67 results about "Macro-engineering" patented technology

The present application relates to the technical field of project management, and discloses an integrated management system and method for a large-scale project. The system comprises: a budget subsystem, used for obtaining target project information, and carrying out multi-level classification processing and coding processing on the target project information to obtain budget codes; a contract management subsystem, used for decomposing the target project information, generating a plurality of project contracts and associating the plurality of project contracts with the budget codes; a construction management and control subsystem, used for splitting the project contracts to obtain unit projects, encoding the unit projects to obtain unit codes, and associating quantity data corresponding to the unit projects with a preset construction drawing list; and a joint control subsystem, used for carrying out joint control on the project cost, the project progress and the project quality on the basis of a measurement visa so as to carry out integrated management on a large-scale project. The present application realizes integrated management of large-scale project construction.

The invention discloses a big water resource allocation project high and steep slope deformation prediction method based on Beidou data, and the method comprises the following steps: 1) setting a water resource allocation project slope deformation detection point, and obtaining the surface displacement data of the detection point in a T time period; 2) preprocessing the surface displacement data; 3) constructing a high and steep slope deformation prediction model with associated Patch and composite features; and 4) inputting the preprocessed surface displacement data into the high and steep slope deformation prediction model, and predicting slope deformation in a future t period to obtain a slope deformation prediction result. The method can be applied to slope deformation prediction of a large-scale engineering construction site, and a certain basis is provided for construction safety.

The invention provides a concrete crack prevention and control method and system based on digital twinning simulation, and relates to the technical field of digital twinning, and the method comprises the steps: building a digital twinning model of mass concrete, and simulating the temperature and stress development process of the mass concrete based on a thermal-mechanical coupling relation to predict the crack risk; generating an anti-crack strategy based on the predicted crack risk; and controlling intelligent maintenance equipment to execute the anti-cracking strategy so as to prevent and control concrete cracks. According to the method, the digital twin model of the mass concrete is constructed, dynamic evolution of temperature and stress is accurately simulated in combination with the thermal-mechanical coupling relation, the crack risk is effectively predicted, and prevention and control scientificity and accuracy are remarkably improved. The generated anti-crack strategy can guide intelligent maintenance equipment to realize automatic and precise maintenance operation, the manual intervention cost is reduced, and the crack occurrence probability is reduced, so that the durability and safety of a concrete structure are improved, and reliable technical support is provided for a large-scale engineering project.

The invention belongs to the field of engineering materials, and discloses an ultrahigh-strength steel plate with yield strength of 1500 MPa for engineering machinery and a manufacturing method of the ultrahigh-strength steel plate. Through reasonable component design and combination with proper rolling reduction, finish rolling temperature and quenching temperature, the microalloying effect of Nb, V and Ti is fully utilized, ultra-fine grain martensite is obtained, the effects of fine grain strengthening, precipitation strengthening and dislocation strengthening are fully exerted, the effects of C and alloy are exerted, and the Q1500 steel plate with the low carbon equivalent CEV is obtained. By means of the process, the high-strength steel plate which is good in production performance, easy to weld, 5-20 mm thick, 1500 MPa in yield strength and used for engineering machinery can be stably produced, and the high-strength steel plate is widely applied to large engineering machinery equipment such as crawler cranes and wheeled cranes.

The invention discloses a conflict quantification and priority evaluation method and system for 4D construction, and relates to the technical field of large-scale complex project management, and the method comprises the steps: obtaining a 4D construction operation space data set integrating space and time attributes in a construction process, carrying out the uniqueness screening of a process group, detecting and quantifying the conflict of the construction operation space, and carrying out the priority evaluation of the 4D construction operation space; screening out construction process groups with conflict relations; time conflict detection is carried out according to the time domain data corresponding to the construction process groups with the conflict relation, space conflicts are screened through the time conflicts, meanwhile, for each conflict obtained through screening, the conflict priority is given according to the time overlapping rate and the space overlapping rate, and a conflict grading report is generated. The method can deal with the characteristics of complex design, many building participants, many process intersections and the like in a large-scale construction project; in the preorder stage of design and construction, various potential conflicts are pre-judged in advance, and the defects of conflict processing in large-scale engineering in the prior art are effectively overcome.

