| The study to structure analysis for offshore platform with positive pressure spouted and strengthened pile foundation of CB152 is accomplished, including the basis of platform design, the analysis of platform characteristic, the method of platform design, the structure type and main dimension of platform, the member dimension, the structure strength and stability of platform, the whole stability of platform, the estimate for the quantity of steel using, the infection and changing trend of the whole displacement of platform and strength checking stress under the different boundary constraint coefficient and so on. The environment condition of Chengbei oil field is referred as the basic one.The analysis of whole stability for offshore platform with positive pressure spouted and strengthened pile foundation is done through the analysis and calculation of CB152 platform, and the study to the infection and changing trend of the whole displacement of platform and strength checking stress under the different boundary constraint coefficient is accomplished, too.The whole stability of the offshore platform with positive pressure spouted and strengthened pile foundation affects the safety of platform directly, so the study to its ability of bear the weight and whole stability is key one of the study to feasibility of platform. Through studying the all datum, the calculation method of platform ability of level and vertical bear capacity and stability against tilting and gliding is given in this paper, and the method is used for the design of offshore platform with positive pressure spouted and strengthened pile foundation, too. Through calculation for CB152 platform whole stability, the follow conclusions are given: the ability of bear Capacity, the stability against tilting and gliding is satisfied, and during finite element calculating, we can simplify boundary condition to fixed fulcrum, and saving building modeling time.
|
PDF Full Text Request