精选优质文档-倾情为你奉上影响预应力预制梁（板）上拱值的因素分析摘要：预制梁（板）预应力筋张拉后发生向上的上拱变形，上拱值直接反映了张拉力效应，是预应力张拉施工中的一个重要的力学指标。本文针对目前高速公路建设中梁（板）实际上拱值比理论上拱值偏低的现象，对影响梁（板）上拱值的多种因素进行分析和讨论。关键词：预应力构件；预制梁板；上拱值；先简支后连续桥梁。Analysis on Factors Effecting Upward Deflection Values of Prestressed Precast Beams(Slabs)Liu DekunAbstract: The upward deflection occurs after the prestressed reinforcing bars of precast beams (or slabs) are tensioned, the value of which represents the effect of tensions directly and is an important
