Telescopic high pier column concrete intelligent spraying maintenance device and operation method

Abstract

The invention discloses a telescopic high pier column concrete intelligent spraying maintenance device and an operation method, and belongs to the technical field of bridge construction maintenance. The maintenance device comprises a supporting frame detachably installed on the top of the stand column, a hoisting system arranged in the supporting frame, a telescopic telescopic frame, a sealing cover body, a sealing cover cap and a spraying system, wherein the sealing cover body and the sealing cover cap are arranged outside the telescopic frame in a covering mode. The telescopic frame can be pulled by a hoisting system and extends downwards from the supporting frame to form a barrel-shaped structure arranged outside the stand column in a sleeving mode. The spraying system comprises a vertical water pipe synchronously stretching and retracting along with the telescopic frame, an annular water pipe surrounding the stand column, a water supply pump, a hygrograph and a spray head. The vertical water pipe is communicated with the annular water pipe, and the spray head can be controlled to intelligently spray to the surface of the stand column through monitoring of the hygrograph. The maintenance device is simple and compact in structure, can be contracted for transportation and storage, is convenient to transfer, can effectively maintain the maintenance humidity, saves water and energy consumption, and has the advantages of safety, economy, high efficiency and energy conservation by combining with a corresponding operation method.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of energy-saving ecological bridge construction field in spray maintenance device, specifically refers to a telescopic high pier column concrete intelligent spray maintenance device and operating method. BACKGROUND

[0002] High pier column as the core load-bearing component of elevated bridge, its concrete strength and durability are directly related to the safety and service life of the overall structure. The hardening process of concrete depends on the full hydration reaction of cement, and the reaction must be carried out in a continuous, suitable temperature and humidity environment. Since high pier column is mostly in outdoor open scene, it is easily affected by wind, sunlight, high temperature and other natural factors, the surface water evaporates quickly, and if not properly maintained, cracks are likely to occur, resulting in reduced concrete strength, poor permeability and other quality problems. Therefore, stable and efficient spraying maintenance of high pier column has become a key link to ensure engineering quality.

[0003] The prior art is to paste a maintenance film on the outside of the pier body or install a combined maintenance film with water retention function or spray a maintenance agent on the surface of the pier body. There is also a Chinese patent "High pier column concrete intelligent spraying maintenance device and operating method" (Patent No. CN202411760596.5), which is a fine design for the adaptability, precision and energy saving of high pier column maintenance. It uses sealing measures to inhibit the disordered evaporation of water, and introduces intelligent spraying maintenance technology, thereby achieving significant progress in saving water resources, reducing production costs and improving concrete maintenance quality. However, in actual engineering application, it is found that the device is fixed in structure, with large overall volume and weight, and needs to be assisted by large lifting equipment during transportation, transfer and installation, which is inconvenient to operate and low in efficiency. In addition, its storage is also difficult, not only occupying space, but also having certain safety hazards, and the overall economy is insufficient, which is difficult to fully meet the requirements of flexibility, energy saving and low carbon on construction site. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide a telescopic high pier column concrete intelligent spraying maintenance device and operating method which is simple in structure, convenient to transport, store and use on site, safe and economical, and energy-saving and emission-reducing.

[0005] The technical problem of the present application is solved by the following technical solution: The utility model provides a telescopic high pier column concrete intelligent spraying maintenance device, which comprises a bearing platform on a plurality of pile foundations and a stand column poured on the bearing platform, a supporting frame, a telescopic frame and a spraying system, the supporting frame is detachably installed on the top of the stand column, a hoisting system is arranged in the supporting frame, the telescopic frame is supported on the supporting frame in a contracted state, is pulled by the hoisting system and is extended downward from the top of the supporting frame to form a barrel-shaped structure sleeved on the outer side of the stand column, a barrel-shaped sealing cover body is sleeved on the outer side of the telescopic frame, and a sealing cover cap is arranged on the top of the telescopic frame, the spraying system comprises a water supply pump, a plurality of vertical water pipes arranged in the circumferential direction of the inner side wall of the telescopic frame and capable of synchronously telescoping with the telescopic frame and a plurality of ring water pipes arranged around the stand column from top to bottom, the vertical water pipes and the ring water pipes are in communication with each other, a plurality of humidity meters are arranged on the vertical water pipes from top to bottom, a plurality of nozzles are arranged on the upper portion of the vertical water pipes and the lower side of the ring water pipe located at the top end, and water mist particles are sprayed to the surface of the stand column by the nozzles to perform maintenance.

[0006] The telescopic frame comprises a plurality of rectangular frames which are sequentially sleeved on the outer side of the stand column from top to bottom, the outer contour of the rectangular frame is 30cm-50cm larger than the maximum outer contour of the stand column, X-shaped telescopic rods are connected to each rectangular frame through hinges B, the telescopic rods of the upper rectangular frame and the telescopic rods of the lower rectangular frame are connected through hinges A between the adjacent two rectangular frames and form a telescopic hinged frame structure.

