【摘要】：目前我國交通基礎(chǔ)設(shè)施建設(shè)正經(jīng)歷著前所未有的高速發(fā)展,對公路的勘測設(shè)計(jì)、運(yùn)營維護(hù)等階段的信息集成與管理提出了更高、更新的要求,現(xiàn)有信息管理模式暴露出歸檔方式繁瑣、展示形式陳舊、分析功能匱乏、共享機(jī)制缺失等問題,難以滿足建設(shè)施工單位和運(yùn)維管理單位對信息管理、查詢、分析的需求。 本文綜合應(yīng)用公路勘測設(shè)計(jì)理論和信息模型理論,建立了公路信息模型,并在此基礎(chǔ)上,對公路三維交互式可視化理論與方法進(jìn)行了深入的研究。主要研究內(nèi)容和成果如下： 1.對空間地理信息、公路線路信息和運(yùn)維信息的數(shù)據(jù)模型和行為模型開展研究,設(shè)計(jì)了信息的提取算法和數(shù)據(jù)接口,并建立格網(wǎng)-R樹索引和格網(wǎng)-頂點(diǎn)-三角形三級索引兩種檢索方式進(jìn)行信息的檢索與定位,最終實(shí)現(xiàn)了公路信息模型的構(gòu)建。 2.在公路信息模型的基礎(chǔ)上,首先應(yīng)用約束Delaunay三角網(wǎng)理論進(jìn)行地形地質(zhì)建模；然后應(yīng)用參數(shù)化建模和交互式建模等方法進(jìn)行公路三維建模；最后將各種模型進(jìn)行無縫拼合,從而實(shí)現(xiàn)了公路三維場景的整體建模。 3.對大規(guī)模公路場景組織結(jié)構(gòu)進(jìn)行研究,采用有向無環(huán)圖結(jié)構(gòu)對復(fù)雜場景進(jìn)行分類管理、分層組織,并應(yīng)用視錐裁剪、動態(tài)調(diào)度、碰撞檢測等關(guān)鍵技術(shù),實(shí)現(xiàn)了三維場景的高效組織與調(diào)度。 4.采用顧及約束誤差的半邊折疊算法進(jìn)行模型的快速簡化,并通過創(chuàng)建操作層次結(jié)構(gòu)進(jìn)行模型的重構(gòu),實(shí)現(xiàn)了公路三維場景的交互式漫游、場景編輯與修改等功能。 5.綜合應(yīng)用上述研究成果,開發(fā)了面向公路建設(shè)與運(yùn)維管理的三維交互式可視化系統(tǒng),已成功應(yīng)用到長沙市南湖路湘江過江隧道和青蘭高速河北邯鄲段等工程項(xiàng)目的建設(shè)、運(yùn)維管理中。
[Abstract]:At present, the construction of transportation infrastructure in our country is experiencing an unprecedented rapid development, which puts forward higher and newer requirements for the information integration and management in the stages of highway survey, design, operation and maintenance, etc. The existing information management mode exposes the problems such as tedious archiving mode, obsolete display form, lack of analysis function, lack of sharing mechanism, etc. It is difficult to meet the needs of information management, query and analysis of construction units and operation and maintenance management units. Based on the theory of highway survey and design and the theory of information model, a highway information model is established in this paper. On this basis, the theory and method of 3D interactive visualization of highway are deeply studied. The main contents and results are as follows: 1. The data model and behavior model of spatial geographic information, highway line information and operation and maintenance information are studied, and the information extraction algorithm and data interface are designed. Finally, the highway information model is constructed by establishing the grid R-tree index and the grid vertex-triangle three-level index to retrieve and locate the information. 2. On the basis of highway information model, terrain and geology modeling is carried out by applying constrained Delaunay triangle network theory, and then highway 3D modeling is carried out by parameterized modeling and interactive modeling. Finally, all kinds of models are jointed seamlessly to realize the whole road 3D scene modeling. 3. The structure of large-scale highway scene organization is studied. The structure of directed acyclic graph is used to classify and manage the complex scene, and the key technologies, such as cone clipping, dynamic scheduling, collision detection and so on, are applied. The efficient organization and scheduling of 3D scene are realized. 4. The half-edge folding algorithm with constraint error is adopted to simplify the model quickly, and the model is reconstructed by creating the operation hierarchy. The interactive roaming, scene editing and modification of the 3D scene of highway are realized. 5. Based on the above research results, a 3D interactive visualization system for highway construction and operation and maintenance management has been developed. It has been successfully applied to the construction of Xiangjiang River Crossing Tunnel of Nanhu Road in Changsha City and Handan Section of Qinglan Expressway in Hebei Province. Operation and maintenance management.
【學(xué)位授予單位】：中南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U495

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