A study of 3D modelling the vibrations induced from grab shock at the Metro Line 3 project in Hanoi

Dang, Hong-lam; Van-quang, Nguyen; Vo, Thi-hong-minh

Journal of Materials and Engineering Structures
Volume 9, Numéro 4, Pages 557-562
2022-12-30

A Study Of 3d Modelling The Vibrations Induced From Grab Shock At The Metro Line 3 Project In Hanoi

Authors : Dang Hong-lam . Van-quang Nguyen . Vo Thi-hong-minh .

Abstract

The density of high-rise building is increasing over recent years in urban city. Construction activities, particularly piling processes, D-wall excavation, are paid attention due to ground borne vibrations. The impact of vibrations induced from construction activates on existing buildings is discussed in the past and so on. However, there is rarely study their vibrations in Vietname specially in construction activities such as grab shocking. Continuing the analytical and experimental studies of the grab shocking in the Metro Line 3 project in Hanoi, 3D modelling of vibrations induced from the grab shocking on the existing building is carried out by Plaxis software. The hardening soil model is used and the acceleration of the grabin the bentonite slurry is considered in the model. The comparison between the analytical solution and the 3D simulation is highlighted in the paper to show the accuracy and robustness of the 3D modeling. This study is applied to investigate the vibrations on existing building in the Metro Line 3 project and to control the grab drop length as well as the distance of existing building to the vibration source.