CN-121997426-A - Modeling method and system for cradle structure of railway bridge

CN121997426ACN 121997426 ACN121997426 ACN 121997426ACN-121997426-A

Abstract

The invention provides a modeling method and a system for a cradle structure of a railway bridge, which relate to the technical field of cradle construction, wherein the modeling method comprises the steps of obtaining key parameters of cradle design; generating a three-dimensional geometric model according to a component library special for hanging basket corresponding to key parameters and hanging basket types, carrying out dynamic simulation at different construction checking stages on the three-dimensional geometric model to obtain a stress evaluation result, carrying out adjustment and update on the three-dimensional geometric model according to the stress evaluation result to generate an adaptive model, carrying out drawing light-weight identification and drawing labeling treatment on the adaptive model to obtain a model modeling drawing, carrying out component identification and calculation statistics according to the adaptive model to generate a calculation report, and storing the adaptive model, the model modeling drawing and the calculation report in a knowledge base. The method and the system provided by the invention can improve the accuracy of the basket hanging structure, ensure the drawing efficiency and the calculation accuracy, and simultaneously help to shorten the design preparation time of other similar basket hanging construction.

Inventors

SUN WEI
LI DONG
WANG DONG
ZHAO KUN
ZHANG JIAN
JI CHANGQING
Sun Juncui
GAO WENWEN
MA ZHUO
YANG JIHAO

Assignees

中铁十局集团第三建设有限公司
中铁十局集团有限公司

Dates

Publication Date: 20260508
Application Date: 20260126

Claims (10)

