本文關(guān)鍵詞： 海冰 碼頭結(jié)構(gòu) 模型試驗(yàn) 破壞模式 冰載荷　出處：《天津大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著海洋經(jīng)濟(jì)的不斷發(fā)展,各國在或長(zhǎng)期或短期有海冰覆蓋的海域建起了各類工程結(jié)構(gòu)。然而,海冰對(duì)近海、海洋結(jié)構(gòu)造成的災(zāi)難性事故時(shí)有發(fā)生,因而研究海冰與結(jié)構(gòu)作用過程中的破壞模式十分必要。此外,冰載荷是寒區(qū)海域工程結(jié)構(gòu)物的主要控制載荷。鑒于此,本文通過室內(nèi)物理模型試驗(yàn)對(duì)海冰與結(jié)構(gòu)作用進(jìn)程和作用在結(jié)構(gòu)上的冰載荷進(jìn)行了研究。碼頭工程結(jié)構(gòu)物上所受到的冰載荷水平?jīng)Q定于海冰與結(jié)構(gòu)物的作用過程中海冰的破壞模式,而海冰的破壞模式又由其物理力學(xué)性質(zhì)所決定。因此,本文首先總結(jié)了國內(nèi)外學(xué)者對(duì)于海冰物理力學(xué)性質(zhì)的研究。在此基礎(chǔ)上,本文分析了海冰與結(jié)構(gòu)作用時(shí)的破壞模式和冰載荷分析的基礎(chǔ)性理論。在總結(jié)了冰力學(xué)模型試驗(yàn)的特點(diǎn)和應(yīng)遵循的原則的基礎(chǔ)上,本文對(duì)高樁承臺(tái)結(jié)構(gòu)、墩臺(tái)式靠船結(jié)構(gòu)模型設(shè)置了試驗(yàn)條件,安排了試驗(yàn)過程,在天津大學(xué)冰力學(xué)與冰工程實(shí)驗(yàn)室進(jìn)行了系統(tǒng)的模型試驗(yàn)。以對(duì)試驗(yàn)現(xiàn)象觀察為基礎(chǔ),對(duì)于海冰與兩種工程結(jié)構(gòu)作用過程中發(fā)生的破壞模式進(jìn)行了分析;以對(duì)試驗(yàn)測(cè)量數(shù)據(jù)進(jìn)行整理分析為基礎(chǔ),對(duì)于該類工程結(jié)構(gòu)物上的冰載荷做出了詳盡的預(yù)報(bào)。結(jié)合已發(fā)表的文獻(xiàn)和本次模型試驗(yàn)的研究,歸納總結(jié)了該類工程結(jié)構(gòu)物冰載荷的特點(diǎn),并對(duì)以后的研究方向進(jìn)行了展望。
[Abstract]:With the continuous development of marine economy, various engineering structures have been built in the sea areas covered by sea ice in the long or short term. However, the disastrous accidents caused by sea ice to the offshore waters occur from time to time. Therefore, it is necessary to study the failure mode in the process of interaction between sea ice and structure. In addition, ice load is the main control load of engineering structures in cold sea area. In this paper, the process of interaction between sea ice and structure and the ice load acting on structure are studied through indoor physical model test. The level of ice load on the structure of wharf engineering depends on the action process of sea ice and structure. The destruction pattern of sea ice. The failure mode of sea ice is determined by its physical and mechanical properties. Therefore, this paper firstly summarizes the research of physical and mechanical properties of sea ice by domestic and foreign scholars. In this paper, the failure mode of sea ice and structure and the basic theory of ice load analysis are analyzed. On the basis of summarizing the characteristics of ice mechanics model test and the principles to be followed, this paper deals with the structure of high pile cap. The test conditions were set up and the test process was arranged. The model tests were carried out systematically in the Ice Mechanics and Ice Engineering Laboratory of Tianjin University based on the observation of the experimental phenomena. The failure modes during the interaction between sea ice and two kinds of engineering structures are analyzed. Based on the collation and analysis of the measured data, the ice load on this kind of engineering structures is forecasted in detail, combined with the published literature and the study of the model test. The characteristics of ice load of this kind of structures are summarized and the future research directions are prospected.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U656.132

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本文編號(hào)：1481028