TY - JOUR
T1 - Effects of twin excavations with different construction sequence on a brick masonry wall
T2 - 3D finite element approach
AU - Ali Soomro, Mukhtiar
AU - Liu, Kai
AU - Ali Mangnejo, Dildar
AU - Mangi, Naeem
N1 - Funding Information:
The authors would like to acknowledge the financial support provided by Higher Education Commission (HEC), Islamabad under the project “Faculty Development Program” for Pakistani Universities
Publisher Copyright:
© 2022 Institution of Structural Engineers
PY - 2022/7
Y1 - 2022/7
N2 - The effects of deep excavations on existing brick masonry walls have been extensively investigated, but the influence of twin excavations on brick masonry wall is seldom reported in the literature. In this study, a 3D numerical parametric analysis using an advanced hypoplastic soil model was carried out to investigate the response of an existing isolated brick masonry wall due to twin excavations with different construction sequences in dry sand. Three different numerical simulations were conducted. In first case, twin excavations (which were perpendicular to the brick masonry wall) were simulated one after the other. In second case, the first excavation was parallel and the second excavation was perpendicular to the brick masonry wall. In third case, analysis was performed with the change of construction sequence of twin excavations in which the first excavation and the second excavation were carried out perpendicular and parallel to the brick masonry wall, respectively. The computed results revealed that the maximum settlement after twin excavation in the second case is 37% larger than that in third case. The twin excavations (perpendicular to the masonry wall) resulted in the hogging deformation profile causing the cracks at the top of the wall.
AB - The effects of deep excavations on existing brick masonry walls have been extensively investigated, but the influence of twin excavations on brick masonry wall is seldom reported in the literature. In this study, a 3D numerical parametric analysis using an advanced hypoplastic soil model was carried out to investigate the response of an existing isolated brick masonry wall due to twin excavations with different construction sequences in dry sand. Three different numerical simulations were conducted. In first case, twin excavations (which were perpendicular to the brick masonry wall) were simulated one after the other. In second case, the first excavation was parallel and the second excavation was perpendicular to the brick masonry wall. In third case, analysis was performed with the change of construction sequence of twin excavations in which the first excavation and the second excavation were carried out perpendicular and parallel to the brick masonry wall, respectively. The computed results revealed that the maximum settlement after twin excavation in the second case is 37% larger than that in third case. The twin excavations (perpendicular to the masonry wall) resulted in the hogging deformation profile causing the cracks at the top of the wall.
KW - Brick masonry wall
KW - Cracks
KW - Parametric study
KW - Twin excavations
UR - http://www.scopus.com/inward/record.url?scp=85130592238&partnerID=8YFLogxK
U2 - 10.1016/j.istruc.2022.05.060
DO - 10.1016/j.istruc.2022.05.060
M3 - Journal article
AN - SCOPUS:85130592238
SN - 2352-0124
VL - 41
SP - 866
EP - 886
JO - Structures
JF - Structures
ER -