Abstract
A study is carried out on ambient environmental changes caused by excavation of foundation pit of Huzhou lock extension project based on ABAQUS finite element software. The result indicates that the excavation depth of foundation pit has a large impact on ambient environment. The analysis on foundation pit enclosure structures of different excavation depths and the soil horizontal displacement in the rear of retaining wall suggests that the enclosure structure and the soil horizontal displacement in the rear of retaining wall increase gradually with the increase of excavation depth. However, the horizontal displacement of the same excavation depth decreases significantly after a horizontal support of steel pipes is applied. The depth of the enclosure structure has a certain effect on the ambient environment. The enclosure structure and the soil horizontal displacement in the rear of retaining wall decrease gradually with the increase of the insertion ratio of the enclosure structure. The reduction of horizontal displacement is small when the insertion ratio of the enclosure structure is larger than 2.0.
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