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部分预应力在各国预应力界颇受重视,应用日益广泛。构件的预应力度可以根据其环境暴露条件和荷载特点来确定,从而计算所需的预应力值,并根据强度要求,配置非预应力钢筋。本文仅就梁式构件中非预应力筋的影响(次应力)以及如何将全预应力梁改为部分预应力梁的能量分析谈谈我们的浅见,供有关方面参考。在外压作用下的普通钢筋混凝土截面,
Partial prestresses are highly valued in prestressed fields in various countries and have become more widely used. The prestress degree of the component can be determined according to its environmental exposure conditions and load characteristics, so as to calculate the required prestress value, and configure the non-prestressed steel bar according to the strength requirement. This article only talks about the influence of the non-prestressed tendons in the beam members (secondary stress) and the energy analysis of how to change the full prestressed beams into partially prestressed beams, for reference by relevant parties. Ordinary reinforced concrete section under external pressure,