Seismic Analysis of Municipal Solid Waste Landfill in India

This paper presents, unit weight, shear wave velocity, strain-dependent normalized shear modulus reduction and material damping ratio relationships for Mavallipura landfill are developed based on field testing, laboratory measurements and also validated using semi-empirical methods. In addition, one-dimensional seismic response analysis by an equivalent linear method for Mavallipura landfill, Bangalore using the software like SHAKE2000 and DEEPSOIL. Results indicated that the MSW landfill has less shear stiffness and more amplification due to the loose filling and damping, which need to be accounted for seismically safe MSW landfill design in India.

Verification of Seismic Safety Evaluation Program LSSRLI-1 Using Exact Solution

Seismic safety evaluation was commonly carried out using an equivalent linear method LSSRLI-1, proposed by Xiaojun Li in 1989, which greatly promoted the development of earthquake resistant engineering of China, for it solved the input problem of earthquake response analysis of building structures. The current situation of seismic response analysis for deposits is described first. Then, a series of deficiencies for the analysis program LSSRLI-1 found in the practice are represented. The exact solution based on the wave theory is used to verify the LSSRLI-1 results without iteration. Comparison show that LSSRLI-1 should be further perfected due to its deviation from exact values, especially when the soil is soft.