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584 results about "Superstructure" patented technology

A superstructure is an upward extension of an existing structure above a baseline. This term is applied to various kinds of physical structures such as buildings, bridges, or ships having the degree of freedom zero (in the terms of theory of machines).

Construction method and construction system for bridge joist pier replacement

The invention discloses a construction method and a construction system for bridge joist pier replacement, and relates to the technical field of bridge construction.The construction method comprises the following steps that gate-type pier studs are arranged on the two sides of a to-be-replaced pier, two steel cover beams are arranged on the corresponding gate-type pier studs in the longitudinal direction of a bridge, and a sliding structure is arranged on the two steel cover beams; temporary supporting pieces are arranged on the two steel cover beams, and the bridge superstructure is supported through the temporary supporting pieces; a pier cap of the to-be-replaced pier is cut off, the pier cap is moved out through a sliding structure, and the steel coupling beam is moved to the position where the original pier cap is located through the sliding structure; and supporting the upper structure of the bridge by using the steel coupling beam, and removing the temporary supporting piece to complete pier replacement. According to the construction method, in the joist pier replacement process, the connection stability is high, the construction method is simple, and the construction efficiency and safety are ensured.
Owner:CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD

Underwater sound absorption superstructure reverse design method under multi-material system

The invention discloses a reverse design method of an underwater sound absorption superstructure under a multi-material system in the technical field of vibration and noise control. The reverse design method of the underwater sound absorption superstructure under the multi-material system comprises the following steps: predicting the macroscopic sound absorption performance of the superstructure based on an equivalent medium theory; based on an energy homogenization theory of an SIMP interpolation function, establishing a superstructure topological optimization reverse design method under the multi-material system; and a proper material system is selected, and the multi-material superstructure is precisely designed by taking equivalent elastic parameters of the superstructure as targets. Compared with an existing underwater sound absorption superstructure design method, the method has the advantages that large-scale sound-solid coupling finite element calculation can be avoided, and efficient design of the superstructure and good low-frequency broadband sound absorption performance are achieved; in addition, the design method provided by the invention has universality under different multi-material systems.
Owner:NAT UNIV OF DEFENSE TECH

Systems and methods for dynamic bridge weight in motion

System and method for monitoring vehicular traffic on a bridge, including receiving digital data representing the response of the bridge to a traffic event, where the digital data has been collected during the traffic event, from displacement sensors and accelerometers mounted on the superstructure of the bridge, wherein the digital data from the displacement sensors embody bending responses of the bridge, the digital data from the accelerometers embody acceleration responses of the bridge, and the digital data from the sensor are synchronised in the same time space, providing a parametric model which uses modal parameters to simulate generalized boundary conditions and two-dimensional behaviour of the bridge; using the parametric model to process the digital data to solve for deformation of the bridge and characteristics of the vehicle traffic, and generating an output that describes the deformation of the bridge and characteristics of the vehicle traffic.
Owner:UNIVERSITY OF NEW BRUNSWICK

Real-time abnormal diagnosis method and system for displacement monitoring data of old slab bridge girder

The invention relates to the technical field of bridge monitoring, in particular to an abnormal real-time diagnosis method and system for displacement monitoring data of a main beam of an old slab bridge, and the method comprises the steps: collecting and processing the vertical displacement of n main beam components in the transverse bridge direction of an upper structure of the same section of the old bridge at any t moment; calculating the force transfer index of the real-time displacement between the ith and jth main beam components of the upper structure of the same section of the old bridge at the t moment; constructing a judgment matrix of real-time displacement force transfer indexes of n main beam components of the old bridge superstructure; and an abnormity judgment function of the displacement monitoring data of the ith main beam component of the old bridge superstructure at the t moment is constructed, when the abnormity judgment function F (i) is 0, it is indicated that the displacement monitoring data of the ith main beam component at the t moment is not abnormal, and otherwise, it is indicated that the displacement monitoring data of the ith main beam component at the t moment is abnormal. The data accuracy of the old bridge displacement real-time monitoring system is enhanced, the situation of bridge structure safety monitoring misjudgment is diagnosed and eliminated in time, and the reliability of bridge safety monitoring and safety evaluation is improved.
Owner:GUANGXI TRANSPORTATION SCI & TECH GRP CO LTD

