At first, small wave load have caused an amount of damage and decrease the ultimate bearing capability to the structures, then fatigue load have caused wholly destroy.

首先因较小的波浪载荷引起一定的疲劳损伤并造成极限承载能力的下降，然后因极限波浪载荷而引起结构的完全破坏。

The truth structure destruction is decided by the combination action of load breadth and circular load effect explains preferably effect three essential of earthquake motions to structure destroy.

破坏是由荷载幅值和循环加载效应的联合作用引起这一事实，较好地解释了地震动三要素对结构破坏的影响。

The alternate test of static load and dynamic load on RC beam serves the study of the frequency change disciplinarian from integrity to destroy of RC beam.

通过对钢筋混凝土梁进行不同荷载等级下静载和动载的交替实验，得到混凝土梁从完整到破坏的频率变化规律。