Research on the concrete pavement void and load transfer mechanism
ZENG Sheng~1,CHENG Ming-xian~2(1.Changsha University of Science and Technology, Changsha 410076,China;2.Communication Department, Changsha 410001, China)
Based on the load bearing model of the subgrade, this paper analyzes the load bearing principle of the subgrade under the pavement void status, and establishes the anti-analyses method of Winkler subgrade under the pavement void status. In addition,on the basis of the load transfer property of both loading slab and edge slab, calculation expression of concrete board synthesized load transfer index is given. Combined with the engineering practice, according to the test of multilevel load in void of different pavement structural parameters, the mutual impact and mechanism of action between void and load transfer ability under different levels load are studied, which offers the reference to pavement performance evaluation and reconstruction.