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美国ACI规范不仅适用于普通钢筋混凝土结构,亦适用于预应力混凝土结构。本讲座根据已收集到的资料,介绍1989年重新修订的ACI318规范中有关预应力混凝土的条款,并阐明预应力混凝土基本构件的设计方法、预应力损失的计算,以及美国习用的张拉锚固方法等。本刊曾于1987年技术讲座中连载有关美国ACI钢筋混凝土结构设计方法。本讲座将与1987年讲座构成一完整的体系,使读者得以全面了解ACI规范设计方法。
The American ACI specification applies not only to ordinary reinforced concrete structures but also to prestressed concrete structures. Based on the collected data, this lecture introduces the provisions of the revised ACI 318 specification for prestressed concrete in 1989, and clarifies the design method of prestressed concrete basic components, the calculation of prestress losses, and the conventional tension anchorage method in the United States. Wait. This journal once serialized the design method of ACI reinforced concrete structures in the United States in a 1987 technical lecture. This lecture will form a complete system with the 1987 lectures so that readers can fully understand the ACI specification design method.