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43results about How to "Improve design rationality" patented technology
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Design method of cement stabilization recycled concrete aggregate (RCA) base or subbase
ActiveCN104389253ASolve processing problemsExtended service lifeIn situ pavingsRoad surfaceCompressive strength
The invention relates to the technical field of construction waste recycling, and particularly discloses a design method of a cement stabilization recycled concrete aggregate (RCA) base or subbase. The design method comprises the steps: step one, determining materials and thicknesses of all structural layers of a pavement structure; step two, establishing a calculating model according to the materials and the thicknesses of all the structural layers, and determining the 7d cleavage strength design criteria and 7d unconfined compressive strength design criteria of the cement stabilization RCA base or subbase according to the calculating model; step three, carrying out the gradation composition design for the cement stabilization RCA on the base or subbase, and calculating and determining the design cement dosage Copt of the cement stabilization RCA, meeting the 7d cleavage strength design criteria and 7d unconfined compressive strength design criteria; the design is passed if Copt is smaller than or equal to 6%; if Copt is greater than 6%, the gradation composition design for the cement stabilization RCA is regulated to enable Copt to be smaller than or equal to 6%. By adopting the method, design is carried out rationally according to the technical nature of the construction waste RCA, the investment cost is low, use and operation are easy and simple, and the use effect is good.
Owner:CHANGAN UNIV
Design method of stable asphalt recycled aggregate layer
ActiveCN104358201ASolve processing problemsAddressing the Drawbacks of Alternative Design ApproachesIn situ pavingsShear stressEngineering
The invention relates to the technical field of construction waste recycling, and particularly relates to a design method of a stable asphalt recycled aggregate layer. The design method comprises the following steps: 1, determining a material and the thickness of each structure layer of a pavement structure according to a design method of 'highway asphalt pavement design specification' (JIG D50-2006); 2, calculating the maximum shearing stress taui of each asphalt pavement according to the material and the thickness of each asphalt pavement; 3 calculating the receptible rut depth [Rr] of the stable asphalt recycled aggregate layer according to the maximum shearing stress taui of each asphalt pavement, and then calculating a dynamic stability permissible value [DS] of the stable asphalt recycled aggregate layer; and 4 carrying out a gradation composition design of the stable asphalt recycled aggregate layer, determining the optimal asphalt use amount, and carrying out a rutting test for testing the dynamic stability DS, so as to enable DS to be greater than or equal to [DS]. The design method of the stable asphalt recycled aggregate layer, disclosed by the invention, is reasonable in design, low in cost, and easy to use and operate; the service life of the pavement can be prolonged; and the maintenance cost of the pavement is lowered.
Owner:CHANGAN UNIV
A design implementation method of a punching module
PendingCN109726424AEliminate duplication of effortImprove design efficiencySpecial data processing applicationsGraphicsPunching
The invention discloses a design implementation method of a punching module. The design implementation method comprises the steps that A, graphic elements and relevant parameters are input; B, performing feature extraction to obtain a feature recognition result, namely obtaining a relevant parameter set and a coordinate set; C, carrying out model selection calculation according to the parameter set, and carrying out substitution calculation to obtain a fixed seat and a female die sleeve outline set; D, performing correlation interaction calculation to obtain a graph set meeting conditions; E,judging whether the mutual logic and form-position relationship between the parts meet the standard or not; F, shape and position calculation is carried out, parameters, features and a graph set needed by the punching module are instantiated, and the parameters, the features and the graph set meeting the instantiation requirement are obtained; G, performing instantiation processing to obtain a visual punching scheme and an assembly result; And H, carrying out instantiation and then carrying out interactive processing to obtain a final punching scheme and related characteristics, graphs, bodiesand tree graph leaf nodes thereof.
