Green and environment-friendly deep foundation pit deformation control system and method

Abstract

The invention relates to the technical field of deep foundation pit construction, in particular to a deep foundation pit deformation control system and method based on green environmental protection, and the method comprises the steps: obtaining geological survey data and environmental data of a to-be-constructed area of a deep foundation pit; constructing an integrated geometric model of the deep foundation pit construction area; determining whether the green and environment-friendly efficiency of the supporting structure for the deep foundation pit reaches the standard or not based on the replacement rate of the recycled materials, and adjusting the doping proportion of the recycled materials in the supporting structure according to the ratio; based on the deformation deviation rate of the deep foundation pit, determining whether the deformation of the deep foundation pit after simulated support construction is in a reasonable range or not, and adjusting support structure parameters according to the relative difference; and whether the influence of the deep foundation pit construction process on the surrounding environment reaches the standard or not is determined based on the deep foundation pit construction disturbance index, and the supporting inclination angle obtained after the supporting structure parameters are adjusted is optimized according to the difference value. The accuracy of deformation control of the deep foundation pit is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of deep foundation pit construction, in particular to a deep foundation pit deformation control system and method based on green environmental protection. BACKGROUND

[0002] Deep foundation pit engineering is a key link in urban construction, and its deformation control is directly related to the safety of surrounding buildings, underground pipelines and construction itself. Traditional foundation pit support and deformation control methods focus more on structural safety and construction efficiency, and often use high-strength and high-energy support materials and processes, which cause great burden to the environment, such as soil erosion, noise and dust pollution, underground water system disturbance and high carbon emission, etc. With the establishment of the "double carbon" goal and the improvement of green construction requirements, a control method is needed that can minimize the negative impact on the environment while ensuring the stability of the foundation pit and the controllability of the deformation. The existing methods often separate deformation control from environmental protection measures, making it difficult to balance safety, economy and environmental protection goals.

[0003] Chinese patent application publication No. CN120174877A discloses a deep foundation pit micro-deformation precise control method, which comprises constructing a first concrete support between the foundation pit retaining structures; sequentially constructing subsequent concrete supports between the foundation pit retaining structures as the soil body of the foundation pit is excavated, installing active servo control devices between each concrete support of the subsequent concrete supports and the foundation pit retaining structures, and grouting and reinforcing the unexcavated soil body in the pit below the two ends of each concrete support of the subsequent concrete supports. According to formula (1), the active servo control device is used to apply active compensation of servo support force and passive compensation of grouting and reinforcement of the soil body in the pit to precisely control the micro-deformation of the foundation pit retaining structure during the excavation of the foundation pit.

[0004] However, the existing technology has the following problems: it fails to consider the environmental impact on deep foundation pit deformation, cannot ensure the stability of deep foundation pit deformation, and leads to low accuracy of deep foundation pit deformation prediction, thereby resulting in low accuracy of deep foundation pit deformation control. SUMMARY

[0005] Therefore, the present application provides a deep foundation pit deformation control system and method based on green environmental protection to overcome the problem that the existing technology fails to consider the environmental impact on deep foundation pit deformation, cannot ensure the stability of deep foundation pit deformation, leads to low accuracy of deep foundation pit deformation prediction, and thereby results in low accuracy of deep foundation pit deformation control.

[0006] To achieve the above-mentioned purpose, the present application provides a deep foundation pit deformation control system based on green environmental protection, comprising: a data acquisition module for acquiring geological survey data and environmental data of a deep foundation pit to be constructed; a model construction module configured to perform numerical simulation on the geological survey data and the environmental data to construct an integrated geometric model of a deep foundation pit construction area; a green performance evaluation module configured to determine a recycled material replacement rate based on the integrated geometric model to determine whether a green environmental performance of a supporting structure of the deep foundation pit meets a standard; a material proportioning optimization module configured to adjust a proportion of the recycled material in the supporting structure based on a ratio of the recycled material replacement rate to a preset recycled material replacement rate when the green environmental performance of the supporting structure of the deep foundation pit does not meet the standard; a deep foundation pit deformation analysis module configured to determine a deep foundation pit deformation deviation rate of the supporting construction of the integrated geometric model to determine whether a deep foundation pit deformation after the supporting construction meets a reasonable range; a construction parameter adjustment module configured to adjust a supporting structure parameter based on a 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 supporting construction does not meet the reasonable range; a construction influence analysis module configured to determine a deep foundation pit construction disturbance index based on the integrated geometric model to determine whether an influence of a deep foundation pit construction process on a surrounding environment meets a standard, and to optimize a support inclination angle of the supporting structure after the adjustment of the supporting structure parameter according to a difference between the deep foundation pit construction disturbance index and a preset deep foundation pit construction disturbance index.