[0007] The total height of the telescopic frame in the barrel-shaped structure is , the height between the adjacent two rectangular frames is , the height of the rectangular frame is , the gap between the adjacent two rectangular frames in the contracted state of the telescopic frame is , and The total height of the telescopic frame in the extended state is The telescopic ratio is , When the total height of the telescopic frame in the extended state is 10m, , the height in the contracted state is about The supporting frame is detachably installed on the hoop upper portion of the anchoring rib wound on the top of the stand column, the anchoring rib bears the vertical pressure , under the action of wind force, the anchoring rib bears the horizontal shear force and the moment ; Formula one, telescopic frame load calculation of anchoring rib action 1, vertical pressure : simplified calculation is the total weight of the telescopic frame + sealing cover cap and sealing cover body; 2. Horizontal shear force and moment : Equation two, the most unfavorable force calculation of anchoring bar The most unfavorable force calculation of anchoring bar is that the telescopic frame in hoisting and shrinkage state is supported on the support frame, and is pulled to stretch to the bottom of the column to form a barrel-shaped structure under the action of strong wind, the anchoring bar is simplified as a thin-walled cylinder with a radius , a height , a wall thickness , , an elastic modulus , and a Poisson's ratio . Since the vertical pressure is not large, in order to simplify the calculation, the influence of the vertical pressure on the force of the anchoring bar is ignored. When , that is, the wall thickness is much smaller than the radius, the bending deformation of the thin-walled cylinder is mainly axial bending, and the hoop constraint effect can be further simplified. According to the theory of elasticity, the thin-walled cylinder subjected to horizontal shear force and moment differential equation and its solution are derived as follows: The boundary conditions are The solution is The vertical angle of the thin-walled cylinder: ; The vertical displacement of the thin-walled cylinder: ; The total radial displacement of the thin-walled cylinder: When the radial displacement is consistent with the direction of load displacement, the displacement of the load acting surface is maximum ; The vertical bending normal stress of the thin-walled cylinder: When , the stress extreme value appears on the inner and outer surfaces; The hoop bending stress of the thin-walled cylinder: ; The transverse shear stress of the thin-walled cylinder: , the stress extreme value appears on , ; Equation three, normal working range of anchoring bar The vertical angle of the thin-walled cylinder: ; The vertical displacement of the thin-walled cylinder: ; The total radial displacement of the thin-walled cylinder: ; The vertical bending normal stress of the thin-walled cylinder: ; Circumferential bending stress in a thin-walled cylinder: ; Transverse shear stress in a thin-walled cylinder: ; The symbols in Formula 1, Formula 2, and Formula 3 are defined as follows: —These represent the height of the rectangular frame of the telescopic frame, the radius of the column, and the radius of the center of the anchor bar, respectively, in units of... ; —These represent the length of the anchor bars, the height from the top surface of the expansion joint to the top surface of the anchor bars, the height of the vertical centerline of the adjacent rectangular frames after the expansion joint is extended, the total number of expansion joint sections, the gap between adjacent rectangular frames in the retracted state, and the expansion ratio of the expansion joint, all in units of 1. ; —The vertical pressure borne by the anchor bars, and the horizontal shear force and moment borne by the anchor bars under wind force, respectively, in units of ; —These are the wind loads on the top and bottom of the telescopic frame when the maximum allowable wind force for concrete construction is specified by national standards, respectively, in units of [unit missing]. ; —Simplify the anchor bar to the radius The wall thickness, elastic modulus, Poisson's ratio of the thin-walled cylinder The distance from the center to the edge of the horizontal section of the thin-walled cylindrical wall, in units of 1 and 2 respectively. ; —Simplify the anchor bar to the radius For a thin-walled cylinder, a rectangular coordinate system is established at the center of the bottom of the cylinder, with the horizontal axis, origin, and vertical axis as the axes, and the unit is 1 / 2. ; —These represent the bending moment, shear force, displacement, and rotation angle acting vertically on the thin-walled cylinder, respectively, with units of... ; —These represent the vertical bending normal stress, circumferential bending normal stress, and transverse shear stress of a thin-walled cylinder, respectively, in units of _____. ; —These represent the allowable vertical displacement, allowable total radial displacement, allowable vertical rotation angle, allowable bending normal stress, and allowable shear stress of a thin-walled cylinder, respectively, in units of... .

[0008] At the four corners of the rectangular frame, cross-shaped pads, square steel bars, and stop blocks are placed; the pads are cross-shaped steel blocks, and the thickness of the pads is 2 to 3 times the side length of the square steel bars; the dimensions of the square steel bars are 2. cm ~3 cm .

[0009] The sealing cover is made of thin plastic material and is securely fastened to the telescopic frame by multiple easy-to-assemble and disassemble plastic mushroom-shaped fasteners or metal fasteners; the sealing cover is securely fastened to the topmost ring water pipe by multiple easy-to-assemble and disassemble plastic mushroom-shaped fasteners or metal fasteners; the joint between the sealing cover and the sealing cover is sealed to prevent water mist leakage, and the bottom of the sealing cover and the top surface of the support are bent to cover the gravel and seal the water mist particles that fall through the seepage.

[0010] The support frame is a square frame welded from multiple H-shaped stainless steel bars. The square frame is placed within the distribution area of ​​the anchor bars. The outer side of the support frame is provided with a support rod that extends horizontally outward by 2cm to 3cm from the outer contour of the column. The support rod is placed on the stirrups that are wrapped around the anchor bars.

[0011] The hoisting system includes a winch, pulleys, cables, and a steering ring; the winch is a double-drum winch located at the bottom of the support frame, the pulleys are installed at the top of the support frame, and the cables wound by the winch are connected to the rectangular frame at the bottom of the telescopic frame in sequence through the pulleys and the steering ring welded to the telescopic frame; the winch winds or releases the cables to drive the telescopic frame to retract or extend.

[0012] The vertical water pipe is a stainless steel corrugated hose or a braided hose, and the vertical water pipe is connected to a water supply pump.

[0013] The nozzle is a fine atomizing nozzle, and the average diameter of the sprayed water mist particles is 10 mm. ~15 The nozzle working pressure is between 0.2 and 0.5 MPa; the flow rate and spraying time of the nozzle are controlled by a solenoid valve with automatic control function.