Owner:成都数模码科技有限公司
A designing and implementation method of an elastic element module
InactiveCN109388875AEliminate duplication of effortImprove design efficiencyGeometric CADSpecial data processing applicationsGraphicsFeature extraction
The invention discloses a designing and implementation method of an elastic element module, which comprises the following steps: A, inputting graphic elements and related parameters; B, carrying out feature extraction to obtain a regular contour graph set for calculating elastic element required by pressing force; C, carrying out differential processing, and carrying out direction determination and area set calculation on that geometric graph set; D, quoting that black area set from the outside, and distributing the black area set; E, obtaining a region of a point and a finite element which are convenient to be described, and converting that distributable region set into a set of several points; F, obtaining a graphics set according with that conditions; G, judging whether that mutual logic and the shape-position relationship among the part conform to the standard; H, carrying out shape and position calculation to obtain a set of parameters, characteristic and graphics required by thatinstantiation; I, carrying out instantiation processing to obtain a visualized elastic element scheme and an assembly result; J, carrying out the post-example the interactive processing, and obtaining the final elastic element plan and its related characteristic, the graph, the volume, the tree diagram leaf node.
Owner:成都数模码科技有限公司
Office building space energy-saving design method using control on refrigeration energy consumption of air conditioner in summer as goal
ActiveCN108804802AGuaranteed accuracyGuaranteed authenticityGeometric CADDesign optimisation/simulationSimulationBuilding design
The invention discloses a space energy-saving design method using the control on refrigeration energy consumption of an air conditioner in the summer as a goal. The method comprises the following steps of determining an office building basic body type model and determining a body type design factor affecting energy consumption of a building according to a physical environment where the building islocated; performing simulation analysis of refrigeration energy consumption of the air conditioner in the summer on the basic body type model built in DesignBuilder software by separately using different plane forms, plane length-width ratios and layer heights as a single variable; acquiring an office building body type model with relatively low refrigeration energy consumption of the air conditioner in the summer, and accordingly further performing simulation analysis of refrigeration energy consumption of the air conditioner in the summer by separately using different building orientationsand space combination forms as the single variable; and further excavating the passive energy-saving design potency of the building body type, and thus achieving the energy-saving goal. According to the method provided by the invention, the reliability of model analysis is ensured, meanwhile accuracy of a simulation result is ensured; during the initial scheme stage of the office building design,the energy consumption simulation software DesignBuilder is used for performing simulation design, the interaction mechanism fusing design with analysis optimization is formed, and the energy-saving design efficiency of the office building is improved.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Charging head anti-dragging structure for charging pile
PendingCN111660847AAvoid damageExtended service lifeCharging stationsElectric vehicle charging technologyEngineeringStructural engineering
The invention provides a charging head anti-dragging structure for a charging pile. The structure comprises an alarm, a water blocking ring, a wire passing hole, a winding ring, a clockwork spring, anaxis rod, a containing cavity, a wire clamping hoop, an anti-dragging ring, a clamping plate and a pull rod; the water blocking ring is installed on the lower side of a hanging block and located on one side face of a charging pile body; the wire passing hole is formed in one side of the water blocking ring and located in the charging pile body; a charging wire penetrates through the water blocking ring and the wire passing hole in sequence; the alarm is assembled on the front side of the charging pile body and located on the upper side of a display screen; the containing cavity is formed in the charging pile body; the axis rod is mounted in the containing cavity; the clockwork spring is fixedly mounted on the annular side surface of the axis rod; the winding ring is fixedly installed on the outer side of the clockwork spring; the wire clamping hoop is installed in the containing cavity; the anti-dragging ring is installed in the containing cavity and located on the charging wire; andthe clamping plate is installed in a movable cavity; and the pull rod is installed on the upper side of the clamping plate. The structure is reasonable, a user is conveniently reminded to drag a charging head, and the charging head is effectively prevented from being damaged.
