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CN-121976610-A - Combined open-close space structure with liftable vertical tuning vibration damping substructure

CN121976610ACN 121976610 ACN121976610 ACN 121976610ACN-121976610-A

Abstract

The invention belongs to the technical field of disaster prevention and reduction of civil engineering and space structures, and particularly relates to a combined type open-close space structure with a liftable vertical tuning vibration damping substructure. The device mainly comprises a petal mass plate (1), a petal connecting short rod (2), a rotating connecting rod (3), a hinged joint (4), a bottom driving circular ring (5), a vertical connecting rod (6), a small fan-shaped driving plate (7), a small fan-shaped supporting circular ring (8), a bottom large circular ring (9), an upper small circular ring (10), a double inclined supporting rod (11), a net shell structure (22), a radial main rod (12), a circumferential auxiliary rod (13), a conical web member (14), a steel cable (15), a nitrogen spring (16), a viscous damper (17), a middle small circular ring (18), a vertical connecting rod pin roll (19), a stainless steel pin roll (20) and a wear-resistant polyurethane bushing (21). The outside is the petal structure of rigidity class, and a plurality of petal quality boards are connected with the short pole of connection through articulated node, and the short pole of connection is connected with rotatory connecting rod, and rotatory connecting rod is fixed on two diagonal bracing poles, can rotate. The petals can move outwards and rotate around the shaft through the driving device to realize opening and closing, the small circles in the middle also have opening and closing functions, the small circles are driven by the circular rings at the bottom to realize radial in-situ rotation of a certain angle around the small circles to realize opening and closing, meanwhile, the small circles can be lifted by hanging steel ropes around the small circles, the steel ropes are connected with nitrogen springs and viscous dampers in series, and the small circles are combined into a single pendulum structure to realize TMD (transition metal oxide semiconductor) functions.

Inventors

  • LIU WENBO
  • HE HAOXIANG
  • CHENG XU
  • LI SHUYANG

Assignees

  • 北京工业大学

Dates

Publication Date
20260505
Application Date
20260318

Claims (8)