Disclosed is a method for detecting an austenitic weld based on an ultrasonic-magnetic combination technique, and belongs to the field of non-destructive testing technique, comprising dividing the austenitic weld into a plurality of zones along a thickness direction to obtain divided zones; detecting the divided zones based on phased array ultrasonic testing (PAUT) and weak magnetic detection; and determining priorities of the PAUT and the weak magnetic detection according to a position of each of the zones, a defect type and a position of a zone in which a defect is located. The method integrates the PAUT technique and the weak magnetic detection technique to address issues such as missed detection, incomplete coverage, and the inability to detect defects when using an ultrasonic method for detecting the austenitic weld, thereby providing technical assurance for the application of austenitic stainless steel materials in high-end equipment and large-scale projects.

The invention relates to the technical field of waste utilization, and particularly discloses a novel composite material and a shortcut construction device.The novel composite material comprises soil particles and gravel particles; the volume ratio of a single soil particle to a single gravel particle is (2-3): 1; the mass ratio of the soil particles to the gravel particles is (1-1.5): 1. According to the novel composite material and the shortcut construction device, waste soil resources can be used for building a temporary shortcut in a large engineering project, utilization of waste soil is effectively improved, use of concrete is reduced, the engineering cost is reduced, and the construction efficiency is improved.

The invention discloses an isogeometric transient dynamics topological optimization method and system of a functional gradient plate structure, and belongs to the field of topological optimization design of functional gradient structures. According to the method, the problems of collaborative optimization of the gradient direction in the gradient material plane and the multi-material structure topology under the transient load effect and the like are solved. According to the technical key points, an isogeometric transient dynamics finite element analysis model of the functional gradient plate structure is constructed based on a reduced Gaussian integral method; constructing a smooth projection scheme and a material interpolation scheme of design variables of the functional gradient plate structure, and providing a transient dynamic topological optimization model of the functional gradient plate structure by taking the density of a control point and the volume fraction of a strong material attached to a plate unit as the design variables and the minimization of dynamic flexibility as a target; constructing a time domain adjoint equation of the topological optimization model, and obtaining sensitivity information of the target function; and finally, obtaining the optimal anti-vibration design of the functional gradient plate structure convenient for engineering application. The device is used for structural light-weight vibration reduction design of large engineering equipment under the strong vibration working condition.

The invention relates to a low-yield-ratio high-strength steel plate and a manufacturing method thereof, and belongs to the field of metallurgy. The metallographic structure of the steel plate is bainite, ferrite and nanoscale TiC precipitates, the proportion of the ferrite is 10%-20%, and the grain size is larger than or equal to 7 grades. The yield strength Rp0.2 is greater than or equal to 700MPa, the tensile strength Rm is greater than or equal to 850MPa, the yield ratio is less than or equal to 0.86, the cold bending property d is equal to 2a, and no crack is generated during 90-degree cold bending. The steel plate has high strength, high toughness and excellent cold bending performance, and can be widely applied to manufacturing of large-scale engineering machinery equipment or steel structures with strict requirements on formability and weldability, such as high-rise buildings, bridges, ocean platforms and the like.

The utility model discloses a supercharger installation structure and a large engineering machine. The supercharger installation structure comprises a cab lower bin, a support and a supercharger. A window is formed in an outer plate of the cab lower cabin; the support is arranged on the inner side face, located at the window, of the cab lower bin outer plate, one end of the support is hinged to the cab lower bin outer plate, and a locking mechanism is arranged between the other end of the support and the cab lower bin outer plate. When the locking mechanism is in a locking state, the bracket can completely cover the window; when the locking mechanism is in an unlocking state, the bracket can horizontally rotate towards the interior of the lower cabin of the cab around a hinge point of the bracket; the supercharger is fixed to the outer side face of the support and can rotate along with the support. According to the utility model, the difficult problem of maintenance or replacement of the supercharger on the large engineering machinery can be solved, an operator can maintain or replace the supercharger only by standing in the lower cabin of the cab and rotating the bracket towards the inside of the lower cabin of the cab, and the operation is simple and convenient.

