Event Details
Dynamic Wave-Soil-Structure Interaction Analysis
Presenter: Mingming Yao - Department of Mechanical Engineering
Supervisor:
Date: Mon, June 9, 2003
Time: 10:30:00 - 11:30:00
Place: EOW 230
ABSTRACT
ABSTRACT
This thesis presents a study on Soil-Structure Interaction (SSI) by analyzing the variance of fundamental frequency and vibration mode of tall buildings through parametric study. There are two methods in modeling the SSI: direct method and substructure method. In this presentation, the substructure method is employed to model the subsystems of unbounded soil and structure separately. The unbounded soil is modeled by using the Scaled Boundary Finite Element Method (SBFEM), an infinitesimal finite-element cell method, which naturally satisfies the radiation condition for wave propagation problems. The structure is modeled using standard finite element method. In this work, a Dynamic Soil-Structure Interaction Analysis program (DSSIA) is used and modified to investigate the SSI effect on tall buildings in the frequency and time domains. A parametric study is carried out subjected to external impulse loading and earthquake loading. The fundamental frequency and the vibration and peak displacement along the height are time domain analysis. The coupling between the building's height, hysteretic damping ratio, soil dynamics and SSI effect are also investigated. The results are compared with building codes, field measurements and other numerical methods.
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For Further Information Please Contact: Mingming Yao (721-4214)