学习了“关于桁架的极限荷載”以后,感到在选择桁架最可能的破坏图式时,对于缺乏估計和判断經驗的人,有时会感到困难,因而我拟在选择破坏图式以前,假設足够的参变数,卽n次超靜定的桁架,假設n+1个。由靜力平衡条件,采用Fσ_T,系数的形式,将各桿的单位应力表达为待定参变数的函数。只要求一次,卽可滿足各种破坏图式的計算需 After learning about the “ultimate load of trusses,” I felt that when choosing the most likely damage pattern for a truss, I sometimes felt difficult for those who lacked experience in estimating and judging. Therefore, I intend to assume enough before choosing to destroy the pattern. Parametric variables, 卽n times of statically indeterminate trusses, assume n+1. From the static equilibrium conditions, using the form of Fσ_T, coefficients, the unit stress of each rod is expressed as a function of the parameter to be determined. Only once required, you can meet the calculation needs of various damage patterns