Method for determining control index of double-layer continuous reinforced concrete pavement reinforcement ratio

Abstract

The invention discloses a method for determining the control index of a double-layer continuous reinforced concrete pavement reinforcement ratio. The method is characterized in that the method comprises the following steps of step one, initializing the reinforcement ratio of the upper and lower layers of steel bars and the positions of the reinforcement; step two, according to the calculation formula of a transverse crack width variation value delta bj under different reinforcement positions, calculating the transverse crack width variation value delta bj under different reinforcement positions; step three, according to the calculation formula of the transverse crack width variation value delta b'j under different reinforcement ratios, calculating the transverse crack width variation valuedelta b'j under the different reinforcement ratios; step four, according to the delta bj and delta b'j values, determining a double-layer CRCP transverse crack width control value bj, wherein the double-layer CRCP transverse crack width control value bj is the double-layer CRCP reinforcement ratio control index. According to the method, the reinforcement ratio control index can be used for the reinforcement ratio design, which has important significance for scientifically and rationally designing the double-layer CRCP reinforcement ratio, the reinforcement ratio is an important index for determining the performance and economy of the double-layer CRCP, and the method has significant social and economic benefits.

Description

technical field [0001] The invention belongs to the field of road engineering and relates to a method for determining the control index of the reinforcement ratio of double-layer continuously reinforced concrete pavement. Background technique [0002] Two-layer Continuously Reinforced Concrete Pavement (Two-layer Continuously Reinforced Concrete Pavement, referred to as double-layer CRCP) is designed and arranged for double-layer reinforcement of longitudinal reinforcement in the continuous reinforced concrete (CRC) slab from the perspective of reinforcement ratio. At the same time, it is equipped with a long-life concrete pavement structure with a certain number of transverse steel bars. [0003] The research on the reinforcement design of double-layer CRCP has the characteristics of complexity, comprehensiveness and system. Under the dual action of natural environment and vehicle load, the research on the internal mechanical response of the double-layer CRCP pavement struc...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to develop a method for determining the control index of the reinforcement ratio of double-layer continuously reinforced concrete pavement. This method can not only solve the problem that the current code does not have a control index of the reinforcement ratio of double-layer CRCP, but also The determined reinforcement ratio control index can be used in the design of the reinforcement ratio, which is of great significance to the scientific and rational design of the double-layer CRCP reinforcement ratio, and can also fill the gap in the current industry specification on the design of the double-layer CRCP reinforcement ratio

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