Installation and construction process of water conservancy and hydropower engineering steel gate

Abstract

The invention relates to the technical field of gate installation, in particular to an installation construction technology of a water conservancy and hydropower engineering steel gate. A segmented butt joint mode and a reversible deformation clamp are adopted, staged construction is carried out on gate leaf welding, a formula is based on a thermoelastic-plastic theory, factors such as steel expansion and mechanical properties of a structure are caused by heat input in the welding process, and the factors interact in the welding deformation process, so that the welding deformation of the gate leaf is greatly improved. By adjusting parameters in the formula, the heat input quantity Q is controlled, and the efficiency mu of a reversible deformation clamp is utilized, so that in the construction process, the deformation quantity is adjusted, welding process parameters are optimized through the formula, the welding deformation quantity can be controlled within an allowable range, the welding quality of the gate leaf is improved, rework is reduced, and the production cost is reduced. And the deformation can be predicted and controlled in advance, so that the problem of reworking due to out-of-tolerance welding deformation is reduced, and the cost and the risk of construction period delay are reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of gate installation, in particular to a water conservancy and hydropower engineering steel gate installation construction process. BACKGROUND

[0002] The gate is a control facility for closing and opening a water discharge passage, and is an important component of a water conservancy structure, which can be used to intercept water flow, control water level, regulate flow, discharge sediment and floating objects, etc., and the manufacturing and installation precision of the gate should be strictly controlled. When the boundary flow state of the gate is complex, the existing gate sealing strip is simply fixed and wrapped on the outer side of the gate plate, and in the long-term up and down sliding and impact of water flow, the sealing strip is greatly worn or even falls off; In the prior art, a water conservancy and hydropower engineering steel gate installation construction process is disclosed in Chinese Patent No. CN118835570A, which includes the following steps: hoisting the steel gate for static balance detection, determining the hoisting point position adjustment of the steel gate according to the inclination of the hoisting point plane of the steel gate; detecting the curvature of the wall surface near the steel gate on one side of the gate pier and the annual water flow of the river where the steel gate is to be installed to determine the detection position of the wall surface; detecting the deformation of the water sealing belt and the water flow impact force of the steel gate to be installed, and determining the detection base point of the water sealing belt according to the water flow impact force and the deformation; determining the adjustment of the thickness of the water sealing belt according to the pressure of the water sealing belt under the corresponding base point; detecting the lifting stability of the steel gate, and determining the adjustment of the installation process of the steel gate according to the lifting stability; and improving the precision of the installation construction control of the water conservancy and hydropower engineering steel gate to improve the installation efficiency of the steel gate.

[0003] The inventor found that the prior art has the following problems in the process of implementing the application: During the construction of the gate, the construction area required for the construction of the gate may deviate from the construction area of the drawing due to geological reasons, and the foundation structure constructed according to the drawing may change, thereby directly affecting the assembly of the gate during the construction of the gate. SUMMARY

[0004] The application aims to provide a water conservancy and hydropower engineering steel gate installation construction process.

[0005] The water conservancy and hydropower engineering steel gate installation construction process provided by the application adopts the following technical solution, including the following steps: S1, construction preparation: in the construction preparation stage, high-precision topographic mapping and geological analysis of the construction area are carried out through geological exploration and BIM modeling, a three-dimensional model is generated, construction path conflict points are simulated, and an optimal construction path is planned; S2. Foundation construction: The foundation construction adopts high-pressure jet grouting pile composite foundation reinforcement technology. The jet grouting forms a pile-soil composite structure, which increases the foundation bearing capacity from 80kPa to 150kPa and reduces the settlement from 12cm to 3.2cm. S3. Embedded parts installation: Embedded parts installation uses a laser tracker + steel positioning frame combined positioning technology, and the error synthesis model is used to control the position deviation of the bolt group; S4. Gate main body construction: After the gate leaves are assembled, the water stop system is installed on the construction foundation, and the hoist is assembled at the end specified in the drawing to cooperate with the gate; S5. Acceptance and debugging: During the acceptance and debugging stage, the vibration spectrum of the gate is monitored by an acceleration sensor, and the damping ratio is optimized in combination with counterweight adjustment.

[0006] By adopting the above technical solution, before installing the gate, the BIM building model is iteratively scanned, and the conflict detection probability exponentially approaches 1, so as to obtain the completed construction drawings of the gate, detect the foundation on which the gate is installed, and confirm that when the gate is installed, its foundation will not deviate from the data required for the installation of the gate due to geological influences. Then, foundation construction is carried out, and the high-pressure rotary jet pile composite foundation reinforcement technology is used to prompt the bearing capacity of the foundation to solve the foundation sedimentation problem caused by geological problems during the construction process. Then, the embedded parts are installed. During the construction process, a laser tracker is used in combination with a steel positioning frame to confirm that the deviation caused by the assembly position of the bolts is within the budget value. At this time, the main body of the gate is constructed. At this time, the construction personnel assemble the leaf gates, install the water-stop system in conjunction with the door leaves, and inspect the water-stop system. Then, the gate opening and closing machine is assembled to complete the construction of the gate.

