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本文用等区段的折线图形表示地基反力分布,并取分段点为变形协调点。协调点处的地基沉陷采取用应力面积法按梁宽范围内实际沉陷面积求得的等代均值沉陷。对梁逐段利用初参数表示的挠度曲线方程计算分段点挠度时,引入梁与地基间的变形连续条件,归纳整理后,得到解算各分段点处地基反力强度的变形协调法方程通式。文中制备了经常遇到的常截面和变截面对称情况地基梁方程通式表格,供实际使用,并附实例对本法和链杆法结果作了比较。
In this paper, the contour of the ground is represented by a polygonal line graph of equal sections, and the section points are taken as the deformation coordination points. The subsidence at the coordination point adopts the equal-average mean subsidence determined by the area of actual subsidence within the width of the beam using the stress area method. When the segmental point deflection is calculated by using the deflection curve equation represented by the initial parameter in the beam-by-paragraph section, the deformation continuous condition between the beam and the foundation is introduced. After the induction and consolidation, the deformation coordination equation for solving the foundation reaction force strength at each subsection point is obtained. general formula. In this paper, a general formulae for the base beam equations of the symmetry of the regular section and the variable section, which are often encountered, are prepared for practical use. The results of this method and the chain bar method are compared with examples.