Formwork supporting frame for silo conical shell construction and construction method

Abstract

The invention discloses a formwork supporting frame for silo conical shell construction and a construction method, and relates to the technical field of silo conical shell construction. The formwork supporting frame for silo conical shell construction comprises a ring beam, a bearing module and a formwork supporting frame, the bearing module and the formwork supporting frame are arranged in the ring beam, the bearing module comprises a main suspension cable and an auxiliary suspension cable, steel pipe frames and scaffold boards are arranged on the surfaces of the main suspension cable and the auxiliary suspension cable, and safety nets are laid on the surfaces of the main suspension cable and the auxiliary suspension cable and the surfaces of the steel pipe frames and the scaffold boards. The formwork supporting frame comprises a vertical rod, a bottom horizontal tube is arranged on the lower portion of the vertical rod, a longitudinal horizontal rod, a transverse horizontal rod, a horizontal diagonal bracing, a vertical diagonal bracing and an inclined rod are arranged on the outer surface of the vertical rod, a conical shell formwork is arranged on the top of the ring beam, and a conical vertex platform beam plate is arranged on the top of the conical shell formwork. According to the silo conical shell construction method, safe and efficient operation of silo conical shell construction is achieved through combination of an innovative suspension cable bearing system and a modular construction technology.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of silo cone shell construction, in particular to a formwork support frame and construction method for silo cone shell construction. BACKGROUND

[0002] Silo cone shell construction is a specialized construction process for the bottom conical shell structure of industrial silos, mainly used to bear the huge lateral pressure generated by material storage and ensure smooth discharge. The core is to achieve high strength and durability through precise structural design and construction control. The construction method mainly includes cast-in-place reinforced concrete and steel structure assembly: for cast-in-place process, full support frame or cantilever scaffold is set up, special-shaped formwork (such as adjustable wood or steel formwork) is installed to match the cone angle (usually 55°-65°), after binding the double-layer double-direction steel mesh, the micro-expansion concrete (such as C30 or above) is poured layer by layer, and the vibration is used to ensure the compactness and uniformity of the inclined surface, and finally the curing treatment is carried out to improve the structural strength. Steel structure cone shell adopts factory prefabricated steel plate pieces (thickness 10-40mm), which are hoisted on site and formed by high-strength bolts or welding, and the angle of the ring stiffener and the node precision need to be strictly controlled to ensure the overall stability. In order to improve the efficiency and reduce the cost, innovative technologies such as orthogonal cable net support system (using main and auxiliary cable hangers to form a steel wire rope load-bearing net) or self-supporting formwork system are widely used, which significantly reduces the amount of scaffold and construction period, and ensures safety through stress monitoring. This process is widely used in warehouse facilities in the food, cement, coal and other industries. The construction quality directly affects the lateral pressure resistance and service life of the silo, and needs to be strictly controlled in the aspects of inclination control, verticality checking (such as plumb method) and anti-seepage treatment.

[0003] In current silo cone shell construction, the traditional support system has problems of insufficient structural stability, low erection efficiency, weak safety protection, etc. Especially in the construction of large-span cone shell structure, the conventional scaffold system is difficult to adapt to the change of cone shell inclination, which easily leads to formwork displacement, poor concrete forming quality, etc. The existing technology of suspension cable load-bearing system mainly uses single-layer cable net, which has uneven load distribution and lacks modular construction platform, affecting the construction progress and safety. Therefore, a safe and reliable formwork support system and supporting construction method are needed. SUMMARY

[0004] In view of the deficiencies of the existing problems, the present application provides a formwork support frame and construction method for silo cone shell construction to solve the problems of insufficient structural stability of the traditional support system, low erection efficiency, and uneven load distribution of single-layer cable net leading to formwork displacement and poor concrete forming quality in the background technology.

[0005] To solve the above problems, the present application is realized by the following technical scheme: a formwork support frame for silo cone shell construction, comprising a ring beam, a bearing module inside the ring beam and the formwork support frame, the bearing module comprising a main suspension cable and a secondary suspension cable, the surface of the main suspension cable and the secondary suspension cable being provided with a steel pipe frame and a scaffold board, the surface of the main suspension cable and the secondary suspension cable and the surface of the steel pipe frame and the scaffold board being paved with a safety net, the formwork support frame comprising a vertical rod, the lower part of the vertical rod being provided with a floor sweeping rod, the outer surface of the vertical rod being provided with a longitudinal horizontal rod, a transverse horizontal rod, a horizontal scissors support, a vertical scissors support and an inclined rod, the top of the ring beam being provided with a cone shell formwork, the top of the cone shell formwork being provided with a cone top platform beam plate, the outer surface of the cone shell formwork and the cone top platform beam plate being provided with a cone shell reinforcement, the end of the main suspension cable and the secondary suspension cable being provided with a shackle, the shackle comprising a hanging piece, the through hole of the hanging piece being sleeved with a connecting rod, the outer part of the connecting rod being provided with a thimble, the outer surface of the connecting rod being provided with a guide groove, the inside of the thimble being rotatably provided with a ball.

