Structural Design and Stress Analysis of the Main Bridge of Yandu Bridge
The main bridge of Yandu Bridge in Yancheng City is a(60.9 + 105 + 60.9)m half-through continuous steel truss structure with a bridge width of 50.5 m.This paper introduces the overall design,structural design,static analysis and erection scheme of the bridge.The analysis shows that the half-through steel truss bridge scheme with two trusses solves the problem of landscape coordination of ultra-wide bridges;the large in-plane and out-of-plane bending moment effect of the main truss is a major characteristic of the structural stress;the vertical and lateral stiffness of the main truss is large,and the overall stability is good.The erection scheme based on unstressed state method ensures that the internal force and alignment of the completed bridge are consistent with the design objectives.
Yandu Bridgehalf-through steel trussunstressed state method
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