[0007] The construction personnel conduct geological exploration, and then submit a geological report. The designer designs the drawings according to the geological report and performs a BIM modeling conflict check. When there is no corresponding conflict in the drawings, the foundation construction is carried out. When the BIM modeling conflict check is performed, when there is a corresponding conflict in the drawings, the drawings are revised. According to the BIM modeling conflict check behavior, the BIM modeling conflict is calculated by the following formula: A scan The proportion of the design area covered by a single model scan; A total is the total design area, n is the number of scanning iterations; Then, based on the geological report, geological radar data is selected. When the thickness of the weak geological interlayer is greater than 3m, PHC pile foundation reinforcement is used. When the thickness of the weak geological interlayer is less than 3m, crushed stone replacement is used. The foundation bearing capacity report is obtained and the design institute will conduct drawing design.

[0008] By adopting the above technical solution, the conflict probability in the design is detected by quantifying multiple scans of the BIM model, so that the conflicts can be resolved in each optimization. In addition, because traditional manual inspection relies on experience and is prone to missing hidden conflicts, the BIM model is used to repeatedly scan the construction area to resolve the deviations caused by manual calibration.

[0009] In S2, based on the geological radar data obtained by S1 through geological exploration, when the thickness of the weak interlayer is greater than 3m, PHC pile foundation reinforcement is adopted and a geological bearing capacity report is obtained. When the thickness of the weak interlayer is less than 3m, crushed stone replacement is adopted and a geological bearing capacity report is obtained.

[0010] According to the exploration behavior of geological exploration, the distribution of weak layers identified by geological radar is calculated by the following formula: E: electric field strength; μ: dielectric permeability, ∈: dielectric constant, θ: conductivity According to the exploration behavior of geological prospecting, the distribution of boreholes identified by geological radar is calculated by the following formula: λ i : Weight coefficient, determined by the variation function γ(h); According to the geological radar report, the weak interlayer is greater than 3m. The PHC pile composite foundation is calculated by the following formula: spk =m·f pk +(1-m)·f sk ; Replacement rate, f pk : Single pile bearing capacity, f sk : bearing capacity of soil between piles; According to the geological radar report, the weak interlayer reported by the geological radar is less than 3m, and the gravel replacement correction is calculated by the following formula: a =f ak +η d γ m (d-0.5) γ m = gravel weight, d: replacement thickness According to the geological radar report, the settlement after foundation reinforcement is quantified and calculated by the following formula: σ zi =γ hi +Δσ(additional stress), E si : compression modulus; According to the geological radar report, the settlement is calculated based on the time effect using the following formula: S t =S ∞U(t) That: By adopting the above technical solution, geological data is obtained according to the geological radar data report, and PHC pile foundation reinforcement or gravel replacement is selected based on the geological data.

[0011] In S3, the construction position of the embedded parts is measured and positioned at the construction end, the position of the embedded parts is located by a laser tracker, and the embedded parts and the formwork are assembled. When the offset of the embedded parts is greater than 3mm, the steel positioning frame is assembled, the formwork is reassembled, and concrete is poured, and the formwork is removed and calibrated. When the offset is less than 3mm, concrete is poured, and the formwork is removed and calibrated.

[0012] The construction workers hoist the components of the door leaf, assemble, weld and connect them into a whole at the installation location. During the welding construction, flaw detection is carried out in stages to obtain the welding quality of the welding position. When the flaw detection deviation is less than 3mm, the water stop system is installed. When the flaw detection deviation is greater than 3mm, the segmented docking method is adopted, and an anti-deformation fixture is installed on the door leaf for re-welding. According to the welding deformation behavior of the leaf door assembly, the welding deformation of the leaf door assembly is calculated by the following formula: α is the thermal expansion coefficient of the material, Q is the input amount of segmented desoldering; L is the leaf length, I is the section moment of inertia, and μ is the anti-deformation fixture efficiency.

[0013] By adopting the above technical solution, and in the process of constructing the door leaf, a segmented docking method is adopted with an anti-deformation fixture, and the welding of the door leaf is carried out in stages. Because the formula is based on the thermo-elasto-plastic theory, in which the heat input during welding causes the expansion of the steel and the mechanical properties of the structure, and these factors interact with each other during the welding deformation process, the parameters in the formula are adjusted to control the heat input Q and the efficiency μ of the anti-deformation fixture, so that during the construction process, the deformation amount is adjusted and the welding process parameters are optimized through the formula, and the welding deformation amount can be controlled within the allowable range, thereby improving the welding quality of the door leaf.