Abnormity real-time diagnosis method and system for old slab bridge strain real-time monitoring data based on force transmission index

The invention relates to the technical field of bridge data monitoring, in particular to an abnormal real-time diagnosis method and system for old slab bridge strain real-time monitoring data based on a force transmission index, and the method comprises the steps: collecting strain monitoring data of n main beam components of an old bridge superstructure at any t moment, processing the strain monitoring data, and converting the strain monitoring data into displacement monitoring data; calculating a force transfer index between the i and j main beam components of the old bridge superstructure at the t moment, and constructing a force transfer index threshold matrix of the old bridge superstructure with n main beam components; and an anomaly judgment function of the strain monitoring data of the ith main beam component of the old bridge superstructure at the t moment is constructed, when the anomaly judgment function is 0, it is indicated that the displacement monitoring data of the ith main beam component at the t moment is not abnormal, and otherwise, it is indicated that the displacement monitoring data of the ith main beam component at the t moment is abnormal. The data accuracy of an old bridge strain real-time monitoring system is enhanced, the situation of bridge structure safety monitoring misjudgment is eliminated in time, and the reliability of bridge safety monitoring and safety evaluation is improved.
Owner:GUANGXI TRANSPORTATION SCI & TECH GRP CO LTD

Bridge substructure modeling scheme generation method, device, equipment and medium

The invention discloses a bridge substructure modeling scheme generation method and device, equipment and a medium, and relates to the technical field of bridge engineering, and the method comprises the steps: obtaining bridge superstructure design input parameters, constructing substructure design task information, and generating design parameters through big language model reasoning; and a modeling script is automatically generated, and structural response calculation is carried out. Different modeling strategies are judged and executed according to the calculation result, finally, a target modeling scheme meeting the requirement is intelligently generated, design parameter generation and automatic modeling of the bridge substructure in a non-standard bridge type scene are achieved, and the design efficiency and accuracy are improved.
Owner:HUNAN PROVINCIAL COMM PLANNING SURVEY & DESIGN INST CO LTD +1

Ship superstructure combined type bulkhead structure and manufacturing method

The invention relates to the technical field of ship construction, in particular to a ship superstructure combined type bulkhead structure and a manufacturing method. By combining the straight bulkhead and the groove-shaped bulkhead, on one hand, the groove-shaped joints on the groove-shaped bulkhead can reduce welding heat input deformation, reduce the original construction object quantity and the structural light weight, and ensure the rigidity of the bulkhead structure in the height direction; and on the other hand, the outfitting open hole is formed in the flat and straight bulkhead, so that the opening precision of the outfitting open hole is conveniently controlled, and effective connection of the penetration piece and the bulkhead structure is realized. And meanwhile, the stiffener is arranged, so that the bulkhead structure is reinforced in the through direction of the outfitting opening. The center line and the folding line of the groove-shaped node are surveyed on the wall plate of the combined type bulkhead structure in advance, so that the subsequent precision inspection of the combined type bulkhead structure is facilitated, the operation is simpler, and the inspection result is clear at a glance.
Owner:JIANGNAN SHIPYARD (GRP) CO LTD

Method and system for checking pre-flood hidden dangers and evaluating water damage risk of medium and small span bridges

The invention relates to the technical field of bridge engineering detection and evaluation, in particular to a method and a system for checking pre-flood hidden dangers and evaluating flood damage risks of medium and small span bridges. According to the flood flow and the bridge inundation event information, obtaining a risk scoring result and a risk grade condition of bridge inundation; bridge structure instability information is collected to establish a bridge structure parameter analysis model, and then a risk scoring result and a risk grade condition of bridge superstructure deviation and bridge superstructure overturning are obtained; acquiring a bridge abutment collapse information set to obtain a risk scoring result and a risk grade condition of bridge abutment collapse and bridgehead panning events; and analyzing risk scoring results and risk grade conditions of bridge submerging, bridge superstructure deviation, bridge superstructure overturning, bridge abutment collapse and bridgehead washing events, and realizing hidden danger investigation and flood risk evaluation before medium-small-diameter cross flood through a systematic evaluation method.
Owner:RES INST OF HIGHWAY MINIST OF TRANSPORT

