Heat absorption tower drum construction string type platform and operation method

Abstract

The invention provides a heat absorption tower drum construction string type platform and an operation method, and the heat absorption tower drum construction string type platform is integrally arranged at the top of a heat absorption tower drum and synchronously climbs along with the rising of the tower drum. Comprising the following components: a central drum ring, platform radiation beams, beam string structure type inhaul cables, radiation beam connecting systems, jacks, supporting steel pipes and internal and external operation hanging brackets. The invention further provides a matched operation method. According to the invention, operations from steel bar binding, template dismounting and hoisting to concrete pouring and the like can be carried out in a fully enclosed platform, so that the working efficiency is improved, and the production risk is reduced. Due to the application of a beam string structure type inhaul cable system, a ball type movable jack sleeve seat and the like, the weight of the whole platform system is greatly reduced while safe use of the construction platform is guaranteed, self-adaptive construction of the light variable-diameter tower barrel construction platform is achieved, the construction cost is saved, the construction procedure is simplified, and the construction efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic and photo-thermal power station engineering, in particular to a heat absorption tower cylinder construction beam string type platform and a working method thereof. BACKGROUND

[0002] As a necessary heat exchange facility in the construction of photovoltaic and photo-thermal power station, the construction quality of the tower cylinder is crucial. The general tower cylinder construction procedure is to build a temporary construction platform to perform mold turning or slip form operation, so as to realize the step-by-step climbing of the tower cylinder. When the tower cylinder wall size changes with the height and the heat absorption tower is high, the features of the inner and outer diameter change of the wall cause the size of the construction platform and the position of the support points to shrink and change constantly, and the installation and adjustment of the construction platform will greatly affect the construction efficiency and quality. The platform structure proposed in the existing construction technology for the construction of the super-high heat absorption tower with variable diameter wall is complex and heavy, the adjustment process is also cumbersome, and there is a great construction safety risk. SUMMARY

[0003] In view of the deficiencies in the prior art, the present application provides a heat absorption tower cylinder construction beam string type platform and a working method thereof, which improves the work efficiency, reduces the production risk, and saves the construction cost.

[0004] The technical scheme adopted by the present application to achieve the above-mentioned purposes is as follows: A heat absorption tower cylinder construction beam string type platform is provided, which is arranged at the top of the tower cylinder of the heat absorption tower and climbs synchronously with the rising of the tower cylinder, comprising the following components: A center drum is arranged at the center of the tower cylinder and has a cylindrical frame structure; A plurality of platform radial beams are arranged, the inner ends of which are fixedly connected to the top of the center drum, and the outer ends of which extend to the outside of the tower cylinder in the radial direction, and the plurality of platform radial beams are evenly distributed on the tower cylinder in a radial manner; A beam string type cable is connected between the bottom of the center drum and the platform radial beam, and each platform radial beam is provided with two or more beam string type cables, and the connection positions of the two or more beam string type cables on the platform radial beam are evenly distributed; Two or more radiation beam connection systems are arranged in a circular ring shape, concentrically arranged with the center drum, and connected and fixed with the platform radial beam; The number of jacks corresponds to the number of platform radial beams, and the bottom of the jack is movably connected to the position where the outer end of the platform radial beam is connected to the tower cylinder; the jack is a through jack, which is connected to a hydraulic pump through a hydraulic oil pipe; Support steel pipes corresponding in number and position to the jacks are arranged uniformly along the tower drum wall, the bottom of the support steel pipe is fixedly connected with the tower drum, the support steel pipe is arranged along the direction of the tower drum wall, the top of the support steel pipe passes through the jack, and the top end of the piston rod of the jack is movably connected with the support steel pipe. The inner and outer operating hangers include inner hangers and outer hangers respectively located on the inner wall and the outer wall of the tower drum, and the number of the inner hangers and the outer hangers corresponds to the platform radial beams, and the top of the inner hangers and the outer hangers is suspendedly connected to the platform radial beams.

