下承式无风撑系杆拱桥设计与施工

The Design and Construction of Through Tied Arch Bridge Without Wind Bracing

下承式系杆拱桥具有造型美观、受力合理、施工方便等优点。在桥宽较大、跨径较小的情况下,采用无风撑系杆拱桥,更能突出其美观性,但同时也使结构纵横向受力、稳定性等方面的分析成为十分突出的问题。文章分析了90 m跨度无风撑系杆拱桥的受力特点与设计要点,提出了静力分析和稳定性分析的结论,并阐述了施工顺序和注意事项,旨在为同类桥梁的设计与施工提供借鉴和参考。

Through tied arch bridge has the advantages of beautiful shape,reasonable stress and convenient construction.In the case of large bridge width and small span,the use of tied arch bridge without wind bracing can highlight its aesthetics,but at the same time,it also makes the analysis of vertical and horizontal force and stability of the structure a very prominent problem.This paper analyzes the stress characteristics and key design points of 90 m span tied arch bridge without wind bracing,puts forward the conclusion of static analysis and stability analysis,and expounds the construction sequence and precautions,in order to provide reference for the design and construction of similar bridges.