[0006] Preferably, the main suspension cable is arranged above the secondary suspension cable, the outer part of the shackle is provided with a lifting ring, the hook part of the lifting ring is anchored into the ring beam, and the outer surface of the ring beam is provided with an outer scaffold.

[0007] Preferably, the steel pipe frame and the scaffold board are connected by iron wire binding, and the steel pipe frame and the scaffold board are connected with the main suspension cable or the secondary suspension cable by iron wire binding.

[0008] Preferably, the bottom end of the vertical rod is provided with a fixing buckle, a flat iron is arranged between the vertical rod and the fixing buckle, and the vertical rod is installed on the node of the main suspension cable and the secondary suspension cable through the fixing buckle and the flat iron.

[0009] Preferably, the horizontal scissors support is provided with three rows of upper, middle and lower horizontal scissors supports, the middle row of the horizontal scissors support is arranged in the upper layer of horizontal rods of the step distance where the lifting ring is located and is tightly arranged with the top of the ring beam, the upper row of the horizontal scissors support is arranged in the horizontal rod of the lower part of the ring beam and is tightly arranged with the top of the ring beam, and the lower row of the horizontal scissors support is arranged on the horizontal rod layer at the bottom.

[0010] Preferably, the vertical scissors support is provided with four rows of horizontal and longitudinal vertical scissors supports, the horizontal scissors support extends to the inner wall of the ring beam and the inclined side wall of the cone shell formwork, the vertical scissors support extends to the cone top platform beam plate, the end of the longitudinal horizontal rod and the transverse horizontal rod is provided with an adjustable supporting top, the end of the adjustable supporting top is provided with a cushion layer, and the longitudinal horizontal rod and the transverse horizontal rod are tightly arranged on the inner wall of the ring beam through the cushion layer.

[0011] Preferably, the roof gutter support frame comprises a positive wire sleeve, the outer surface of the positive wire sleeve is welded with a first steel bar, the inside of the positive wire sleeve is provided with a second steel bar, the outer surface of the second steel bar is provided with an outer sleeve, the outer surface of the outer sleeve is welded with a tripod, the top of the tripod is provided with a jump plate.

[0012] Preferably, the threaded part at one end of the connecting rod is threadedly connected with a nut, the balls and the guide grooves are annularly distributed with the central axis of the connecting rod as the shaft, the outer surface of the ball is arranged in the inside of the guide groove, the outer surface of the sleeve ring is provided with a rope groove, the two sides of the sleeve ring are both sleeved with a guide rod, and one end of the guide rod extending to the rope groove is fixedly connected with a pressing plate.

[0013] Preferably, the outer surface of the pressing plate is fixedly connected with a spring, one end of the spring away from the pressing plate is fixedly connected to the inner wall of the rope groove, one side of the upper part of the sleeve ring is sleeved with a limiting pin, the outer surface of the limiting pin is fixedly connected with a rubber sleeve, the upper part of the pressing plate is provided with a insertion hole, the inner wall of the upper part of the rope groove is provided with a limiting groove, and the outer surface of the rubber sleeve is matched with the inner surfaces of the insertion hole and the limiting groove.

