连续梁桥徐变控制方法研究  

The Research of Creep Control Methods of the Continuous Girder Bridge Creep

作　　者：李永成[1] 刘世忠[1] 

机构地区：[1]兰州交通大学土木工程学院,甘肃兰州730070

出　　处：《兰州工业学院学报》2013年第6期47-49,53,共4页Journal of Lanzhou Institute of Technology

摘　　要：以郑州市淮河路跨南水北调连续梁为背景,分别研究张拉体内备用钢束、延长桥面铺装时间、延长混凝土材料龄期3种方法对徐变控制的有效性,得出延长桥面铺装是比较好的控制连续梁后期徐变的方法,此法为大跨预应力连续梁徐变控制提供了参考.Taking the continuous bridge of the South-to-North Water Diversion Project on Huaihe road in Zheng- zhou, as example, three controlling methods are analyzed and compared between stretching the spare steel beam, extending the time for paring the bridge and prolonging the concrete material age. The result shows that extending the time to pace the bridge is more effective, which provides reference for the creep control of large span restressed continaous bridge

关 键 词：混凝土连续梁 徐变控制 有限元模型 材料龄期 

分 类 号：TU745.2[建筑科学—建筑技术科学]