54 results about "Unit structure" patented technology

The invention relates to a radial frequency-doubled sound filtering metamaterial and a topological optimization design method thereof.The radial frequency-doubled sound filtering metamaterial comprises scatterers which are arranged on a base body and distributed in a concentric circle mode, and the topological optimization design method comprises the following steps that a two-dimensional axial symmetry model is established, the two-dimensional axisymmetric model corresponds to the cross section of the radial frequency-doubled sound filtering metamaterial in the radius direction and comprises periodically arranged unit structures, and each unit structure comprises a main board and a square design domain; a Floquet periodic boundary condition is applied to parallel boundaries of a unit structure in the radius direction, other boundaries are set as free boundaries, a genetic algorithm is adopted to carry out iterative optimization on the material distribution topology of a square design domain, the optimal material distribution topology of the square design domain is obtained, and then the final optimized shape of the radial double-frequency sound filtering metamaterial is obtained. Compared with the prior art, the invention has the advantages of capability of realizing omni-directional sound wave frequency doubling filtering, high design reliability and the like.

The invention discloses a unit type curved surface curtain wall installation device and method, and relates to the technical field of curtain wall construction, and the unit type curved surface curtain wall installation device comprises a plurality of detection units which are respectively installed on each control point on a unit structure body and are used for detecting actual measurement coordinates of the corresponding control points; the fine adjustment mechanism is connected to the lower end of the hoisting belt of the crane and is used for finely adjusting the position of the unit structure body; the control module is electrically connected to the detection unit and the fine adjustment mechanism; wherein the control module is configured to obtain actual measurement coordinates of each control point fed back by the detection unit; comparing the actually measured coordinates of each control point with pre-stored theoretical coordinates in a BIM model to obtain a deviation value of each control point; performing overall pose analysis based on the deviation value to obtain a pose deviation of the unit structure body in the space; generating a movement control quantity corresponding to each control point based on the pose deviation; and sending a movement control instruction to the fine adjustment mechanism according to the movement control quantity. The installation method has the effect of improving the installation efficiency.

The utility model discloses a construction waste disposal feeding unit structure, which relates to the technical field of feeding unit structures, and comprises a bottom plate, a supporting shell is fixedly connected to the left side of the top of the bottom plate, a collecting shell is fixedly connected to one side, close to the supporting shell, of the top of the bottom plate, and the construction waste disposal feeding unit structure further comprises a mounting structure, the left side of the top of the rotating disc is fixedly connected with a tow rod, the top of the inner wall of the bottom shell is fixedly connected with a limiting plate, the center of the top of the limiting plate is sleeved with and rotationally connected with a rotating rod, a first motor is started to drive a rotating shaft to be connected with a screen shell and a building for left-right reciprocating motion screening, and dust and building waste are separated; in this way, dust is effectively removed, the working efficiency of the crushing device is improved, and the situation that the working efficiency of the crushing device is reduced, the treatment time of the construction waste is prolonged and the whole crushing working efficiency is reduced due to the fact that the dust contained in the construction waste is inconvenient to gear and buffer is avoided.

The application discloses a modular building unit structure and a modular building. The modular building unit structure comprises four cuboid building frame units, a supporting column movably connected between one straight angle end of each of the building frame units, the four building frame units distributed on the same plane, and the straight angle ends of the building frame units provided with the supporting column gathered and fixedly connected with each other, and the supporting column movable to approach or move away from the straight angle end of the building frame unit. The modular building unit structure and the modular building can remove the supporting column at the intersection of the four building frame units, so that the independent spaces in the four building frame units are connected to form a large space, the reconstruction of a large-span space can be realized on site, the reconstruction mode is simple and convenient, and the reconstruction mode can be adapted to various application scenarios.

