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- W2361384748 abstract "Aiming at the lack of the current determination method for voids in practical engineering applications,in order to accurately quantify the voids beneath cement slab,the determination method was proposed with slab edge-slab center deflection difference and slab corner-slab center deflection difference in the same cement slab for voids.Three-dimensional models were set up using the ANSYS finite element method for voids beneath slab corner and slab edge.And the load was simulated with FWD test results.Thereafter,the deflection values were calculated in slab center,slab corner,slab edge under different void depth,void area and load transfer capacity.And the range of deflection diffidence was obtained.With Yantai-Weihai expressway,detection data for deflection using Falling Weight Deflectometer were statistically analyzed.And the criteria and correction factors of load transfer capacity were given with simulation and samples analysis.The feasibility of criteria was verified by actual test data.It is found that the simulation values and the test values are in good agreement.The accuracy of void determination by lab edge-slab center deflection difference and slab corner-slab center deflection difference are 88.5% and 84.6%,respectively,which meet the engineering requirements.The voids were determined under the same conditions with the elimination of deflection variability." @default.
- W2361384748 created "2016-06-24" @default.
- W2361384748 creator A5053118837 @default.
- W2361384748 date "2010-01-01" @default.
- W2361384748 modified "2023-09-22" @default.
- W2361384748 title "Determination Method and Criterion for Voids by Dynamic Deflection Difference in the Same Cement Slab" @default.
- W2361384748 hasPublicationYear "2010" @default.
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