Taking the caiyuanba changjiang river bridge in chongqing as an example , this paper makes a study of the effect of tilting angle of basket handle arch rib on the stability of the overall arch bridge and gives the rational tilting angle of the arch rib , using the finite element method 摘要以重庆菜园坝长江大桥为例,利用有限元方法研究提篮拱的拱肋侧倾角对全桥稳定性的影响,给出拱肋的合理侧倾角。
The software ansys6 . 0 is used to analysis the stability of the state after construction of tongwamen bridge , linear method is used in analyzing the finite element model of the bridge , the coeffient of stability of different state after construction is given . on the basis , the effect of different factors such as the arrangement of lateral brace , the sloping angle of arch ribs , the stiffness of bridge deck system , the effect of non - orientedly conservative loadings of the hanger and tie bar etc is discussed . the different coefficients of stability of changing these factors are given , so the factors that are vital to the lateral stability of x - type arches are found , and the rationality of the methods taken to enhance the lateral stability of tongwamen bridge is evaluated 本文应用有限元分析商业软件ansys6 . 0 ,采用线弹性方法,通过对该桥的空间有限元模型进行稳定性分析,得出其成桥运营阶段各种工况下的稳定安全系数。在此基础上,本文还通过有限元模型分析,就拱的矢跨比、吊杆(立柱)的非保向力效应、桥面系的刚度、横撑布置形式、拱肋侧倾角等因素对该桥整体稳定性的影响展开探讨与研究。文中给出了各因素变化情况下的稳定安全系数,指出了对钢管混凝土提篮拱横向稳定性有显著影响的因素及其合理变化范围,并对铜瓦门大桥提高横向稳定性的措施的经济合理性进行了分析。
侧: slant; sloping倾角: dip; dip angle; incidence; p ...顶侧倾角: topside rake舵侧倾角: rudder setting angle网板侧倾角: otter board angle of heel侧倾角;坡度;倾斜角: bank angle汽车侧倾角速度或侧倾频率: roll rate侧倾: bank; caamber; heave down; heel; lateriversion; lateroversion; list; set back; sidedump; side-tipping; sidelurch; skew; sway倾角: [物理学] dip; [地] dip angle; [数学] incidence; pitch; inclination; [船舶工程] rake; angle of tilt◇倾角测量仪 dipmeter; 倾角测斜仪 depression position finder; 倾角计 inclinometer侧倾车: side tipping wagon; side-ti ing wagon; side-tipping wagon使侧倾: to list磁倾角,倾角: angle of dip侧倾车体: tilting type car body侧倾碟瓣: tilt disc prosthesis侧倾刚度: roll stiffness侧倾加速度: roll acceleration侧倾力矩: moment resulting from sidesway侧倾抛石驳: side-dump scow侧倾式铲斗: side tip bucket; side tipping bucket; side-tipping bucket侧倾速度: roll velocity侧倾误差: heeling error侧倾下水船: tipping launch侧倾卸车: side dumtruck侧倾卸车身: side dump body侧倾中心: center of parallel wheel motion; roll center