ANALYSIS OF HORIZONTAL DISPLACEMENT CHARACTERISTICS DURING ROCK FOUNDATION PIT EXCAVATION
This paper studies the change characteristics of the horizontal displacement of the side wall of the founda-tion pit in the excavation process of rocky foundation pit.Taking a foundation pit project as the case,we analyze the change rule of the horizontal displacement law between the soil body of the foundation pit and the top of the slope in the excavation process of the rocky foundation pit through the combination of numerical simulation and on-site moni-toring data.The results show that the horizontal displacement of the strongly weaved granite rock mass at the top of the slope is large,and the displacement of the lightly weaved granite rock mass is small.With the increase of excava-tion depth,the influence area of the horizontal displacement of the foundation pit gradually increases,and the hori-zontal displacement of the same position of the side wall of the foundation pit also increases,which is approximately the distribution law of large displacement in the middle and small displacement at both ends.The simulation results of the horizontal displacement of the slope top is consistent with the experimental results,proving the reliability of the study.
rock foundation pitslope top displacementpile-anchor supportlaw of deformation