Control system and method for deep foundation pit deformation based on green and environmentally friendly principles

Abstract

This invention relates to the field of deep foundation pit construction technology, and particularly to a control system and method for deep foundation pit deformation based on green and environmentally friendly principles. The method includes: acquiring geological survey data and environmental data of the area to be constructed in the deep foundation pit; constructing an integrated geometric model of the deep foundation pit construction area; determining whether the green and environmentally friendly performance of the support structure used in the deep foundation pit meets the standards based on the recycled material replacement rate, and adjusting the proportion of recycled materials incorporated into the support structure according to the ratio; determining whether the deformation of the deep foundation pit after simulated support construction is within a reasonable range based on the deep foundation pit deformation deviation rate, and adjusting the support structure parameters according to the relative difference; determining whether the impact of the deep foundation pit construction process on the surrounding environment meets the standards based on the deep foundation pit construction disturbance index, and optimizing the support inclination angle after adjusting the support structure parameters according to the difference. This invention improves the accuracy of deep foundation pit deformation control.

Description

Technical Field

[0001] This invention relates to the field of deep foundation pit construction technology, and in particular to a control system and method for deep foundation pit deformation based on green and environmentally friendly principles. Background Technology

[0002] Deep foundation pit engineering is a crucial aspect of urban construction. Its deformation control directly affects the safety of surrounding buildings, underground pipelines, and the construction itself. Traditional foundation pit support and deformation control methods often focus on structural safety and construction efficiency, frequently employing high-strength, high-energy-consuming support materials and processes, which impose a significant burden on the environment, such as soil erosion, noise and dust pollution, groundwater disturbance, and high carbon emissions. With the establishment of "dual carbon" targets and the increasing requirements for green construction, there is a need for control methods that can minimize negative environmental impacts while ensuring foundation pit stability and controllable deformation. Existing methods often separate deformation control from environmental protection measures, making it difficult to balance safety, economy, and environmental goals.

[0003] Chinese Patent Application Publication No. CN120174877A discloses a method for precise control of micro-deformation in deep foundation pits, including constructing the first layer of concrete support between the foundation pit retaining structures; constructing subsequent layers of concrete support between the foundation pit retaining structures as the soil of the foundation pit is excavated; installing an active servo control device between each concrete support of the subsequent layers of concrete support and the foundation pit retaining structure; grouting reinforcement of the unexcavated soil under both ends of each concrete support of the subsequent layers of concrete support; and precisely controlling the micro-deformation of the foundation pit retaining structure during the foundation pit excavation process by means of active compensation of the servo support force applied by the active servo control device and passive compensation of the grouting reinforcement of the soil in the pit, according to formula (1).

[0004] However, the existing technology has the following problems: it fails to consider the impact of the environment on the deformation of deep foundation pits, cannot ensure the stability of deep foundation pit deformation, resulting in low accuracy of deep foundation pit deformation prediction, and thus low accuracy of deep foundation pit deformation control. Summary of the Invention

[0005] Therefore, this invention provides a green and environmentally friendly control system and method for deep foundation pit deformation, which overcomes the problems in the prior art that fail to consider the impact of the environment on deep foundation pit deformation, cannot ensure the stability of deep foundation pit deformation, and thus result in low accuracy of deep foundation pit deformation prediction, and consequently low accuracy of deep foundation pit deformation control.

[0006] To achieve the above objectives, the present invention provides a green and environmentally friendly control system for deep foundation pit deformation, comprising:

[0007] The data acquisition module is used to acquire geological survey data and environmental data of the deep foundation pit construction area;

[0008] The model building module is used to perform numerical simulations on the geological survey data and environmental data to construct an integrated geometric model of the deep foundation pit construction area.

[0009] The green performance evaluation module is used to determine the recycling material replacement rate based on the integrated geometric model in order to determine whether the green environmental performance of the support structure used in the deep foundation pit meets the standards.

[0010] The material ratio optimization module is used to adjust the proportion of recycled materials in the support structure based on the ratio of the recycled material replacement rate to the preset recycled material replacement rate when the green and environmentally friendly performance of the support structure used in the deep foundation pit does not meet the standards.

[0011] The deep foundation pit deformation analysis module is used to determine the deep foundation pit deformation deviation rate of the integrated geometric model simulating the support construction, so as to determine whether the deep foundation pit deformation after the simulated support construction is within a reasonable range.

[0012] The construction parameter adjustment module is used to adjust the support structure parameters based on the relative difference between the deep foundation pit deformation deviation rate and the preset deep foundation pit deformation deviation rate when the deep foundation pit deformation after simulated support construction is not within a reasonable range.

[0013] The construction impact analysis module is used to determine the deep foundation pit construction disturbance index based on the integrated geometric model, so as to determine whether the impact of the deep foundation pit construction process on the surrounding environment meets the standards, and to optimize the support inclination angle after adjusting the support structure parameters based on the difference between the deep foundation pit construction disturbance index and the preset deep foundation pit construction disturbance index.