[0014] A construction method of a formwork support frame for silo cone shell construction, comprising the following steps: S1 Hoisting ring pre-burial: hoisting ring is pre-buried when pouring concrete of lower ring beam, the hoisting ring elevation of main suspension cable is set as 21.9m, the hoisting ring elevation of auxiliary suspension cable is set as 21.875m, the height difference is 25mm, the hoisting ring hook is anchored into the main reinforcement of ring beam and is fixed by spot welding; S2 Suspension cable installation: main suspension cable is installed first, auxiliary suspension cable is installed later, both ends are connected with hoisting ring through shackle, cable length deviation is adjusted by thin steel plate clamping square wood pad or shackle, double-layer safety net is bound on the surface of suspension cable, and the safety net is tightly spliced and fixed with suspension cable; S3 Foot hand bracket erection: steel pipe frame and foot hand plate unit are assembled on the ground, tower crane is hoisted to suspension cable, the unit is connected with main and auxiliary suspension cable by binding with iron wire, after steel pipe frame and foot hand plate are installed, two layers of safety net are arranged on them; S4 Support frame erection: vertical rods are locked in main and auxiliary suspension cable nodes through fixed fasteners and flat iron, starting from the central four vertical rods, the support frame is expanded and erected in all directions, and sweeping rod, longitudinal horizontal rod and transverse horizontal rod are arranged, three horizontal scissors are installed (upper / middle / lower layers) and eight vertical scissors are installed (four in horizontal direction and four in vertical direction); S5 Formwork support: cone shell formwork is supported according to 26° inclination, cone top platform beam plate is supported at the top of cone shell formwork; S6 Reinforcement binding: cone shell reinforcement is bound on the outer surface of cone shell formwork and cone top platform beam plate; S7 Concrete pouring: pouring is divided into five times, i.e. lower ring beam+cone shell lower part inclined plate, remaining inclined plate of cone shell, cone shell top+upper ring beam (pre-reserved beam nest), platform beam and platform plate. S8 Demolition: after the conical shell strength reaches 100%, the demolition operation is carried out.

[0015] The application provides a formwork support frame and construction method for silo conical shell construction. 1. The formwork support frame and construction method for silo conical shell construction, by the combination of the innovative suspension cable bearing system and the modular construction technology, safe and efficient operation of silo conical shell construction is realized, the main and auxiliary suspension cables are arranged in double layers to form a tension coordination system, and the precise elevation control technology is used, so that the problem of uneven load distribution of the traditional support system is effectively solved, the modular steel pipe frame unit is pre-assembled on the ground and hoisted by the tower crane as a whole, the risk of high-altitude scattered assembly operation is greatly reduced, the support frame body forms a spatial stability system through multiple horizontal and vertical scissors, and the adjustable support and top boundary restraint device is combined, so that the formwork positioning accuracy meets the construction requirements of large inclination angle conical shell, the technical system significantly improves the construction efficiency, shortens the construction period, and reduces the risk of high-altitude falling.

[0016] 2. The formwork support frame and construction method for silo conical shell construction, by the coordinated application of the incremental pouring process and the all-around protection system, the quality of the concrete structure and the construction safety are ensured, the innovative five-layer pouring process is combined with the inclined vibration technology, the generation of structure cold joints is effectively avoided, the standard rate of concrete strength is improved to the leading level in the industry, the four-fall-prevention safety net system (suspension cable double-layer net + frame double-layer net) realizes the full-closed protection of the operation surface, and the horizontal scissors are extended to the inner wall of the ring beam to form a rigid connection, so that the support system remains stable under extreme wind load.

[0017] 3. The formwork support frame and construction method for silo conical shell construction, by the innovative ball guide groove mechanism and spring pressing plate limiting system of the shackle, the self-adaptive fine adjustment and low-resistance displacement of the suspension cable under the action of dynamic load are realized, the wear and stress concentration of the suspension cable are significantly reduced, and therefore the service life of the key connection node is effectively prolonged, unlike the traditional shackle which generates sliding friction between the shackle and the suspension cable under stress, the design greatly reduces the friction resistance through the rolling friction mechanism, and improves the durability and reliability of the structure. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the whole application; Figure 2 It is a structural schematic diagram of the bearing module and the formwork support frame when they are erected; Figure 3 It is a top view structural schematic diagram of the bearing module; Figure 4 It is a structural schematic diagram of the main and auxiliary suspension cables and the lifting ring; Figure 5 It is a structural schematic diagram of the vertical rod and the main suspension cable; Figure 6 Fig. 2 is a cross-sectional view of the conical shell template of the present application; Figure 7 Fig. 3 is a schematic view of the connection between the template support frame and the ring beam of the present application; Figure 8 Fig. 4 is a schematic view of the roof gutter support frame of the present application; Figure 9 Fig. 5 is a schematic view of the positive wire sleeve of the present application; Figure 10 Fig. 6 is a schematic view of the shackle of the present application; Figure 11 Fig. 7 is a schematic view of the collar of the present application.