[0014] When constructing the waterstop system, the construction personnel locate the construction position of the gate waterstop, construct the waterstop by hot-melt welding, and perform pressure testing on the hot-melt welding position of the waterstop. When the water seepage of the waterstop is less than 5L, the gate opening and closing machine is installed. When the water seepage of the waterstop is greater than 5L, the infrared thermal imaging is used to detect the seepage level. According to the water seepage behavior of the waterstop, the leakage of the waterstop is calculated by the following formula: P = 1-e -λ·ΔT·t ; λ is the difference coefficient of thermal conductivity between the water stop and the defect, ΔT is the temperature difference between the leakage point and the surrounding area; T is the number of infrared scans.

[0015] By adopting the above technical solution, the formula can be used to calculate the probability P of detecting a waterstop weld leakage defect through infrared thermal imaging based on the thermal conductivity difference coefficient λ between the waterstop and the defect, the temperature difference ΔT between the leakage point and the surrounding area, and the number of infrared scans t. By adjusting the parameters in the formula, increasing the number of scans t or improving the detection sensitivity of the temperature difference ΔT, the probability of leakage detection can be improved, thereby optimizing the detection scheme.

[0016] When the gate hoist is installed, the installation position is leveled, and the screw calibration is used to confirm the flatness of the gate hoist installation. At this time, the screw calibration is linked and debugged. When the deviation is less than or equal to 50mm, the entire completed construction is inspected and debugged. When the deviation is greater than or equal to 50mm, the laser centering instrument and PLC synchronous control system are used to re-calibrate the screw. According to the gate hoist installation behavior, the deviation of the gate hoist is calculated by the following formula:

[0017] K P is the proportionality coefficient, K i is the integration coefficient, k d is the differential coefficient; ∈(t) is the real-time position deviation.

[0018] By adopting the above technical solution, the formula is converted into P , integral coefficient K i , differential coefficient k d And the parameters of the real-time position deviation ∈(t), calculate the synchronization error e(t) of the double lifting points of the gate hoist, and adjust the K in the formula P , K i and k d The coefficient can be used to optimize the synchronous control strategy of the gate hoist to reduce the synchronization error.

[0019] In S5, after the construction is completed, acceptance and debugging are carried out. First, a no-load test is carried out, followed by a static load test, and finally a dynamic load test. The combined data of the three experiments are used to confirm that the amplitude generated by the gate is less than 0.15mm. The test is completed. When the amplitude generated by the gate is greater than 0.15mm, the test is repeated and monitored with an acceleration sensor. The counterweight is adjusted and the counterweight is adjusted until the amplitude is less than 0.15mm. According to the experimental report, the offset of the gate is calculated by the following formula: f n : natural frequency of the original system; According to the experimental report, the damping ratio of the counterweight is calculated by the following formula: ζ: damping ratio; The no-load test, static load test and dynamic load test for the acceptance and commissioning were repeated three times, and the amplitude of the three experiments was less than 0.15mm (±1mm).

[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. Greatly improved the installation accuracy of steel gates, reduced errors caused by human factors, and ensured project quality; 2. Through iterative scanning of the BIM building model, the conflict detection probability exponentially approaches 1, so as to obtain the completed construction drawings of the gate, inspect the foundation on which the gate is installed, and confirm that the foundation will not deviate from the data required for the gate installation due to geological influences during the gate installation. Then, foundation construction is carried out. High-pressure rotary jet pile composite foundation reinforcement technology is used to prompt the bearing capacity of the foundation to solve the foundation sedimentation problem caused by geological problems during the construction process. Then, embedded parts are installed. During the construction process, a laser tracker is used in combination with a steel positioning frame to confirm that the deviation caused by the assembly position of the bolts is within the budget value. At this time, the main gate construction is carried out. At this time, the construction personnel assemble the leaf gates and install the water stop system in conjunction with the door leaves. The water stop system is inspected and then the hoist is assembled to complete the gate construction. 3. And in the process of constructing the door leaf, the segmented docking method and the anti-deformation fixture are used to carry out staged construction of the door leaf welding. Because the formula is based on the thermo-elasto-plastic theory, the heat input in the welding process causes the expansion of the steel and the mechanical properties of the structure, and these factors interact with each other in the welding deformation process. By adjusting the parameters in the formula, the heat input Q and the efficiency μ of the anti-deformation fixture are controlled. Therefore, in the process of construction, the deformation is adjusted and the welding process parameters are optimized through the formula. The welding deformation can be controlled within the allowable range, thereby improving the welding quality of the door leaf and reducing rework. Since the deformation can be predicted and controlled in advance, the problem of rework due to excessive welding deformation is reduced, reducing the cost and the risk of delays in construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a workflow diagram of the gate installation construction process according to an embodiment of the present application; Figure 2 This is a workflow diagram for construction preparation of an embodiment of the present application; Figure 3 This is a workflow diagram of the geological radar verification of the foundation bearing capacity report in an embodiment of the present application; Figure 4 This is a workflow diagram for the embedded parts construction of the embodiment of the present application Figure 5This is a workflow diagram for gate main body construction according to an embodiment of the present application; Figure 6 This is a workflow diagram for assembling door leaves according to an embodiment of the present application; Figure 7 This is a workflow diagram for installing a water-stopping system according to an embodiment of the present application; Figure 8 This is a workflow diagram for the installation of the gate hoist according to the embodiment of the present application. Figure 9 This is a workflow diagram for the acceptance and debugging of an embodiment of the present application; DETAILED DESCRIPTION

[0022] The following is combined with Figure 1 - Attachment Figure 9 , further details of this application are given.