Mobile crane and placement device for same

The invention relates to a mobile crane, that comprises a mobile undercarriage and a superstructure rotatably supported on the undercarriage and having a boom and a ballasting device. The ballasting device picks up or places down one or more counterweight elements by means of a hoisting device. In accordance with the invention, a placement device is provided that is connected to the undercarriage and comprises at least one movable placement part that is movable from a travel position into a placement position and vice versa. In this respect, the travel position is characterized in that the length of the undercarriage is reduced, and the crane is travelable on the construction site, whereas the placement position is characterized in that counterweight elements can be placed on the placement part by means of the ballasting device and the length of the undercarriage is increased in comparison with the travel position.
Owner:LIEBHERR WERK EHINGEN

Floating suspension type jacket high-pile wharf structure suitable for ultra-large water depth and construction method of floating suspension type jacket high-pile wharf structure

The invention discloses a floating suspension type jacket high-pile wharf structure suitable for ultra-large water depth and a construction method, and belongs to the technical field of high-pile wharfs. The structure comprises a jacket, a pile foundation and an upper structure; the lower part of the upper structure is connected with a pile foundation; the jacket is installed on the lower end face of the upper structure and connected to the pile foundation. The upper structure comprises a sleeve box type pile cap, a cross beam, a longitudinal beam and a laminated panel; the sleeve box type pile cap is installed on the upper end face of the pile foundation. The longitudinal beam system is installed on the upper end face of the sleeve box type pile cap. The cross beams are mounted between the adjacent longitudinal beam systems; and the laminated panel is flatly laid on the surface layer of the upper structure. The structure adapts to a large-water-depth and large-flow-velocity environment by exerting the structural advantages of the structure, and the structure is small in underwater construction work amount, high in assembly degree, small in environmental influence, short in construction period and low in engineering investment.
Owner:CCCC THIRD HARBOR CONSULTANTS

Risk assessment method and system for bridge superstructure safety and storage medium

The invention relates to a bridge superstructure safety risk assessment method and system and a storage medium. The method comprises the following steps: acquiring disease score deduction information of a technical condition of a bridge superstructure; obtaining bridge superstructure technical condition scoring data of the sample bridge, bridge superstructure score-deducted indexes and disease classification categories of the score-deducted indexes, and analyzing common indexes in the score-deducted indexes according to the score-deducted indexes; calculating a deduction value of the disease classification category of the common index at each scale based on an LSHADE algorithm, and calculating a safety risk score of the bridge superstructure of the sample bridge; dividing safety risk levels; constructing a bridge safety risk evaluation model by adopting a CatBoost ensemble learning method, and training the bridge safety risk evaluation model by utilizing a frequency reduction coefficient and the like of a sample bridge; and evaluating the safety risk level of the bridge superstructure by using the trained bridge safety risk evaluation model. The method is high in evaluation efficiency, low in cost and high in accuracy.
Owner:JILIN UNIVERSITY +1

Coded electromagnetic shielding superstructure optimization design system and method and superstructure unit array

The invention discloses an electromagnetic shielding technical scheme of a coding superstructure and an optimization design system. The electromagnetic shielding technical scheme comprises a reflectivity setting module which sets a reflectivity threshold according to target shielding performance; the superstructure construction module generates an initial candidate array based on the symmetric unit design; and the parameter optimization module dynamically adjusts the sub-block thickness and the unit ratio k value through a particle swarm algorithm, and realizes 1-18GHz broadband reflectivity optimization in combination with a piecewise evaluation function. According to the invention, through deep fusion of coding superstructure design and an intelligent optimization system, collaborative optimization of electromagnetic loss and phase regulation is successfully realized, and significant technical advantages are formed in key indexes such as broadband absorption, angle adaptability, system efficiency and the like.
Owner:DONGFENG MOTOR GRP

