73 results about "Composite beams" patented technology

This invention provides a dry lens AOI inspection method and system, relating to the field of contact lens manufacturing technology. The invention first performs a shell removal process on the cured shell mold to separate the lens from the shell mold. Then, the lens is attached to the shell mold for AOI inspection. Multiple illumination sources are combined to form a composite beam that illuminates the lens and acquires images. Image enhancement and analysis, combined with adjustments to light source parameters, are used to identify defects. Results that do not meet thresholds are subjected to depth analysis. Finally, defect statistics are completed and an inspection report is generated. This invention simplifies the inspection process, improves inspection efficiency and accuracy, achieves precise determination of lens defects, and is adaptable to the inspection needs of different types of contact lenses.

This invention discloses a steel-framed thin-layer UHPC-NC composite beam, comprising a steel frame, a face plate, a web plate, and a bottom plate, the width of the face plate being smaller than the width of the bottom plate; a UHPC layer cast on the outside of the steel frame; a top plate fixed to the steel frame; and shear keys, Ω-shaped, with their bottom ends fixed to the face plate. The construction method includes the following steps: S1, fabricating the steel frame; S2, welding and fixing the shear keys to the top of the face plate; S3, distributing prestressed steel strands below the bottom plate; S4, casting the UHPC layer and curing to the required strength; S5, casting the top plate above the face plate. Through the composite structural design of the steel frame, thin-layer UHPC, and ordinary concrete top plate, the advantages of each material are fully utilized, improving the beam's crack resistance, durability, and buckling resistance. This effectively controls project costs, balancing structural safety, economy, and ease of construction, providing a high-performance, low-cost new composite beam solution for medium-span projects.

This invention relates to the field of seismic resistance technology for spatial frame structures, and discloses a method for determining the energy dissipation mechanism of a steel-concrete composite column-composite beam spatial frame. The energy dissipation mechanism includes steel beams, steel-concrete composite columns, and reinforced concrete slabs. The steel beams are welded and fixed to the steel-concrete composite columns via reinforcing rings, and the steel beams are fixedly connected to the reinforced concrete slabs via studs. Tie bars are provided at the ends of the steel-concrete composite columns. The ratio of the flexural bearing capacity of the steel beams to that of the steel-concrete composite columns is within the range of 0.42 to 1.05. By introducing the ductile damage parameter of the steel, combined with the inter-story drift angle, cumulative energy dissipation, beam-column energy dissipation ratio curve, and finite element calculation results of stiffness damage of the spatial frame, the energy dissipation characteristics and energy dissipation mechanism type of the structure are determined. This invention aims to solve the technical problems in the prior art where the steel-concrete composite columns do not form sufficient compression-bending hinges for energy dissipation during seismic resistance, easily leading to collapse, and the technical problems of using beam energy dissipation mechanisms in seismic design while rarely considering column energy dissipation.

This application provides a track beam device for a multi-level parking garage and the multi-level parking garage itself. The track beam device includes an upper track beam, which in turn includes an H-shaped steel main beam; a pair of H-shaped steel secondary beams located on both sides of the H-shaped steel main beam, with the upper and lower surfaces of the pair of H-shaped steel secondary beams forming a first track surface and a second track surface, respectively; and a plurality of reinforcing units evenly spaced between the H-shaped steel main beam and the pair of H-shaped steel secondary beams along the extension direction of the H-shaped steel main beam, and connected to both the H-shaped steel main beam and the pair of H-shaped steel secondary beams. This application, through the parallel arrangement of the H-shaped steel main beam and the two H-shaped steel secondary beams, enables the upper track beam to form a composite beam structure, thereby significantly improving the lateral stiffness and bending resistance of the upper track beam and evenly distributing the dynamic load of the vehicle platform.

This invention discloses a load transmission testing device for composite beams, comprising a base, an L-shaped back plate, a hydraulic cylinder, a mounting plate, a pressure sensor, a loading component, a clamping and fixing mechanism, and a displacement mechanism. The clamping and fixing mechanism uses a dual-axis motor-driven screw to automatically clamp the composite beam; the displacement mechanism uses a servo motor-driven slider to achieve horizontal movement of the composite beam, allowing for rapid switching of the loading position without hoisting; the hydraulic cylinder pushes the loading component downwards, the pressure sensor monitors the load value in real time, and multiple laser rangefinders synchronously measure the vertical deformation of the beam at various positions in a non-contact manner, avoiding damage to traditional contact displacement gauges when the beam fails; the clamp adopts a plug-in structure, combined with an electromagnetic adsorption and pin-locking mechanism, facilitating quick assembly and disassembly, and is adaptable to composite beams with different cross-sectional shapes. This invention has advantages such as automatic clamping, hoist-free relocation, non-contact measurement, and quick clamp changing, enabling efficient, safe, and accurate completion of multi-condition load transmission testing.

