Loading and internal force calculation method of multi-internal-force component

Abstract

The invention discloses a loading and internal force calculation method for a multi-internal-force component. The method comprises the steps that the total load needing to be borne by the multi-internal-force component when the node connection state of the multi-internal-force component is generated at a time is calculated; adjusting the connection state of at least one node of the multi-internal-force component to be a first connection state, applying a first load to the structure where the multi-internal-force component is located, and calculating a first internal force when the at least onenode of the multi-internal-force component is in the first connection state according to the first load; adjusting the connection state of at least one node of the multi-internal-force component again, so as to enable the node of the multi-internal-force component from the first connection state to the second connection state; applying a second load to the structure where the multi-internal-forcecomponent is located, and calculating the second internal force generated when the at least one node of the multi-internal-force component is in the second connection state according to the second load; by implementing the calculation method, the internal force can be homogenized, the amplitude can be reduced, the stress deformation performance of the component can be improved, the situation of negative structure feasibility caused by misjudgment can be avoided, and the economy is better.

Description

technical field [0001] The invention relates to the technical field of structural engineering, in particular to a loading and internal force calculation method of a multi-internal force component. Background technique [0002] In traditional engineering structures, the connection between components or supports, taking the connection between components as an example, generally adopts rigid joints, hinged joints or sliding connections. When the engineering structure is subjected to load, internal forces of components will be generated. Usually, before the actual construction (manufacturing) of the structure, it is necessary to calculate and analyze the internal force of the components to ensure the mechanical performance of the engineering structure. [0003] At present, the method of calculating the internal force of components is roughly as follows: first, connect the components to the connection state after the actual construction (manufacturing), apply all the loads in th...

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Problems solved by technology

[0004] However, with the current calculation method of component internal force, because the distribution of component internal force is related to the connection stiffness of the component, if the connection stiffness is large, the distribution of internal force will be concentrated. Therefore, if the connection state of the component is formed at one time and carries all the load at one time, the calculated The distribution of the internal force of the member is uneven (may be concentrated in some places with high connection stiffness), and the amplitude is large

After the structure is actually built (manufactured), the stress and deformation performance of the components is not good, and even misjudgments lead to the denial of the feasibility of the structure

And, in order to avoid the situation of insufficient component strength, it is necessary to increase the cross-sectional specification, which leads to waste of materials and poor economic efficiency

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