The invention provides a super high-rise steel tube concrete column construction process finite element modeling method and system, and the method comprises the steps: building a finite element model based on a steel tube, a construction node and a concrete unit structure, and setting material attributes, boundary conditions and contact attributes; applying axial force load caused by dead load to the wall and the top surface of each layer of steel pipe according to a construction step of every n layers, and so on until construction of all layers is completed, and simulating the construction process by setting a life-death unit; after construction of all layers is completed, axial force loads caused by live loads are applied at a time, and establishment of a refined finite element model is completed; and the rigidity, the bearing capacity and the anti-seismic property of the concrete-filled steel tubular column are calculated and analyzed through finite elements. According to the method, a'life-death unit 'is arranged to simulate the construction process, loading is carried out according to the n-layer one-step construction step, the contact attribute between the steel pipe and concrete is arranged in the simulation process, the bonding friction effect of an interface is considered, and refined finite element modeling of the concrete-filled steel tubular column of the super high-rise building is achieved.

The utility model relates to the field of constructional engineering, and discloses a construction protective fence for constructional engineering, which comprises a plurality of unit structures arranged side by side, the vertical telescopic sleeves are arranged on the left and right sides of the base; the vertical telescopic cylinder comprises a plurality of hollow cylinder bodies, and a connecting lantern ring is fixed to the outer wall of the top of each hollow cylinder body. Pull ropes are arranged on the left and right sides of the top of the blocking net, and the blocking net is fixedly connected with the connecting lantern rings through the pull ropes; and the top plate is arranged at the top of the vertical telescopic sleeve, and the lower surface is fixedly connected with the top of the innermost hollow cylinder. According to the device, the height of the protective fence is adjusted by mutually sleeving the hollow cylinders and sliding the hollow cylinders up and down, and then the height is locked in the first plug pin holes and the second plug pin holes through the plug pins, so that the purpose of quickly adjusting the height of the protective fence according to the actual requirements of a construction site is achieved. And meanwhile, the height of the protective fence can be reduced to the minimum during storage, so that transportation and storage are facilitated.

The present invention discloses a self-cleaning glass curtain wall with a unit structure and a cleaning method, comprising a frame, wherein slots are provided on both sides of the inner wall of the frame, and a glass curtain wall body is clamped inside the two slots, and a first mounting slot is provided on one side of the bottom of the frame, and a motor is fixedly installed on one side of the first mounting slot. The self-cleaning glass curtain wall with a unit structure is designed with a motor, a driving bevel gear, a screw, a driven bevel gear, a movable sleeve, a movable plate, a toothed plate, a rotating drum, a cleaning brush, a first transmission wheel, a second transmission wheel, a circular gear and a belt. When it is necessary to clean dust on the surface of the glass curtain wall body, the driving motor drives the cleaning brush on the rotating drum downward through the transmission mechanism, and during the vertical movement of the rotating drum, the circular gear engages the toothed plate to rotate, thereby causing the second transmission wheel to drive the first transmission wheel to rotate through the belt, thereby causing the rotating drum to rotate while moving downward.

The invention provides an assembly type external elevator shaft. Comprising an elevator shaft base, a plurality of layers of unit structures and a plurality of corridor assemblies. The elevator shaft seat is arranged on the ground on the outer side of a building, the multiple layers of unit structures are sequentially and vertically arranged, the unit structure on the lowermost layer is fixed to the elevator shaft seat, and a cavity allowing an elevator to reciprocate up and down is formed in the multiple layers of unit structures. A corridor assembly is arranged between every two adjacent upper and lower layer unit structures, each corridor assembly at least comprises two corridor supporting beams, one end of each corridor supporting beam is detachably connected with the corresponding layer unit structure, and the other end of each corridor supporting beam is fixedly connected with the side wall of the building. The fabricated external elevator shaft is of a fabricated structure, all the components are installed on site, and the construction period is greatly shortened. And through the embedded bolts and the detachable connection mode, the installation process is more convenient, and the site construction time and labor force are reduced. The influence on the building main body is small, the external elevator shaft does not occupy the internal space of the building, and the change of the building main body structure is reduced.