[0023] Example: A construction process for installing a steel gate for a water conservancy and hydropower project, including construction preparation and gate main body construction: S1. Construction preparation: During the construction preparation stage, high-precision topographic mapping and geological analysis of the construction area are performed through geological exploration and BIM modeling to generate a three-dimensional model, simulate construction path conflict points, and plan the optimal construction path; S2. Foundation construction: The foundation construction adopts high-pressure jet grouting pile composite foundation reinforcement technology. The jet grouting forms a pile-soil composite structure, which increases the foundation bearing capacity from 80kPa to 150kPa and reduces the settlement from 12cm to 3.2cm. S3. Embedded parts installation: Embedded parts installation uses a laser tracker + steel positioning frame combined positioning technology, and the error synthesis model is used to control the position deviation of the bolt group; S4. Gate main body construction: After the gate leaves are assembled, the water stop system is installed on the construction foundation, and the hoist is assembled at the end specified in the drawing to cooperate with the gate; S5. Acceptance and debugging: During the acceptance and debugging stage, the vibration spectrum of the gate is monitored by an acceleration sensor, and the damping ratio is optimized in combination with counterweight adjustment.

[0024] Before installing the gate, the BIM building model is iteratively scanned, and the conflict detection probability exponentially approaches 1 to obtain the completed construction drawings of the gate. The foundation on which the gate is installed is inspected, and it is confirmed that when the gate is installed, its foundation will not deviate from the data required for the installation of the gate due to geological influences. Then the foundation construction is carried out, and the high-pressure rotary jet pile composite foundation reinforcement technology is used to prompt the bearing capacity of the foundation to solve the foundation sedimentation problem caused by geological problems during the construction process. Then the embedded parts are installed. During the construction process, a laser tracker is used in combination with a steel positioning frame to confirm that the deviation caused by the assembly position of the bolts is within the budget value. At this time, the main body of the gate is constructed. At this time, the construction personnel assemble the leaf gates, install the water-stop system in conjunction with the door leaves, and inspect the water-stop system. Then the gate opening and closing machine is assembled to complete the construction of the gate.

[0025] The construction personnel will conduct geological surveys and submit geological reports. The designers will design drawings based on the geological reports and conduct BIM modeling conflict checks. If there are no corresponding conflicts in the drawings, the foundation construction will be carried out. If there are corresponding conflicts in the drawings, the drawings will be revised. According to the BIM modeling conflict check behavior, the BIM modeling conflict is calculated by the following formula: A scan The proportion of the design area covered by a single model scan; A total is the total design area, n is the number of scanning iterations; Then, based on the geological report, geological radar data is selected. When the thickness of the weak geological interlayer is greater than 3m, PHC pile foundation reinforcement is used. When the thickness of the weak geological interlayer is less than 3m, crushed stone replacement is used. The foundation bearing capacity report is obtained and the design institute will conduct drawing design.

[0026] By quantifying the probability of conflicts in the design through multiple scans of the BIM model, conflicts can be resolved in each optimization. Because traditional manual inspections rely on experience and are prone to missing hidden conflicts, the BIM model is used to repeatedly scan the construction area to resolve deviations caused by manual calibration.

[0027] In S2, based on the geological radar data obtained by S1 through geological exploration, when the thickness of the weak interlayer is greater than 3m, PHC pile foundation reinforcement is adopted and a geological bearing capacity report is obtained. When the thickness of the weak interlayer is less than 3m, crushed stone replacement is adopted and a geological bearing capacity report is obtained.

[0028] According to the exploration behavior of geological exploration, the distribution of weak layers identified by geological radar is calculated by the following formula: E: electric field strength; μ: dielectric permeability, ∈: dielectric constant, θ: conductivity According to the exploration behavior of geological prospecting, the distribution of boreholes identified by geological radar is calculated by the following formula: λ i : Weight coefficient, determined by the variation function γ(h); According to the geological radar report, the weak interlayer is greater than 3m. The PHC pile composite foundation is calculated by the following formula: spk =m·f pk +(1-m)·f sk ; Replacement rate, f pk : Single pile bearing capacity, f sk : bearing capacity of soil between piles; According to the geological radar report, the weak interlayer is less than 3m, and the gravel replacement correction is calculated by the following formula: a =f ak +η d γ m (d-0.5) γ m = gravel weight, d: replacement thickness Based on the geological radar report, the settlement after foundation reinforcement was quantified and calculated using the following formula: σ zi =γ hi +Δσ(additional stress), E si : compression modulus; According to the geological radar report, the settlement is calculated based on the time effect using the following formula: S t =S ∞ U(t) That: According to the geological radar data report, geological data is obtained, and PHC pile foundation reinforcement or gravel replacement is selected based on the geological data. The geological radar report can obtain the original geological structure in the early stage of construction. The original structure can be used to simulate the problems of uneven foundation settlement or insufficient concrete strength of piers that may occur during subsequent construction. Therefore, the geological radar is used to identify weak interlayers or voids within 3m underground, and PHC pipe piles or replacement reinforcement are selected in a targeted manner to stabilize the stability of the construction foundation.