[0019] In the figure: 1, ring beam; 2, bearing module; 201, main suspension cable; 202, auxiliary suspension cable; 203, shackle; 204, lifting ring; 205, safety net; 206, steel pipe frame; 207, scaffold board; 3, template support frame; 301, vertical rod; 302, sweeping rod; 303, longitudinal horizontal rod; 304, horizontal scissors brace; 305, vertical scissors brace; 306, diagonal rod; 307, fixed fastener; 308, flat iron; 309, transverse horizontal rod; 310, adjustable support; 311, cushion layer; 4, conical shell template; 5, conical top platform beam plate; 6, conical shell reinforcement; 7, outer scaffold; 8, roof gutter support frame; 801, positive wire sleeve; 802, first reinforcement; 803, second reinforcement; 804, outer sleeve; 805, jump plate; 806, tripod; 9, hanging piece; 10, connecting rod; 11, nut; 12, guide groove; 13, collar; 14, ball; 15, rope groove; 16, limit pin; 17, rubber sleeve; 18, guide rod; 19, pressing plate; 20, spring; 21, insertion hole; 22, limit groove. DETAILED DESCRIPTION

[0020] The present application will be further described with reference to the drawings and specific embodiments. The embodiments of the present application are given for illustrative and descriptive purposes only and are not intended to be exhaustive or to limit the present application to the forms disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Embodiments are chosen and described in order to best explain the principles of the present application and its practical application to thereby enable others skilled in the art to best utilize the present application in various embodiments and with various modifications as are suited to the particular use contemplated. EMBODIMENTS

[0021] As Figures 1-11As shown, the present application provides a technical solution: a formwork support frame for silo cone shell construction, comprising a ring beam 1 and its internal bearing module 2 and formwork support frame 3, the bearing module 2 comprising a main suspension cable 201 and a secondary suspension cable 202, the surface of the main suspension cable 201 and the secondary suspension cable 202 being provided with a steel pipe frame 206 and a scaffold board 207, the surface of the main suspension cable 201 and the secondary suspension cable 202 and the surface of the steel pipe frame 206 and the scaffold board 207 being paved with a safety net 205, the formwork support frame 3 comprising a vertical rod 301, the lower part of the vertical rod 301 being provided with a floor sweeping rod 302, the outer surface of the vertical rod 301 being provided with a longitudinal horizontal rod 303, a transverse horizontal rod 309, a horizontal scissors brace 304, a vertical scissors brace 305 and an inclined rod 306, the top of the ring beam 1 being provided with a cone shell formwork 4, the top of the cone shell formwork 4 being provided with a cone top platform beam plate 5, the outer surface of the cone shell formwork 4 and the cone top platform beam plate 5 being provided with a cone shell reinforcement 6, the end of the main suspension cable 201 and the secondary suspension cable 202 being provided with a shackle 203, the shackle 203 comprising a hanging piece 9, the through hole of the hanging piece 9 being sleeved with a connecting rod 10, the outside of the connecting rod 10 being provided with a sleeve ring 13, the outer surface of the connecting rod 10 being provided with a guide groove 12, the inside of the sleeve ring 13 being rotatably provided with a ball 14.

[0022] The main suspension cable 201 is arranged above the secondary suspension cable 202, the outside of the shackle 203 is provided with a lifting ring 204, the hook part of the lifting ring 204 is anchored into the ring beam 1, the outer surface of the ring beam 1 is provided with an outer scaffold 7.

[0023] The steel pipe frame 206 and the scaffold board 207 are connected by iron wire binding, the steel pipe frame 206 and the scaffold board 207 are connected by iron wire with the main suspension cable 201 or the secondary suspension cable 202.

[0024] The bottom end of the vertical rod 301 is provided with a fixed fastener 307, the vertical rod 301 and the fixed fastener 307 are provided with a flat iron 308, the vertical rod 301 is installed on the node of the main suspension cable 201 and the secondary suspension cable 202 through the fixed fastener 307 and the flat iron 308.

[0025] The horizontal scissors brace 304 is provided with three rows of upper, middle and lower settings, the middle one is arranged in the upper layer of horizontal rods of the step distance where the lifting ring 204 is located, and is tightly arranged with the ring beam 1, the upper one is arranged in the horizontal rod of the lower part of the ring beam 1, and is tightly arranged with the ring beam 1, the lower one is arranged on the horizontal rod layer of the bottom part.

