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部分预应力混凝土是针对全预应力混凝土的设计理论和在实践中存在的一些问题,于近十几年内发展起来的一种新的预应力混凝土。它兼有全预应力混凝土与普通钢筋混凝土两种结构的优点,既能更好地控制使用条件下的裂缝、挠度与反拱,破坏时又具有较高的延性与能量吸收的能力,因此在国际上受到重视,其合理性与经济性被各国工程界所普遍接受,并认为这种介于全预应力混凝土与普通钢筋混凝土两个极端状态之间的部分预应力混凝土将成为加筋混凝土系列中发展的一个主流。部分预应力混凝土的预应力度λ介于1与0之间(即1>λ>0),对
Partially prestressed concrete is a kind of new prestressed concrete developed in recent ten years in response to the design theory of full prestressed concrete and some problems in practice. It combines the advantages of both prestressed concrete and ordinary reinforced concrete structure, both to better control the cracks, deflection and arch under the conditions of use, destruction and high ductility and energy absorption capacity, so in The international attention, its rationality and economy are generally accepted by engineering countries, and that this part between the prestressed concrete and ordinary reinforced concrete two parts of the prestressed concrete will be reinforced concrete series In the development of a mainstream. Partially prestressed concrete prestressed strength λ between 1 and 0 (ie 1> λ> 0), the right