Environment-friendly foundation pile construction method for bridge construction

Abstract

The invention belongs to the technical field of bridge construction, and particularly relates to a green and environment-friendly foundation pile construction method for bridge construction, which comprises the following steps: measuring terrain and underground conditions of a preset position, designing the size and shape of a foundation pile according to data, manufacturing a prefabricated foundation pile, transporting the foundation pile to a preset place by using a transportation tool, and calibrating the position of the foundation pile by using positioning equipment. Installing equipment is deployed, the foundation pile is vertically inserted, the position of the foundation pile is checked again, and the position of the foundation pile is adjusted if necessary. According to the method, the size of the foundation pile is precisely designed, and verification and adjustment are conducted on site through high-precision positioning equipment, so that the installation accuracy of the foundation pile is remarkably improved, the site construction time is shortened, the construction quality is improved, and the safety and reliability of bridge construction are ensured. And meanwhile, the application of the prefabricated foundation pile greatly reduces environmental pollution caused by on-site concrete pouring, and conforms to the green and environment-friendly concept.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge construction, and in particular relates to a green and environmentally friendly foundation pile construction method for bridge construction. Background Art

[0002] In traditional bridge construction, foundation piles are usually cast on site, which is not only time-consuming, but also produces a lot of waste, causing certain impacts on the environment. In recent years, with the increase in environmental awareness, prefabricated foundation piles have gradually gained attention due to their advantages of rapid installation and reduced on-site operation time. Prefabricated foundation piles can be mass-produced in a factory environment and then transported to the construction site for installation, which not only improves construction efficiency, but also effectively reduces environmental pollution during the construction process.

[0003] However, there are also some technical difficulties in the actual application of prefabricated piles. In particular, during the on-site installation of the piles, how to ensure that the prefabricated piles can be accurately installed in the predetermined position has become an urgent problem to be solved. Since the prefabricated piles are manufactured far away from the construction site, it is difficult to accurately design them based on the geological conditions of the site. Once the piles arrive at the site, if they cannot be accurately positioned and installed, the safety and stability of the bridge structure may be affected.

[0004] One of the biggest technical challenges in the existing prefabricated pile construction method is how to ensure the accuracy of the pile after installation. Since the size and shape of the prefabricated pile are designed based on preliminary data before manufacturing, which may not fully reflect the actual geological conditions of the construction site, there may be position deviation problems after the pile is inserted. Summary of the invention

[0005] The purpose of the present invention is to provide a green and environmentally friendly foundation pile construction method for bridge construction. By accurately designing the size and shape of the prefabricated foundation piles and combining them with high-precision positioning equipment for on-site verification and adjustment, the accuracy of foundation pile installation can be significantly improved to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention adopts the following technical solution: a green and environmentally friendly pile construction method for bridge construction, comprising:

[0007] a) measuring the terrain and underground conditions of the predetermined location of the bridge to obtain data; b) designing the size and shape of the foundation piles according to the data obtained in step a); c) manufacturing prefabricated foundation piles of the size and shape designed in step b); d) using a transportation tool to transport the prefabricated foundation piles manufactured in step c) to the predetermined location; e) using a positioning device to calibrate the position of the foundation piles at the predetermined location in step d); f) deploying the foundation pile installation equipment according to the position calibrated in step e); g) using the installation equipment deployed in step f), vertically inserting the foundation piles according to the calibrated position; h) after the foundation piles are inserted in step g), using the positioning device again to verify the position of the foundation piles; i) according to the verification result in step h), adjusting the position of the foundation piles as needed until the accuracy requirements are met.

[0008] Preferably, the method further comprises: evaluating the stability of the installation position of the foundation pile according to the data obtained in step a), including:

[0009] a1) analyzing the underground condition data obtained in step a) to determine the maximum allowable bearing pressure Pmax;

[0010] a2) Calculate the contact area S at the bottom of the pile, S = L × W, where L is the length of the pile and W is the width of the pile;

[0011] a3) Use the formula Fallow=Pmax×S to calculate the allowable bearing capacity Fallow at the bottom of the pile;

[0012] a4) Compare the pile design bearing capacity Fdesign with Fallow in step a3) to ensure that Fdesign ≤ Fallow;

[0013] a5) If Fdesign ≤ Fallow in step a4) is established, the pile installation position is confirmed to be stable.

[0014] Preferably, according to the data obtained in step a), the size and shape of the foundation pile are designed, which is achieved by the following steps:

[0015] b1) determining the soil type and its corresponding bearing capacity Csoil obtained from the data in step a);

[0016] b2) According to the required bearing capacity requirements, set the pile design bearing capacity Cdesign;

[0017] b3) Calculate the cross-sectional area A of the pile foundation so that A ≥ Cdesign / Csoil;

[0018] b4) According to the cross-sectional area A calculated in step b3), the width W and height H of the pile are selected to ensure that W×H≥A;

[0019] b5) Based on the width W and height H of step b4), determine the shape of the pile, and adjust the length L according to actual needs to meet the design requirements.

