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高桩墩式及栈桥式碼头在船舶撞击下的振动計算很重要,而目前还沒有較滿意的一般性解答。本文提出了一种新的近似解法,建議将結构和船舶的碰撞,按平面上的弹塑性碰撞考虑,并对結构的单独振动采用三个自由度(x0,y0,φ0)的自由振动假定。文中根据桩台平面在基桩反力合力作用位置,添加相当弹簧支承的計算图式,导出了有关桩頂撞击反力的計算公式,文末并附有算例,因为新法是首次能够考虑結构通常存在的纵向振动(位移y0≠0)影响,所以本文有一定的实际意义,可供有关設計和科研人員参考。
The calculation of the vibration of the high pier and trestle piers under ship impact is very important, but there is no satisfactory general answer. In this paper, a new approximate solution is proposed. It is suggested that the collision between the structure and the ship be considered as an elasto-plastic collision on the plane. The free vibration assumption of three degrees of freedom (x0, y0, φ0) is used for the individual vibration of the structure. In this paper, according to the position of the pile platform at the combined force of the pile reaction force, the calculation formula of the equivalent spring support is added, and the calculation formula for the impact resistance at the pile top is derived. At the end of the text, examples are included because the new method is the first time that structures can be considered. The existence of longitudinal vibration (displacement y0 ≠ 0) influence, so this article has a certain practical significance, for reference of the relevant design and scientific research personnel.