雷自学，李娜，张琼，袁卫宁
    (长安大学建筑工程学院，西安710061)

[摘要] 基于预应力混凝土受弯构件正截面承载力的计算原理，采用MathCAD软件进行编程，精确计算任意截面的预应力及非预应力混凝土构件的正截面受弯承载力。本文以箱形截面梁为例，对编程方法做了说明，并采用大型通用有限元软件ANSYS创建实体模型，进行了非线性有限元计算，证明了MathCAD编程计算方法的实用性和有效性。
[关键词] MathCAD；正截面受弯承载力；有限元

Calculating the bending capacity of normal section of prestressed concrete beam with MathCAD
LeiZixue, LiNa, ZhangQiong, YuanWeining

Abstract: On the basis of the principle for calculating the bending capacity of normal section of prestressed concrete beam, the flexural capacity of normal section of prestressed concrete beam and reinforced concrete beam of arbitrary section was derived accurately by programming with MathCAD. With box a girder as example, this paper explains the method of programming, and an finite element calculation was carried out by modeling with ANSYS to illustrate usefulness and effectiveness of the proposed method.
Keywords: MathCAD; maximum flexural strength; firute element