Numerical assessment of behavior of soil-nailed wall

Authors

1 Assistant Professor, Department of Civil Engineering, Eshragh Institute of Higher Education, Bojnourd, Iran

2 Department of Civil Engineering, Toos Institute of Higher Education, Mashhad, Iran

10.22034/ceej.2024.56139.2249

Abstract

Today, due to population growth in urban areas, the construction of high-rise buildings has expanded. The construction of high-rise buildings requires the creation of floors on the basement level and the need to design and carry out excavation in itʼs ground. In current study, firstly the soil-nailed wall of the Seattle area of Washington was modeled by PLAXIS 2D software. After validating the numerical model, the effect of adjacent surcharge distance from the excavation edge on the static and seismic performance of the soil-nailed wall was investigated. The results of numerical analysis indicated that the maximum value of shear force of the wall is created in the place of nails, and with the increase of depth, the value of shear force has increased, which was proportional to the distribution of the soil lateral pressure relative to the wall, which is in triangular. The presence of nails prevent the movement of the wall towards to the excavation and as a result, the wall bending moment around the head of the nails increases. The results of the analyses showed that by changing the distance of the surcharge from the excavation edge, the values of the force component in the nails and as a result, the stability of the wall are affected. In addition, in foundations close to the excavation, the issue of differential settlement caused by the location of wedge failure is a very important parameter and should be considered by designers.

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Journal of Civil and Environmental Engineering

Articles in Press, Accepted Manuscript
Available Online from 12 February 2024

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