CONSOLIDATION ANALYSIS OF COMPOSITE GROUND WITH GRANULAR COLUMNS CONSIDERING TEMPERATURE EFFECT AND VARIABLE LOAD

Abstract

Aiming at the consolidation problem of composite ground with granular columns composite foundation, the influences of temperature effect and variable load of composite foundation are considered, the consolidation calculation model of composite foundation is established, and the analytical solution of composite foundation under temperature effect, variable load and consolidation deformation. The correctness of the solution is verified by comparing the degradation calculation results with the existing analytical solution calculation results. The curve of consolidation degree of composite ground with granular columns under the influence of different factors is drawn by example analysis. The results show that with the increase of temperature, the consolidation rate of the composite foundation is accelerated, but the influence of temperature on the foundation soil becomes smaller and smaller. As the temperature increases, the greater the maximum reached at the end of the constant velocity loading stage, the faster the rate of excess pore pressure dissipation. The longer the loading time, the greater the influence of temperature on the excess pore pressure