杨  军     (清华大学土木系  北京 100084)

[提要]  Mathcad是最直观、最易为广大工程技术人员掌握的交互式数学软件。通过新混凝土规范和抗震规范中的抗冲切验算和地震影响系数曲线的绘制，举例说明了Mathcad的自动计算、编程和绘图等功能在结构设计中的应用。可供从事工程计算时参考。
[关键词]  数学软件  Mathcad结构设计  冲切验算  地震影响系数

Mathcad is the most straightforward interactive mathematic software which can be mastered by most engineers. Functions of Mathcad, such as automatic calculating, programming and plotting, are illustrated by evaluating punching shear capacity and drawing seismic influence factor curve according to the latest version code of concrete and seismic design.
Keywords: mathematic software; Mathcad; structure design; punching shear capacity; seismic influence factor