Steel cylinder structure for water retaining causeway as well as preparation method and application of steel cylinder structure

Abstract

The invention provides a steel cylinder structure for a water retaining causeway and a preparation method and application of the steel cylinder structure, the steel cylinder structure comprises a cylinder formed by splicing at least six sheet bodies of an arc-shaped structure, the single arc length of each sheet body is not smaller than 11 m, the chord length of each sheet body is not smaller than 10 m, and the weight of the largest sheet body is not larger than 50 t; the thickness of a main cylinder wall steel plate of the steel cylinder structure is larger than or equal to 16 mm. The reinforcing plates, the rib plates and the wide mortises are used for splicing the sheet bodies, and the rib plates and the wide mortises are located on the inner sides and the outer sides of the sheet bodies respectively. When the system is applied, the overall efficiency is improved through the cooperative use of the GPS and the laser range finder.

Description

Technical Field

[0001] The invention relates to the technical field of steel cylinder structures for forming dikes, in particular to a steel cylinder structure for water retaining dikes. Background Art

[0002] Insertable cylinders are mainly used in projects such as docks, revetments, cofferdams, and embankments, but there are relatively few related introductions. In addition, some projects need to be constructed on water and cannot be measured and positioned on land, which limits the application scenarios of insertable large cylinders.

[0003] In the prior art, two GPS receivers, two automatic tracking total stations and a computer processing system are generally installed on the construction positioning barge, and four matching reflective prisms and four liquid level gauges are installed on the rigid vibration beam of the vibration sinking system to form a positioning system to monitor the plane position of the large cylinder, the elevation of the cylinder top and the longitudinal and lateral inclination rates. When the system is running, the two GPS receivers receive the differential signal of the CORS reference station in real time to obtain real-time three-dimensional data; after roughly aiming the prism manually, the fully automatic tracking total station can achieve real-time angle measurement and distance measurement, and the four liquid level gauges can measure the height difference on the axis of the large cylinder in real time to monitor the inclination rate. The data of each measuring and monitoring equipment is transmitted to the computer processing system in real time, thereby realizing the vibration sinking positioning of the large cylinder. This method requires the configuration of more instruments, and the positioning barge itself will increase the density of ships on site and increase costs, while making anchoring and moving more complicated. In addition, the relative position relationship between the crane ship and the positioning barge is constantly changing under the action of waves, and its measurement data delay is large, and the measurement accuracy cannot be guaranteed. With the continuous development of measurement technology, it has become inevitable to develop a new, more economical and reasonable system for the sinking and positioning of large-diameter piles or large cylinders on water with higher measurement accuracy. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a steel cylinder structure for a water retaining embankment and a preparation method and application thereof, so as to solve the problems of the prior art.

[0005] In order to solve the above technical problems, the technical solutions provided by the present invention are as follows:

[0006] Steel cylinder structure for water retaining dike, including at least six pieces of arc-shaped structure spliced ​​together to form a cylinder, each piece of arc length is not less than 11m, chord length is not less than 10m, and the weight of the largest piece is not more than 50t;

[0007] The thickness of the main cylinder wall steel plate of the steel cylinder structure is greater than or equal to 16 mm;

[0008] It also includes a reinforcing plate, a rib plate and a wide tongue and groove for splicing the sheet bodies, wherein the rib plate and the wide tongue and groove are respectively located at the inner and outer sides of the sheet body.

[0009] Furthermore, the sheets are spliced ​​by submerged arc welding, a number of transverse ribs and vertical ribs are arranged in a matrix in each sheet, and annular ribs are arranged between adjacent sheets.

[0010] Furthermore, it also includes T-ribs located at the inner wall of the sheet body and the inner wall of the adjacent sheet body, and the wider side of the T-rib forms the vertical rib.

[0011] Furthermore, the diameter of the steel cylinder is 20-24 m, the height of the steel cylinder is 43-62 m, and the weight is 513 t-725 t.

[0012] The present invention provides a method for preparing a steel cylindrical structure for a water retaining embankment, comprising the following steps:

[0013] The steel plate is laid on the plate frame, assembled with horse plates and then welded;

[0014] Lay out the panels, and install the reinforcement plates and ribs;

[0015] On the arc tire frame, the counterweight is pressed and formed;

[0016] Welding ribs to form a sheet body;

[0017] Assembly of several sheets and welding of welds.

