科技资讯
科技資訊
과기자신
SCIENCE & TECHNOLOGY INFORMATION
2015年
9期
56-57,59
,共3页
钢结构%装配式%防爆墙%自由振动%固有频率%振型
鋼結構%裝配式%防爆牆%自由振動%固有頻率%振型
강결구%장배식%방폭장%자유진동%고유빈솔%진형
steel structure%assembling%blast wall%free vibration%natural frequency%vibration mode
利用空间网格结构分析软件MST2006对4个钢结构装配式防爆墙模型进行静力分析,并按照满应力原则对模型进行截面设计。这4个模型包括1个柱—支撑结构模型,1个平面桁架结构模型,2个平面桁架系网架结构模型。采用通用有限元软件ANSYS对所有模型进行自由振动分析,得到各模型的一阶振型和固有频率。比较各模型的一阶振型可知,平面桁架系网架结构的一阶振型为平动,振动方向与爆炸荷载作用方向一致,动力特性较好,是一种较优的防爆墙结构形式。
利用空間網格結構分析軟件MST2006對4箇鋼結構裝配式防爆牆模型進行靜力分析,併按照滿應力原則對模型進行截麵設計。這4箇模型包括1箇柱—支撐結構模型,1箇平麵桁架結構模型,2箇平麵桁架繫網架結構模型。採用通用有限元軟件ANSYS對所有模型進行自由振動分析,得到各模型的一階振型和固有頻率。比較各模型的一階振型可知,平麵桁架繫網架結構的一階振型為平動,振動方嚮與爆炸荷載作用方嚮一緻,動力特性較好,是一種較優的防爆牆結構形式。
이용공간망격결구분석연건MST2006대4개강결구장배식방폭장모형진행정력분석,병안조만응력원칙대모형진행절면설계。저4개모형포괄1개주—지탱결구모형,1개평면항가결구모형,2개평면항가계망가결구모형。채용통용유한원연건ANSYS대소유모형진행자유진동분석,득도각모형적일계진형화고유빈솔。비교각모형적일계진형가지,평면항가계망가결구적일계진형위평동,진동방향여폭작하재작용방향일치,동력특성교호,시일충교우적방폭장결구형식。
Static analysis of four steel structure assembling blast wall models were carried out by using MST2006. Section design of these models were made in accordance with the?full stress?principle.The four models include one column-brace structure model, one plane truss structure model and two plane truss grid models. Free vibration analysis of the four models were made by ANSYS and the first order vibration modes and natural frequencies of models were acquired. By comparsion of the first order vibration modes of every models, vibration mode shape of plane truss grid structure is translational. The vibration direction?is consistent with the direction of the explosion load. It suggests that plane truss grid structure have good dynamic characteristics and this structure is a better structure for blast wall.