A sound barrier unit structure with scales is used for absorbing or reflecting noise on a road and comprises a stand column, a unit plate and a connecting structure. The stand columns are fixed to the foundation ground on the two sides of a road, and the unit plates are detachably inserted between the two adjacent stand columns by adjusting the length of the connecting structures. Size scales are arranged on the unit plates and are used for displaying depth values of the unit plates inserted into the stand columns; according to the utility model, the problem that maintenance and management personnel cannot check whether the depth of the sound barrier unit plate inserted into the vertical column side surface groove reaches the standard scale through the gap between the sound barrier unit plate and the vertical column is solved, so that the sound barrier unit plate is prevented from falling off due to insufficient depth of the sound barrier unit plate inserted into the vertical column side surface groove; and safe driving of vehicles and safety of people around the road are endangered.

The invention relates to the technical field of buildings, in particular to a saw-toothed assembly type unit structure of an oversized aluminum plate decorative wing and a construction method.The assembly type unit structure comprises the aluminum plate decorative wing, and the mounting face of the aluminum plate decorative wing is a vertical face or an inclined face; the unit plate is arranged on one side of the installation face of the aluminum plate decoration wing, one end of the installation face of the unit plate is fixedly connected with the aluminum plate decoration wing through a reinforcing fixing piece, and the other end of the installation face of the unit plate is fixedly connected with the other end of the aluminum plate decoration wing through a secondary fixing piece; the two ends of the aluminum plate decoration wing are fixed to the installation face of the unit plate through the reinforcing fixing piece and the secondary fixing piece respectively so as to be of a linear structure convenient to transport. Wherein one end, connected with the unit plate, of the reinforcing fixing piece is fixedly connected with a main body structure through a switching system during formal assembly.

The utility model discloses a kind of assembled external elevator shaft;Including elevator shaft pedestal, several layer unit structures and several corridor components;Elevator shaft pedestal is arranged on the ground outside building, several layer unit structures are vertically arranged in turn, the layer unit structure in the lowermost layer is fixed with elevator shaft pedestal, and the cavity for reciprocating of elevator is formed in several layer unit structures inside;Corridor component is equipped between adjacent upper and lower group layer unit structures, and the corridor component at least includes two corridor support beams, one end of corridor support beam is detachably connected with corresponding layer unit structure, and the other end of corridor support beam is fixedly connected with building side wall.This assembled external elevator shaft uses assembled structure, and each component is installed on site, which greatly shortens construction period.Prefabricated bolt and detachable connection mode make installation process more convenient, reduce on-site construction time and labor force.It has little influence on building main body, and external elevator shaft does not occupy building internal space, which reduces the modification of building main structure.

The invention belongs to the technical field of micro-nano photonics, and discloses a super-structure lens layout design file data compression method, system and device and a medium, and the method comprises the steps: obtaining unit structure parameters used for generating a super-structure lens layout design file; according to the design requirements of the super-structure lens, the caliber of the super-structure lens is divided into a plurality of circular ring areas with different radiuses; placing unit structures in circular ring areas with different radiuses based on the unit structure parameters; and combining the unit structures arranged under different radiuses to finish the drawing of the metamaterial lens. According to the data compression algorithm provided by the invention, the size of the layout design file can be reduced exponentially, and meanwhile, the compressed layout file can be directly used for processing the mask.

The invention relates to a building assembly type piping shaft unit structure and a construction method thereof.The building assembly type piping shaft unit structure comprises a unit box, a connecting part and a plurality of pipelines, the top and the bottom of the unit box are provided with a plurality of pipeline openings allowing the ends of the pipelines to be contained, the connecting part is arranged at the top of the unit box, and a plurality of sleeves are embedded in the connecting part; the sleeves correspond to the pipelines in position and are connected with the pipelines on the two unit boxes. The construction method of the building assembly type piping shaft unit structure comprises the following steps that the piping shaft unit structure is prefabricated, a welding steel plate is pre-buried in a floor cavity, the piping shaft unit structure is hoisted to the floor cavity, and then a gap between a piping shaft and a floor is filled. According to the scheme, each unit box is unloaded through the L-shaped steel on the structural beam, the unit boxes are directly formed through concrete pouring, the surfaces of the unit boxes can reach the level of bare concrete, painting, puttying or painting on the inner walls are not needed, all construction is completed in a factory, and the construction time is greatly shortened.

