MECHANICAL PERFORMANCE OF UHPC-NSC COMPOSITE SLAB CULVERT
The paper proposed an ultra-high performance concrete-normal strength concrete (UHPC-NSC) composite slab culvert structure with a span length of 8m.The structure with higher load-carrying capacity and crack resistance can adapt to the larger span and the higher filling height without obviously increasing the project cost.The inversed π or T-type UHPC beam is employed as the template for casting the top-layer normal strength concrete, which results in convenient and quick construction.The paper introduces the design details of the composite slab culvert and implements a full scale model test and FEM to verify the effectiveness of the composite structure in practical engineering.The study demonstrates that the UHPC-NSC composite slab convert with a span length of 8m and a filling height of 2m has outstanding load-carrying capacity.In its serviceability limit state, the crack width of the structure can be limited in the ranges of 0.05mm, which has little effect on UHPC permeability and accordingly steel fibre corrosion.The composite slab culvert with 8m span length is now under construction.
Composite slab culvert UHPC-NSC Full-scale model Experimental test FEM
Yinan Jia Tianshen Zeng Mian Li Banfu Yan
College of Civil Engineering, Hunan University, P.R.China Guangdong Gaoen Expressway Company, Guangzhou, P.R.China Key Laboratory of Large-span Bridge Construction Technology, Ministry of Communications, Wuhan, P.R.
国际会议
福州
英文
721-729
2018-11-07（万方平台首次上网日期，不代表论文的发表时间）