Contact surface stress analysis and optimization in rotating superstructures [桥梁转体施工接触面应力分析及优化方法]

作者：Huang S.; Tang Y.; Yuan Z.; Huang Y.^*; Hu J.

来源：Harbin Gongcheng Daxue Xuebao/journal of Harbin Engineering University, 2020, 41(12): 1790-1796.

DOI：10.11990/jheu.202004053

• Bridge construction
• Bridge engineering
• Contact mechanics
• Contact stress
• Finite element method
• Interface design
• Optimization design
• Rotating superstructure construction

To solve the problem of large contact body under high pressure in rotating superstructure construction of bridges, on the basis of the theory of contact mechanics, the stress of polytetrafluoroethylene slide plates during contact is considered for the first time in this study and a simplified contact mechanics model is proposed. The computational efficiency of the simplified contact mechanics model in the finite element analysis is nearly ten times higher than that before the contact mechanics model is simplified. At the same time, an iterative optimization method is proposed on the basis of the current design of the slide plates. Taking the Mao-Zhan Railway Bridge as an example, the slide plate distribution is optimized. Results show that under the condition that the contact stress meets the requirements, 22% of the slide plates can be saved. The method proposed in this study can provide an effective and feasible approach for the design and analysis of the contact interface in rotating superstructure constructions.

• 单位
  华南理工大学; 清华大学; 摩擦学国家重点实验室