1. The method for modeling the cradle structure of the railway bridge is characterized by comprising the following steps of: Acquiring key parameters of hanging basket design; generating a three-dimensional geometric model according to the key parameters and a hanging basket special component library corresponding to the hanging basket type; Carrying out dynamic simulation at different construction checking stages on the three-dimensional geometric model to obtain a stress evaluation result; Adjusting and updating the three-dimensional geometric model according to the stress evaluation result to generate an adaptive model; Carrying out drawing lightweight identification and drawing labeling processing on the adaptive model to obtain a model modeling drawing; performing component identification and calculation statistics according to the adaptation model to generate a calculation report; And storing the adaptive model, the model modeling drawing and the calculation report form in a knowledge base to finish modeling of the basket hanging structure.
2. The method for modeling a cradle structure of a railroad bridge according to claim 1, wherein generating a three-dimensional geometric model from the cradle-specific component library corresponding to the key parameters and the cradle type comprises: the method comprises the steps of according to the basket type, taking a corresponding basket-hanging special component library, wherein the basket-hanging special component library comprises a plurality of basket-hanging special components corresponding to the basket type; Performing parameter type coverage detection on the component parameters of the special hanging basket components in the special hanging basket component library by using the key parameters; when the parameter types of all the key parameters exist in the component parameters of at least one special component for hanging basket, comprehensively comparing the first parameter value corresponding to the key parameter with the second parameter value corresponding to the special component for hanging basket to obtain comprehensive similarity score; Screening out comprehensive similarity scores greater than a similarity threshold value to form a comprehensive similarity score set; taking the basket hanging special component corresponding to the maximum comprehensive similarity score in the comprehensive similarity score set as the target basket hanging special component corresponding to the key parameter; Correspondingly adjusting the special target basket hanging component through the key parameters to obtain a basket hanging design component; and generating a three-dimensional geometric model according to all the hanging basket design components.
3. The method of modeling a railroad bridge cradle structure according to claim 1, wherein performing dynamic simulation of the three-dimensional geometric model at different construction inspection stages to obtain a force evaluation result comprises: Selecting components of the three-dimensional geometric model according to the construction checking stage to obtain construction simulation components, wherein the construction simulation components are components of the three-dimensional geometric model, and the components affect the corresponding construction checking stage; According to the construction checking stage, performing simulation optimization on part of the construction simulation components to generate optimized simulation components; forming a phase model combination by the construction simulation component and the optimization simulation component; and carrying out dynamic simulation through the phase model combination to obtain a stress evaluation result.
4. A method of modeling a cradle structure of a railroad bridge according to claim 3, wherein the construction inspection phase includes an empty phase, a casting phase, a walking phase, and a demolition phase; performing simulation optimization on a portion of the construction simulation components according to the construction inspection stage to generate optimized simulation components, including: According to the construction checking stage, corresponding optimization characteristics are obtained; generating optimized feature parameters according to the inventory component data corresponding to the optimized features; The optimization feature and the corresponding optimization feature parameters are added to a portion of the construction simulation component to generate the optimization simulation component.
5. The method for modeling a railroad bridge cradle structure according to claim 4, wherein generating the optimized feature parameters from the stock member data corresponding to the optimized feature comprises: obtaining characteristic parameter loss according to use data and storage data of the inventory members corresponding to the optimized characteristics in the inventory member data, wherein the storage data comprises a parameter loss rate and storage time in unit time, and the use data comprises the use times, the use purpose of each use and the parameter loss amount corresponding to the use purpose; Generating the optimized characteristic parameters according to the standard characteristic parameters corresponding to the optimized characteristics and the characteristic parameter loss; the calculation formula of the optimized characteristic parameters is as follows: ; Wherein, the The parameters of the optimization feature are represented as, The standard characteristic parameters are represented by the values, Representing the rate of loss of the parameter per unit time, The storage time is indicated to be the time of storage, The number of times of use is indicated, The amount of parameter loss is indicated, Representing the characteristic impact factor.
6. The method of modeling a railroad bridge cradle structure according to claim 1, wherein adjusting and updating the three-dimensional geometric model according to the force evaluation result to generate an adaptive model comprises: carrying out difference value calculation on the stress evaluation result and a reference stress limit value corresponding to the construction checking stage to obtain a stress difference value; comparing the stress difference value with a difference value threshold value, and taking the stress difference value larger than the difference value threshold value as an abnormal stress difference value; forming a stress abnormal region according to the position points corresponding to the abnormal stress difference values; Similarity comparison is carried out on the stress abnormal region and the abnormal stress difference value of each position point in the stress abnormal region and the reference abnormal stress difference value of each reference abnormal region in an abnormal storage library and each position point in the reference abnormal region to obtain a similarity value set; Selecting a maximum similarity value in the similarity value set, and obtaining a basket hanging special member corresponding to the reference abnormal region according to the reference abnormal region corresponding to the maximum similarity value, wherein the reference abnormal region corresponds to the basket hanging special member; generating an adjustment value for the component parameter according to the maximum similarity value and the component parameter corresponding to the component to be adjusted; And adjusting and updating component parameters in the three-dimensional geometric model according to the adjustment values to generate the adaptation model.
7. The method for modeling a railroad bridge cradle structure according to claim 1, wherein performing graph lightweight recognition and graph annotation processing on the adaptive model to obtain a model modeling drawing, comprises: According to the specification of the drawing sheet, looking up a table to obtain a graph concentration limit; Performing screenshot detection on a graph view angle of the adaptation model according to the graph line density limit value so as to divide the graph view angle into a clear display area and a fuzzy display area; and carrying out light weight processing on the graph linearity of the fuzzy display area, and carrying out graph marking processing on the clear display area to obtain a model modeling drawing.
8. The method of modeling a railroad bridge cradle structure according to claim 7, wherein performing screenshot detection on a graph view angle of the adaptation model according to the graph line concentration limit value to divide the graph view angle into a clear display area and a fuzzy display area, comprises: According to the specification of the drawing, correspondingly scaling and capturing the drawing view angle of the adaptation model in a drawing template to obtain an adjustment view; obtaining the minimum detection size corresponding to the screenshot detection frame according to the graph line density limit value; Generating a corresponding screenshot detection frame according to the minimum detection size; performing screenshot linear detection on the adjustment view according to the screenshot detection frame; When at least one continuous line exists in the screenshot detection frame and linearity formed between the continuous lines is a dispersion relation, marking a first area corresponding to the screenshot detection frame as a fuzzy display partition, and taking a continuous area formed by the fuzzy display partition as the fuzzy display area, wherein the dispersion relation comprises one of the linearity relation of the intersection point of the at least one continuous line exists in the screenshot detection frame and the linearity relation of the intersection point of the continuous line does not exist in the screenshot detection frame; When no continuous line exists in the screenshot detection frame, only one continuous line exists or a plurality of continuous lines exist and are focused on an intersection point, marking a second area corresponding to the screenshot detection frame as a clear display partition, and taking a continuous area formed by the clear display partition as the clear display area.
9. The method of modeling a cradle structure of a railroad bridge of claim 1, wherein storing the adapted model, model modeling drawing, and a calculation report in a knowledge base to complete modeling of the cradle structure comprises: comparing the geographic information corresponding to the adaptation model with the reference geographic information to obtain geographic difference, wherein the geographic difference is used as a first entity part; Comparing the adaptation model with a reference model, comparing the model modeling drawing with a reference drawing, and comparing the calculated report with a reference report to obtain difference data of the adaptation model compared with the reference model, the model modeling drawing compared with the reference drawing and the calculated report compared with the reference report as a second entity part; establishing an association relationship between the first entity part and the second entity part; obtaining a knowledge triplet according to the first entity part, the second entity part and the association relation; and storing the knowledge triples in a knowledge base to complete modeling of the basket hanging structure.
10. A railroad bridge cradle structure modeling system, comprising: the acquisition unit is used for acquiring key parameters of the hanging basket design; The model generating unit is used for generating a three-dimensional geometric model according to the key parameters and the hanging basket special component library corresponding to the hanging basket type; the dynamic simulation unit is used for carrying out dynamic simulation of different construction checking phases on the three-dimensional geometric model so as to obtain a stress evaluation result; The adjustment updating unit is used for adjusting and updating the three-dimensional geometric model according to the stress evaluation result so as to generate an adaptation model; The drawing generation unit is used for carrying out drawing lightweight identification and drawing labeling processing on the adaptive model to obtain a model modeling drawing; A calculation amount statistics unit for performing component identification and calculation amount statistics according to the adaptation model to generate a calculation amount report, and And the knowledge storage unit is used for storing the adaptive model, the model modeling drawing and the calculation report form in a knowledge base so as to finish modeling of the basket hanging structure.