[0026] The vertical scissors support 305 is provided with four horizontal and vertical scissors supports, the horizontal scissors support 304 extends to the inner wall of the ring beam 1 and the inclined side wall of the conical shell formwork 4, the vertical scissors support 305 extends to the conical top platform beam plate 5, the ends of the longitudinal horizontal rod 303 and the transverse horizontal rod 309 are provided with adjustable supports 310, the ends of the adjustable supports 310 are provided with pads 311, and the longitudinal horizontal rod 303 and the transverse horizontal rod 309 are tightly pressed against the inner wall of the ring beam 1 through the pads 311.

[0027] The formwork support frame for the construction of the silo conical shell further comprises a roof gutter support frame 8, the roof gutter support frame 8 comprises a straight wire sleeve 801, a first steel bar 802 is welded to the outer surface of the straight wire sleeve 801, a second steel bar 803 is arranged in the straight wire sleeve 801, an outer sleeve 804 is arranged on the outer surface of the second steel bar 803, a tripod 806 is welded to the outer surface of the outer sleeve 804, and a jump board 805 is arranged on the top of the tripod 806.

[0028] The threaded part of one end of the connecting rod 10 is threadedly connected with a nut 11, the ball 14 and the guide groove 12 are annularly distributed with the central axis of the connecting rod 10 as the shaft, the outer surface of the ball 14 is arranged in the inner part of the guide groove 12, a rope groove 15 is formed in the outer surface of the sleeve ring 13, guide rods 18 are sleeved on the two sides of the sleeve ring 13, and the ends of the guide rods 18 extending to the rope groove 15 are fixedly connected with pressing plates 19.

[0029] The outer surface of the pressing plate 19 is fixedly connected with a spring 20, the end of the spring 20 away from the pressing plate 19 is fixedly connected to the inner wall of the rope groove 15, a limiting pin 16 is sleeved on one side of the upper part of the sleeve ring 13, the outer surface of the limiting pin 16 is fixedly connected with a rubber sleeve 17, an insertion hole 21 is formed in the upper part of the pressing plate 19, a limiting groove 22 is formed in the inner wall of the upper part of the rope groove 15, and the outer surface of the rubber sleeve 17 is matched with the inner surfaces of the insertion hole 21 and the limiting groove 22.

[0030] A construction method of a formwork support frame for the construction of a silo conical shell, comprising the following steps: S1 Hoisting ring pre-burial: hoisting rings 204 are pre-buried when pouring concrete in the lower ring beam, the hoisting ring 204 of the main suspension cable 201 is set to have a height of 21.9 m, the hoisting ring 204 of the auxiliary suspension cable 202 is set to have a height of 21.875 m, the height difference is 25 mm, and the hoisting ring 204 is anchored into the main reinforcement of the ring beam 1 and is fixed by spot welding; S2 Suspension cable installation: the main suspension cable 201 is installed first, the auxiliary suspension cable 202 is installed later, the two ends are connected with the hoisting ring 204 through the shackle 203, the length deviation of the cable is adjusted by clamping wooden pads or adjusting the steel wire rope at the shackle 203, and the double-layer safety net 205 is bound on the surface of the suspension cable, the safety net 205 is tightly spliced and fixed with the suspension cable; S3 erection of scaffolding: ground assembled steel pipe frame 206 and scaffolding 207 unit, tower crane hoisting to the suspension cable, using wire to connect the unit and the main and auxiliary suspension cable, after the installation of steel pipe frame 206 and scaffolding 207, two layers of safety net 205 are arranged on them; S4 erection of support frame: vertical rod 301 is locked in the main and auxiliary suspension cable node by fixing fastener 307 and flat iron 308, starting from the center four vertical rods 301, expanding and erecting to the four directions, arranging floor sweeping rod 302, longitudinal horizontal rod 303 and transverse horizontal rod 309, installing three horizontal scissors 304 (upper / middle / lower layers) and eight vertical scissors 305 (four in the horizontal direction and four in the vertical direction); S5 erection of formwork: conical shell formwork 4 is erected at an inclination of 26°, and conical top platform beam plate 5 is erected at the top of conical shell formwork 4; S6 reinforcement binding: conical shell reinforcement 6 is bound on the outer surface of conical shell formwork 4 and conical top platform beam plate 5; S7 concrete pouring: pouring in five times, i.e. lower ring beam + conical shell lower inclined plate, remaining inclined plate of conical shell, conical shell top + upper ring beam (preformed beam nest), platform beam, and platform plate; S8 dismantling of frame: dismantling is performed after the strength of the conical shell reaches 100%.