[0014] Furthermore, the green performance evaluation module determines that the green environmental performance of the support structure used in the deep foundation pit does not meet the standards based on the comparison results of the recycled material replacement rate being less than or equal to the preset recycled material replacement rate.

[0015] Furthermore, the material ratio optimization module determines that the green environmental protection efficiency of the support structure used in the deep foundation pit does not meet the standards based on the comparison results of the recycled material replacement rate being less than or equal to the preset recycled material replacement rate.

[0016] Furthermore, the material proportioning optimization module adjusts the proportion of recycled materials incorporated into the support structure, including:

[0017] Based on the comparison results where the ratio is less than or equal to a preset ratio, the proportion of recycled material incorporated into the support structure is increased by a first preset ratio adjustment coefficient.

[0018] Alternatively, based on the comparison results where the ratio is greater than a preset ratio, a second preset ratio adjustment coefficient is used to increase the proportion of recycled materials incorporated into the support structure.

[0019] Furthermore, the deep foundation pit deformation analysis module determines, based on a comparison structure where the deep foundation pit deformation deviation rate is greater than the preset deep foundation pit deformation deviation rate, that the deep foundation pit deformation after simulated support construction is not within a reasonable range.

[0020] Furthermore, the construction parameter adjustment module determines the anchor spacing of the support structure by using a preset spacing adjustment coefficient based on the comparison result that the relative difference between the deep foundation pit deformation deviation rate and the preset deep foundation pit deformation deviation rate is less than or equal to the preset relative difference.

[0021] Furthermore, the construction parameter adjustment module determines to increase the anchor prestress of the support structure by using a preset prestress adjustment coefficient based on the comparison result that the relative difference between the deep foundation pit deformation deviation rate and the preset deep foundation pit deformation deviation rate is greater than the preset relative difference.

[0022] Furthermore, the construction impact analysis module determines that the impact of the deep foundation pit construction process on the surrounding environment does not meet the standards based on the comparison result that the deep foundation pit construction disturbance index is greater than the preset deep foundation pit construction disturbance index.

[0023] Furthermore, the construction impact analysis module optimizes the support tilt angle, including:

[0024] Based on the comparison results where the difference is less than or equal to a preset difference, the support tilt angle is reduced by a first preset tilt angle adjustment coefficient.

[0025] Alternatively, based on the comparison result where the difference is greater than a preset difference, the support tilt angle is reduced by a second preset tilt angle adjustment coefficient.

[0026] In another aspect, this invention provides a method for controlling the deformation of deep foundation pits based on green and environmentally friendly principles, comprising:

[0027] Obtain geological survey data and environmental data for the area to be constructed in the deep foundation pit;

[0028] Numerical simulations were performed on the geological survey data and environmental data to construct an integrated geometric model of the deep foundation pit construction area;

[0029] The recycling material replacement rate is determined based on the integrated geometric model to determine whether the green and environmentally friendly performance of the support structure used in the deep foundation pit meets the standards, and the proportion of recycled materials incorporated into the support structure is adjusted according to the ratio of the recycling material replacement rate to the preset recycling material replacement rate.

[0030] Based on the integrated geometric model, the deformation deviation rate of the deep foundation pit is simulated during the support construction to determine whether the deformation of the deep foundation pit after the simulated support construction is within a reasonable range, and the support structure parameters are adjusted according to the relative difference between the deep foundation pit deformation deviation rate and the preset deep foundation pit deformation deviation rate.

[0031] Based on the integrated geometric model, the deep foundation pit construction disturbance index is determined to determine whether the impact of the deep foundation pit construction process on the surrounding environment meets the standards. The support inclination angle after adjusting the support structure parameters is optimized based on the difference between the deep foundation pit construction disturbance index and the preset deep foundation pit construction disturbance index.

[0032] Compared with existing technologies, the beneficial effects of this invention are as follows: By constructing an integrated geometric model, this invention determines the recycling material replacement rate based on the model to judge whether the green and environmentally friendly performance of the support structure meets the standards. If it does not meet the standards, the proportion of recycled materials is adjusted. The model is used to simulate construction and determine the deformation deviation rate to judge whether the deformation is reasonable. If it is unreasonable, the support structure parameters are adjusted. Based on the model, the construction disturbance index is determined to judge whether the construction's environmental impact meets the standards. The support inclination angle is optimized based on the disturbance index difference. Through the precise control of the recycling material replacement rate by the green performance evaluation module, the green and environmentally friendly performance of the support structure is effectively improved, promoting the green development of deep foundation pit construction. By adjusting the proportion of materials used in sustainable development, adverse environmental impacts can be reduced. Adjusting support structure parameters when deformation is unreasonable allows the support structure to better adapt to actual construction conditions, enhancing the stability of deep foundation pits and ensuring construction safety. Using the construction disturbance index as a criterion, the impact of construction on the surrounding environment can be comprehensively assessed, the support inclination angle optimized, and construction disturbance effectively controlled. This avoids excessive damage to the surrounding environment due to improper construction, protecting the safety and stability of surrounding buildings and underground facilities. This improves the green and environmentally friendly nature of deep foundation pit construction, enhances the scientific and reliable nature of deep foundation pit deformation control, and ultimately improves the accuracy of deep foundation pit deformation control.

