Development of simulation techniques for dynamic soil-structure interaction applied to modeling of the foundation response of Nano-Facilities and synchrotron light laboratories

• Grant number: 13/23085-1
• Support type: Scholarships abroad - Research Internship - Post-doctor
• Effective date (Start): January 01, 2014
• Effective date (End): June 30, 2014
• Field of knowledge: Engineering - Mechanical Engineering - Mechanics of Solids
• Principal Investigator: Euclides de Mesquita Neto
• Grantee: Josué Labaki Silva
• Supervisor abroad: Nimal Rajapakse
• Home Institution: Faculdade de Engenharia Mecânica (FEM). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
• Local de pesquisa : Simon Fraser University, Canada
• Associated to the scholarship: 12/17948-4 - Development of Simulation Techniques for Dynamic Soil-Structure Interaction Applied to Modeling of the Foundation Response of Nano-Facilities and Synchrotron Light Laboratories, BP.PD

Abstract

The present research plan is part of the post-doctoral work in progress, which addresses the development of a series of numerical models to describe the dynamic response of circular or annular foundations interacting with distinct soil profiles. The research plan is motivated by the need to model and understand the dynamic behavior of annular foundations of the kind that are being designed for the new Brazilian Synchrotron Light Source, the Sirius Project. The limits of vibrations amplitudes required for the proper operation of the synchrotron light rings are very demanding and a proper understanding of the underlying foundation dynamics is fundamental to the success of the project. The specific part regarding this BEPE internship comprises the study of the vibration of large pile groups and the dynamics of flexible piled raft foundation. This is a fundamental component of this research program, since currently the leading design of the foundation of a synchrotron light source is characterized by a circular foundation resting on a very large group of piles. A review of the existing literature reveals that an exact analytical formulation of the problem of embedded piles is not available even for the case of static loadings. Current models of the vibration of pile groups often face a computational cost barrier when trying to take into account the interaction between neighboring piles and their surrounding soil. Since deriving accurate, computationally feasible methods to deal with this problem is completely original, basic engineering work, it comprises an important contribution to the understanding of embedded foundation dynamics. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DAMASCENO, D. A.; MESQUITA, E.; RAJAPAKSE, R. K. N. D.; PAVANELLO, R. Atomic-scale finite element modelling of mechanical behaviour of graphene nanoribbons. INTERNATIONAL JOURNAL OF MECHANICS AND MATERIALS IN DESIGN, v. 15, n. 1, p. 145-157, MAR 2019. Web of Science Citations: 0.

DAMASCENO, D. A.; MESQUITA, E.; RAJAPAKSE, R. N. K. D. Mechanical Behavior of Nano Structures Using Atomic-Scale Finite Element Method (AFEM). LATIN AMERICAN JOURNAL OF SOLIDS AND STRUCTURES, v. 14, n. 11, p. 2046-2066, 2017. Web of Science Citations: 0.

LABAKI, J.; MESQUITA, E.; RAJAPAKSE, R. K. N. D. Vertical Vibrations of an Elastic Foundation with Arbitrary Embedment within a Transversely Isotropic, Layered Soil. CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES, v. 103, n. 5, p. 281-313, DEC 2014. Web of Science Citations: 0.