[0031] Working principle of the above embodiment: Suspension cable bearing system construction: hoisting ring 204 is pre-buried during the concrete pouring stage of ring beam 1, main suspension cable 201 (Φ32 steel core wire rope) and auxiliary suspension cable 202 (Φ28 steel core wire rope) are arranged in a double-layer net shape, with a spacing of 800mm, starting from the center line 400mm and symmetrically radiating, the main and auxiliary cables are connected to the hoisting ring 204 through shackles 203, the elevation difference between the two is 25mm (main cable 21.9m / auxiliary cable 21.875m), forming a tension coordination system, the cable length deviation is adjusted by thin steel plate clamping wooden pad or shackle 203, ensuring that the cable net naturally drops in the vertical plane, double-layer safety net 205 is laid on the surface of the suspension cable and bound and fixed, forming a falling prevention barrier.

[0032] Modular platform erection: steel pipe frame 206 and scaffolding 207 unit (4000x4000mm / 3000x3000mm) are pre-assembled on the ground, hoisted to the suspension cable node by tower crane, bound and connected between units using No.14 wire, and two layers of safety net 205 are additionally arranged on the surface to form a suspended working platform, the node of steel pipe frame 206 is accurately positioned with the intersection point of the main and auxiliary cables, providing a positioning reference for the subsequent vertical rod 301 of the support frame.

[0033] Space support frame forming: vertical rod 301 is locked to the main and secondary cable node by fixing fastener 307 and flat iron 308, forming a force transmission hub. Starting from the center four vertical rods 301, it expands outward to set up a frame network with a longitudinal and transverse spacing of 800 mm. The bottom is provided with a floor sweeping rod 302, which is 200 mm away from the main cable 200, connecting all vertical rods 301. The step distance is 1.2 m, and the longitudinal horizontal rod 303 and the transverse horizontal rod 309 are arranged. The end is tightly pressed against the inner wall of the ring beam 1 through the adjustable support 310 and the cushion layer 311, forming a boundary constraint, setting three horizontal scissors 304 (upper / middle / lower layers) and eight vertical scissors 305 (four in each direction), extending to the inner wall of the ring beam 1 and the inclined side wall of the conical shell formwork 4, enhancing the lateral stiffness of the frame, and the inclined rod 306 connects the vertical rod 301 and extends at least two step distances, optimizing the force flow transmission path.

[0034] Conical shell formwork 4 and concrete construction: The conical shell formwork 4 is supported on the support frame at an inclination of 26°. The panel uses 15 mm plywood, and the main and secondary joists use Φ48×3.0 mm steel pipes and 40×80 mm square wood, respectively. After the conical top platform beam plate 5 is supported synchronously, the conical shell reinforcement 6 is bound, and the concrete is poured in five times: lower ring beam + conical shell lower inclined plate → conical shell remaining inclined plate → conical shell top + upper ring beam (reserved beam nest) → platform beam → platform plate. 400 mm inclined layered vibration is used to avoid structural deformation.

[0035] System dismantling and recycling: The conical shell concrete strength reaches 100% after the dismantling operation, and the dismantling operation procedure is as follows: remove the beam side formwork → remove the plate bottom formwork → remove the beam bottom formwork → remove the support frame → remove the warehouse floor safety net → remove the main cable → remove the secondary cable → remove the inner and outer cantilever frame, which is the cantilever construction platform of the lower ring beam.

[0036] Wherein, by the disengaging buckle 203, when installing the disengaging buckle 203, first pull the connecting rod 10 to make its threaded end away from the corresponding through hole of the hanging piece 9, make enough operation gap between the connecting rod 10 and the hanging piece 9, so as to hang the hanging piece 9 on the pre-buried hanging ring 204, then pass the loop of the cable end through the connecting rod 10, and then pass the threaded end of the connecting rod 10 back through the through hole of the hanging piece 9, and fasten by the nut 11, so that the disengaging buckle 203 can be reliably hung on the hanging ring 204, then adjust the loop, embed it into the rope groove 15 of the sleeve ring 13, and place it between the two pressing plates 19, during the embedding process of the loop, the pressing plates 19 are extruded to move to both sides, and the spring 20 is compressed to store energy, at this time, the restoring force of the spring 20 makes the two pressing plates 19 preliminarily clamp the loop, and limits the loop in the rope groove 15, then push the limiting pin 16 to pass through the insertion hole 21 on the two pressing plates 19 in turn, and finally insert the end into the limiting groove 22, so as to realize the secondary limiting of the loop, and ensure that it is stably fixed on the sleeve ring 13, the rubber sleeve 17 on the limiting pin 16 can increase the friction to prevent the loosening of the limiting pin 16, during the construction work, when the main suspension cable 201 and the auxiliary suspension cable 202 shake due to load change, the loop will drive the sleeve ring 13 to move axially along the connecting rod 10, at this time, the ball 14 rolls in the guide groove 12, since the rolling friction resistance is far less than the sliding friction, the wear of the cable is significantly reduced, and the service life is prolonged.

