计算力学学报Issue(2)：174-179,6.DOI:10.7511/jslx201502006
大跨度悬索桥索股抗弯刚度对锚跨张力测试精度的影响研究
Analysis of cable bending stiffness effect on test accuracy of anchor span tension for long-span suspension bridge
摘要
Abstract
In order to study the strands of main cables bending stiffness effect on the test accuracy of an‐chor span tension for long‐span suspension bridge ,relative expression between the natural frequency and the anchor span tension of the anchor span tension with considering the bending stiffness or not were de‐duced based on the energy method w hen the tw o ends are hinged ,considering the boundary conditions of the anchor span tension is complex ,the expression was also deduced based on the dynamic balance meth‐od w hen one end of the anchor span tension is hinged ,another is elastic support .T he accuracy and effec‐tiveness had been verified with some classic examples ,the conclusions indicate that the strands of main cables bending stiffness have a great effect on the test accuracy of anchor span tension .T he study of the application of engineering shows that the strands of main cables bending stiffness influence on the test precision is mainly decided by the ratio of stress stiffness produced by tension to bending stiffness .The uncertainty of the anchor span boundary conditions also has considerable impacts on the precision of con‐trol ,during the process of construction tension control .It can effectively solve the problem and can great‐ly improve the anchor span tension control precision with the proposed least square method .关键词
桥梁工程/能量法/自振频率/抗弯刚度/索股张力/最小二乘法Key words
bridge engineering/energy method/natural frequency/bending stiffness/cable tension/least square method分类
交通工程引用本文复制引用
王达,杨琴,刘扬..大跨度悬索桥索股抗弯刚度对锚跨张力测试精度的影响研究[J].计算力学学报,2015,(2):174-179,6.基金项目
国家重点基础研究发展计划（973）（2015CB057701）；国家自然科学基金（51308071，51378081）；湖南省自然科学基金（13JJ4057）；湖南省高校创新平台开放基金（12KB76）；长沙理工大学桥梁工程安全控制省部共建教育部重点实验室开放基金资助项目． （）