[0018] The present invention also provides an application of a steel cylinder structure for a water retaining embankment in a sub-weir type steel cylinder slope embankment, wherein the application specifically forms a slope embankment by positioning and vibrating a plurality of the steel cylinder structures along the embankment axis.

[0019] Furthermore, the positioning and vibration positioning specifically include the following steps:

[0020] 1) Calculation of the coordinates of the center point of the steel cylinder;

[0021] 2) Positioning of wide mortise and tenon grooves;

[0022] 3) Elevation control: The elevation of the top of the cylinder is calculated through the elevation of the laser rangefinder sighting point and the scale on the cylinder. When the laser point indicates the correct scale, it means that the top of the cylinder has reached the designed elevation and the vibration sinking stops;

[0023] 4) Verification.

[0024] Furthermore, the step 1) calculates the coordinates of the center point of the steel cylinder; specifically, the real-time positioning of the ship is achieved by installing GPS on the three corners of the crane ship, and the real-time position of the laser rangefinder is calculated by measuring the relative position relationship between each GPS point and the laser rangefinder; the laser rangefinder measures the distance from the instrument to the wall of the steel cylinder, and the coordinates of the center point of the steel cylinder can be calculated through the position and distance data of the laser rangefinder, combined with the diameter of the steel cylinder.

[0025] Furthermore, the positioning of the wide tenon position in the step is specifically as follows: after the vibrating hammer clamps the steel cylinder and lifts it according to the designed position, a line is drawn on the steel cylinder with paint at the position irradiated by the laser rangefinder according to the designed lifting position. When the steel cylinder is positioned, when the center point is in place, as long as the light spot of the laser rangefinder just falls on the drawn line, it means that there is no rotation of the plane, that is, the position of the tenon is also correct, and vibration sinking can be started, otherwise correction can be made before vibration sinking.

[0026] Furthermore, the step 4) verification is specifically to set up two theodolites on the shore side, determine whether the center position of the steel cylinder reaches the design position by the intersection method, and set up a total station at the same time to measure the plane position and elevation of a wide tenon top reflector in real time. When the center point position of the cylinder and the plane position of the wide tenon reach the design position, vibration sinking construction is carried out; during the vibration sinking process, the total station observes the cylinder top elevation in real time, and stops the vibration sinking when it reaches the design elevation.

[0027] The present invention has the following beneficial effects:

[0028] The present invention forms a steel cylinder by splicing sheets, and then sets the arc length of the steel cylinder, thereby making it possible to splice larger steel cylinders.

[0029] In the present invention, reasonable positioning is utilized to greatly improve the efficiency of processes such as water retaining embankment construction, especially vibration sinking in water, thereby improving the efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A top view of a steel cylinder structure for a water retaining embankment provided by the present invention;

[0031] Figure 2 An expanded view of the sheet provided by the present invention;

[0032] Figure 3 A flow chart of a method for preparing a steel cylinder structure for a water retaining embankment provided by the present invention;

[0033] Figure 4 A flow chart of the vibration sinking of a steel cylinder structure for a water retaining embankment provided by the present invention;

[0034] Figure 5 A schematic diagram of the structure of the positioning system provided by the present invention;

[0035] In the figure:

[0036] 100, steel cylinder; 200, sheet; 300, GPS positioning; 400, laser rangefinder. DETAILED DESCRIPTION

[0037] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0038] See attached Figure 1-5 As shown, the scheme in the present invention should be used in a local confidential project. The total length of the dike of this project is 3474 meters. It is composed of a sub-weir steel cylinder slope dike and a gravel pile slope dike, which intersects with the existing land area. The steel cylinder is arranged along the axis of the dike. The steel cylinder (i.e., steel cylinder structure) 100 has a diameter of 22m, the total height of the cylinder structure is 43m~62m, the standard spacing between cylinders is 2.0m, and the steel cylinders are connected by auxiliary grids. There are 124 steel cylinders in this project, numbered T1~T124, of which T1 is the connection point between the west dike and the gravel pile slope dike, and T124 is the connection point between the east dike and the gravel pile slope dike. The dike uses wide mortise and tenon, lock connection and water-stop curtain to stop water, providing conditions for land precipitation and dry construction.

