各种连接细节的疲劳性能是焊接钢桥研究的热点问题之一。
Fatigue cracks initiated from various connection details are common problems in welded steel bridge structures.
焊接钢桥结构持续损伤至破坏的过程可以从两方面加以分析：一方面要考虑此过程中能量的耗散；另一方面要考虑此过程中焊接部位损伤负向激励。
For the behavior of structure fracture, the dissipation of energy and the damage of passive encourage should be taken into consideration in the course of dynamic damage.
根据熔化极焊丝填充焊的特性，对钢桥焊接中普遍应用的药芯焊丝CO_2气体保护焊和埋弧自动焊进行了焊接试验。
According to the characteristics of arc welding with filler wire, experiments about the FCAW-CO_2 and SAW which is commonly used in steel bridge welding were carried out.
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