A whole-process slippage calculation method for an assembly type shear connector

A calculation method and assembly technology, applied in calculation, special data processing applications, instruments, etc., can solve the problems affecting calculation accuracy and structural safety, calculation errors of composite beam stiffness and bearing capacity, and small slip calculation results, etc. problems, to achieve the effect of ensuring calculation accuracy and structural safety, correct calculation, and accurate slip calculation results
CN109933838AActive Publication Date: 2019-06-25CHONGQING JIAOTONG UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING JIAOTONG UNIVERSITY
Publication Date
2019-06-25

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Abstract

The invention discloses an assembly type shear connector whole-process slip calculation method, which comprises the following steps: S1, determining assembly type composite beam section geometric parameters and a plate height analytical expression: epsilonct is nominal tensile strain calculated for concrete; epsilonP0 is the prepressing strain of the upper edge of the concrete slab; epsilont is concrete limit tensile strain; And S2, according to the balance relation of the internal force of the composite beam in the microsection. The invention has the advantages that: with the increase of load, the slippage is also increased; In different stages, the cracking slip increment increase speed is increased along with load increase, and obvious nonlinearity is shown; Precast concrete bridge roadslab joints of the tension area of the fabricated composite beam crack, so that the slippage of the composite beam is increased compared with that of a conventional composite beam, the influence is considered, the slippage calculation result is accurate, the rigidity and the bearing capacity of the composite beam are calculated without errors, the result is accurate, and the result calculation precision and the structural safety are guaranteed.
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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 with prefabricated construction, and the cracking and even failure characteristics of the prefabricated bridge sl...

Claims

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