[0033] Furthermore, this invention compares the recycled material replacement rate with a preset recycled material replacement rate to determine whether the green and environmentally friendly performance of the support structure meets the standards. If it does not meet the standards, the proportion of recycled materials is increased by a preset adjustment coefficient. The recycled material replacement rate is used as the basis for judgment, which scientifically and accurately measures the green and environmentally friendly performance of the support structure. The preset recycled material replacement rate is a reasonable standard derived from comprehensive historical compliance data. Only when the actual replacement rate is higher than this value does it indicate that a certain level of environmentally friendly material utilization has been achieved, ensuring the rigor of environmental assessment. The graded adjustment of the recycled material blending ratio can avoid problems such as unstable material performance caused by excessive increase of recycled materials. The recycled material replacement rate is obtained based on an integrated geometric model, making the data acquisition more consistent with the actual construction situation. This provides a reliable basis for adjusting the material ratio in actual construction, improves the scientificity and reliability of construction technology in terms of environmental protection and material utilization, effectively enhances the green and environmentally friendly level of the support structure, and ensures the environmental quality of construction.

[0034] Furthermore, this invention compares the maximum horizontal displacement limit simulated by the integrated geometric model with the measured maximum horizontal displacement at the top of the deep foundation pit support structure, and the calculated deep foundation pit deformation deviation rate with a preset deep foundation pit deformation deviation rate to determine whether the deformation is reasonable. If unreasonable, the anchor bolt spacing is reduced by a preset spacing adjustment coefficient or the anchor bolt prestress is increased by a preset prestress adjustment coefficient. When the relative difference is small, it indicates that the deformation deviation is relatively small, and appropriately reducing the anchor bolt spacing can effectively enhance the overall stability of the support structure and control the deformation. When the relative difference is large, it indicates that the deformation is more serious, and increasing the anchor bolt prestress can quickly improve the constraint capacity of the support structure and more effectively suppress the further development of deformation. The model can simulate various working conditions and stress conditions in actual construction, making the obtained deviation rate closer to the real deformation state. The support parameters are adjusted based on the characteristic values ​​calculated by combining the model simulation results and measured data, which makes the construction adjustment more in line with actual needs, improves the reliability and practicality of construction technology in controlling deep foundation pit deformation, and ensures the safety and stability of deep foundation pit construction and the surrounding environment.

[0035] Furthermore, this invention uses the deep foundation pit construction disturbance index to determine whether the impact of construction on the surrounding environment meets the standards. If it does not meet the standards, the support inclination angle is reduced by different preset inclination angle adjustment coefficients based on the difference between the deep foundation pit construction disturbance index and the preset difference value. Calculating the deep foundation pit construction disturbance index can promptly detect potential threats to the surrounding environment from construction, avoid problems such as damage to surrounding buildings and abnormal groundwater levels caused by excessive construction disturbance, ensure the stability of the surrounding environment, improve the accuracy and reliability of construction control, and achieve coordinated development of construction and environmental protection. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the module connection of the control system for deep foundation pit deformation based on green and environmentally friendly technology, according to an embodiment of the present invention.

[0037] Figure 2 This is a flowchart illustrating a method for controlling the deformation of deep foundation pits based on green and environmentally friendly principles, as described in an embodiment of the present invention.

[0038] Figure 3 This is a flowchart illustrating whether the green and environmentally friendly performance of the support structure used in deep foundation pits meets the standards in an embodiment of the present invention.

[0039] Figure 4 This is a flowchart for determining whether the deformation of a deep foundation pit after simulated support construction is within a reasonable range, as described in an embodiment of the present invention. Detailed Implementation

[0040] To make the objectives and advantages of the present invention clearer, the present invention will be further described below with reference to embodiments; it should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0041] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0042] It should be noted that the data in this embodiment are all derived from a comprehensive analysis and evaluation of historical test data and corresponding historical test results from the three months prior to this test. Those skilled in the art will understand that the determination of the above-mentioned parameters for any single item in this invention can be achieved by selecting the value with the highest percentage based on the data distribution as the preset standard parameter, using weighted summation to obtain the value as the preset standard parameter, substituting each historical data point into a specific formula and using the value obtained from that formula as the preset standard parameter, or other selection methods, as long as the invention can clearly define different specific situations in the single-item judgment process through the obtained values.