[0007] Further, the green performance evaluation module determines that the green environmental performance of the supporting structure of the deep foundation pit does not meet the standard based on a comparison result that the recycled material replacement rate is less than or equal to the preset recycled material replacement rate.

[0008] Further, the material proportioning optimization module determines that the green environmental performance of the supporting structure of the deep foundation pit does not meet the standard based on a comparison result that the recycled material replacement rate is less than or equal to the preset recycled material replacement rate.

[0009] Further, the material proportioning optimization module adjusting the proportion of the recycled material in the supporting structure includes, determining to increase the proportion of the recycled material in the supporting structure by a first preset proportion adjustment coefficient based on a comparison result that the ratio is less than or equal to a preset ratio; or, determining to increase the proportion of the recycled material in the supporting structure by a second preset proportion adjustment coefficient based on a comparison result that the ratio is greater than the preset ratio.

[0010] Further, the deep foundation pit deformation analysis module determines that the deep foundation pit deformation after the supporting construction does not meet the reasonable range based on a comparison result that the deep foundation pit deformation deviation rate is greater than a preset deep foundation pit deformation deviation rate.

[0011] Further, 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.

[0012] Further, 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 a preset relative difference.

[0013] Further, the construction influence analysis module determines that the influence of the deep foundation pit construction process on the surrounding environment is substandard based on the comparison result that the deep foundation pit construction disturbance index is greater than a preset deep foundation pit construction disturbance index.

[0014] Further, the construction influence analysis module optimizes the support inclination angle, including, determining to decrease the support inclination angle by a first preset inclination angle adjustment coefficient based on the comparison result that the difference value is less than or equal to a preset difference value; or, determining to decrease the support inclination angle by a second preset inclination angle adjustment coefficient based on the comparison result that the difference value is greater than a preset difference value.

[0015] Another aspect of the present application also provides a deep foundation pit deformation control method based on green environmental protection, including: obtaining geological survey data and environmental data of a deep foundation pit to-be-constructed area; 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 supporting structure of the deep foundation pit is up to standard, and adjusting the proportion of recycled materials incorporated in the supporting 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 of the supporting construction based on the integrated geometric model to determine whether the deep foundation pit deformation after the simulation of the supporting construction is within a reasonable range, and adjusting the supporting 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 is up to standard, and optimizing 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.

[0016] Compared with the prior art, the beneficial effects of the present application are that the present application determines the replacement rate of recycled materials based on the model to judge whether the green environmental protection performance of the support structure meets the standard or not, adjusts the mixing proportion of recycled materials, uses the model to simulate construction to determine the deformation deviation rate to judge whether the deformation is reasonable, and adjusts the support structure parameters when it is not reasonable, determines the construction disturbance index based on the model to judge whether the construction has an impact on the environment, and optimizes the support inclination angle according to the disturbance index difference, accurately controls the replacement rate of recycled materials through the green performance evaluation module, effectively improves the green environmental protection performance of the support structure, promotes the development of deep foundation pit construction towards the green and sustainable direction, adjusts the mixing proportion of materials, reduces the adverse effects on the environment, adjusts the support structure parameters when the deformation is not reasonable, which can make the support structure better adapt to the actual construction situation, enhance the stability of the deep foundation pit, and ensure the construction safety, take the construction disturbance index as the basis for judgment, comprehensively evaluate the impact of construction on the surrounding environment, optimize the support inclination angle, effectively control the construction disturbance, avoid excessive damage to the surrounding environment due to improper construction, protect the safety and stability of surrounding buildings, underground facilities and the like, improve the green environmental protection of deep foundation pit construction, improve the scientificity and reliability of deep foundation pit deformation control, and thus improve the accuracy of deep foundation pit deformation control.