[0014] An operation method for a telescopic intelligent spray curing device for high-pier concrete includes the following steps: Step 1: Design of a Telescopic High Pier Column Concrete Intelligent Spray Curing Device ①A preliminary design scheme is proposed based on the requirements for intelligent spray curing of high pier columns concrete; ② Calculate the technical parameters of each component of the telescopic high pier column concrete intelligent spray curing device, preliminarily determine the radius of the sealing cover and sealing cover, design relative humidity, minimum relative humidity, and the flow rate of water mist supplemented by multiple nozzles, and preliminarily determine the relevant parameters through experiments or analogy. ③ Verify the stress on the anchor bars at the top of the column using formulas one through three to ensure structural safety; ④ Conduct construction drawing design, fabricate telescopic frame, support frame, sealing cover body, sealing cover, purchase vertical water pipe, ring water pipe, water supply pump, sprinkler head, humidity meter, and develop a dedicated remote control APP for mobile phones, ensuring that the quality meets the design requirements; Step 2: Install the telescopic intelligent spray curing device for high pier concrete. ① Wrap the stirrups around the top of the anchor bars at the top of the column, weld the anchor bars together, place the lifting support frame on top of the anchor bars at the top of the column, install the winch at the bottom of the support frame, and install the pulleys on the top of the support frame. ② The telescopic frame in the retracted state is supported on the support frame and connected to the hoisting system. The cable is released by the hoisting system to slowly extend the telescopic frame to the bottom of the column. A deflector ring needs to be installed at the turning point of the cable. ③ Lift the sealing cover and sealing cover body and place them on the support frame. Use fasteners to accurately install the sealing cover and sealing cover body onto the telescopic frame. The sealing cover and sealing cover body are sealed without water mist leakage. The bottom of the sealing cover body and the top surface of the foundation are bent to cover the gravel and seal the water mist particles that fall from the seepage part. ④ Install multiple ring water pipes and multiple vertical water pipes on the telescopic frame, connect the maintenance water pipes and water supply pump, test the water flow and ensure there is no leakage, and the inspection is qualified. ⑤ Multiple nozzles are installed on the upper part of multiple vertical water pipes and on the lower side of the topmost ring water pipe. Multiple humidity meters are installed on the multiple vertical water pipes from top to bottom. The multiple humidity meters and multiple nozzles are connected to the central processor in the spray box by solenoid valves. ⑥ Activate the dedicated remote control APP on your mobile phone to connect to the central processing unit system inside the spray box; Step 3: Debug the telescopic high pier column concrete intelligent spray curing device ① Use the central processor in the spray box or a mobile APP to open multiple nozzles and spray water mist in the space between the sealed cover and the column until the relative humidity reaches the design requirements. ②After a certain period of time, when the relative humidity measured by multiple humidity meters is as low as the design humidity, the central processing unit automatically instructs the nozzles to supplement the spray of water mist particles to raise the relative humidity to the design humidity. ③ After a certain period of time, when the relative humidity measured by multiple humidity meters reaches the design humidity, the central processing unit automatically instructs the nozzles to stop replenishing the spray of water mist particles. ④ When the above debugging meets the design requirements, the debugging is completed. If the design requirements are not met, the technical parameters of some components are adjusted. Step 4: Use of the telescopic high-pier column concrete intelligent spray curing device ① The telescopic high pier column concrete intelligent spray curing device was put into use according to the commissioning procedure to intelligently cure the high pier column concrete; ② After 7 days of curing and meeting the design requirements, start the winch to wind the cable to retract the telescopic frame, and then hoist and transport it to the next column for curing.

[0015] Compared with existing technologies, this invention mainly designs a telescopic intelligent spray curing device for high-pier concrete, consisting of a support frame, a telescopic frame, and a spraying system. It has the following advantages: First, each component is simple to manufacture, inexpensive, and reusable, offering high cost-effectiveness. Second, compared with existing methods such as pasting curing films or installing water-retaining combined curing films on the outside of the pier, or applying curing agents to the pier surface, it saves time, is less prone to damage, has strong durability, and provides superior sealing and curing effects. Third, intelligent spray curing of the concrete column allows for precise quantitative control, saving significant water resources compared to fixing sprayers at the top of the pier or installing spray pipes on the pier body. Fourth, the telescopic structure makes long-distance transportation, hoisting and curing, pier relocation, and storage and maintenance more convenient. Fifth, the provided calculation method is clear in principle, scientifically sound, practical, and easy to implement, guiding the implementation of the telescopic intelligent spray curing device for high-pier concrete, thereby saving resources, reducing costs, and improving the safety and quality performance of the project. Therefore, the present invention has a simple structure, is convenient for transportation, storage and relocation, and, combined with the corresponding operating methods, has higher economic benefits, energy-saving and emission-reduction benefits and social benefits. Attached Figure Description

[0016] Figure 1 This is a schematic elevation view of the present invention.

[0017] Figure 2 for Figure 1 Top view.

[0018] Figure 3 This is an elevation view of the telescopic frame and support frame.

[0019] Figure 4 for Figure 3 Section II.

[0020] Figure 5 for Figure 3 The left view.

[0021] Figure 6 for Figure 5 A three-dimensional view of the center pad block.

[0022] Figure 7 The diagram above shows the stress calculation for the anchorage reinforcement of the column, and the top view of the column is shown below. Detailed Implementation

[0023] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0024] like Figures 1-7As shown, 1. Pile foundation, 2. Pile cap, 3. Column, 31. Column reinforcement, 32. Anchor bar, 33. Stirrup, 34. Concrete, 4. Expansion frame, 41. Rectangular frame, 42. Expansion rod, 431. Hinge A, 432. Hinge B, 44. Square steel, 45. Pad, 46. Stop block, 51. Sprinkler box, 52. Vertical water pipe, 53. Ring water pipe, 54. Water pump, 55. Sprinkler head, 61. Sealing cover, 62. Sealing cover, 63. Fastener, 64. Gravel, 7. Hygrometer, 8. Support frame, 81. Support rod, 9. Winch, 91. Pulley, 92. Cable, 93. Steering ring. The same labels in each figure represent the same components.

[0025] Telescopic intelligent spray curing device for high-pier concrete and its operation method, such as Figure 1 As shown, it is mainly used for intelligent spray curing of concrete for high pier columns. Its structure includes multiple pile foundations 1, pile caps 2 and columns 3 poured on the pile caps, as well as support frames 8, telescopic frames 4 and spraying systems.

[0026] The pile foundation 1 is the foundation of the bridge pier. Multiple pile foundations are connected together by the pile cap 2 to form the foundation of the bridge pier.

