大跨径连续刚构桥预应力摩阻损失研究  

Research on the Prestress Loss of Frictional Resistance in Large Span Prestressed Concrete Continuous Rigid Frame Bridge

作　　者：张开银[1] 杨立专[1] 惠国旺[1] 

机构地区：[1]武汉理工大学交通学院,武汉430063

出　　处：《交通科技》2008年第1期4-6,共3页Transportation Science & Technology

摘　　要：通过大跨径预应力混凝土连续刚构梁桥施工过程中结构的应力测试,分析其预应力损失的原因,研究混凝土箱梁中的预应力变化规律;并根据现场实测数据,估计出长索对预应力损失影响较大的管道偏差系数k。This paper in combine with the engineering example analyzed the cause of stress loss through the construction monitoring test, searched the change rule in large span prestressed concrete continues rigid frame bridge, and based on the test data, the of conduit deviation factor, which is sig- nificant influence factor for prestress loss, is reckoned. The research may offer a reference for design and construction of similar structure.

关 键 词：连续刚构桥 预应力损失 管道偏差系数 

分 类 号：U448.14[建筑科学—桥梁与隧道工程] TU757[交通运输工程—道路与铁道工程]