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对于变形控制要求极高的预应力梁,在设计中较难把握的是对混凝土收缩和徐变产生的梁变形和预应力损失的控制。本文目的在于借助成熟的有限元分析软件,通过对大跨度预应力钢筋混凝土梁进行仿真分析,及时地为工程设计和现场实体试验提供经济、准确的依据和指导。
For prestressed beams requiring extremely high deformation control, it is difficult to grasp in design the control of beam deformation and prestress loss caused by shrinkage and creep of concrete. The purpose of this paper is to provide an economical and accurate basis and guidance for engineering design and on-site physical testing in time through the simulation analysis of long-span prestressed reinforced concrete beams with the help of sophisticated finite element analysis software.