Steel sheet pile double-layer limiting pulley guide control construction method

Abstract

The invention discloses a steel sheet pile double-layer limiting pulley guide control construction method. The method comprises the following steps of data collection and initial parameter setting, real-time monitoring and deviation detection, track deviation operation and calibration parameter generation, calibration parameter application and track correction, correction result verification and parameter updating. According to the steel sheet pile double-layer limiting pulley guiding control construction method, through data collection and initial parameter setting, key data in the steel sheet pile construction process are comprehensively collected, including displacement, inclination angle, traction force, soil reaction force and the like, and corresponding threshold values and standard values are set to form an initial parameter set; a precise data basis is provided for subsequent construction, abnormal conditions in the construction process can be found in time through real-time monitoring and deviation detection, so that construction parameters are always in a controllable range, and required adjustment amount is precisely calculated according to monitoring data in track deviation operation and calibration parameter generation, so that a calibration parameter set is formed.

Description

Technical Field

[0001] The present invention relates to the technical field of steel sheet pile construction, in particular to a steel sheet pile double-layer limiting pulley guide control construction method. Background Art

[0002] The field of steel sheet pile construction technology encompasses a widely used pile foundation construction method. Its core focus is on utilizing steel sheet piles as temporary or permanent support structures to achieve soil stability and groundwater control during foundation pit excavation. This technical field typically involves multiple construction stages, including steel sheet pile design, driving, closing, and removal. The accuracy of these stages is directly related to the overall stability and construction efficiency of the steel sheet pile wall. Traditional steel sheet pile driving often presents difficulties in vertically inserting the steel sheet piles into the intended position due to complex soil conditions, limited precision of construction equipment, and operator variability. This in turn impacts subsequent construction progress and project quality.

[0003] Among them, the double-layer limited pulley guide control construction method for steel sheet piles refers to an improvement proposed to address the insufficient vertical control of traditional steel sheet pile driving. This method covers the setting of the double-layer pulley group and the coordination of the limiting device. Specifically, by arranging two sets of upper and lower pulleys between the lifting system and the guide frame of the driving machine, and coordinating the combination of limiting pins and guide grooves, double-layer guide control is achieved during the driving process of steel sheet piles. The main contents include the precise matching of pulley diameter and spacing, the elastic locking mechanism of the limiting pins, and the slope design of the guide groove. The parameters are adjusted according to the soil hardness distribution and the cross-sectional size of the steel sheet pile at the construction site to ensure that the steel sheet pile always sinks vertically along the predetermined trajectory and remains stable during the driving process.

[0004] Existing technologies for steel sheet pile driving have several shortcomings. First, traditional methods struggle to adapt to complex and variable soil conditions, making it difficult to insert steel sheet piles vertically into their intended locations. Due to uneven soil hardness, steel sheet piles are prone to tilting or shifting during driving, affecting construction accuracy. Furthermore, the precision limitations of construction equipment are a concern. Existing equipment may not provide sufficient control accuracy, making it difficult to ensure verticality during steel sheet pile driving. Furthermore, differences in operator performance can affect construction results. Different operators may employ different methods, resulting in inconsistent results. Summary of the Invention

[0005] The main purpose of the present invention is to provide a double-layer limited pulley guide control construction method for steel sheet piles, which can effectively solve the problems of difficulty in vertically inserting steel sheet piles into predetermined positions due to complex soil conditions, equipment accuracy limitations affecting verticality, and inconsistent construction results caused by differences in operator operations.

[0006] To achieve the above object, the technical solution adopted by the present invention is: a steel sheet pile double-layer limit pulley guide control construction method, the method comprising the following steps: S1. Data Collection and Initial Parameter Setting: Collect displacement data of the top of the steel sheet pile and key positions of the pulley block, inclination angle data of the side of the steel sheet pile, traction force data of the pulley block, and soil reaction force data in the construction area. Set the displacement rate threshold, inclination angle standard value, and traction force standard value to form an initial parameter set. S2. Real-time monitoring and deviation detection: Based on the initial parameter set, the displacement rate, tilt angle, and traction force during the steel sheet pile driving process are monitored in real time. The monitored data are compared with corresponding thresholds or standard values ​​to determine whether they exceed the range and generate deviation detection results. S3. Trajectory deviation calculation and calibration parameter generation: The deviation detection results are called to calculate the displacement rate deviation value, the tilt angle deviation value, and the traction force deviation value. Combined with the soil reaction force data, the pulley block traction angle adjustment value and the limit device position adjustment value are determined to form a calibration parameter set. S4. Calibration parameter application and trajectory correction: Based on the calibration parameter set, adjust the traction angle of the pulley block and the position of the limit device, monitor the adjusted displacement rate, tilt angle and traction force in real time, and generate a corrected trajectory status report; S5. Correction result verification and parameter update: Compare the corrected trajectory status report with the initial parameter set to verify the trajectory correction accuracy. Update the displacement rate threshold, tilt angle standard value, and traction force standard value in the initial parameter set based on the verification results to form a parameter update record.

