Pre-internal force of flexural member and calculation method thereof
A flexural member and calculation method technology, applied in instruments, geometric CAD, electrical digital data processing, etc., can solve the problem of uneven distribution of internal force of flexural members, poor mechanical performance and economy of flexural members, and misjudgment of structure. And other issues
Pending Publication Date: 2021-03-05
SHENZHEN GENERAL INST OF ARCHITECTURAL DESIGN & RES
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[0003] However, in the actual design and construction, it is found that the internal force distribution of the flexural members obtained by the above method is very uneven, and the existence of this situation will easily lead to the stress of the flexural members in the structure in the actual design and construction (or manufacturing). The performance and economy are not good, and in severe cases, there may even be a misjudgment that the structure is not feasible
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[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0040] In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", The orientations or positional relationships indicated by "vertical", "horizontal", "horizontal", and "longitudinal" are based on the orientations or positional relationships shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not intended t...
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The invention discloses a pre-internal force of a flexural member and a calculation method thereof. The calculation method comprises the following steps: adjusting a connection state of at least one end of the flexural member to a first connection state and applying a pre-load; adjusting the connection state of at least one end of the flexural member again from the first connection state to the second connection state, removing the preload and applying a load to the flexural member; and calculating the internal force of the flexural member in the first connection state based on the applied preload, respectively calculating the internal force of the flexural member in the second connection state based on the unloaded preload and the applied load, and superposing the internal forces to obtain the target internal force. By adopting the method disclosed by the invention, the stress of the flexural member can be homogenized by applying and removing the preload, so that positive and negativebending moments at the end part and the midspan of the flexural member are effectively reduced and homogenized, the bending moment amplitude difference is effectively reduced, the stress performanceand the economy of the flexural member in the structure are further improved, and the situation that the misjudgment structure is infeasible is avoided.
Description
technical field [0001] The invention relates to the technical field of structural engineering, in particular to a pre-internal force of a flexural member and a calculation method thereof. Background technique [0002] In engineering, in order to facilitate the analysis of the structural strength that the flexural members (such as beams, slabs or walls) can withstand in actual construction (manufacturing), the internal force of the flexural members is usually analyzed and calculated to determine the The mechanical performance of bending members in the structure. At present, for the force calculation of flexural members, it is usually calculated by setting the ends of the flexural members as fully hinged or fully fixed, and bearing all the loads. [0003] However, in the actual design and construction, it is found that the internal force distribution of the flexural members obtained by the above method is very uneven, and the existence of this situation will easily lead to th...
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Inventor 郭满良
Owner SHENZHEN GENERAL INST OF ARCHITECTURAL DESIGN & RES