Analysis of Deformation Characteristics of New Type Masonry Slope Protection Surfaces with Overhanging Corners Under Wave Action

Abstract:

To study the influencing factors of the stability of the slope surface of the river channel, on the basis of the traditional interlocking blocks, the double plan-ting holes and the eaves structure are proposed to be added to enhance the ecological function of the block slope protection. Taking the riverbank protection project of the Suhe River in Juxian County as an example, the stability of the slope surface composed of the interlocking concrete blocks under different protection conditions is analyzed. The accumulation morphology of sand particles in the planting holes is simulated by PFC software. The results show that when the opening rate of the new type of blocks is set at 16% and the single hole size of the planting holes is 140 mm×96 mm, the design width for the eave structure is 3.6 to 4.7 cm, which can effectively reduce soil and water erosion in the planting holes. Under the condition that the material strength of the blocks is sufficient, the optimized design significantly enhances the wave-breaking and wave-reducing capacity of the slope surface composed of the blocks with the eave structure. The three-dimensional solid modeling analysis is carried out using ABAQUS software. The stress cloud diagrams and displacement cloud diagrams of the blocks under the wave counter-pressure in different protection conditions are compared and analyzed, showing that by choosing crushed stone as the slope pad layer and laying the block flanges horizontally, the overall stability of the slope surface layer can be enhanced. Combined with the eave design, a stable and ecological slope protection effect can be achieved.