[0029] In S3, the construction position of the embedded parts is measured and positioned at the construction end. The embedded parts are located using a laser tracker, and the embedded parts and formwork are assembled. When the embedded parts deviate by more than 3mm, a steel positioning frame is assembled, the formwork is reassembled, concrete is poured, and formwork calibration is performed. When the deviate is less than 3mm, concrete is poured, and formwork calibration is performed. The construction personnel hoist the door leaf components, assemble, weld, and connect them into a whole at the installation location. During welding construction, flaw detection is performed periodically to obtain the welding quality of the welding position. When the flaw detection deviation is less than 3mm, the water stop system is installed. When the flaw detection deviation is greater than 3mm, the segmented docking method is adopted, and an anti-deformation fixture is installed on the door leaf, and re-welding is performed. According to the deformation behavior of leaf door assembly welding, the initial welding deformation of leaf door assembly is calculated by the following formula: α is the thermal expansion coefficient of the material, Q is the input amount of segmented desoldering; L is the leaf length, I is the section moment of inertia, and μ is the anti-deformation fixture efficiency.

[0030] And in the process of constructing the door leaf, the segmented docking method and the anti-deformation fixture are used to carry out staged construction of the door leaf welding. Because the formula is based on the thermo-elasto-plastic theory, the heat input in the welding process causes the expansion of the steel and the mechanical properties of the structure, and these factors interact with each other in the welding deformation process. By adjusting the parameters in the formula, the heat input Q and the efficiency μ of the anti-deformation fixture are controlled. Therefore, in the process of construction, the deformation is adjusted and the welding process parameters are optimized through the formula. The welding deformation can be controlled within the allowable range, thereby improving the welding quality of the door leaf and reducing rework. Since the deformation can be predicted and controlled in advance, the problem of rework due to excessive welding deformation is reduced, and the risk of cost and construction delay is reduced.

[0031] When constructing the waterstop system, the construction personnel will locate the construction position of the gate waterstop, construct the waterstop by hot-melt welding, and perform pressure test on the hot-melt welding position of the waterstop. When the waterstop seepage is less than 5L, the gate hoist will be installed. When the waterstop seepage is greater than 5L, the infrared thermal imaging will be used to detect the seepage level. According to the waterstop seepage behavior, the leakage of the waterstop is calculated by the following formula: P = 1-e -λ·ΔT·t ; λ is the difference coefficient of thermal conductivity between the water stop and the defect, ΔT is the temperature difference between the leakage point and the surrounding area; T is the number of infrared scans.

[0032] The formula can be used to calculate the probability P of detecting a waterstop weld leakage defect through infrared thermal imaging based on the thermal conductivity difference coefficient λ· between the waterstop and the defect, the temperature difference ΔT between the leakage point and the surrounding area, and the number of infrared scans t. By adjusting the parameters in the formula, increasing the number of scans t or improving the detection sensitivity of the temperature difference ΔT, the probability of leakage detection can be increased, thereby optimizing the detection plan. Infrared thermal imaging leakage detection utilizes the principle of heat conduction, that is, the temperature distribution around the leakage point is different from that in the normal area. This formula is based on the physical process of heat conduction, which quantifies the thermal conductivity difference, temperature difference and number of scans, thereby establishing a probability distribution method. A mathematical model of detection probability is established to adapt to actual detection needs, and in the leakage detection of the waterstop system, by considering the material properties of the waterstop, the thermal conductivity difference coefficient λ between the waterstop and the defect, the temperature difference ΔT between the leakage point and the surrounding area, and the number of infrared scans T, this formula can adapt to these actual detection needs and provide a basis for the formulation and evaluation of detection plans, thereby increasing the detection probability, more reliably detecting leakage defects of the waterstop, avoiding subsequent problems caused by undetected leakage, and optimizing resource allocation. The detection parameters can also be adjusted according to the formula, and detection resources can be reasonably arranged under the premise of ensuring the detection effect.