[0037] Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art and related fields without creative labor shall belong to the scope of protection of the present application. The structures, devices and operation methods not specifically described and explained in the present application, if not specially described and limited, are implemented according to the conventional means in the art.

Claims

1. A formwork support frame for silo cone shell construction, comprising a ring beam (1) and a bearing module (2) therein and a formwork support frame (3), characterized in that: The bearing module (2) comprises a main suspension cable (201) and an auxiliary suspension cable (202), the surfaces of the main suspension cable (201) and the auxiliary suspension cable (202) are provided with a steel pipe frame (206) and a scaffolding board (207), the surfaces of the main suspension cable (201) and the auxiliary suspension cable (202) and the surfaces of the steel pipe frame (206) and the scaffolding board (207) are paved with a safety net (205), the formwork support frame (3) comprises a vertical pole (301), the lower part of the vertical pole (301) is provided with a sweeping pole (302), the outer surface of the vertical pole (301) is provided with a longitudinal horizontal pole (303), a transverse horizontal pole (309), a horizontal scissors brace (304), a vertical scissors brace (305), and a vertical horizontal pole (306). 05) and an inclined rod (306), the top of the ring beam (1) is provided with a cone shell template (4), the top of the cone shell template (4) is provided with a cone top platform beam plate (5), the outer surfaces of the cone shell template (4) and the cone top platform beam plate (5) are provided with cone shell steel bars (6), the ends of the main suspension cable (201) and the auxiliary suspension cable (202) are provided with shackles (203), the shackles (203) include hangers (9), the through holes of the hangers (9) are provided with connecting rods (10), the outside of the connecting rods (10) are provided with collars (13), the outer surface of the connecting rods (10) is provided with guide grooves (12), and the inside of the collars (13) is provided with balls (14) for rotation.

2. A formwork support frame for silo cone shell construction according to claim 1, characterized in that: The main suspension cable (201) is arranged above the auxiliary suspension cable (202); a lifting ring (204) is provided on the outside of the shackle (203); a hook portion of the lifting ring (204) is anchored in the ring beam (1); and an external scaffold (7) is provided on the outer surface of the ring beam (1).

3. The formwork support frame for silo cone shell construction according to claim 1, characterized in that: The steel pipe frame (206) and the scaffolding board (207) are connected by iron wire binding, and the steel pipe frame (206) and the scaffolding board (207) are connected by iron wire binding with the main suspension cable (201) or the auxiliary suspension cable (202).

4. The formwork support frame for silo cone shell construction according to claim 1, characterized in that: A fixing fastener (307) is provided at the bottom end of the vertical pole (301), a flat iron (308) is provided between the vertical pole (301) and the fixing fastener (307), and the vertical pole (301) is installed on the node of the main suspension cable (201) and the auxiliary suspension cable (202) through the fixing fastener (307) and the flat iron (308).

5. The formwork support frame for silo cone shell construction according to claim 1, characterized in that: The horizontal scissors brace (304) is provided with three sections, namely, upper, middle and lower sections. The middle section of the horizontal scissors brace (304) is provided in a horizontal rod layer above the step where the hanging ring (204) is located, and is pressed against the ring beam (1). The upper section of the horizontal scissors brace (304) is provided in a horizontal rod at the lower part of the ring beam (1), and is pressed against the ring beam (1). The lower section of the horizontal scissors brace (304) is provided on the horizontal rod layer at the bottom.

6. The formwork support frame for silo cone shell construction according to claim 1, characterized in that: The vertical scissors brace (305) is provided with four transverse paths and four longitudinal paths, the horizontal scissors brace (304) extends to the inner wall of the ring beam (1) and the oblique side wall of the cone shell formwork (4), the vertical scissors brace (305) extends to the cone top platform beam plate (5), the ends of the longitudinal horizontal rods (303) and the transverse horizontal rods (309) are provided with adjustable top supports (310), the ends of the adjustable top supports (310) are provided with cushion layers (311), and the longitudinal horizontal rods (303) and the transverse horizontal rods (309) are pressed tightly against the inner wall of the ring beam (1) through the cushion layers (311).

