344 results about "Membrane structure" patented technology

The invention relates to the technical field of material nondestructive testing, and discloses a membrane structure welding seam defect detection method based on image recognition, which is used for solving the problems of low defect segmentation accuracy and incapability of effectively recognizing internal defects caused by continuous image gray change of lap welding seams of unequal-thickness flexible materials in a traditional method. The method comprises the following steps: firstly, collecting an original image of the lap weld of the unequal-thickness flexible material, carrying out gray conversion, analyzing thickness gradient distribution, adjusting a gray value, carrying out region segmentation to lock a weld range, extracting potential defect edge features to form a candidate region, and carrying out classified verification to confirm internal defects. Aiming at the problem of low defect segmentation accuracy caused by continuous change of image gray in the prior art, the method improves the defect identification precision through segmented mapping and boundary tracking logic, and is suitable for membrane structure engineering quality control.

The invention relates to the technical field of ETFE film testing, and discloses an ETFE film structure life prediction method and system based on machine learning, and the method comprises the steps: carrying out the standardization preprocessing of the cyclic load fatigue data of an ETFE film structure in a biaxial stress state, and obtaining a standard feature vector; performing membrane structure geometric weight distribution on the standard feature vector to obtain a weighted feature vector; performing multi-time scale damage feature extraction based on the weighted feature vector to obtain a fused damage feature; inputting the fused damage features into a fatigue damage evolution physical constraint embedder for constraint calculation to obtain physical constraint damage features; bayesian probability life prediction is carried out on the physical constraint damage features, and a fatigue life prediction value of the ETFE film structure is obtained.According to the method, key damage parameters of different deformation stages can be recognized in a self-adaptive mode, the characterization precision of the fatigue behavior of the film structure is remarkably improved, and the life prediction accuracy of the ETFE film structure is improved.

The utility model discloses a novel air rib type inflatable membrane structure which comprises a main body structure formed by combining a plurality of independent air rib inflatable columns side by side from front to back, a grid drawstring structure is laid outside each air rib inflatable column, and each grid drawstring structure is composed of an axial drawstring, an annular drawstring and an inclined drawstring. The grid drawstring structure is provided with connection fixing points on the front side and the rear side of the air rib inflation columns, and the adjacent air rib inflation columns are connected through the connection fixing points. The limitation of the tensile strength of the PVC film material is broken through through the inflatable column external constraint drawstring net, and a mixed structure form of internal air pressure support and external drawstring net pulling is formed, so that the structure form is more stable, and the load resisting capacity is high; the air rib inflatable column structure of the external constraint drawstring net relieves the local stress concentration of the inner arc generated by the stress characteristic of the arc arch column, and the safety of the whole structure is effectively improved. And a modularized assembly structure form is adopted, so that disassembly, assembly and movement are convenient.

The invention provides a water-gas interface gas collecting device and a monitoring method, and the collecting device comprises a floating part which is constructed to be annular and floats on a liquid surface; the framework extends upwards from the floating part; the membrane structure is arranged on the framework and is suitable for enclosing a flux box with a top opening with the framework part and the floating part; the zero gas supply unit is suitable for supplying zero gas to a water-gas interface positioned in the flux box, so that to-be-detected gas from the water-gas interface moves upwards; and the collection unit is arranged at the upper part of the flux box and is suitable for collecting mixed gas containing zero gas and gas to be detected.

The invention relates to the technical field of architectural membrane testing, and provides architectural membrane structure tearing strength testing equipment which comprises a sample table, a width adjusting module, a clamping module, a length adjusting module, a controller and a winding roller, the controller and the winding roller are arranged at the two ends of the sample table respectively, and a sample is wound on the surface of the winding roller; a rectangular ruler frame in the width adjusting module is in threaded connection with a two-way screw, an air cylinder in the clamping module is fixedly arranged between a clamping piece and an L-shaped frame, the L-shaped frame movably sleeves the lower portion of the rectangular ruler frame, a one-way screw in the length adjusting module is arranged above a sample table, a movable frame is in threaded connection with the one-way screw, and a first cutter body is arranged below the movable frame. Transverse rods are fixedly arranged on the two sides of the movable frame and penetrate through the surface of the L-shaped frame, the two sets of clamping modules are symmetrically distributed on the two sides of the first cutter body, standardization and automation of the whole process of sample preparation, tearing testing and data collection of the building film tearing testing are achieved, and the building film tearing testing device has the advantages of being high in sample manufacturing efficiency and high in testing precision.