[0007] Preferably, in the data collection and initial parameter setting steps, a high-precision displacement sensor is used to collect displacement data, an inclination angle sensor is used to collect inclination angle data, a force sensor is used to collect traction force data, and a pressure sensor is used to collect soil reaction force data.

[0008] Preferably, in the real-time monitoring and deviation detection step, a numerical comparison method is used to determine whether the monitoring data exceeds the corresponding threshold value or standard value range.

[0009] Preferably, in the trajectory deviation calculation and calibration parameter generation step, the pulley block traction angle adjustment amount and the limit device position adjustment amount are determined according to preset correction rules, and the preset correction rules are established based on soil mechanics principles and construction experience.

[0010] Preferably, the calibration parameters are applied in the trajectory correction step, the traction angle of the pulley block is adjusted by the hydraulic system, and the position of the limit device is adjusted by the mechanical transmission system.

[0011] Preferably, in the correction result verification and parameter updating steps, an error analysis method is used to evaluate the trajectory correction accuracy.

[0012] Preferably, in the correction result verification and parameter updating step, a data updating algorithm is used to update the displacement rate threshold, the tilt angle standard value and the traction force standard value in the initial parameter set.

[0013] Preferably, in the trajectory deviation calculation and calibration parameter generation steps, the preset correction rules are adjusted according to different construction environments and steel sheet pile specifications.

[0014] Preferably, in the calibration parameter application and trajectory correction step, the frequency of real-time monitoring of the adjusted displacement rate, tilt angle and traction force is the same as the monitoring frequency in the real-time monitoring and deviation detection step.

[0015] Preferably, in the data collection and initial parameter setting steps, the displacement rate threshold, the inclination angle standard value and the traction force standard value are set according to the design requirements and construction experience of the steel sheet pile.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the method comprehensively collects key data in the steel sheet pile construction process, including displacement, inclination angle, traction force and soil reaction force, through data acquisition and initial parameter setting, and sets corresponding thresholds and standard values ​​to form an initial parameter set, providing an accurate data basis for subsequent construction. Real-time monitoring and deviation detection can promptly detect abnormal conditions in the construction process, so that the construction parameters are always within the controllable range. Trajectory deviation calculation and calibration parameter generation accurately calculate the required adjustment amount based on the monitoring data to form a calibration parameter set.

[0017] 2. In the present invention, the method applies calibration parameters and trajectory correction, performs adjustments based on the calibration parameter set, monitors the adjusted data in real time, and generates a revised trajectory status report. Correction result verification and parameter updating dynamically update the initial parameter set by verifying the correction results to adapt to changes in the construction site, achieving refined control of the steel sheet pile driving process and improving construction accuracy and adaptability.

[0018] 3. In the present invention, the method can timely detect and correct deviations in the construction process through real-time monitoring and dynamic adjustment, reduce construction risks caused by accumulated deviations, and parameterized setting and updating make the construction process more controllable. It can be flexibly adjusted according to different construction conditions and environments, thereby improving the quality and efficiency of steel sheet pile construction, reducing construction costs and risks, and ensuring the safety and stability of construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a flow chart of the steel sheet pile double-layer limiting pulley guide control construction method of the present invention. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention will be described below in conjunction with specific implementation methods.

[0021] Example 1: Application in coastal port projects During the implementation process, for example, in a coastal port construction project, faced with the challenge of soft soil foundation, in order to improve the accuracy and stability of the steel sheet pile retaining structure construction, a steel sheet pile double-layer limited pulley guide control construction method was adopted.

[0022] By installing high-precision displacement sensors, tilt angle sensors, force sensors and pressure sensors on the top of the steel sheet pile and at key positions of the pulley block, the displacement rate ( ), tilt angle ( ), traction force ( ) and soil reaction force ( ) and other data. According to the design requirements of the steel sheet pile and past construction experience, the displacement rate threshold is set ( ) is 2cm / h, the standard value of the tilt angle ( ) is 3°, the standard value of traction force ( ) is 50kN, forming the initial parameter set.

