A method for risk assessment on construction site

Abstract

The invention discloses a method for risk assessment of a construction site, and relates to the technical field of construction safety assessment of construction projects. A data collection and preprocessing module is used to measure and collect the hardness and inclination of a foundation at different positions of the foundation, namely, the left side, the middle and the right side, respectively. The collected measurement data are normalized, and the average values ​​of the hardness and the inclination are output. Meanwhile, the average load-bearing capacity of the structure is measured, and the wind speed is recorded. A data assessment processing module is used to sequentially substitute the average values ​​of the hardness and the inclination, the average load-bearing capacity and the wind speed, and output a foundation stability assessment value JW, a structural safety assessment value AQ and a comprehensive risk assessment value ZFP. Based on the comprehensive risk assessment value ZFP, the risk level is judged, and corresponding risk management measures are formulated. The invention not only improves the accuracy and reliability of risk assessment, but also enhances the comprehensiveness and real-time nature of risk assessment, which is of great significance for ensuring the quality and safety of construction projects.

Description

Technical Field

[0001] The present invention relates to the technical field of building engineering construction safety assessment, and in particular to a building engineering on-site risk assessment method. Background Art

[0002] With the acceleration of urbanization and the vigorous development of the construction industry, the scale of construction projects is expanding and the structure is becoming more complex. These changes have put forward higher requirements on the quality and safety of construction projects. However, at the construction site, due to the complex and changeable construction environment, large number of personnel, and a wide variety of equipment, potential risk factors have also increased. Therefore, the construction site risk assessment method came into being and became an important means to ensure the quality and safety of the project. Among them, the foundation is the basis for supporting the entire structure. Its stability and structural safety are directly related to the overall quality and long-term safety of the project.

[0003] At present, the risk assessment methods for construction engineering sites have made significant progress. However, the existing technology usually only uses a single physical parameter for measurement at a certain location of the foundation. This measurement method ignores the complexity and heterogeneity of the foundation and cannot fully reflect the distribution of the physical properties of the foundation. At the same time, a single physical parameter cannot fully reflect the complex interaction between the foundation and the structure. After data collection, the existing technology often lacks effective normalization and standardization of the data. The dimensional differences and measurement errors between different measurement values ​​make it difficult to directly compare and calculate the data, thereby affecting the accuracy of risk assessment. Risk assessment formulas and models are often oversimplified and fail to fully consider the complex interactions between the hardness and inclination of the foundation and external environmental factors. This simplified assessment model cannot accurately reflect the actual situation, resulting in inaccurate and unreliable assessment results. In addition, in the risk assessment process, the existing technology often ignores the impact of wind speed, an external environmental factor, on the stability of the foundation. The wind speed will indirectly affect the safety of the project by affecting the physical properties of the foundation and the stress state of the structure. Summary of the invention

[0004] The purpose of the present invention is to provide a construction engineering site risk assessment method to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the present invention provides the following technical solution, and the specific evaluation steps are as follows:

[0006] Using the data collection and preprocessing module, the hardness and inclination data of the foundation are measured and collected at different positions of the foundation, namely the left side, the middle and the right side;

[0007] Normalize the collected measurement data and output the average values ​​of hardness and inclination. At the same time, measure the average load-bearing capacity of the structure and record the wind speed.

[0008] Using the data evaluation processing module, the average values ​​of hardness and inclination, average load-bearing capacity and wind speed are substituted in turn, and the foundation stability evaluation value JW, the structural safety evaluation value AQ and the comprehensive risk evaluation value ZFP are output;

[0009] Based on the comprehensive risk assessment value ZFP, determine the risk level and formulate corresponding risk management measures;

[0010] Any measurement data of the data collection and preprocessing module, the average values ​​of hardness and inclination, the average load-bearing capacity, wind speed, foundation stability assessment value JW, structural safety assessment value AQ and comprehensive risk assessment value ZFP are all stored in the storage unit in the data collection and preprocessing module;