Owner:王敏敏
Large-span suspension cable pipeline bridge finished bridge wind cable line shape calculation method
ActiveCN111967085AImprove calculation accuracyImprove design rationalityGeometric CADDesign optimisation/simulationMechanicsCalculation methods
The invention relates to a large-span suspension cable pipeline bridge finished bridge wind cable line shape calculation method and belongs to the field of oil and gas pipeline crossing design. The method comprises the steps: estimating a wind cable initial end three-way component initial value according to a space parabola theory; iteratively calculating and obtaining corrected three-way component force of the starting end of the wind cable by utilizing a pitch line method; taking the three-way component force of the starting end of the wind cable and a design control point as iterative initial values, and calculating the wind cable shape and the unstressed length of each cable section by utilizing a space segmentation catenary theory; obtaining an iterative variable increment by utilizing a correction influence matrix method, repeatedly iterating, correcting the three-way component force of the starting end of the wind cable, and recalculating to obtain the wind cable shape and the unstressed length of each cable section. According to the method, the problems of inaccurate design, excessive assumptions and too large calculation errors in the prior art are solved, and the calculation accuracy of the line shape and the unstressed length of the finished bridge wind cable of the suspension cable pipeline bridge can be greatly improved by adopting the method to carry out design and calculation.
Owner:BC P INC CHINA NAT PETROLEUM CORP +2
A method for designing and realizing a reinforcing rib module
InactiveCN109255196AEliminate duplication of effortImprove design efficiencyDesign optimisation/simulationSpecial data processing applicationsGraphicsFeature extraction
The invention discloses a method for designing and realizing a reinforcing rib module, which comprises the following steps: A, inputting graphic elements and related parameters; B, carrying out feature extraction to obtain a graphics set according with that calculation rule of the reinforcing rib; C, carrying out differential treatment on each graphics set of that upper level to obtain graphics sets such as point and finite element which are convenient to be described; D, sampling and calculating according to the design rule of the reinforcing rib, and obtaining a graphics set which meets thecharacteristic conditions; E, carrying out shape and position calculation to obtain a solution set satisfying constraint condition, and instantiating a set of parameters, features and graph required by that reinforcing ribs; F, carrying out pre-example interactive processing; G, judging whether that mutual logic and the shape-position relationship between the parts conform to the standard, and ifso, executing H; H, outputting a set of parameters, features, and graphics required for standard instantiation; I, carrying out instantiation treatment to obtain visual reinforcing rib scheme and assembly result; J, carrying on the example later the interactive processing to obtain the final reinforcement plan and its related characteristic, the graph, the volume, the tree shape diagram leaf node.
Owner:成都数模码科技有限公司
Method for determining material composition for asphalt pavement interlayer treatment measures
ActiveCN104655500AImprove the rationality of composition designImprove design rationalityMaterial strength using steady shearing forcesThermal insulationShear angle
The invention discloses a method for determining material composition for asphalt pavement interlayer treatment measures. The method comprises the following steps: test-piece molding step: after test-pieces to be measured undergo thermal insulation for 5-6 h, the test-pieces are put into a shear test mold, and angle of the shear test mold is selected according to ratio of vertical load to horizontal load; after the test-pieces continuously undergo thermal insulation for 30 min, the shear test mold containing the test-pieces is put into a shear test machine for a shear measuring test; the maximum force sensed by a sensor in the shear test machine and the maximum displacement value when the maximum force is reached are recorded, and shear strength is calculated according to shear angle and shear area; the calculated shear strength is recorded into a table; and after all the test-pieces are measured and shear strength of all the test-pieces is recorded, the maximum shear strength is selected from the table. Cementing agent spraying amount, ballast grain sizes and ballast greval corresponding to the maximum shear strength are the determined material composition for asphalt pavement interlayer treatment measures.
Owner:CHINA ACAD OF TRANSPORTATION SCI
A design and implementation method of oblique wedge module
ActiveCN109344498AEliminate duplication of effortImprove design efficiencyGeometric CADDesign optimisation/simulationGraphicsFeature extraction
The invention discloses a method for designing and realizing an oblique wedge module, which comprises the following steps: A, inputting graphic elements and related parameters; B, carry out feature extraction, and screening and combine feature elements; C, carry out differential element processing, jud that measuring direction and envelope of the adjacent contours, and obtaining graphics set suchas points and finite element which are convenient to be described; D, describe that envelope of the merged contour of the graphic set, obtain the geometric information of the envelope, and matching and selecting an oblique wedge; E, carry out shape and position calculation, and instantiating a set of size parameter, coordinate characteristics, node positions and that like required by the inclinedwedge module; F, jud whether that shape-position relationship require by the instantiation of the related nodes conforms to the standard; G, outputting the coordinate system, width, angle and node position required for the instantiation of the coincidence; H, instantiate that inclined wedge to obtain a visual inclined wedge scheme and an assembly result; I, carry on the interactive processing after the instantiation, obtains the final oblique wedge scheme and its related characteristic, the graph, the volume, the tree graph leaf node.
