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北京城市副中心行政办公区道路跨丰字沟桥梁创意

FENGZIGOU 9 BRIDGES - CONCEPT DESIGN

· 行车桥,投标、方案

Bridge general view

Plan view

Elevation

View from below with negative arch working in tension

The plates are assembled together with vertical posts

The vertical posts together with horizontal plates form a truss box立柱与水平板共同构成箱桁.

The shape of the plates are designed according to the bending moment shape in the deck (the following image shows a simplified example)桥面形状根据其弯矩图进行设计 (简图如下所示) :

It is inspired by the steel structure of XIXth century, where the plates are accumulated and connected with rivets, following the forces density设计灵感来自19世纪钢结构中力密度钢板由铆钉连接 :

Typical section of a steel beam with a reinforced flange, built as an accumulation of plates带加强翼的钢梁标准断面构成面 :

Calculation model

Stresses in the steel plates

Axial force in the arch

Some diagonals are used where the shear force between plates is very important板间有剪力的地方使用斜杆 :

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