[0033] When installing the gate hoist, the installation position is leveled, and the screw calibration is used to confirm the flatness of the gate hoist installation. At this time, the screw calibration is linked and debugged. When the deviation is less than or equal to 50mm, the entire completed construction is inspected and debugged. When the deviation is greater than or equal to 50mm, the laser centering instrument and PLC synchronous control system are used to re-calibrate the screw. According to the gate hoist installation behavior, the deviation of the gate hoist is calculated by the following formula:

[0034] K P is the proportionality coefficient, K i is the integration coefficient, k d is the differential coefficient; ∈(t) is the real-time position deviation.

[0035] This formula is obtained by the proportionality factor K P , integral coefficient K i , differential coefficient k d And the parameters of the real-time position deviation ∈(t), calculate the synchronization error e(t) of the double lifting points of the gate hoist, and adjust the K in the formula P , K i and k d The coefficient can optimize the synchronous control strategy of the gate hoist to reduce the synchronization error. This formula is based on the PID control system theory. In the synchronous control of the gate hoist, the current position deviation K is comprehensively considered. P , the accumulated deviation K in the past iand the rate of change of the deviation k d To achieve precise control, and during the operation of the gate hoist, the synchronization of its double hanging points is affected by load changes and mechanical transmission. Using this formula can adapt to these changes by adjusting the PID coefficient according to the operating characteristics of the gate hoist, thereby achieving good synchronous control, and by optimizing the PID coefficient to reduce the synchronization error of the double hanging points of the gate hoist, to improve the synchronization accuracy of the gate hoist, ensure that the experimental operation data of the gate is maintained within the specified range, reduce the occurrence of rework, and precise synchronous control also reduces the mechanical stress and wear caused by asynchrony, which can extend the service life of the gate hoist and reduce the maintenance cost of the equipment.

[0036] In S5, after the construction is completed, acceptance and debugging are carried out. First, a no-load test is carried out, followed by a static load test, and finally a dynamic load test. The combined data of the three experiments are used to confirm that the amplitude generated by the gate is less than 0.15mm. The test is completed. When the amplitude generated by the gate is greater than 0.15mm, the test is repeated and monitored with an acceleration sensor. The counterweight is adjusted and the counterweight is adjusted until the amplitude is less than 0.15mm. According to the experimental report, the offset of the gate is calculated by the following formula, f n : natural frequency of the original system; According to the experimental report, the damping ratio of the counterweight is calculated by the following formula: ζ: damping ratio; The no-load, static load and dynamic load tests for acceptance and commissioning were repeated three times, and the amplitude of the three tests was less than 0.15mm (±1mm).

[0037] No-load tests, static load tests and dynamic load tests are carried out. Through step-by-step loading and multi-dimensional testing, it is ensured that the equipment can operate safely and then operate reliably in the long term. The no-load current, static load settlement curve and dynamic load spectrum left by the experiment can be used to obtain the operating data generated by the gate, providing a quantitative basis for the project handover, so that when adjusting the gate, it can be more convenient to adjust the gate so that the gate can operate stably.

