空间索面自锚式悬索桥主索鞍计算方法_贾界峰.pdfVIP

38 2007 5 : 1003- 4722( 2007) 05- 0038- 04 1 1 1 2 贾界峰 , 涂金平 , 周泳涛, 李健刚 ( 1. 中交桥梁技术有限公司, 北京100102; 2. 北京市政工程设计研究总院, 北京100045) : 空间索面悬索桥主索鞍的承缆槽立面及平面线形应与全 恒载条件下的主缆线形相 吻合, 既有平曲线又有竖曲线使得整体式肋传力结构的索鞍处于复杂的三向空间受力状态, 运用有 限元程序对天津富民桥主索鞍进行有限元分析复核计算, 提出一些索鞍计算的方法 : 自锚式悬索桥; 主索鞍; 空间索面; 有限元法 : U448. 25; U443. 38 : A Calculation Methods for Main Cable Saddles of Spatial Cable Plane Self-Anchored Suspension Bridge 1 1 1 2 JIA J ie-f eng , TUJ in-p ing , ZHOU Yong-tao , LI J ia n-gang ( 1. Bridge T echniques C ., Ltd., China C mmunicati n C nstructi n Gr up, Beijing 100102, China; 2. Beijing Municipal Engineering Design Research Institute, Beijing 100045, China) Abstract: T he ge metric shapes f elevati n and plan f the cable tr ughs in main cable sad- dles f the spatial cable plane self-anch red suspensi n bridge sh uld acc rd w ith th se f the main cables f the bridge under the acti n f w h le l ad cases, and sh uld have b th the plan curve and vertical curve t keep the integral cable saddle structure w ith its ribs transferring f rces in a state f c mplicated spatial f rce bearing c nditi ns. In this paper, the finite element package is used t carry ut a check calculati n f the main cable saddles f Fumin Bridge in T ianjin and s me f the meth ds f r calculati n f the cable saddles ar e pr vided as w ell. Key words: self- anch r ed suspensi n bridge; main cable saddle; spatial cable plane; finite el- ement meth d 1 , 141 m , 70 m , [ 3] ( 1) ,