The present invention discloses a method for detecting cyclical gas injection within a double-membrane structure within an underground rock cavern gas storage cavity. The method comprises the following steps: 1. constructing the double-membrane structure on the surrounding rock mass; 2. detecting gas injection between the inner and outer membrane layers; and 3. injecting and detecting compressed air within the cavity. The present invention detects the cyclical gas injection and degassing within the double-membrane structure, minimizing damage to the double-membrane structure and thereby improving the durability and safety of the double-membrane sealing structure.

The invention discloses a high-storage-ratio folding method for a large conical film structure, and belongs to the technical field of space debris removal and satellite light shields. The problems that an existing plane deorbit sail is poor in attitude stability and low in deorbit efficiency are solved. Comprising the following steps: S1, drawing equidistant circumferential folding lines on a conical film structure, wherein the circumferential folding lines comprise a circumferential ridge line and a circumferential valley line; s2, circumferential folding is carried out, axial compression is carried out along the axis of the cone, and then circumferential contraction is carried out; and S3, folding from a cone to a cylinder. The three-dimensional conical film sail can be folded into the three-dimensional conical film sail which is high in posture stability, relatively high in unfolding reliability and capable of correcting the posture, and the folding efficiency is high.

The utility model relates to a high-sealing anti-corrosion reverse hanging membrane structure, which belongs to the technical field of reverse hanging membrane structures and comprises no less than two gantry steel structures, and anti-corrosion reverse hanging membrane bodies are fixed in the no less than two gantry steel structures through fixing belts. According to the high-sealing anti-corrosion reverse hanging membrane structure, through the arrangement of the telescopic assembly, the at least two gantry steel structures can be compressed and folded, an open space is vacated to facilitate later cleaning of the interior of a sewage pool, and the at least two gantry steel structures are located on the outer side of the sewage pool; two hand wheels on the right side can be twisted to drive two ground piles to rotate in two connecting blocks and move upwards to move out of the interior of the foundation, at the moment, at least two telescopic assemblies are compressed and shortened, at least two gantry steel structures move leftwards, and at the moment, the telescopic assemblies are compressed and shortened; then, an open space is formed on the outer side of the right side of the sewage pool, so that the interior of the sewage pool is cleaned.

The invention provides an air inflation membrane structure environment air circulation system and a self-adaptive control method thereof, and relates to the technical field of air membrane structures. The system comprises an inflatable membrane, a flexible and deformable connecting piece and an air circulation device, a first opening is formed in the inflatable membrane, the connecting piece is connected with and surrounds the first opening in a sealed mode, and the other end of the connecting piece is connected with the air circulation device through a sealed clamping structure; the air circulation device comprises a valve body assembly, a driver drives a valve plate to control opening and closing of the second opening, and the first opening, the connecting piece and the second opening jointly define an air circulation channel. According to the control method, on the basis of environment characteristics obtained by the sensor module, opening and closing of the valve body are controlled in a self-adaptive mode according to three-level priorities of fire danger, structure safety and environment adjustment. The problems that an existing system is poor in air tightness, a membrane material is prone to being torn, and self-adaptive adjustment cannot be achieved are solved, air tightness improvement, membrane material safety enhancement and efficient environment adjustment are achieved, and remarkable practical value is achieved.

The invention discloses a construction method of a curved-surface cylindrical cable-membrane composite structure system.The cable-membrane composite structure system is of a curved-surface cylinder structure with the middle concave inwards, a circle of the upper portion of the cylinder is of a steel truss structure, the upper portion of a cable net is connected with the steel truss structure, the cable net comprises a plurality of radial cables and annular cables, and the radial cables and the annular cables are arranged in a crossed mode to form grids; the construction method comprises the following steps that S1, the steel truss structure is installed, and an initial frame is formed; s2, an operation platform and a lifting tool frame are arranged, and a lifting point is set; s3, the radial cable and the lifting tool frame are connected and lifted to be separated from the ground; s4, a cable net lifting and tensioning scheme is determined, specifically, the cable net is lifted to the designed height in a staged mode, annular cables are synchronously installed, and radial cables are symmetrically tensioned in a staged and batched mode; s5, synchronously performing simulation calculation and analysis; and S6, based on the simulation calculation and analysis result, lifting and tensioning of the cable net are conducted, and finally cable net forming is completed. And S7, a membrane structure is installed, and the tension of the cable net is adjusted.