[0017] Further, the present application compares the replacement rate of recycled materials with the preset replacement rate of recycled materials to judge whether the green environmental protection performance of the support structure meets the standard, and increases the mixing proportion of recycled materials by the preset proportion adjustment coefficient when it does not meet the standard, takes the replacement rate of recycled materials as the basis for judgment, scientifically and accurately measures the green environmental protection performance of the support structure, the preset replacement rate of recycled materials is a reasonable standard obtained by comprehensively analyzing historical data, only when the actual replacement rate is higher than this value, it indicates that a certain level has been reached in the use of environmental protection materials, ensures the rigor of environmental protection evaluation, and graded adjustment of the mixing proportion of recycled materials can avoid excessive increase of recycled materials leading to unstable material performance and other problems, the replacement rate of recycled materials is obtained based on the integrated geometric model, which makes the data acquisition more in line with the actual construction situation, provides a reliable basis for material proportioning adjustment in actual construction, improves the scientificity and reliability of construction technology in the aspects of environmental protection and material utilization, effectively improves the green environmental protection level of the support structure, and ensures the environmental protection quality of construction.

[0018] Further, the application judges whether the deformation is reasonable by comparing the deep foundation deformation deviation rate calculated by the maximum horizontal displacement limit value of the integrated geometric model simulation and the maximum horizontal displacement measured value of the top of the deep foundation supporting structure with the preset deep foundation deformation deviation rate, and if not reasonable, reduces the anchor rod spacing by a preset spacing adjustment coefficient or increases the anchor rod prestress 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 rod spacing can effectively enhance the overall stability of the supporting structure and control the deformation. When the relative difference is large, it indicates that the deformation is relatively serious, and increasing the anchor rod prestress can quickly improve the constraint ability of the supporting structure and more effectively inhibit the further development of the deformation. The model can simulate various working conditions and stress conditions in actual construction, so that the obtained deviation rate is closer to the actual deformation state. According to the characteristic value calculated by combining the model simulation result and the measured data, the supporting parameters are adjusted, which can make the construction adjustment more in line with the actual demand, improve the reliability and practicality of the construction technology in controlling the deep foundation deformation, and ensure the safety and stability of the deep foundation construction and the surrounding environment.

[0019] Further, the application judges whether the construction disturbance to the surrounding environment meets the standard by the deep foundation construction disturbance index, and if not, reduces the support inclination angle by different preset inclination adjustment coefficients according to the difference between the deep foundation construction disturbance index and the preset difference value. The calculation of the deep foundation construction disturbance index can timely detect the potential threat of construction to the surrounding environment, avoid problems such as damage to surrounding buildings and abnormal underground water level caused by excessive construction disturbance, ensure the stability of the surrounding environment, and improve the accuracy and reliability of construction control, realizing the coordinated development of construction and environmental protection. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The module connection schematic diagram of the deep foundation deformation control system based on green environmental protection of the embodiment of the application; Figure 2 The flowchart of the deep foundation deformation control method based on green environmental protection of the embodiment of the application; Figure 3 The flowchart of determining whether the green environmental protection performance of the supporting structure used for the deep foundation meets the standard of the embodiment of the application; Figure 4 The flowchart of determining whether the deep foundation deformation after simulating the supporting construction is within a reasonable range of the embodiment of the application. DETAILED DESCRIPTION

[0021] In order to make the purpose and advantages of the application more clear and explicit, the application will be further described below in combination with embodiments; it should be understood that the specific embodiments described herein are only used to explain the application and do not limit the application.

[0022] The preferred embodiments of the present application will be described below with reference to the accompanying drawings. Those skilled in the art will appreciate that the embodiments are only used to explain the technical principles of the present application and not to limit the protection scope of the present application.

[0023] It should be noted that the data in the present embodiment are obtained by comprehensive analysis and evaluation of historical detection data and corresponding historical detection results in the three months before the present detection by the present application. Those skilled in the art can understand that the determination method of the present application for a single parameter can be to select the value with the highest proportion as the preset standard parameter according to the data distribution, to use weighted summation to obtain the value as the preset standard parameter, to substitute each historical data into a specific formula and to obtain the value by the formula as the preset standard parameter, or other selection methods, as long as the present application can clearly define different specific situations in the single determination process by the obtained value.

