Simulation Analysis of the Stress Performance of Key Nodes in Large-Span Low Tower Cable-Stayed Bridges
The Ningbo Zhongxing Bridge spans the Yongjiang River.Due to the height limit requirements of airport aviation,the main bridge adopts a design scheme of a large-span low tower cable-stayed bridge with a main span of 400 m.The main bridge adopts a V-shaped steel main tower,with the tower beams consolidated and supported on the main pier by large spherical steel bearings.After analysis,the anchorage zone of the cable tower and the consolidation point of the tower beam are the two key nodes in the design of the main bridge.The node construction design is complex and requires the use of 3D spatial finite element method to simulate and analyze its stress performance.Establish a 3D finite element simulation model of key nodes using ANSYS software,and compare it with the overall model results of MIDAS to verify the effectiveness of the simulation model.By using simulation models,the calculation results of spatial stress distribution at key nodes under adverse load conditions are obtained,providing reliable basis for the construction and design of key nodes.
large-span low tower cable-stayed bridgecable anchorage zoneat the consolidation point of pier&beam3D simulation analysisstress distribution
NETL
NSTL
万方数据