[0020] Preferably, manufacturing the prefabricated piles of designed size and shape in step b) is achieved by the following steps:

[0021] c1) preparing a mold according to the size and shape of the pile designed in step b), ensuring that the size of the mold matches the design size of the pile;

[0022] c2) Calculate the amount of concrete V required for the pile foundation, V = L × W × H, where L is the length of the pile foundation, W is the width of the pile foundation, and H is the height of the pile foundation;

[0023] c3) preparing the concrete material of amount V calculated in step c2) and mixing cement, sand, gravel and water materials in proportion;

[0024] c4) pouring the concrete mixed in step c3) into the mold prepared in step c1) and vibrating to compact it;

[0025] c5) After the concrete in step c4) solidifies, demoulding is performed and the size of the prefabricated piles is checked to see whether they meet the design requirements of step b).

[0026] Preferably, the prefabricated piles manufactured in step c) are transported to a predetermined location using a transportation vehicle, which is achieved by the following steps:

[0027] d1) Measure the mass M of the prefabricated foundation piles and record it;

[0028] d2) selecting a means of transport with a load-bearing capacity greater than or equal to M based on the mass M recorded in step d1);

[0029] d3) Calculate the transport distance D and evaluate the maximum permissible load Wmax on the transport route;

[0030] d4) confirming that the load capacity of the transportation vehicle selected in step d2) is not less than Wmax;

[0031] d5) Using the transportation vehicle selected in step d2), the prefabricated foundation piles are transported from the manufacturing site to the predetermined site evaluated in step d3).

[0032] Preferably, the predetermined location is calibrated using a positioning device for the pile position, which is achieved by the following steps:

[0033] e1) Set reference points A and B at the predetermined locations and record the coordinates XA, YA and XB, YB;

[0034] e2) Use high-precision positioning equipment to measure the distance DAB between reference points A and B, DAB = √[(XA-XB) 2 +(YA-YB) 2 ];

[0035] e3) verifying the accuracy of the reference point setting according to the DAB in step e2);

[0036] e4) Based on the reference points A and B, calculate the coordinates XC and YC of the pile installation position, XC = XA + Lcosθ, YC = YA + Lsinθ, where L is the distance between the pile and the reference point, and θ is the angle between the pile and the reference line;

[0037] e5) Using a positioning device to calibrate the position coordinates XC, YC of the foundation pile calculated in step e4) at a predetermined location.

[0038] Preferably, according to the position calibrated in step e), the pile installation equipment is deployed, which is achieved by the following steps:

[0039] f1) determining the deployment position of the pile installation equipment according to the position coordinates XC, YC calibrated in step e);

[0040] f2) Calculate the straight-line distance Ddevice between the pile installation equipment and the calibration point, Ddevice = √[(XC-Xdevice) 2 +(YC-Ydevice) 2 ], where Xdevice, Ydevice are the current position coordinates of the device;

[0041] f3) adjusting the position of the pile installation device so that the error between it and the position Ddevice calculated in step f2) is less than a preset threshold ε;

[0042] f4) Use a level to calibrate the verticality of the equipment installed on the pile to ensure that the vertical error Δθ of the equipment is within the allowable range;

[0043] f5) After completing steps f3) and f4), confirm that the pile installation equipment is correctly deployed at the location determined in step f1).

[0044] Preferably, the installation equipment deployed in step f) is vertically inserted into the pile according to the calibrated position, which is achieved by the following steps:

[0045] g1) Confirm that the installation equipment deployed in step f) has been accurately aligned with the calibration position coordinates XC, YC;

[0046] g2) Calculate the pile insertion depth Dinsert, Dinsert = H-Hsurface, where H is the total length of the pile and Hsurface is the height of the pile above the ground;

[0047] g3) Using the installation equipment aligned in step g1), start vertically inserting the foundation pile;

[0048] g4) Monitor the verticality deviation Δθ during the pile insertion process to ensure that Δθ does not exceed the allowable range;

[0049] g5) After inserting to the depth Dinsert calculated in step g2), stop inserting to ensure that the verticality of the pile meets the requirements.

