高青至商河公路130m钢桁架桥结构设计

Structural Design of 130 m Steel Truss Bridge on Gaoqing to Shanghe Highway

钢桁架桥作为一种重要的桥梁结构形式,在大跨度桥梁的建设中扮演着举足轻重的角色。其设计涉及到复杂的结构分析、节点设计和材料选择。以高青至商河公路130 m钢桁架桥工程为例,结合该工程实际情况,设计一个钢桁架桥结构方案。在设计阶段,采用有限元分析软件对桥梁的杆件编号、荷载取值及材料参数进行了精确设定,并建立了有限元分析模型。在总体设计阶段,综合考虑了桥位选址及横断面设计,确保桥梁结构的合理性。上部结构设计主要包括主桁杆件、横梁、纵梁等关键部件的设计,以满足桥梁的承载要求。下部结构设计则注重基础的稳定性和耐久性。通过这一系列设计过程,确保了钢桁架桥的安全性和稳定性。经静载试验验证,钢桁架桥应力、挠度、屈曲稳定系数均满足规范要求。

As an important form of bridge structure,steel truss bridges play a crucial role in the construction of long-span bridges.Its design involves complex structural analysis,node design,and material selection.Taking the 130 m steel truss bridge project from Gaoqing to Shanghe Highway as an example,combined with the actual situation of the project,design a steel truss bridge structure scheme.In the design phase,finite element analysis software was used to accurately set the member numbers,load values,and material parameters of the bridge,and a finite element analysis model was established.In the overall design stage,comprehensive consideration was given to the site selection and cross-sectional design of the bridge to ensure the rationality of the bridge structure.The design of the upper structure mainly includes the design of key components such as the main truss members,crossbeams,and longitudinal beams to meet the bearing requirements of the bridge.The design of the substructure focuses on the stability and durability of the foundation.Through this series of design processes,the safety and stability of the steel truss bridge have been ensured.Through static load experiments,it has been verified that the stress,deflection,and buckling stability coefficient of the steel truss bridge meet the requirements of the specifications.