通过对这些参数的研究表明：在卸载的全过程中，颗粒间相对滑移出现，相互作用的颗粒数减少，系统内部结构产生不可恢复变形。
It was shown that at all stages of unloading, interparticle sliding occurred, the number of interparticle contacts reduced and irrecoverable deformation of the microstructure occurred.
根据弹性变形的可恢复特性，提出一种利用临时预应力钢束放松时产生的弹性恢复变形，来减小由于混凝土弹性压缩引起的预应力损失的方法。
In this paper, a method is given for reducing the prestress loss caused by elastic compression of concrete by using the recoverable property of elastic deformation.
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