[0050] Preferably, after the piles are inserted in step g), the pile positions are verified again using the positioning device, which is achieved by the following steps:

[0051] h1) Use positioning equipment to measure the actual position coordinates Xactual and Yactual of the foundation pile;

[0052] h2) Calculate the deviations ΔX and ΔY between the actual position and the calibrated position of the pile, ΔX = Xactual-XC, ΔY = Yactual-YC;

[0053] h3) evaluating whether the pile position deviation is within the allowable range based on the ΔX and ΔY calculated in step h2);

[0054] h4) If the deviation ΔX or ΔY exceeds the preset threshold ε, the deviation value is recorded;

[0055] h5) According to the deviation record in step h4), adjust the pile position if necessary until the deviation meets the requirements.

[0056] Preferably, according to the verification result of step h), the position of the foundation pile is adjusted as needed until the accuracy requirement is met, which is achieved by the following steps:

[0057] i1) recording the pile position deviations ΔX and ΔY in step h);

[0058] i2) Calculate the pile position adjustment Δadjust. If ΔX>ε, then Δadjust=ΔX-ε, otherwise Δadjust=ΔX+ε. The same is true for ΔY.

[0059] i3) using an adjustment tool to correct the position of the foundation pile, the adjustment amount being Δadjust calculated in step i2);

[0060] i4) After adjustment, use high-precision positioning equipment to measure the pile position deviation ΔX' and ΔY' again;

[0061] i5) Repeat steps i2) to i4) until the deviations ΔX' and ΔY' are within the allowable range.

[0062] Technical effects and advantages of the present invention: The green and environmentally friendly pile construction method for bridge construction proposed by the present invention has the following advantages compared with the prior art:

[0063] The present invention can significantly improve the accuracy of pile installation by accurately designing the size and shape of the prefabricated piles and combining them with high-precision positioning equipment for on-site verification and adjustment. This method not only reduces the time of on-site construction, but also improves the construction quality, thereby ensuring the safety and reliability of bridge construction. In addition, the use of prefabricated piles greatly reduces the environmental pollution caused by on-site concrete pouring, reflecting the concept of green environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 The present invention is a flow chart of a green and environmentally friendly pile construction method for bridge construction. DETAILED DESCRIPTION

[0065] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0066] The present invention provides a green and environmentally friendly pile construction method for bridge construction, such as Figure 1 As shown, including:

[0067] a) Measure the terrain and underground conditions at the intended location of the bridge, and obtain underground condition data at the intended location of the bridge through geological exploration methods (such as drilling sampling, geophysical detection, etc.), including but not limited to soil type, soil layer distribution, groundwater level, bearing capacity and other information, and obtain data; further evaluate the stability of the installation location of the foundation piles based on the acquired data, including:

[0068] a1) Analyze the underground condition data obtained in step a) to determine the maximum allowable bearing pressure Pmax; this step is to ensure that the geological conditions where the piles are located can withstand the loads brought by the piles.

[0069] a2) Calculate the contact area S at the bottom of the pile, S = L × W, where L is the length of the pile and W is the width of the pile; this step is used to determine the size of the contact surface between the pile and the soil.

[0070] a3) Calculate the allowable bearing capacity Fallow at the bottom of the pile using the formula Fallow = Pmax × S; this is to assess the maximum load that the pile can withstand at the predetermined location.

[0071] a4) Compare the pile design bearing capacity Fdesign with Fallow in step a3) to ensure that Fdesign ≤ Fallow;

[0072] a5) If Fdesign≤Fallow holds true in step a4), the pile installation position is confirmed to be stable. The pile installation position is considered stable only when the design bearing capacity does not exceed the allowable bearing capacity.

[0073] By accurately evaluating the bearing capacity of the pile installation location, the risk of pile instability caused by insufficient bearing capacity can be avoided, thereby improving the safety of the bridge structure. By calculating the allowable bearing capacity at the bottom of the pile and comparing it with the design bearing capacity, the design parameters of the pile can be optimized to avoid cost increases caused by over-design. Ensuring the stability of the pile installation location helps improve construction quality and prevent rework or accidents caused by inconsistent geological conditions. Reasonable design and evaluation methods help reduce unnecessary waste of resources and are in line with the concept of green environmental protection.

[0074] b) designing the size and shape of the foundation pile according to the data obtained in step a); further comprising:

[0075] b1) Determine the soil type and its corresponding bearing capacity Csoil in the data obtained in step a); First, analyze the geological data obtained in step a), identify the types of different soil layers, and determine the bearing capacity of each soil type. This step is to ensure that the design of the foundation pile can adapt to the soil conditions.

[0076] b2) According to the required bearing capacity requirements, set the design bearing capacity Cdesign of the pile foundation; according to the bridge design specifications and actual needs, determine the maximum load that the pile foundation must withstand to ensure that the pile foundation can withstand the expected external load during use.

[0077] b3) Calculate the cross-sectional area A of the pile foundation so that A≥Cdesign / Csoil; this formula can be used to calculate the minimum required cross-sectional area of ​​the pile foundation to ensure that the pile foundation can withstand the designed bearing capacity.

