由于混凝土的收缩徐变效应,对于不同龄期的混凝土,收缩徐变效应存在差异。在桥梁拼接的整体板桥,这种差异效应使原空心板对新实心板的形成约束,进而会导致拼接后整体空心板内部产生附加次内力。为了更好的了解空心板内部附加内力的大小、分布及对新旧板各自的影响,应对收缩、徐变附加作用进行分析。 Due to the shrinkage and creep effect of concrete, the shrinkage and creep effects are different for concrete of different ages. The integral slab bridge in the bridge splicing, the difference effect of the original hollow slab of the formation of new solid board constraints, which will result in the splicing of the overall hollow slab produce additional internal force. In order to better understand the size of the internal force of the hollow plate internal distribution, distribution and the impact of each new and old plates, shrinkage, creep should be additional role analysis.