Experimental analysis of corbel of pile slab subgrade

Abstract In order to realize the reasonable design of new type pile slab subgrade, this study, relying on the reconstruction and expansion project of Lintou Longxi Interchange Section of G5011 Wuhe expressway, constructs a pile slab subgrade model with 15 holes and each hole is 6m. The weakest section of the corbel is determined by checking the mechanical performance of the corbel section, and the mechanical performance of the bracket of the new vertical limited expansion joint of the pile slab subgrade under the most unfavorable load is obtained by the full-scale model. Based on the separation modeling method, the nonlinear analysis of the full-scale specimen under the test loading condition with the load displacement curve in good agreement with the measured results is achieved. Combined with the static performance test of full-scale components, it is verified that the pile slab subgrade has good bearing capacity, which can be applied to engineering.