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一、前言我国工业与民用建筑预应力混凝土结构现行设计方法系按结构不同抗裂度要求分别进行计算。该方法与以往沿用的设计方法比较具有概念明确、计算简单、通俗易懂、易于掌握、符合国情有我国特色等优点。这为我国普及推广应用预应力混凝土,节约钢、木材、水泥起到了积极推动作用,并收到了显著的经济效果。当前,预应力混凝土结构根据性能和极
I. Preface The current design methods of prestressed concrete structures for industrial and civil buildings in China are calculated separately according to different requirements of structural anti-cracking. Compared with the design methods used in the past, this method has the advantages of clear concepts, simple calculation, easy to understand and easy to grasp, which is in line with China’s national conditions and features. This has played a positive role in promoting the popularization and application of prestressed concrete, saving steel, wood and cement in our country and has received significant economic results. Currently, prestressed concrete structures are based on performance and pole