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    楊  軍     (清華大學(xué)土木系  北京 100084)

[提要]  Mathcad是最直觀、最易為廣大工程技術(shù)人員掌握的交互式數(shù)學(xué)軟件。通過新混凝土規(guī)范和抗震規(guī)范中的抗沖切驗(yàn)算和地震影響系數(shù)曲線的繪制，舉例說明了Mathcad的自動(dòng)計(jì)算、編程和繪圖等功能在結(jié)構(gòu)設(shè)計(jì)中的應(yīng)用?？晒氖鹿こ逃?jì)算時(shí)參考。
[關(guān)鍵詞]  數(shù)學(xué)軟件  Mathcad結(jié)構(gòu)設(shè)計(jì)  沖切驗(yàn)算  地震影響系數(shù)

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