[0078] b4) Based on the cross-sectional area A calculated in step b3), select the width W and height H of the pile to ensure that W×H≥A; this step is to determine the specific size of the pile cross-section to ensure that the pile has sufficient cross-sectional area to withstand the designed bearing capacity.

[0079] b5) Based on the width W and height H of step b4), determine the shape of the pile, and adjust the length L according to actual needs to meet the design requirements. Finally, determine the three-dimensional dimensions (length, width, height) of the pile to ensure that the pile meets the mechanical requirements and is easy to produce and install.

[0080] Through scientific calculations, the design bearing capacity of the foundation piles is ensured to match the soil bearing capacity, avoiding waste of resources caused by over-design. The design size of the foundation piles is based on the actual soil bearing capacity, ensuring that the foundation piles can stably bear the weight of the bridge and other external loads after installation, improving the safety and stability of the bridge structure. Reasonable design of the foundation pile size and shape makes the foundation piles easier to manufacture and install, reducing construction difficulty and cost.

[0081] c) manufacturing the prefabricated piles of the designed size and shape in step b); further comprising the following steps:

[0082] c1) Prepare the mold according to the size and shape of the pile designed in step b), and ensure that the mold size matches the designed size of the pile; First, make or select a suitable mold according to the size of the pile (length LL, width WW and height HH) determined in step b). The mold should have sufficient strength and rigidity to ensure that it will not deform during the pouring process, and the surface should be smooth for easy demoulding.

[0083] c2) Calculate the amount of concrete V required for the pile foundation, V = L × W × H, where L is the length of the pile foundation, W is the width of the pile foundation, and H is the height of the pile foundation; calculate the total volume of concrete required based on the size of the pile foundation so as to accurately prepare the corresponding concrete materials.

[0084] c3) preparing the concrete material of quantity V calculated in step c2) and mixing cement, sand, gravel and water materials in proportion; weighing the required cement, sand, gravel and water according to the requirements of the concrete mix ratio to ensure that the proportion of each component meets the design requirements to ensure the quality of the concrete.

[0085] c4) pouring the mixed concrete in step c3) into the mold prepared in step c1) and vibrating it to make it dense; pouring the mixed concrete evenly into the mold and vibrating it using a vibrating table or other vibrating equipment to ensure that the concrete is dense and has no voids, thereby improving the strength and durability of the foundation pile.

[0086] c5) After the concrete solidifies in step c4), demoulding is performed and the size of the prefabricated piles is checked to see if they meet the design requirements of step b). After the concrete reaches sufficient strength, demoulding is performed and a measuring tool is used to carefully check whether the size of the prefabricated piles meets the design standards to ensure the size accuracy of the piles.

[0087] Precise mold making and dimensional inspection ensure that the size of the prefabricated piles is consistent with the design requirements, improving the installation accuracy of the piles and the overall project quality. Prefabricated piles are produced in the factory, not restricted by weather conditions, and have high production efficiency, which can quickly supply a large number of piles and speed up the construction progress. Producing piles in a controlled environment can better control the proportion and quality of concrete, ensure the consistency of the quality of each pile, and improve the overall reliability of the bridge structure.

[0088] d) using a transportation vehicle to transport the prefabricated foundation piles manufactured in step c) to a predetermined location; further comprising:

[0089] d1) Measure the mass M of the prefabricated piles and record them. After the piles are manufactured, use a weighing device to measure the mass of each pile and keep a record so that the appropriate means of transportation can be selected later.

[0090] d2) According to the mass M recorded in step d1), select a means of transport with a load-bearing capacity greater than or equal to M; according to the mass of the foundation piles, select a means of transport that can safely bear the load to ensure safety during transportation.

[0091] d3) Calculate the transport distance D and evaluate the maximum allowable load Wmax on the transport route; measure the distance DD from the manufacturing site to the scheduled installation site, and evaluate the maximum allowable load WmaxWmax of the vehicles on the transport route through information provided by the transportation department or on-site inspections to ensure that the selected means of transport will not be overloaded.

[0092] d4) Confirm that the load capacity of the transportation vehicle selected in step d2) is not less than Wmax; re-verify the load capacity of the selected transportation vehicle to ensure that it not only meets the quality requirements of the pile foundation, but also does not exceed the maximum allowable load limit on the transportation route.

[0093] d5) Use the transportation tool selected in step d2) to transport the prefabricated piles from the manufacturing site to the predetermined location evaluated in step d3). After ensuring that all conditions meet the requirements, use the selected transportation tool to transport the prefabricated piles from the manufacturing site to the predetermined installation site.

