Layer-by-layer assembly and layer-by-layer pre-internal force of multi-layer frame structure and calculation method thereof

The invention discloses a layer-by-layer assembly and layer-by-layer pre-internal force of a multi-layer frame structure and a calculation method thereof. The calculation method comprises the following steps: calculating the load of the multi-layer frame structure; sequentially assembling each layer of frame structure of the multi-layer frame structure, adjusting the component node connection state of the current layer of frame structure to be a first connection state after the current layer of frame structure is assembled, and applying a preload to the current layer of frame structure; adjusting the component node connection state of the current-layer frame structure from the first connection state to a second connection state, and unloading the preload on the current-layer frame structure; and when the component node connection state of each layer of frame structure is kept in the second connection state, a load is applied to the multi-layer frame structure. By adopting the method provided by the invention,