surface each time, and the weight of the drop hammer module through the initial drop height collection module, the drop hammer vertical distance increment collection module, and the drop hammer weight collection module. The soil sample data collection module collects the moisture content, weight, and volume of each soil sample through the soil sample moisture content collection module, the soil sample weight collection module, and the soil sample volume collection module. The above collected information data is transmitted to the data processing and analysis module through the wireless transmission module for processing and analysis.

[0053] The data receiving and caching module in the data processing and analysis module receives and caches the information data transmitted by the wireless transmission module, and then performs detection and analysis on the foundation bearing capacity through the analysis and detection module. The following three steps are performed during the analysis and detection:

[0054] 1. According to the initial drop height of the drop hammer at each detection point collected by the data acquisition unit, the vertical distance increment of the drop hammer, the weight data of the drop hammer, and the total number of hammer blows after the depression depth of the detection point reaches the specified depth, the comprehensive bearing capacity of the foundation is obtained: ;

[0055] Among them, F is the comprehensive bearing capacity of the foundation, m is the weight of the drop hammer module at each detection point k, g is the gravity deceleration, and h is the initial drop height of the drop hammer module at each detection point k. where: N is the vertical increment of the drop hammer module after each hammer strike i at each detection point k, that is, the distance between the hammer contact surface and the horizontal plane of the foundation; A is the area of ​​the hammer contact surface of the drop hammer module; N is the total number of hammer strikes after the depression depth of each detection point k reaches the specified depth; and S is the total number of detection points.

[0056] 2. According to the moisture content, weight and volume data of each soil sample collected by the data acquisition unit, the comprehensive porosity of the foundation is obtained: ;

[0057] in, is the comprehensive porosity of the foundation, V is the total volume of each soil sample j, The total weight of each soil sample j, is the moisture content of each soil sample j, is the density of each soil sample j, and Z is the total number of soil samples.

[0058] 3. Correct the comprehensive bearing capacity of the foundation. The corrected bearing capacity of the foundation is: ;

[0059] in, The bearing capacity of the foundation.

[0060] Finally, the obtained foundation bearing capacity result data is sent to the test result display module through the result sending module, so that it can be displayed on the monitoring terminal device for management personnel to view.

[0061] In addition, third-party terminal devices or systems can be authorized through the authorization access module, so that they can be connected to this system, and then the foundation bearing capacity result information data fed back by the data processing and analysis module can be obtained from the test result presentation module.

[0062] The electrical components that appear in this article are all electrical components that exist in reality.

[0063] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention also fall within the protection scope of the present invention.

Claims

1. An automatic detection system for foundation bearing capacity, characterized in that: include: Foundation scanning module, foundation detection point selection module, automatic detection operation module, data acquisition unit, data transmission module, data processing and analysis module and detection result display module; among which: Foundation scanning module: used to scan the foundation area, so as to obtain the image of the entire foundation; Ground detection point selection module: used to automatically mark and select several detection points in the ground image according to the ground image obtained by the ground scanning module; Automatic detection operation module: used to be arranged on several detection points marked and selected by the foundation monitoring point selection module, and automatically perform detection operations; Data collection unit: used for data collection operation, including operation data collection module and soil sample data collection module; the operation data collection module is used for collecting the initial drop height of the drop hammer in the automatic detection operation module, the distance increment of the drop hammer in the vertical direction, the weight data of the drop hammer, and the total number of hammer blows after the depression depth of the detection point reaches the specified depth; the soil sample data collection module is used for collecting the moisture content, weight and volume data of several soil samples; Data transmission module: used to transmit the information data collected by the data acquisition unit, and transmit the information data collected by the data acquisition unit to the data processing and analysis module; Data processing and analysis module: used to receive the information data transmitted by the data transmission module, and process and analyze the received information data to obtain the processing and analysis results, and send the obtained processing and analysis results to the detection result display module; this module includes: data receiving and caching module, analysis and detection module and result sending module; data receiving and caching module: used to receive and cache the information data collected by the data acquisition unit; analysis and detection module: used to process and analyze the information data received and cached by the data receiving and caching module, so as to obtain the processing and analysis results, that is, the bearing capacity of the foundation, specifically: firstly, according to the initial drop height of the drop hammer at each detection point collected by the data acquisition unit, the distance increment of the drop hammer in the vertical direction, the weight data of the drop hammer and the total number of hammer blows after the depression depth of the detection point reaches the specified depth, the comprehensive bearing capacity of the foundation is obtained: Among them, F is the comprehensive bearing capacity of the foundation, m is the weight of the drop hammer module at each detection point k, g is the gravity deceleration, and h is the initial drop height of the drop hammer module at each detection point k. is the increment of the drop hammer module in the vertical direction after each hammer strike i at each detection point k, that is, the distance between the hammer strike contact surface and the horizontal plane of the foundation, A is the area of ​​the hammer strike contact surface of the drop hammer module, N is the total number of hammer strikes after the depression depth of each detection point k reaches the specified depth, and S is the total number of detection points; Then, based on the moisture content, weight and volume data of each soil sample collected by the data acquisition unit, the comprehensive porosity of the foundation is obtained: in, is the comprehensive porosity of the foundation, V is the total volume of each soil sample j, The total weight of each soil sample j, is the moisture content of each soil sample j, is the density of each soil sample j, and Z is the total number of soil samples; Finally, the comprehensive bearing capacity of the foundation is corrected, and the corrected foundation bearing capacity is: in, The result sending module is used to send the foundation bearing capacity information data analyzed and detected by the analysis and detection module to the detection result display module; Test result display module: used to display the test results sent by the data processing and analysis module for on-site management personnel to view.