[0023] During the real-time monitoring process, the displacement rate, inclination angle and traction force data during the steel sheet pile driving process are collected at a frequency of once per minute.

[0024] The collected data is compared with the initially set threshold or standard value through the numerical comparison method.

[0025] For example, if the displacement rate collected at a certain moment is 2.5cm / h, which exceeds the set displacement rate threshold of 2cm / h, the data is immediately determined to be out of range and a deviation detection result is formed. Similarly, if the collected tilt angle is 3.5°, which exceeds the set standard value of 3°, or the traction force reaches 55kN, which exceeds the standard value of 50kN, these deviations will also be recorded.

[0026] According to the deviation detection results, calculate the displacement rate deviation value ( )、Tilt angle deviation value( ) and traction force deviation value ( ).

[0027] Assume that in a certain monitoring period, the collected data is: displacement rate cm / h, tilt angle , traction force kN. Then we can calculate: Displacement rate deviation: cm / h; Tilt angle deviation value: ; Traction force deviation value: kN; Combined with the soil reaction force data (assuming kN), and determine the pulley block traction angle adjustment amount according to the preset correction rule ( ) and the limit device position adjustment amount ( ). Among them, the correction rule formula is as follows, the coefficient , , , , , , , : Pulley block traction angle adjustment: ; Limit device position adjustment: ; The results show that the pulley block traction angle needs to be adjusted by 4.4° and the limit device position needs to be adjusted by 4.35cm. These two values ​​provide a direct basis for the subsequent adjustment of the pulley block traction angle and the limit device position, thereby improving the accuracy and stability of steel sheet pile driving. The traction angle of the pulley block can be adjusted by the hydraulic system ( ), adjust the position of the limit device through the mechanical transmission system ( ), during the adjustment process, the adjusted displacement rate, tilt angle and traction force are monitored in real time, and a corrected trajectory status report is generated.

[0028] The error analysis method is used to verify the corrected trajectory status report. If the corrected displacement rate ( ), tilt angle ( ) and traction force ( ) are within the set error range, the trajectory correction accuracy is considered to meet the requirements, and the displacement rate threshold in the initial parameter set is updated according to the verification results ( )、Standard value of tilt angle( ) and the standard value of traction force ( ), forming a parameter update record.

[0029] This embodiment effectively improves the accuracy and stability of steel sheet pile driving through real-time monitoring and precise adjustment, reduces displacement and tilt problems caused by soft soil foundations, and improves the construction quality of steel sheet pile retaining structures in coastal port projects. At the same time, through parameter updating and optimization, it improves the efficiency and reliability of subsequent construction, reduces construction risks, and has significant economic and social benefits.

[0030] Example 2: Application in urban underground parking projects During the implementation process, for example, in urban underground parking lot construction projects, in view of the characteristics of small site and dense surrounding buildings, a double-layer steel sheet pile limited pulley guide control construction method is adopted, and high-precision displacement sensors, tilt angle sensors, force sensors and pressure sensors are installed. Combined with the design requirements of the underground parking lot and the geological characteristics of the site, the displacement rate threshold is set at 1.5cm / h, the standard tilt angle value is 2.5°, and the standard traction force value is 45kN to form an initial parameter set.

[0031] During the construction process, data is collected every 30 seconds to improve the ability to capture any changes in the steel sheet pile insertion process in a timely manner. Assume that the data collected at a certain moment is: displacement rate cm / h, tilt angle , traction force kN, soil reaction force kN, calculated as: Displacement rate deviation: cm / h; Tilt angle deviation value: ; Traction force deviation value: kN; The same correction rule formula as in Example 1 is used, with the coefficient , , , , , , , : Pulley block traction angle adjustment: ; Limit device position adjustment: ; The results show that the pulley block traction angle needs to be adjusted by 3.31°, and the limit device position needs to be adjusted by 5.78cm. These two values ​​provide a direct basis for the subsequent adjustment of the pulley block traction angle and the limit device position, thereby improving the accuracy and stability of steel sheet pile driving. Through the hydraulic system and mechanical transmission system, the pulley block traction angle and the limit device position are adjusted according to the calculated adjustment amount. After the adjustment, the relevant data are continuously monitored in real time to ensure that the adjusted steel sheet pile driving trajectory meets the design requirements, generate a reliable corrected trajectory status report, verify the correction results, and update the initial parameter set to form a parameter update record.