Crane with a dermal ballast

The invention relates to a crane comprising an undercarriage, a superstructure rotatably mounted on the undercarriage, a boom connected to the superstructure in a luffing manner, a derrick boom articulated to the superstructure and braced over which the boom is guyed, a guide connected to the superstructure, and a derrick ballast, in particular designed as a suspended ballast. The derrick ballast comprises at least two stackable ballast elements and a crossbeam, which is connected to the derrick boom via a ballast bracing and to the superstructure via the guide. According to the invention, the crossbeam can be connected to a stack of ballast elements via at least one retaining element.The holding element comprises first connecting means for detachably connecting the holding element to second connecting means of the ballast elements of the stack and is designed such that by moving the holding element and / or the crossbeam relative to the detached stack, the holding element can be connected to a partial stack of ballast elements of the stack. The invention further relates to a derrick ballast for such a crane.
Owner:LIEBHERR WERK NENZING

Chiral origami superstructure connecting pipe for vibration control

The invention discloses a chiral paper folding superstructure connecting pipe for vibration control, and relates to the technical field of structural mechanics and vibration reduction performance of cylindrical shell type connecting pipes. The invention aims to solve the problem that the existing chiral superstructure cannot meet the vibration reduction requirements under different frequencies. The structure comprises a plurality of superstructure unit cells, the superstructure unit cells are sequentially arranged from top to bottom in the axial direction, every two adjacent superstructure unit cells are connected through a set of unit cell connecting rods, the superstructure unit cells comprise a plurality of unit cells arranged in the circumferential direction, the upper ends of the unit cells are twisted anticlockwise, and the lower ends of the unit cells are twisted anticlockwise. And the upper end inner blade angle of each unit cell is connected with the lower end inner blade angle of the adjacent unit cell through a unit cell connecting rod, and the upper end outer blade angle of each unit cell is connected with the lower end outer blade angle of the adjacent unit cell through a unit cell connecting rod. The method is used for superstructure vibration reduction design.
Owner:HARBIN ENG UNIV +1

Construction method of high-pile wharf superstructure

The invention relates to the technical field of high-pile wharf construction, in particular to a construction method of a high-pile wharf superstructure, which comprises the following steps of: mounting a concrete shell prefabricated part on a pile foundation and pouring concrete in a pouring space on a cast-in-place structure of a high-pile wharf by taking the concrete shell prefabricated part as a template; the concrete shell prefabricated part and cast-in-place concrete form a whole, formwork mounting and dismounting are avoided, the construction efficiency and construction quality of the high-pile wharf are remarkably improved, and the safety risk is reduced; the concrete shell prefabricated member has the characteristics of standardization, industrialization and structural unitization; for a large prefabricated structure, a pouring bottom die of the upper structure of the high-pile wharf can be formed by assembling a plurality of concrete shell prefabricated parts on a pile foundation through block design, so that the requirement of a project for construction equipment is lowered, the site construction difficulty is lowered, the construction period of the project is shortened, and the construction cost is saved.
Owner:CCCC FOURTH HARBOR ENG CO LTD +1

Quasi-zero stiffness annular superstructure device and sea water pump composite vibration isolation system

The invention relates to the technical field of rotary mechanical vibration control, in particular to a quasi-zero stiffness annular superstructure device and a sea water pump composite vibration isolation system.The quasi-zero stiffness annular superstructure device comprises an inner ring and an outer ring, and the inner ring and the outer ring are connected through a plurality of quasi-zero stiffness one-dimensional structures; the quasi-zero stiffness one-dimensional structure is formed by sequentially arraying a plurality of groups of quasi-zero stiffness cell structures from top to bottom, a gap is formed between every two adjacent groups of quasi-zero stiffness cell structures, the left side and the right side of each gap are respectively provided with a group of cantilever beams, and the tail ends of the cantilever beams are respectively and fixedly provided with mass blocks with different masses so as to generate a local resonance band gap; piezoelectric patches are pasted on the inclined side wall of the quasi-zero-stiffness one-dimensional structure, a shunt circuit is connected, and a band gap is adjusted through the circuit. Compared with the prior art, multiple band gaps can be generated at low frequency on the basis that the bearing capacity is guaranteed, and low-frequency broadband vibration control over the rotating machine is achieved.
Owner:UNIV OF SCI & TECH BEIJING