[0011] The units substituted into the data evaluation processing module include a unit for evaluating the stability of the foundation, a unit for comprehensively evaluating the safety of the structure, and a unit for comprehensive risk evaluation of the construction site;

[0012] The equipment used in the data collection and preprocessing module and the data evaluation and processing module include a hardness tester, an inclinometer, an anemometer, a pressure sensor, a computer and special risk assessment software, a signal light system and a display device;

[0013] The hardness tester is used to measure the hardness of the foundation;

[0014] The inclinometer is used to measure the inclination of the foundation;

[0015] The anemometer is used to measure the wind speed at the site;

[0016] The pressure sensor is used to measure the average load-bearing capacity of the structure;

[0017] The computer and the special risk assessment software are used for data preprocessing and risk assessment calculation;

[0018] The signal light system and display device are used to display risk assessment signals and show the current risk level.

[0019] Optionally, the hardness of the left, middle and right sides of the foundation are set to Y1, Y2 and Y3 respectively;

[0020] The inclinations of the left side, the middle and the right side of the foundation are set to I1, I2 and I3 respectively;

[0021] First, the calculation formula for normalizing hardness and inclination is as follows:

[0022] Y - 1=[Y i-min(Y1, Y2, Y3)] / [max(Y1, Y2, Y3)-min(Y1, Y2, Y3)];

[0023] I - 1=[I i -min(I1,I2,I3)] / [max(I1,I2,I3)-min(I1,I2,I3)];

[0024] in:

[0025] Y - 1 is the relative hardness value, I - 1 is the relative inclination value;

[0026] Then, the average normalized stiffness and tilt are calculated as follows:

[0027] Y avg =Y - 1 / 3;

[0028] I avg =I - 1 / 3;

[0029] in:

[0030] Y avg is the average hardness value;

[0031] I avg The average slope value

[0032] Optionally, the calculation formula for evaluating the foundation stability unit is as follows:

[0033] ;

[0034] in:

[0035] JW is the basic stability assessment value;

[0036] a is the adjustment coefficient, which is used to adjust the average slope index I avg The impact on stability.

[0037] Optionally, the calculation formula for the comprehensive evaluation structural safety unit is as follows:

[0038] AQ=JW×(T / 200) 0.5 -0.1×(10×I avg ) 2 ;

[0039] in:

[0040] AQ is the structural safety assessment value;

[0041] T is the average bearing capacity value, which reflects the average bearing capacity of the left, middle and right parts of the foundation;

[0042] (T / 200) 0.5 Reflect the nonlinear effect of load-bearing capacity on structural safety assessment;

[0043] 0.1 and 10 are coefficients used to adjust the average slope index I avg The impact on the structural safety assessment, and 10 is the magnification factor, used to emphasize the average inclination index I avg Importance of structural safety assessment.

[0044] Optionally, the average inclination index I in the comprehensive assessment of structural safety unit avg The 10-fold magnification can significantly reduce the structural safety assessment value AQ when the inclination is large, thereby reflecting the potential threat of foundation inclination to structural safety.

[0045] Optionally, the calculation formula of the construction site comprehensive risk assessment unit is as follows:

[0046] ;

[0047] in:

[0048] ZFP is the comprehensive risk assessment value;

[0049] F is the external environment wind speed value;

[0050] Consider the square effect of wind speed to reflect the impact of wind speed on risk assessment;

[0051] 200×Y avg Reflects the potential impact of foundation hardness on wind resistance.

[0052] Optionally, the construction site comprehensive risk assessment unit performs an average hardness value Y avg The 200-fold magnification can make the foundation more resistant to wind when the hardness is high, thereby reducing the impact of wind on structural safety in the comprehensive risk assessment of the construction site.