[0005] Further, the center drum is welded by three layers of upper, middle and lower drums and drum connecting systems, the drum is assembled by a main beam and a limb angle steel truss, the drum connecting system includes an inner connecting system and an outer connecting system, the inner connecting system is arranged uniformly along the drum according to a certain arc length, and the outer connecting system is arranged according to the position of the inner connecting system.

[0006] Further, the platform radial beams are 40 in total, the included angle between two adjacent platform radial beams is 9°, and the inner end of the platform radial beam is connected to the connecting lug plate of the upper drum of the three-layer drum by high-strength bolts.

[0007] Further, the beam string type cable is a fiber core steel wire rope, four beam string type cables are arranged on each platform radial beam, and each beam string type cable is connected to the connecting lug plate of the lower drum of the three-layer drum.

[0008] Further, the radial beam connecting system is provided with three first, second and third radial beam connecting systems, the first and second radial beam connecting systems are located inside the tower drum, and the third radial beam connecting system is located outside the tower drum.

[0009] Further, the jack is movably connected to the platform radial beam by a ball type movable sleeve, the ball type movable sleeve is sleeved on the platform radial beam and can slide along the platform radial beam, and the jack base is fixedly connected to the ball type movable sleeve by bolts.

[0010] Further, the inner and outer hangers have three operation channels, i.e., upper, middle and lower operation channels, footboards are arranged on the operation channels, a safety vertical net is hung outside the inner and outer hangers, the safety vertical net is hung to the bottom of the inner and outer hangers and is fixed by steel wires, a dense mesh net is hung outside the outer hanger and at the bottom of the inner and outer hangers, and a safety flat net is hung between the upper part of the inner hanger and the bottom of the center drum.

[0011] Further, a construction channel is arranged on the platform radial beam, a channel board is arranged on the construction channel, and a protective rail is arranged outside the construction channel.

[0012] The second object of the present application is to provide a tower construction method based on the tower construction bowstring type platform of the heat absorption tower, comprising the following steps: S1. After the top layer of concrete is poured, the vertical reinforcement of the tower and the support steel pipe are lengthened, the cable wind rope is released, the top layer of concrete is tested and pressed, and when the strength of the top layer of concrete reaches the standard, the platform is lifted; S2. The piston rod of the jack is connected and fixed with the support steel pipe, and then the jack is retracted, thereby driving the overall lifting of the platform; after the single lifting stroke is completed, the platform and the tower are temporarily fixed, then the connection between the piston rod and the support steel pipe is released, the piston rod of the jack is extended, and then the connection between the piston rod and the support steel pipe is fixed again, then the temporary fixing between the platform and the tower is released, and the jack is retracted to drive the platform to continue lifting; the single lifting of the platform is realized by the above cycle; S3. After the platform is lifted, the turnover operation is performed, and the uppermost layer of the tower wall concrete is continuously poured; S4. The cycle S1-S3 completes the construction of the tower; during the construction process, as the platform is lifted, the outer radius of the tower gradually decreases, and the inner and outer operation hangers and the construction passageway are moved inward correspondingly as the outer radius of the tower decreases; at the same time, after the tower is constructed to a certain height, the outermost bowstring beam type cable of the platform is removed layer by layer from the outside to the inside.