[0027] The column 3 is formed by connecting pre-embedded steel bars that extend out of the pier to form column steel bars 31, and then pouring cement concrete after erecting the pier formwork. It is one of the key, difficult and crucial points for ensuring the quality of bridge construction. The top of the column 3 is provided with anchor bars 32 that are connected to the cap beam. The anchor bars are connected by stirrups 33.

[0028] The support frame 8 is detachably installed on the upper part of the stirrup 33 of the anchor bar 32 wrapped around the top of the column 3. The support frame 8 is a square frame welded from multiple H-shaped stainless steel bars. The square frame is placed within the distribution range of the anchor bar 32. The outer side of the support frame 8 is provided with a support rod 81 that extends horizontally outward 2cm to 3cm from the outer contour of the column. The support rod is placed on the stirrup 33 of the anchor bar 32 wrapped around the column. The bottom of the support frame 8 does not contact the concrete 34 at the top of the column 3 in the early stage of curing, so as to avoid damage to the concrete 34 when the early strength is too low.

[0029] The support frame 8 is equipped with a hoisting system, which includes a winch 9, pulleys 91, cables 92, and a steering ring 93. The winch 9 is a double-drum winch located at the bottom of the support frame 8. The pulleys 91 are installed at the top of the support frame 8. The cable 92 wound by the winch 9 is connected to the rectangular frame 41 at the bottom of the telescopic frame 4 through the pulleys 91 and the steering ring 93 welded to the telescopic frame 4. The steering ring 93 is used to adjust the direction of the cable 92 to avoid contact with the concrete of the column. The winch 9 winds or releases the cable 92 to simultaneously pull and drive the telescopic frame 4 to retract or extend, so as to ensure the smooth movement and extension of the telescopic frame.

[0030] The telescopic frame 4 includes multiple rectangular frames 41 that are sequentially fitted around the column from top to bottom. The outer contour of the rectangular frame is 30cm to 50cm larger than the maximum outer contour of the column 3. At the four corners of each rectangular frame, a cross-shaped pad 45, a square steel 44, and a stop block 46 are placed. The pad 45 is a cross-shaped steel block. Two hollow stainless steel square steel 44 are welded to the horizontal and vertical directions of the cross-shaped steel block, thereby forming a horizontal and vertical through seam between the two square steel 44 on each side of the rectangular frame. A stop block 46 is symmetrically welded at a certain distance from the corner in the horizontal through seam on each side of the rectangular frame 41.

[0031] The dimensions of the spacer block 45 control the size of the horizontal and vertical through-slit formed by the four square steel bars 44. The thickness of the spacer block 45 is 2 to 3 times the side length of the square steel bars, and the dimensions of the square steel bars 44 are 2. cm ~3 cm The height of the horizontal cross-shaped part of the pad 45, i.e. the height of the horizontal seam, is 0.8 to 1 times the side length of the square steel. The width of the vertical cross-shaped part of the pad 45, i.e. the width of the vertical through seam, is 0.8 to 1 times the side length of the square steel. The dimensions of the horizontal and vertical through seams are matched with the dimensions of the telescopic rod and the dimensions of the hinge B.

[0032] Each rectangular frame 41 is connected to an X-shaped intersecting telescopic rod 42 via hinge B432, allowing them to rotate relative to each other. Between two adjacent rectangular frames 41, the telescopic rod 42 of the upper rectangular frame and the telescopic rod 42 of the lower rectangular frame are connected via hinge A431, thus forming a telescopic hinged frame structure. The hinged frame structure between each two adjacent rectangular frames 41 forms one telescopic section of the telescopic frame 4, and the total number of telescopic sections will be appropriately set according to the height of the column 3.

[0033] The hinge A is a common type with anchor pins at both ends; the hinge B is a short round rod with a pre-drilled hole in the middle of an X-shaped cross telescopic rod 42 inserted into the middle, and both ends are welded and fixed to the middle of the square steel forming a horizontal through-slit on each side of the rectangular frame 41, so that a pair of cross telescopic rods 42 can rotate around the hinge B fixed in the middle, causing multiple rectangular frames to extend or contract.

[0034] The telescopic rod 42 is made of stainless flat steel. Typically, a pair of X-shaped intersecting telescopic rods are provided on each side of the rectangular frame 41, and the hinge B connecting the pair of X-shaped intersecting telescopic rods is usually located in the middle of each side of the rectangular frame. When the rectangular frame 41 of each telescopic section moves in and out, it will cause the X-shaped intersecting telescopic rod 42 to extend or retract. The stop block in the horizontal through joint plays the role of limiting the retraction range of the telescopic rod. Therefore, multiple rectangular frames strung together can form a multi-section telescopic frame. Thus, in the retracted state, the telescopic frame 4 will be supported on the support frame at a certain distance around the periphery of the column and pulled by the hoisting system. Extending downward from the support frame, it can form a barrel-shaped structure sleeved on the outside of the column. That is, the telescopic frame will serve as the barrel-shaped structural skeleton of the telescopic high pier column concrete intelligent spray curing device.

[0035] The telescopic frame 4 is covered by a barrel-shaped sealing cover 61 on the outside, and the top of the telescopic frame is covered by a sealing cover 62.

[0036] The sealing cover 61 is square, but can also be other cross-sectional shapes that match the shape of the pier column. The sealing cover 61 is made of thin plastic material and has high strength, sun protection, waterproof and anti-aging properties. It is fastened to the telescopic frame 4 by multiple easy-to-assemble and disassemble plastic mushroom fasteners or metal fasteners. The sealing cover 62 is fastened to the topmost ring water pipe 53 by multiple easy-to-assemble and disassemble plastic mushroom fasteners or metal fasteners. The sealing cover 61 and the sealing cover 62 are sealed to prevent water leakage. The bottom of the sealing cover 61 and the top surface of the pier 2 are bent and covered with gravel 64 to seal and prevent water droplets from falling through the permeable parts.

[0037] The spray system includes a water pump 54, multiple vertical water pipes 52 arranged circumferentially along the inner side wall of the telescopic frame 4 and capable of extending and retracting synchronously with it, and multiple ring water pipes 53 arranged from top to bottom around the column.