[0053] Optionally, the signal light system and the display device display the risk assessment of the comprehensive risk assessment value ZFP result value in green, yellow, orange and red. The specific display assessment of the signal light system and the display device is as follows:

[0054] S1. If the signal light system and display device show green, it means that the safety of the structure is relatively high and should be monitored and maintained regularly;

[0055] S2. If the signal light system and display equipment show yellow, take preventive measures, including regular inspection and local reinforcement;

[0056] S3. If the signal light system and display equipment show orange, take immediate action to develop and implement a detailed ground reinforcement plan;

[0057] S4. If the signal light system and display device show red, it means that there is a serious safety hazard in the structure. It should be suspended and emergency reinforcement and other emergency measures should be taken.

[0058] Optionally, based on the display of the signal light system and the display device, and according to the specific results of the comprehensive risk assessment value ZFP, a decision is made whether to adjust the hardness or inclination of the foundation, or both of the above, and then the foundation stability assessment unit, the comprehensive structural safety assessment unit and the construction site comprehensive risk assessment unit will re-evaluate the foundation stability, structural safety and risk assessment in sequence.

[0059] Compared with the prior art, the present invention has the following beneficial effects:

[0060] 1. The present invention proposes to measure the hardness and inclination at different positions of the foundation respectively and calculate the average value to obtain a more accurate distribution map of the physical properties of the foundation, thereby more comprehensively reflecting the mechanical properties of the foundation and realizing a comprehensive and detailed measurement of the hardness and inclination of the foundation.

[0061] 2. After data collection, the present invention proposes to normalize the measured hardness and inclination data, and by eliminating the dimensional differences and measurement errors between different measurement values, different data can be directly compared and calculated, which helps to improve the accuracy and reliability of risk assessment.

[0062] 3. The present invention proposes to construct complex risk assessment models based on the normalized average hardness and inclination and external wind speed factors. These models can consider the interaction between multiple factors and their influence on foundation stability, so as to obtain more accurate risk assessment results.

[0063] 4. The present invention emphasizes the need to fully consider the impact of wind speed, an external environmental factor, on foundation stability. By introducing corresponding environmental factor monitoring equipment and data processing methods, it is possible to obtain changes in environmental factors in real time and incorporate them into the risk assessment model for calculation and analysis, which helps to improve the comprehensiveness and real-time nature of risk assessment. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 This is the method flow chart of the construction project site risk assessment method;

[0065] Figure 2 It is a schematic diagram of the process of normalizing the three-side measurements of foundation hardness and inclination according to the present invention.

[0066] Figure 3 It is a structural schematic diagram of the data evaluation processing module of the present invention;

[0067] Figure 4 It is a schematic diagram of the results of the risk assessment display and measures of the present invention. DETAILED DESCRIPTION

[0068] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0069] Regarding this construction project site risk assessment method, it is different from traditional risk assessment methods. Traditional risk assessment methods often rely on empirical judgment and simple parameter measurement, which is difficult to fully and accurately reflect the impact of foundation hardness and inclination on structural stability. In addition, existing methods often ignore the potential impact of external environmental factors on risk assessment, resulting in inaccurate and unreliable assessment results. The construction project site risk assessment method proposed in this algorithm unit effectively solves the problems and shortcomings of the existing technology by comprehensively refining parameter measurement, introducing standardized data processing, constructing complex assessment models, and comprehensively considering external environmental factors. This method not only improves the accuracy and reliability of risk assessment, but also enhances the comprehensiveness and real-time nature of risk assessment, which is of great significance for ensuring the quality and safety of construction projects.

[0070] For examples, see Figures 1 to 4 ,This implementation provides a construction project site risk assessment method, the specific assessment steps are as follows:

[0071] Using the data collection and preprocessing module, the hardness and inclination data of the foundation are measured and collected at different positions of the foundation, namely the left side, the middle and the right side;

[0072] The hardness of the left, middle and right sides of the foundation are set as Y1, Y2 and Y3 respectively;

[0073] The inclinations of the left, middle and right sides of the foundation are set as I1, I2 and I3 respectively;

[0074] Normalize the collected measurement data and output the average values ​​of hardness and inclination. At the same time, measure the average load-bearing capacity of the structure and record the wind speed.