This invention discloses a novel modular prefabricated building system with prestressed connections, belonging to the field of building construction technology. It includes box-type standard module units and prestressed connection units. The box-type standard module unit consists of L-shaped composite columns, straight composite columns, H-shaped steel honeycomb composite beams, prefabricated lightweight partition walls, upper corrugated prefabricated floor slabs, lower corrugated prefabricated floor slabs, and door and window components. Current mainstream inter-module connection technologies have certain limitations in terms of assembly efficiency and maintainability. This novel modular building system requires no bolts during the entire assembly process. Vertical connections are achieved using prestressed steel strands and vertical connecting sleeves, while horizontal connections are made between adjacent box-type module units via horizontal connecting plates. This significantly reduces the requirements for on-site operating space and construction accuracy. The prestressed connection method offers advantages such as quick assembly and replaceable easily damaged parts.

This application relates to the field of bridge engineering construction technology, and proposes a semi-prefabricated steel and UHPC shell prestressed continuous composite beam and its construction method. The semi-prefabricated steel and UHPC shell prestressed continuous composite beam includes: a continuous beam, including a positive bending moment zone and a negative bending moment zone; steel beams arranged along the entire length of the continuous beam, or only along the positive bending moment zone; a UHPC shell, located in the lower part of the negative bending moment zone; precast slabs, including precast slabs for the positive bending moment zone and precast slabs for the negative bending moment zone, applied to the upper part of the continuous beam; shear connectors, located on the upper flange of the steel beam; concrete, filling the interior of the UHPC shell; embedded parts, for connecting with the precast slabs in the negative bending moment zone; grouting connection zones, formed on the precast slabs and corresponding to the positions of the shear connectors and embedded parts; and prestressing tendons, arranged along the beam length of the continuous beam or only in the negative bending moment zone. This enables rapid, safe, and green construction of steel and concrete continuous composite beam bridges.

This invention discloses a laser irradiation therapy device based on metal film directional scattering beam expansion, comprising a chassis, a power supply module, an intelligent control module, a mid-infrared laser emission module, and a human-computer interaction component mounted on the chassis. It also includes a laser transmission module, a metal film directional scattering beam expansion and homogenization module, a visible laser emission module, a temperature detection module, and an adjustable support. During operation, the mid-infrared laser is transmitted to the beam-combining module via a light guide arm or flexible mid-infrared hollow fiber, while the visible laser is transmitted to the beam-combining lens via a visible light incident channel. The two lasers form a coaxial composite beam at the beam-combining lens, which together irradiates the metal film component. After directional scattering and beam expansion, the beam is output from the light outlet to the working area, forming an expanded and homogenized light spot. This therapy device, with the metal film component as the core optical shaping component, has advantages such as clear structure, adjustable light output direction, adjustable light spot area, visualized working area, and high safety.

The application provides a steel-concrete composite beam and a construction method thereof without a guide beam, the composite beam comprising multiple sections of steel box beams spliced with each other, longitudinal beams arranged between two adjacent sections of the steel box beams, the longitudinal beams being arranged on the lower surface of the top plate of the steel box beams, the length of the longitudinal beams being matched with the length of the steel box beams, and the longitudinal beams extending along the length direction of the steel box beams; multiple bridge decks spliced with each other are arranged on the top plate of each section of the steel box beams, and multiple shear studs extending into the bridge decks are arranged on the upper surface of the top plate; wet joints are arranged between two adjacent bridge decks to be integrated by pouring micro-expansion concrete. The longitudinal beams are arranged at the front end of the steel box beams and between the adjacent steel box beams, the longitudinal beams can bear the negative bending moment of the jacking and can assist in jacking the pier, thereby solving the problem of poor stress state of the existing composite beam, the problem of difficulty in controlling the deflection of the cantilever end when the span is increased during the jacking construction, and providing a rapid bridge construction method, facilitating the construction of the bridge deck, and adapting to the jacking construction of crossing rivers, rivers and other terrains.

