本文選題：丁壩 + 可靠度��； 參考：《重慶交通大學》2014年碩士論文

【摘要】：在航道整治和維護過程中，丁壩作為常見的整治建筑物形式，起到束窄水流、沖深河槽的作用。本文依托交通運輸部黃金水道通過能力提升技術重大專項“整治建筑物的可靠度和設計使用年限研究”展開，將長江中游荊江河段航道整治工程作為依托工程。針對如何保障整治建筑物的穩(wěn)定、確保工程質(zhì)量安全和效果、降低工程維護成本等技術難題和航道整治工程中整治建筑物可靠度設計分析方法相對落后的現(xiàn)狀，通過原型觀測、理論分析和水槽試驗相結合的技術手段，在對丁壩類整治建筑物現(xiàn)狀調(diào)查及損毀原因分析的基礎上，開展了對拋石丁壩可靠度和設計使用年限的研究，給出拋石塊體穩(wěn)定受力模型，，并構建了基于三參數(shù)威布爾分布的拋石丁壩可靠度模型，提出了受年際不同洪峰流量的洪水作用后丁壩剩余壽命計算方法。由于拋石丁壩結構復雜，影響其水毀的不確定因素眾多，因此采用量綱分析法建立拋石丁壩水毀程度量化公式，將丁壩水毀程度與其影響因素直接聯(lián)系起來，建立了基于水毀體積比的拋石丁壩安全性判別分析方法，能夠定量反映水毀因素與水毀程度之間的關系，從回歸方程的計算結果來看，計算值和試驗數(shù)據(jù)吻合較好，可為實際工程設計和維護提供參考依據(jù)。
[Abstract]:In the course of channel regulation and maintenance, spur dike, as a common form of regulation building, plays the role of narrow flow and deep channel. Relying on the golden waterway of the Ministry of Communications and Transport, the project of channel regulation in the middle reaches of Jingjiang River of the Yangtze River is regarded as the supporting project through the important project of "study on the reliability and design life of the renovated buildings", which is a major technical project of the Ministry of Communications and Transport. In view of the technical problems such as how to ensure the stability of the renovated buildings, ensure the safety and effect of the engineering quality, reduce the maintenance cost of the project and the relatively backward design and analysis methods of the reliability of the renovated buildings in the waterway regulation works, the prototype observation is carried out. On the basis of the investigation of the present situation and the cause of damage of the groyne regulation buildings, the reliability and design life of the gromping spur dike are studied by combining the theoretical analysis with the flume test. This paper presents a stable stress model for a riprap block, constructs a reliability model of a syringe based on a three-parameter Weibull distribution, and puts forward a method for calculating the residual life of a spur dike after flooding with different annual discharge of Hong Feng. Because of the complexity of the structure and the large number of uncertain factors affecting the water damage, the quantitative formula of the water damage degree of the syringe dike is established by using the dimensional analysis method, and the degree of water damage is directly related to the influencing factors. A safety discriminant analysis method based on the volume ratio of water damage is established, which can quantitatively reflect the relationship between the damage factors and the degree of water damage. From the results of the regression equation, the calculated values and the experimental data are in good agreement with each other. It can provide reference for actual engineering design and maintenance.
【學位授予單位】：重慶交通大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U617.91

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