Description

Modeling method and system for cradle structure of railway bridge Technical Field The invention relates to the technical field of cradle construction, in particular to a method and a system for modeling a cradle structure of a railway bridge. Background The basket hanging construction is also called construction basket hanging, is a main device for the sectional construction of the prestressed concrete continuous beam, the T-shaped steel structure and the cantilever beam, and can integrally move forward along the track. The basket construction can adopt processes such as truss type basket, triangle type basket, prismatic basket, inclined pull basket and the like. The cradle construction is most widely applied in bridge construction. In the existing railway bridge hanging basket structure model design process, the efficiency is slow only through manual gradual modeling, the generated hanging basket structure model can also realize the visualization of a model structure, but checking calculation of stress parameters can not be completed well at each stage of hanging basket construction, so that the hanging basket structure model can not truly reflect the actual stress condition of the hanging basket structure in the actual construction process, the hanging basket structure design is invalid, and the whole railway bridge construction progress is affected. Disclosure of Invention The invention provides a modeling method and a modeling system for a cradle structure of a railway bridge, which are used for solving the technical problems that in the prior art, the modeling efficiency is slow only by manual step-by-step modeling, the generated cradle structure model can also realize the visualization of a model structure, but the checking calculation of stress parameters cannot be well completed at each stage of cradle construction, so that the cradle structure model cannot truly reflect the actual stress condition of the cradle structure in the actual construction process, and the design of the cradle structure is invalid. The invention provides a railway bridge hanging basket structure modeling method for achieving the aim and other related aims, which comprises the steps of obtaining key parameters of hanging basket design, generating a three-dimensional geometric model according to the key parameters and a hanging basket special component library corresponding to hanging basket types, carrying out dynamic simulation of different construction checking phases on the three-dimensional geometric model to obtain a stress evaluation result, carrying out adjustment updating on the three-dimensional geometric model according to the stress evaluation result to generate an adaptation model, carrying out drawing light weight identification and drawing labeling treatment on the adaptation model to obtain a model modeling drawing, carrying out component identification and calculation statistics according to the adaptation model to generate a calculation report, and storing the adaptation model, the model modeling drawing and the calculation report in a knowledge base to finish modeling of the hanging basket structure. In an embodiment of the invention, a three-dimensional geometric model is generated according to key parameters and a basket-specific component library corresponding to basket types, wherein the basket-specific component library comprises a plurality of basket-specific components corresponding to basket types according to the basket types, the key parameters are used for carrying out parameter type coverage detection on the component parameters of each basket-specific component in the basket-specific component library, when the parameter types of all the key parameters exist in the component parameters of at least one basket-specific component, the first parameter values corresponding to the key parameters are comprehensively compared with the second parameter values corresponding to the basket-specific components to obtain comprehensive similarity scores, a comprehensive similarity score set which is larger than a similarity threshold is formed by screening, the basket-specific component corresponding to the maximum comprehensive similarity score in the comprehensive similarity score set is used as a target basket-specific component corresponding to the key parameters, the target basket-specific component is correspondingly adjusted through the key parameters, the basket-specific component is obtained, and the three-dimensional geometric model is generated according to all the basket-designed components. In one embodiment of the invention, the dynamic simulation of different construction checking phases is carried out on the three-dimensional geometric model to obtain a stress evaluation result, and the method comprises the steps of selecting components of the three-dimensional geometric model according to the construction checking phases to obtain construction simulation components, wherein the construction s