单箱多室波形钢腹板组合箱梁动力特性研究  

Research on the Dynamic Characteristics of Multi-room Single Box Composite Girder with Corrugated Steel Webs

作　　者：郑尚敏 万水[2] 程海根[1] 

机构地区：[1]华东交通大学,南昌330013 [2]东南大学,南京210096

出　　处：《铁道工程学报》2017年第9期41-46,共6页Journal of Railway Engineering Society

基　　金：国家自然科学基金项目(50078014);交通运输部科研项目(2011-318-775-680)

摘　　要：研究目的:为分析单箱多室波形钢腹板组合箱梁的动力性能与混凝土箱梁的差异,本文设计并制作两片跨径为5.2 m的试验梁,利用有限元软件ANSYS建立其三维实体模型,通过模态试验与有限元分析相结合的方法对试验梁进行研究,并就横隔板的设置对单箱多室波形钢腹板组合箱梁与混凝土箱梁扭转振动频率的影响进行分析。研究结论:(1)模态试验的结果与有限元分析结果基本吻合,说明实测结果是正确的,同时也验证了有限元模拟方法是合理的;(2)单箱多室波形钢腹板组合箱梁的基频略大于相应规模的混凝土箱梁,而高阶竖向弯曲振动频率均小于混凝土箱梁;(3)单箱多室波形钢腹板组合箱梁扭转振动频率对梁间设置横隔板的影响与混凝土箱梁相比较敏感;(4)横隔板的位置对单箱多室波形钢腹板组合箱梁扭转振动频率的影响较大;(5)该研究成果对单箱多室波形钢腹板组合箱梁的动力学分析具有一定的参考价值。Research purposes： In order to study the difference of dynamic characteristics between composite DOX garaer with corrugated steel webs and concrete box girder, two test girders are designed which span is 5.2 m, and the three dimension finite element （FE） models of two test girders are built with ANSYS FE software, the model experiment and finite element analysis （FEA） are combined to study the two test girders, moreover, the effects of diaphragm setting on torsional vibration frequencies between multi -room single box composite girder with corrugated steel webs and concrete box girder, is analyzed. Research conclusions：（ 1 ）The datum between test measured and FEA analysis show that there is little difference,（5） The research results provide some references for dynamics analysis in multi -room single box composite girder with corrugated steel webs.

关 键 词：波形钢腹板 动力特性 振动频率 单箱多室 有限元 

分 类 号：U448.38[建筑科学—桥梁与隧道工程]