[0032] This embodiment effectively controls the displacement and tilt of steel sheet piles during the driving process through precise real-time monitoring and timely adjustment, avoiding construction risks caused by narrow site and dense surrounding buildings. Construction results show that this method significantly improves the construction accuracy and stability of the steel sheet pile support structure, protects the safety of surrounding buildings, shortens the construction period, reduces construction costs, and has good economic and social benefits.

[0033] Example 3: Application in bridge foundation construction projects During the implementation process, for example, in a certain bridge foundation construction project, faced with the complex hydrogeological conditions in the river and the potential impact of water flow on the stability of steel sheet piles, a double-layer limited pulley guide control construction method for steel sheet piles was used. High-precision displacement sensors were installed on the top of the steel sheet piles and key positions of the pulley group, inclination angle sensors were installed on the sides of the steel sheet piles, force sensors were installed at the traction part of the pulley group, and pressure sensors were buried in the riverbed soil. Combined with the design requirements of the bridge foundation and the hydrogeological characteristics of the river, the displacement rate threshold was set to 3 cm / h, the standard inclination angle value was 4°, and the standard traction force value was 60 kN to form an initial parameter set.

[0034] Considering the complex and changing construction environment, the data collection frequency is increased to once every 20 seconds. Assuming that the data collected at a certain moment is: displacement rate cm / h, tilt angle , traction force kN, soil reaction force kN, calculated as: Displacement rate deviation: cm / h; Tilt angle deviation value: ; Traction force deviation value: kN; The same correction rule formula as in Example 1 is used, with the coefficient , , , , , , , : Pulley block traction angle adjustment: ; Limit device position adjustment: ; The results indicate that the pulley block's traction angle needs to be adjusted by 4.14°, and the position of the stopper needs to be adjusted by 4.39cm. These two values ​​provide a direct basis for subsequent adjustments to the pulley block's traction angle and the position of the stopper, improving the accuracy and stability of steel sheet pile driving. The hydraulic system precisely adjusts the pulley block's traction angle, and the mechanical transmission system precisely adjusts the position of the stopper. During the adjustment process, relevant data is continuously monitored in real time to ensure that the adjusted steel sheet pile driving trajectory meets design requirements. An accurate report on the corrected trajectory status is generated, verifying the correction results and updating the initial parameter set, forming a parameter update record.

[0035] This embodiment effectively addresses the impact of complex river hydrogeological conditions on steel sheet pile construction through real-time monitoring and dynamic adjustment, improving the stability and accuracy of steel sheet piles under water impact. Construction results show that this method significantly improves the construction quality and safety of steel sheet pile cofferdams, ensuring smooth bridge foundation construction. Furthermore, through parameter optimization and updating, it improves construction efficiency and reduces construction costs, demonstrating excellent economic benefits and engineering application value.

[0036] Example 4: Application in industrial park plant foundation projects During implementation, for example, in a factory building foundation construction project in an industrial park, faced with complex and changing geological conditions and high construction quality requirements for the factory building foundation, a double-layer steel sheet pile limit pulley guide control construction method was implemented. High-precision displacement sensors were installed at the tops of the steel sheet piles and key locations on the pulley blocks. Inclination angle sensors were installed on the sides of the steel sheet piles, force sensors were installed at the pulley block traction points, and pressure sensors were buried in different geological layers within the construction area. Based on the factory building foundation design requirements and the industrial park's geological survey report, a displacement rate threshold of 2.5 cm / h, a standard inclination angle of 3.5°, and a standard traction force of 55 kN were set to form the initial parameter set.

[0037] During the construction process, the displacement rate, tilt angle and traction force data of the steel sheet pile driving process are collected every 45 seconds. Assuming that the data collected at a certain moment is: displacement rate cm / h, tilt angle , traction force kN, soil reaction force kN. Calculation yields: Displacement rate deviation: cm / h; Tilt angle deviation value: ; Traction force deviation value: kN; The same correction rule formula as in Example 1 is used, with the coefficient , , , , , , , : Pulley block traction angle adjustment: ; Limit device position adjustment: ; The results show that the pulley group traction angle needs to be adjusted by 4.54°, and the limit device position needs to be adjusted by 4.81cm. These two values ​​provide a direct basis for the subsequent adjustment of the pulley group traction angle and the limit device position, thereby improving the accuracy and stability of steel sheet pile driving. The hydraulic system accurately adjusts the pulley group traction angle, and the mechanical transmission system accurately adjusts the limit device position. The adjusted data is continuously monitored in real time to ensure that the adjusted steel sheet pile driving trajectory meets the design requirements. A reliable corrected trajectory status report is generated, the correction results are verified, and the initial parameter set is updated to form a parameter update record.

