translation of functions

By selecting a kind of simplified model of underground diaphragm wall and introducing a reasonable lateral displacement function,an approximate method for calculating the lateral displacement of the diaphragm wall is deduced with the principle of minimum potential energy.

选取一地下连续墙的简化模型,引入合理的地下连续墙水平位移函数,运用最小势能原理导出了其水平位移的一种近似解法。