[0043] Please see Figure 1 As shown, it is a schematic diagram of the module connection of the control system for deep foundation pit deformation based on green and environmentally friendly technology in an embodiment of the present invention.

[0044] This invention relates to a green and environmentally friendly deep foundation pit deformation control system, comprising:

[0045] The data acquisition module is used to acquire geological survey data and environmental data of the deep foundation pit construction area;

[0046] The model building module, which is connected to the data acquisition module, is used to perform numerical simulation on the geological survey data and environmental data in order to build an integrated geometric model of the deep foundation pit construction area.

[0047] The green performance evaluation module, which is connected to the model construction module, is used to determine the recycling material replacement rate based on the integrated geometric model, so as to determine whether the green environmental performance of the support structure used in the deep foundation pit meets the standards.

[0048] The material ratio optimization module, which is connected to the green performance evaluation module, is used to adjust the proportion of recycled materials in the support structure based on the ratio of the recycled material replacement rate to the preset recycled material replacement rate when the green environmental performance of the support structure used in the deep foundation pit does not meet the standards.

[0049] The deep foundation pit deformation analysis module is connected to the model construction module and the material ratio optimization module respectively. It is used to determine the deep foundation pit deformation deviation rate of the integrated geometric model simulating the support construction, so as to determine whether the deep foundation pit deformation after the simulated support construction is within a reasonable range.

[0050] The construction parameter adjustment module, which is connected to the deep foundation pit deformation analysis module, is used to adjust the support structure parameters based on the relative difference between the deep foundation pit deformation deviation rate and the preset deep foundation pit deformation deviation rate when the deep foundation pit deformation after simulated support construction is not within a reasonable range.

[0051] The construction impact analysis module is connected to the model building module and the construction parameter adjustment module, respectively. It is used to determine the deep foundation pit construction disturbance index based on the integrated geometric model, so as to determine whether the impact of the deep foundation pit construction process on the surrounding environment meets the standards, and optimize the support inclination angle after adjusting the support structure parameters based on the difference between the deep foundation pit construction disturbance index and the preset deep foundation pit construction disturbance index.

[0052] Specifically, this invention constructs an integrated geometric model, determines the recycled material replacement rate based on the model to judge whether the green and environmentally friendly performance of the support structure meets the standards. If it does not meet the standards, the proportion of recycled materials is adjusted. The model is used to simulate construction and determine the deformation deviation rate to judge whether the deformation is reasonable. If it is unreasonable, the support structure parameters are adjusted. Based on the model, the construction disturbance index is determined to judge whether the construction's environmental impact meets the standards. The support inclination angle is optimized based on the disturbance index difference. Through the precise control of the recycled material replacement rate by the green performance evaluation module, the green and environmentally friendly performance of the support structure is effectively improved, promoting the development of deep foundation pit construction towards a green and sustainable direction. Adjusting the material mixing ratio reduces adverse environmental impacts. Adjusting support structure parameters when deformation is unreasonable allows the support structure to better adapt to actual construction conditions, enhances the stability of deep foundation pits, and ensures construction safety. Using the construction disturbance index as a criterion, the impact of construction on the surrounding environment is comprehensively assessed, the support inclination angle is optimized, construction disturbance is effectively controlled, and excessive damage to the surrounding environment due to improper construction is avoided. This protects the safety and stability of surrounding buildings and underground facilities, improves the green and environmentally friendly nature of deep foundation pit construction, enhances the scientific and reliable nature of deep foundation pit deformation control, and thus improves the accuracy of deep foundation pit deformation control.

[0053] Please see Figure 2 As shown, it is a flowchart of a deep foundation pit deformation control method based on green and environmentally friendly principles according to an embodiment of the present invention.

[0054] This invention also provides a method for controlling the deformation of deep foundation pits based on green and environmentally friendly principles, comprising:

[0055] Step S1: Obtain geological survey data and environmental data of the deep foundation pit construction area;

[0056] Step S2: Perform numerical simulation on the geological survey data and environmental data to construct an integrated geometric model of the deep foundation pit construction area;

[0057] Step S3: Determine the recycling material replacement rate based on the integrated geometric model to determine whether the green and environmentally friendly performance of the support structure used in the deep foundation pit meets the standards, and adjust the proportion of recycled materials in the support structure according to the ratio of the recycling material replacement rate to the preset recycling material replacement rate.

[0058] Step S4: Based on the integrated geometric model, simulate the construction to determine the deep foundation pit deformation deviation rate, so as to determine whether the deep foundation pit deformation after the simulated support construction is within a reasonable range, and adjust the support structure parameters according to the relative difference between the deep foundation pit deformation deviation rate and the preset deep foundation pit deformation deviation rate.