[0013] The third object of the present application is to provide an installation and disassembly method of the heat absorption tower tower construction bowstring type platform, comprising the following steps: S1. The platform assembly scaffold is erected according to the layout position of the platform radial beam and the center drum, and the platform assembly scaffold is composed of two parts, one part is inside the tower wall of the heat absorption tower, which is the support scaffold before platform assembly and lifting; the other part is on the periphery of the tower wall, which is the operation platform; S2. After the platform assembly scaffold is erected, the platform center drum is positioned by using hoisting equipment according to the heat absorption tower center positioning line, and then adjusted according to the axis and elevation; S3. The platform radial beam is symmetrically installed, the position of the platform radial beam is determined on the platform assembly scaffold, then the platform radial beam is hoisted to the erected platform assembly scaffold, the elevation position corresponds to the center drum, and one end of the platform radial beam located on the center drum is connected with the center drum by high-strength bolts; S4. The radial beam connection system is hoisted and positioned after the platform radial beam is installed, and the radial beam connection system is connected with the platform radial beam by U-shaped bolts; S5. The bowstring beam type cable is symmetrically installed and tightened, one end of the bowstring beam type cable is connected with the platform radial beam by pinning, the other end is connected with the ear plate of the lower drum, the cable is tightened and compacted by using a rope clamp, and then the cable is symmetrically and synchronously tightened by using an inverted chain; S6. The jack is movably connected with each radial beam, and the support steel pipe penetrates the center of the jack; after completion, the hydraulic oil pipe and the hydraulic pump are installed; S7. Bolt the top of the internal and external operating hangers to the platform's radiant beams. Suspend them below the platform's radiant beams. Lay scaffolding boards between the internal and external operating hangers. S8. Hang vertical safety nets on the inner and outer operating hangers, wrapping them to the bottom of the hangers and securing them along the drum with wire ropes. Hang fine mesh nets on the outside of the outer hanger and at the bottom of the inner and outer operating hangers. Hang a flat safety net between the upper part of the inner hanger and the bottom of the center drum ring. S9. The platform system is dismantled from the outside to the inside, with small components first and large components later. First, the internal and external operating hangers are removed, then the construction access is removed, and the components are transported to the bottom surface using a lift. Finally, the remaining radial beams and drum rings are lifted to the bottom surface using lifting equipment.

[0014] Compared to existing technologies, the cable-stayed platform and operation method for heat-absorbing tower construction provided by the present invention offer the following advantages: The present invention innovatively designs a lightweight, sliding, integrated beam-string platform system, enabling operations from rebar binding, formwork removal and hoisting, to concrete pouring to be performed within a fully enclosed platform, improving work efficiency and reducing production risks. The use of a beam-string cable system and ball-type movable jack sockets ensures the safe use of the construction platform while significantly reducing the weight of the entire platform system. This enables adaptive construction of a lightweight, variable-diameter tower construction platform, saving construction costs, simplifying the construction process, and significantly improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Fig. 1 This is the overall layout diagram of the string-type sliding formwork platform provided by the present invention; Fig. 2 This is a plan view of the overall layout of the string-type sliding formwork platform provided by the present invention; In the figure: 1. Tower; 2. Upper drum ring; 3. Middle drum ring; 4. Lower drum ring; 5. Platform radial beam; 6. Beam string cable; 7. Internal and external operating hangers; 8. Jack; 9. Drum ring connection system; 10. Radial beam connection system; 101. First radial beam connection system; 102. Second radial beam connection system; 103. Third radial beam connection system; 11. Support steel pipe. DETAILED DESCRIPTION

[0016] The present invention will be described in detail below with reference to the accompanying drawings.

[0017] The preferred embodiment of the heat absorption tower construction cable-stayed platform provided by the present invention is as follows: Figs. 1-2 As shown: the platform system is a radial space structure, which is arranged as a whole on the top of the tower 1 of the heat absorption tower and rises synchronously with the rise of the tower 1.

[0018] The center drum is a whole cylindrical frame structure, located at the center of the tower 1, with a height of 4.18 m, an outer radius of 4.0 m, and an inner radius of 3.5 m. The center drum is welded by three layers of upper, middle and lower drums and drum connecting systems 9. The drum is composed of main beams and limb angle steel truss assemblies, wherein the upper drum 2 is composed of [18 main beams and ∠50*5 mm limb angle steel trusses, the middle drum 3 is composed of [12 main beams and ∠50*5 mm limb angle steel trusses, and the lower drum 4 is composed of [16 main beams and ∠50*5 mm limb angle steel trusses.

