摘要
部分预应力砼梁缝宽度计算或疲劳验算以及钢筋砼小偏压构件正截面强度计算，均需求算关于截面受压区相对高度系数 的三次方程．用常用的数学方法一次换元消去ζ２项，给出ζ的精确解．此法不仅可方便的用于工程设计，而且可避免进行复杂的抗裂验算．
For evaluating the crack width and checking the fatigue strength of a partially prestressed concrete beam, or calculating the strength of normal section of compression member with small eccentricity. It usually needs to compute the value of of a relative height in the compression region of the section. This paper offers an accurate calculation of by the currently used mathematical method of eliminating term by exchanging el-ement to solve the cubic equation for . it is very convenient for engineering design and avods the complicated crack calculation has been proposed.
出处
《河北工业大学学报》
CAS
2002年第1期108-110,共3页
Journal of Hebei University of Technology
关键词
预应力砼受弯构件
截面受压区
相对高度系数ζ
prestressed concrete beam: compression region of the section
value of of a relative height