  1. 1. A combined type opening and closing space structure with a liftable vertical tuning vibration damping substructure is characterized by comprising a petal mass plate (1), a petal connecting short rod (2), a rotary connecting rod (3), a hinged joint (4), a bottom driving circular ring (5), a vertical connecting rod (6), a small fan-shaped driving plate (7), a small fan-shaped supporting circular ring (8), a bottom large circular ring (9), an upper small circular ring (10), a double inclined supporting rod (11), a net shell structure (22), a radial main rod (12), a circular auxiliary rod (13), a conical web member (14), a steel cable (15), a nitrogen spring (16), a viscous damper (17), a vertical connecting rod (6) and a vertical vibration damping substructure, wherein the structure is formed by a plurality of vertical tuning vibration damping substructures, The petal mass plate (1), the petal connecting short rod (2), the rotary connecting rod (3), the hinge joint (4), the stainless steel pin shaft (20) and the wear-resistant polyurethane bushing (21) form a petal mass opening and closing main body to realize the outward opening and closing function of external petals, the hinge joint (4), the vertical connecting rod (6), the vertical connecting rod pin shaft (19), the small sector driving plate (7), the small sector supporting circular ring (8) and the middle small circle (18) form a small circle opening and closing sub-structure to realize the small sector rotating and opening and closing around the radial direction in situ, the bottom large circular ring (9), The upper small circular ring (10), the double inclined support rods (11), the net shell structure (22), the radial main rod (12), the annular auxiliary rod (13) and the conical web member (14) form an integral framework to provide stable support of the integral structure, the steel cable (15), the nitrogen spring (16) and the viscous damper (17) form a serial hoisting cable system, the small circular sub-structure is matched to form a single pendulum to provide a tuning vibration reduction function, when the main body structure is subjected to wind load and earthquake action to generate vertical vibration, the small circular sub-structure performs single pendulum motion opposite to the main body vibration direction along the steel cable (15), the nitrogen spring (16) is pulled to stretch and retract to push the piston of the viscous damper (17), vibration energy is dissipated by means of a silicon-based damping medium, the nitrogen spring (16) can accurately and finely adjust the vertical rigidity within the range of 50-200kN/m according to dynamic working conditions, in addition, the length of the steel cable (15) can be arbitrarily stretched, the vertical frequency and the horizontal frequency can be adjusted according to actual flexibility, the stainless steel pin (20) is used for vibration reduction, The wear-resistant polyurethane bushing (21) forms a hinged joint (4) for providing a rotating function and improving durability, the hinged joint (4) provides a rotating function, is arranged on a petal quality plate (1) and is connected with a petal connecting short rod (2), a rotating connecting rod (3) is arranged on a double-inclined supporting rod (11) in a bearing way and is coupled with the petal connecting short rod (2) for providing an outward opening and closing function, a bottom driving circular ring (5) is arranged at the lower part of a small round sub-structure and can provide driving force, an overhanging gear is coupled with a vertical connecting rod (6), the vertical connecting rod (6) is coupled with an overhanging part of a small fan-shaped driving plate (7) through a vertical connecting rod pin shaft (19) to form a whole, one end of the vertical connecting rod is built on the small fan-shaped supporting circular ring (8), the small fan-shaped driving plate (7) can rotate around a radial direction in situ to realize opening and closing, the bottom large circular ring (9) is arranged at the lower part, the upper small circular ring (10) is arranged at the upper part, the middle is a net shell structure (22) and is formed by a radial main rod (12), the annular auxiliary rod (13) and the conical web member (14) are formed in a direct insertion mode to provide supporting force, the opening and closing actions of the structure are completed cooperatively by all parts, when the structure is opened, the petal quality plate (1) is connected with the short rod (2) through petals, the rotary connecting rod (3) moves outwards and rotates through the hinge joint (4), meanwhile, the small fan-shaped driving plate (7) in the small circle opening and closing substructure is opened and closed around the radial rotation under the action of the bottom driving circular ring (5) and the action of the transmission force of the vertical connecting rod (6), and the steel cable (15) descends synchronously, so that the structure is opened. When the structure is closed, the petal quality plate (1) rotates and is recycled to the whole framework, the small circle opening and closing substructure ascends through the steel cable (15), and meanwhile the small fan-shaped driving plate (7) realizes radial rotation and closing under the action of the bottom driving circular ring (5), and finally the structure is closed.
  2. 2. The combined type open-close space structure with the liftable vertical tuning vibration damping substructure is characterized in that a galvanized high-strength steel wire rope is selected as the steel cable (15), the elastic modulus is not lower than 190GPa, the tensile strength is not lower than 1850MPa, the ratio of the diameter to the hoisting swing length is 1/200-1/100, an anti-corrosion grease and PE protective sleeve is coated on the surface, the thickness of the protective sleeve is 1/3-1/2 of the diameter of the steel cable (15), the length of the steel cable (15) can be arbitrarily stretched, the vertical frequency and the horizontal frequency can be flexibly adjusted according to practice, the nitrogen spring (16) adopts alloy structural steel, the rigidity adjustment range is 50-200 kN/m, the diameter ratio of the outer diameter to the steel cable (15) is 5-8, the working temperature range is minus 20 ℃ to minus 80 ℃, the fatigue life is not less than 10 6 times of circulation, the steel cable is connected in series between the steel cable (15) and the damper (17), the shell of the viscous damper (17) is low alloy high-strength steel, the damping coefficient is 100-250N, the ratio of the outer diameter to the nitrogen spring (16) is 1.25 degrees, the inner diameter to the vibration damping medium is not more than the silicon-based, the vibration damping medium is filled, the vibration damping medium is more than the accurate deviation is not more than the 1.55, and the sealing vibration damping medium is more than the inner than the sealing vibration damping medium is installed.