The utility model provides a prestressed composite beam, the web of main beam body (1) is provided with the flange (4) that stretches out to the outside, the beam body longitudinal reinforcement (11) of main beam body (1) inside includes ordinary reinforcement (13) and prestressed reinforcement (14), the ordinary reinforcement (13) is symmetrically arranged in the web of main beam body (1), the prestressed reinforcement (14) is symmetrically arranged in the beam bottom, the beam body stirrup (12) stretches out the top bearing surface (2) of main beam body (1) and becomes the cast-in-place part (5). Compared with prior art, the beneficial effects are: improving the shearing capacity, meeting the installation demand of large-span composite slab and being free from field formwork and support operation. Not only free from formwork construction, but also free from support, reducing the engineering quantity, shortening the construction period and saving the cost. The prestressed reinforcement symmetrically arranged in the beam bottom can balance the bending moment produced by external load, and through the cooperative work of prestressed reinforcement and ordinary reinforcement realizes efficient stress, ensures the economy and safety.

The present application relates to a kind of methods for prestressing of composite beam, comprising the following steps: by the multiple jacking devices along the longitudinal arrangement of steel beam jacking, the linear shape of whole steel beam after jacking is generally circular arc curve;Concrete is covered on the steel beam after jacking, and composite beam is formed;Cancel the jacking device of steel beam jacking, and make composite beam drop to design state, to apply continuous pre-compressive stress to composite beam.Because by the multiple jacking devices along the longitudinal arrangement of steel beam jacking, the linear shape of whole steel beam after jacking is generally circular arc curve, in the case where the jacking linear shape of steel beam is circular arc curve, the bending moment of each point on steel beam is also equal, after concrete is covered on steel beam and drops to design state, it can apply continuous uniform pre-compressive stress to composite beam, and the continuous uniform pre-compressive stress applied to composite beam can offset the continuous change influence of temperature change and shrinkage creep to composite beam, to limit crack of composite beam.

This utility model relates to the field of building structure engineering technology, specifically to a prefabricated bamboo-based composite frame beam-column joint based on co-extrusion technology. The joint connects bamboo-based composite columns and beams, comprising a hollow cylindrical steel section and two horizontal steel plates. The hollow cylindrical steel section is inserted into the bamboo-based composite column. The horizontal steel plates include a connecting section and an extension section. The connecting section is welded to the outside of the hollow cylindrical steel section, and the extension section, serving as a beam connection, is connected to the bamboo-based composite beam using high-strength bolts. The extension section covers the outside of the bamboo-based composite beam. The two horizontal steel plates are spaced apart, dividing the hollow cylindrical steel section into a middle column segment and two end column segments. The middle column segment of the hollow cylindrical steel section is bonded to the bamboo-based composite column using adhesive, and the end column segments are connected to the bamboo-based composite column using high-strength bolts. This utility model saves building space while reducing steel consumption and material costs.

This application relates to an electromagnetically driven device and method for measuring the elastic modulus of flexible thin films. The device includes an electromagnetic drive module, a composite beam sample module, a displacement measurement module, and an elastic modulus inversion module. The composite beam sample consists of a base beam, microchannels filled with conductive liquid metal, and a flexible thin film to be measured attached to its upper surface. During measurement, the composite beam is placed in a magnetic field and energized through the microchannels to generate distributed Lorentz forces that deform it. The deformation data is acquired through the displacement measurement module, and combined with the dimensionless scaling law relationship obtained through finite element calibration, the elastic modulus of the thin film is calculated by the inversion module. This invention achieves non-contact, uniform loading, improves measurement accuracy by utilizing multi-condition data inversion, and has universal applicability.

The application provides a box-groove type composite beam manufacturing device and a manufacturing method thereof, and the method comprises the following steps: manufacturing a longitudinal box-groove type composite beam; and designing a composite beam assembling and welding device to ensure the quality and precision of the box-groove type composite beam, wherein the device is composed of an H-shaped steel platform, a supporting pier, an abutting weld adjusting column, an anti-toppling column, a top-tightening screw rod and the like, a top plate position reference line is drawn on the H-shaped steel platform, and the supporting pier is arranged on the H-shaped steel platform and is welded and connected with the H-shaped steel platform. The box-groove type composite beam manufacturing method provided by the application solves the problems of great assembling difficulty and difficult precision control of the super-high and narrow box composite beam by once assembling and welding the super-high and narrow box composite beam into a shape through a "side-lying" method, so that the manufacturing precision and quality of the super-high and narrow box composite beam are improved.

The utility model provides a kind of frame of battery pack and battery pack, it is related to battery technical field, the frame of battery pack includes: border frame beam and crossbeam, the border frame beam includes border frame main body, at least one section bar cavity is formed in the side wall of the border frame main body, composite structural member is equipped in the section bar cavity;The crossbeam is installed in the border frame main body, the crossbeam includes main body composite beam, composite cavity is formed in the main body composite beam, section bar structural member is equipped in the composite cavity.The frame of battery pack of the utility model embodiment, border frame beam is configured as section bar and is equipped with composite structural member inside, the advantages of section bar material and composite material are combined, the anti-side crash capability of border frame beam is improved, the outside of crossbeam is main body composite beam, and section bar structural member is equipped inside, the rigidity of crossbeam is improved, to improve the support effect of crossbeam to battery module.