[0075] First, the calculation formula for normalizing hardness and inclination is as follows:

[0076] Y - 1=[Y i -min(Y1, Y2, Y3)] / [max(Y1, Y2, Y3)-min(Y1, Y2, Y3)];

[0077] I - 1=[I i -min(I1,I2,I3)] / [max(I1,I2,I3)-min(I1,I2,I3)];

[0078] in:

[0079] Y - 1 is the relative hardness value, I - 1 is the relative inclination value;

[0080] Using the data evaluation processing module, the average values ​​of hardness and inclination, average load-bearing capacity and wind speed are substituted in turn, and the foundation stability evaluation value JW, the structural safety evaluation value AQ and the comprehensive risk evaluation value ZFP are output;

[0081] Then, the average normalized stiffness and tilt are calculated as follows:

[0082] Y avg =Y - 1 / 3;

[0083] I avg =I - 1 / 3;

[0084] in:

[0085] Y avg is the average hardness value;

[0086] I avg is the average inclination value;

[0087] Based on the comprehensive risk assessment value ZFP, determine the risk level and formulate corresponding risk management measures;

[0088] Any measurement data of the data collection and preprocessing module, the average values ​​of hardness and inclination, the average load-bearing capacity, wind speed, foundation stability assessment value JW, structural safety assessment value AQ and comprehensive risk assessment value ZFP are all stored in the storage unit in the data collection and preprocessing module;

[0089] The units that are substituted into the data evaluation processing module include the unit for evaluating the stability of the foundation, the unit for comprehensively evaluating the structural safety, and the unit for comprehensive risk evaluation of the construction site;

[0090] The equipment used in the data collection and preprocessing module and the data evaluation and processing module include hardness testers, inclinometers, anemometers, pressure sensors, computers and special risk assessment software, signal light systems and display equipment;

[0091] The hardness tester is used to measure the hardness of the foundation;

[0092] Inclinometers are used to measure the inclination of foundations;

[0093] Anemometers are used to measure wind speed at a site;

[0094] Pressure sensors are used to measure the average load-bearing capacity of the structure;

[0095] Computers and specialized risk assessment software are used for data preprocessing and risk assessment calculations;

[0096] Signal light systems and display devices are used to display risk assessment signals and show the current risk level.

[0097] In this embodiment, the system achieves the effects of comprehensive and detailed parameter measurement, introduction of standardized data processing, construction of complex evaluation models, and comprehensive consideration of external environmental factors through the mutual cooperation of three algorithm units. The three operation results of JW, AQ and ZFP are combined, which are interrelated and complementary to each other to form a complete risk assessment system. JW is the foundation stability assessment value, which is obtained by normalizing and averaging the hardness and inclination measured at different positions of the foundation, namely Y1, Y2 and Y3 and I1, I2 and I3, to obtain a quantitative index reflecting the overall stability of the foundation. This index comprehensively considers the two key factors of the hardness and inclination of the foundation, and can more accurately evaluate the foundation's ability to withstand the upper structure. Stability and safety under load, AQ is the structural safety assessment value, this indicator not only takes into account the stability of the foundation, but also takes into account the load-bearing capacity of the structure itself and the impact of the inclination on safety, so it can more comprehensively evaluate the safety of the structure, ZFP is the comprehensive risk assessment value, this indicator not only takes into account the safety of the structure itself and the stability of the foundation, but also takes into account the impact of external environmental factors on the risk, so it can more accurately evaluate the overall risk level of the construction site, and the calculation results of ZFP can also affect the feedback to the calculation of JW and AQ, so that the three algorithms of this system have a high correlation and entanglement, so that the overall algorithm system can perform automatic feedback and optimization according to the actual situation to be closer to reality.

[0098] See also Figures 1 to 4 , the calculation formula for evaluating the foundation stability unit is as follows:

[0099] ;

[0100] in:

[0101] JW is the basic stability assessment value;

[0102] a is the adjustment coefficient, which is used to adjust the average slope index I avg The degree of impact on stability.