The invention provides a concrete adiabatic temperature rise parameter iterative fitting method based on a segmentation model. The method comprises the steps of constructing a concrete adiabatic temperature rise segmentation fitting formula, determining an initial parameter value range, performing first parameter fitting calculation and performing convergence judgment. According to the method, an existing single curve fitting mode is abandoned, a straight line + double-index curve segmentation model is constructed based on cement hydration five-stage characteristics, a straight line is matched with an initial hydrolysis stage and an induction stage, a double-index curve is matched with subsequent three stages, and it is ensured that a fitting result is consistent with an actual heating process on the aspect of architecture; the problem that a traditional method is large in fitting deviation is effectively solved, the concrete adiabatic temperature rise fitting precision and calculation efficiency are remarkably improved, and the high-precision requirement of large projects for concrete temperature control design is met.

The invention discloses a treatment method and device for construction waste of sea-crossing bridge construction, and belongs to the technical field of construction waste recycling, the device comprises a concrete recycling module, a magnetic collecting tank, a cyclone separator, a water filtering tank, a water tank and other assemblies, and classified recycling and treatment of reinforcing steel bars, gravel, sand, cement paste and waste water are achieved through the multi-stage separation technology. The treatment method comprises the steps that after the construction waste is crushed, steel bars are separated through the magnetic collecting tank; the remaining concrete material enters a rotating second cavity, and graded separation of gravel, sand and cement paste is achieved through gradient rotating speed and inclined spraying; and finally, solid-liquid separation is completed through a cyclone separator, and the wastewater is recycled or discharged after reaching the standard after being treated. The method realizes efficient resource utilization of the construction waste, has the characteristics of modularization, low cost, environmental protection and the like, and is suitable for green construction of large-scale projects such as sea-crossing bridges and the like.

The invention discloses a tempering-free rare earth wear-resistant steel hot rolling method, which optimizes the matching of rough rolling and finish rolling technologies, realizes tempering-free heat treatment, avoids the use of a quenching and tempering heat treatment production process method disclosed in the prior art, effectively avoids low-temperature tempering brittleness, simplifies and shortens the process flow, reduces the production cost, and improves the production efficiency. The product has already been applied to large-abrasion parts of mining machinery, coal mining machinery, environmental protection machinery, conveying machinery and the like and key parts of heavy and heavy engineering with complex use working conditions.

The utility model discloses a spherical hinge structure convenient to disassemble and assemble. The spherical hinge structure comprises a ball head base fixedly arranged on a concrete foundation; the ball head is fixedly arranged on the ball head base; the supporting cylinder is arranged above the ball head base and used for being connected with a tide gate or a bridge or other structures; and the ball head bearing is mounted in the supporting cylinder through a bearing gland and is in running fit with the ball head, so that the ball head bearing, the bearing gland and the supporting cylinder integrally rotate horizontally and / or vertically around the ball head. The utility model is simple and convenient to disassemble and assemble, has the advantages of convenience in maintenance, high bearing capacity, low maintenance cost, strong practicability and the like, and can be applied to various large-scale engineering structures, such as bridge supports, tide gates and the like.

The invention discloses a multipurpose tower crane and a use method thereof, and the multipurpose tower crane is characterized in that a concrete conveying pipeline, a quick joint, a rotary conveying pump and a hose suspension system are integrated, so that the integration of vertical transportation and concrete conveying functions is realized; a conveying pipe, a cargo boom steel cable hanging hose and an electromagnetic device are arranged in the tower body standard section, and hose management is simplified; the device obviously reduces the construction cost, improves the concrete conveying efficiency of the super high-rise building, and is suitable for intensive construction of large engineering projects; compared with the prior art, the tower crane has the following advantages: 1, function integration: the tower crane has vertical transportation and concrete conveying functions, and the equipment utilization rate is increased by more than 50%; 2, the cost is saved: the rental expense of a concrete delivery pump truck is saved, and the comprehensive construction cost is reduced by 30%; efficient conveying is achieved, the concrete conveying height can reach 500 m, and the requirement of a super high-rise building is met; operation is convenient, the pipeline installation efficiency is improved by 70% through the design of a quick connector, and hose management is simplified through an electromagnetic adsorption device.