[0039] In this project, the steel cylinder is a regular cylinder with a diameter of 22 meters, a height of 43 meters to 62 meters, and a weight of about 513 tons to 725 tons. The steel cylinder consists of the main cylinder wall, top and bottom reinforcement plates, transverse ribs, vertical ribs, annular rib plates, annular reinforcement belts, wide tongue and groove, etc. It adopts a reinforcement structure mainly based on T-shaped materials and rib plates. The thickness of the main cylinder wall steel plate is 16 mm, and the top and bottom reinforcement plates are 25 mm.

[0040] In this project, the steel cylinder manufacturing process is as follows:

[0041] Example 1

[0042] In this embodiment, the height of the steel cylinder is 21m, and the entire cylinder can be formed by splicing six arc-shaped sheets 200. Specifically, the cylinder is spliced ​​by submerged arc welding, with transverse ribs, vertical ribs, annular ribs and T-ribs.

[0043] In this embodiment, the preparation process of the steel cylinder is as follows:

[0044] The steel plate is laid on the plate frame, assembled with horse plates and then welded;

[0045] Lay out the panels, and install the reinforcement plates and ribs;

[0046] On the arc tire frame, the counterweight is pressed and formed;

[0047] Welding ribs to form a sheet body;

[0048] Assembly of several sheets and welding of welds.

[0049] Example 2

[0050] In this embodiment, the height of the steel cylinder 100 is relatively high, specifically 60 meters, and the steel cylinder is divided into two sections, upper and lower, and the production adopts the vertical block method, and finally the upper and lower sections are combined into a whole. Among them, each section is decomposed into 6 pieces, each lower section is about 25 meters high, and the pieces are spliced ​​by submerged arc welding. The arc length of a single piece is 11.51 meters, the chord length is 10.98 meters, and the maximum piece weight is about 47 tons.

[0051] The steel cylinder manufacturing process in this embodiment is as follows:

[0052] Step 1: Plate unit fabrication

[0053] (1) Lay the cut steel plate on the panel frame for assembly (fixing the plate) and welding.

[0054] (2) Lay out the panels, install the annular reinforcement strips and fix them with spot welding, and then assemble and weld the T-shaped steel.

[0055] (3) The plate is transferred to the arc pressing frame and pressed into shape using a counterweight.

[0056] (4) Welding of internal components such as annular reinforcement belts and annular vertical plates

[0057] (5) Installation of components such as wide mortise and tenon grooves and vibrating hammer baffles.

[0058] (6) Flake transportation.

[0059] Step 2: Barrel Forming

[0060] (1) Assemble and assemble the pieces in the sheet body.

[0061] (2) Longitudinal seam welding of the cylinder.

[0062] (3) Installation of accessories.

[0063] (4) Cylinder transfer.

[0064] Step 3: Docking of upper and lower tube assemblies

[0065] (1) The upper half of the cylinder is demoulded and the inner membrane frame is shifted.

[0066] (2) The lower half of the cylinder is transported to the place where the assembly is connected

[0067] (3) Assembly and welding of the overall ring seam.

[0068] (4) Wide mortise and tenon installation.

[0069] The steel cylinder transportation process in this embodiment:

[0070] After the steel cylinders are processed and manufactured, they are loaded on board using an 800t gantry crane at the base dock and transported to the construction site by a transport ship. The route is about 46 nautical miles and a voyage takes about 6 to 8 hours.

[0071] After the steel cylinders are processed and manufactured, the transportation distance from the base to the construction site is about 110 nautical miles, and a voyage takes about 16 to 18 hours.

[0072] The transportation process in this embodiment is: steel cylinder landing, sea lashing reinforcement, transport ship shipment, arrival berthing.

[0073] In this embodiment, the vibration sinking process of the steel cylinder is as follows:

[0074] First, the main equipment selection:

[0075] This project uses the 2400t crane ship Sanhang Fengfan with 12*YZ400L hydraulic vibratory hammer groups and the 4000t crane ship Jintai with 12*APE600 hydraulic vibratory hammers to carry out steel cylinder vibration sinking construction. The specific parameters are shown in Table 1.

[0076] Table 1: Parameters of 12*YZ400L hydraulic vibratory hammer

[0077]

[0078] Table 2: Parameters of 12*APE600 hydraulic vibratory hammer

[0079]

[0080] Steel cylinder vibration sinking construction process:

[0081] Step 1: Lifting the crane hammer assembly

[0082] (1) The crane vessel moves to the position above the storage point of the positioning ship hammer assembly and lowers the hook head to the top of the hanger.

[0083] (2) The lifting team connects the rigging to the hook head.