The present invention relates to a meta sheet capable of independently designing a Poisson's ratio and a coefficient of thermal expansion, and a design method for the meta sheet. In the meta sheet capable of independently designing a Poisson's ratio and a coefficient of thermal expansion, according to the present invention, polygonal unit structures having beams are continuously arranged and polygonal edges are hinge-connected such that the unit structures are rotated by an external force, thereby allowing expansion or contraction at a predetermined Poisson's ratio, and the beams are formed as double-layer beams in which two materials having different coefficients of thermal expansion are bonded in the longitudinal direction such that bending deformation occurs by heat, thereby allowing expansion or contraction even by external heat.

The utility model discloses a five-axis machining center which comprises a five-axis linkage machining machine, an integrally-formed supporting base is installed at the bottom of the five-axis linkage machining machine, the supporting base comprises a central control frame structure, a groove is formed in the top face of the frame structure, a flow guide opening is formed in the bottom face of the groove, and the bottom face of the groove inclines towards the flow guide opening. A first positioning mounting table and second positioning mounting tables located on the two sides of the first positioning mounting table are arranged on the bottom face of the groove, and a third positioning mounting table arranged in the length direction of the first positioning mounting table is arranged in the middle of the first positioning mounting table; the five-axis linkage processing machine is mounted on the first positioning mounting table, the second positioning mounting table and the third positioning mounting table; a water storage tank connected with the flow guide opening is mounted in the frame structure; the supporting base and the internal water storage tank serve as unit structures and can be independently machined and matched according to different installation requirements, and the flexibility requirements of installation height, position movement and the like are met.

A heat exchanger includes a core capable of exchanging heat between a plurality of fluids. The core includes a core outer peripheral wall forming an outer surface and one unit structure or a plurality of unit structures arranged inside the outer peripheral wall.The unit structure includes a plurality of flow paths formed to extend in a predetermined direction as a whole, and a partition wall separating the plurality of flow paths from each other. The plurality of flow paths include a first flow path(s) in which a first fluid flows, and a second flow path(s) in which a second fluid flows to exchange heat to / from the first fluid through the partition wall. The partition wall includes a division wall part(s). The division wall part(s) has / have a twisted shape that rotates about a rotation center axis extending in the predetermined direction in accordance with a position in the predetermined direction, and is / are formed to extend in a spiral shape from the rotation center axis in a cross section perpendicular to the predetermined direction.

The reverse construction method grouting formwork is arranged on the edge of the bottom of the vertical shaft and is close to the bottom shaft wall, and the reverse construction method grouting formwork is characterized in that the reverse construction method grouting formwork comprises a plurality of unit structures, and the unit structures are arranged into a whole in a surrounding mode; the unit structure comprises a steel formwork which is vertically arranged, and a grouting opening is formed in the top of the steel formwork; the blocking plate is arranged on the steel formwork in an up-down sliding mode, and when the blocking plate slides to the top, the grouting opening is blocked; the bottom of the hopper is connected to the top of the blocking plate, a feeding port is formed in the top, and a discharging port is formed in the side facing the grouting port; when the blocking plate slides to the bottom, the bottom of the discharging opening is flush with the bottom of the grouting opening; and the fixing assembly is used for fixing the position of the grouting opening blocked by the blocking plate. According to the method, the grouting openings are formed in the steel formwork, so that the requirement that in the prior art, a former ring of formed vertical shaft wall needs to be manually excavated and damaged is avoided, the integrity of the former ring of formed vertical shaft wall is ensured, and the situation that the overall strength is affected due to damage of a concrete structure is avoided.