[0019] The drum connecting system 9 includes inner and outer connecting systems, and the three layers of drums are welded and connected by 25 inner and outer [10 connecting systems. The inner connecting systems are uniformly arranged along the drum at an arc length of 88 cm, and the outer connecting systems are arranged correspondingly to the positions of the inner connecting systems. If the outer connecting systems conflict with the inner support angle steel trusses, the positions are adjusted slightly.

[0020] The platform radial beam 5 is provided with 40 beams, each with a length of 9 m, and is welded by 2 [16 splices and 6 [6 connecting systems in the middle. The inner end of the platform radial beam 5 and the connecting lug plate of the upper drum are connected by high-strength bolts, and the outer end extends radially to the outside of the tower 1. The multiple platform radial beams are uniformly distributed on the tower in a radial manner, and the included angle between the adjacent two platform radial beams is 9°.

[0021] The cable-stayed beam type cable 6 is a 6*37 fiber core steel wire rope with a diameter of 19.5 mm, a nominal tensile strength of 1770 MPa, and a total breaking force of not less than 249 kN. The cable-stayed beam type cable 6 is connected between the bottom of the center drum and the platform radial beam, and is connected to the lug plate corresponding to the lower drum 4. Each platform radial beam 5 is provided with four cable-stayed beam type cables 6, and the connection positions of the four cable-stayed beam type cables 6 on the platform radial beam 5 are arranged according to the stress condition of the platform radial beam 5. In this embodiment, the distances from the connection end of the platform radial beam 5 and the center drum are 1.4 m, 2.8 m, 4.2 m and 5.6 m, respectively. Among them, the outer two (5.6 m, 4.2 m) are removed in the construction process as the heat absorption tower wall radius decreases, and the remaining two (2.8 m, 1.4 m) are finally kept until the heat absorption tower wall construction is completed. In the construction process, the outermost cable is the largest stress component, and the innermost cable is the smallest stress component. When the outer cable is removed, the inner cable gradually becomes the main stress component.

[0022] The radiation beam connecting system 10 is in the shape of a ring, which is a connecting structure of the platform radiation beam 5, used for fixing the mutual position between the platform radiation beams 5, and increasing the overall stability of the platform. The radiation beam connecting system 10 is arranged considering the change of the heat absorption tower cylinder wall radius, and is provided with three rows, i.e. a first radiation beam connecting system 101, a second radiation beam connecting system 102 and a third radiation beam connecting system 103. The first and second radiation beam connecting systems are located inside the tower cylinder, and the third radiation beam connecting system is located outside the tower cylinder. The two rows of the inner side of the cylinder wall are welded together, and the one row of the outer side of the cylinder wall is welded together, the distance between the three radiation beam connecting systems 10 and the connecting end of the platform radiation beam and the center drum is 2.2m, 4.4m and 8.8m respectively.

[0023] The inner and outer operation hangers 7 include inner hangers and outer hangers respectively located on the inner wall and the outer wall of the tower cylinder 1, the number of which corresponds to the platform radiation beam 5, and the top of the inner and outer hangers is suspended and connected to the platform radiation beam. The inner and outer hangers 7 are welded and assembled by B60*8mm flat steel, and are provided with 80 inner and outer hangers, which are 300mm away from the heat absorption tower cylinder wall. The length of a single hanger is 6.2m, and the width is 720mm, and there are three working channels in the inner hanger, i.e. upper, middle and lower working channels, and the heights of the channels are 2.1m, 2.1m and 1.95m respectively. Footboards are laid on the working channels; safety vertical nets are hung on the outer part of the inner and outer hangers, and the safety vertical nets are hung to the bottom of the inner and outer hangers and are fixed by steel wire ropes; dense mesh nets are hung on the outer side of the outer hanger and the bottom of the inner and outer hangers, and safety flat nets are hung between the upper part of the inner hanger and the bottom of the center drum.

