桥梁线形控制中徐变变形的一种计算方法  

One Calculation Method of Creep Deformation in Bridge Linear Controlling

作　　者：陈五四[1] 张宝利 郭瑞东[1] 曾德荣[1] 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074 [2]中铁十九局集团第四工程有限公司,内蒙古通辽028000

出　　处：《重庆交通大学学报（自然科学版）》2008年第5期675-678,共4页Journal of Chongqing Jiaotong University(Natural Science)

摘　　要：对于大跨径混凝土连续刚构桥的施工监控,线形的控制主要集中在预拱度的设置上,而预设拱度又与桥梁结构的变形计算紧密相连。其中,混凝土徐变变形是很难计算准确的,因而从理论上建立了一个计算这种徐变变形的理论计算公式,其计算结果与其它方法的计算结果基本一致,优点是计算简单准确。Monitoring the long-span continuous rigid bridge construction,linear controlling mainly concentrates on the pre- camber settings. And pre-arch is closely linked with the cach of bridge structure deformation. The concrete creep deformation is difficult to calculate accurately, therefore, a theoretical formula is established theoretically to calculate this kind of creep deformation. Its calculating results are basically consistent with those got by other methods, but its simple calculation and high precision are advantageous.

关 键 词：混凝土徐变 线形控制 预拱度 施工控制 

分 类 号：U446[建筑科学—桥梁与隧道工程]