空腹式拱桥大都采用悬链线作为其拱轴线,但计算空腹式悬链线拱的恒载内力时常采用与实腹式是链线拱相同的计算方法,即把空腹拱恒载通过“五点重合法”,简化为一个假想的实腹拱恒载来进行计算。显然,这样计算所得的结果与实际情况有一定的出入,而且这种出入往往是不能忽视的(参见文献[1])。现提出一种较为简便的方法来修正上述计算所产生的偏差。 Fasting arch bridge mostly adopts catenary as its arch axis, but the calculation of internal force of constant load of fasting catenary arch arch often uses the same calculation method as the actual abdominal arch catenary, that is, Coincidence ", reduced to a hypothetical real abdominal arches to be calculated. Obviously, the result of this calculation is different from the actual situation, and this kind of discrepancy can not be neglected (see [1]). A simpler method is now proposed to correct the deviation caused by the above calculation.