[0024] Referring to FIG. 1, Figure 1 FIG. 1 is a schematic diagram of the module connection of the deep foundation pit deformation control system based on green environmental protection according to an embodiment of the present application.

[0025] The deep foundation pit deformation control system based on green environmental protection according to an embodiment of the present application comprises: a data acquisition module configured to acquire geological survey data and environmental data of a deep foundation pit to-be-constructed region; a model construction module connected to the data acquisition module and configured to perform numerical simulation on the geological survey data and the environmental data to construct an integrated geometric model of the deep foundation pit construction region; a green performance evaluation module connected to the model construction module and configured to determine a recycled material replacement rate based on the integrated geometric model to determine whether the green environmental protection performance of a supporting structure for the deep foundation pit meets a standard; a material proportioning optimization module connected to the green performance evaluation module and configured 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 for the deep foundation pit does not meet the standard; a deep foundation pit deformation analysis module connected to the model construction module and the material proportioning optimization module respectively and configured to determine a deep foundation pit deformation deviation rate of the integrated geometric model simulating 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 connected to the deep foundation pit deformation analysis module and configured 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; and a construction influence analysis module connected with the model construction module and the construction parameter adjustment module, configured 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 according to the difference between the deep foundation pit construction disturbance index and a preset deep foundation pit construction disturbance index.

[0026] Specifically, the present application determines the recycling material replacement rate based on the model to determine whether the green environmental protection performance of the support structure meets the standard, adjusts the recycling material mixing ratio when the green environmental protection performance of the support structure does not meet the standard, simulates the construction by the model to determine the deformation deviation rate to determine whether the deformation is reasonable, adjusts the support structure parameters when the deformation is not reasonable, determines the construction disturbance index based on the model to determine whether the influence of the construction on the environment meets the standard, and optimizes the support inclination angle according to the disturbance index difference. Through the precise control of the recycling material replacement rate by the green performance evaluation module, the green environmental protection performance of the support structure is effectively improved, the deep foundation pit construction is promoted to develop in a green and sustainable direction, the mixing ratio of the materials is adjusted to reduce the adverse effects on the environment, the support structure parameters are adjusted when the deformation is not reasonable, which can make the support structure better adapt to the actual construction situation, enhance the stability of the deep foundation pit, and ensure the construction safety. The construction disturbance index is used as the basis for judgment to comprehensively evaluate the influence of the construction on the surrounding environment, optimize the support inclination angle, effectively control the construction disturbance, avoid excessive damage to the surrounding environment due to improper construction, protect the safety and stability of the surrounding buildings, underground facilities and the like, improve the green environmental protection of the deep foundation pit construction, and improve the scientificity and reliability of the deep foundation pit deformation control, thereby improving the accuracy of the deep foundation pit deformation control.

[0027] Referring to Figure 2 Fig. 1 is a flowchart of a deep foundation pit deformation control method based on green environmental protection according to an embodiment of the present application.

[0028] The present application also provides a deep foundation pit deformation control method based on green environmental protection, comprising: Step S1, obtaining geological survey data and environmental data of a deep foundation pit to-be-constructed area; Step S2, 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; Step S3, determining a recycling material replacement rate based on the integrated geometric model to determine whether the green environmental protection performance of the support structure used by the deep foundation pit meets the standard, and adjusting the mixing ratio of the recycling material in the support structure according to the ratio of the recycling material replacement rate to a preset recycling material replacement rate; Step S4, simulating the construction based on the integrated geometric model to determine a deep foundation pit deformation deviation rate to determine whether the deep foundation pit deformation 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. Step S5, 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 angle of the adjusted support structure parameter according to the difference between the deep foundation pit construction disturbance index and the preset deep foundation pit construction disturbance index.