[0094] By accurately measuring the quality of the piles and selecting the appropriate means of transport, we ensured safety during transportation and avoided potential safety hazards caused by overloading or inappropriate means of transport. By evaluating the maximum allowable load of the transportation distance and route, we selected the optimal means of transport and route, improving transportation efficiency and shortening transportation time.

[0095] e) using a positioning device to calibrate the position of the foundation pile at the predetermined location in step d); further comprising:

[0096] e1) Set up reference points A and B at the predetermined location and record the coordinates XA, YA and XB, YB; select two fixed and easily identifiable locations at the predetermined installation location as reference points A and B, and use a measuring tool (such as a total station, GPS, etc.) to record the coordinates of these two reference points.

[0097] e2) Use high-precision positioning equipment to measure the distance DAB between reference points A and B, DAB = √[(XA-XB) 2 +(YA-YB)2 ]; Use high-precision positioning equipment to measure the straight-line distance between two points to ensure the accuracy of the measurement results.

[0098] e3) Verify the accuracy of the reference point setting based on the DAB in step e2); compare the actual measured distance DAB with the theoretical distance on the design drawing to ensure that there is no deviation in the setting of the reference point.

[0099] e4) Based on the reference points A and B, calculate the coordinates of the pile installation position XC, YC, XC = XA + Lcosθ, YC = YA + Lsinθ, where L is the distance between the pile and the reference point, and θ is the angle between the pile and the reference line; calculate the actual installation position coordinates of the pile according to the parameters on the design drawing.

[0100] e5) Use the positioning device to calibrate the foundation pile position coordinates XC, YC calculated in step e4) at the predetermined location. Use high-precision positioning equipment to mark the actual coordinates of the foundation pile installation location on the ground to provide an accurate position reference for subsequent foundation pile installation.

[0101] Through high-precision positioning equipment and scientific calculation methods, the accuracy of the pile installation position is ensured, reducing installation errors caused by position deviation. By verifying the accuracy of the benchmark setting, the reliability of the entire calibration process is ensured, avoiding subsequent problems caused by benchmark errors. Using high-precision positioning equipment to quickly and accurately calibrate the pile position improves construction efficiency and reduces the time required for manual measurement and adjustment.

[0102] f) deploying pile installation equipment at the position marked in step e); further comprising:

[0103] f1) Determine the deployment position of the pile installation equipment according to the position coordinates XC, YC calibrated in step e); after the pile position is calibrated, determine the optimal deployment position of the pile installation equipment according to the pile coordinates XC, YC to ensure that the equipment can be accurately aligned with the pile position.

[0104] f2) Calculate the straight-line distance Ddevice between the pile installation equipment and the calibration point, Ddevice = √[(XC-Xdevice) 2 +(YC-Ydevice) 2 ], where Xdevice, Ydevice are the coordinates of the current position of the device; the accuracy of the device deployment position is evaluated by measuring the distance between the current position of the device and the foundation pile calibration point.

[0105] f3) adjusting the position of the pile installation device so that the error between it and the position Ddevice calculated in step f2) is less than a preset threshold ε; adjusting the position of the device according to the calculated distance error to ensure that the distance error between the device and the pile calibration point is within the allowable range.

[0106] f4) Use a level to calibrate the verticality of the equipment installed on the piles to ensure that the vertical error Δθ of the equipment is within the allowable range; use a level to check the verticality of the equipment to ensure that the equipment is in a vertical state to avoid installation deviations caused by tilt.

[0107] f5) After completing steps f3) and f4), confirm that the pile installation equipment is correctly deployed at the location determined in step f1). After ensuring that the equipment position and verticality meet the requirements, confirm that the equipment has been correctly deployed at the predetermined location and prepare for the next step of pile insertion.

[0108] By accurately calculating the distance between the equipment and the pile calibration point and adjusting the equipment position, the accurate deployment of the pile installation equipment is ensured, reducing the installation error caused by equipment position deviation. The verticality of the equipment is calibrated using a level to ensure that the equipment is in a vertical state, avoiding the pile insertion deviation caused by equipment tilt, and enhancing the reliability of construction. By accurately calculating and adjusting the equipment position, the time for manual adjustment is reduced, the construction efficiency is improved, and the construction period is shortened.

[0109] g) using the installation equipment deployed in step f), vertically inserting the pile according to the marked position; further comprising:

[0110] g1) Confirm that the installation equipment deployed in step f) is accurately aligned with the calibrated position coordinates XC, YC; after the pile installation equipment is deployed, use a high-precision positioning device or total station to confirm that the equipment is accurately aligned with the calibrated position coordinates of the pile to ensure that the equipment is in the correct position.

