某飞燕式系杆拱桥的设计简介

飞燕式系杆拱桥属于自平衡中承式拱桥,因其造型优美,跨度较大,近年来得到广泛采用。某飞燕式系杆拱桥主桥跨径布置为25 m+100 m+25 m=150 m,中跨拱肋为完整拱形结构,边跨拱肋为半跨拱形结构,拱肋均采用钢筋混凝土箱型断面。预应力钢绞线系杆锚在边拱肋端部,拱脚均固结在拱座上。拱肋设二榀分列,肋间中距为10.8 m,全桥共设11对吊杆,间距均为7 m。

Design of Flying-swallow Bowstring Arch Bridge

The flying-swallow bowstring arch bridge is the self-balanced half-through arch bridge,and is widely used in recent years because of its beautiful modeling and long span.The span of the main bridge of a fly-swallow bowstring arch bridge is arrange by 25 m + 100 m + 25 m = 150 m.Its arch rib of middle span is a complete arch structure and the arch rib of side span is the half-span arch structure.The arch ribs are all steel reinforced concrete box sections.The pre-stressed steel wire bowstring is anchored at the end of side arch rib.The arch feet are all concreted on the arch seat.The arch rib is listed by two pieces.The space between ribs is 10.8 m.There are 11 pairs of boom in the whole bridge with 7-m space.