[0059] Step S5: Determine the deep foundation pit construction disturbance index based on the integrated geometric model to determine whether the impact of the deep foundation pit construction process on the surrounding environment meets the standards, and optimize the support inclination angle after adjusting the support structure parameters based on the difference between the deep foundation pit construction disturbance index and the preset deep foundation pit construction disturbance index.

[0060] In this embodiment of the invention, the model construction module is based on acquired geological survey data, including borehole columnar sections, geotechnical test reports, in-situ test data, and environmental data. The environmental data includes drawings of surrounding buildings, underground pipeline distribution maps, and groundwater monitoring data. Geological units are divided according to soil layer distribution, and key physical and mechanical parameters are extracted from each unit: natural unit weight, cohesion, internal friction angle, compression modulus, and permeability coefficient. The foundation type, dimensions, and concrete strength grade of surrounding buildings are extracted and converted into parameters for "linear elastic solid elements" in the model. Underground pipelines are established as "beam elements" based on pipe diameter, burial depth, and pipe stiffness. A numerical simulation software such as ABAQUS is used to construct an integrated geometric model.

[0061] In this embodiment of the invention, the integrated geometric model simulates layered excavation of the deep foundation pit according to the designed excavation dimensions, wherein the designed excavation dimensions are 80m long × 40m wide × 15m deep; the support structure is supported by "piles + anchors", with the piles having a diameter of 1.2m and a pile spacing of 1.8m, and the anchors having a diameter of 25mm and a length of 12m; the building foundation and underground pipelines are embedded into the integrated geometric model according to their actual locations.

[0062] In this embodiment of the invention, the integrated geometric model simulates a recycled material incorporation ratio of 50%, an anchor spacing of 2m in the support structure, an anchor prestress of 200kN, and a support inclination angle of 40°.

[0063] Please see Figure 3 As shown, it is a flowchart for determining whether the green and environmentally friendly performance of the support structure used in the deep foundation pit meets the standards in an embodiment of the present invention.

[0064] Specifically, the green performance evaluation module determines whether the green environmental performance of the support structure used in the deep foundation pit meets the standard based on the comparison between the recycled material replacement rate and the preset recycled material replacement rate.

[0065] If the recycling material replacement rate is less than or equal to the preset recycling material replacement rate, then the green environmental protection performance of the support structure used in the deep foundation pit is determined to be substandard.

[0066] If the recycling material replacement rate is greater than the preset recycling material replacement rate, then the green and environmentally friendly performance of the support structure used in the deep foundation pit is determined to meet the standards.

[0067] In this embodiment of the invention, the preset recycling material replacement rate is 0.8. The preset recycling material replacement rate is obtained by taking the average value of the recycling material replacement rates of the support structures used in several deep foundation pits in the past that met the green and environmental protection performance standards. However, the above value is not limited to this, and those skilled in the art can also adjust the value according to actual needs.

[0068] In this embodiment of the invention, the recycled material replacement rate is the ratio of the total mass of recycled materials in the support structure simulated by the integrated geometric model to the total mass of the support structure materials.

[0069] Specifically, when the material ratio optimization module determines that the green and environmentally friendly performance of the support structure used in the deep foundation pit does not meet the standards, it determines the proportion of recycled materials incorporated into the support structure based on the comparison between the ratio of the recycled material replacement rate to the preset recycled material replacement rate and the preset ratio.

[0070] If the ratio is less than or equal to the preset ratio, then it is determined that the proportion of recycled material in the support structure will be increased to the corresponding value by adjusting the first preset ratio coefficient.

[0071] If the ratio is greater than the preset ratio, then it is determined that the proportion of recycled material in the support structure will be increased to the corresponding value by adjusting the second preset ratio coefficient.

[0072] The ratio is the ratio of the recycled material replacement rate to the preset recycled material replacement rate, that is, the recycled material replacement rate divided by the preset recycled material replacement rate.

[0073] In this embodiment of the invention, the preset ratio is 0.6, but the above value is not limited to this, and those skilled in the art can adjust the value according to actual needs.

[0074] In this embodiment of the invention, the increased proportion of recycled material is the product of the proportion of recycled material and the preset proportion adjustment coefficient. The preset proportion adjustment coefficient includes a first preset proportion adjustment coefficient with a value of 1.2 and a second preset proportion adjustment coefficient with a value of 1.5. In order to ensure that the adjusted proportion of recycled material meets the actual needs, the adjustment range should not be too large. Therefore, an adjustment coefficient is set to control the adjustment range.