A shock absorber includes a shock absorbing portion having a three-dimensional shape formed by a wall in which an outer shape is defined by a pair of parallel curved surfaces. The shock absorbing portion includes at least one three-dimensional structure body obtained by changing a shape of a unit structure body thickened based on a unit structure of a Schwartz P structure. The shape of the three-dimensional structure body in an unloaded state is a shape obtained by changing the shape of the unit structure so as to follow the shape change of the unit structure body, which is the regular hexahedron shaped space occupied by the unit structure body, into the trapezoidal space.

The invention discloses a line-driven bendable bridge and an operation method thereof. The line-driven bendable bridge comprises a plurality of bendable bridge unit structures, bridge piers and control lines. The bendable bridge unit structure comprises a small frame, a large frame, a wide bridge floor and a narrow bridge floor. All the bendable bridge unit structures are connected in series to form a zigzag arrangement mechanism; flattening or bending of the bendable bridge can be achieved by tightening and loosening different control wires. In the flattened state, vehicles pass through the wide bridge floor, and pedestrians pass through the narrow bridge floor. The amphibious device can be used by selecting different piers, has the advantages of being rapid in unfolding, high in bearing capacity and light in self weight, can meet the rescue requirement when major disasters suddenly occur, ensures that rescue actions are carried out in time, and protects life and property safety of people.

To propose a reusable modular building with a rational structure, taking into consideration ease of construction, strength, livability, and the like.SOLUTION: Provided is a modular building in which functional members are attached to a frame that joins columns 11 with floor beams 12 and ceiling beams 13 to form living units 1, and the living units 1 are stacked adjacently to each other, and the living units 1 are connected to each other and to other units with different functions to construct a building. Adjacent living units 1 are aligned on each floor, with the columns 11 arranged in pairs, the living units 1 on the lower and upper floors are aligned vertically, and a space is secured between the ceiling beams 13 on the lower floor and the floor beams 12 on the upper floor, and the columns 11, which are steel pipes, of the adjacent living units 1 on the lower and upper floors are joined by overlapping and fastening the overlapping plate portions in each direction of respective joint members 8.SELECTED DRAWING: Figure 1

The invention discloses an overweight eccentric component orifice lifting point conversion supporting device which comprises two unit structures, each unit structure comprises a steel plate bracket, supporting profile steel is welded to the steel plate bracket, a butt joint steel plate is welded to the supporting profile steel, and the two unit structures are in butt joint through connecting bolts on the butt joint steel plate. A U-shaped lifting lug is welded to the supporting profile steel, and a fine adjustment lever is arranged on the outer side of the U-shaped lifting lug. The multi-group steel plate bracket is suitable for supporting various types of reinforcement cage components, is also suitable for eccentric components, is not limited by long and short edges by optimizing a penetrating steel pipe type bracket into a non-penetrating type bracket, and meanwhile, one or two supporting points are dispersed into a plurality of supporting points, so that the stirrup is stressed more safely, and the safety in the supporting process is ensured; the supporting profile steel is located on the outer side of the reinforcement cage component, the section size is not limited by the distance between the main reinforcements and the stirrups, the supporting profile steel is supported from the outer side of the reinforcement cage component and not affected by eccentricity of the reinforcement cage, the technical difficulty of construction is lowered, and manpower input can be saved.

The invention discloses a giant stepped internal thermal insulation modular plenum chamber fabricated structure system, and relates to the technical field of plenum chamber construction. The system comprises a supporting system, a modular plenum chamber assembling system, a sealing system and a heat insulation system which are arranged in a space below a step, and the supporting system is mainly composed of a channel steel frame, a channel steel main beam and a hanging rod; the modular plenum chamber assembly system mainly comprises modular plenum chamber unit structures mounted between the adjacent channel steel girders and between the channel steel girders and the channel steel frames. The system is scientific in design, reasonable in structure, small in size, light in weight, capable of achieving modular assembly type construction and good in using effect, the technical problems that a huge static pressure box of a concrete structure is large in size, large in structural load and incapable of achieving assembly type construction are solved, and construction and implementation of a modular assembly type box body of the huge stepped internal heat preservation static pressure box are facilitated.

