substituting beam meaning in Chinese

代替梁

The representative failure models of main beam are searched by incremental method and disadvantage loading in the control sections . the equal - substitute beam method is applied , which can simplify the reliability estimation on bearing capacity of beam - bridge . and the state function on bearing capacity reliability of beam - bridge is presented and the structure resistance theory ( or design ) probability model in state function is deduced
首先，针对梁式桥结构显著失效模式之一? ?主梁的失效，研究在用梁桥承载力可靠度分析方法，主要包括：根据梁桥损伤状况外观调查和结构内力分析，确定其承载力可靠度分析的控制截面；将增量荷载法和控制截面处不利布载相结合的方法应用于梁式桥结构体系主要失效模式的搜寻；引入等代梁法以简化梁桥承载力可靠度的估算；给出梁桥承载力可靠度功能函数及推导功能函数中结构抗力理论(或设计)概率模型。