The invention provides a production method of a light-transmitting sound-absorbing module suitable for an air film structure, and belongs to the technical field of building sound absorption and noise reduction. Then borate flame retardant treatment is carried out; forming a plate-shaped sound absorber by adopting a hot press molding process; then micro-pore distribution parameters are calculated, and the transparent micro-pore polymer film is compounded with the sound absorber through ultrasonic welding; performing waterproof and mildew-proof treatment on a fluorocarbon water repellent and a quaternary ammonium salt mildew preventive; after accurate drying, the acoustic performance of the composite material is analyzed by applying a pre-trained neural network model, a cutting scheme is optimized, and hot edge sealing treatment is carried out; and finally, testing the sound absorption performance of the product at the frequency band of 100Hz to 5000Hz by using an acoustic impedance tube, and screening qualified products meeting the standard, thereby solving the technical problem that a gas film structure building in the prior art cannot realize high light transmittance and high sound absorption performance at the same time.

The utility model relates to a membrane structure and a water purification device, and relates to the technical field of water purification treatment. The diaphragm structure comprises a diaphragm group and at least one separator, the diaphragm group comprises at least two layers of diaphragm bodies, the at least two layers of diaphragm bodies are sequentially stacked, and the front surfaces of the two adjacent layers of diaphragm bodies are oppositely arranged to form a water inlet runner; the membrane body is provided with a first side and a second side which are oppositely arranged in a first direction, the first side is provided with a raw water inlet communicated with the water inlet flow channel, and the second side is provided with a concentrated water outlet communicated with the water inlet flow channel; at least one separator is arranged in the water inlet flow channel, and the separator is configured to be capable of separating the water inlet flow channel so as to improve the flow speed of fluid in the water inlet flow channel. According to the technical scheme disclosed by the utility model, the membrane surface concentration polarization layer phenomenon can be weakened, the anti-pollution capability of the membrane structure is improved, and the service life of the membrane structure is prolonged.

The application provides a building membrane structure performance testing device and a safety evaluation method in a simulated corrosion environment, and relates to the technical field of building membrane structure performance testing devices. The building membrane structure performance testing device comprises a membrane material tensioning device, an artificial simulated corrosion device and a data acquisition system. The membrane material tensioning device is used for fixing a building membrane material to be tested and applying a tensioning force to the building membrane material during testing. The artificial simulated corrosion device comprises a control module, a booster water pump and an ultraviolet lamp. The control module controls the booster water pump and the ultraviolet lamp to simulate a corrosion aging environment of the building membrane material during testing. The data acquisition system comprises a laser displacement sensor. When the building membrane material with a mark point deforms in the simulated corrosion aging environment, the laser displacement sensor monitors the deformation of the mark point and forms testing data. The application can accurately control the tensioning force and direction of the membrane structure and carry out long-term corrosion after tensioning is completed. The application can accurately analyze and evaluate the mechanical properties of the safety performance of the membrane structure before and after corrosion.

The utility model relates to the field of detection reagent consumables, and provides a tear-resistant multilayer composite fiber membrane structure, which comprises a wear-resistant structure, the bottom surface of the wear-resistant structure is adhered with a tear-resistant structure, the tear-resistant structure comprises first fibers, second fibers and a second adhesive layer, the top ends of the first fibers are adhered to the bottom surface of the wear-resistant structure, and the top ends of the second fibers are adhered to the bottom surface of the wear-resistant structure. Second fiber yarns are arranged on one sides of the first fiber yarns, and second bonding layers are bonded to the bottom ends of the second fiber yarns. Through the arrangement of the tear-resistant structure, the first fiber yarns and the second fiber yarns have the characteristics of high strength, high modulus, high temperature resistance and the like, and have good impact resistance and corrosion resistance, and the tensile strength and the tear strength are enhanced through the cross distribution of the first fiber yarns and the second fiber yarns; the device has a good anti-tearing function, and the tearing strength of the multi-layer composite fiber membrane is improved.