Owner:成都数模码科技有限公司
Design and implementation method of waste discharge module
ActiveCN109117598AEliminate duplication of effortImprove design efficiencyDesign optimisation/simulationSpecial data processing applicationsGraphicsPunching
The invention discloses a method for designing and realizing a waste discharge module, which comprises the following steps: A, inputting graphic elements and related parameters; B, classifying that waste discharge module; C, obtaining a parameter set and a graphic set of waste discharge of trimming / punching type; D, obtaining a preliminary graphics set accord with that calculation rule of trimmingwaste discharge; E, obtaining that final graphic set which accords with the condition of trimming waste discharge; F, obtaining a preliminary graphics set accord with that calculation rule of punching waste discharge; G, obtaining that final graphic set which accords with the discharge condition of punch waste; H, obtaining an associated node; I, obtaining parameters, characteristics and graphicsset required for instantiated waste discharge; J, carrying out pre-instance interaction to obtain the parameters, features and graphics set required by the conforming instantiation; K, carrying out instantiation treatment to obtain a visual waste discharge scheme and an assembly result; L, carrying on the example after the interactive processing, obtaining the final waste discharge scheme and itsrelated characteristic, the graph, the volume, the tree graph leaf node.
Owner:成都数模码科技有限公司
Automatic generation method for die presser main rib line
PendingCN110851920AEliminate duplication of effortImprove design efficiencyGeometric CADManufacturing computing systemsOptimal designProcess engineering
The invention discloses a method for automatically generating a main rib line of a die presser, which is characterized by comprising the following steps of: A, inputting a parting line element and other related parameters; B, identifying the original graph, extracting feature influence elements and forming a classification element set; C, planning and solving the classification element set, and determining element nodes needing to be optimized; d, performing constraint satisfaction calculation on the element nodes needing to be optimized, generating a replacement element set, and combining thereplacement element set into a main reinforcement parting line element set; E, performing evaluation calculation on the main reinforcement parting line elements under a preset evaluation condition, and determining whether the main reinforcement parting line elements do not meet the evaluation condition; G, outputting a main reinforcement line element set of the material pressing device and obtaining an optimal solution; and H, outputting the main rib line of the presser. According to the method, the characteristic elements can be automatically identified, the element set is automatically interactively calculated and optimized, the optimal design scheme is automatically output, and the design efficiency and the design precision are greatly improved.
Owner:成都数模码科技有限公司
Protection voltage calculation method for passive breakdown protection device of sub-module device
PendingCN113834960AImprove design rationalityImprove accuracyParameter calibration/settingElectric power transfer ac networkOvervoltagePeak current
The invention discloses a protection voltage calculation method for a passive breakdown protection device of a sub-module, and the method comprises the steps: enabling a converter to achieve the breakdown through the overvoltage of the passive breakdown protection device connected in parallel with an AC port of the sub-module when a bypass switch of the sub-module refuses to operate, forming a short-circuit through-current state, and achieving the non-stop operation of a modular multi-level converter. According to the invention, the maximum voltage value under the operation condition of the sub-module, the sum of the breakdown voltage of the power device of the sub-module and the charging voltage increment of the peak current of the bridge arm during the closing period of the bypass switch of the sub-module are combined to obtain the protection voltage range calculation method of the passive breakdown protection device of the sub-module; the protection voltage value of the passive breakdown protection device of the sub-module is guided, and the design rationality and accuracy of the modular multilevel converter are improved.