[0024] The number of the jacks 8 corresponds to the platform radiation beam 5, the bottom of the jack is movably connected to the position where the outer end of the platform radiation beam is connected to the tower cylinder through a ball type movable sleeve, the ball type movable sleeve is sleeved on the platform radiation beam and can slide along the platform radiation beam, and the jack base is connected and fixed with the ball type movable sleeve through bolts. The jack adopts a through type jack, which is connected with a hydraulic pump through a hydraulic oil pipe. In this embodiment, the jack 8 adopts a 50 type hydraulic jack, and there are 40 jacks in total, and the rated load of a single jack is 5t, and the stroke is 30mm. During lifting, a YKT-56 type slip form hydraulic pump is used for control. During each platform climbing process, the ball type movable sleeve can be self-adaptively adjusted with the support position of the radiation beam according to the slope of the support steel pipe climbing track, so as to realize the self-adaptive function of the platform cylinder wall variable diameter.

[0025] The support steel pipes 11 correspond in number and position to the jacks 8, are arranged uniformly along the circumferential direction of the tower drum 1, are fixed at the bottom to the tower drum, are arranged as a whole along the direction of the drum wall of the tower drum, pass through the jacks 8 at the top, and the top end of the piston rod of the jack 8 is movably connected to the support steel pipe 11. In this embodiment, the support steel pipes 11 are 40 seamless steel pipes with a diameter of 48*3.25 mm, which are arranged uniformly in the circumferential direction of the drum wall, and the installation of the support steel pipes 11 takes into account the mutual staggering of the joints. The first installation length is 3 m, 4 m, 5 m, or 6 m, and the length is extended in time during construction. Before the construction of each section of concrete of the heat absorption tower drum wall, 40 support steel pipes 11 with a diameter of 48*3.25 mm are uniformly arranged in the drum wall at an interval of 9°, as force support and climbing tracks during the lifting of the platform. The platform presses the support steel pipes 11 downward through the jacks 8, and the platform is lifted by the reaction force. After the platform is lifted into position, the drum wall is turned over for construction, and the cycle is repeated.

[0026] A construction passage is further arranged on the platform radial beam 5, a passage plate is arranged on the construction passage, and a protective rail is arranged on the outer side of the construction passage.

[0027] The method for constructing the tower drum of the heat absorption tower by using the platform described in this embodiment is as follows. S1. After the upper layer of concrete is poured, the vertical reinforcement is lengthened, the climbing support steel pipes are lengthened, the cable wind ropes are removed, the top layer of concrete is tested and pressed, and when the strength of the top layer of concrete is not less than 2.5 MPa, the lifting is performed after the lifting permission is obtained.

[0028] S2. The piston rod of the jack is fixedly connected to the support steel pipe, and then the jack is retracted, thereby driving the platform as a whole to be lifted. After the single lifting stroke is completed, the platform and the tower drum are temporarily fixed, the connection between the piston rod and the support steel pipe is then released, the piston rod of the jack is extended, the piston rod is then fixedly connected to the support steel pipe again, the temporary fixing between the platform and the tower drum is then released, the jack is retracted, and the platform is continuously lifted. The single lifting of the platform is realized in this way. The limiting clamps are arranged every 500 mm on the support steel pipe, and the jack is used for step-by-step climbing. After each step of climbing is completed, a person is arranged to check and ensure the leveling.

[0029] S3. After the lifting is completed, the turning over operation is performed, and the uppermost layer of drum wall concrete is poured.

[0030] S4. The construction of the tower drum is completed in cycles of S1-S3. As the platform is climbing, the outer radius of the drum wall will gradually decrease, and the inner and outer hangers, the outer rail of the radial beam, and the passage plate are correspondingly moved inward. After the drum wall is constructed to a certain height, the outermost cable-stayed beam type cable of the platform is removed layer by layer from the outside to the inside, and if necessary, a certain length of the platform radial beam is cut off, the drum wall concrete is continuously constructed, and the construction of the heat absorption tower drum wall is completed.

