發(fā)布時間：2018-05-22 11:34

  本文選題：地下管網(wǎng) + 三維空間數(shù)據(jù)模型��； 參考：《武漢大學(xué)》2016年博士論文

【摘要】：城市地下管網(wǎng)是城市基礎(chǔ)設(shè)施建設(shè)的重要組成部分,是一座城市能量輸送、物質(zhì)傳輸、信息傳遞、排澇減災(zāi)和廢物排棄的重要載體。作為城市地下空間中的一種重要對象,正承載著日益增長的城市居住人口及城市活動所帶來的前所未有的壓力,成為了我國城市化建設(shè)進(jìn)程中的重中之重,日益呈現(xiàn)出錯綜復(fù)雜、相互交疊的立體特征,并具有施工不可見性、難度大、投資大、開發(fā)后不易改變等特點,因此,實現(xiàn)城市地下管網(wǎng)定位管理精細(xì)化、安全監(jiān)管綜合化、應(yīng)急處置高效化和信息共享全面化已成為地下管網(wǎng)信息管理的本質(zhì)目標(biāo)。但是,目前面向地下管網(wǎng)的三維空間數(shù)據(jù)模型及其相關(guān)標(biāo)準(zhǔn)不統(tǒng)一,在數(shù)據(jù)信息含量、空間表現(xiàn)和分析能力等方面都存在著不足,三維模型缺乏完整的精細(xì)化構(gòu)模和井室內(nèi)外一體化表達(dá)的有效方法,造成了地下管網(wǎng)信息資源在表達(dá)和理解上各有不同,共享困難,建成的地下管網(wǎng)3D GIS成為了“信息孤島”,三維模型建模自動化程度不高且更新困難,難以實現(xiàn)業(yè)務(wù)融合和協(xié)同互聯(lián),更無法支撐各種管網(wǎng)專業(yè)領(lǐng)域的知識模型。針對以上問題,本文以昆明市地下管網(wǎng)信息應(yīng)用與共享平臺建設(shè)為基礎(chǔ),以城市地下管網(wǎng)實體為研究對象,采用理論與應(yīng)用研究相結(jié)合的方法,提出了一種顧及幾何、時態(tài)、拓?fù)�、語義的一體化的地下管網(wǎng)三維空間數(shù)據(jù)模型,并在模型基礎(chǔ)上,尋求一種自動化程度高、精細(xì)化、便于更新維護(hù)的三維構(gòu)模方法。本論文主要的研究工作如下：(1)分析了面向智能管網(wǎng)的地下管網(wǎng)綜合管理的需求及其內(nèi)涵,提出了一體化的地下管網(wǎng)三維空間數(shù)據(jù)模型。以三維地下管網(wǎng)對象為核心,包含了語義數(shù)據(jù)模型、幾何數(shù)據(jù)模型和時態(tài)數(shù)據(jù)模型三個部分,通過現(xiàn)實世界中的地下管網(wǎng)→地下管網(wǎng)本體系統(tǒng)→地下管網(wǎng)對象類庫→地下管網(wǎng)時空對象的映射和轉(zhuǎn)換,將地下管網(wǎng)實體的幾何特征、時間特征、拓?fù)涮卣�、語義特征有機(jī)地結(jié)合起來,既便于模型在計算機(jī)中得以實現(xiàn),又保障了語義信息無歧義地傳輸和執(zhí)行。(2)提出了基于CSG+Sweep+體布爾運算的混合方法來自動化、完整地建立三維地下管網(wǎng)精細(xì)模型的新方法。將地下管網(wǎng)實體分為了抽象化的不規(guī)則形體的管點實體、尺寸結(jié)構(gòu)屬性驅(qū)動的管點實體、拓?fù)溥B接關(guān)系驅(qū)動的管點實體和管段實體四類,不同的實體采用不同的表面數(shù)學(xué)建模方法,并設(shè)計了3種基本幾何元素和7種實體對象的數(shù)據(jù)結(jié)構(gòu),研究了井室內(nèi)外一體化表達(dá)的方法。(3)研究了地下管網(wǎng)三維模型數(shù)據(jù)在線更新的方法。針對管網(wǎng)變化后整體生成管網(wǎng)三維模型,時間長而無法滿足應(yīng)急等相關(guān)應(yīng)用需求的難題,采用面向服務(wù)的架構(gòu)(SOA),在服務(wù)器和客戶端采用XML進(jìn)行數(shù)據(jù)交換,實現(xiàn)了管網(wǎng)二維數(shù)據(jù)變更后,同步在線自動化局部更新管網(wǎng)三維模型數(shù)據(jù)的技術(shù)流程,填補(bǔ)了國內(nèi)的空白。(4)基于上述研究成果,以昆明市地下管網(wǎng)信息應(yīng)用與共享平臺為原型系統(tǒng),重點闡述了其中三維系統(tǒng)的實現(xiàn)路線及其建模效果,并以兩個真實的應(yīng)用案例,驗證了本文研究成果的可行性、有效性和應(yīng)用價值。
[Abstract]:Urban underground pipe network is an important part of urban infrastructure construction. It is an important carrier of urban energy transport, material transmission, information transmission, flood disaster reduction and waste disposal. As an important object in urban underground space, it is carrying the unprecedented population and unprecedented urban activities. The pressure has become the most important thing in the process of urbanization in China. It is becoming more and more complicated and overlapping with each other. It has the characteristics of construction imperceptibility, great difficulty, large investment, and not easy to change after development. Therefore, it can realize the fine management of the location and management of the urban underground pipe network, the comprehensive safety supervision and management, the efficient emergency disposal and the high efficiency. The comprehensive information sharing has become the essential goal of the underground pipe network information management. However, the three dimensional spatial data model of underground pipe network and its related standards are not uniform, and there are shortcomings in the data information content, spatial representation and analysis ability, and the three-dimensional model lacks complete fine modeling and interior and exterior integration. The effective method of expression makes the information resources of underground pipe network different in expression and understanding, and the