Owner:CSG EHV POWER TRANSMISSION +2
Large-span suspension cable pipeline bridge finished bridge main cable line shape calculation method
ActiveCN112035928ASolve the problem of non-convergenceFast convergenceGeometric CADSpecial data processing applicationsControl theoryCalculation methods
The invention relates to a large-span suspension cable pipeline bridge finished bridge main cable line shape calculation method, which belongs to the field of oil and gas pipeline crossing design, andcomprises the steps of estimating a three-way component initial value of a main cable starting end according to a space parabola theory; iteratively calculating and obtaining corrected three-way component force of the initial end of the main cable by utilizing a pitch line method; taking the three-way component force of the starting end of the main cable and the design control point as iterativeinitial values, and calculating the shape of the main cable and the unstressed length of each cable section by utilizing a space segmentation catenary theory; and obtaining an iterative variable increment by utilizing a correction influence matrix method, repeatedly iterating, correcting the three-way component force of the initial end of the main cable, and recalculating to obtain the line shapeof the main cable and the unstressed length of each cable section. According to the method, the problems of inaccurate design, excessive assumptions and too large calculation errors in the prior art are solved, and the calculation accuracy of the line shape and the unstressed length of the finished main cable of the suspension cable pipeline bridge can be greatly improved by adopting the method tocarry out design and calculation.
Owner:BC P INC CHINA NAT PETROLEUM CORP +2
Physical deacidification and deodorization system for vegetable oil
PendingCN113444571AHigh precisionStable deodorization processFatty-oils/fats refiningVegetable oilMetallurgy
Owner:SHANDONG XIWANG FOOD
Design and implementation method of a waste discharge module
ActiveCN109117598BEliminate duplication of effortImprove design efficiencyDesign optimisation/simulationSpecial data processing applicationsGraphicsPunching
The invention discloses a method for designing and realizing a waste discharge module, which comprises the following steps: A, inputting graphic elements and related parameters; B, classifying that waste discharge module; C, obtaining a parameter set and a graphic set of waste discharge of trimming / punching type; D, obtaining a preliminary graphics set accord with that calculation rule of trimmingwaste discharge; E, obtaining that final graphic set which accords with the condition of trimming waste discharge; F, obtaining a preliminary graphics set accord with that calculation rule of punching waste discharge; G, obtaining that final graphic set which accords with the discharge condition of punch waste; H, obtaining an associated node; I, obtaining parameters, characteristics and graphicsset required for instantiated waste discharge; J, carrying out pre-instance interaction to obtain the parameters, features and graphics set required by the conforming instantiation; K, carrying out instantiation treatment to obtain a visual waste discharge scheme and an assembly result; L, carrying on the example after the interactive processing, obtaining the final waste discharge scheme and itsrelated characteristic, the graph, the volume, the tree graph leaf node.
Owner:成都数模码科技有限公司
Method for generating and distributing standard punch fixing seats
PendingCN110298070AEliminate duplication of effortImprove design efficiencyGeometric CADDesign optimisation/simulationTechnical standardFeature parameter
The invention discloses a method for generating and distributing standard punch fixing seats. The method comprises the following steps: A, inputting characteristic parameters and constraint parameters; B, determining an initial ID of the standard fixing seat; C, generating an alternative element set of the main characteristics of the fixed seat according to the initial ID; D, grouping the substitute element set; E, performing optimization calculation on elements in the group to obtain an optimized alternative element set; F, evaluating the optimized alternative element set to obtain a solutionset conforming to a set evaluation coefficient, and if no solution exists, executing the step E after correcting the correlation influence; and G, performing optimization calculation on the solutionset to obtain a comprehensive optimal solution. The method can improve design efficiency, can verify the correctness of the product and product process design more quickly, does not need manual trialand error, and can improve the design efficiency and rationality while the system carries out learning and knowledge accumulation at an extremely high speed and efficiency, and a design result can beoutput more quickly and better.