[0038] The implementation principle of the embodiment of the present application is as follows: before installing the gate, the BIM building model is iteratively scanned, and the conflict detection probability exponentially approaches 1 to obtain the completed construction drawings of the gate, and the foundation on which the gate is installed is inspected, and it is confirmed that when the gate is installed, its foundation will not be affected by the geology, causing the data required for the installation of the gate to deviate. Then, foundation construction is carried out, and the high-pressure rotary jet pile composite foundation reinforcement technology is used to prompt the bearing capacity of the foundation to solve the foundation sedimentation problem caused by geological problems during the construction process. Then, the embedded parts are installed, and during the construction process, a laser tracker is used in combination with a steel positioning frame to confirm that the deviation caused by the assembly position of the bolt is within the budget value. At this time, the main body of the gate is constructed, and the construction personnel assemble the leaf gates, and install the water-stop system in conjunction with the door leaves, and inspect the water-stop system. Then, the hoist is assembled to complete the construction of the gate. By quantifying the probability of conflicts in the design through multiple scans of the BIM model, conflicts can be resolved in each optimization. Because traditional manual inspections rely on experience and are prone to missing hidden conflicts, the BIM model is used to repeatedly scan the construction area to resolve deviations caused by manual calibration. In the process of constructing the door leaf, a segmented docking method with an anti-deformation fixture is used, and the welding of the door leaf is carried out in stages. Because the formula is based on the thermo-elasto-plastic theory, in which the heat input during welding causes the expansion of the steel and the mechanical properties of the structure, and these factors interact with each other during the welding deformation process, the heat input Q and the efficiency μ of the anti-deformation fixture are controlled by adjusting the parameters in the formula. Thus, during the construction process, the deformation is adjusted and the welding process parameters are optimized through the formula. The welding deformation can be controlled within the allowable range, thereby improving the welding quality of the door leaf and reducing rework. Since the deformation can be predicted and controlled in advance, the problem of rework due to excessive welding deformation is reduced, reducing the cost and the risk of construction delays. The formula can be used to calculate the probability P of detecting a waterstop weld leakage defect through infrared thermal imaging based on the thermal conductivity difference coefficient λ· between the waterstop and the defect, the temperature difference ΔT between the leakage point and the surrounding area, and the number of infrared scans t. By adjusting the parameters in the formula, increasing the number of scans t or improving the detection sensitivity of the temperature difference ΔT, the probability of leakage detection can be increased, thereby optimizing the detection plan. Infrared thermal imaging leakage detection utilizes the principle of heat conduction, that is, the temperature distribution around the leakage point is different from that in the normal area. This formula is based on the physical process of heat conduction, quantifying the thermal conductivity difference, temperature difference and number of scans, thereby establishing A mathematical model of detection probability is developed to meet actual detection needs. In the leakage detection of the waterstop system, by considering the material properties of the waterstop, including the thermal conductivity difference coefficient λ between the waterstop and the defect, the temperature difference ΔT between the leakage point and the surrounding area, and the number of infrared scans T, this formula can adapt to these actual detection needs and provide a basis for the formulation and evaluation of detection plans. By improving the detection probability, leakage defects of the waterstop can be more reliably discovered, avoiding subsequent problems caused by undetected leakage, optimizing resource allocation, and adjusting detection parameters according to the formula. Under the premise of ensuring the detection effect, detection resources can be reasonably arranged. This formula is obtained by the proportionality factor K P , integral coefficient K i , differential coefficient k d And the parameters of the real-time position deviation ∈(t), calculate the synchronization error e(t) of the double lifting points of the gate hoist, and adjust the K in the formula P , K i and k d The coefficient can optimize the synchronous control strategy of the gate hoist to reduce the synchronization error. This formula is based on the PID control system theory. In the synchronous control of the gate hoist, the current position deviation K is comprehensively considered. P , the accumulated deviation K in the past i and the rate of change of the deviation k d To achieve precise control, and during the operation of the gate hoist, the synchronization of its double hanging points is affected by load changes and mechanical transmission. Using this formula can adapt to these changes by adjusting the PID coefficient according to the operating characteristics of the gate hoist, thereby achieving good synchronous control, and by optimizing the PID coefficient to reduce the synchronization error of the double hanging points of the gate hoist, to improve the synchronization accuracy of the gate hoist, ensure that the experimental operation data of the gate is maintained within the specified range, reduce the occurrence of rework, and precise synchronous control also reduces the mechanical stress and wear caused by asynchrony, which can extend the service life of the gate hoist and reduce the maintenance cost of the equipment.

[0039] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A construction process for installing a steel gate for a water conservancy and hydropower project, characterized by: The following steps are involved: S1. Construction Preparation: During the construction preparation phase, high-precision topographic mapping and geological analysis of the construction area are carried out through geological exploration and BIM modeling to generate a three-dimensional model, simulate conflict points of the construction path, and plan the optimal construction path; S2. Foundation construction: The foundation construction adopts high-pressure jet grouting pile composite foundation reinforcement technology. The jet grouting forms a pile-soil composite structure, which increases the foundation bearing capacity from 80kPa to 150kPa and reduces the settlement from 12cm to 3.2cm. S3. Embedded parts installation: Embedded parts installation uses a laser tracker + steel positioning frame combined positioning technology, and the error synthesis model is used to control the position deviation of the bolt group; S4. Gate main body construction: After the gate leaves are assembled, the water stop system is installed on the construction foundation, and the hoist is assembled at the end specified in the drawing to cooperate with the gate; S5. Acceptance and debugging: During the acceptance and debugging stage, the vibration spectrum of the gate is monitored by an acceleration sensor, and the damping ratio is optimized in combination with counterweight adjustment.

2. The installation and construction process of a steel gate for a water conservancy and hydropower project according to claim 1 is characterized by: In S1, the construction personnel conduct geological exploration and submit a geological report. The designer designs the drawings based on the geological report and performs a BIM modeling conflict check. If there is no corresponding conflict in the drawings, the foundation construction is carried out. If there is a corresponding conflict in the drawings, the drawings are corrected. According to the BIM modeling conflict check behavior, the BIM modeling conflict is calculated by the following formula: A scan The proportion of the design area covered by a single model scan; A total is the total design area, n is the number of scanning iterations; Then, based on the geological report, geological radar data is selected. When the thickness of the weak geological interlayer is greater than 3m, PHC pile foundation reinforcement is used. When the thickness of the weak geological interlayer is less than 3m, crushed stone replacement is used. The foundation bearing capacity report is obtained and the design institute will conduct drawing design.

