山西建筑
山西建築
산서건축
SHANXI ARCHITECTURE
2011年
25期
153-154
,共2页
下承式系杆拱桥%客运专线%动力学特性%有限元
下承式繫桿拱橋%客運專線%動力學特性%有限元
하승식계간공교%객운전선%동역학특성%유한원
the tied-arch bridge%passenger railway express line%dynamical characteristic%finite element
采用ANSYS计算程序建立了客运专线下承式系杆拱桥三维有限元精细模型,首先进行了静力学分析,在此基础上分析了该下承式系杆拱桥的动力学特性和结构屈曲,掌握了结构屈曲特征值及屈曲模态,从模态分析结果可以看出,系杆拱桥的侧向刚度要弱于竖向刚度,该桥的侧向稳定性比较突出。
採用ANSYS計算程序建立瞭客運專線下承式繫桿拱橋三維有限元精細模型,首先進行瞭靜力學分析,在此基礎上分析瞭該下承式繫桿拱橋的動力學特性和結構屈麯,掌握瞭結構屈麯特徵值及屈麯模態,從模態分析結果可以看齣,繫桿拱橋的側嚮剛度要弱于豎嚮剛度,該橋的側嚮穩定性比較突齣。
채용ANSYS계산정서건립료객운전선하승식계간공교삼유유한원정세모형,수선진행료정역학분석,재차기출상분석료해하승식계간공교적동역학특성화결구굴곡,장악료결구굴곡특정치급굴곡모태,종모태분석결과가이간출,계간공교적측향강도요약우수향강도,해교적측향은정성비교돌출。
The refined three dimensional model for the tied-arch bridge in passenger railway express line is developed using ANSYS.The dynamical characteristic analysis and the buckling analysis are performed after the static analysis,master the structure buckling characteristic value and buckling modes.The analysis result shows that the lateral stiffness of the tied-arch bridge is weaker than the vertical stiffness,the lateral stability of the bridge is more critical than the vertical stability.