This invention application belongs to the field of seismic resistance technology for building structures, specifically disclosing a seismic-resistant PEC composite beam-column joint reinforcement module and energy dissipation system. It includes a joint reinforcement module detachably connected to a PEC column, and an auxiliary energy dissipation system detachably connected between the lower part of the joint reinforcement module and the PEC column. The auxiliary energy dissipation system is a vertical plate made of shear-type energy-dissipating steel plate. This solution is mainly applied in the connection process between PEC columns and steel beams, solving problems such as insufficient seismic resistance of the joint area, poor energy dissipation capacity, and difficulty in post-earthquake repair in existing technologies.

A steel shell-UHPC composite beam flexural capacity determination method considering the role of the partition, relates to the field of building design. The steel shell-UHPC composite beam flexural capacity determination method considering the role of the partition is to construct the steel shell-UHPC composite beam structure with partition after four-point loading bending test, determine the failure mechanism, failure characteristics and crack propagation law of the steel shell-UHPC composite beam structure with partition under the action of bending load, establish the cross-section stress diagram of the steel shell-UHPC composite beam structure with partition and calculate the ultimate bending moment. The steel shell-UHPC composite beam structure with partition is established to analyze its failure mechanism, failure characteristics and crack propagation law under the action of bending load, and based on the cross-section stress diagram of the steel shell-UHPC composite beam structure with partition, the ultimate bending moment calculation formula is established to calculate the ultimate bending moment, which can greatly simplify the calculation process while ensuring the calculation accuracy.

The utility model relates to steel wood beam column technical field discloses a kind of light steel wood composite beam column connecting joint, it includes steel wood composite column, steel wood composite beam and connecting piece, connecting piece is fixed between steel wood composite column and steel wood composite beam;Steel wood composite column includes H type steel column and two wood columns, two wood columns are fixed in the two sides of the first web of H type steel column, the inside of wood column is equipped with two clamping slots, and clamping slot is matched with the first wing plate clamping;Steel wood composite beam includes H type steel beam and two boards, two boards are respectively fixed in the outside of the second wing plate of H type steel beam;The end of H type steel column is formed male head relative to wood column protruding, and the other end of H type steel column is formed female head relative to wood column concave;The male head of adjacent steel wood composite column is connected by insertion, and male head has node part, connecting piece is set in the node part of H type steel column and is fixedly connected with H type steel beam, and the end of wood column is matched with the top pressure of board.

This invention discloses a semi-flexible sealed composite material beam-membrane-island structure for micro / nano devices and its fabrication method. The invention employs both rigid and flexible materials to construct the beam-membrane-island structure of the micro / nano device. The beam and island structures are made of rigid materials that can be fabricated in micro / nano dimensions, while flexible materials fill the periphery of the beam and island structures. The flexible filling layer acts as a "displacement coordination layer," ensuring a clear mechanical response while maintaining the high modulus of the silicon beam. Simultaneously, the local deformation of the flexible layer absorbs lateral coupling stress, allowing strain fields in different directions to be separated and amplified in the beam / island region. The flexible material forms a stress transition zone between the beam and island, preventing strong stress concentration in the pure silicon beam-island structure under concentrated loads. This invention still uses materials compatible with micro / nano fabrication processes as the main structural material, enabling integration with standard photolithography, reactive ion etching, deep silicon reactive ion etching, anodic bonding processes, through-silicon vias (TSVs), and glass vias, among other micro / nano processes.

The application discloses a kind of semi-flexible sealing composite beam membrane island structure formula micro-nano device and its processing method.The application uses hard material and flexible material to constitute the beam membrane island structure of micro-nano device, wherein the hard material that can be micro-nano processed is used in beam structure and island structure, and flexible material is filled in the periphery of beam structure and island structure.Flexible filling layer plays the role of "displacement coordination layer", and by the local deformation of flexible layer, transverse coupling stress is absorbed, so that strain field in different directions is separated and enlarged in beam / island area.Flexible material forms stress transition zone between beam and island, to avoid strong stress concentration of pure silicon beam island structure under concentrated load.The application still uses material compatible with micro-nano processing technology as main structure material, and can be integrated with standard photolithography, reactive ion etching, deep silicon reactive ion etching and anodic bonding process, through silicon via, through glass via and other micro-nano processes.

