基于模型定義的知識重用及其在水工配筋上的應(yīng)用實現(xiàn)
發(fā)布時間:2018-05-18 01:11
本文選題:水工配筋 + 知識重用; 參考:《電子科技大學(xué)》2014年碩士論文
【摘要】:水工配筋是水利工程結(jié)構(gòu)設(shè)計的重要環(huán)節(jié),在減少水工配筋過程中的重復(fù)操作方面還存在很大的應(yīng)用研究空間。首先,同組鋼筋配置在水工模型的過程中存在大量相同或相似鋼筋的重復(fù)使用,導(dǎo)致大量的手動重復(fù)配筋操作:其次,鋼筋的三維建模中存在相同或相似鋼筋的重復(fù)建模,導(dǎo)致大量的重復(fù)建模操作。針對上述問題,本文提出一種基于模型定義的知識重用的解決方案及其實現(xiàn)。基于模型定義的設(shè)計知識重用的方案是從設(shè)計知識的特點(diǎn)出發(fā),將設(shè)計基本知識分為靜態(tài)知識與過程(動態(tài))知識;引入模型定義(MBD),作為知識表達(dá)的方式,更好的將配筋過程中的各類信息以數(shù)字化的方式在三維模型中進(jìn)行集成及管理;在此基礎(chǔ)上,采用基于相似性的知識重用及基于設(shè)計過程模板的知識重用設(shè)計方法,實現(xiàn)水工配筋的知識重用。因此,本文的研究重點(diǎn)分為兩個方面:首先,基于MBD的水工配筋知識表達(dá)和管理,提出了一種針對水工配筋的MBD知識表達(dá)方法和知識庫管理方法。分別依托于MBD數(shù)據(jù)集的非幾何信息規(guī)范,建立鋼筋模型的特征樹對靜態(tài)知識進(jìn)行表達(dá),依托于MBD數(shù)據(jù)集的幾何信息規(guī)范,結(jié)合模板技術(shù),建立配筋模板對過程知識進(jìn)行表達(dá)。在此基礎(chǔ)上,采用CATALOG管理MBD數(shù)據(jù)集的幾何信息,采用數(shù)據(jù)庫管理其非幾何信息,實現(xiàn)基于MBD的水工配筋知識庫管理。其次,基于知識重用的水工配筋及實現(xiàn),提出了一種結(jié)合水工配筋的靜態(tài)知識重用與過程知識的重用方案并對此進(jìn)行驗證與實現(xiàn)。其中,靜態(tài)知識重用設(shè)計依托于基于相似性的推理方法:過程知識重用設(shè)計依托于設(shè)計過程的模板技術(shù)所進(jìn)行的二次開發(fā)。結(jié)合兩類重用設(shè)計,形成水工配筋的整體知識重用方案,并通過與水工配筋相關(guān)“閥門井”模型實現(xiàn)并驗證本文的設(shè)計知識重用方法。本文最后對CATIA設(shè)計軟件進(jìn)行二次開發(fā),完成水工配筋快速實現(xiàn)的原型系統(tǒng),并給出面筋與箍筋兩種典型快速設(shè)計實例。本文所提方法可一定程度上減少水工配筋過程中的手動重復(fù)配筋操作與鋼筋重復(fù)建模。
[Abstract]:Hydraulic reinforcement is an important link in the structural design of water conservancy projects, and there is still a lot of room for application and research in reducing the repeated operation in the process of hydraulic reinforcement. First of all, there is a lot of repeated use of the same or similar steel bars in the process of hydraulic model, which leads to a large number of manual repeated reinforcement operations; secondly, there is repeated modeling of the same or similar steel bars in the three-dimensional modeling of steel bars. Results in a large number of repeated modeling operations. In view of the above problems, this paper proposes a solution and implementation of knowledge reuse based on model definition. The scheme of design knowledge reuse based on model definition is to divide the basic knowledge of design into static knowledge and process knowledge (dynamic knowledge) according to the characteristics of design knowledge, and to introduce model definition as the way of knowledge expression. Better integration and management of all kinds of information in the process of reinforcement in 3D model in digital way, then, the design method of knowledge reuse based on similarity and knowledge reuse based on design process template is adopted. The knowledge reuse of hydraulic reinforcement is realized. Therefore, this paper focuses on two aspects: firstly, based on the knowledge representation and management of hydraulic reinforcement based on MBD, a method of MBD knowledge representation and knowledge base management for hydraulic reinforcement is proposed. Based on the non-geometric information specification of MBD data set, the static knowledge is expressed by the characteristic tree of steel bar model, and the process knowledge is expressed by the geometric information specification of MBD data set, combined with template technology. On this basis, the geometric information of MBD data set is managed by CATALOG, and the non-geometric information is managed by database. The management of hydraulic reinforcement knowledge base based on MBD is realized. Secondly, a scheme of static knowledge reuse and process knowledge reuse based on knowledge reuse is proposed and verified and implemented. Among them, the static knowledge reuse design relies on the reasoning method based on similarity: the process knowledge reuse design is based on the secondary development of the template technology of the design process. Combined with two kinds of reuse design, the whole knowledge reuse scheme of hydraulic reinforcement was formed, and the design knowledge reuse method was realized and verified by the "valve well" model related to hydraulic reinforcement. At the end of this paper, the CATIA design software is redeveloped to complete the prototype system of rapid realization of hydraulic reinforcement, and two typical examples of rapid design of gluten and stirrups are given. The method proposed in this paper can reduce manual repeated reinforcement operation and rebar repeated modeling in hydraulic reinforcement process to some extent.
【學(xué)位授予單位】:電子科技大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:TV33
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