The scheme relates to the technical field of stress monitoring, in particular to a structure tension bolt stress monitoring system and method, through image acquisition, mechanical sensing, vibration monitoring and other multi-source data fusion, key parameters such as earthwork cracks, bolt stress and equipment vibration are comprehensively analyzed, single index misjudgment is avoided, and earthwork viscosity, crack analysis and vibration influence are introduced, collapse danger is accurately quantified, compared with traditional manual inspection or single sensor monitoring, hidden risks can be found earlier, the warning accuracy is significantly improved, the false alarm rate is reduced, based on the quantification grading of collapse danger value, intelligent matching of differentiated reinforcement measures, this dynamic strategy avoids resource waste caused by excessive reinforcement, and ensures that key risk points are quickly disposed, safety and economy are considered, and is suitable for multi-point cooperative management of large-scale engineering.

1. Name of the product in this design: Switch. 2. Application of this design: for network communication of large-scale engineering machinery. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the key design points: Design 1 3D view. 5. Other situations requiring explanation: Design 1 is designated as the basic design in this design patent.

The application discloses a hydraulic system and method based on large engineering machinery escalator lifting control, and belongs to the technical field of engineering machinery equipment. An oil cylinder is hinged between the escalator and a working platform; a first power unit and a second power unit are connected to a first electromagnetic reversing valve; the first electromagnetic reversing valve is connected to a second electromagnetic reversing valve and a third check valve; one oil outlet of the second electromagnetic reversing valve is connected to a small cavity of the oil cylinder, and the other oil outlet is connected to the small cavity of the oil cylinder through a throttle valve; the third check valve is connected to a large cavity of the oil cylinder, and the third check valve is connected in parallel with a load holding valve; and a pilot control port of the load holding valve is connected to the small cavity of the oil cylinder. The hydraulic system can realize the control of the escalator without starting the host machine; the hydraulic system has relatively high power density, can reduce the space occupancy rate, and is convenient for arrangement, maintenance and installation; the hydraulic system is independent of the hydraulic system of the host machine, does not affect the flow demand of other system functions, and has excellent scalability.

The invention discloses a damper intelligent sensing node and a real-time safety early warning system and method. In a modern large-scale engineering structure, the damper plays a key role of ensuring the safety and stability of the structure. The device comprises a sensor arranged on a damper body; the intelligent sensing node module is used for sensor data acquisition and primary processing; the edge calculation unit module comprises a damper performance evaluation algorithm module, a structure safety state evaluation algorithm module and a fault diagnosis algorithm module; the damper performance evaluation algorithm module adopts a Bi-LSTM network to realize evaluation of energy consumption performance and stability of the damper; the structure safety state evaluation algorithm module adopts a mixed information fusion model combining a D-S evidence theory and fuzzy comprehensive evaluation to realize the evaluation of the structure safety state; and the fault diagnosis algorithm module adopts a convolutional neural network to construct a fault diagnosis model. According to the invention, the timeliness and accuracy of early warning are improved, and reliable guarantee is provided for safe operation of an engineering structure.

The embodiment of the invention discloses a construction engineering drawing jump link automatic generation method and device, equipment and a medium, and relates to the technical field of jump link generation. The method comprises the following steps: receiving a drawing file, and identifying a jump source and a jump target from the drawing file; generating a jump source object based on the jump source and generating a jump target object based on the jump target; determining a target jump target object matched with the jump source object from all the jump target objects; and establishing a jump link between the jump source object and the target jump target object. Through an integrated process of automatic identification, object structured construction, intelligent matching and automatic link establishment, the core problems of low efficiency, insufficient accuracy and difficult maintenance in the prior art are systematically solved, and an efficient, accurate and sustainable maintenance drawing associated navigation technical support is provided for a large-scale engineering project.

