计算力学学报2024，Vol.41Issue(6)：1020-1028,9.DOI:10.7511/jslx20230503001
基于模型试验的双缆多塔悬索桥力学特性研究
Study on mechanical properties of double-cable multi-tower suspension bridge based on model test
摘要
Abstract
In order to verify the mechanical characteristics of a double-cable multi-tower suspension bridge,based on the theoretical formula and numerical analysis,the double-cable multi-tower suspension bridge model is tested.According to the design Parameters.The traditional system and double-cable system finite element model are respectively established,two kinds of architecture deformation and bridge-tower stress are analyzed.The model test verifies the accuracy and dynamic characteristics of the double-cable system.The study shows that the theoretical results of the double-cable system test model agree well with the measured and simulation results.It also shows that the overall accuracy of the test model is good,which confirms the accuracy of the theoretical formula.The measured and finite element simulation results indicate that the first mode of the system is the first vertical bending mode of the stiffening girder,and the error between the measured and simulated results of the first natural frequency is 6.97％.In the traditional system,the deflections of the tower and loading span stiffening girder are about 3 times and the non-loading span stiffening girder about 4 times that of the double-cable system.In the traditional system,the bottom stress of the tower is about 3 times that of the double-cable system,which shows that the double-cable system can effectively reduce the displacement,the stiffening girder deflection and the bottom stress of the middle-tower.关键词
桥梁工程/力学特性/模型试验/多塔悬索桥/双缆/振型模态Key words
bridge engineering/mechanical properties/model test/multi-tower suspension bridge/double-cable/mode of vibration分类
交通工程引用本文复制引用
柴生波,王克文,王秀兰,吴骞..基于模型试验的双缆多塔悬索桥力学特性研究[J].计算力学学报,2024,41(6):1020-1028,9.基金项目
国家自然科学基金(51808448,51608440)资助项目. （51808448,51608440）