Composite bearing structure for grouting around prefabricated pipe pile

The utility model relates to a composite bearing structure for grouting around a prefabricated pipe pile, which is suitable for the situation that the prefabricated pipe pile is adopted as a lower structure of an assembly type structure, but the requirement for bearing capacity cannot be met. The grouting steel floral tubes are distributed around the prefabricated pipe pile according to a certain angle, a circle of grouting steel floral tubes are arranged around the outer circle of the prefabricated pipe pile, the center of the prefabricated pipe pile serves as the circle center of the multiple grouting steel floral tubes, grout is injected into the grouting steel floral tubes and between the grouting steel floral tubes and the prefabricated pipe pile, and the stress of soil around the pile is enhanced through high-pressure grouting of the grout. The friction resistance around the pile is improved, the grouting body, the prefabricated pipe pile and the grouting steel floral pipe are compounded into a bearing structure, the bearing capacity requirement of an upper structure is met, reinforcing and remedying of insufficient bearing capacity of the prefabricated pipe pile are achieved, and good economic and technical benefits are achieved.
Owner:SHANDONG TRAFFIC PLANNING DESIGN INST

Slidable support structure and design method thereof

ActiveCN119859959AGeometric CADBridge structural detailsCompressive stiffnessMagneto
The invention discloses a slidable support structure and a design method thereof. The slidable support structure comprises an upper support plate, a lower support plate, a magneto-rheological elastic layer, a rubber layer, a sliding friction pair, an electromagnetic mechanism and a fence plate. The same-polarity magnetic field is applied to the electromagnetic mechanism to generate electromagnetic repulsive force, pressure acting on the sliding friction pair is partially counteracted, friction resistance borne by deformation of the main beam or the building superstructure in the horizontal direction is reduced, stress in the horizontal direction is released, and the stability of the sliding friction pair is improved. Then the same-polarity magnetic field is stopped from being applied, and unnecessary horizontal sliding of the main beam or the upper structure of the building is avoided; a magnetic field is applied to the magneto-rheological elastic layer, so that the compression rigidity of the magneto-rheological elastic layer is improved, and compensation of vertical differential deformation of the pier column or the building foundation is achieved; the design method comprises a horizontal deformation control design method and a vertical deformation compensation design method, and provides a basis for design of an electromagnetic mechanism, a sliding friction pair and a magnetorheological elastic layer.
Owner:GUANGDONG YEJIAN CONSTR DRAWING REVIEW CENT CO LTD

Interlayer superstructure electromagnetic-mechanical collaborative design method based on machine learning and heuristic optimization algorithm

The invention discloses an interlayer superstructure electromagnetic-mechanical collaborative design method based on machine learning and a heuristic optimization algorithm, relates to the technical field of material design, and is used for solving the technical problems that the mechanical property of an interlayer superstructure obtained through existing design is poor, and the requirements for strength, stability and durability in practical application are difficult to meet. The collaborative design method comprises the following steps: setting an objective function of an interlayer superstructure, and determining the configuration of the interlayer superstructure to be designed according to the objective function; establishing a proxy model according to a machine learning algorithm, and integrating the proxy model into a heuristic optimization algorithm; generating geometric characteristic variables of the interlayer superstructure in batches; obtaining the mechanical property and the electromagnetic property of the interlayer superstructure; feeding back the mechanical property and the electromagnetic property to a heuristic optimization algorithm to obtain a numerical value of an objective function; and according to the numerical value of the target function, carrying out iterative updating on the geometric feature variables until an optimal solution is obtained, and completing the design.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Overline curve steel box girder mounting method

