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design of steel crane girder 钢吊车梁设计
welded steel crane girder 焊接钢吊车梁
welded steel crane-girder 焊接钢吊车梁
steel crane girder design 钢吊车梁设计
If the increment can't be calculated, the initial pretension won't be known. Moreover, the prestress strengthening analysis of steel crane girder isn't provided in present material.
若不计算出这一效应增量，初始预应力就无法计算，况且在目前的所有规范和参考资料中，无一谈及钢吊车梁的加固验算公式。
参考来源 - 钢吊车梁的校核分析及预应力加固研究·2,447,543篇论文数据，部分数据来源于NoteExpress
It is an effective method to carry out regularly inspection on steel crane girder structures in order to prevent from fatigue failure.
对在役钢结构吊车梁进行定期、不定期的检查是避免发生疲劳失效的最有效方法。
Finally, it presents some advice and Suggestions for the repairing and strengthening method of fatigue crack of upper part of steel crane-girder in the high-frequency.
最后就重级工作制钢吊车梁上部区域出现疲劳裂缝的修复与加固方案提出了一些意见和建议。
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