Abstract: This paper presents a practical method and program to graph the influence line of kern moment.Basing on this,it also advances a method,to graph the influence line of normal stress at upper and lower edges of the main arch of arch bridges and its application to the construction of arch bridges without scaffold.

摘要： 本文提出了绘制拱桥核心弯矩影响线的具体方法和步骤,并在此基础上又提出了绘制拱桥主拱圈(拱肋)截面上、下缘正应力影响线的方法及其在无支架施工拱桥中的应用。