The invention relates to the technical field of bridge erection, and provides an overline curve steel box girder installation method which is used for erecting a prefabricated and formed curve steel box girder on a limit and comprises the steps that the middle and one end of the curve steel box girder are jacked through a first self-propelled module transport vehicle set and a second self-propelled module transport vehicle set correspondingly; moving the curved steel box girder to one side of the limit; the first self-propelled module transport vehicle set serves as a rotation center, and the first self-propelled module transport vehicle set and the second self-propelled module transport vehicle set drive the curve steel box girder to rotate until the other end of the curve steel box girder crosses the limit; and a third self-propelled module transport vehicle group is arranged on the other side of the limit to support the other end part of the curve steel box girder. According to the invention, the problems that the swivel construction difficulty is high, the swivel speed is relatively slow and the bridge superstructure cannot be quickly replaced by using the existing abutment during the installation of the curved steel box girder at present can be solved, and meanwhile, the cross-line installation of the curved steel box girder can be realized.
Owner:MCC CAPITAL ENGINEERING & RESEARCH INC LTD

Load distribution method and system for multi-pier coordination of scouring damage beam bridge and storage medium

The invention discloses a load distribution method and system for multi-pier coordination of a scouring damaged beam bridge and a storage medium. The method comprises the steps that horizontal and vertical loads acting on a bridge superstructure are obtained; calculating a load distribution result of a vertical load acting on the upper structure of the bridge on the pier according to the counter-force influence line; calculating the horizontal load which acts on the upper structure of the bridge and is distributed to the pier by adopting an iterative method, namely calculating the pier top displacement according to the latest calculated horizontal load of the pier, calculating the equivalent stiffness according to the latest calculated pier top displacement, recalculating the horizontal load distributed to the pier according to the latest calculated equivalent stiffness, and calculating the horizontal load of the upper structure of the bridge according to the calculated equivalent stiffness. The pier top displacement is the pier top displacement of the pier-pile foundation under the conditions of scouring damage, flood load and vehicle load. According to the method, the influence of scouring damage, flood and vehicle load on load distribution is considered, and the accuracy of full-bridge bearing characteristic analysis is improved.
Owner:JILIN UNIVERSITY

Mixed anti-beam-falling device and using method thereof

The invention discloses a mixed anti-beam-falling device and a using method thereof. The mixed anti-beam-falling device comprises a first connecting piece, a second connecting piece, a limiting component and an energy consumption component. The first connecting piece is fixedly arranged on one side of the bridge pier; the second connecting piece is fixedly arranged at the bottom end of the bridge superstructure; the limiting component and the energy consumption component are connected with the first connecting piece and the second connecting piece through a first plug pin and a second plug pin respectively. The limiting component and the energy consumption component are arranged at proper positions of a bridge through the first connecting piece and the second connecting piece, and meanwhile, when a small-grade earthquake and a medium-grade earthquake happen, the first connecting piece and the second connecting piece move relatively, so that internal components of the energy consumption component rotate relatively, and earthquake vibration energy is dissipated; when a large-level earthquake occurs, the energy dissipation component moves to the limit position in the limiting component, the limiting component provides the limit bearing capacity, and the beam falling prevention function is further achieved.
Owner:CCCC HIGHWAY BRIDGES NATIONAL ENGINEERING RESEARCH CENTRE CO LTD

Construction device and method for installing bridge superstructure through modular barge combined automatic jacking system

The invention belongs to the technical field of bridge superstructure installation and construction, and particularly relates to a construction device and method for installing a bridge superstructure through a modular barge combined automatic jacking system. Firstly, the operation platform is formed by splicing the modular barges, then the automatic jacking system and the steel platform are installed on the operation platform, the steel platform is used for loading and supporting a to-be-installed beam section on a beam section splicing and transferring wharf, the modular barges are driven by tugs to combine the automatic jacking system and the to-be-installed beam section to move to a designed erection position, and the beam section is assembled and transported. And the to-be-installed beam section is erected on the beam bottom support through the positioning piles and the anchor mooring system, and installation of the bridge superstructure is completed. The method is simple in installation and construction, and can effectively improve the installation and construction effect of the bridge superstructure. In the installation and construction process of the bridge superstructure, the modular barges are connected into a whole through the multiple sets of cross beams, the influences of water flow and waves can be effectively reduced, and the stability of the modular barges is improved. The device is simple in structure, reasonable in design, convenient to use and operate and good in using effect.
Owner:CCCC SECOND HIGHWAY ENG CO LTD