[0111] g2) Calculate the insertion depth Dinsert of the pile, Dinsert = H-Hsurface, where H is the total length of the pile and Hsurface is the height of the pile above the ground. The required insertion depth of the pile is calculated based on the total length of the pile and the height above the ground required by the design.

[0112] g3) Use the installation equipment that has been aligned in step g1) to start vertically inserting the foundation pile; after confirming that the equipment is aligned with the calibration position, start the installation equipment and vertically insert the foundation pile to ensure that the foundation pile is inserted in the correct direction.

[0113] g4) Monitor the verticality deviation Δθ during the pile insertion process to ensure that Δθ does not exceed the allowable range; during the pile insertion process, use a level or other verticality detection tools to monitor the verticality of the pile in real time to ensure that the verticality deviation of the pile is within the allowable range.

[0114] g5) After the pile is inserted to the depth Dinsert calculated in step g2), the insertion is stopped to ensure that the verticality of the pile meets the requirements. When the pile reaches the calculated depth DinsertDinsert, the insertion is stopped and the verticality of the pile is checked again to ensure that the verticality of the pile meets the design requirements.

[0115] By accurately aligning the pile calibration position and calculating the insertion depth of the pile, the accuracy of pile insertion is ensured, reducing installation errors caused by position deviation. Real-time monitoring of verticality deviation during pile insertion and ensuring that the deviation is within the allowable range enhances the reliability of the pile insertion process and avoids pile instability caused by verticality deviation.

[0116] By pre-calculating the insertion depth of the foundation piles and monitoring the verticality in real time during the insertion process, the time for manual adjustment is reduced, the construction efficiency is improved, and the construction period is shortened. By accurately inserting the foundation piles and ensuring that the verticality meets the requirements, the risk of rework caused by improper insertion depth or verticality deviation is reduced, saving construction costs.

[0117] h) after the piles are inserted in step g), the position of the piles is verified again using the positioning device; further comprising:

[0118] h1) Use positioning equipment to measure the actual position coordinates Xactual and Yactual of the foundation piles; after the foundation piles are inserted, use high-precision positioning equipment (such as total station, RTKGPS, etc.) to re-measure the actual position coordinates of the foundation piles.

[0119] h2) Calculate the deviations ΔX and ΔY between the actual position of the foundation pile and the calibrated position, ΔX=Xactual-XC, ΔY=Yactual-YC; Calculate the deviation of the foundation pile position by comparing the actual position coordinates with the calibrated position coordinates.

[0120] h3) Based on the ΔX and ΔY calculated in step h2), evaluate whether the pile position deviation is within the allowable range; according to the design requirements, set an allowable deviation threshold εε, and evaluate whether the pile position deviation exceeds this threshold.

[0121] h4) If the deviation ΔX or ΔY exceeds the preset threshold ε, the deviation value is recorded; if it is found that the position deviation of the foundation pile exceeds the allowable range, the specific deviation value is recorded to provide a basis for subsequent adjustments.

[0122] h5) According to the deviation record in step h4), adjust the position of the foundation pile if necessary until the deviation meets the requirement. According to the recorded deviation value, take corresponding adjustment measures to ensure that the position deviation of the foundation pile is within the allowable range.

[0123] By using high-precision positioning equipment again to measure the actual position of the foundation piles and calculate the deviation, the accuracy of the insertion position of the foundation piles is ensured, and the installation error caused by position deviation is reduced. By evaluating the position deviation of the foundation piles, and recording and adjusting them in a timely manner, the reliability of the foundation pile position verification process is enhanced, and subsequent problems caused by position deviation are avoided. By verifying the position deviation of the foundation piles in real time and adjusting them in a timely manner, the time required for repeated verification and adjustment is reduced, the construction efficiency is improved, and the construction period is shortened. By accurately verifying the position of the foundation piles and adjusting them when necessary, the risk of rework caused by position deviation is reduced, and construction costs are saved.

[0124] i) According to the verification result of step h), adjust the position of the foundation piles as needed until the accuracy requirements are met.

[0125] Further includes:

[0126] i1) recording the pile position deviations ΔX and ΔY in step h); after the pile is inserted, measuring the actual position coordinates of the pile by a high-precision positioning device, and recording the deviations ΔX and ΔY from the calibrated position.

[0127] i2) Calculate the pile position adjustment Δadjust. If ΔX>ε, then Δadjust=ΔX-ε, otherwise Δadjust=ΔX+ε. The same is true for ΔY. Here ε is the preset allowable deviation threshold, and the calculated Δadjust represents the amount that needs to be adjusted to ensure that the pile position deviation is within the allowable range.

[0128] i3) using an adjustment tool to correct the position of the foundation pile, the adjustment amount being the Δadjust calculated in step i2); using a special adjustment tool (such as a hydraulic jack, a fine tuner, etc.) to correct the position of the foundation pile according to the calculated adjustment amount.