The invention relates to the technical field of stress monitoring, in particular to a building split bolt stress monitoring system and method, which comprehensively analyzes key parameters such as earthwork cracks, bolt stress and equipment vibration through multi-source data fusion such as image acquisition, mechanical sensing and vibration monitoring, avoids misjudgment of a single index, and improves the accuracy of monitoring. Meanwhile, earthwork viscosity, crack analysis and vibration influence are introduced, the collapse danger is accurately quantified, compared with traditional manual inspection or single sensor monitoring, the method can find hidden risks earlier, the early warning accuracy is remarkably improved, the false alarm rate is reduced, differential reinforcement measures are intelligently matched on the basis of quantitative grading of collapse danger values, and the safety of the collapse is improved. According to the dynamic strategy, resource waste caused by excessive reinforcement is avoided, key risk points are ensured to be quickly disposed, safety and economy are both considered, and the method is suitable for multi-point collaborative management of large-scale projects.

The invention relates to the field of constructional engineering, in particular to a slope fitting type retaining wall formwork structure, a construction technology and a demolding method for single-side formwork construction in special environments with steep slopes and difficult supporting systems. Comprising a triangular system constructed by I-shaped steel, a plastic steel formwork, a back arris reinforcing wood square column and a triangular reinforcing wood square column so as to achieve angle adjustment and stability of the plastic steel formwork. The problem that in the prior art, large engineering mechanical equipment is needed to participate in hoisting is solved, and compared with the prior art, the hoisting device is low in cost, high in construction efficiency, high in safety and simple in structure.

The utility model discloses a composite reamer bit, and relates to the technical field of drill bits. The composite reamer bit comprises a bit body, a splicing mechanism is mounted at the top end of the bit body, and a sleeving bit is movably clamped to the outer side of the splicing mechanism; by arranging the splicing mechanism, a drill bit body and a sleeving drill bit can be promoted to be attached through a connecting pile, then a built-in motor in a splicing rod is matched to promote a threaded ring to drive a hinge rod to drive a splicing pin to move transversely through a double-section screw, and the sleeving drill bit and the drill bit body are connected; according to the reamer bit, the drilling diameter of the reamer bit can be effectively increased, the drill bit can adapt to more kinds of drilling requirements through the adjustment, and therefore the universality of the reamer bit is remarkably improved, and the application range of the reamer bit is remarkably widened. The drill bit can provide more flexible and efficient solutions regardless of the requirements of small precision operation or large engineering projects.

The invention discloses a construction progress dynamic simulation and correction system based on digital twinning, and relates to the technical field of building construction management, the system specifically comprises a physical layer, a data layer, a model layer, an application layer, an operation monitoring center and a message center, data interaction is realized between the physical layer and the data layer, data interaction is realized between the data layer and the model layer, and data interaction is realized between the application layer and the operation monitoring center. The model layer and the data layer realize data interaction with the application layer, the application layer and the physical layer realize data interaction, and the operation monitoring center and the message center respectively realize data interaction with the physical layer, the data layer, the model layer and the application layer. According to the invention, through integration of unmanned aerial vehicle modeling, a BIM cooperation platform and 4D construction software, automatic comparison, progress deviation analysis and resource dynamic scheduling of construction site live-action data and a plan model are realized, so that a non-technical construction team can rapidly implement high-precision digital twinborn management, and the real-time performance and decision-making efficiency of large-scale project progress control are improved.

The application discloses a nonlinear structural damping calculation method based on a generalized Van der Pol oscillator model, and comprises the following steps: firstly, a segment model free vibration wind tunnel test under static wind condition is carried out, and a torsional displacement response time history of the segment model is collected; secondly, a test amplitude of each vibration period is picked up from the displacement response time history, and an instantaneous structural damping corresponding to each test amplitude is calculated; finally, a relationship between a nonlinear structural damping ratio and a time history is fitted by using the instantaneous structural damping and the corresponding test amplitude, and an expression of the nonlinear structural damping ratio is obtained. The significant effect of the application is that the nonlinear structural damping can be quickly and accurately calculated through the structural free vibration decay response time history, so as to provide a reliable basis for vibration response calculation and design work of large engineering structures.

