一、概述曲线上桥梁布置采用偏角法计算,既方便施工又能满足精度要求,同时还能在计算中闭合,便于校核。故目前在设计与施工中普遍采用此种方法。但在应用此方法时,还存在一些缺点,即在计算交点距L时,与偏角α互为因果,互相牵连,在计算偏角α时与交点距L有关,计算L时又与α有关,需要有一个试算过程,如先假设梁缝值F,估算交点距L,再算得其偏角α,然后根据计算结果α,核算梁缝值F,并与假设的梁缝值比较,修正梁缝值,重新计算交点距L和偏角α,反复试算,虽然一般只需要反复试算一次,但仍然费时较多。采用一次计算方法,就可以使假设的梁缝值与 I. Overview The bridge layout on the curve is calculated by the declination method, which not only facilitates the construction but also meets the precision requirements, and can also be closed in the calculation for ease of checking. Therefore, this method is commonly used in design and construction. However, there are some shortcomings in the application of this method, that is, in the calculation of the intersection of the distance L, and the declination α mutual causation, interrelated, in calculating the declination angle α with the intersection of the distance L, and L and α , There is a need for a trial process, such as the assumption that the beam joint value F, the estimated intersection L, and then calculate the angle α, and then calculated the beam angle α, the beam F, and the beam beam value compared with the amendment Beam value, recalculation of intersection L and declination angle α, repeated trial and error, although generally only need repeated trial once, but still more time-consuming. Using a calculation method, you can make the assumption that the beam joint value and