發(fā)布時(shí)間：2018-10-20 19:40

【摘要】：直立式防波堤是最常用的外海防護(hù)建筑物和護(hù)岸建筑物之一，，作用于它的主要荷載是波浪力。由于其堤身整體性好，水上安裝工作量小，不需要大型起重設(shè)備，施工進(jìn)度快，箱中填以砂礫可降低造價(jià)等優(yōu)點(diǎn)近些年來，廣泛應(yīng)用于港口工程建設(shè)。 本文從物理模型試驗(yàn)和數(shù)值計(jì)算兩方面對(duì)直立式沉箱防波堤進(jìn)行了深入研究，首先，為了研究直立式沉箱防波堤上波浪力分布規(guī)律，尋求適合于此類型防波堤的波浪力計(jì)算公式，基于波浪水槽物理模型試驗(yàn)，對(duì)作用于堤身的波浪壓力試驗(yàn)數(shù)據(jù)進(jìn)行分析，得到作用在防波堤上的水平力和浮托力分布特性；針對(duì)試驗(yàn)結(jié)果計(jì)算分析，提出了合田良實(shí)波浪力計(jì)算公式的修正方法，使其適用于直立式沉箱防波堤計(jì)算波浪力。其次，由于作用在防波堤身的波浪力之間、波浪力矩之間具有高相關(guān)性，因此采用考慮相關(guān)變量的可靠性分析方法，提出直立式沉箱防波堤的抗滑移、抗傾覆破壞的設(shè)計(jì)表達(dá)式。最后利用彈性理論，剛性理論進(jìn)行模型處理，進(jìn)一步計(jì)算直立式防波堤在波浪力的作用下期望滑移量的變化。 在以上物理模型研究的基礎(chǔ)上，本文通過試驗(yàn)對(duì)直立式沉箱防波堤的波浪力進(jìn)行研究，從數(shù)值計(jì)算角度進(jìn)行了模擬、對(duì)合田良實(shí)公式進(jìn)行修正，對(duì)直立堤的可靠度和滑移量的計(jì)算研究。
[Abstract]:Vertical breakwater is one of the most commonly used offshore protective buildings and shore protection buildings. The main load acting on it is wave force. Due to its advantages such as good integrity of embankment, small workload of installation on water, no need of large lifting equipment, rapid construction progress and the advantages of reducing cost by filling the box with gravel, it has been widely used in port engineering construction in recent years. In this paper, the vertical caisson breakwater is studied in terms of physical model test and numerical calculation. Firstly, in order to study the distribution of wave force on vertical caisson breakwater, Based on the wave flume physical model test, the wave pressure test data acting on the embankment are analyzed, and the distribution characteristics of the horizontal force and the floating support force acting on the breakwater are obtained. Based on the calculation and analysis of the test results, a modified method for calculating the wave force in Hedan is put forward, which is suitable for the calculation of wave force in vertical caisson breakwater. Secondly, because of the high correlation between the wave force and the wave moment of the breakwater, the reliability analysis method considering the relevant variables is used to put forward the anti-slip of the vertical caisson breakwater. A design expression for resistance to overturning. Finally, the elastic theory and the rigid theory are used to model the vertical breakwater to calculate the expected slip under the action of the wave force. On the basis of the above physical model research, the wave force of vertical caisson breakwater is studied by experiments, and the numerical calculation is carried out to modify the formula. The reliability and slip of vertical embankment are calculated and studied.
【學(xué)位授予單位】：河北大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U656.2

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本文編號(hào)：2284185