[0129] i4) After adjustment, use the high-precision positioning equipment again to measure the pile position deviation ΔX' and ΔY'; after completing one adjustment, use the high-precision positioning equipment again to measure the new position deviation of the pile to verify the effect of the adjustment.

[0130] i5) Repeat steps i2) to i4) until the deviations ΔX' and ΔY' are within the allowable range: If the position deviation of the pile still exceeds the allowable range after one adjustment, repeat steps i2) to i4) and continue to adjust until the position deviation of the pile is within the allowable range.

[0131] In summary, the present invention measures the terrain and underground conditions at a predetermined location, designs the size and shape of the foundation piles according to the data, manufactures prefabricated foundation piles, uses transportation tools to transport the foundation piles to a predetermined location, uses positioning equipment to calibrate the position of the foundation piles, deploys installation equipment, vertically inserts the foundation piles, verifies the position of the foundation piles again, and adjusts the position of the foundation piles when necessary. This method significantly improves the accuracy of the foundation pile installation by accurately designing the foundation pile dimensions and using high-precision positioning equipment to verify and adjust them on site, reduces on-site construction time and improves construction quality, and ensures the safety and reliability of bridge construction. At the same time, the use of prefabricated foundation piles significantly reduces environmental pollution caused by on-site concrete pouring, which is in line with the concept of green environmental protection.

[0132] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A green and environmentally friendly pile construction method for bridge construction, characterized in that: include: a) Measure the terrain and underground conditions at the intended location of the bridge and obtain data; b) designing the size and shape of the foundation pile according to the data obtained in step a); c) manufacturing prefabricated foundation piles of the size and shape designed in step b); d) using a transportation vehicle to transport the prefabricated foundation piles manufactured in step c) to a predetermined location; e) using a positioning device to calibrate the position of the foundation piles at the predetermined location in step d); f) deploying the foundation pile installation equipment according to the position calibrated in step e); g) using the installation equipment deployed in step f), vertically inserting the foundation pile according to the calibrated position; h) after the foundation pile is inserted in step g), using the positioning device again to verify the position of the foundation pile; i) according to the verification result of step h), adjusting the position of the foundation pile as needed until the accuracy requirement is met.

2. A green and environmentally friendly pile construction method for bridge construction according to claim 1, characterized in that: Also includes: Based on the data obtained in step a), the stability of the pile installation location is evaluated, including: a1) analyzing the underground condition data obtained in step a) to determine the maximum allowable bearing pressure Pmax; a2) Calculate the contact area S at the bottom of the pile, S = L × W, where L is the length of the pile and W is the width of the pile; a3) Use the formula Fallow = Pmax × S to calculate the allowable bearing capacity Fal low at the bottom of the pile; a4) Compare the pile design bearing capacity Fdesign with Fallow in step a3) to ensure that Fdesign ≤ Fallow; a5) If Fdesign ≤ Fallow in step a4) is established, the pile installation position is confirmed to be stable.

3. A green and environmentally friendly pile construction method for bridge construction according to claim 2, characterized in that: According to the data obtained in step a), the size and shape of the foundation pile are designed, which can be achieved by the following steps: b1) determining the soil type and its corresponding bearing capacity Csoil obtained from the data in step a); b2) According to the required bearing capacity requirements, set the pile design bearing capacity Cdesign; b3) Calculate the cross-sectional area A of the pile foundation so that A ≥ Cdesign / Csoil; b4) According to the cross-sectional area A calculated in step b3), the width W and height H of the pile are selected to ensure that W×H≥A; b5) Based on the width W and height H of step b4), determine the shape of the pile, and adjust the length L according to actual needs to meet the design requirements.

4. A green and environmentally friendly pile construction method for bridge construction according to claim 3, characterized in that: Manufacturing step b) Designing the size and shape of the prefabricated piles is achieved by the following steps: c1) preparing a mold according to the size and shape of the pile designed in step b), ensuring that the size of the mold matches the design size of the pile; c2) Calculate the amount of concrete V required for the pile foundation, V = L × W × H, where L is the length of the pile foundation, W is the width of the pile foundation, and H is the height of the pile foundation; c3) preparing the concrete material of amount V calculated in step c2) and mixing cement, sand, gravel and water materials in proportion; c4) pouring the concrete mixed in step c3) into the mold prepared in step c1) and vibrating to compact it; c5) After the concrete in step c4) solidifies, demoulding is performed and the size of the prefabricated piles is checked to see whether they meet the design requirements of step b).