Owner:成都数模码科技有限公司
Method for determining the material composition of asphalt pavement interlayer treatments
ActiveCN104655500BImprove the rationality of composition designImprove design rationalityMaterial strength using steady shearing forcesMeasurement testEngineering
Owner:CHINA ACAD OF TRANSPORTATION SCI
Generation method of non-standard wedge and accessory standard part thereof
ActiveCN110298069AEliminate duplication of effortImprove design efficiencyGeometric CADDesign optimisation/simulationIntelligent designComputer science
The invention discloses a generation method of a non-standard wedge and an accessory standard part thereof. The generation method comprises the following steps: inputting elements and related parameters; according to different constraint conditions, selecting a wedge basic motion structure and a specific form of a wedge main body; initializing and generating alternative virtual parameters and characteristics of the tapered wedge; optimizing and calculating virtual parameters and characteristics replaced by the tapered wedges; judging whether the size and position of the wedge main body are reasonable; instantiating the wedge body to a structure tree; endowing the final size and position obtained by calculation in the previous step with a wedge virtual model, and enabling a wedge to be rendered; initializing a standard piece type list; initializing and generating virtual parameters and characteristics replaced by the standard pieces; optimizing and calculating virtual parameters and positions of various standard pieces; judging whether the size, number and position of the standard piece are reasonable or not; and instantiating the standard piece to the structure tree to complete output. The generation method can realize intelligent design of the non-standard wedge by automatically optimizing design elements and form and position sizes and automatically interacting the relationship between parts.
Owner:成都数模码科技有限公司
A Design and Realization Method of Standard Structure Module
ActiveCN109359355BEliminate duplication of effortImprove design efficiencyGeometric CADDesign optimisation/simulationGraphicsAlgorithm
The invention discloses a design and implementation method of a standard structure module, which comprises the following steps: A, inputting graphic elements and related parameters; B, according to that relevant factors of the input curve and the design rule of the side pin of the guide plate, initially determining the positions of the guide plate and the side pin to obtain a graphic set conforming to the calculation rule; C, determining that positions of the guide plate and the side pin again in combination with the parts that may generate interference, and if there is a distributable position, obtaining a graphic set such as a point, a finite element and the like which are convenient to describe; D, carrying out sampling calculation to obtain a graph set accord with that conditions; E, judging that mutual logic and the shape-position relationship between the parts according with the standard; F, carrying out shape and position calculation and instantiation processing to obtain parameter, features and graphics sets according with instantiation requirements; G, carrying out instantiation processing to obtain a visual standard structure scheme and an assembly result; H, carrying outinteractive processing after instantiation to obtain a final standard structure scheme and related features, graph, volume and tree graph leaf node.
Owner:成都数模码科技有限公司
Marine pump operation environment simulation system and method
PendingCN111104733AReliability Design GuaranteeImprove design rationalityGeometric CADDesign optimisation/simulationRotational axisImpeller
The invention provides a marine pump operation environment simulation system and method, and belongs to the field of fluid machinery numerical calculation. The system mainly comprises a model acquisition module, a motion law acquisition module and a model setting module. The motion law acquisition module acquires a marine pump swing law and a fluid medium impeller rotating shaft position change law according to the three-dimensional model established by the model acquisition module; the model setting module imports grid data obtained after the motion law and the three-dimensional model are subjected to grid division into a fluid analysis unit for processing, and simulates and builds a complete marine pump operation environment. The periodic angular displacement motion law of swinging of the marine pump is loaded into the fluid medium in a function form, so that the fluid medium and the marine pump are kept consistent in motion, and the design reasonability and the operation stability of the marine pump are improved; the dependence on a land pump design method in the marine pump design process can be reduced.
Owner:JIANGSU UNIV
Method and device for determining database division and table division strategy of database
PendingCN113076324AImprove design rationalityGuaranteed uptimeDatabase distribution/replicationForecastingTable (database)Engineering
The invention provides a database sub-database sub-table strategy determination method and device; the method comprises the steps: predicting the total data volume in a target database through employing the historical data volume of a database table in the target database in combination with a data prediction model, and obtaining the change trend of the total data volume; determining a peak time point when the total data volume reaches a threshold value according to the change trend of the total data volume; periodically segmenting and dividing the historical data in the database table to obtain a plurality of groups of historical data corresponding to different division periods; for each division period, verifying each group of historical data corresponding to the division period to obtain a corresponding verification result; according to verification results corresponding to all the division periods, judging whether historical data in the database table is changed or not, and determining a database division and table division mode according to a judgment result; and according to the peak time point and the database-dividing and table-dividing mode, determining a database-dividing and table-dividing strategy of the target database, so that the design reasonability of the database-dividing and table-dividing strategy is improved, and stable operation of an application system is ensured.
