摘要
在采用顶推法施工的曲线连续梁桥的主梁内预埋的钢筋计测得的混凝土应力远大于理论经计算结果,这主要是由混凝土收缩徐变变形中的非弹性变形包含在钢筋计中引起的。本文提出了用于扣除混凝土实测应力中收缩徐变非弹性变形影响的两种计算方法,并且将徐变对实测应力影响计算进行了特殊考虑,在一座大桥进行施工监控中使用取得了较好的效果。
As the non -elasticity of slow concrete contraction distortion is shown by reinforcement meter, the concrete stress measured by reinforcement meter pre -buried inside main girder in construction of curved continuous bridge by jack-in method. This paper presents two calculation methods with deductiong influence by slow contraction distortion and special treating the influence on calculation of measured stress by slow distortion. The methods were applied in monitoring construction of one bredge and got good results.
出处
《铁道工程学报》
EI
北大核心
2005年第2期23-26,共4页
Journal of Railway Engineering Society
