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一、基本假定高桩码头排架的计算,以往均简化为平面问题,纵梁按刚性支承连续梁计算,横梁按弹性支承连续梁计算。事实上,码头结构的纵横梁及桩基构成一空间体系,由于电子计算技术的发展,使有可能按空间结构进行计算。在本程序中假定纵、横梁及桩均系连续结合,并假定桩为弹性支承。在垂直荷载作用下,各结点处将产生垂直位移 w,绕 x轴转角θ_x 及绕 y 轴转角θ_y;在水平荷载作用下,由于面板与纵、横梁的整体性,通过初步实验已证明码头可视为一刚体而产生 x、y 向的水平位移 u,v 及绕竖轴 z 的转角θ_z。计算方法采用位移法,即杆件有限元法,通过计算杆件劲度矩阵及结构劲度矩阵求解各结点位移及码头整体位移,然后计算各杆件的内力。
First, the basic assumption that the calculation of piled wharf pallets, in the past have been reduced to a plane problem, the continuous beam calculation of rigid beams, beams by elastic support continuous beam calculation. In fact, the longitudinal beams and piles of the wharf structure form a space system, and as the development of electronic computing technology makes it possible to calculate according to the spatial structure. In this procedure, it is assumed that the longitudinal, crossbeams and piles are continuously combined and the piles are assumed to be elastic supports. Under the action of vertical load, each node will produce vertical displacement w, θx about the x-axis and θ_y about the y-axis. Under the horizontal load, due to the integrity of the panel and the longitudinal and transverse beams, it has been proved through preliminary experiments that the wharf Can be regarded as a rigid body and produce x, y horizontal displacement u, v and the vertical axis z rotation angle θ_z. The calculation method uses the displacement method, namely the finite element method of the bar, calculates the displacement of each node and the overall displacement of the pier by calculating the stiffness matrix of the bar and the structural stiffness matrix, and then calculates the internal forces of each bar.