[0029] In the embodiment of the present application, the model construction module is based on the obtained geological survey data, the geological survey data includes borehole columnar graph, soil test report and in-situ test data and environmental data, the environmental data includes surrounding building drawings, underground pipeline distribution map and underground water monitoring data, the geological units are divided according to soil layer distribution, key physical and mechanical parameters of each unit are extracted: natural unit weight, cohesion, internal friction angle, compression modulus and permeability coefficient; the foundation type, size and concrete strength grade of the surrounding buildings are extracted and converted into the parameters of the "linear elastic solid element" in the model; the underground pipelines are established as "beam elements" according to pipe diameter, buried depth and pipe material stiffness; the numerical simulation software such as ABAQUS is used to construct an integrated geometric model: In the embodiment of the present application, the integrated geometric model simulates the layered excavation according to the designed excavation size of the deep foundation pit, wherein the designed excavation size is 80m long*40m wide*15m deep; the support structure is supported by "row piles + anchor rods", the row piles are 1.2m in diameter and 1.8m in pile spacing, and the anchor rods are 25mm in diameter and 12m in length; the building foundation and underground pipelines are embedded in the integrated geometric model according to the actual position.

[0030] In the embodiment of the present application, the integrated geometric model simulates that the recycling material mixing ratio is 50%, the anchor rod spacing of the support structure is 2m, the anchor rod prestress is 200kN, and the support inclination angle is 40°.

[0031] Please refer to Figure 3 It is a flow chart for determining whether the green environmental protection performance of the support structure used for the deep foundation pit meets the standard.

[0032] Specifically, the green performance evaluation module determines whether the green environmental protection performance of the support structure used for the deep foundation pit meets the standard according to the comparison result of the recycling material replacement rate and the preset recycling material replacement rate; If the recycling material replacement rate is less than or equal to the preset recycling material replacement rate, it is determined that the green environmental protection performance of the support structure used for the deep foundation pit does not meet the standard; If the recycling material replacement rate is greater than the preset recycling material replacement rate, it is determined that the green environmental protection performance of the support structure used for the deep foundation pit meets the standard.

[0033] In the embodiment of the present application, the preset recycling material replacement rate is 0.8, which is obtained by averaging the recycling material replacement rates of the supporting structures of a plurality of deep foundation pits that meet the green environmental protection performance standards, but the above value is not limited thereto, and the value can be adjusted according to actual needs by those skilled in the art.

[0034] In the embodiment of the present application, the recycling material replacement rate is the ratio of the total mass of the recycling material in the supporting structure simulated by the integrated geometric model to the total mass of the material of the supporting structure.

[0035] Specifically, the material ratio optimization module determines the adjustment of the mixing proportion of the recycling material in the supporting structure according to the comparison result of the ratio of the recycling material replacement rate to the preset recycling material replacement rate and the preset ratio. If the ratio is less than or equal to the preset ratio, it is determined that the mixing proportion of the recycling material in the supporting structure is increased to a corresponding value by a first preset proportion adjustment coefficient. If the ratio is greater than the preset ratio, it is determined that the mixing proportion of the recycling material in the supporting structure is increased to a corresponding value by a second preset proportion adjustment coefficient. The ratio is the ratio of the recycling material replacement rate to the preset recycling material replacement rate, that is, the recycling material replacement rate divided by the preset recycling material replacement rate.

[0036] In the embodiment of the present application, the preset ratio is 0.6, but the above value is not limited thereto, and the value can be adjusted according to actual needs by those skilled in the art.

[0037] In the embodiment of the present application, the increased recycling material mixing proportion is the product of the recycling material mixing proportion and the preset proportion adjustment coefficient, the preset proportion adjustment coefficient includes the first preset proportion adjustment coefficient, which is 1.2, and the second preset proportion adjustment coefficient, which is 1.5. In order to ensure that the adjusted recycling material mixing proportion meets the actual needs, the adjustment range should not be too large, so the adjustment coefficient is set to control the adjustment range.