[0038] The vertical water pipe 52 is a stainless steel corrugated hose or braided hose, which extends and retracts synchronously with the telescopic frame 4. The vertical water pipe 52 is connected to the ring water pipe 53 and connected to the water supply pump 54.

[0039] Multiple humidity meters 7 are installed on the vertical water pipe 52 from top to bottom. Multiple nozzles 55 are provided on the upper part of the vertical water pipe 52 and on the lower side of the topmost ring water pipe 53. Water mist particles are sprayed onto the surface of the column 3 from these multiple nozzles to cure the concrete of the column.

[0040] The humidity meter 7 is a humidity-sensitive sensor that can detect humidity changes within the space between the sealed enclosure 61 and the sealed cover 62 and the column 3. It converts humidity into an electronic signal based on changes in the physical or chemical properties of the material, which is then transmitted to the central processing unit. When the relative humidity measured by multiple humidity meters 7 falls below the minimum humidity threshold, the central processing unit automatically instructs multiple nozzles 55 to replenish the spray of water mist particles to raise the relative humidity to the design value. After a certain period, when the relative humidity measured by multiple humidity meters reaches the design value, the central processing unit automatically instructs the nozzles to stop replenishing the spray of water mist particles. All of the above processes can be controlled by the central processing unit inside the spray box or remotely via a dedicated mobile app.

[0041] The nozzle 55 is a fine atomizing nozzle, spraying water mist particles with an average diameter of 10 mm. ~15 Between these values, the nozzle working pressure is 0.2–0.5 MPa; the flow rate and spraying time of the nozzle 55 are controlled by a solenoid valve with automatic control function.

[0042] The total height of the telescopic frame 4 when extended into a barrel-shaped structure is [missing information]. The height between two adjacent rectangles 41 is The height of rectangle 41 is When the telescopic frame 4 is in the retracted state, the gap between two adjacent rectangular frames is... ,but Total height of the telescopic frame in its extended state: Scalability ratio: , When the total height of the telescopic frame in its extended state is 10m , The height of the contracted state is approximately .

[0043] It is evident that the retracted state of the telescopic intelligent spray curing device for high-pier concrete is only one-sixth to one-twelfth of its extended state. In other words, when the intelligent spray curing device is extended to cure a 10m high pier, the long-distance transportation, hoisting, pier relocation, and storage maintenance in the telescopic state require a height of only 1.2m to 3.0m, demonstrating its great convenience in transportation, storage, and relocation.

[0044] The support frame 8 is detachably installed on the upper part of the stirrup 33 around the anchor bar 32 at the top of the column 3, and the anchor bar 32 bears the vertical pressure. Under wind force, anchor bar 32 bears horizontal shear force. and torque ; Formula 1: Calculation of Expansion Joint Load under the Action of Anchor Bars 1. Vertical pressure Simplify calculations The total weight of the telescopic frame, sealing cover, and sealing body; 2. Horizontal shear force and torque : Formula 2: Calculation of the most unfavorable stress on the anchor bars The most unfavorable stress calculation for anchor bar 32 is when the telescopic frame 4, in its retracted state during hoisting, is just supported on the support frame 8 and is stretched by the hoisting system to the bottom of the column, forming a barrel-shaped structure, and encounters strong winds. The anchor bar is simplified to a radius... A thin-walled cylinder with a height of Wall thickness is , For elastic modulus, It is Poisson's ratio; due to vertical pressure The value is small, and its influence on the stress of the anchor bars is ignored to simplify the calculation. That is, the wall thickness is much smaller than the radius, and the bending deformation of the thin-walled cylinder is mainly axial bending. The circumferential constraint effect can be further simplified. According to the theory of elasticity, the thin-walled cylinder is subjected to horizontal shear force. and torque The derivation of the differential equation and its solution is as follows: Boundary conditions are The solution is Thin-walled cylinder along vertical corner: ; Vertical displacement of the thin-walled cylinder: ; Total radial displacement of thin-walled cylinder: When the radial displacement is in the same direction as the load displacement, The displacement of the load-bearing surface is the largest. Normal stress of vertical bending in a thin-walled cylinder: ,when At this time, the stress extremum appears on both the inner and outer surfaces; Circumferential bending stress in a thin-walled cylinder: ; Transverse shear stress in a thin-walled cylinder: The extreme value of load stress appears , ; Formula 3. Normal working range of anchor bars Thin-walled cylinder along vertical corner: ; Vertical displacement of the thin-walled cylinder: ; Total radial displacement of thin-walled cylinder: ; Normal stress of vertical bending in a thin-walled cylinder: ; Circumferential bending stress in a thin-walled cylinder: ; Transverse shear stress in a thin-walled cylinder: ; The symbols in Formula 1, Formula 2, and Formula 3 are defined as follows: —These represent the height of the rectangular frame 41 of the telescopic frame 4, the radius of the column 3, and the radius of the center of the anchor bar 32, respectively, in units of ; —These represent the length of the anchor bar 32, the height from the top surface of the telescopic frame to the top surface of the anchor bar, the height of the vertical centerline of the adjacent rectangular frame 41 after the telescopic frame is extended, the total number of telescopic sections of the telescopic frame 4, the gap between adjacent rectangular frames in the retracted state, and the telescopic ratio of the telescopic frame 4, in units of _____. ; —The vertical pressure borne by anchor bar 32, and the horizontal shear force and moment borne by the anchor bar under wind force, respectively, with units of: ; —These are the wind loads on the top and bottom of the telescopic frame when the maximum allowable wind force for concrete construction is specified by national standards, respectively, in units of [unit missing]. ; —Simplify the anchor bar to the radius The wall thickness, elastic modulus, Poisson's ratio of the thin-walled cylinder The distance from the center to the edge of the horizontal section of the thin-walled cylindrical wall, in units of 1 and 2 respectively. ; —Simplify the anchor bar to the radius For a thin-walled cylinder, a rectangular coordinate system is established at the center of the bottom of the cylinder, with the horizontal axis, origin, and vertical axis as the axes, and the unit is 1 / 2. ; —These represent the bending moment, shear force, displacement, and rotation angle acting vertically on the thin-walled cylinder, respectively, with units of... ; —These represent the vertical bending normal stress, circumferential bending normal stress, and transverse shear stress of a thin-walled cylinder, respectively, in units of _____. ; —These represent the allowable vertical displacement, allowable total radial displacement, allowable vertical rotation angle, allowable bending normal stress, and allowable shear stress of a thin-walled cylinder, respectively, in units of... .