[0038] This embodiment effectively solves the displacement and tilt problems of steel sheet pile driving under complex geological conditions through real-time monitoring and precise adjustment, thereby improving the quality and safety of factory foundation construction. The construction results show that this method significantly improves the construction accuracy and stability of the steel sheet pile support structure, providing a solid foundation for subsequent construction. At the same time, through parameter optimization and updating, it improves construction efficiency and reduces construction costs, and has good economic benefits and broad application prospects.

[0039] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel sheet pile double-layer limit pulley guide control construction method, characterized in that: The method comprises the following steps: S1. Data Collection and Initial Parameter Setting: Collect displacement data of the top of the steel sheet pile and key positions of the pulley block, inclination angle data of the side of the steel sheet pile, traction force data of the pulley block, and soil reaction force data in the construction area. Set the displacement rate threshold, inclination angle standard value, and traction force standard value to form an initial parameter set. S2. Real-time monitoring and deviation detection: Based on the initial parameter set, the displacement rate, tilt angle, and traction force during the steel sheet pile driving process are monitored in real time. The monitored data are compared with corresponding thresholds or standard values ​​to determine whether they exceed the range and generate deviation detection results. S3. Trajectory deviation calculation and calibration parameter generation: The deviation detection results are called to calculate the displacement rate deviation value, the tilt angle deviation value, and the traction force deviation value. Combined with the soil reaction force data, the pulley block traction angle adjustment value and the limit device position adjustment value are determined to form a calibration parameter set. S4. Calibration parameter application and trajectory correction: Based on the calibration parameter set, adjust the traction angle of the pulley block and the position of the limit device, monitor the adjusted displacement rate, tilt angle and traction force in real time, and generate a corrected trajectory status report; S5. Correction result verification and parameter update: Compare the corrected trajectory status report with the initial parameter set to verify the trajectory correction accuracy. Update the displacement rate threshold, tilt angle standard value, and traction force standard value in the initial parameter set based on the verification results to form a parameter update record.

2. The steel sheet pile double-layer limiting pulley guide control construction method according to claim 1 is characterized in that: In the data collection and initial parameter setting steps, a high-precision displacement sensor is used to collect displacement data, an inclination angle sensor is used to collect inclination angle data, a force sensor is used to collect traction force data, and a pressure sensor is used to collect soil reaction force data.

3. The steel sheet pile double-layer limiting pulley guide control construction method according to claim 1 is characterized in that: In the real-time monitoring and deviation detection steps, a numerical comparison method is used to determine whether the monitoring data exceeds the corresponding threshold value or standard value range.

4. The steel sheet pile double-layer limiting pulley guide control construction method according to claim 1 is characterized in that: In the trajectory deviation calculation and calibration parameter generation step, the pulley block traction angle adjustment amount and the limit device position adjustment amount are determined according to a preset correction rule, and the preset correction rule is established based on soil mechanics principles and construction experience.

5. The steel sheet pile double-layer limiting pulley guide control construction method according to claim 1 is characterized in that: The calibration parameters are applied in the trajectory correction step, the traction angle of the pulley block is adjusted by the hydraulic system, and the position of the limit device is adjusted by the mechanical transmission system.

6. The steel sheet pile double-layer limiting pulley guide control construction method according to claim 1 is characterized in that: In the correction result verification and parameter updating steps, an error analysis method is used to evaluate the trajectory correction accuracy.

7. The steel sheet pile double-layer limiting pulley guide control construction method according to claim 1 is characterized in that: In the correction result verification and parameter updating step, a data updating algorithm is used to update the displacement rate threshold, the tilt angle standard value and the traction force standard value in the initial parameter set.

8. The steel sheet pile double-layer limiting pulley guide control construction method according to claim 1 is characterized in that: In the trajectory deviation calculation and calibration parameter generation steps, the preset correction rules are adjusted according to different construction environments and steel sheet pile specifications.

9. The steel sheet pile double-layer limiting pulley guide control construction method according to claim 1 is characterized in that: In the calibration parameter application and trajectory correction step, the frequency of real-time monitoring of the adjusted displacement rate, tilt angle and traction force is the same as the monitoring frequency in the real-time monitoring and deviation detection step.

10. The steel sheet pile double-layer limiting pulley guide control construction method according to claim 1 is characterized in that: In the data collection and initial parameter setting steps, the displacement rate threshold, the standard value of the inclination angle and the standard value of the traction force are set according to the design requirements and construction experience of the steel sheet pile.

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