2. The automatic detection system for foundation bearing capacity according to claim 1 is characterized in that: When marking and selecting a plurality of foundation detection points, the foundation detection point selection module first obtains the bird's-eye view image of the foundation obtained by the foundation scanning module, obtains the actual length and width of the foundation according to the scaling ratio, and then selects a plurality of detection points in the length and width directions of the foundation at the following intervals: in, is the sampling point interval, GCD(x,y) is the greatest common divisor of the two values ​​of x and y, floor(z) is the positive integer closest to Z, L and D are the length and width of the foundation respectively, C is the preset variable, .

3. The automatic detection system for foundation bearing capacity according to claim 1 is characterized in that: The automatic detection operation module includes: an electromagnetic module, a drop hammer module, an induction module and a lifting module; Electromagnetic module: used to generate magnetic force when powered on, so as to adsorb and fix the drop hammer module in the initial position; and used to release the drop hammer when the magnetic force is reduced when the power is off; Drop hammer module: used to drop to the ground from the initial position after the electromagnetic module is powered off, thereby hammering the horizontal surface of the foundation; Sensing module: used to sense the position of the drop hammer module in real time; Lifting module: used to lift the drop hammer module to its initial position after the drop hammer hits the foundation level.

4. The automatic detection system for foundation bearing capacity according to claim 3 is characterized in that: The operation data collection module includes: an initial drop height collection module, a drop hammer vertical distance increment collection module and a drop hammer weight collection module; Initial height acquisition module: used to acquire the distance between the drop hammer module in the automatic detection operation module and the horizontal plane of the foundation when it is in the initial position; Drop hammer vertical distance increment collection module: used to collect the distance between the contact surface between the drop hammer module and the foundation to the horizontal surface of the foundation each time the drop hammer module falls and hits the horizontal surface of the foundation; Drop weight collection module: used to collect the overall weight of the drop weight module.

5. The automatic detection system for foundation bearing capacity according to claim 1 is characterized in that: The soil sample data collection module includes: a soil sample moisture content collection module, a soil sample weight collection module and a soil sample volume collection module; Soil sample moisture content collection module: used to collect moisture content information data of several soil samples of the foundation; Soil sample weight collection module: used to collect weight information data of several soil samples of the foundation; Soil sample volume collection module: used to collect volume information data of several soil samples of the foundation.

6. The automatic detection system for foundation bearing capacity according to claim 1 is characterized in that: The system also includes an authorization access module for authorizing a third-party terminal device or system through the network, so that the third-party terminal device or system can obtain the foundation bearing capacity result information data fed back by the data processing and analysis module from the detection result presentation module.

7. A method for automatically detecting the bearing capacity of a foundation, characterized in that: The method is implemented based on the automatic detection system for foundation bearing capacity according to any one of claims 1 to 6, and specifically comprises the following steps: S1. Randomly sample several soil samples from the foundation area, and measure several soil samples, so as to upload and save the moisture content, weight, volume and soil density of each soil sample; S2. Scan the foundation area to obtain a bird's-eye view of the entire foundation, and automatically mark and select several detection points on the foundation image; S3, arranging automatic detection operation modules on a number of marked and selected detection points, and automatically performing a detection operation of hammering the foundation surface; S4, collecting the initial height of the hammer drop, the weight of the hammer drop, the vertical increment of the hammer drop, and the number of hammer strikes after the depression of the test point reaches a specified depth at each test point, and collecting the moisture content, weight, and volume of each soil sample; S5. Process and analyze the information data collected in step S4 to obtain the bearing capacity of the foundation, and send the foundation bearing capacity result to the management terminal device or the detection device for display.

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