This paper presents a matrixstructuralanalysis of variable stiffness on the complete loading history of prestressed concrete grids with unbonded tendons.
本文采用变刚度的矩阵位移法分析无粘结预应力混凝土网格梁的加载全过程。
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In this paper, by using the method of matrixstructuralanalysis, the static stiffness model are derived from researching BKX-I varied-axis NC machine tool.