  3. 3. The combined type open-close space structure with the liftable vertical tuning vibration damping substructure is characterized in that Q235B carbon structural steel is selected as the bottom driving circular ring (5), the elastic modulus is not lower than 200GPa, the tensile strength is not lower than 370MPa, the diameter ratio of the diameter to the middle small circle (18) is 1.05-1.20, the outer tooth groove modulus is matched with the vertical connecting rod (6), the tooth groove spacing is 1/8 of the circumference of the circular ring, synchronous meshing transmission is realized, the vertical connecting rod (6) is made of stainless steel, the elastic modulus is not lower than 200GPa, the tensile strength is not lower than 520MPa, the diameter to self length ratio is 1/28-1/24, the upper end and the lower end are respectively connected with the small fan-shaped driving plate (7) and the bottom driving circular ring (5) through the vertical connecting rod pin shaft (19) in a meshed mode, and the shear strength of a connecting node is not lower than 300MPa.
  4. 4. The combined type open-close space structure with the liftable vertical tuning vibration damping substructure is characterized in that the small fan-shaped driving plate (7) is made of high-strength alloy steel, the elastic modulus is not lower than 200GPa, the tensile strength is not lower than 600MPa, the radius ratio of the radial length to the middle small circle (18) is 0.9-1.0, the radial length ratio of the tail extension rod to the small fan-shaped driving plate (7) is 1/3-1/2, the small fan-shaped supporting circular ring (8) is made of carbon structural steel, the tensile strength is not lower than 370MPa, the diameter ratio of the diameter to the middle small circle (18) is 1.03-1.08, 8 groups of mounting holes are uniformly processed on the upper surface, the diameter ratio of the aperture to the extension rod is 1.05-1.1, and a mounting adjusting space is reserved.
  5. 5. The combined type open-close space structure with the liftable vertical tuning vibration damping substructure is characterized in that the bottom big circular ring (9) and the upper small circular ring (10) are made of low-alloy high-strength steel, the elastic modulus is not lower than 200GPa, the tensile strength is not lower than 490MPa, the diameter of the bottom big circular ring (9) is consistent with the span of the whole roof, the thickness and the diameter ratio of the bottom big circular ring are 1/150-1/120, connecting interfaces of double inclined support rods (11) are reserved, the interface interval and the circular ring circumference ratio are 1/20, the diameter ratio of the diameter of the upper small circular ring (10) to the diameter of the bottom big circular ring (9) is 1/2.8-1/2.2, the thickness and the diameter ratio of the bottom big circular ring (9) are the same as the diameter ratio of the bottom big circular ring (8), and the small sector support circular ring (8) are precisely coupled to be stressed cooperatively.
  6. 6. The combined type opening and closing space structure with the liftable vertical tuning vibration damping substructure is characterized in that the petal quality plate (1) is made of high-strength aluminum alloy, the elastic modulus is not lower than 70GPa, the tensile strength is not lower than 290MPa, the ratio of the radial length to the whole roof span is 1/5-1/3, the ratio of the thickness to the radial length is 1/180-1/140, radial reinforcing ribs are arranged on the surface of the plate body, the ratio of the rib plate thickness to the petal plate body thickness is 1.2-1.5, the petal connecting short rods (2) and the rotating connecting rods (3) are made of high-strength alloy steel, the elastic modulus is not lower than 200GPa, the tensile strength of the petal connecting short rods (2) is not lower than 520MPa, the tensile strength of the rotating connecting rods (3) is not lower than 550MPa, the ratio of the length of the petal connecting short rods (2) to the radial length is 1/4-1/2, the ratio of the diameter to the whole roof span is 1/18-1/14, the ratio of the cross section area of the connecting parts to the body is larger than 1.2, the ratio of the connecting parts to the main body is 1.3, the ratio of the length of the rotating connecting rods (3) to the petal connecting rods) to the rotating connecting rods (3) to the rotating rods to the tensile strength are not lower than 550MPa, the tensile strength is not lower than 550MPa, and the tensile strength is 1, and the high precision of the transmission precision is 1, and the transmission precision is ensured.
  7. 7. The combined type open-close space structure with the liftable vertical tuning vibration damping substructure according to claim 1 is characterized in that the double inclined supporting rods (11) are made of stainless steel, the elastic modulus is not lower than 200GPa, the tensile strength is not lower than 520MPa, the center distance ratio of the length to the upper and lower circular rings is 1.05-1.20, the diameter to the length ratio of the diameter to the supporting rods is 1/35-1/30, the circular rings are connected through high-strength bolts, the diameter ratio of the bolts to the supporting rods is 1/2-3/5, the mounting verticality deviation is not greater than 2mm/m, the full circumference radial offset is not greater than 3mm, the space net shell structure (22) is made of stainless steel rods, the mesh side length to the upper and lower circular rings is 1/7~1, the diameter to the diameter ratio of the main rod (12) to the auxiliary rod (13) is 1.2-1.5, the diameter ratio of the web member (14) to the main rod (12) is 0.7-0.9, the rod member is connected in a direct inserting mode, the inserting depth to the diameter ratio of the web member is 1.5-2.0, and the overall density is not greater than 1/5.
  8. 8. The combined type open-close space structure with the liftable vertical tuning vibration damping substructure according to claim 1, wherein the hinge joint (4) is composed of a stainless steel pin shaft (20) and a wear-resistant polyurethane bushing (21), the tensile strength of the pin shaft (20) is not lower than 600MPa, the Shore hardness is 85-90D, the diameter ratio of the pin shaft (20) to the petal connecting short rod (2) is 4/5-5/6, the thickness of the wear-resistant polyurethane bushing (21) is 1/4-1/3 of the diameter of the pin shaft (20), wear-resistant grease is smeared after assembly, and flexible rotation among parts is guaranteed.