[0038] Specifically, the application compares the replacement rate of recycled materials with the preset replacement rate of recycled materials to determine whether the green environmental protection performance of the supporting structure meets the standard, and if not, the replacement rate of recycled materials is increased by a preset proportion adjustment coefficient. The replacement rate of recycled materials is used as a basis for scientifically and accurately measuring the green environmental protection performance of the supporting structure. The preset replacement rate of recycled materials is a reasonable standard obtained by comprehensively analyzing historical data that meets the standard. Only when the actual replacement rate is higher than this value, it indicates that a certain level of environmental protection material utilization has been achieved, ensuring the rigor of environmental assessment. Gradual adjustment of the replacement rate of recycled materials can avoid problems such as unstable material performance caused by excessive increase of recycled materials. The replacement rate of recycled materials is obtained based on an integrated geometric model, making the data acquisition more in line with actual construction conditions, providing a reliable basis for material proportioning adjustment in actual construction, improving the scientificity and reliability of construction technology in terms of environmental protection and material utilization, effectively improving the green environmental protection level of the supporting structure, and ensuring the environmental quality of construction.

[0039] Please refer to Figure 4 The flow chart for determining whether the deep foundation pit deformation after simulated supporting construction is within a reasonable range is shown in FIG. 1.

[0040] Specifically, the deep foundation pit deformation analysis module determines whether the deep foundation pit deformation after simulated supporting construction is within a reasonable range according to the comparison result of the deep foundation pit deformation deviation rate and the preset deep foundation pit deformation deviation rate. If the deep foundation pit deformation deviation rate is less than or equal to the preset deep foundation pit deformation deviation rate, it is determined that the deep foundation pit deformation after simulated supporting construction is within a reasonable range. If the deep foundation pit deformation deviation rate is greater than the preset deep foundation pit deformation deviation rate, it is determined that the deep foundation pit deformation after simulated supporting construction is not within a reasonable range.

[0041] In the embodiment of the application, the preset deep foundation pit deformation deviation rate is 0.1, which is obtained under the condition that the minimum value of the deep foundation pit deformation deviation rate of the deep foundation pit deformation after simulated supporting construction is not within a reasonable range is obtained from historical data. However, the above value is not limited thereto, and those skilled in the art can adjust the value according to actual needs.

[0042] In the embodiment of the application, the deep foundation pit deformation deviation rate 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 of the top of the deep foundation pit supporting structure to the horizontal displacement value of the top of the deep foundation pit supporting structure.

[0043] In the embodiment of the application, the reasonable range of the deep foundation pit deformation refers to the interval in which the deep foundation pit supporting structure can ensure the stability of the foundation pit structure itself and ensure that the surrounding environment does not exceed the tolerance capacity due to the deformation of the foundation pit.

[0044] Specifically, the construction parameter adjustment module determines to adjust the anchor rod spacing or the anchor rod prestress of the support structure according to a comparison result of a relative difference between the deep foundation pit deformation deviation rate and the preset deep foundation pit deformation deviation rate and the preset relative difference, under the condition that the deep foundation pit deformation after the simulated support construction is determined to be out of a reasonable range. If the relative difference is less than or equal to the preset relative difference, it is determined to reduce the anchor rod spacing of the support structure to a corresponding value by a preset spacing adjustment coefficient. If the relative difference is greater than the preset relative difference, it is determined to increase the anchor rod prestress of the support structure to a corresponding value by a preset prestress adjustment coefficient. The relative difference is a relative difference between the deep foundation pit deformation deviation rate and the preset deep foundation pit deformation deviation rate, that is, an absolute value of a 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.

[0045] In the embodiment of the application, the preset relative difference is 1.2, but the above value is not limited thereto, and a person skilled in the art can adjust the value according to actual needs.

[0046] In the embodiment of the application, the reduced anchor rod spacing is a product of the anchor rod spacing and a preset spacing adjustment coefficient, the preset spacing adjustment coefficient is 0.9, the increased anchor rod prestress is a product of the anchor rod prestress and a preset prestress adjustment coefficient, and the preset prestress adjustment coefficient is 1.3. In order to ensure that the anchor rod spacing or the anchor rod prestress of the adjusted support structure meets actual needs, the adjustment range should not be too large, so the adjustment coefficient is correspondingly set to control the adjustment range.