Hexagonal element sequential wave-absorbing metamaterial and preparation method and application thereof

The invention belongs to the technical field of electromagnetic functional materials, and particularly relates to a hexagonal element sequential wave-absorbing metamaterial and a preparation method and application thereof. Superstructure design is carried out on the surface of the wave-absorbing coating with intrinsic electromagnetic loss, a superstructure wave-absorbing coating for carrying out structural loss on electromagnetic waves is obtained, the superstructure wave-absorbing coating is attached to the metal matrix layer, and the hexagonal element sequential wave-absorbing metamaterial is obtained. The hexagonal primitive sequential wave-absorbing metamaterial breaks through the Rogov limit, solves the problem that a traditional homogeneous wave-absorbing material is limited in the aspects of increasing the bandwidth and reducing the thickness, breaks through the limitation that the thickness and the bandwidth cannot be met at the same time, achieves efficient wave-absorbing and stealth compatibility under the deep sub-wavelength size, and improves the wave-absorbing efficiency. And the thickness of the super-structure wave-absorbing coating is reduced to 2mm, so that practical engineering application is facilitated, and the super-structure wave-absorbing coating can be applied to the fields of communication and national defense.
Owner:DALIAN JIAOTONG UNIVERSITY

A kind of spring-like superstructure with repeatable high-efficiency buffering energy absorption

The application belongs to the technical field of aerospace, weapon equipment buffering and energy absorption protection, and particularly relates to a spring-like superstructure capable of repeated and efficient buffering and energy absorption, which is formed by spirally winding hollow tubes or filling tubes with circular, square, hexagonal, concave negative Poisson's ratio, self-locking or other special cross-sectional shapes; by adjusting the distribution forms of geometric parameters such as the spiral angle, polar angle, number of turns, pitch, winding diameter, tube diameter and wall thickness of the structure, the mechanical properties of the structure can be regulated and controlled. Compared with conventional foam, honeycomb and other traditional energy absorption materials, the application can achieve the purpose of efficient buffering and energy absorption, and can achieve the effect of being reusable.
Owner:XIAN MODERN CONTROL TECH RES INST

Efficient assembly type steel-concrete composite beam bridge superstructure connecting structure and construction method

The invention relates to an efficient assembly type steel-concrete composite beam bridge superstructure connecting structure and a construction method, and belongs to the technical field of bridge engineering. Comprising a prefabricated concrete bridge deck, a steel beam, an umbrella-shaped perforated steel pipe connecting piece, a high-strength hook, a wedge-shaped steel accessory, a pi-shaped metal part, an H-shaped high-strength steel accessory, a high-strength bolt and a nut. The wedge-shaped steel accessory is pre-buried in the transverse joint direction of the prefabricated concrete bridge deck slab through a pi-shaped metal part, the bridge deck slab in the transverse joint direction is fastened through an H-shaped high-strength steel accessory, and the H-shaped high-strength steel accessory and the wedge-shaped steel accessory are fastened through a high-strength bolt and a nut; the umbrella-shaped perforated steel pipe connecting pieces are welded to the steel beams, the high-strength hooks are pre-buried in the prefabricated concrete bridge deck in the longitudinal joint direction, the high-strength hooks and the umbrella-shaped perforated steel pipe connecting pieces are hooked tightly after the bridge deck is in place, longitudinal steel bars penetrate through the holes, in the bridge direction, of the umbrella-shaped perforated steel pipe connecting pieces, and finally high-performance grouting materials are poured in the longitudinal joints.
Owner:HEBEI TRANSPORTATION INVESTMENT GRP CO LTD +5