[0075] Specifically, this invention compares the recycled material replacement rate with a preset recycled material replacement rate to determine whether the green and environmentally friendly performance of the support structure meets the standards. If it does not meet the standards, the proportion of recycled materials is increased by a preset adjustment coefficient. The recycled material replacement rate is used as the basis for judgment, which scientifically and accurately measures the green and environmentally friendly performance of the support structure. The preset recycled material replacement rate is a reasonable standard derived from historical compliance data. Only when the actual replacement rate is higher than this value does it indicate that a certain level of environmentally friendly material utilization has been achieved, ensuring the rigor of environmental assessment. The graded adjustment of the recycled material blending ratio can avoid problems such as unstable material performance caused by excessive increase of recycled materials. The recycled material replacement rate is obtained based on an integrated geometric model, making the data acquisition more consistent with the actual construction situation. This provides a reliable basis for adjusting the material ratio in actual construction, improves the scientificity and reliability of construction technology in terms of environmental protection and material utilization, effectively enhances the green and environmentally friendly level of the support structure, and ensures the environmental quality of construction.

[0076] Please see Figure 4 As shown, it is a flowchart for determining whether the deformation of the deep foundation pit after simulated support construction is within a reasonable range, according to an embodiment of the present invention.

[0077] Specifically, the deep foundation pit deformation analysis module determines whether the deep foundation pit deformation after simulated support construction is within a reasonable range based on the comparison between the deep foundation pit deformation deviation rate and the preset deep foundation pit deformation deviation rate.

[0078] If the deep foundation pit deformation deviation rate is less than or equal to the preset deep foundation pit deformation deviation rate, then the deep foundation pit deformation after the simulated support construction is determined to be within a reasonable range.

[0079] If the deep foundation pit deformation deviation rate is greater than the preset deep foundation pit deformation deviation rate, then it is determined that the deep foundation pit deformation after the simulated support construction is not within a reasonable range.

[0080] In this embodiment of the invention, the preset deep foundation pit deformation deviation rate is 0.1. The preset deep foundation pit deformation deviation rate is obtained by taking the minimum value of the deep foundation pit deformation deviation rate after several historical simulated support constructions where the deep foundation pit deformation was not within a reasonable range. However, the above value is not limited to this, and those skilled in the art can also adjust the value according to actual needs.

[0081] In this embodiment of the invention, the deformation deviation rate of the deep foundation pit is the ratio of the absolute value of the difference between the horizontal displacement value simulated by the integrated geometric model and the horizontal displacement value at the top of the deep foundation pit support structure to the horizontal displacement value at the top of the deep foundation pit support structure.

[0082] In this embodiment of the invention, the reasonable range of deep foundation pit deformation refers to the range within which the deep foundation pit support structure can ensure the stability of the foundation pit itself and ensure that the surrounding environment does not exceed its tolerance capacity due to the deformation of the foundation pit.

[0083] Specifically, the construction parameter adjustment module determines the anchor spacing or anchor prestress of the support structure based on the comparison between the relative difference between the deep foundation pit deformation deviation rate and the preset deep foundation pit deformation deviation rate and the preset relative difference, when the deep foundation pit deformation deformation deviation rate is determined to be within a reasonable range after the construction parameter adjustment module determines the anchor spacing or anchor prestress of the support structure.

[0084] If the relative difference is less than or equal to the preset relative difference, then the anchor spacing of the support structure is reduced to the corresponding value by using the preset spacing adjustment coefficient;

[0085] If the relative difference is greater than the preset relative difference, then it is determined that the anchor prestress of the support structure will be increased to the corresponding value by using the preset prestress adjustment coefficient;

[0086] The relative difference is the relative difference between the deep foundation pit deformation deviation rate and the preset deep foundation pit deformation deviation rate, that is, the absolute value of the difference between the deep foundation pit deformation deviation rate and the preset deep foundation pit deformation deviation rate divided by the preset deep foundation pit deformation deviation rate value.

[0087] In this embodiment of the invention, the preset relative difference value is 1.2, but the above value is not limited to this, and those skilled in the art can also adjust the value according to actual needs.

[0088] In this embodiment of the invention, the reduced anchor spacing is the product of the anchor spacing and the preset spacing adjustment coefficient, which is 0.9. The increased anchor prestress is the product of the anchor prestress and the preset prestress adjustment coefficient, which is 1.3. To ensure that the adjusted anchor spacing or anchor prestress of the support structure meets the actual requirements, the adjustment range should not be too large. Therefore, an adjustment coefficient is set to control the adjustment range.

[0089] Specifically, this invention compares the deep foundation pit deformation deviation rate with a preset deep foundation pit deformation deviation rate to determine whether the deformation is reasonable. If unreasonable, the anchor bolt spacing is reduced by a preset spacing adjustment coefficient or the anchor bolt prestress is increased by a preset prestress adjustment coefficient. When the relative difference is small, it indicates that the deformation deviation is relatively small, and appropriately reducing the anchor bolt spacing can effectively enhance the overall stability of the support structure and control the deformation. When the relative difference is large, it indicates that the deformation is more serious, and increasing the anchor bolt prestress can quickly improve the constraint capacity of the support structure and more effectively inhibit the further development of deformation. The model can simulate various working conditions and stress conditions in actual construction, making the obtained deviation rate closer to the real deformation state. The support parameters are adjusted based on the characteristic values ​​calculated by combining the model simulation results and measured data, which makes the construction adjustment more in line with actual needs, improves the reliability and practicality of construction technology in controlling deep foundation pit deformation, and ensures the safety and stability of deep foundation pit construction and the surrounding environment.

