前言在预应力混凝土直线连续梁桥中,以往采用的是居易翁(Guyon)理论,预应力钢束外形经过线性变换后,其压力线仍保持不变。该理论研究连续梁的压力线是十分简单的,然而在曲线梁桥中,这个理论就不再有效了。我们将看到,由于梁在平面上的弯曲,而预应力钢束必须要与曲线梁的轴线一 Predecessors In prestressed concrete straight-line continuous beam bridges, Guyon theory was used in the past. After the shape of the prestressed steel beam was transformed linearly, the pressure line remained unchanged. The theory of continuous beam pressure line is very simple, but in the curved beam bridge, this theory is no longer valid. We will see that due to the bending of the beam in the plane, the prestressing tendons must be aligned with the axis of the curvilinear beam