[0103] In this embodiment, the algorithm unit can capture the local differences and overall trends of the physical properties of the foundation by measuring the hardness and inclination at different locations of the foundation, namely Y1, Y2 and Y3 as well as I1, I2 and I3. This multi-point measurement method can more comprehensively reflect the actual condition of the foundation than single-point measurement, and then the measured hardness and inclination data are normalized;

[0104] Y - 1=[Y i -min(Y1, Y2, Y3)] / [max(Y1, Y2, Y3)-min(Y1, Y2, Y3)];

[0105] I - 1=[I i -min(I1,I2,I3)] / [max(I1,I2,I3)-min(I1,I2,I3)];

[0106] This can eliminate the dimensional differences and measurement errors between different measurement values, allowing direct comparison and calculation between different data, thereby improving the accuracy of the assessment. The basic stability assessment value JW can be obtained by combining it with the adjustment coefficient a in this unit.

[0107] The heterogeneity of foundation is a common phenomenon in construction projects. Foundations in different locations show different physical properties due to geological conditions and construction processes, and thus the spatial changes in foundation hardness and inclination can be captured. The foundation stability assessment unit can accurately reflect the heterogeneity of the foundation through multi-point measurement and assessment, providing an important reference for subsequent engineering design and construction. The hardness and inclination of the foundation are key factors affecting the stability and safety of the building. Through multi-point measurement, the bearing capacity and anti-overturning capacity of the foundation can be more accurately assessed, and the risk level of the building under different conditions can be more accurately predicted. This refined risk assessment method helps engineers and decision makers make more scientific and reasonable decisions.

[0108] The normalized hardness and inclination data have a unified dimension and range, which makes them easier to combine and calculate with other parameters. In the subsequent comprehensive assessment of structural safety units and construction site comprehensive risk assessment units, these processed data can be used as important input parameters, making the assessment process more scientific and reasonable.

[0109] See also Figures 1 to 4 , the calculation formula for the comprehensive evaluation of the structural safety unit is as follows:

[0110] AQ=JW×(T / 200) 0.5 -0.1×(10×I avg ) 2 ;

[0111] in:

[0112] AQ is the structural safety assessment value;

[0113] T is the average bearing capacity value, which reflects the average bearing capacity of the left, middle and right parts of the foundation;

[0114] (T / 200) 0.5 Reflect the nonlinear effect of load-bearing capacity on structural safety assessment;

[0115] 0.1 and 10 are coefficients used to adjust the average slope index I avg The impact on the structural safety assessment, and 10 is the magnification factor, used to emphasize the average inclination index I avg The importance of structural safety assessment;

[0116] Comprehensive evaluation of structural safety unit for the average inclination index I avg The 10-fold magnification can significantly reduce the structural safety assessment value AQ when the inclination is large, thereby reflecting the potential threat of foundation inclination to structural safety.

[0117] In this embodiment, firstly, the inclination is an important indicator of foundation stability, which directly affects the safety and durability of the structure. By magnifying the influence of the inclination in the comprehensive evaluation of structural safety unit, the potential threat of foundation inclination to structural safety can be more significantly reflected, thereby reminding engineers and decision makers to pay attention and take corresponding reinforcement and repair measures. In risk assessment, it is very important to accurately identify and quantify key risk factors. By magnifying the influence of the inclination, the comprehensive evaluation of structural safety unit can more accurately reflect the contribution of foundation inclination to the structural safety assessment value, and improve the accuracy and reliability of the overall assessment. The purpose of risk assessment is to provide a basis for risk management decisions. By emphasizing the importance of inclination, the comprehensive evaluation of structural safety unit can guide decision makers to pay more attention to the foundation inclination problem and formulate targeted risk management strategies to reduce structural safety risks. It is worth noting that the average inclination index I avg It also needs to be set according to the actual situation;

[0118] This algorithm unit not only considers the foundation stability evaluation value JW obtained by the foundation stability evaluation unit, but also combines the average load-bearing capacity value T of the structure. This method of comprehensively considering multiple factors can more comprehensively reflect the safety of the structure and avoid the one-sidedness and error that may be caused by a single factor evaluation;

[0119] The foundation stability and structural load-bearing capacity are converted into specific values ​​through mathematical formulas, so that risks can be quantified and compared. This method of quantifying risks helps engineers understand the safety status of the structure more intuitively and formulate corresponding safety measures and emergency plans accordingly.

