摘要:
汽轮发电机是电厂的心脏,又是高速运转的精密仪器。为了保证汽轮发电机的正常及持久运行,作为其支撑结构的汽轮发电机基础,其设计要求尤其是沉降差的限制很高。地基基础设计规范提供的沉降计算方法适用于独立基础,其计算出来的沉降是一个点的沉降,不适用于汽轮发电机基础。研究内容共有三个部分:第一,通过适当的假定,将规范中独立基础的沉降计算方法向其他任意的基础形式进行推广;第二,以具体工程实例为基础,展示由前面的计算假定建立的设计方法,进行汽轮发电机基础的沉降计算;第三,试图从理论上统一基础的沉降计算、基础内力分析方法,简化设计流程,并对需要进行调心计算的动力机器基础和其他对基础倾斜敏感的建构筑物,建立更具一般性的、由沉降所控制规范准则,该方法尤其适用于土层分布复杂的情况。
Abstract:
turbo generator is the heart of the power plant, and is a precision instrument for high speed operation. In order to ensure the normal operation of the turbo generator, as the foundation of its supporting structure, the design requirement (especially settlement control) is very high. The settlement calculation method provided by the foundation design specification is applicable to the independent foundation, and the calculation result is a settlement of a point, which is not suitable for the turbine generator foundation. There are three parts in this paper. First, through appropriate assumption, the settlement calculation method based on the independent foundation is extended to other arbitrary foundation forms. Second, based on the actual engineering practice example, the design method based on the above assumptions is shown; third, the author tries to simplify the design process, and to establish a more general standard for the eccentric design of dynamic machine and other building and structure, which is sensitive to uneven settlement.
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