短柱基础在模块化变电站钢框架结构设计中的应用研究

Applied study of the short column foundation in the design of modular substation steel frame structure

随着国网公司对智能变电站模块化建设的不断推进,钢框架结构形式得到广泛应用。变电站内的建筑物通常层高较高、基础埋深较大。短柱基础可有效减小底层柱的计算长度,满足底层抗侧刚度要求。结合工程实例,对单、多层钢框架结构采用不同高度及截面尺寸的短柱基础与按以短柱顶为嵌固端进行简化计算的分析比较,总结采用短柱基础的钢框架设计方法,为模块化变电站标准化设计积累经验。

With the continuous promotion of modular construction of Smart Substation by State Grid Corporation of China,steel frame structure is widely used.The buildings in substations are usually of high floor height and deep foundation.The puncheon foundation can effectively reduce the calculation length of the bottom column and meet the requirements of the bottom lateral stiffness.Combined with the engineering example,the simplified calculation analysis and comparison of steel frame structure with puncheon foundation of different height and size and with puncheon top as embedded end are carried out,and the design method of steel frame with puncheon foundation is summarized so as to accumulate experience for standardized design of modular substation.