A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Failure Mechanisms of Pile-Supported Port Building in Liquefiable Sloping Ground During Earthquake
Failure and/or damages of pile-supported structures in potentially liquefiable soil are still noticed after major earthquakes in spite of designing with the latest standard code of practices. At present, pile foundation in liquefiable soil is designed based on bending failure mechanism due to inertial or kinematic loading neglecting the dynamic effects of axial load. However, recent research suggested that pile foundations in liquefiable soil may be failed due to structural failures (shear, bending, and buckling), geotechnical failure (excessive settlement), or combination thereof depending upon the thickness and position of liquefiable crust. Bending and buckling are two distinct approaches of design. Buckling criteria will not be fulfilled automatically by designing the pile against bending criteria. In the present study, a numerical study based on beam on nonlinear Winkler foundation (BNWF) model has been carried out using open-source finite element-based code, OpenSees, to investigate the probable failure mechanism of Kandla Port building during 2001 Bhuj earthquake. The 22.0 m high pile-supported six-storeyed RCC frame building resting on liquefiable sloping ground was tilted towards seaside after Bhuj earthquake. Nonlinear ground response analysis of the port site has been performed to assess the liquefaction susceptibility. The seismic behaviour of piles under liquefiable condition has been examined using pseudo-static approach. The alternate failure mechanisms of pile failure during earthquake that are not addressed in standard code of practice have been studied. On the basis of numerical study, it has been concluded that apart from bending, the piles are prone to other failures, i.e. settlement and buckling in liquefiable sloping ground.
Failure Mechanisms of Pile-Supported Port Building in Liquefiable Sloping Ground During Earthquake
Failure and/or damages of pile-supported structures in potentially liquefiable soil are still noticed after major earthquakes in spite of designing with the latest standard code of practices. At present, pile foundation in liquefiable soil is designed based on bending failure mechanism due to inertial or kinematic loading neglecting the dynamic effects of axial load. However, recent research suggested that pile foundations in liquefiable soil may be failed due to structural failures (shear, bending, and buckling), geotechnical failure (excessive settlement), or combination thereof depending upon the thickness and position of liquefiable crust. Bending and buckling are two distinct approaches of design. Buckling criteria will not be fulfilled automatically by designing the pile against bending criteria. In the present study, a numerical study based on beam on nonlinear Winkler foundation (BNWF) model has been carried out using open-source finite element-based code, OpenSees, to investigate the probable failure mechanism of Kandla Port building during 2001 Bhuj earthquake. The 22.0 m high pile-supported six-storeyed RCC frame building resting on liquefiable sloping ground was tilted towards seaside after Bhuj earthquake. Nonlinear ground response analysis of the port site has been performed to assess the liquefaction susceptibility. The seismic behaviour of piles under liquefiable condition has been examined using pseudo-static approach. The alternate failure mechanisms of pile failure during earthquake that are not addressed in standard code of practice have been studied. On the basis of numerical study, it has been concluded that apart from bending, the piles are prone to other failures, i.e. settlement and buckling in liquefiable sloping ground.
Failure Mechanisms of Pile-Supported Port Building in Liquefiable Sloping Ground During Earthquake
Lecture Notes in Civil Engineering
Muthukkumaran, Kasinathan (editor) / Ayothiraman, R. (editor) / Kolathayar, Sreevalsa (editor) / Mallick, Monirul (author) / Mandal, Kalyan Kumar (author) / Sahu, Ramendu Bikas (author)
Indian Geotechnical Conference ; 2021 ; Trichy, India
Soil Dynamics, Earthquake and Computational Geotechnical Engineering ; Chapter: 46 ; 539-550
2023-01-01
12 pages
Article/Chapter (Book)
Electronic Resource
English
Deformation Mechanisms of Stone Column-Improved Liquefiable Sloping Ground Under Earthquake Loadings
| British Library Conference Proceedings | 2022
Response of sloping ground with liquefiable materials during an earthquake: a class A prediction
| British Library Conference Proceedings | 2005
Prediction of Lateral Spreading Displacement on Gently Sloping Liquefiable Ground
| British Library Conference Proceedings | 2017