[0031] The installation and dismounting method of the cable-stayed platform for the heat absorption tower cylinder construction described in this embodiment is as follows: S1. According to the layout position of the radial beam and the center drum, an assembly platform is erected to assemble the annular scaffold, which is composed of two parts. One part is inside the heat absorption tower cylinder wall, which is the support scaffold for platform assembly and lifting before the platform load test. The other part is outside the cylinder wall, which is the working platform. The assembly scaffold can be removed after the platform load test is qualified.

[0032] S2. After the completion of the platform assembly scaffold, the platform center drum is positioned using hoisting equipment according to the heat absorption tower center positioning line. After positioning, adjustment is made according to the axis and elevation. The cable-stayed platform is a large-diameter disc flexible structure, which has the problems of small structural stiffness and poor stability during overall dismounting. A multi-stage fission type radial hoisting point self-balancing overall lifting tool is adopted. A special annular lifting tool is used, which can uniformly connect 10 main steel wire ropes. The main steel wire ropes are connected to 40 groups of radial beams through two fissions (10 to 20 to 40). UU type basket bolts are arranged between the steel wire ropes. The maximum adjustment length is 50 cm. By adjusting the length of the basket bolt screw, the force of each steel wire rope can be evenly distributed, realizing the multi-point self-balancing overall lifting of the cable-stayed platform, and effectively solving the safety risk of structural instability during platform dismounting.

[0033] S3. The radial beams are symmetrically installed. First, the position of the radial beam is determined on the scaffold, then the radial beam is hoisted and transported to the erected scaffold, the elevation position corresponds to the center drum, and one end of the radial beam located on the center drum is connected with the center drum by M25 high-strength bolts.

[0034] S4. The platform radial beam connection system is hoisted and positioned after the radial beam is installed. The steel ring and the radial beam are connected by U-shaped bolts.

[0035] S5. The cable-stayed beam cable is symmetrically installed and tightened. During installation, one end of the woven rope ring is connected with the radial beam by pin connection, and the other end is connected with the ear plate on the lower steel ring of the center drum. The rope clamp is tightened and compacted, and then the inverted chain is symmetrically and synchronously tightened.

[0036] S6. The jack is movably connected with each radial beam, and the supporting steel pipe penetrates the center of the jack. After completion, the main oil pipe and the branch oil pipe are installed. The main oil pipe and the branch oil pipe are connected by a tee joint and a tap, and the connecting bolts are tightened. After placing the hydraulic pump at the designated position of the operation platform, the inlet end of the main oil pipe is connected with the four outlets of the hydraulic pump, and the connecting bolts are tightened.

[0037] S7. The top of the hanger is connected with the radial beam by bolts, suspended above the radial beam, and the footboard is laid on the three-layer channel with a lap length of not less than 200 mm.

[0038] S8. Safety vertical net is hung outside the inner and outer hangers, and is caught to the bottom of the hangers and is fixed along the barrel body by steel wire rope, and dense mesh net is hung outside the outer hanger and at the bottom of the inner and outer hangers, and safety flat net is hung between the upper part of the inner hanger and the bottom of the center drum.

[0039] S9. The platform system is dismantled by the principle of "from outside to inside, small components first, and large components later". The inner and outer hangers are dismantled first, then the railings and the passage plates are dismantled, the components are transported to the bottom surface by using the elevator; finally, the remaining radial beams and the drum are hoisted to the bottom surface by using hoisting equipment.

[0040] The above merely illustrates the specific embodiments of the present application, and is not intended to limit the scope of the present application. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principle of the present application shall fall within the scope of the present application. It should be noted that the components of the present application are not limited to the above overall application, and the technical features described in the specification of the present application can be selected for single use or combined use according to actual needs, therefore, the present application naturally covers other combinations and specific applications related to the present application.