[0084] Step 2: The crane moves the ship to take out the cylinder

[0085] The crane ship holds the vibrating hammer system, winches the cable to move the ship to the top of the steel cylinder to be vibrated and sunk on the transport ship, and drops the hammer group to make the hydraulic chuck close to the corresponding baffle.

[0086] Step 3: Untying the steel cylinder

[0087] Cut strictly according to the untying and cutting lines in the steel cylinder binding diagram. It is strictly forbidden to damage the main structure of the steel cylinder during cutting.

[0088] Step 4: Lifting and moving the steel cylinder

[0089] (1) Determine the chuck hydraulic working system before lifting.

[0090] (2) Make sure the hammer group chuck clamps the steel cylinder.

[0091] Step 5: Vibration and positioning of steel cylinder

[0092] During the positioning process, the deviation, verticality and torsion angle of the steel cylinder are strictly monitored.

[0093] Step 6: The steel cylinder sinks

[0094] After the precise positioning is completed, the hook is slowly lowered. When the cylinder sinks into place, the verticality of the cylinder is ≤1% and the deviation is within 35cm.

[0095] Step 7: Vibration sinking of steel cylinder

[0096] The surveying personnel will check the verticality and deviation of the cylinder again, and start hammer vibration sinking if they are within the allowable range.

[0097] Step 8: Check the barrel position and elevation

[0098] After the vibration sinking is completed, the surveyors will measure the relevant parts of the steel cylinder.

[0099] Step 9: Move the boat with a hammer

[0100] All work is completed, loosen the chuck and lift the hammer assembly.

[0101] Step 10: Sand blowing inside the barrel

[0102] After the steel cylinder is vibrated and sunk to the final hammer standard, the hammer is stopped, the clamp is loosened, the vibrating hammer is hoisted, the crane ship is moved to the old anchor ship, and the vibrating hammer is placed on the old anchor ship. After the steel cylinder is vibrated and sunk, the sand is backfilled in time.

[0103] In this embodiment, the steel cylinder is a thin-walled structure. The top of the steel cylinder needs to bear the large excitation load of the vibration sinking equipment. A steel plate with a wall thickness of 25 mm is used within 1.0 m of the top of the steel cylinder. In this embodiment, wide tenons are vertically arranged at the designated position of the cylinder. Each group of wide tenons is processed from 2 angle steels. Stiffening plates are arranged on both sides. Four groups of wide tenons are welded on a single standard steel cylinder. In the specific function, the steel cylinder transport ship is first used to drop the barge into place, and then the crane ship drops anchor, the steel cylinder is untied, the vibration sinking positioning measurement is performed, the steel cylinder is hoisted, the steel cylinder is vibrated and sunk, and the steel cylinder is monitored.

[0104] In this embodiment, the focus is on the positioning measurement during the vibration sinking of the steel cylinder, which is introduced. Specifically, the construction measurement is the measurement of the plane position, rotation angle, verticality, elevation, etc. during the vibration sinking of the steel cylinder based on the construction control points. The measurement control must select reasonable control points and methods, and the calculation must be accurate and have verification means.

[0105] In order to achieve positioning, a measurement and positioning system is also disclosed in this embodiment. Specifically, in order to ensure the rapid, efficient and accurate construction of the steel cylinder vibration sinking, a measurement and positioning system dedicated to the steel cylinder is developed according to the steel cylinder construction process. The positioning system relies on 3 GNSS receivers and 4 laser rangefinders for data collection, realizes real-time control of the position, elevation and verticality of the steel cylinder, and displays it on the computer in the control room.

[0106] The basic principle of positioning in this embodiment is as follows:

[0107] The real-time positioning of the ship is achieved through GPS1, GPS2, and GPS3 installed at the three corners. The real-time position of the laser rangefinder can be calculated by accurately measuring the relative position relationship between each GPS point and the laser rangefinder. The laser rangefinder measures the distance from the instrument to the wall of the steel cylinder. The coordinates of the center point of the steel cylinder can be calculated through the position and distance data of the laser rangefinder and the diameter of the steel cylinder.