[0045] The operation method of the telescopic high-pier column concrete intelligent spray curing device includes the following steps: Step 1: Design of a Telescopic High Pier Column Concrete Intelligent Spray Curing Device ①A preliminary design scheme is proposed based on the requirements for intelligent spray curing of high pier columns concrete; ② Calculate the technical parameters of each component of the telescopic high pier column concrete intelligent spray curing device, preliminarily determine the radius of the sealing cover and sealing cover, design relative humidity, minimum relative humidity, and the flow rate of water mist supplemented by multiple nozzles, and preliminarily determine the relevant parameters through experiments or analogy. ③ Verify the stress on the anchor bars at the top of the column using formulas one through three to ensure structural safety; ④ Conduct construction drawing design, manufacture telescopic frame 4, support frame 8, sealing cover body 61, sealing cover 62, purchase vertical water pipe 52, ring water pipe 53, water supply pump 54, sprinkler head 55, humidity meter 7, and develop a dedicated remote control APP for mobile phones. The quality meets the design requirements. Step 2: Install the telescopic intelligent spray curing device for high pier concrete. ① Wrap the stirrup 33 around the top of the anchor bar 32 at the top of the column, weld the anchor bar together, place the lifting support frame 8 on the top of the anchor bar 32 at the top of the column, install the winch 9 at the bottom of the support frame 8, and install the pulley 91 on the upper part of the support frame 8. ② The telescopic frame 4 in the retracted state is supported on the support frame 8 and connected to the hoisting system. The cable 92 is released by the winch 9 of the hoisting system to slowly extend the telescopic frame to the bottom of the column 3. A steering ring 93 needs to be installed at the turning point of the cable 92. ③ Lift the sealing cover 62 and the sealing cover body 61 and place them on the support frame 8. Use fasteners 63 to accurately install the sealing cover 62 and the sealing cover body 61 onto the telescopic frame 4. The sealing cover 62 and the sealing cover body 61 are sealed without water mist leakage. The bottom of the sealing cover body 61 is bent and covered with gravel 64 to seal and prevent water mist particles from falling into the permeable part. ④ Install multiple ring water pipes 53 and multiple vertical water pipes 52 on the telescopic frame 4, connect the maintenance water pipe and water supply pump 54, test the water flow and find no leakage, and pass the inspection. ⑤ Multiple nozzles 55 are installed on the upper part of multiple vertical water pipes 52 and on the lower side of the topmost ring water pipe 53. Multiple humidity meters 7 are installed on the multiple vertical water pipes 52 from top to bottom. The multiple humidity meters and multiple nozzles are connected to the central processing unit inside the spray box 51 by a solenoid valve. ⑥ Activate the dedicated remote control APP on your mobile phone to connect to the central processing unit system inside the spray box 51; Step 3: Debug the telescopic high pier column concrete intelligent spray curing device ①Use the central processing unit or mobile APP in the spray box 51 to open multiple nozzles and spray water mist in the space between the sealed cover 61 and the sealed cover 62 and the column 3 until the relative humidity reaches the design requirements. ②After a certain period of time, when the relative humidity measured by multiple humidity meters 7 is as low as the design humidity, the central processing unit automatically instructs the nozzle 55 to supplement the spray of water mist particles to raise the relative humidity to the design humidity. ③ After a certain period of time, when the relative humidity measured by multiple humidity meters 7 reaches the design humidity, the central processing unit automatically instructs the nozzle 55 to stop replenishing the spray of water mist particles. ④ When the above debugging meets the design requirements, the debugging is completed. If the design requirements are not met, the technical parameters of some components are adjusted. Step 4: Use of the telescopic high-pier column concrete intelligent spray curing device ① The telescopic high pier column concrete intelligent spray curing device was put into use according to the commissioning procedure to intelligently cure the high pier column concrete; ② After 7 days of curing and meeting the design requirements, start the winch to wind the cable to retract the telescopic frame, and then hoist and transport it to the next column for curing.

[0046] In addition, the shape and arrangement of the telescopic frame 4, the sealing cover 61, the sealing cover 62, the vertical water pipe 52, and the ring water pipe 53 can be adapted to the cross-sectional shape of the column 3. For example, when the column cross-section is circular, the above components can be arranged in a circular manner; when the column cross-section is rectangular, they can be arranged in a rectangular manner.

[0047] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A telescopic high pier column concrete intelligentized spraying maintenance device, comprising a pile cap (2) on a plurality of pile foundations (1) and a stand column (3) poured on the pile cap, characterized in that, It also includes a supporting frame (8), a telescopic frame (4) and a spraying system; The supporting frame (8) is detachably mounted on the top of the column (3), and the supporting frame (8) is provided with a hoisting system; The telescopic frame (4) is supported in the contracted state in the supporting frame (8) and is pulled by the hoisting system to extend downward from the top of the supporting frame to form a barrel-shaped structure which is sleeved on the outside of the column; the outside of the telescopic frame (4) is covered with a barrel-shaped sealing cover body (61), and the top of the telescopic frame (4) is covered with a sealing cover (62); The spraying system comprises a water supply pump (54), a plurality of vertical water pipes (52) which are arranged along the inner wall of the telescopic frame (4) in a circumferential direction and can be synchronously telescoped with the telescopic frame (4), and a plurality of ring water pipes (53) which are arranged around the column from top to bottom; the vertical water pipes (52) and the ring water pipes (53) are in communication with each other; a plurality of humidity meters (7) are mounted on the vertical water pipes (52) from top to bottom, and a plurality of nozzles (55) are arranged on the upper part of the vertical water pipes (52) and the lower side of the ring water pipe (53) at the top end, and water mist particles are sprayed from the nozzles to the surface of the column (3) for maintenance.