7. The formwork support frame for silo cone shell construction according to claim 1, further comprising a silo roof gutter support frame (8), characterized in that: The silo roof gutter support frame (8) comprises a positive thread sleeve (801), a first steel bar (802) is welded to the outer surface of the positive thread sleeve (801), a second steel bar (803) is arranged inside the positive thread sleeve (801), an outer sleeve (804) is arranged on the outer surface of the second steel bar (803), a tripod (806) is welded to the outer surface of the outer sleeve (804), and a springboard (805) is arranged on the top of the tripod (806).

8. The formwork support frame for silo cone shell construction according to claim 1, characterized in that: The threaded portion at one end of the connecting rod (10) is threadedly connected to a nut (11), the balls (14) and the guide groove (12) are distributed in an annular manner with the central axis of the connecting rod (10) as the axis, the outer surface of the balls (14) is arranged inside the guide groove (12), the outer surface of the collar (13) is provided with a rope groove (15), both sides of the collar (13) are sleeved with guide rods (18), and one end of the guide rod (18) extending to the rope groove (15) is fixedly connected to a pressure plate (19).

9. The formwork support frame for silo cone shell construction according to claim 8, characterized in that: The outer surface of the pressure plate (19) is fixedly connected to a spring (20), and one end of the spring (20) away from the pressure plate (19) is fixedly connected to the inner wall of the rope groove (15). A limit pin (16) is sleeved on one side of the upper part of the ring (13), and a rubber sleeve (17) is fixedly connected to the outer surface of the limit pin (16). The upper part of the pressure plate (19) is provided with a socket (21), and the inner wall of the upper part of the rope groove (15) is provided with a limit groove (22). The outer surface of the rubber sleeve (17) matches the inner surfaces of the socket (21) and the limit groove (22).

10. A construction method for a formwork support frame for silo cone shell construction according to claims 1-9, characterized in that: The following steps are involved: S1 Pre-embedded lifting ring: When pouring concrete on the lower ring beam, pre-embed the lifting ring (204). The elevation of the lifting ring (204) of the main suspension cable (201) is set to 21.9m, and the elevation of the lifting ring (204) of the auxiliary suspension cable (202) is set to 21.875m, with a height difference of 25mm. The hook of the lifting ring (204) is anchored into the main reinforcement of the ring beam (1) and fixed by spot welding. S2 Suspension cable installation: The main suspension cable (201) is installed first, and the auxiliary suspension cable (202) is installed later. The two ends are connected to the lifting ring (204) through the shackle (203). The cable length deviation is adjusted by sandwiching a thin steel plate with a square wood pad or interlacing the wire rope at the shackle (203). A double layer of safety net (205) is tied on the surface of the suspension cable. The safety net (205) is tightly spliced ​​and fixed to the suspension cable. S3 Scaffolding board erection: Assemble the steel pipe frame (206) and scaffolding board (207) units on the ground, hoist them onto the suspension cables with a tower crane, tie the units to the main and auxiliary suspension cables with wire, and after the steel pipe frame (206) and scaffolding board (207) are installed, set two layers of safety nets (205) on top; S4 Support frame erection: The vertical poles (301) are locked at the main and secondary suspension cable nodes through the fixing fasteners (307) and the flat iron (308). Starting from the four central vertical poles (301), the frame is extended to the surrounding areas, and the sweeping poles (302), longitudinal horizontal poles (303), and transverse horizontal poles (309) are arranged. Three horizontal scissor braces (304) and eight vertical scissor braces (305) are installed. S5 Formwork support: The cone shell formwork (4) is supported at an inclination angle of 26°, and the top of the cone shell formwork (4) is supported by the cone top platform beam (5); S6 Rebar tying: Tie the cone shell reinforcement (6) on the outer surface of the cone shell formwork (4) and the cone top platform beam plate (5); S7 Concrete pouring: It is poured in five steps, namely, lower ring beam + lower inclined plate of cone shell, remaining inclined plates of cone shell, top of cone shell + upper ring beam, platform beam, and platform plate; S8 Frame dismantling: Dismantling operation will be carried out after the cone shell strength reaches 100%.

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