sharing is difficult. The underground pipe network 3D GIS has become "information island". The 3D model modeling is not highly automated and difficult to update. It is difficult to achieve business integration and collaboration, and can not support the knowledge of the professional fields of various pipe networks. In view of the above problems, this paper, based on the construction of information application and sharing platform of underground pipe network in Kunming City, takes the urban underground pipe network entity as the research object and combines theory and application research, and puts forward a three-dimensional spatial data model of underground pipe network considering geometry, temporal, topological and semantic integration. On the basis of the model, a three-dimensional modeling method with high automation, fine and convenient maintenance is sought. The main research work of this paper is as follows: (1) the requirement and connotation of the integrated management of underground pipe network for intelligent pipe network are analyzed, and an integrated three-dimensional spatial data model of underground pipe network is put forward. As the core, it includes three parts: semantic data model, geometric data model and temporal data model. Through the mapping and transformation of underground pipe network, underground pipe network ontology, underground pipe network object class library and underground pipe network, the geometric features, time characteristics, topological features and semantics of the underground pipe network are made. Combining features organically, it can not only facilitate the realization of the model in the computer, but also guarantee the unambiguous transmission and execution of the semantic information. (2) a new method of establishing a fine model of the three-dimensional underground pipe network based on the CSG+Sweep+ Boolean operation is proposed. The tube point entity of the regular form, the pipe point entity driven by the dimension structure attribute, the tube point entity and the tube segment entity driven by the topological connection relation, four kinds, the different entity uses the different surface mathematical modeling method, and designs the data structure of 3 basic geometric elements and 7 entity objects, and studies the method of the integration expression inside and outside the well chamber. (3) the method of online updating of 3D model data of underground pipe network is studied. In view of the problem that the three dimensional model of pipe network is generated after the pipe network changes, it is difficult to meet the requirements of the emergency and other related requirements. The service oriented architecture (SOA) is used to exchange data between the server and the client by XML, and the two dimensional data change of the pipe network is realized. The technical process of synchronizing online automation to update the 3D model data locally, (4) based on the above research results, taking the information application and sharing platform of Kunming underground pipe network as the prototype system, the realization route of the 3D system and its modeling effect are emphatically expounded, and two real application cases are tested. It proves the feasibility, effectiveness and application value of the research results in this paper.
【學(xué)位授予單位】：武漢大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2016
【分類號】：P208;TU990.3
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本文編號：1921893