[0090] Specifically, the construction impact analysis module, under the condition of determining the anchor spacing or anchor prestress of the support structure, determines whether the impact of the deep foundation pit construction process on the surrounding environment meets the standards based on the comparison results of the deep foundation pit construction disturbance index and the preset deep foundation pit construction disturbance index.

[0091] If the deep foundation pit construction disturbance index is less than or equal to the preset deep foundation pit construction disturbance index, then the impact of the deep foundation pit construction process on the surrounding environment is determined to meet the standard.

[0092] If the deep foundation pit construction disturbance index is greater than the preset deep foundation pit construction disturbance index, then it is determined that the impact of the deep foundation pit construction process on the surrounding environment does not meet the standards.

[0093] In this embodiment of the invention, the preset deep foundation pit construction disturbance index is 0.25. The preset deep foundation pit construction disturbance index is obtained by taking the minimum value of the deep foundation pit construction disturbance index when the impact of several historical deep foundation pit construction processes on the surrounding environment does not meet the standards. However, the above value is not limited to this, and those skilled in the art can also adjust the value according to actual needs.

[0094] In this embodiment of the invention, the process of obtaining the deep foundation pit construction disturbance index is as follows: the product of the ratio of the vibration velocity monitoring value of the surrounding buildings to the vibration velocity simulated by the integrated geometric model and a weight of 0.4, plus the ratio of the settlement velocity monitoring value of the surrounding buildings to the settlement velocity simulated by the integrated geometric model and a weight of 0.4, plus the ratio of the groundwater level change monitoring value to the groundwater level change value simulated by the integrated geometric model and a weight of 0.2.

[0095] Specifically, the construction impact analysis module determines the support inclination angle after optimizing and adjusting the support structure parameters based on the comparison between the deep foundation pit construction disturbance index and the preset deep foundation pit construction disturbance index and the preset difference.

[0096] If the difference is less than or equal to a preset difference, then the support tilt angle is reduced to the corresponding value by the first preset tilt angle adjustment coefficient.

[0097] If the difference is greater than the preset difference, then the support tilt angle is reduced to the corresponding value by the second preset tilt angle adjustment coefficient;

[0098] The difference is the difference between the deep foundation pit construction disturbance index and the preset deep foundation pit construction disturbance index, that is, the deep foundation pit construction disturbance index minus the preset deep foundation pit construction disturbance index.

[0099] In this embodiment of the invention, the preset difference value is 0.35, but the above value is not limited to this, and those skilled in the art can also adjust the value according to actual needs.

[0100] In this embodiment of the invention, the reduced support tilt angle is the product of the support tilt angle and the preset tilt angle adjustment coefficient. The preset tilt angle adjustment coefficient includes a first preset tilt angle adjustment coefficient with a value of 0.9 and a second preset tilt angle adjustment coefficient with a value of 0.8. In order to ensure that the adjusted support tilt angle meets the actual needs, the adjustment range should not be too large. Therefore, an adjustment coefficient is set to control the adjustment range.

[0101] Specifically, this invention uses a deep foundation pit construction disturbance index to determine whether the impact of construction on the surrounding environment meets the standards. If it does not meet the standards, the support inclination angle is reduced by adjusting different preset inclination angle coefficients based on the difference between the deep foundation pit construction disturbance index and the preset difference value. Calculating the deep foundation pit construction disturbance index can promptly detect potential threats to the surrounding environment from construction, avoid problems such as damage to surrounding buildings and abnormal groundwater levels caused by excessive construction disturbance, ensure the stability of the surrounding environment, improve the accuracy and reliability of construction control, and achieve coordinated development of construction and environmental protection.

[0102] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles 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 all fall within the scope of protection of the present invention.

