Design&Research on Large-Span Irregular Curve Continuous Rigid Frame Bridge
Taking GuizhouGuiyuWenquan Bridge as an example,it introduces the overall design of(80+145+80)m large-span irregular curve continuous rigid frame bridge based on the characteristics of the irregular curve of the continuous rigid frame bridge.It proposes a design method to control the balance weight by adjusting the thickness of the web plate and bottom plate,and carries out reasonable construction and reinforcement design.Establish a 3D model for static,buckling stability,and dynamic characteristic analysis.Research has shown that the bending torsion coupling effect of bridges is relatively small,and both deformation and stress are within a reasonable range.The buckling stability is good,but the stability of the widened section is slightly worse than that of the equal width section.The power characteristics are mainly longitudinal drift and lateral bending.The bridge design is reasonable and meets the regulatory requirements,which can provide reference for similar bridge designs.
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