[0108] For the precise positioning of the wide tenon groove, when the vibrating hammer clamps the steel cylinder and lifts it according to the designed position, the plane position of the laser rangefinder light spot on the steel cylinder is fixed, and the plane position relative to the wide tenon groove is also fixed. According to the designed lifting position, a line is drawn on the steel cylinder with paint at the position where the laser rangefinder is irradiated. When the steel cylinder is positioned, when the center point is in place, as long as the laser rangefinder light spot just falls on the drawn line, it means that the plane has not rotated, that is, the position of the tenon groove is also correct, then vibration sinking can be started. If the laser rangefinder cannot illuminate the paint line due to deviation in the lifting position, the rotation angle needs to be corrected according to the offset. When the actual coordinates of the laser point match the corrected design coordinates, it means that the wide tenon groove has reached the design position and vibration sinking construction can be started.

[0109] In this embodiment, for the control of elevation, the elevation of the barrel top can be calculated through the elevation of the laser rangefinder aiming point and the scale on the barrel. When the laser point indicates the correct scale, it means that the barrel top elevation has reached the design elevation and the vibration should be stopped. This operation can be performed directly in the control room through the camera.

[0110] In this embodiment, a verification system is also included, which is described in detail as follows:

[0111] The positioning system is used as the main method to control the positioning of the steel cylinder. In order to ensure the accurate positioning of the steel cylinder, a corresponding calibration system needs to be added on the shore. The calibration system adopts the method of theodolite intersection and total station trigonometric elevation. As shown in the figure, two theodolites are set up on the shore side. The intersection method is used to determine whether the center position of the steel cylinder has reached the design position. At the same time, a total station is set up to measure the plane position and elevation of a reflector on the top of a wide tenon groove in real time. When the center point position of the cylinder and the plane position of the wide tenon groove reach the design position, vibration sinking construction can be carried out. During the vibration sinking process, the total station observes the elevation of the top of the cylinder in real time. When the design elevation is reached, the vibration sinking is stopped.

[0112] In order to further verify the positioning accuracy, this embodiment also includes accuracy analysis. Specifically, the accuracy of the measurement and positioning system is affected by many factors such as parameters and models. The final accuracy is obtained through on-site measurement and comparison. It has been verified that the plane deviation of the positioning system is better than 10 cm and the elevation deviation is better than 10 cm.

[0113] First, for the plane accuracy analysis

[0114] The plane accuracy analysis of the calibration system is as follows:

[0115] Assuming the coordinates of the measuring station are X0, Y0, the plane coordinate expression of the observation point P on the wide mortise is:

[0116]

[0117] The units in the formula are meters, S is the slant distance, α is the azimuth, and z is the vertical angle. Applying the error propagation law to differentiate the above formula, the observation error of point P is obtained as follows:

[0118]

[0119] The plane position error of the measuring point is affected by the distance error Ms, horizontal angle error Mα and vertical angle error Mz in the above formula, and is also affected by the instrument centering error M e , target eccentricity error τ, sighting error M i and environmental influence error Mu. Take the instrument centering error M e =2mm, take the target eccentricity τ = 2mm, the sighting error M i =5mm (affected by vibration). The Leica TZ08 total station is used for measurement, with a nominal angle accuracy of 1″ and a nominal distance accuracy of 1mm+1.5ppm. The maximum angle during observation is 20° and the maximum slant distance is 1000m. In order to ensure the real-time nature of the data, only the left panel is used for observation. The instrument should be self-checked in advance to obtain Ms=2.5mm

[0120] Without considering the influence of environmental error and construction error, the point error can be obtained as follows:

[0121]

[0122] Taking twice the mean error of the point as the limit error, and not considering the angle measurement error caused by external conditions, the maximum error of the point is 12.4mm. However, the actual measurement accuracy will also be affected by environmental factors and human factors, especially when the vibrating hammer vibrates, there is the influence of vibration and heat, which may cause the actual measurement accuracy to be much larger than the theoretical accuracy calculated above, so a comparative measurement is required before construction.

[0123] Secondly, for the elevation accuracy analysis

[0124] According to the height difference formula between two points:

[0125]

[0126] Where: D is the distance from the instrument to the reflector; i is the instrument height; v is the height of the rear-view target; R is the radius of curvature of the earth.

