四川绵阳飞云大桥的主桥系三跨系杆拱桥，横向设两根拱肋，构成“双弓体系”。

Two arch ribs are installed in transversal direction to form a"double bow system".

youdao

四川绵阳飞云大桥的主桥系三跨系杆拱桥，横向设两根拱肋，构成“双弓体系”。

Two arch ribs are installed in transversal direction to form a"double bow system".

youdao