软土地基、高烈度区的汽轮发电机基座选型对比

Comparison of Two Selection Schemes for Tubro-generator Foundation in Regions With Soft Ground and High Seismic Fortification Intensity

以天津某电厂为例,探讨了高烈度区、软土地基的汽轮发电机基座的结构选型,对我国目前汽轮发电机基座采用的钢筋混凝土普通柔性基础和弹簧隔振基础2种结构形式进行了动力特性比较。结果表明,在软土地基、高烈度区汽轮发电机基座选用弹簧隔振基础虽然会增加投资,但具有更好的安全、可靠性,推荐采用。

Taking a power plant in Tianjin as an example, this paper makes a technical analysis on selections of turbine foundations in soft soil ground in highly seismic region and conducts a comparison of the dynamic characteristics between the common flexible reinforced concrete foundation and the spring-supported foundation. The comparison results show that the spring-supported foundation, though higher in cost, is superior in safety and reliability and therefore recommended for use.