东南大学学报（自然科学版）2017，Vol.47Issue(1)：107-111,5.DOI:10.3969/j.issn.1001-0505.2017.01.019
考虑滑移效应的体外预应力钢混凝土组合梁自振频率分析
Analysis on natural frequencies of steel-concrete composite beam with external prestressed tendons considering slip effects
摘要
Abstract
To study the influence of the slip and the external prestressed tendons on the natural fre-quencies of the simply-supported steel-concrete composite beam,the static reduced stiffness method (SRSM)and the dynamic stiffness modified coefficient method(DSMCM)were proposed.Taking a simply-supported steel-concrete composite experimental beam with the span of 5 m as a research object,the natural frequencies of the beam were calculated by the proposed SRSM,the DSMCM and the transformed section method(TSM),respectively.The calculation results were compared with the dynamic test results.The results show that the natural frequencies of the steel-concrete composite beam with the external prestressed tendons calculated by the proposed DSMCM are closer to the dy-namic test results,while those predicted by the SRSM and the TSM exhibit big errors.When the ex-ternal prestressing is 100 kN,the errors of the TSM and the SRSM are 19.3% and 7.9%,respec-tively,while that of the DSMCM is only 2.9%.关键词
体外预应力/钢/混凝土组合梁/滑移/自振频率/动力刚度修正系数法Key words
external prestressed tendon/steel-concrete composite beam/slip/natural frequency/dy-namic stiffness modified coefficient method分类
建筑与水利引用本文复制引用
项贻强,邱政,Bishnu Gupt Gautam..考虑滑移效应的体外预应力钢混凝土组合梁自振频率分析[J].东南大学学报（自然科学版）,2017,47(1):107-111,5.基金项目
国家自然科学基金资助项目（51541810）、浙江大学唐仲英基金会资助项目． （）