[0120] The evaluation results of the structural safety assessment value AQ can provide feedback and guidance for structural design. If deficiencies and potential risks are found in the safety of the structure, engineers can optimize and adjust the structural design based on the evaluation results to reduce risks and improve the safety of the structure.

[0121] See also Figures 1 to 4 , the calculation formula of the comprehensive risk assessment unit of the construction site is as follows:

[0122] ;

[0123] in:

[0124] ZFP is the comprehensive risk assessment value;

[0125] F is the external environment wind speed value;

[0126] Consider the square effect of wind speed to reflect the impact of wind speed on risk assessment;

[0127] 200×Y avg Reflects the potential impact of foundation hardness on wind resistance;

[0128] The average hardness value Y of the construction site comprehensive risk assessment unit avg The 200-fold magnification can make the foundation more resistant to wind when the hardness is high, thereby reducing the impact of wind on structural safety in the comprehensive risk assessment of the construction site.

[0129] In this embodiment, the algorithm unit first considers the impact of wind on structural safety. In the construction site comprehensive risk assessment unit, the hardness is amplified to adjust the impact of foundation hardness on wind resistance. This is because the impact of wind on the structure is not only related to the wind speed, but also closely related to the stability of the foundation. By amplifying the impact of hardness, the stability of the foundation under wind can be more accurately assessed, providing a scientific basis for wind-resistant design.

[0130] The design of the comprehensive risk assessment unit for construction sites is of great significance in guiding engineering practice. By understanding the influence of foundation hardness on wind resistance, engineers can take corresponding measures to improve the wind resistance of the structure during the design and construction process, such as optimizing the structural design and selecting high-strength materials to ensure the safety and stability of the structure under wind.

[0131] This algorithm unit introduces real-time monitoring and evaluation of the external environmental wind speed value F. This real-time evaluation can timely discover the impact of changes in external environmental factors on the safety of construction projects, and take corresponding measures to adjust and optimize. This real-time evaluation is of great significance to improving the safety of construction projects.

[0132] By quantifying the impact of external environmental factors such as wind speed on risk, the comprehensive risk assessment unit of the construction site can more accurately assess the safety of construction projects under extreme weather conditions, which helps engineers take measures in advance to enhance the wind resistance and earthquake resistance of the structure, thereby reducing the risks caused by changes in the external environment;

[0133] Based on the results of the comprehensive risk assessment value ZFP, engineers can reasonably allocate resources and give priority to high-risk areas and links. This optimization of resource allocation not only helps to improve the safety of the overall project, but also reduces project costs and improves economic benefits.

[0134] See also Figures 1 to 4 The risk assessment display of the comprehensive risk assessment value ZFP result value by the signal light system and display equipment is divided into green, yellow, orange and red. The specific display evaluation of the signal light system and display equipment is as follows:

[0135] S1. If the signal light system and display device show green, it means that the safety of the structure is relatively high and should be monitored and maintained regularly;

[0136] S2. If the signal light system and display equipment show yellow, take preventive measures, including regular inspection and local reinforcement;

[0137] S3. If the signal light system and display equipment show orange, take immediate action to develop and implement a detailed ground reinforcement plan;

[0138] S4. If the signal light system and display device show red, it indicates that there is a serious safety hazard in the structure and it should be suspended and urgently reinforced and other emergency measures should be taken;

[0139] Based on the display of the signal light system and the display device, and according to the specific results of the comprehensive risk assessment value ZFP, it is decided whether to adjust the hardness or inclination of the foundation, or both of the above. Then, the foundation stability assessment unit, the comprehensive structural safety assessment unit and the construction site comprehensive risk assessment unit will re-evaluate the foundation stability, structural safety and risk assessment in sequence.

