structure ground造句

A deep beam model with spring bearing is given , based on the analysis of middle frame of frame and shear wall structure ground floor , which is sensitivity to floor rigidity . comparing rigid assumption to elastic assumption , shear error of frame is worked out , which is index of floor rigidity . conclusions are drawn that floor rigidity is independent of earthquake intensity and the most effect factor to floor rigidity is floor length to width ratio
以楼板按刚、弹性计算的框架柱的剪力误差值作为衡量楼板刚性的指标，通过对模型进行理论分析证明以往一些只能通过归纳总结得出而没有理论支持的结论：楼板的刚性同地震烈度无关；通过对影响楼板刚性的各个因素进行分析比较，得出楼板的长宽比是影响楼板刚性的主要因素，而增加楼板的厚度并不是增加楼板刚性的有效途径。
It's difficult to find structure ground in a sentence. 用structure ground造句挺难的