结构工程师
結構工程師
결구공정사
STRUCTURAL ENGINEERS
2014年
5期
76-80
,共5页
斜拉空间桁架结构%静力荷载%有限元分析%临界预应变%内力系数
斜拉空間桁架結構%靜力荷載%有限元分析%臨界預應變%內力繫數
사랍공간항가결구%정력하재%유한원분석%림계예응변%내력계수
cable-stayed spatial truss%static load%finite element analysis%critical prestrain%inner force coef-ficient
利用有限元分析软件ANSYS计算了某斜拉空间桁架在静力作用下的内力及自由端位移，归纳了内力系数与节间位置、预应力、斜拉索高度之间的函数关系；详细分析了斜拉索施加的初始预应力和斜拉索高度对该结构内力及自由端位移的影响，提出了斜拉空间桁架的临界预应变概念，回归出了自由端位移与初始预应变以及斜拉索高度的函数关系。本文的研究成果能够为斜拉空间结构的受力性能研究和工程实践提供指导。
利用有限元分析軟件ANSYS計算瞭某斜拉空間桁架在靜力作用下的內力及自由耑位移，歸納瞭內力繫數與節間位置、預應力、斜拉索高度之間的函數關繫；詳細分析瞭斜拉索施加的初始預應力和斜拉索高度對該結構內力及自由耑位移的影響，提齣瞭斜拉空間桁架的臨界預應變概唸，迴歸齣瞭自由耑位移與初始預應變以及斜拉索高度的函數關繫。本文的研究成果能夠為斜拉空間結構的受力性能研究和工程實踐提供指導。
이용유한원분석연건ANSYS계산료모사랍공간항가재정력작용하적내력급자유단위이，귀납료내력계수여절간위치、예응력、사랍색고도지간적함수관계；상세분석료사랍색시가적초시예응력화사랍색고도대해결구내력급자유단위이적영향，제출료사랍공간항가적림계예응변개념，회귀출료자유단위이여초시예응변이급사랍색고도적함수관계。본문적연구성과능구위사랍공간결구적수력성능연구화공정실천제공지도。
Internal force and displacement of the free end under the static state of a cable-stayed space truss was calculated by using the finite element analysis software ANSYS .The relations between the internal force coefficient and the inter-node position , height , prestressed cable were summarized .The influence of cable prestress and the cable height on the internal force and displacement at the free end of the structure was ana -lyzed in detail .The concept of critical pre strain in cable-stayed space truss was raised .The relations between the free end displacement , the initial pre strain , and the cable height were derived .
