摘要
以某特大预应力混凝土梁桥为工程背景,着重从混凝土的收缩徐变、预应力损失、结构刚度等方面分析了各参数对挠度的影响,最后提出了控制结构长期下挠的相关防治措施,从而为同类型研究积累经验。
The author takes one large prestressed concrete girder bridge as an example,focus on concrete shrinkage and creep,prestress loss,structural stiffness and so on to research the impact of them on the span centre deflection.Finally,put forward the measures for control structure of the long-term deflection,thus accumulating experiences for similar type of research.
出处
《山西建筑》
2010年第2期316-318,共3页
Shanxi Architecture
关键词
大跨径
预应力混凝土梁桥
下挠
影响因素
long-span
prestressed concrete girder bridge
deflection
influencing factors