This invention relates to the field of wastewater treatment technology, specifically providing a multi-stage wastewater treatment device for remote suburbs. The device includes a pool body comprising a bottom, a top, walls, and an isolation wall. The bottom and top are made of flexible, impermeable material. The top has through-holes for connecting pipes. The walls are constructed of an air-supported membrane structure. The bottom and top are fixedly and sealed to the walls, which are located between the top and bottom. The isolation wall divides the interior of the pool body into multiple independent compartments. These compartments are arranged sequentially along the wastewater flow direction, and adjacent compartments are hydraulically connected through through-holes in the isolation wall. The air-supported membrane structure is hollow and filled with a pressurized medium. This invention effectively reduces the construction period and transportation costs of wastewater treatment devices.

The present application belongs to the technical field of bridge wind tunnel test device, and provides a kind of wind tunnel test device simulating nonlinear vibration of bridge structure, including rigid model, rigid rod, rigid circular arc suspension arm, linear tensile spring, nonlinear elastic element and light high-strength fine rope.Nonlinear elastic element can adopt cable structure, membrane structure, nonlinear tensile spring, mechanical super material or superstructure.By designing the nonlinear stiffness characteristics of nonlinear elastic element, the layout mode and the combination mode of linear tensile spring, various target nonlinear stiffness modes can be realized to carry out large amplitude vertical torsional coupled flutter test of bridge structure under nonlinear stiffness.In the process of large amplitude vibration of model, the center hanging point of nonlinear elastic element and linear tensile spring can always maintain vertical displacement and deformation, and the device can ensure stable stiffness, damping, mass and mass moment characteristics.

The present invention provides a curved elastic deployable rod-type film structure, which includes: a mounting body, a mounting plate provided on the end surface of the mounting body, a rotating shaft provided at the center of the mounting plate; a guide mechanism, which forms a preset track with the rotating shaft; a curved rod, one end of which is connected to the rotating shaft, and the other end of which extends radially outward from the center of the mounting plate or winds and contracts inward from the edge of the mounting plate along the preset track during the rotation of the rotating shaft; a film, which is connected to the curved rod, and when the curved rod extends radially outward from the center of the mounting plate, the film gradually unfolds to a curved state; when the curved rod winds and contracts inward from the edge of the mounting plate, the film gradually contracts to a folded state; and a limiting mechanism, which includes a fixing column, an extrusion member, and an elastic member. Compared with conventional planar deployable film structures at the current stage, the present invention not only improves its flexibility of use, but also improves the directional reflectivity, communication quality, signal transmission efficiency, rigidity, and stability of the film after deployment.

The invention discloses a maintenance device and method for building structure concrete construction. The maintenance device comprises a supporting plate, the inner wall of the supporting plate is rotationally connected with a film covering structure, the inner wall of the supporting plate is fixedly connected with a humidifying structure, and the outer wall of the supporting plate is fixedly connected with a pressing structure; the invention relates to the technical field of concrete construction and maintenance, according to the film covering structure, the humidifying structure and the pressing structure, felt cloth laying, humidifying, surface compacting and fixed-length cutting can be completed through cooperation of a first supporting roller, a second supporting roller, a first guide roller and a second guide roller on a supporting plate, and through rotation control of a valve shaft and a water outlet hole, the film covering structure can be used for covering the surface of the felt cloth. The water outlet amount is adjusted according to needs, controllable water supply is achieved, a pressing roller is tightly attached to the surface of concrete through cooperation of a supporting rod, a rotating rod and a torsion spring, a cutter is pressed through cooperation of a sliding groove, a sliding rod, a sliding block and an extension spring, the sliding block drives the cutter to move downwards, the cutter and a cutting block fixed to the bottom of a supporting plate extrude, and felt cloth is cut off.

This utility model relates to the field of air-supported membrane structure technology, and more particularly to an air-supported membrane structure door structure and its installation structure, including a truss structure door frame and an airbag door body. The truss structure door frame has an internal cavity for accommodating the airbag door body, which is placed within the cavity. The outer wall of the airbag door body abuts against the inner wall of the truss structure door frame, and the truss structure door frame limits the movement of each side of the airbag door body. Multiple wheels are fixedly installed at the bottom of the truss structure door frame, and several bolt locks are provided on the lower part of one side of the truss structure door frame. A hook structure is provided on the upper part of the side of the truss structure door frame with bolt locks. The beneficial effects of this utility model are: the use of a truss structure door frame to support the airbag door body greatly reduces the weight of the door structure; it ensures the stability of the airbag door body installation and the strength of the entire door structure; it facilitates the installation and disassembly of the door structure at the door installation opening, and facilitates the opening and closing of the door structure.