Owner:CHINA CONSTRUCTION BANK
Shale gas layered well tying collision risk prediction and early warning method under constraint of structural model
ActiveCN113868742AImprove scienceAvoid collision riskGeometric CADForecastingHorizontal wellsSimulation
The invention relates to the technical field of shale gas exploitation, and discloses a set of shale gas stratified system well collision risk prediction and early warning method under the constraint of a structural model for the development requirement of a shale gas stratified system, which comprises a two-dimensional gridding collision risk coefficient model in a target layer and a related collision risk early warning and target point adjustment method. Through the implementation of the method, dynamic structure modeling, an intelligent data loading technology, well site data transmission and application, geosteering and anti-collision comprehensive application, a three-dimensional visualization technology and the like are matched, a shale gas horizontal well three-dimensional visualization intelligent anti-collision technology system is established, the scientificity of horizontal well deployment can be improved. the risk of inter-well collision under the dense well pattern condition is avoided.
Owner:CHINA PETROLEUM & CHEM CORP +1
A Calculation Method for Wind Cable Alignment of Suspension Pipeline Bridge
ActiveCN112035929BImprove calculation accuracyImprove design rationalityGeometric CADSpecial data processing applicationsEngineeringStructural engineering
The invention relates to a method for calculating the wind cable alignment of a suspension pipeline bridge, which belongs to the field of crossover design of oil and gas pipelines. value, calculate the linear coordinates of the wind cable and the stress-free length of each cable segment; use the influence matrix method to correct the three-dimensional component force at the beginning of the wind cable, and recalculate the linear coordinates of the wind cable and the stress-free length of each cable segment. The invention solves the previous problems of imprecise design, too many assumptions, and too large calculation error, and adopts the method to carry out design and calculation, which can greatly improve the calculation accuracy of the wind cable line shape and the stress-free length of the suspension pipeline bridge.
Owner:BC P INC CHINA NAT PETROLEUM CORP +2
A Design Method for Asphalt Stabilized Recycled Aggregate Layer
ActiveCN104358201BSolve processing problemsAddressing the Drawbacks of Alternative Design ApproachesIn situ pavingsEngineeringRoad surface
The invention relates to the technical field of construction waste recycling, and specifically discloses a design method for asphalt-stabilized recycled aggregate layers, comprising the following steps: step 1, according to the design method of "Code for Design of Highway Asphalt Pavement" (JTG D50‑2006), Determine the material and thickness of each structural layer of the pavement structure; step 2, calculate the maximum shear stress τi of each asphalt surface layer according to the material and thickness of each asphalt surface layer; step 3, according to the maximum shear stress τi of each asphalt surface layer, Calculate the allowable rutting depth [Rr] of the asphalt-stabilized recycled aggregate layer; then calculate the allowable dynamic stability [DS] of the asphalt-stabilized recycled aggregate layer; step 4, carry out the gradation composition design of the asphalt-stabilized recycled aggregate layer, and Determine its optimal asphalt dosage; carry out rutting test to test its dynamic stability DS, so that DS≥[DS]. The design method of the asphalt-stabilized recycled aggregate layer of the present invention is reasonable in design, low in cost, easy to use and operate, can prolong the service life of the road surface, and reduce the maintenance cost of the road surface.
Owner:CHANGAN UNIV
Standard wedge intelligent matching method
ActiveCN110298066AEliminate duplication of effortImprove design efficiencyGeometric CADArtificial lifeDepth-first searchState parameter
The invention discloses a standard wedge intelligent matching method. The standard wedge intelligent matching method comprises the following steps: A, inputting functional elements; B, extracting feature element calculation information; C, carrying out depth-first search, and calculating a solution vector; D, establishing a vector container according to the data structure, storing the previously searched solution vectors, and establishing an index address of each solution vector; E, accessing the current solution feature; F, inputting an installation element, and extracting constraint conditions of an installation environment; G, using an ant colony algorithm for solving an optimization solution meeting the time step length or the number of iterations; and H, instantiating the space installation state parameters to obtain a final product scheme. According to the invention, while the design efficiency and rationality are improved, the system learns and accumulates knowledge at an extremely high speed and efficiency, and a design result can be output more quickly and better.
