摘要
为了确定柱下矩形扩展基础的底面积,必须进行地基承载力的验算;教学时一般采用试算确定基础的底面积,试算的次数依经验而定;对于P≤b/6的情况,很多文章提出了直接求解一元三次方程的手算方法。本文提出一种不需反复试算的直接精确解法,不论偏心距的大小均可直接求得精确解,并以MATLAB为平台编制了程序便于学生和设计人员使用。
To determine the bottom area of the rectangle expand foundation of columns, the carrying capacity of the ground must be verifyed by caeulation. Trial-calculation is usually adopted to determine the foundation bottom area in teaching and the times of the trial-calculation depends on experiences. At the situation of ek ≤ b/6 , a lot of papers provide a hand method to solve cubic equation directly. A direct accurate solution without many trial-calculation is put forward to solve this problerm, no matter the degree of eccentricity of columns. And it is compiled to routine for students and designers with MATLAB.
出处
《结构工程师》
北大核心
2012年第3期123-127,共5页
Structural Engineers
关键词
单向偏心
矩形扩展基础
基础
直接精确解
unilateral eccentricity, rectangle expand foundation, foundation, direct accurate solution