The goal is to reduce the heating load in winter and the cooling load in summer. [Solution] The membrane structure building comprises a double membrane that constitutes the exterior of the building and has an inner membrane and an outer membrane having a radiative cooling function, and an air blower / discharge device that switches between an insulating mode in which air is blown into the double membrane to form an air layer between the inner membrane and the outer membrane, and a solar radiation shielding mode in which air is discharged from the double membrane to bring the inner membrane and the outer membrane into contact.

The application discloses a membrane-shaped structure with good anti-seepage effect and a construction method, and belongs to the technical field of anti-seepage of building engineering. The membrane-shaped structure with good anti-seepage effect is characterized in that a plurality of strip-shaped protrusions are arranged on the anti-seepage material, the plurality of strip-shaped protrusions protrude from the plane of the membrane-shaped material, and a plurality of drainage recess structures capable of limiting water or / and air and allowing water or / and air to flow are formed, so that the drainage rate and the air permeability effect can be effectively improved, rapid drainage or / and air ventilation is facilitated, the drainage or / and air ventilation effect is good, the structure is simple, practical, easy to construct, high in construction efficiency, and capable of accelerating water flow and enhancing the drainage effect, thereby effectively reducing water residue on the construction surface and avoiding environmental dampness; meanwhile, the structural strength of the membrane-shaped material can be effectively enhanced, the compression resistance and the top breaking resistance of the membrane-shaped material are improved, the rupture of the membrane-shaped material is effectively avoided, and the tensile resistance effect is good.

The invention relates to an assembly method of a functional element, glass and a vehicle, the assembly method of the functional element comprises the following steps: step S1, stacking a first membrane and a second membrane to form a double-layer membrane structure; s2, the double-layer film structure is placed on an operation table top of film cutting equipment, and the second film is located between the first film and the operation table top; s3, the first membrane is cut through the membrane cutting equipment to form a hollow part; and S4, arranging a functional element in the hollow part. The technical problems that in the color matching glass production process, cutting of a PVB film layer has over-cutting and potential safety hazards, and the cutting precision and efficiency are low are solved.

The utility model discloses a cable-membrane structure center connection node, and relates to the technical field of cable-membrane buildings. The cable membrane connecting node solves the problems that an existing cable membrane connecting node is poor in universality, low in error-tolerant rate, tedious in operation process, low in working efficiency and large in labor cost. An upper seat plate and a lower seat plate are both of a regular polygon plate-shaped structure, a plurality of cable connecting assemblies are arranged between the upper seat plate and the lower seat plate in the circumferential direction, a guide rail sliding block mechanism is arranged between the upper seat plate and the lower seat plate, and two sets of guide rails are horizontally and oppositely installed on the lower surface of the upper seat plate and the upper surface of the lower seat plate respectively. A sliding block locking piece is installed on the upper seat plate, the guide rail located on the upper portion and the sliding block are fixed through the sliding block locking piece, a horizontally-arranged cable connecting hole is formed in the middle of the sliding block, and one end of the cable connecting assembly is rotationally installed in the cable connecting hole of the sliding block. According to the cable-membrane connecting joint, the universality, the installation error-tolerant rate and the working efficiency of the cable-membrane connecting joint are improved, the operation process is simplified, and the labor cost is reduced.

The utility model discloses a membrane structure tensioning device which comprises a tensioning steel cable, a tensioning hook and a limiting drill nail, the tensioning hook comprises a limiting hook, a bearing plate and a supporting plate which are sequentially arranged, the limiting hook is fixedly connected with the bearing plate, and the supporting plate is fixedly connected with the tensioning steel cable; a pair of guide rods are fixedly connected to the bearing plate, penetrate through the supporting plate and are in sliding fit with the supporting plate, so that the distance between the supporting plate and the bearing plate can be adjusted; an adjusting screw rod is fixedly connected to the bearing plate, penetrates through the supporting plate and is in sliding fit with the supporting plate, an adjusting nut is arranged at the end, away from the bearing plate, of the adjusting screw rod, and the adjusting nut abuts against the bearing plate. According to the utility model, the tensioning degree of the membrane structure can be quickly adjusted, the wrinkle position of the membrane structure can be quickly smoothed, the operation is convenient, and time and labor are saved.