2. The telescopic high-pier column concrete intelligent spraying maintenance device according to claim 1, wherein The telescopic frame (4) comprises a plurality of rectangular frames (41) which are sequentially sleeved on the outside of the column from top to bottom, and the outer contour of the rectangular frame (41) is larger than the maximum outer contour of the column by 30-50 cm; each rectangular frame (41) is connected with X-shaped telescopic rods (42) through hinges B (432); the telescopic rods of the rectangular frames (41) located above and below are connected through hinges A (431) and form a telescopic hinged frame structure.

3. The telescopic high-pier column concrete intelligent spraying maintenance device according to claim 1, wherein The total height of the telescopic frame (4) in the barrel-shaped structure is , the height between two adjacent rectangular frames (41) is , the height of the rectangular frame (41) is , and the gap between two adjacent rectangular frames of the telescopic frame (4) in the collapsed state is , then Total height of the telescopic stand in the extended state: Extension ratio: , When the total height of the telescopic frame in the extended state is 10 m, ， the contracted height is about The support frame (8) is detachably mounted on the upper part of the hoop (33) winding the anchoring rib (32) on the top of the column (3), and the anchoring rib (32) bears vertical pressure ; under the action of wind, the anchoring rib (32) bears horizontal shear force and moment ; Formula one, telescopic frame load calculation of anchoring rib action 1. Vertical pressure : simplified calculation Total weight of telescopic mast + sealing cover and sealing cover body; 2. Horizontal shear force and moment : Formula two, most unfavorable stress calculation of anchoring rib The most unfavorable stress calculation for the anchor bar (32) is when the telescopic frame (4) in the retracted state of hoisting is just supported on the support frame (8) and is stretched by the hoisting system to the bottom of the column to form a barrel structure, encountering strong winds. The anchor bar is simplified to a radius. A thin-walled cylinder with a height of Wall thickness is , For elastic modulus, Poisson's ratio; due to vertical pressure The value is small, and its influence on the stress of the anchor bars is ignored to simplify the calculation. That is, the wall thickness is much smaller than the radius, and the bending deformation of the thin-walled cylinder is mainly axial bending. The circumferential constraint effect can be further simplified. According to the theory of elasticity, the thin-walled cylinder is subjected to horizontal shear force. and torque The derivation of the action differential equation and its solution is as follows: The boundary condition is The solution is Thin-walled cylinder along vertical corner: ; Thin-walled cylinder vertical displacement: ; Total radial displacement of thin-walled cylinder: When the radial displacement is consistent with the load displacement direction, The displacement of the load acting surface is maximum. Thin-walled cylinder in vertical bending normal stress: When the stress extrema occur at the inner and outer surfaces; Thin-walled cylinder circumferential bending stress: ; Thin-walled cylinders under transverse shear stress: The extreme values of the stress occur at , ; Formula three, normal working range of anchoring rib Thin-walled cylinder along vertical corner: ; Thin-walled cylinder vertical displacement: ; Total radial displacement of thin-walled cylinder: ; Thin-walled cylinder vertical bending normal stress: ; Thin-walled cylinder circumferential bending stress: ; Thin-walled cylinder along the transverse shear stress: ; The symbols in formula one, formula two and formula three are defined as follows: - height of the rectangular frame (41) of the telescopic mast (4), radius of the column (3) and radius of the center of the anchoring rib (32), respectively, in ; - length of the anchoring bar (32), height from the top surface of the telescopic stand to the top surface of the anchoring bar, height of the vertical midline of the adjacent rectangular frame (41) after the telescopic stand is extended, total number of telescopic sections of the telescopic stand (4), gap between the adjacent rectangular frames in the contracted state, telescopic ratio of the telescopic stand (4), unit is ; - the vertical pressure, the horizontal shear force and the moment that the anchoring bar (32) is subjected to, in units of ; - the wind load on the top of the telescopic mast and the wind load on the bottom of the telescopic mast, respectively, in the case of the maximum allowable wind force for concrete construction according to the national standard, in units of ; - the anchoring bar is simplified as a thin-walled cylinder with a radius of the thin-walled cylinder, the elastic modulus, the Poisson's ratio, the distance from the center to the edge of the horizontal section of the thin-walled cylinder, respectively in units of ; - the anchoring bar is simplified as a thin-walled cylinder with a radius of ; a rectangular coordinate system is established at the center of the bottom of the thin-walled cylinder, with a horizontal axis, an origin and a vertical axis, respectively, and the unit is ; - respectively the bending moment, the shear force, the displacement and the rotation angle of a thin-walled cylinder along the vertical direction, in units of ; - thin-walled cylinder vertical bending normal stress, hoop bending normal stress, transverse shear stress, respectively, in units of ; - thin-walled cylinder allowable vertical displacement, allowable total radial displacement, vertical allowable rotation angle, allowable bending normal stress, allowable shear stress, respectively, in .

4. The telescopic high-pier column concrete intelligent spraying maintenance device according to claim 2, wherein The rectangular frame (41) is provided with cross-shaped pads (45), square steels (44) and stoppers (46) at four corners; the pad (45) is a cross-shaped steel piece, the thickness of the pad (45) is 2-3 times the side length of the square steel; the size of the square steel (44) is 2 cm ~3 cm .

5. The telescopic high-pier column concrete intelligent spraying maintenance device according to claim 1, wherein The sealing cover body (61) is made of thin plastic material and is firmly buckled with the telescopic frame (4) through a plurality of plastic mushroom fasteners or metal fasteners which are easy to disassemble and assemble; the sealing cover (62) is firmly buckled with the ring water pipe (53) at the top through a plurality of plastic mushroom fasteners or metal fasteners which are easy to disassemble and assemble; the sealing cover (62) and the sealing cover body (61) are sealed without water mist leakage, and the bottom of the sealing cover body (61) is sealed and permeated by the gravel (64) on the top surface of the pile cap to seal and permeate the water mist particles falling from the top.

