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Method for calculating calculation length coefficient of giant cross-floor member

A technology for calculating length coefficients and calculation methods, which is applied in calculation, electrical digital data processing, design optimization/simulation, etc. It can solve problems such as different results, safety and cost impacts, model simplification methods, and different loading methods to achieve savings Time, the effect of ensuring correctness

Active Publication Date: 2017-07-07
CHINA IPPR INT ENG
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Problems solved by technology

[0037] It can be seen from these cases that although the Euler formula is used, the simplification and loading methods of the models are different, and the results are also very different. There is no conclusion in the industry about which method is more suitable. Both safety and cost can have a big impact

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  • Method for calculating calculation length coefficient of giant cross-floor member
  • Method for calculating calculation length coefficient of giant cross-floor member
  • Method for calculating calculation length coefficient of giant cross-floor member

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[0066] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the appended claims of the present invention.

[0067] The various problems currently existing are largely caused by the vague understanding of the definition and scope of application of Euler's formula. Therefore, it is necessary to further deduce and understand Euler's formula.

[0068] Select a rod with length l and bending stiffness EI, assuming that the restraint force at the origin of the rod is axial force Ncr(0), shear force Q(0) and bending moment M(0), for the rod The part with length x has Ncr(x)=Ncr(0), Q(x)=Q(0), M(x)=M(0), that is, the internal force of the member is constant along the length direction, Members cannot have additional constraints other than the ends. T...

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Abstract

The invention discloses a method for calculating a calculation length coefficient of a giant cross-floor member. The method comprises the following steps of S100, removing all floor beams and floor slabs between belt trusses on the calculated giant cross-floor member, reserving all floor beams and floor slabs of a reinforcement layer, and reserving a core barrel; S200, segmenting the calculated giant cross-floor member, and ensuring that the middle of each section of the calculated giant cross-floor member is free of any other constraint; S300, applying a load to each calculation section of the calculated giant cross-floor member, performing elastic-static calculation, and extracting axial force N of each calculation section of the giant cross-floor member; and S400, performing buckling condition calculation under the load, finding out reasonable buckling mode and buckling factor eta, then obtaining a buckling load Ncr=N eta, and obtaining the calculation length coefficient of each calculation section by using an Euler formula. The calculation length coefficient calculated with the method is correct in concept and has a certain safety stock; and the method is especially suitable for a relatively large model.

Description

technical field [0001] The invention relates to the structural design of super high-rise buildings in the field of civil engineering, in particular to a calculation method for calculating the length coefficient of a giant layer-penetrating member, which is used to solve the problem of calculating the length coefficient of a giant layer-through member (column, support) when checking and calculating value problem. Background technique [0002] The cross-floor component, also known as the cross-floor component and cross-floor component, refers to the situation that the component is not constrained by other components (floor panels, floor beams, supports, etc.) when passing through the floor, or the stiffness of the constraint is lower than the component itself . In super high-rise structures, the layer-penetrating members mainly refer to giant concrete-filled steel tube columns and giant diagonal braces. The floor and floor beams between adjacent waist trusses have lower rigid...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/13G06F30/20
Inventor 马瑞嘉张同亿王文渊王若南王宁罗佑新
Owner CHINA IPPR INT ENG
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