Claims

1. A cable-stayed platform for heat absorption tower construction, which is integrally arranged on the top of the heat absorption tower and rises synchronously with the rise of the tower, characterized in that: Includes the following components: The central drum ring is a cylindrical frame structure located at the center of the tower. There are multiple platform radiation beams, the inner ends of which are fixedly connected to the top of the central drum ring, and the outer ends of which extend radially to the outside of the tower. The multiple platform radiation beams are evenly distributed on the tower in a radial shape; Beam string cables are connected between the bottom of the center drum and the platform radial beams. Each platform radial beam is provided with two or more beam string cables, and the connection positions of the two or more beam string cables on the platform radial beams are evenly distributed. The radiation beam connection system is annular in shape and is provided with two or more. The radiation beam connection system is concentrically arranged with the central drum ring and is fixedly connected to the platform radiation beam; The number of jacks corresponds to the platform radiation beams. The bottom of the jack is movably connected to the position where the outer end of the platform radiation beam is connected to the tower. The jack adopts a through-hole jack, which is connected to the hydraulic pump through a hydraulic oil pipe. The number and position of the supporting steel pipes correspond to the jacks. The supporting steel pipes are evenly arranged along the circumferential direction of the tower wall. The bottom of the supporting steel pipes is fixedly connected to the tower. The supporting steel pipes are arranged along the wall of the tower as a whole. The top of the supporting steel pipes passes through the jacks. The top of the piston rod of the jacks is movably connected to the supporting steel pipes. The internal and external operating hangers include an inner hanger and an outer hanger located on the inner and outer walls of the tower respectively. The number of the inner hanger and the outer hanger corresponds to the platform radiation beam. The tops of the inner hanger and the outer hanger are suspended and connected to the platform radiation beam.

2. The cable-stayed platform for heat absorption tower construction according to claim 1, characterized in that: The central drum ring is welded together by three layers of drum rings and drum ring connection systems. The drum ring is welded together by the main beam and the limb angle steel truss. The drum ring connection system includes an inner connection system and an outer connection system. The inner connection system is evenly arranged along the drum ring according to a certain arc length, and the outer connection system is arranged corresponding to the position of the inner connection system.

3. The cable-stayed platform for heat absorption tower construction according to claim 2, characterized in that: There are 40 platform radiation beams in total, and the angle between two adjacent platform radiation beams is 9 degrees. The inner ends of the platform radiation beams are connected to the connecting ear plates of the upper drum ring in the three-layer drum ring by high-strength bolts.

4. The cable-stayed platform for heat absorption tower construction according to claim 2, characterized in that: The beam-string cables are made of fiber-core steel wire ropes. Each platform radial beam is correspondingly provided with four beam-string cables, and each beam-string cable is connected to the connecting ear plate of the lower drum ring in the three-layer drum ring.

5. The cable-stayed platform for heat absorption tower construction according to claim 1, characterized in that: There are three radiation beam connection systems, namely the first radiation beam connection system, the second radiation beam connection system and the third radiation beam connection system. The first radiation beam connection system and the second radiation beam connection system are located inside the tower, and the third radiation beam connection system is located outside the tower.

6. The cable-stayed platform for heat absorption tower construction according to claim 1, characterized in that: The jack is movably connected to the platform radiation beam through a ball-type movable sleeve. The ball-type movable sleeve is sleeved on the platform radiation beam and can slide along the platform radiation beam. The jack base is fixedly connected to the ball-type movable sleeve by bolts.

