The accuracy of calculation is checked by the reciprocal theorem of work, and the result of vertical pile is compared with other's.
计算的精度用功的互等定理来检查，并将直桩的结果与别人的直桩结果作比较。
In this paper we mentioned a new way of applying the reciprocal theorem of work, which is clear in concept and simple in procedure.
本文提出的计算方法是功的互等定理的新应用，具有概念清晰、步骤简捷的特点。
Based on the reciprocal theorem of work, the paper presented a method to calculate influence lines of internal forces with finite element.
利用功的互等定理，推出适用于有限元求解内力影响线的方法。
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