[0127] According to the error propagation law, we can get (the spherical aberration error term is negligible):

[0128]

[0129] Angle measurement 1″, distance measurement 1+1.5ppm, in this project, the maximum vertical angle of observation α=20°, the maximum slant distance D=1000m, the target mark is a reflector, the pasting error is 2mm, the instrument height error is 2mm, and the error of half-measurement angle measurement is Then it can be calculated that the mean error of the height difference is m=3.0mm, and taking 2 times the mean error as the limit error, the maximum error is 6.0mm. However, the actual measurement accuracy will also be affected by environmental factors and human factors, especially when the vibrating hammer vibrates, there is the influence of vibration and heat, which may cause the actual measurement accuracy to be much greater than the theoretical accuracy calculated above, so a comparative measurement is required before construction.

[0130] The principle of the positioning device in this embodiment is:

[0131] (1) The real-time positioning of the ship is achieved by installing GPS1, GPS2, and GPS3 at the three corners. The real-time position of the laser rangefinder can be calculated by accurately measuring the relative position relationship between each GPS point and the laser rangefinder.

[0132] See attached Figure 5As shown, in this embodiment, three GNSS receivers are selected to cooperate to form GPS positioning. Specifically, two GPSs are set at the stern and the other is set at the bow, and is set close to the steel cylinder. At the same time, four laser rangefinders are used for data collection to achieve real-time control of the position, elevation, and verticality of the steel cylinder, and display it on the computer in the control room.

[0133] During use, the ship's real-time positioning is achieved through Beidou 1, Beidou 2, and Beidou 3 installed at the three corners. The real-time position of the laser rangefinder is determined by accurately measuring the relative position relationship between each Beidou point and the laser rangefinder. The laser rangefinder measures the distance from the instrument to the wall of the steel cylinder. The center point coordinates of the steel cylinder are determined by the position and distance data of the laser rangefinder and the diameter of the steel cylinder.

[0134] (2) The laser rangefinder measures the distance from the instrument to the wall of the large cylinder. The position and distance data of the laser rangefinder, combined with the diameter of the large cylinder, can be used to calculate the coordinates of the center point of the steel cylinder.

[0135] (3) By using four laser rangefinders arranged in a matrix with a vertical spacing of 3 m and a horizontal spacing of 10 m, the verticality of the large cylinder can be measured by comparing the distance data with the theoretical value.

[0136] (4) For the precise positioning of the plane torsion angle, when the crane ship's hoist clamps the large cylinder and lifts it according to the designed position, the plane position of the laser rangefinder light spot on the large cylinder is fixed, and the plane position relative to the characteristic angle mark of the large cylinder is also fixed. According to the designed lifting position, a line is drawn on the large cylinder with paint at the position where the laser rangefinder is irradiated. When positioning the steel cylinder, when the center point is in place, as long as the laser rangefinder light spot just falls on the drawn line, it means that the plane has not rotated, that is, the plane torsion angle is also correct, then you can start sinking. If the laser rangefinder cannot illuminate the painted line due to deviation in the lifting position, the rotation angle needs to be corrected according to the offset. When the actual coordinates of the laser point match the corrected design coordinates, it means that the plane torsion angle has reached the design position, and you can start sinking construction.

[0137] (5) For elevation control, the elevation of the barrel top can be calculated through the elevation of the laser rangefinder sighting point and the scale on the barrel. When the laser point indicates the correct scale, it means that the barrel top elevation has reached the design elevation and the sinking should be stopped. This operation can be performed directly in the control room through the camera.

[0138] The present invention has the following advantages:

[0139] 1) The large-diameter insertable large-cylinder sinking water positioning system of the present invention can be directly installed on a crane ship without the need for other auxiliary ships.

[0140] 2) The large-diameter insertable large-cylinder submerged water positioning system of the present invention has a small number of devices, a simple structure, and is easy to maintain.

[0141] 3) The equipment used in the large-diameter insertable large-cylinder submerged water positioning system of the present invention is relatively mature and highly reliable.

[0142] 4) Since no auxiliary ship engine is required and fewer measurement and positioning equipment are needed, the cost of the present invention is greatly reduced compared to the positioning barge auxiliary measurement.

[0143] 5) The large-diameter insertable large-cylinder water positioning system of the present invention does not require the assistance of a positioning barge, can optimize the on-site anchoring environment, improve the efficiency of dynamic anchoring, thereby improving work efficiency, and reducing the risk of on-site ship-machine collision.

[0144] 6) The data generated by the large-diameter insertable large-cylinder submerged water positioning system of the present invention can be integrated into the control room of the crane ship through cables. All data are collected and fed back in real time. Compared with the method in which the data in the positioning barge auxiliary measurement must first be concentrated on the positioning barge and then fed back to the crane ship, it has obvious advantages in data communication reliability and low latency.

