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| Title: | A STUDY ON SEISMIC STABILITY OF MSW LANDFILLS |
| Authors: | RAMAKRISHNA, ANNAPAREDDY VENKATA SIVA |
| Keywords: | Municipal Solid Waste
MSW
CSIR-CBRI
2017
M.Tech Thesis
Retaining walls
SEISMIC TRANSLATIONAL FAILURE ANALYSIS OF MSW LANDFILLS
INHOMOGENEITY
Parametric Study
SEISMIC STABILITY |
| Issue Date: | 31-Jul-2017 |
| Abstract: | Rapid population growth and urbanization in the developing countries like India had increased the municipal solid waste (MSW) generation in enormous quantities. Engineered landfill is a common technique for the disposal of municipal solid waste, with least damage to the environment as well as public health. As the modern landfills are capable of generating energy from waste, the study on their stability got importance in the recent decades. The failure of landfill causes a severe damage to the environment and public health. A very limited number of numerical and analytical studies are available on the stability of MSW landfills under static and dynamic conditions.
In the present study, robust closed form solutions are developed to compute the acceleration profiles, factor of safety and yield acceleration coefficient of MSW landfills resting on different types of foundation. The effect of inhomogeneity of landfill material is also considered in the present study. In the present study, both linear and equivalent linear analyses are carried out. The acceleration (surface/input) ratios computed in the present study are in good agreement with the DEEPSOIL results. From parametric study, it is observed that the landfill is vulnerable to seismic damage for low frequency input motions. At low frequencies the seismic inertia force at all depths are in phase. The seismic force acting in landfill mass is reducing at higher frequencies. At higher frequencies landfill mass is entering into higher modes of vibration, where some portion of landfill is moving in one direction and the remaining portion is moving in opposite direction. The maximum shear strain generated at low frequencies is significantly higher compared to high frequencies.
The results from present study also showed that the foundation material has a significant effect on the seismic stability of MSW landfills. Obtained results are compared and validated with the similar existing literature. Present method is further validated against a welldocumented failure case history under static condition. In addition, an extensive parametric study are carried out to know the effect of all other parameters on the stability of MSW landfills |
| Description: | Thesis Submitted to AcSIR for the Award of Degree of
MASTER OF TECHNOLOGY
in
BUILDING ENGINEERING AND DISASTER MITIGATION |
| URI: | http://hdl.handle.net/123456789/1638 |
| Appears in Collections: | M.Tech Thesis
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