3. The installation and construction process of a steel gate for a water conservancy and hydropower project according to claim 1 is characterized by: In S2, based on the geological radar data obtained by geological exploration in S1, when the thickness of the weak interlayer is greater than 3m, PHC pile foundation reinforcement is adopted and a geological bearing capacity report is obtained. When the thickness of the weak interlayer is less than 3m, crushed stone replacement is adopted and a geological bearing capacity report is obtained. According to the exploration behavior of geological exploration, the distribution of weak layers identified by geological radar is calculated by the following formula: E: electric field strength; μ: medium magnetic permeability, ∈: dielectric constant, θ: electrical conductivity; According to the exploration behavior of geological prospecting, the distribution of boreholes identified by geological radar is calculated by the following formula: λ i : Weight coefficient, determined by the variation function γ(h); According to the geological radar report, the weak interlayer is greater than 3m. The PHC pile composite foundation is calculated by the following formula: spk =m·f pk +(1-m)·f sk ; Replacement rate, f pk : Single pile bearing capacity, f sk : bearing capacity of soil between piles; According to the geological radar report, the weak interlayer reported by the geological radar is less than 3m, and the gravel replacement correction is calculated by the following formula: a =f ak +η d γ m (d-0.5); γ m = gravel weight, d: replacement thickness; According to the geological radar report, the settlement after foundation reinforcement is quantified and calculated by the following formula: σ zi =γ hi +Δσ(additional stress), E si : compression modulus; According to the geological radar report, the settlement is calculated based on the time effect using the following formula: S t =S ∞ U(t); That:

4. The installation and construction process of a steel gate for a water conservancy and hydropower project according to claim 1 is characterized by: In S2, the construction position of the embedded parts is measured and positioned at the construction end, the position of the embedded parts is located by a laser tracker, and the embedded parts and the formwork are assembled. When the offset of the embedded parts is greater than 3mm, the steel positioning frame is assembled, the formwork is reassembled, and concrete is poured, and the formwork is removed and calibrated. When the offset is less than 3mm, concrete is poured, and the formwork is removed and calibrated.

5. The installation and construction process of a steel gate for a water conservancy and hydropower project according to claim 1 is characterized by: In S4, the construction workers hoisted the door leaf components, assembled them at the installation location, welded them, and connected them into a whole. During the welding construction, flaw detection was carried out in stages to check the welding quality of the welding position. If the flaw detection deviation was less than 3mm, the water stop system was installed. If the flaw detection deviation was greater than 3mm, the segmented docking method was adopted, and an anti-deformation fixture was installed on the door leaf, and re-welding was carried out. According to the welding deformation behavior of the leaf door assembly, the welding deformation of the leaf door assembly is calculated by the following formula: α is the thermal expansion coefficient of the material, Q is the input amount of segmented desoldering; L is the leaf length, I is the section moment of inertia, and μ is the anti-deformation fixture efficiency.

6. The installation and construction process of a steel gate for a water conservancy and hydropower project according to claim 1 is characterized by: In S4, when the construction personnel are constructing the waterstop system, they locate the construction position of the gate waterstop, construct the waterstop by hot-melt welding, and perform pressure testing on the hot-melt welding position of the waterstop. When the water seepage of the waterstop is less than 5L, the gate opening and closing machine is installed. When the water seepage of the waterstop is greater than 5L, infrared thermal imaging is used to detect the seepage level. According to the water seepage behavior of the waterstop, the leakage of the waterstop is calculated by the following formula: P = 1-e -λ·ΔT·t ; λ is the difference coefficient of thermal conductivity between the water stop and the defect, ΔT is the temperature difference between the leakage point and the surrounding area; T is the number of infrared scans.

7. The installation and construction process of a steel gate for a water conservancy and hydropower project according to claim 1 is characterized by: In S4, when the gate hoist is installed, the installation position is leveled, and the screw calibration is used to confirm the flatness of the gate hoist installation. At this time, the screw calibration is linked and debugged. When the deviation is less than or equal to 50mm, the entire completed construction is inspected and debugged. When the deviation is greater than or equal to 50mm, the laser centering instrument and PLC synchronous control system are used to re-calibrate the screw. According to the gate hoist installation behavior, the deviation of the gate hoist is calculated by the following formula: K P is the proportionality coefficient, K i is the integration coefficient, k d is the differential coefficient; ∈(t) is the real-time position deviation.

8. The installation and construction process of a steel gate for a water conservancy and hydropower project according to claim 1 is characterized by: In S5, after the construction is completed, acceptance and debugging are carried out. First, a no-load test is carried out, followed by a static load test, and finally a dynamic load test. The combined data of the three experiments are used to confirm that the amplitude generated by the gate is less than 0.15mm. The test is completed. When the amplitude generated by the gate is greater than 0.15mm, the test is repeated and monitored with an acceleration sensor. The counterweight is adjusted and the counterweight is adjusted until the amplitude is less than 0.15mm. According to the experimental report, the offset of the gate is calculated by the following formula: f n : natural frequency of the original system; According to the experimental report, the damping ratio of the counterweight is calculated by the following formula: ζ: Damping ratio.

9. The installation and construction process of a steel gate for a water conservancy and hydropower project according to claim 1 is characterized by: The no-load test, static load test and dynamic load test for the acceptance and commissioning were repeated three times, and the amplitudes of the three tests were all less than 0.15 mm (± 1 mm).

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