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某些水工建筑物,例如水电站厂房的下部结构,常采用体形复杂的厚壁构件。这类结构的杆件厚度与长度的比值较大,故内力计算应当考虑剪切变形和结合区刚性段范围的影响,以体现其力学特点。否则,可能造成较大误差。例如,杆端弯矩的计算误差可高达30～40％以上,因而影响结构的经济性与安全度。为此我国五十年代就进行了考虑剪切变形和结合区刚性段影响的研究。编制了相应的形常数和载常数计算表格,供位移法或近似法计算由短粗杆件组成的结构之用。但因计算工作量相当繁重而难以普遍推广。现
Some hydraulic structures, such as the lower structure of a hydropower plant, often use complex-shaped thick-walled components. The ratio of thickness and length of bars of this type of structure is relatively large, so the internal force calculation should consider the influence of shear deformation and the range of rigid sections of the bond zone to reflect its mechanical characteristics. Otherwise, it may cause a larger error. For example, the rod-end bending moment calculation error can be as high as 30-40%, thus affecting the economics and safety of the structure. For this reason, studies on the effects of shear deformation and the rigid section of the combined zone were carried out in the 1950s in China. Corresponding form constants and load constant calculation tables have been prepared for the displacement method or approximate method to calculate the structure composed of short thick rods. However, due to the heavy workload of the calculation, it is difficult to generalize. Now