Abstract
According to the stress characteristics of pier foundation, the research designs a structure of pier foundation for variable cross-section and post-installed fastening by spiral spray indentation, and its mechanical characteristics and construction technology is analyzed. By means of finite element analysis, structure of pier foundation for variable cross-section and post-installed fastening by spiral spray indentation and conventional pier foundation structure in vertical compressive bearing capacity and uplift bearing capacity of differences are analyzed. It is found that the new design structure is better than the conventional pier foundation, and the vertical load-bearing capacity and the load bearing capacity are improved, and the new design structure engineering benefits are verified.
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