Seismic performance of mat and grid foundations on a soft fine-grained soil underlying an eight-story building

Jalili, Javad; Moosavi, Mojtaba; Askari, Farajdollah; Marghaiezadeh, Azadeh

doi:10.48303/jsee.2024.2042496.1126

Seismic performance of mat and grid foundations on a soft fine-grained soil underlying an eight-story building

Articles in Press

Document Type : Research Article

Authors

Javad Jalili ¹

Mojtaba Moosavi ²

Farajdollah Askari ³

Azadeh Marghaiezadeh ⁴

¹ International Institute of Earthquake Engineering and Seismology

² Assistant Professor, International Institute of Earthquake Engineering and Seismology

³ Associate Professor, International Institute of Earthquake Engineering and Seismology

⁴ Research Expert, International Institute of Earthquake Engineering and Seismology

10.48303/jsee.2024.2042496.1126

Abstract

In cases of large deformations of the ground underlying a structure, mat and grid foundations are two options to reduce probable differential settlements, due to their rigidity in the perpendicular directions and their relatively larger area compared with single spread foundations. A case study of large settlements of an 8-storey structure resting on soft saturated fine-grained soil due to seismic loading is numerically investigated herein. It is shown that performance of grid foundation is better or identical to mat foundations, which makes it an alternative with probably a more economical option to be preferred to mats in the design of foundations in areas of high seismicity.

Keywords

Mat foundation

grid foundation

numerical analysis

seismic loading

Subjects