部分荷载时，双压机交替运行，寿命更长。

Part of the load, the double-press alternately run and longer life.

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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。

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.

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试验分析了荷载和干湿交替环境共同作用下CFRP -钢界面破坏特征、极限荷载影响和破坏机理。

The ultimate bear capacity, the failure characteristics of the CFRP and steel interface are studied after long term loading and dry-wet cycling.

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