Claims

1. A green-based deep foundation deformation control system, characterized in that, The method comprises the following steps: a data acquisition module is used to acquire geological survey data and environmental data of a deep foundation pit to be constructed; a model construction module is used to perform numerical simulation on the geological survey data and environmental data to construct an integrated geometric model of the deep foundation pit construction area; a green performance evaluation module is used to determine a recycled material replacement rate based on the integrated geometric model to determine whether the green environmental protection performance of the supporting structure of the deep foundation pit meets the standard; a material proportioning optimization module is used to adjust the proportion of recycled materials in the supporting structure based on the ratio of the recycled material replacement rate to a preset recycled material replacement rate when the green environmental protection performance of the supporting structure of the deep foundation pit does not meet the standard; a deep foundation pit deformation analysis module is used to determine a deep foundation pit deformation deviation rate of the integrated geometric model simulating the supporting construction to determine whether the deep foundation pit deformation after the simulated supporting construction is within a reasonable range; a construction parameter adjustment module is used to adjust the supporting structure parameters based on the relative difference between the deep foundation pit deformation deviation rate and a preset deep foundation pit deformation deviation rate when the deep foundation pit deformation after the simulated supporting construction is not within the reasonable range; a construction influence analysis module is used to determine a deep foundation pit construction disturbance index based on the integrated geometric model to determine whether the influence of the deep foundation pit construction process on the surrounding environment meets the standard, and to optimize the support inclination angle after the adjustment of the supporting structure parameters according to the difference between the deep foundation pit construction disturbance index and a preset deep foundation pit construction disturbance index.

2. The green-based deep foundation deformation control system according to claim 1, wherein, The green performance evaluation module determines that the green environmental protection performance of the supporting structure of the deep foundation pit does not meet the standard based on the comparison result that the recycled material replacement rate is less than or equal to the preset recycled material replacement rate.

3. The green-based deep foundation deformation control system according to claim 2, wherein, The material proportioning optimization module determines that the green environmental protection performance of the supporting structure of the deep foundation pit does not meet the standard based on the comparison result that the recycled material replacement rate is less than or equal to the preset recycled material replacement rate.

4. The green-based deep foundation deformation control system according to claim 3, characterized in that, The material proportioning optimization module adjusts the proportion of recycled materials in the supporting structure, including: determining to increase the proportion of recycled materials in the supporting structure by a first preset proportion adjustment coefficient based on the comparison result that the ratio is less than or equal to the preset ratio; or, determining to increase the proportion of recycled materials in the supporting structure by a second preset proportion adjustment coefficient based on the comparison result that the ratio is greater than the preset ratio.

5. The green-based deep foundation deformation control system according to claim 4, characterized in that, The deep foundation pit deformation analysis module determines that the deep foundation pit deformation after the simulated supporting construction is not within the reasonable range based on the comparison result that the deep foundation pit deformation deviation rate is greater than the preset deep foundation pit deformation deviation rate.

6. The green-based deep foundation deformation control system according to claim 5, wherein, The construction parameter adjustment module determines to decrease the anchor rod spacing of the supporting structure by a preset spacing adjustment coefficient based on the comparison result that the relative difference between the deep foundation pit deformation deviation rate and the preset deep foundation pit deformation deviation rate is less than or equal to a preset relative difference.

7. The green-based deep foundation deformation control system according to claim 6, characterized in that, The construction parameter adjustment module determines to increase the anchor rod prestress of the supporting structure by a preset prestress adjustment coefficient based on the comparison result that the relative difference between the deep foundation pit deformation deviation rate and the preset deep foundation pit deformation deviation rate is greater than the preset relative difference.

8. The green-based deep foundation deformation control system according to claim 7, characterized in that, The construction influence analysis module determines that the influence of the deep foundation pit construction process on the surrounding environment does not meet the standard based on the comparison result that the deep foundation pit construction disturbance index is greater than the preset deep foundation pit construction disturbance index.

9. The green-based deep foundation deformation control system according to claim 8, wherein, The construction influence analysis module optimizes the support inclination angle, including: determining, based on a comparison result that the difference is less than or equal to a preset difference, that the support inclination is to be reduced by a first preset inclination adjustment coefficient; or, determining, based on a comparison result that the difference is greater than the preset difference, that the support inclination is to be reduced by a second preset inclination adjustment coefficient.

10. A method for controlling deformation of a deep foundation based on green environmental protection, using the system for controlling deformation of a deep foundation based on green environmental protection according to any one of claims 1-9. The method comprises: obtaining geological survey data and environmental data of a deep foundation pit to be constructed; performing numerical simulation on the geological survey data and the environmental data to construct an integrated geometric model of the deep foundation pit construction area; determining a recycled material replacement rate based on the integrated geometric model to determine whether the green environmental protection performance of the support structure of the deep foundation pit meets the standard, and adjusting the proportion of the recycled material in the support structure according to the ratio of the recycled material replacement rate to a preset recycled material replacement rate; simulating a deep foundation pit deformation deviation rate based on the integrated geometric model to determine whether the deformation of the deep foundation pit after the simulation of the support construction is within a reasonable range, and adjusting the support structure parameters according to the relative difference between the deep foundation pit deformation deviation rate and a preset deep foundation pit deformation deviation rate; determining a deep foundation pit construction disturbance index based on the integrated geometric model to determine whether the influence of the deep foundation pit construction process on the surrounding environment meets the standard, and optimizing the support inclination after the adjustment of the support structure parameters according to the difference between the deep foundation pit construction disturbance index and a preset deep foundation pit construction disturbance index.

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