Continuously Reinforced Concrete Pavement Structure Thermal Stress Analysis And Crack Growth Research

This text makes the simple introduction to development and research of rigid pavement athome and abroad, describes the formulation and influencing factor of the CRCP. It explainsthe theoretical basis and calculation process using finite element method to solve practicalengineering problems based on elastic layer theory.On the basis of existing research result, it makes the solid model of CRCP though finiteelement software ANSYS. Including nonlinearity of the concrete and the slippage betweenfixture and concrete, it gets the stress and displacement field of the plane structure whichsuffered temperatures load and analysis the variation of the stresses and displacementschanged with the location. During the simulation, the laps of the transverse and longitudinalreinforcement were not considered.The2kinds of cracking and expansion model was established to characterize single crackthrough cohesive zone model which was widely used in the simulation of material injury inthe2nd part of this article, reinforced and not reinforced. It obtains the stress anddisplacement field after cracking and expanding. The result shows around the reinforced barnear the crack, stresses of the concrete rise up sharply, and the bar can reduces the crack widtheffectively and enhances the integrity of the plane.