The application relates to a kind of transient load under the function gradient porous structure of multiphase filling dynamics topology optimization method and system, belong to the topology optimization design field of function gradient porous structure.The technical problems to be solved by the application are: how to fully exploit design space, construct the efficient function gradient porous structure of multiphase filling dynamics topology optimization method, realize the optimal anti-vibration design of porous filling structure with high-quality transient dynamic performance.Technical points: based on characteristic orthogonal decomposition method, the reduced transient dynamic finite element equation of function gradient porous multiphase filling structure is constructed;the material interpolation model and volume constraint model of function gradient porous multiphase filling structure are constructed, and the transient dynamic multiphase filling topology optimization reduced model with the minimum dynamic compliance as the optimization objective is proposed;the reduced sensitivity time-domain accompanying equation is constructed, and the sensitivity of dynamic compliance and volume constraint is efficiently calculated;based on ADMM-MMA hybrid optimization algorithm, the optimal topology design of function gradient porous multiphase filling structure is efficiently solved and obtained.The application can maximize the optimal anti-vibration performance of function gradient porous filling structure, and is especially suitable for the structure lightweight anti-vibration design of large engineering equipment.

According to the modular booster and the welding gun thereof, the booster is installed at the tail of a welding gun handle or connected between welding cables in series, the limitation of the national standard on the length of a wire pushing welding gun is broken through, and the traditional wire feeding distance of 3 meters is expanded to 30 meters or above. The booster breaks through the limitation of the movement range of manual welding, so that an operator is not limited by a limited space any more during large-scale engineering or complex station operation, and the difficulties and pain points of frequent equipment moving, posture adjustment and the like caused by insufficient wire feeding distance on site are solved. Meanwhile, due to an accurate wire feeding control structure and a stable power transmission system, the wire feeding stability can be remarkably improved, welding wire jamming and speed fluctuation are reduced, the welding seam quality is improved, the welding production efficiency is improved, and the automatic wire feeding device is an important innovation in the field of manual welding in equipment performance and operation mode.

The present application relates to the field of engineering vehicles, in particular to a method for compiling a load spectrum of a shovel working device fatigue life bench test procedure, comprising: collecting load signals of key parts of a shovel in the field, and preprocessing the load signals; performing a fatigue test on the shovel, obtaining input loads and output loads of each measuring point, and constructing a training set; establishing a shovel load spectrum prediction model, which is based on an NARX model; identifying the training set through a FROLS algorithm, and training the shovel load spectrum prediction model using the identified training set; performing inverse virtual iteration using the preprocessed load signals to obtain a field input load spectrum; performing rainflow statistical counting on the field input load spectrum to obtain a two-dimensional load spectrum; and converting the two-dimensional load spectrum into a one-dimensional load spectrum based on the equivalent damage principle and the variable amplitude method. The present application realizes fast backstepping and spectrum compiling of a large engineering machinery overall working device fatigue test loading spectrum, and significantly improves efficiency and precision.

The invention discloses a split mounting type composite material hollow tubular column type emergency supporting device which comprises a composite material hollow tubular column, an inner inserting connecting assembly, a flange piece, a bolt connecting piece and a jacking adjusting base, and the inner inserting connecting assembly and the flange piece are located at the two ends of the composite material hollow tubular column to form a module supporting unit. The module supporting units and the jacking adjusting base are connected through bolt connecting pieces, and the module supporting units and the jacking adjusting base are assembled into a whole set of emergency supporting device. According to the assembled structure, local buckling and end crushing damage of the composite pipe wall can be avoided, effective end connection of the large-diameter composite pipe is achieved, and the bearing capacity of the structure is improved. The invention has the properties of simple structure, high modularization degree, high assembly speed, low operation intensity, high construction efficiency and the like, and solves the problem that the emergency support cannot be quickly constructed when large engineering machinery cannot reach complex regions of mountainous regions; manufacturing, assembling and maintenance are easy, production and maintenance cost is low, and popularization is easy.