[0140] In this embodiment, the algorithm unit is based on a signal light system to which the system is connected. The system includes a plurality of signal lights of different colors, namely green, yellow, orange and red, each color representing a different risk level. In addition, a display device is provided to display the specific value of the comprehensive risk assessment value ZFP and the text description of the risk level, so that the operator can have a more comprehensive understanding of the assessment results. It should be noted that the specific implementation of this risk assessment management system and display device will vary depending on different application scenarios and requirements. Therefore, in actual applications, it is necessary to customize and develop according to specific circumstances.

[0141] After determining the risk level based on the flashing of the signal light system, it is necessary to decide whether to adjust the hardness or inclination of the foundation, or both, based on the specific results of the risk assessment. The professional engineering model and calculation method of the data evaluation processing module are used to quantitatively analyze the hardness and inclination of the foundation to determine which factors are the main factors causing the risk. Based on the results of the quantitative analysis, targeted reinforcement measures are formulated. For example, if the inclination is the main problem, grouting reinforcement and additional support structure measures need to be taken; if the hardness is insufficient, soil improvement and replacement are required. After the reinforcement measures are implemented, the foundation stability assessment value JW and the structural safety assessment value AQ need to be evaluated again to verify the reinforcement effect and adjust the reinforcement plan according to the new assessment results;

[0142] When the comprehensive risk assessment value ZFP finds that there is a high risk of foundation stability, this information will be fed back to the foundation stability assessment unit. Engineers can adjust and optimize the foundation design and reinforcement measures based on this feedback result to improve the stability of the foundation. This feedback adjustment mechanism helps to ensure that the stability of the foundation is always maintained at an acceptable level;

[0143] The cyclical influence of the construction site comprehensive risk assessment unit on the foundation stability assessment unit is also reflected in the iterative optimization process of risk assessment. By continuously conducting foundation stability assessment, structural safety assessment and comprehensive risk assessment, and adjusting and optimizing according to the assessment results, the overall risk level of the construction project can be gradually reduced. This iterative optimization process helps to ensure that the construction project always maintains a high level of safety and stability during the design, construction and use process.

[0144] The cyclical influence of the construction site comprehensive risk assessment unit on the foundation stability assessment unit will ultimately improve the overall safety of the construction project. By comprehensively considering the factors of foundation stability, structural safety and external environmental factors, and taking corresponding measures to adjust and optimize, it can significantly reduce the risks and hidden dangers that may be encountered in the design and construction process of the construction project, which will help improve the overall quality and safety level of the construction project.

[0145] To sum up, in the specific implementation process, corresponding reinforcement measures are formulated according to the impact of different risk levels, and when adjusting the hardness and inclination of the foundation, targeted reinforcement is carried out based on quantitative analysis results and feedback mechanisms to ensure that the numerical basis used is accurate and reliable.

