本文主要讨论在一般小型设计室而无电子计算机的情况下，如何迅速而简便地计算低层多跨框架的内力。
This paper primarily discusses a simple method for computing inter force of structure of frames. This method can be used without electric computer.
直接计算方法不但对简支梁适用，对比较普遍的多跨框架梁，而按单跨进行体外索布索加固的情形也是可行的。
The direct design approach is applied not only in the simple-span beams with external post-tensioning, but also in the multi-span frame beams.
在本论文工作之前，本学科点已利用该程序完成了处于不同设防烈度区的各类典型多层多跨框架结构的系列非线性动力反应分析工作。
Our research group has completed a series of nonlinear dynamic response analysis of various typical multi-storey and multi-span frameworks in various intensity-category by this program.
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