Description

Combined open-close space structure with liftable vertical tuning vibration damping substructure Technical Field The invention belongs to the technical field of disaster prevention and reduction of civil engineering and space structures, and particularly relates to a combined type open-close space structure with a liftable vertical tuning vibration damping substructure. Background In the field of civil engineering, the traditional space structure is widely applied to large-span structures (such as gymnasiums, exhibition centers, airport terminal buildings and the like) because of the good space coverage capability and the soft large-span characteristic, and the design of the traditional space structure mainly develops around the gist of safety, stability and bearing, so that various structural forms and a mature technical system are formed. The traditional space structure mainly comprises a grid structure, a net shell structure, a grid structure and a truss structure, wherein the grid structure is formed by connecting a plurality of rods through nodes in a triangular grid mode, a quadrilateral grid mode and the like, the whole structure is strong in integrity, uniform in stress and single in function, the grid structure can only be used as a fixed roof for supporting, the grid structure is a space grid structure in a curved surface mode and has bearing and aesthetic functions, the grid structure is suitable for a large-span curved surface building, the problems of fixed form and incapability of opening and closing exist, the truss structure is a plane or space system consisting of chord members and web members, the dead weight is light, the span is large, an independent device is additionally arranged, the shock resistance and vibration reduction is low in structural integration, the rigid frame structure is formed by rigidly connecting beams and columns, the grid structure is suitable for a medium-span building, the stress concentration is easy to generate under a large-span scene, and the vibration control effect is limited. However, the traditional space structure also has partial functional limitations, and the main limitations in terms of structural modeling, design requirements and the like include 1 that the structural form is monotonously fixed, and once the construction is completed, the space form and the function cannot be dynamically adjusted, so that the requirement of a single use scene can be met. 2. The bearing guide design is that the general design takes the effects of resisting constant load, live load, wind load and earthquake as core targets, the stress and stability are emphasized, the functional diversity and flexibility are not considered enough, 3, the rigidity characteristic is single, the support system is designed to be fixed rigidity, the bearing is realized by depending on the material strength and the structural configuration, and the dynamic adaptation capability is lacked. In addition, with the gradual upgrade of civil engineering materials, design and construction technology and social demands, the traditional space structure cannot fully meet the daily and lunar demands in terms of use functions and performances, and the main problems include that 1, the function dimension is single, the structure has only a supporting and shielding basic function, the function switching of 'closed and open' cannot be realized, the structure is difficult to adapt to the use demands of modern buildings for multiple functions and scenes (such as space conversion of sports events and literature performances, emphasis of landscape and multi-scene culture joint performance), 2, vibration reduction design separation is carried out, in order to improve vibration resistance and wind resistance, a Tuning Mass Damper (TMD), a viscoelasticity damper and other devices are additionally arranged, the structure complexity and the construction cost are increased, the synergy of the independent damping device and the main structure is poor, 3, the rigidity suitability is poor, the fixed rigidity design cannot respond to dynamic working conditions such as wind load and temperature change, stress concentration easily occurs under large-span or suspension scenes, the wind-induced vibration inhibition effect is poor, the structure is difficult to consider the dual purposes of 'supporting stability' and 'controllable', and 4, the structure is low in space utilization rate and the structure cannot be adjusted to the environment-friendly and environment-friendly lighting conditions according to the modern building requirements. In recent years, to make up for the functional limitations of the traditional space structure, an open-close space structure has been generated, which becomes an important innovation direction of a large-span building, but the prior art still has unresolved core pain points. The open-close type space structure or the open-close type space structure has the main characteristics and function