湖南理工学院学报(自然科学版)
湖南理工學院學報(自然科學版)
호남리공학원학보(자연과학판)
Journal of Hunan Institute of Science and Technology (Natural Sciences)
2015年
3期
73-75,84
,共4页
空钢管拱桥%动力特性%有限元法
空鋼管拱橋%動力特性%有限元法
공강관공교%동력특성%유한원법
hollow steel-tube arch bridge%dynamic characteristics%finite element method
以漳平粉煤灰综合利用项目跨河桥梁工程为背景,采用有限元软件ANSYS建立小宽跨比下承式空钢管桁肋系杆拱桥三维有限元模型。通过子空间迭代法求得该桥的前十阶自振频率及振型,并进行拱桥动力特性分析。发现该桥振型复杂多样,包括六种不同的形式,总体来说该桥整体面外刚度偏弱,可以为同类拱桥的结构布置及设计提供参考。
以漳平粉煤灰綜閤利用項目跨河橋樑工程為揹景,採用有限元軟件ANSYS建立小寬跨比下承式空鋼管桁肋繫桿拱橋三維有限元模型。通過子空間迭代法求得該橋的前十階自振頻率及振型,併進行拱橋動力特性分析。髮現該橋振型複雜多樣,包括六種不同的形式,總體來說該橋整體麵外剛度偏弱,可以為同類拱橋的結構佈置及設計提供參攷。
이장평분매회종합이용항목과하교량공정위배경,채용유한원연건ANSYS건립소관과비하승식공강관항륵계간공교삼유유한원모형。통과자공간질대법구득해교적전십계자진빈솔급진형,병진행공교동력특성분석。발현해교진형복잡다양,포괄륙충불동적형식,총체래설해교정체면외강도편약,가이위동류공교적결구포치급설계제공삼고。
On the basis of model of Zhangping crossing bridge of comprehensive utilization of fly ash, the 3-D finite element model is constructed with the universal FEM software ANSYS. The first ten natural frequencies and mode shapes were obtained by subspace iteration method, the dynamic characteristics of arch bridge was analyzed. The results showed that the shapes of the bridge is complex and varied, including six different forms, in general, the whole outer surface of the bridge weak stiffness, which can provide a reference for similar arch bridge’s structural arrangement and design.