Drainage sluice bent frame full-length cantilever scaffold

The full-length cantilever scaffold comprises a cantilever beam, a movable positioning pile and a scaffold body, the cantilever beam is installed above a bridge deck slab, and the two ends of the cantilever beam extend to the two sides of the bridge deck slab respectively; the movable positioning piles are installed at the two ends of the cantilever beam, each movable positioning pile comprises a U-shaped plate and a pressing plate located above the U-shaped plate, and the cantilever beam is arranged in the U-shaped plate; the scaffold comprises a vertical rod, a transverse horizontal rod, a longitudinal horizontal rod and a diagonal draw bar, the vertical rod is vertically fixed on the pressing plate, the transverse horizontal rod perpendicular to the cantilever beam is fixed on the vertical rod, the longitudinal horizontal rod is fixed on the transverse horizontal rod, the longitudinal horizontal rod is parallel to the cantilever beam, U-shaped pull-up pieces are arranged at the positions, close to the two ends, of the cantilever beam respectively, and the U-shaped pull-up pieces are connected with the diagonal draw bar. One end of the diagonal draw bar is fixed with the cantilever beam through the U-shaped pull-up piece, and the other end of the diagonal draw bar is in diagonal draw connection with the upper building structure. The problem that in the construction process of a tide gate hoist room, the stability of a scaffold structure foundation is difficult to guarantee in the flood season is effectively solved.
Owner:CCCC TDC ENVIRONMENTAL PROTECTION DREDGING

Earthquake isolation structure AMD control system based on earthquake energy storage principle

The invention provides a seismic isolation structure AMD control system based on the seismic energy storage principle, and relates to the technical field of structural engineering and damping control. The bottom of the building dissipates energy through the shock insulation support and the hydraulic inerter damper, earthquake input is converted into gravitational potential energy, mechanical energy and electric energy, and the energy storage module supplies energy to the active tuned mass damper arranged on the top of the upper structure. The system monitors structural response in real time through the acceleration sensor and the force sensor, the AMD intelligent control unit calculates and outputs control force capable of reducing upper vibration and generating reverse overturning bending moment, and therefore structural vibration is restrained and the shock insulation support is prevented from being pulled under the strong shock working condition, and the overall anti-seismic performance of the shock insulation structure is remarkably improved.
Owner:INST OF ENG MECHANICS CHINA EARTHQUAKE ADMINISTRATION

Construction method for superstructure above water

To provide a construction method for a superstructure above water that can efficiently construct a superstructure above water without performing work below a precast block installed on a support body erected on the water bottom ground.SOLUTION: A blocking frame body 8 is temporarily positioned by fitting it onto a support body 40 in a state in which it can move up and down. The support body 40 is loosely inserted into a through hole 3 of a precast block 2 so that the bottom surface of the precast block 2 is abutted against the upper surface of the blocking frame body 8. The precast block 2 and the blocking frame body 8 are moved downward to a predetermined installation height, and abutment maintaining means 9 maintains the upper surface of the blocking frame body 8 in abutment against the bottom surface of the precast block 2. Filling material 20 is filled between an outer peripheral surface of the support body 40 and an inner peripheral surface of the through hole 3, and the upper structure 1 in which the precast block 2 and the solidified filling material 20 are integrated is fixed to the top of the support body 40.SELECTED DRAWING: Figure 4
Owner:TOA KENSETSU KK

A method for hoisting an ultra-high superstructure section of an ultra-large container ship

The application discloses a hoisting method for an ultra-high superstructure unit section of an ultra-large container ship, and is mainly used for hoisting the complete superstructure unit section of the ultra-large container ship. The method solves the problems of the interference and the ultra-highness of the superstructure after the structure of the superstructure is completed, and ensures the safety of hoisting the superstructure under the premise of the complete structure by means of reasonable hoisting methods and strengthened design under the condition that the lifting capacity and lifting height of the gantry crane are limited. The hoisting scheme comprises a lifting ring on a cab deck, structure strengthening, temporary strengthening and a steel wire rope of the gantry crane. The application can solve the problem of the structural integrity of the superstructure, shorten the dock period, reduce the high-altitude operation, and ensure the safety of hoisting the ultra-high superstructure.
Owner:HUDONG ZHONGHUA SHIPBUILDINGGROUP +1