Experimental Investigation of the Bearing Performance and Failure Characteristics of Double-Row Pile-Slab Structures in Steep Mountainous Areas

Considering the pile-slab subgrade project of Hangzhou-Huang Shan Passenger Dedicated Line as basis, this paper conducts a 1:10 large-scale indoor model test for horizontal bearing capacity structure in steep mountainous areas to study distribution stress, soil pressure and structural deformation analyze failure mode slope. The research shows that when with double-row is subjected loading slope section, steel bars pile body above sliding surface are compressed, below under tension. With increase load, stress bar remains basically unchanged or steady finally sharply increases. plate dominated by displacement, displacement reaches 7.25 mm broken. In addition, warping inner high outer low occurs. When load 157 kN, shallow damage local collapse occur, transverse diagonal cracks occur at top near pile. During test, always deforms more than slope, overall stability good. suitable sections where remaining force less 770 kN/m (equivalent length 79.123 m).