The invention relates to the technical field of building construction, and discloses a one-time forming method for a small-spacing sandwich structure, which is suitable for a double-wall interlayer with the spacing less than or equal to 300mm. According to the method, through a process of'filling module integrated design + one-time formwork erection + one-time pouring + convenient formwork removal ', a supporting-filling integrated filling module made of an extruded sheet or a plastic material is adopted; positioning blocks are integrally formed on the two sides of the modules, functional gaps of 20-30 cm are reserved between the modules, and a special positioning and fixing system composed of split bolts, PVC sleeves and elastic washers is matched, so that efficient and high-precision forming of the sandwich structure is achieved; the problems that in the prior art, an inner supporting unit is complex in structure, high in machining cost, prone to failure in turnover, free of functional gaps, difficult to dismantle, tedious in working procedure and the like are solved, and the inner supporting unit has the advantages of being simple in structure, controllable in cost, stable in turnover, high in functional adaptability, convenient to dismantle, free of damage to a wall and high in construction efficiency.

The present invention is a method for installing the structure of a long-distance steel frame traffic corridor, and belongs to the technical field of building corridor construction. The method of the present invention is to set up a temporary bracket, decompose the installation unit into a part that can form a basically stable unit structure and a part to be installed later, and after the part that forms a basically stable unit structure is installed, the temporary bracket is unloaded, and the formed self-structure is used as a force support, and the remaining steel beams, roof tie rods and roof supports are installed later, and then the corridor roof purlins are installed, thereby achieving the purpose of reducing the cross-section of temporary bracket materials and the number of temporary brackets, reducing the tonnage of cranes, the cost of hoisting machinery shifts, and reducing the cost of structural installation and construction. The method of the present invention is scientifically and rationally designed, with simple and easy procedures. It does not require a large-tonnage crane and can be installed by an ordinary truck crane, reducing the use fee of hoisting machinery and the fee of temporary support measures, improving the safety of installation and construction, reducing construction costs, and improving construction efficiency.

The application discloses a variable-radiation roof sliding formwork device and a construction method thereof, which comprises two arc-shaped guide rails arranged oppositely, a formwork box, a plurality of unit structures, and a plurality of strip-shaped holes formed in the bottom of the formwork box. The two opposite sides of the formwork box are respectively provided with sliding members which are slidably arranged on the arc-shaped guide rails. The unit structures comprise a unit plate, a first driving rod arranged vertically and with adjustable length, and a second driving rod arranged obliquely and with adjustable length. The unit plate is arranged below the formwork box and along the width direction of the arc-shaped guide rails. The unit plates of the plurality of unit structures are continuously arranged along the length direction of the arc-shaped guide rails. The opposite sides of the unit plate are respectively hingedly connected with the first driving rod. The middle part of the first driving rod is movably arranged in the strip-shaped hole. The upper end of the first driving rod is hingedly connected with the top of the formwork box. The two ends of the second driving rod are respectively hingedly connected with the first driving rod on one side of the unit plate and the top of the formwork box. The application solves the problems of vibration difficulty and concrete aggregate sedimentation and stratification in the construction of large-volume slope roof by using double-side formwork construction.

The utility model provides a glass rib unit type curtain wall system, and relates to the technical field of building curtain walls. The unit body structure is fixedly connected with the stand column and comprises a unit body lower cross beam and a unit body upper cross beam, and the unit body lower cross beam and the unit body upper cross beam are connected in an inserted mode; the unit body upper cross beam is fixedly connected with the first side of a first hanging lug, and the second side of the first hanging lug is fixedly connected with the main body structure; a glass rib is fixed on the first hanging lug; and the unit body lower cross beam and the unit body upper cross beam are fixedly connected with glass plates. According to the scheme, the splicing and hanging problems of combination of the glass rib and a traditional unit curtain wall are solved, reasonable stress of the whole unit is guaranteed through a reasonable connection mode, the force transmission path is clear, and the construction efficiency is high.

