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一、前言弹性地基上的梁式基础及闭合框架是工程中广泛采用的结构形式,这类结构的计算方法有差分法,矩阵位移法,链杆法等。其中矩阵位移法可分别由计算梁的刚度矩阵和地基的刚度矩阵出发,然后合成总刚度矩阵求解。也可从考虑地基抗力的观点,用弹性理论求解微分方程的方法,导出刚度矩阵进行计算,本文根据地基与基础共同作用的力学模型,用有限单
I. INTRODUCTION Beam foundations and closed frames on elastic foundations are widely used structural forms in engineering. The calculation methods for such structures include differential method, matrix displacement method, and chain link method. The matrix displacement method can be based on calculating the stiffness matrix of the beam and the stiffness matrix of the foundation respectively, and then synthesizing the total stiffness matrix to solve. From the point of view of considering the resistance of foundation, the elasticity theory is used to solve the differential equation and the stiffness matrix is derived for calculation. This paper uses the mechanical model based on the interaction between the foundation and the foundation and uses the finite sheet.