[0047] Specifically, the application compares the deep foundation pit deformation deviation rate with the preset deep foundation pit deformation deviation rate to determine whether the deformation is reasonable. If not, the anchor rod spacing is reduced by a preset spacing adjustment coefficient or the anchor rod 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 rod 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 relatively serious, and increasing the anchor rod prestress can quickly improve the restraint capacity of the support structure and more effectively suppress the further development of the deformation. The model can simulate various working conditions and stress conditions in actual construction, so that the obtained deviation rate is closer to the actual deformation state. According to the model simulation result and the measured data, the characteristic value calculated by combining the model simulation result and the measured data is used to adjust the support parameters, so that the construction adjustment is more in line with actual needs, the reliability and practicality of the construction technology in controlling the deep foundation pit deformation are improved, and the safety and stability of the deep foundation pit construction and the surrounding environment are ensured.

[0048] Specifically, the construction influence analysis module determines whether the influence of the deep foundation pit construction process on the surrounding environment is up to standard according to a comparison result of the deep foundation pit construction disturbance index and the preset deep foundation pit construction disturbance index under the condition of determining adjustment of the anchor rod spacing or the anchor rod prestress of the supporting structure. If the deep foundation pit construction disturbance index is less than or equal to the preset deep foundation pit construction disturbance index, it is determined that the influence of the deep foundation pit construction process on the surrounding environment is up to standard. If the deep foundation pit construction disturbance index is greater than the preset deep foundation pit construction disturbance index, it is determined that the influence of the deep foundation pit construction process on the surrounding environment is not up to standard.

[0049] In the embodiment of the application, the preset deep foundation pit construction disturbance index is 0.25, and the preset deep foundation pit construction disturbance index is obtained in the case that the minimum value of the deep foundation pit construction disturbance index of a plurality of deep foundation pit construction processes that do not meet the standard of influence on the surrounding environment is taken, but the above-mentioned value is not limited thereto, and the value can be adjusted according to actual needs by those skilled in the art.

[0050] In the embodiment of the application, the deep foundation pit construction disturbance index is obtained by multiplying the ratio of the surrounding building vibration speed monitoring value to the vibration speed simulated by the integrated geometric model by the weight 0.4, adding the ratio of the surrounding building settlement speed monitoring value to the settlement speed simulated by the integrated geometric model by the weight 0.4, and adding the ratio of the underground water level change monitoring value to the underground water level change value simulated by the integrated geometric model by the weight 0.2.

[0051] Specifically, the construction influence analysis module determines the support inclination angle after optimization and adjustment of the supporting structure parameters according to a comparison result of the difference between the deep foundation pit construction disturbance index and the preset deep foundation pit construction disturbance index and the preset difference under the condition that the influence of the deep foundation pit construction process on the surrounding environment is not up to standard. If the difference is less than or equal to the preset difference, it is determined that the support inclination angle is reduced to a corresponding value by the first preset inclination adjustment coefficient. If the difference is greater than the preset difference, it is determined that the support inclination angle is reduced to a corresponding value by the second preset inclination adjustment coefficient. 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.

[0052] In the embodiment of the application, the preset difference is 0.35, but the above-mentioned value is not limited thereto, and the value can be adjusted according to actual needs by those skilled in the art.

[0053] In the embodiment of the present application, the reduced support inclination is the product of the support inclination and a preset inclination adjustment coefficient, the preset inclination adjustment coefficient includes a first preset inclination adjustment coefficient with a value of 0.9 and a second preset inclination adjustment coefficient with a value of 0.8, in order to ensure that the adjusted support inclination meets the actual demand, the adjustment range should not be too large, so the adjustment coefficient is correspondingly set to control the adjustment range.

[0054] Specifically, the present application judges whether the influence of construction on the surrounding environment meets the standard through the deep foundation pit construction disturbance index, if not, the support inclination is reduced by different preset inclination adjustment coefficients according to the difference between the deep foundation pit construction disturbance index and the preset difference, the calculation of the deep foundation pit construction disturbance index can timely detect the potential threat of construction to the surrounding environment, avoid the problems of surrounding building damage, abnormal underground water level and the like caused by excessive construction disturbance, ensure the stability of the surrounding environment, improve the accuracy and reliability of construction control, and realize the coordinated development of construction and environmental protection.

[0055] So far, the technical solution of the present application has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical solutions after the changes or replacements will fall within the protection scope of the present application.

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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