张家界市鹭鸶湾大桥设计关键技术研究  

Key Techniques of Zhangjiajie Crane Bay Bridge Design

作　　者：王思伟 

机构地区：[1]湖南中大设计院有限公司,长沙410075

出　　处：《交通科技》2016年第4期22-25,共4页Transportation Science & Technology

摘　　要：为改善Y形墩刚构桥的墩身内力,以张家界市鹭鸶湾大桥(主跨81m的7跨Y形刚构-连续组合箱梁桥)为研究对象,采用MidasCivil有限元分析程序计算,通过分析墩身内力成因,在合龙前施加水平顶力来主动调整墩身结构内力。研究表明,墩身两侧弯矩相等状态下的水平顶力为理想顶力,合龙前施加合理水平顶力能有效地调整墩身结构内力。To improve the internal force of the pier of Y-type pier rigid frame bridge,taking Zhangjiajie Crane Bay Bridge(7spans Y-type rigid-frame continuous composite box girder bridge with main span 81m)as the research object,using finite element analysis program Midas Civil,through the analysis of internal forces causes,the horizontal jacking force is applied before joining to adjust the pier structure internal force.Studies show that the horizontal jacking force is ideal in the case of the equal bending moment on both sides of the shafts,and before the final closure a reasonable level of jacking force can effectively adjust the pier structure internal force.

关 键 词：Y形墩刚构桥 矮墩刚构桥 顶推力 合龙 

分 类 号：U445.551[建筑科学—桥梁与隧道工程]