摘要
Abstract
At present,the additional stress coefficient at any point of the rectangular foundation subsoil under the vertically even distributed load is mainly obtained by the corner point method with the help of the “table look-up”and the interpolation.Although the method seems to be easy to use, the results may vary from person to person.In this paper,the author uses the integration method derivates the computational formulas about the additional stress coefficient at any point of the rectangular foundation subsoil under the vertically even distributed load.Moreover,The author also presents some specific formulas for calculating a corner point,a central point,a mid-point on the long side as well as a corner point of a 2l×2b region beyond the rectangular foundation.By comparing with the formulas for the additional stress coefficients under the corner points listed in the related literature,it is found that the derivated formulas in this paper are completely correct.Although the formulas seem complicated,they are easy to use with the help of the Excel Program Calculation Sheet.They can avoid the interpolation values differences due to different users and the possible confusion due to different rectangle area of l/b and z/b during the calculation by the corner point method.As long as the length l and width b of the rectangular area are given,the additional stress coefficient at any point of (x ,y ,z )can be calculated,which,to some extent,makes the rapid calculation possible.Therefore,the formulas can be very conveniently applied to the practical work for the engineering technicians.关键词
矩形基础/垂直均布荷载/任意点/附加应力系数/公式推导Key words
rectangular foundation/vertical even load/any point/additional stress coefficient/formula derivation分类
建筑与水利