A gas storage reservoir, an energy storage device, and a control method and a mounting method for the gas storage reservoir. An inner foundation structure surrounds the outer side of a ground film; an outer foundation structure surrounds the outer side of the inner foundation structure; the edge of an inner film is fixed to the inner foundation structure; an inner cable net is arranged on the outer surface of the inner film; an accommodating cavity is defined between the inner film and the ground film, and the inner film comprises a metal layer; an outer film structure covers the outside of the inner film structure; the outer film structure comprises an outer film and an outer cable net an interlayer cavity is defined between the outer film and the inner film; an air supply device is configured to inflate the interlayer cavity.

The utility model provides a concrete slab brick moulding bed structure, which relates to the technical field of moulding bed structures, and comprises a moulding bed plate, a connecting device is arranged on one side of the moulding bed plate, the connecting device comprises an L-shaped plate, a supporting device is arranged on one side of the L-shaped plate, a clamping groove is arranged on one side of the L-shaped plate, and the L-shaped plate is connected with the supporting device. A clamping groove is formed in the side, away from the clamping groove, of the L-shaped plate, a clamping block is fixedly connected to the side, away from the clamping groove, of the L-shaped plate, two rectangular grooves are symmetrically formed in the surface of the L-shaped plate, and the size and the shape of the surface of each tire mold plate are matched with the size and the shape of the inner wall of the corresponding rectangular groove. And meanwhile, the corner position between every two adjacent tire mold plates can be reinforced, the situation that the corner position of every two adjacent tire mold plates is fractured or deformed when subjected to concrete pressure, and consequently concrete flows out to affect concrete pouring forming is reduced, and the strength and stability of the corner position after the multiple tire mold plates are spliced are improved.

A planar truss tent with a flexible roof and its drainage system belongs to the technical field of tents. It includes a planar grid structure, a multi-top suspended membrane structure and a drainage system. The multi-top suspended membrane structure and the drainage system are both installed on the planar grid structure. The multi-top suspended membrane structure has multiple support points. The design of multiple tops in the present invention can more flexibly cover a large area, create a rich and diverse spatial form, and better adapt to complex site and functional requirements. The combination of multiple tops can form a more layered and three-dimensional shape. In the multi-top suspended membrane structure of the present invention, a plurality of suspended ceilings are used to fix the overall membrane structure to the roof hanging points. At the same time, the membrane edge is fixed to the structural member through a cable or a hard boundary and tightened upward through the suspended ceiling, thereby forming an overall stable structure. In the multi-top suspended membrane structure of the present invention, a large-area membrane surface is fixed to the planar grid structure through multiple suspension points, forming a beautiful and stable structure.

The utility model provides a waterproof coiled material structure which comprises a coiled material body (3) and is characterized in that the coiled material body (3) comprises waterproof film sleeves (31) and asphalt layers (32), the asphalt layers (32) are filled in the waterproof film sleeves (31), splicing components are arranged on the two sides of the waterproof film sleeves (31) respectively, and the adjacent waterproof film sleeves (31) are connected through the splicing components; the splicing components are arranged on the two sides of the waterproof film sleeves correspondingly, the adjacent waterproof film sleeves are connected through the splicing components, and therefore the laying requirements of different sizes can be met according to the size requirements of the actual positions, needing to be laid, of the waterproof roll, and the application range is effectively widened.

This invention discloses a large-span roof structure, including a central roof structure (1) and peripheral roof structures connected thereto; the central roof structure adopts a membrane-truss-cable composite structure, and the peripheral roof structures adopt a plate-steel frame composite structure; the membrane-truss-cable composite structure includes a membrane structure, an upper truss unit, and a lower truss cable unit, and the plate-steel frame composite structure includes a roof panel structure and a steel frame structure; the outer periphery of the upper truss unit is fixedly connected to the roof panel structure, and the lower truss cable unit is connected to the steel frame structure; the upper truss unit includes a circumferential enclosing truss body, multiple sets of diagonally interlaced arch trusses, and upper diagonal reinforcing rods; the lower truss cable unit includes a lower circumferential enclosing truss body, multiple sets of diagonally interlaced trusses, lower diagonal reinforcing rods, and multiple cables. This invention can ensure that the large-span structure roof has a larger space, more diverse forms, less material usage, and stronger structural stability.