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The need for construction and creation of underground spaces to provide parking or subway lines is increasing day by day. One of the most important issues during deep excavations is the possible damages or failures caused by that on the adjacent structures. The excavation leads to release of tensions in the soil and consequently, movements in its surrounding zone. On the other hand, one of the most complex and sensitive tasks of geotechnical engineer is to predict, control and prevent from damage caused by soil movement in excavation. The damage and failure of adjacent structures is mainly occurred due to the occurrence of tensile strain in the walls and other elements which leads to cracks with different dimensions and widths. In present article, it has been tried to investigate the effect of different soil parameters on performance and failure (damage) level of the structure adjacent to an urban excavation with depths of 14 meters in sandy soils through Hardening Soil Behavior Model of Plaxis 3D Foundation Software. In this excavation, the soldier structure has been used in the form of reciprocal bracing method and the results of this paper shows the effect of each soil parameters on the performance level of the adjacent structure. Based on these results, it is observed that the Cohesion, Young Moduls and Internal friction angle of the soil have the greatest effect on the performance level of the adjacent structure.

Modeling variables of reciprocal bracing excavation method on the performance of adjacent structure