王  猛¹，马  健²，孙学军²
（1莱钢建安公司，莱芜271104; 2 莱钢股份有限公司，莱芜271104）

[摘要] 某钢厂炼钢车间老厂房，由于生产需要已历经多次改造及鉴定加固。现通过对排架结构、炉前局部框架结构、行车梁系统以及屋面系统结合生产实际再次进行了加固处理，保证了厂房的安全使用。
[关键词] 鉴定；加固；行车梁；排架；框架

Overload steel structure crane beam two reinforcement method
Wang Meng¹, Ma Jian², Sun Xuejun¹
(1 Laiwu Iron & Steel Incorporation State Construction, Laiwu 271104, china; 2 Laiwu Steel Corporation, Laiwu 271104, China)

Abstract: Some steel mill continually molten steel accepts cross, the originaldesign is 75t and the 32t two driving, as a result of the production craft request, must change the 75t driving the 110t driving. Therefore, carried on the reinforcement to the steel crane beam, theunion has been actual to two reinforcement designs method has carriedon the intensity and the rigidity examination.
Keywords: crane girder; intensity; rigidity