Study On The Failure Mode And Mechanical Properties Of Foundation On Rock Under The Action Of Oblique Load

In China's southwestern mountainous areas,rock foundations with high bearing capacity are commonly used,and independent foundations are widely used because of their economic applicability.It is often encountered in projects that the independent foundations in rock foundations are loaded obliquely,such as in huge thrust slopes.Supporting projects,anti-sliding projects using braced bracing structures,construction projects built on slopes or adjacent to slopes,bridges with diagonal support piers,etc.will be encountered.In addition,in some projects,foundations on rock foundations are both When subjected to a vertical load and a horizontal force,it can also be equivalently loaded obliquely.At present,there are few researches on the stress characteristics and failure rules of the independent foundation in the embedded rock foundation under oblique loading.In this paper,field tests and three-dimensional numerical simulations are used to study the stress properties and failure modes of the foundations in embedded rock masses under oblique loads.The main research contents are as follows:1.Design and carry out an independent 45-degree load test of independent foundations in rock foundations,record test phenomena,collect steel strain gauge data,and analyze crack development;2.Simulate and analyze the basic test process,select multiple sets of stress cloud diagrams for comparative analysis,and compare the experimental analysis results,put forward the theory of compressive stress cores,and further propose the basic pressureexpansion failure mode;3.To compare the research results of independent foundations in rock foundations under vertical loads,and generalize the stress and failure laws of foundations on rock foundations.