7. The cable-stayed platform for heat absorption tower construction according to claim 1, characterized in that: The inner hanger and the outer hanger are provided with three working channels, namely upper, middle and lower channels, which are paved with scaffolding boards; vertical safety nets are hung on the outside of the inner hanger and the outer hanger, which are hooked to the bottom of both and fixed with steel wire ropes; dense mesh nets are hung on the outside of the outer hanger and on the bottom of the inner hanger and the outer hanger, and a flat safety net is hung between the upper part of the inner hanger and the bottom of the center drum ring.

8. The cable-stayed platform for heat absorption tower construction according to claim 1, characterized in that: A construction passage is also provided on the platform radiation beam, a passage plate is laid on the construction passage, and a protective railing is provided on the outside of the construction passage.

9. The tower construction method based on the cable-stayed platform for heat absorption tower construction according to any one of claims 1 to 7 is characterized in that: The following steps are involved: S1. After the top concrete is poured, the tower's vertical reinforcement and supporting steel pipes are extended, the guy ropes are removed, and the top concrete block is pressure tested. When the top concrete strength meets the standard, the platform is hoisted. S2. The jack's piston rod is connected and fixed to the support steel pipe, and then the jack retracts, driving the entire platform to lift. After the single lifting stroke is completed, the platform and tower are temporarily fixed, and the piston rod is disconnected from the support steel pipe. The jack's piston rod extends and then reconnects and fixes to the support steel pipe. The temporary fixation between the platform and tower is then released, and the jack retracts to drive the platform to continue lifting. This cycle completes a single lift of the platform. S3. After the platform is lifted, the mold is turned over and the top layer of concrete is poured. S4. Complete tower construction by looping S1-S3. During construction, as the platform rises, the tower's outer radius gradually decreases. During construction, the inner and outer operating hangers and construction access paths are moved inward accordingly as the tower's outer radius decreases. Concurrently, after the tower reaches a certain height, the outermost beam-string cables of the platform are removed layer by layer from the outside inward.

10. The method for installing and disassembling a cable-stayed platform for heat absorption tower construction according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Erect the platform assembly scaffolding based on the layout of the platform's radial beams and center drum ring. The platform assembly scaffolding consists of two parts: one part is located inside the heat absorption tower wall and serves as the support scaffolding before platform assembly and lifting; the other part is located outside the wall and serves as the working platform; S2. After the platform assembly scaffolding is erected, the platform center drum ring is positioned using hoisting equipment according to the center positioning line of the heat absorption tower. After positioning, it is adjusted according to the axis and elevation. S3. Install the platform's radial beams symmetrically. First, determine their position on the platform assembly scaffolding. Then, hoist the beams onto the erected platform assembly scaffolding, aligning their elevation with the center drum. Securely connect the end located on the center drum to the center drum with high-strength bolts. S4. After the platform radiant beam is installed, hoist the radiant beam connection system into place and connect the radiant beam connection system to the platform radiant beam using U-bolts. S5. Install and tighten the beam string cables symmetrically. During installation, connect one end to the platform's radial beam through-pin and the other end to the lug of the lower drum ring. Tighten and compact with ropes, then tighten symmetrically and synchronously with fall chains. S6. The jack is flexibly connected to each radial beam, with a supporting steel pipe running through the center of the jack. Once completed, install the hydraulic oil pipe and hydraulic pump. S7. Bolt the top of the internal and external operating hangers to the platform's radiant beams. Suspend them below the platform's radiant beams. Lay scaffolding boards between the internal and external operating hangers. S8. Hang vertical safety nets on the inner and outer operating hangers, wrapping them to the bottom of the hangers and securing them along the drum with wire ropes. Hang fine mesh nets on the outside of the outer hanger and at the bottom of the inner and outer operating hangers. Hang a flat safety net between the upper part of the inner hanger and the bottom of the center drum ring. S9. The platform system will be dismantled from the outside in, with small components first and then large components. First, remove the internal and external operating hangers, then the construction access, and use a lift to transport the components to the bottom surface. Finally, use lifting equipment to lift the remaining radial beams and drum rings to the bottom surface.

Images