土木工程与管理学报2017，Vol.34Issue(4)：7-13,7.
乌江特大桥索塔锚固区节段足尺模型试验参数的确定
Determination of Test Parameters of Full-scale Model Test of Pylon Anchorage Zone Segment for Wujiang River Bridge
摘要
Abstract
Relying on the Wujiang River Bridge of the highway between Zunyi and Guiyang, the cable tower anchorage zone of cable-stayed bridge were analyzed.Considering the design of cable force, cable angle and the overall stress superposition effects, the anchorage zone segment section was determined by the most adverse principle.The anchorage zone segment was respectively extended upward and downward for a certain distance to ensure that the structural stress is less affected by the simulated boundary conditions.At the same time,the anchorage zone segment with different heights was applied by the same loads of prestressing force, cable force and gravity as the real bridge model.The finite element calculation results were compared with the calculation model of the real bridge to find the same cracking ability as the real bridge section height.The finite element model of bridge upper pylon anchorage zone used in the overall analysis was firstly introduced.The working performance of the overall model under the design cable force was simulated by the ANSYS finite element software.Based on the analysis of calculation results, the most disadvantaged segment with the maximum stress under the design cable force was confirmed and the height of the most disadvantaged segment needed by the full-scale model test of anchorage zone was proposed.关键词
斜拉桥/锚固区/有限元分析/最不利节段Key words
cable-stayed bridge/anchorage zone/finite element analysis/most disadvantaged segment分类
交通工程引用本文复制引用
吴巧云,代健州,魏敏,潘伟杰..乌江特大桥索塔锚固区节段足尺模型试验参数的确定[J].土木工程与管理学报,2017,34(4):7-13,7.基金项目
国家自然科学基金(51408443) （51408443）
贵州省交通厅科技项目(2015-122-051) （2015-122-051）
武汉工程大学研究生教育创新基金项目(CX2015044) （CX2015044）