6. The telescopic high-pier column concrete intelligent spraying maintenance device according to claim 3, wherein The support frame (8) is a square frame welded by a plurality of H-shaped stainless steel, which is arranged in the range where the anchor bars (32) are distributed, and the outer side of the support frame (8) is provided with a support rod (81) which extends outward by 2cm-3cm and is arranged on the hoop (33) which winds the anchor bar (32). 7.The telescopic high-pier column concrete intelligent spraying maintenance device according to claim 1, characterized in that, The hoisting system comprises a winch (9), a pulley (91), a cable (92) and a steering ring (93); the winch (9) is a double-drum winch arranged at the lower part of the support frame (8), the pulley (91) is arranged at the top of the support frame (8), the cable (92) wound by the winch (9) is connected to the rectangular frame (41) at the bottom of the telescopic frame (4) through the pulley (91) and the steering ring (93) welded on the telescopic frame (4) in sequence; the telescopic frame (4) is contracted or expanded by winding or releasing the cable (92) by the winch (9). 8.The telescopic high-pier column concrete intelligent spraying maintenance device according to claim 1, characterized in that, The vertical water pipe (52) is a stainless steel corrugated hose or a braided hose, and the vertical water pipe (52) is connected to the water supply pump (54). 9.The telescopic high-pier column concrete intelligent spraying maintenance device according to claim 1, characterized in that, The spray head (55) is a fine atomizing nozzle, spraying water mist particles with an average diameter of 10 - 15 μm, and the working pressure of the spray head is 0.2-0.5 MPa; the flow rate and spraying time of the spray head (55) are controlled by a solenoid valve with automatic control function.

10. The operating method of the telescopic high-pier column concrete intelligentized spraying maintenance device according to any one of claims 1-9, characterized in that The operation method comprises the following steps: Step one, design of the telescopic high-pier column concrete intelligent spraying maintenance device ①Preliminary design according to the requirements of the high-pier column concrete intelligent spraying maintenance; ②Calculate the technical parameters of each component of the telescopic high-pier column concrete intelligent spraying maintenance device, preliminarily determine the radius of the sealing cover body and the sealing cover, the relative humidity, the minimum relative humidity, the water mist flow of the multiple spray heads, and preliminarily determine the related parameters through test or analogy method; ③Check the stress condition of the anchor bar at the top of the column by formula one to formula three to ensure the safety of the structure; ④Design the construction drawing, manufacture the telescopic frame (4), the support frame (8), the sealing cover body (61) and the sealing cover (62), purchase the vertical water pipe (52), the ring water pipe (53), the water supply pump (54), the spray head (55) and the humidity meter (7), compile the mobile phone special remote control APP, and the quality meets the design requirements; Step two, installation of the telescopic high-pier column concrete intelligent spraying maintenance device ①Wrap the hoop (33) around the top of the anchor bar (32) at the top of the column (3), and electrically weld the anchor bar; hoist the support frame (8) and place it on the top of the anchor bar (32) at the top of the column (3); install the winch (9) at the bottom of the support frame (8), and install the pulley (91) at the upper part of the support frame (9); ②Hoist the telescopic frame (4) in the contracted state and support it on the support frame (8), and connect the hoisting system; slowly expand the telescopic frame (4) to the bottom of the column by releasing the cable (92) by the winch (9) of the hoisting system, and install the steering ring (93) at the steering position of the cable. ③Lifting the sealing cover (62) and sealing cover body (61) placed on the support frame (8), the sealing cover (62) and sealing cover body (61) are accurately installed on the telescopic frame with fastener (63), the sealing cover and sealing cover body are sealed without water mist leakage, the bottom of the sealing cover body (61) and the top surface of the pile cap (2) are bent to cover the gravel (64) to seal and permeate the water mist particles falling from the bottom; ④Install multiple ring water pipes (53) and multiple vertical water pipes (52) on the telescopic frame (4), connect the maintenance water pipeline and water supply pump (54), and test the water without leakage. Check if it is qualified; ⑤Multiple vertical water pipes (52) and multiple ring water pipes (53) are installed at the top of the vertical water pipes (52) and the lower side of the ring water pipes (53). Multiple spray heads (55) are installed on the upper part of the vertical water pipes (52) and the lower side of the ring water pipes (53). Multiple humidity meters (7) are installed from top to bottom. Multiple humidity meters and multiple spray heads are connected to the central processor in the spray box (51) by electromagnetic valves; ⑥Open the mobile phone special remote control APP for connecting the central processor system in the spray box (51); Step three, debug the telescopic high pier column concrete intelligent spray maintenance device ①Apply the central processor in the spray box (51) or the mobile phone APP to open multiple spray heads to spray water mist in the space between the sealing cover body (61) and the sealing cover (62) and the column (3), so that the relative humidity meets the design requirements; ②After a certain period of time, when the relative humidity measured by multiple humidity meters (7) is low to the design humidity, the central processor automatically instructs the spray head (55) to supplement the spray of water mist particles to raise the relative humidity to the design humidity; ③After a certain period of time, when the relative humidity measured by multiple humidity meters (7) reaches the design humidity, the central processor automatically instructs the spray head to stop supplementing the spray of water mist particles; ④When the above debugging meets the design requirements, the debugging is completed. If the design requirements are not met, adjust the technical parameters of some parts; Step four, use of telescopic high pier column concrete intelligent spray maintenance device ①Put the telescopic high pier column concrete intelligent spray maintenance device into use according to the debugging procedure, and intelligently maintain the high pier column concrete; ②After 7 days of maintenance and reaching the design requirements, start the winch (9) to wind the cable (92) to shrink the telescopic frame (4), and hoist and transport it to the next column for maintenance.

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