Assessment method for transverse crack load transfer characteristic of continuous reinforced concrete pavement and computer equipment

Abstract

The invention discloses a continuous reinforced concrete pavement transverse crack load transfer characteristic evaluation method and computer equipment, and the method comprises the steps: S01, carrying out the modeling of a to-be-evaluated CRCP pavement, and controlling the deflection of pavement slabs at the two sides of a transverse crack in a model under the load effect according to the deflection load transfer coefficient of the transverse crack of the to-be-evaluated pavement; s02, stress reduction coefficients corresponding to different deflection load transfer coefficients in the CRCP pavement model are calculated, and a relation function between the stress reduction coefficients and the deflection load transfer coefficients is obtained; s03, calculating a deflection load transfer coefficient and a stress reduction coefficient of the CRCP pavement model under different plate thicknesses, and constructing a regression function between the stress reduction coefficient and the deflection load transfer coefficient; and S04, calculating by using a regression function according to the actual pavement thickness to obtain a corresponding stress reduction coefficient, and obtaining an evaluation result by using the stress reduction coefficient. The method has the advantages of being simple in implementation method, high in evaluation efficiency and precision, safe, reliable and the like.

Description

technical field [0001] The invention relates to the technical field of road performance evaluation, in particular to an evaluation method and computer equipment for the load transfer characteristics of transverse cracks on continuously reinforced concrete pavement. Background technique [0002] Continuously Reinforced Concrete Pavement (CRCP) is a concrete pavement structure with a sufficient number of longitudinal continuous steel bars and a certain number of supporting transverse steel bars in the panel, and its overall strength and durability are superior to those of Ordinary concrete pavement. The structural stress of CRCP is mainly composed of temperature shrinkage stress and dry shrinkage stress. Due to the large shrinkage of cement concrete materials, the main disease of CRCP is transverse cracks. The increase in the width of the transverse cracks will lead to the weakening of the load transfer capacity. If rainwater seeps into the bottom of the slab through the tra...

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Problems solved by technology

[0005] In summary, the traditional evaluation method based on the deflection load transfer coefficient is not suitable for the evaluation of the load transfer characteristics of CRCP pavement transverse cracks, so it is urgent to provide an evaluation method suitable for evaluating the load transfer characteristics of CRCP pavement transverse cracks, so that It can combine the load transfer mechanism of transverse cracks in CRCP pavement to improve the accuracy and reliability of the evaluation

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