Design method for preventing buckling deformation of cement concrete pavement slabs of airport

Abstract

The invention discloses a design method for preventing buckling deformation of cement concrete pavement slabs of an airport. The constructed airport pavement is formed by splicing a plurality of pavement slabs, and the pavement slabs are rectangular cement concrete plates. The design method comprises the following steps that the free buckling curvature height wqi is determined; the buckling height wnj under mutual action of adjacent slabs is determined; the buckling height wsj under the action of self gravity is determined; the buckling deformation amount is calculated, the buckling deformation amount wi of the pavement slabs is worked out according to the formula that wj= wqj+ wsj+ wnj; the thickness of each pavement slab is determined, and the value of the thickness h of each pavement slab when wj= c is solved and recorded as hc; the c is a buckling deformation threshold and c= 0 or cs, and the cs is the maximally permitted buckling deformation amount of the pre-designed pavement slabs; the designed thickness hs of each pavement slab is determined according to the worked out hc, and hs<=hc. The design method is simple in step, reasonable in design, convenient to achieve, good in use effect and capable of resolving the problem of buckling deformation of the cement concrete pavement slabs under the action of high temperature.

Description

technical field [0001] The invention belongs to the technical field of cement concrete pavement design, and in particular relates to a design method for preventing warpage and deformation of cement concrete pavement of an airport. Background technique [0002] Under the action of factors such as ambient air temperature and solar radiation, the temperature inside the cement concrete pavement will be distributed non-uniformly. When the temperature of the top surface of the road panel is lower than the temperature of the bottom of the board, the surroundings of the road panel will be lifted upwards, forming a "pot" shape deformation with high surroundings and low middle. For example, under the action of non-uniform temperature distribution for a long time, the road panel will form permanent warping deformation. The permanent warping deformation of the pavement panel will deteriorate the flatness of the pavement surface, and the warping of the panel corners of the pavement pane...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an airport cement concrete pavement anti-warping deformation design method for the deficiencies in the above-mentioned prior art. The method has simple steps, reasonable design, convenient implementation, good use effect, and can effectively solve Warpage and deformation of cement concrete pavement slab under the action of temperature

Images