The present invention relates to a method for setting an operating load, in particular a wind load, of a tower structure, in particular a tower structure for wind power generation equipment. The invention further provides a method for designing a tower structure, in particular a tower structure for a wind power installation, a method for determining the useful life of a tower structure, in particular a tower structure for a wind power installation, and a tower structure, in particular a wind power installation. The tower structure and wind power generation equipment The method for setting the operation load of the tower structure includes setting a load parameter in a load direction, setting a load direction generation distribution, and setting a load parameter corrected by the load direction distribution. [Selection] Figure 2
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