[0145] 7) The large-diameter insertable large-cylinder sinking water positioning system of the present invention is highly integrated, and the equipment, surveying personnel, data communications, and command personnel are all integrated on the crane ship, which is beneficial to on-site quality, safety, and progress management.

[0146] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0147] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A steel cylindrical structure for a water retaining embankment, characterized in that: The cylinder is formed by splicing at least six arc-shaped sheets, the arc length of each sheet is not less than 11m, the chord length is not less than 10m, and the weight of the largest sheet is not more than 50t; The thickness of the main cylinder wall steel plate of the steel cylinder structure is greater than or equal to 16 mm; It also includes a reinforcing plate, a rib plate and a wide tongue and groove for splicing the sheet bodies, wherein the rib plate and the wide tongue and groove are respectively located at the inner and outer sides of the sheet body.

2. The steel cylinder structure for water retaining dike according to claim 1, characterized in that: The sheets are spliced ​​by submerged arc welding, a plurality of transverse ribs and vertical ribs are arranged in a matrix in each sheet, and annular ribs are arranged between adjacent sheets.

3. The steel cylinder structure for water retaining dike according to claim 2, characterized in that: It also includes T-ribs located at the inner wall of the sheet and the inner wall of the adjacent sheet, wherein a wider side of the T-rib forms the vertical rib.

4. The steel cylinder structure for water retaining dike according to claim 1, characterized in that: The diameter of the steel cylinder is 20-24m, the height of the steel cylinder is 20-25m or 43-62m, and the weight when the height is 43-62m is 513t-725t.

5. The method for preparing a steel cylindrical structure for a water retaining embankment according to claims 1 to 4, characterized in that: The following steps are involved: The steel plate is laid on the plate frame, assembled with horse plates and then welded; Lay out the panels, and install the reinforcement plates and ribs; On the arc tire frame, the counterweight is pressed and formed; Welding ribs to form a sheet body; Assembly of several sheets and welding of welds.

6. The application of the steel cylinder structure for water retaining embankment according to claims 1-4 in the sub-weir type steel cylinder slope embankment, wherein the application is specifically to form a slope embankment by positioning and vibrating and sinking a plurality of the steel cylinder structures along the axis of the embankment.

7. The use according to claim 6, characterized in that: The positioning and vibration positioning specifically include the following steps: 1) Calculation of the coordinates of the center point of the steel cylinder; 2) Positioning of wide mortise and tenon; 3) Elevation control: The elevation of the top of the cylinder is calculated through the elevation of the laser rangefinder sighting point and the scale on the cylinder. When the laser point indicates the correct scale, it means that the top of the cylinder has reached the designed elevation and the vibration sinking stops; 4) Verification.

8. The use according to claim 7, characterized in that: The step 1) calculates the coordinates of the center point of the steel cylinder; specifically, the real-time positioning of the ship is achieved by using the GPS installed on the three corners of the crane ship, and the real-time position of the laser rangefinder can be calculated by measuring the relative position relationship between each GPS point and the laser rangefinder; the laser rangefinder measures the distance from the instrument to the wall of the steel cylinder, and the coordinates of the center point of the steel cylinder can be calculated through the position and distance data of the laser rangefinder, combined with the diameter of the steel cylinder.

9. The use according to claim 7, characterized in that: The positioning of the wide tenon groove position in the steps is specifically as follows: after the vibrating hammer clamps the steel cylinder and lifts it according to the designed position, a line is drawn on the steel cylinder with paint at the position irradiated by the laser rangefinder according to the designed lifting position. When the steel cylinder is positioned, when the center point is in place, as long as the light spot of the laser rangefinder just falls on the drawn line, it means that the plane has not rotated, that is, the position of the tenon groove is also correct, and vibration sinking can be started; otherwise, correction should be made before vibration sinking.

10. The use according to claim 7, characterized in that: The step 4) verification is specifically to set up two theodolites on the shore side, determine whether the center position of the steel cylinder reaches the design position by the intersection method, and set up a total station at the same time to measure the plane position and elevation of a reflector on the top of a wide tenon groove in real time. When the center point position of the cylinder and the plane position of the wide tenon groove reach the design position, vibration sinking construction is carried out; during the vibration sinking process, the total station observes the elevation of the cylinder top in real time, and stops the vibration sinking when it reaches the design elevation.

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