Owner:成都数模码科技有限公司
A Design Method for Cement Stabilized Recycled Aggregate Base or Subbase
ActiveCN104389253BSolve processing problemsExtended service lifeIn situ pavingsRoad surfaceCompressive strength
The invention relates to the technical field of construction waste reuse, and specifically discloses a design method for a cement-stabilized recycled aggregate base or subbase. Step 1, determine the material and thickness of each structural layer of the pavement structure; Step 2, establish a calculation model according to the material and thickness of each structural layer, and determine the 7d splitting strength design standard and 7d design standard for unconfined compressive strength; step 3, carry out the gradation composition design of the cement-stabilized recycled aggregates of the base or subbase, and calculate and determine which meets the 7d splitting strength design standard and the 7d unconfined compressive strength design standard Design cement dosage Copt of cement-stabilized recycled aggregate; if Copt≤6%, the design is passed; if Copt>6%, adjust the gradation composition design of cement-stabilized recycled aggregate so that Copt≤6%. The method is rationally designed according to the technical properties of the construction waste recycled aggregate, and the input cost is low, the operation is simple and the use effect is good.
Owner:CHANGAN UNIV
Calculation method of main cable alignment of long-span suspension pipeline bridge
ActiveCN112035928BSolve the problem of non-convergenceFast convergenceGeometric CADSpecial data processing applicationsControl theoryMechanical engineering
Owner:BC P INC CHINA NAT PETROLEUM CORP +2
Suspension cable pipeline bridge forming wind cable line shape calculation method
ActiveCN112035929AImprove calculation accuracyImprove design rationalityGeometric CADSpecial data processing applicationsEngineeringStructural engineering
The invention relates to a suspension cable pipeline bridge forming wind cable line shape calculation method, which belongs to the field of oil and gas pipeline crossing design, and comprises the steps of estimating wind cable starting end three-way component force according to a space parabola theory; taking the three-way component force at the starting end of the wind cable as an iterative initial value, and calculating the linear coordinate of the wind cable and the unstressed length of each cable section; correcting the three-way component force of the starting end of the wind cable by using an influence matrix method, and recalculating to obtain the linear coordinate of the wind cable and the unstressed length of each cable section. According to the method, the problems of inaccuratedesign, excessive assumptions and too large calculation errors in the prior art are solved, and the calculation accuracy of the line shape and the unstressed length of the finished bridge wind cable of the suspension cable pipeline bridge can be greatly improved by adopting the method to carry out design and calculation.
Owner:BC P INC CHINA NAT PETROLEUM CORP +2
Large-span suspension cable pipeline bridge finished bridge wind cable line shape calculation method based on pitch line method
InactiveCN112035926AImprove calculation accuracyImprove design rationalityGeometric CADSpecial data processing applicationsCatenaryMechanics
The invention relates to a large-span suspension cable pipeline bridge finished bridge wind cable line shape calculation method based on a pitch line method, and belongs to the field of oil and gas pipeline crossing design, and the method comprises the steps: estimating a wind cable initial end three-way component initial value according to a space parabola theory; iteratively calculating and obtaining corrected three-way component force of the starting end of the wind cable by utilizing a pitch line method; taking the three-way component force of the starting end of the wind cable and a design control point as iterative initial values, and calculating the wind cable shape and the unstressed length of each cable section by utilizing a space segmentation catenary theory; and correcting thethree-way component force of the starting end of the wind cable by using an influence matrix method, and recalculating to obtain the wind cable shape and the unstressed length of each cable section. According to the method, the problems of inaccurate design, excessive assumptions and too large calculation errors in the prior art are solved, and the calculation accuracy of the line shape and the unstressed length of the finished bridge wind cable of the suspension cable pipeline bridge can be greatly improved by adopting the method to carry out design and calculation.
Owner:BC P INC CHINA NAT PETROLEUM CORP +2
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