[0146] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A construction site risk assessment method, characterized in that: The specific evaluation steps are as follows: Using the data collection and preprocessing module, the hardness and inclination data of the foundation are measured and collected at the left, middle and right sides of the foundation respectively; Normalize the collected measurement data and output the average values ​​of hardness and inclination. At the same time, measure the average load-bearing capacity of the structure and record the wind speed. Using the data evaluation processing module, the average values ​​of hardness and inclination, average load-bearing capacity and wind speed are substituted in sequence, and the foundation stability evaluation value JW, the structural safety evaluation value AQ and the comprehensive risk evaluation value ZFP are output; Based on the comprehensive risk assessment value ZFP, determine the risk level and formulate corresponding risk management measures; Any measurement data of the data collection and preprocessing module, the average values ​​of hardness and inclination, the average load-bearing capacity, wind speed, foundation stability assessment value JW, structural safety assessment value AQ and comprehensive risk assessment value ZFP are all stored in the storage unit in the data collection and preprocessing module; The units substituted into the data evaluation processing module include a unit for evaluating the stability of the foundation, a unit for comprehensively evaluating the safety of the structure, and a unit for comprehensive risk evaluation of the construction site; The hardness of the left, middle and right sides of the foundation are set to Y1, Y2 and Y3 respectively; The inclinations of the left side, the middle and the right side of the foundation are set to I1, I2 and I3 respectively; First, the calculation formula for normalizing hardness and inclination is as follows: <h2 style=";text-align:left;direction:ltr">Y<h2 style=";text-align:left;direction:ltr"> - <h2 style=";text-align:left;direction:ltr"> 1=[Y<h2 style=";text-align:left;direction:ltr"> i <h2 style=";text-align:left;direction:ltr"> -min(Y1,Y2,Y3) / [max(Y1,Y2,Y3)-min(Y1,Y2,Y3)]; I - 1=[I i -min (I1, I2, I3)] / [max (I1, I2, I3)-min (I1, I2, I3)]; in: Y - 1 is the relative hardness value, I - 1 is the relative inclination value; Then, the average normalized stiffness and tilt are calculated as follows: AND avg =And - 1 / 3; I avg =I - 1 / 3; in: Y avg is the average hardness value; I avg is the average slope value; The calculation formula for evaluating the foundation stability unit is as follows: ； in: a is the adjustment coefficient, which is used to adjust the average slope index I avg The degree of impact on stability; The calculation formula for the comprehensive assessment structural safety unit is as follows: AQ=JW×(T / 200) 0.5 -0.1×(10×I avg ) 2 ; in: AQ is the structural safety assessment value; T is the average bearing capacity value, which reflects the average bearing capacity of the left, middle and right parts of the foundation; The calculation formula of the construction site comprehensive risk assessment unit is as follows: ； in: ZFP is the comprehensive risk assessment value; F is the external environment wind speed value; According to the results of the comprehensive risk assessment value ZFP, engineers can reasonably allocate resources and give priority to high-risk areas and links; The risk assessment display of the comprehensive risk assessment value ZFP result value by the signal light system and display device is divided into green, yellow, orange and red. The specific display assessment of the signal light system and display device is as follows: If the signal light system and display equipment show green, it means that the safety of the structure is relatively high and should be monitored and maintained regularly; If the signal light system and display equipment show yellow, take preventive measures, including regular inspection and local reinforcement; If the signal light system and display equipment show orange, take immediate action to develop and implement a detailed ground reinforcement plan; If the signal light system and display equipment show red, it means that there is a serious safety hazard in the structure and it should be suspended and emergency reinforcement and other emergency measures should be taken.

2. A construction engineering site risk assessment method according to claim 1, characterized in that: The unit for comprehensively evaluating the structural safety is used to evaluate the average inclination index I avg The 10-fold magnification can significantly reduce the structural safety assessment value AQ when the inclination is large, thereby reflecting the potential threat of foundation inclination to structural safety.

3. A construction engineering site risk assessment method according to claim 2, characterized in that: The construction site comprehensive risk assessment unit is used to evaluate the average hardness value Y avg The magnification is 200 times greater to make the foundation more resistant to wind when the hardness is high, thereby reducing the impact of wind on structural safety in the comprehensive risk assessment of the construction site.

4. A construction engineering site risk assessment method according to claim 3, characterized in that: Based on the display of the signal light system and the display device, and according to the specific results of the comprehensive risk assessment value ZFP, a decision is made to adjust the hardness of the foundation and / or the inclination of the foundation, and then the foundation stability assessment unit, the comprehensive structural safety assessment unit and the construction site comprehensive risk assessment unit will re-evaluate the foundation stability, structural safety and risk assessment in sequence.

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