预应力混凝土结构的当量荷载计算

Calculation of Analogical Loads for Prestressed Concrete Structures

本文提出了后张预应力在混凝土结构中产生的当量荷载的计算方法。推导了等代预应力对结构作用的等效荷载和当量荷载，揭示了等效荷载与当量荷载的区别与联系。对于沿连续布置预应力筋范围内构件截面有变化的结构，用当量荷载等代预应力效应，计算方法简捷，计算结果正确。

In this paper, a method for calculating the analogical loads, i. e. equivalent loads for equallysubstituting the effect of prestressing in members with varying sections, caused by post-tensioningis presented. Both the formulas for calculating analogical loads as well as equivalent loads caused bypost-tensioning are derived. Both the differences and relations between these two kinds of loads areelucidated. For structures with varying sections along the member within the region reinforcedwith a continuous prestressing tendon, and the effect of post-tensioning prestress on structures be-ing substituted equally by analogical loads, the suggested method will be simple and the results accurate.