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A Calculation Method for the Whole Process Slippage of Assembled Shear Connectors

A calculation method and assembly technology, applied in complex mathematical operations, instruments, geometric CAD, etc., can solve problems such as small slip calculation results, increased slip of composite beams, calculation errors of composite beam stiffness and bearing capacity, etc.

Active Publication Date: 2022-05-17
CHONGQING JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in increased slippage of the composite beam. If this effect is not considered, the calculation result of the slippage will be too small, and the calculation error of the stiffness and bearing capacity of the composite beam will be too large, which will affect the calculation accuracy and structural safety of the result.

Method used

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  • A Calculation Method for the Whole Process Slippage of Assembled Shear Connectors
  • A Calculation Method for the Whole Process Slippage of Assembled Shear Connectors
  • A Calculation Method for the Whole Process Slippage of Assembled Shear Connectors

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Embodiment

[0050] Referring to Tables 3-7, 3-8, 3-9, and 3-10, a calculation method for slippage in the whole process of fabricated shear connectors, the calculation method includes the following steps:

[0051] S1, determine the geometric parameters of the assembled composite beam section, the analytical formula of the plate height is:

[0052]

[0053] where: ε ct Calculate the nominal tensile strain for concrete; ε p0 is the precompressive strain at the edge of the concrete slab; ε t is the ultimate tensile strain of concrete;

[0054] S2, according to the balance relationship of the internal force of the composite beam in the micro-segment, the static balance equation of the concrete slab and the steel beam in the micro-segment is established:

[0055]

[0056] S3, establish the curvature calculation equation of steel truss beam and concrete slab:

[0057]

[0058] S4, establish the slip-shear stress relationship calculation formula:

[0059]

[0060] S5, the slip-lo...

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Abstract

The invention discloses a method for calculating the slip in the whole process of an assembled shear connector. The calculation method includes the following steps: S1, determining the geometric parameters of the assembled composite beam section, and the analytical formula for the height of the plate is: where: ε ct Calculate the nominal tensile strain for concrete; ε p0 is the precompressive strain at the edge of the concrete slab; ε t is the ultimate tensile strain of concrete; S2, according to the balance relationship of the internal force of the composite beam in the micro-segment. The advantages are: as the load increases, the slip also increases; at different stages, the speed of the increase in cracking slip increases with the increase of the load, showing obvious nonlinearity; the precast concrete in the tension area of ​​the assembled composite beam The cracking of the bridge slab joints will lead to greater slippage of composite beams than conventional composite beams. Considering this effect will lead to accurate slip calculation results, correct calculation of composite beam stiffness and bearing capacity, and accurate results, ensuring calculation accuracy and structural safety sex.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a method for calculating the slip of an assembled shear connector in the whole process. Background technique [0002] The slip calculation of existing stud shear connectors in steel-concrete composite beams is usually for the integrated concrete bridge slab composite structure of conventional cast-in-place construction. Based on the continuous force of the structure, the concrete slab in the micro-segment beam is established And the static equilibrium differential equation of the steel beam, and according to the slip constitutive and boundary conditions, the analytical formula of the slip distribution of the stud-shear connection in the beam under various loads is obtained. [0003] The above methods do not consider the steel-concrete composite girder bridge of prefabricated construction, and the cracking and even failure characteristics of the prefabricated bridge slab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/13G06F17/13G06F119/14
Inventor 高燕梅
Owner CHONGQING JIAOTONG UNIVERSITY