The calculation method for breaced plane frame of parabolic type steel trestle was introduced in the paper and it was proved by the practical examples.

介绍抛物线式钢栈桥平联的计算方法，并通过实例予以验证。

youdao

To this end, sheet-type invert trestle of low cost, simple structure, convenient mobility and light weight is becoming increasingly popular at tunnelling.

为此，自行设计制造成本低、结构简单、移动快捷、轻便的片式仰拱栈桥在隧道施工现场愈来愈普遍。

youdao