The utility model relates to a kind of superposed beams, specifically is exempt from support prefabricated superposed beam inverted T section load-bearing member, including beam body subassembly, beam body subassembly inside is fixed with side brace subassembly, beam body subassembly top is provided with height adjustment subassembly, beam body subassembly top is provided with connecting subassembly, side brace subassembly includes pre-buried frame, pre-buried frame is fixed in beam body subassembly inside, pre-buried frame one side is fixed with fixed tendon two, pre-buried frame one side is fixed with pre-buried silk pipe, pre-buried frame inside is sleeved with sleeve block, sleeve block one side is fixed with fixed plate, fixed plate one side is provided with mounting hole one, fixed plate one side is provided with mounting hole two, beam body subassembly includes support beam, support beam top is provided with fixed hole, support beam inside is fixed with main tendon, support beam inside is fixed with bundling tendon.The utility model can reach the mode of transition connection with mounting plate as base plate by the setting of mounting hole one and mounting hole two on fixed plate, so as to achieve the fixation of support beam 101 and wall column together.

The utility model provides a kind of UHPC-steel box composite beam intelligent hoisting equipment, it is related to bridge engineering construction technical field, including: equipment main frame;Equipment main frame component, the equipment main frame is installed in the upside of equipment main frame component;Steel box girder hanger component, installation is in the upper portion of equipment main frame;UHPC beam hanger component, installation is in the bottom of equipment main frame.The utility model is deficient in view of prior art, develops a kind of UHPC-steel box composite beam intelligent hoisting equipment, the utility model is in view of the problems existing in traditional UHPC-steel box composite beam construction, to improve construction efficiency, reduce construction cost, shorten construction period, reduce manpower and material resources input, improve construction quality.

This invention discloses a novel vibration reduction technology system for modular concrete building structures, relating to vibration reduction technology in building engineering. It includes prefabricated composite beams, composite shear walls, and composite floor slabs, which are interconnected to form prefabricated concrete modules. Bending deformation energy dissipation components are embedded in the composite beams, and shear deformation energy dissipation components are located in the central area of ​​the connecting beams of the prefabricated concrete modules. Hysteretic energy dissipation components are also provided in the horizontal connection areas between adjacent composite shear walls and at inter-story connections. This invention also discloses a construction method. This invention effectively improves the energy dissipation capacity of the connection nodes between modules under seismic loading, fundamentally enhancing connection reliability and structural integrity.

The application discloses a steel box combined beam bottom platform, which comprises a framework, positioning columns, fender bars and steel hanging belts are welded on the upper surface of the framework respectively, two fender bars are arranged, middle plates and edge plates are arranged between the two fender bars, the middle plates can be spliced with the edge plates, the middle plates and the edge plates are inserted with the positioning columns, the upper ends of the steel hanging belts can be connected with the steel box combined bridge, guardrail assemblies are arranged on the fender bars, the guardrail assemblies comprise first node seats fixed on the upper surfaces of the fender bars, the steel box combined beam bottom platform is formed by welding the framework into a grid shape by using channel steel, the middle plates and the edge plates are densely laid, the framework and the beam bottom are welded by the steel hanging belts, and the bottom platform under the bridge is formed, so that workers can walk and work on the bottom platform under the condition of ensuring the clearance for the vehicles passing under the bridge, the structure is safe and reliable, the installation and removal are convenient, the whole platform is prepared in advance, and the steel box combined beam bottom platform has the advantages of light weight, convenient hoisting, rapid welding and the like.

This invention provides a double-sided H-beam composite girder cable-stayed bridge and its permanent and temporary combined restraint system, relating to the field of bridge engineering technology, and solving the problem of high difficulty in the design and construction of existing double-sided H-beam composite girder cable-stayed bridges. The permanent and temporary combined restraint system includes a steel main girder providing rotational restraint about the longitudinal axis and rotational restraint about the vertical axis, a transverse wind-resistant bearing providing transverse sliding restraint, a steel tie rod providing longitudinal sliding restraint, a first vertical support providing vertical sliding restraint, and temporary concrete pads, temporary steel pads, anchoring steel benches, and vertical prestressed steel strands providing rotational restraint about the transverse axis. After the installation of the bridge tower bearing pads, longitudinal damper base pads, stops, and longitudinal damper bases is completed, the steel tie rods are installed through the stops, longitudinal damper base pads, and damper bases. The temporary concrete pads, temporary steel pads, anchoring steel benches, and vertical prestressed steel strands are respectively set at the bearing pads near the first vertical support of the bridge tower.