5. A green and environmentally friendly pile construction method for bridge construction according to claim 4, characterized in that: The prefabricated piles manufactured in step c) are transported to a predetermined location using a transportation vehicle, which is achieved by the following steps: d1) Measure the mass M of the prefabricated foundation piles and record it; d2) selecting a means of transport with a load-bearing capacity greater than or equal to M based on the mass M recorded in step d1); d3) Calculate the transport distance D and evaluate the maximum permissible load Wmax on the transport route; d4) confirming that the load capacity of the transportation vehicle selected in step d2) is not less than Wmax; d5) Using the transportation vehicle selected in step d2), the prefabricated foundation piles are transported from the manufacturing site to the predetermined site evaluated in step d3).

6. A green and environmentally friendly pile construction method for bridge construction according to claim 5, characterized in that: The predetermined location is used to calibrate the pile position using positioning equipment, which is achieved through the following steps: e1) Set reference points A and B at the predetermined locations and record the coordinates XA, YA and XB, YB; e2) Use high-precision positioning equipment to measure the distance DAB between reference points A and B, DAB = √[(XA-XB)2+(YA-YB)2]; e3) verifying the accuracy of the reference point setting according to the DAB in step e2); e4) Based on the reference points A and B, calculate the coordinates XC and YC of the pile installation position, XC = XA + Lcosθ, YC = YA + Lsinθ, where L is the distance between the pile and the reference point, and θ is the angle between the pile and the reference line; e5) Using a positioning device to calibrate the position coordinates XC, YC of the foundation pile calculated in step e4) at a predetermined location.

7. A green and environmentally friendly pile construction method for bridge construction according to claim 6, characterized in that: Deploy the pile installation equipment according to the position marked in step e), which can be achieved by the following steps: f1) determining the deployment position of the pile installation equipment according to the position coordinates XC, YC calibrated in step e); f2) Calculate the straight-line distance Ddevice between the foundation pile installation device and the calibration point, Ddevice = √[(XC-Xdevice)2+(YC-Ydevice)2], where Xdevice, Ydevice are the current position coordinates of the device; f3) adjusting the position of the pile installation device so that the error between it and the position Ddevice calculated in step f2) is less than a preset threshold ε; f4) Use a level to calibrate the verticality of the equipment installed on the pile to ensure that the vertical error Δθ of the equipment is within the allowable range; f5) After completing steps f3) and f4), confirm that the pile installation equipment is correctly deployed at the location determined in step f1).

8. A green and environmentally friendly pile construction method for bridge construction according to claim 7, characterized in that: The installation equipment deployed in step f) is inserted vertically into the foundation pile according to the marked position, which is achieved by the following steps: g1) confirming that the installation equipment deployed in step f) has been accurately aligned with the calibration position coordinates XC, YC; g2) Calculate the pile insertion depth Dinsert, Dinsert = H-Hsurface, where H is the total length of the pile and Hsurface is the height of the pile above the ground; g3) Using the installation equipment aligned in step g1), start vertically inserting the foundation pile; g4) Monitor the verticality deviation Δθ during the pile insertion process to ensure that Δθ does not exceed the allowable range; g5) After inserting to the depth Dinsert calculated in step g2), stop inserting to ensure that the verticality of the pile meets the requirements.

9. A green and environmentally friendly pile construction method for bridge construction according to claim 8, characterized in that: After the piles are inserted in step g), the pile positions are verified again using the positioning equipment, which is achieved by the following steps: h1) Use positioning equipment to measure the actual position coordinates Xactual and Yactual of the foundation pile; h2) Calculate the deviations ΔX and ΔY between the actual position and the calibrated position of the pile, ΔX = Xactual-XC, ΔY = Yactual-YC; h3) evaluating whether the pile position deviation is within the allowable range based on the ΔX and ΔY calculated in step h2); h4) If the deviation ΔX or ΔY exceeds the preset threshold ε, the deviation value is recorded; h5) According to the deviation record in step h4), adjust the pile position if necessary until the deviation meets the requirements.

10. A green and environmentally friendly pile construction method for bridge construction according to claim 9, characterized in that: According to the verification result of step h), the position of the foundation pile is adjusted as needed until the accuracy requirement is met, which is achieved by the following steps: i 1) recording the pile position deviations ΔX and ΔY in step h); i2) Calculate the pile position adjustment Δadjust. If ΔX>ε, then Δadjust=ΔX-ε, otherwise Δadjust=ΔX+ε. The same is true for ΔY. i 3) Use the adjustment tool to correct the position of the foundation pile, and the adjustment amount is Δadjust calculated in step i2); i4) After adjustment, use high-precision positioning equipment to measure the pile position deviation ΔX' and ΔY' again; i5) Repeat steps i2) to i4) until the deviations ΔX' and ΔY' are within the allowable range.

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