unstrained

Without assuming the form of unstrained state,the form of unstrained state corresponding to that of pre-stressed state can be obtained through this method directly.

该方法无需假定结构零状态几何,而可以一次得到对应于初状态(即预应力态)几何的结构施工寸(即零状态几何),并通过分级加载对该方法的精度进行了检验。