摘要
以在建的容桂水道特大桥工程为背景,从预应力损失、结构刚度、梁段超重、混凝土的收缩徐变等因素对跨中持续下挠的影响进行了探讨,分析了以上主要参数对大跨PC梁桥跨中挠度的影响,并在分析的基础上提出防治措施。
The author takes the Ronggui Shuidao bridge as an example, from the loss of the prestressed, construction stiffness, the outweigh of the box beam, the shrinkage and creep and so on to research the impactof them on the span centre deflection, by analyzing the impact of the main reasons, put out some preventive measuees to reduce the impact.
出处
《山西建筑》
2008年第9期1-3,共3页
Shanxi Architecture
基金
江西省交通厅科技项目
关键词
连续刚构桥
跨中挠度
收缩徐变
预应力混凝土
continuous rigid frame bridges, the span centre deflection, shrinkage and creep, prestressed concrete
