Wedge Flexible Slab Treating Method at Bridge Approach

A new treating method for the bump at bridge-head is introduced,named wedge flexbile slab.The reinforcement mechanic,technical characteristic,structural type and construction technology are illustrated in detail.A engineering practice is showed that the wedge flexbile slab is used to treat the bump at retailing backwall of the sand loess in the Jin-Wang Expressway.The engineering practices show that the wedge flexible slab can improve remarkably the integrity and strength of sand loess filling,cooperate the settlement difference between the abutment and embankment and prevent the bump diseases.In addition,the engineering price is decreased greatly and the economic benefit is prominent.