The application provides a concentric ring superlens based on assembly of two-dimensional unit structures and a preparation method thereof. The application obtains a simulation region of two-dimensional unit structures, obtains processable structures in the simulation region, constructs a unit structure library containing complete optical information according to the processable structures, obtains a two-dimensional structure section according to the unit structure library, rotates the two-dimensional structure section around an optical axis, and obtains the overall three-dimensional structure of the concentric ring superlens. The preparation method of the concentric ring superlens of the application makes the calculation power requirement for designing the concentric ring superlens no longer increase with the increase of the aperture, and the design time of the superlens with an aperture of the order of thousands of wavelengths is reduced from the order of weeks to the order of minutes, which has obvious speed advantages in overall structure assembly, layout generation, sample processing and the like. The focusing efficiency of the concentric ring superlens prepared by the application is obviously higher than that of a Fresnel lens of the same order.

The utility model discloses a railway ballast bed drainage auxiliary system based on U-shaped unit structures, which comprises a drainage tank embedded in the top surface of a roadbed, two gravel ballast beds are arranged on two sides of the drainage tank, a plurality of U-shaped unit structures which are linearly and tightly distributed are detachably mounted at the top of the drainage tank, and the U-shaped unit structures are embedded in the drainage tank. The U-shaped unit structure is reversely buckled at the top of the drainage channel to shield the top of the drainage channel; each U-shaped unit structure comprises a U-shaped blocking cover, first strip-shaped side openings which are evenly distributed are formed in the two sides of each U-shaped blocking cover, and leakage holes which are evenly distributed are formed in the top of each U-shaped blocking cover. The inner support is fixed to the inner side of the U-shaped blocking cover. The U-shaped unit structure is arranged, the U-shaped blocking cover can be used for preventing gravels from sliding into the drainage groove, the drainage groove is effectively prevented from being blocked, the reliability of drainage can be guaranteed due to the fact that the first strip-shaped side opening and the leakage hole are formed, and later maintenance can be conveniently carried out due to the fact that the U-shaped blocking cover is detachable.

The invention discloses a mute high-vibration-reduction ballast bed unit structure and a mute high-vibration-reduction ballast bed. The unit structure comprises two longitudinal pillows (1), two constraint damping vibration reduction structures (2), a plurality of special-shaped I-shaped steel transverse connecting structures (3), a limiting groove (4) and a limiting boss (5). The plurality of special-shaped I-shaped steel transverse connecting structures (3) are connected between the two longitudinal pillows (1), so that a main body structure of the mute high-vibration-reduction road bed unit structure is formed; the two constraint damping vibration attenuation structures (2) respectively cover the outer side wall, the bottom and about 1 / 3 of the inner side wall from bottom to top of one longitudinal beam (1); one end of each longitudinal beam (1) is provided with the corresponding limiting groove (4), and the other end of each longitudinal beam (1) is provided with the corresponding limiting boss (5) matched with the corresponding limiting groove (4); a first macromolecule elastic layer (42) is attached to a groove opening (41) of the limiting groove (4).

To provide a method of constructing an aerial walkway that facilitates the construction of the aerial walkway, while ensuring the passage of pedestrians and vehicles directly under the aerial walkway.SOLUTION: A method of constructing an aerial walkway comprises the following steps: Step S1, in which a preceding building 10 is constructed in advance, a structure 31 of the aerial walkway 30 is assembled on the ground 2, and a suspended scaffold 41 and an external scaffold 42 are attached to the structure 31 to form a walkway unit 43; Step S2, in which a temporary bearing structure 50 is installed near the construction site of a later-constructed building 20; Step S3, in which the walkway unit 43 is lifted by a lifting machine 51, one end of the structure 31 of the walkway unit 43 is connected to the preceding building 10, and the other end of the structure 31 is supported by the temporary bearing structure 50; Step S4, in which a part of the later-constructed building 20 is constructed, and the later-constructed building 20 is connected to the other end of the structure 31 of the walkway unit 43; and Step S5, in which the aerial walkway 30 is completed, and the suspended scaffold 41, the external scaffold 42, and the temporary bearing structure 50 are removed.SELECTED DRAWING: Figure 6