Structure–soil–structure interaction: Literature review

Two-dimensional SH-type vibration of several shear walls erected on an elastic, homogeneous, half-space has been studied. The choice of the cylindrical coordinate system, suitable for analysis of rigid foundations with semi-circular cross section, has lead to the exact infinite series solution, which is ideal for the analysis of the physical nature of this problem and its dependence on several key parameters.

It has been shown that the presence of neighboring buildings may change the nature of the single soil-structure interaction problem appreciably and that scattering, diffraction, and interference of waves from and around several foundations with the incident SH waves can lead to significant shielding, as well as amplification of input motion for any of the buildings in a group. The effects of relative size of two, three and several foundations and their separation distances have been studied and presented in some detail.

Two-dimensional, antiplane, building-soil-building interaction for two or more buildings and for incident planet SH waves

The production and the supply of high quality laboratory animals have fundamental importance for the accomplishment of vanguard scientific research, with reproducibility and universality. The quality of those animals depends, largely, of the available facilities for their production and lodging, to assure the demanded sanitary control and animals’ welfare, in agreement with the ethical principles that control the activity. The facilities also have to fill out other requirements, such as: the functionality of the environments to make possible the suitable and efficient handling of the animals, facilitating the execution of the routine activities; the respect to ergonomic principles to provide a safe environment and the operators’ well being. The facilities design is of vital importance so that the mentioned requirements can be reached. The project of the Nuclear and Energy Research Institute (IPEN) Animal House Facilities was accomplished in the year of 1964. However, by that time there were not the current recommendations with respect to the sanitary, genetic and environmental controls. The facility was planned with the objective of being a production unit and a local for keeping of defined animals from sanitary, genetic and environmental point of view. Nevertheless, the original unit drawing presents an unsuitable distribution of the area where animals are stocked and also different activities are performed. The Animal House Facilities occupy an area of 840 m, with one pavement, where the production areas and the stock of original animal models of the own Institution are distributed, as well as the maintenance of animals from other national or foreigner institutions. It supplies rats and mice for biological tests of radiopharmaceutical lots, produced in IPEN, before they be sent to hospitals and clinics spread out in Brazil, for use in Nuclear Medicine. It also supplies rats and mice for tests of odontological materials, for tests with growth hormones and for researches of new pharmaceuticals and radiopharmaceuticals, among others applications. Many of the animals models produced in IPEN are unique in Brazil and they constitute, therefore, an important patrimony that should be preserved. This paper describes the activities that have been executed in Animal House Facilities of IPEN, including the refurbishment project and the adaptation of the facilities.

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Instituto de Pesquisas Energéticas e Nucleares

An efficient discrete model for predicting the dynamic through-the-soil interaction between adjacent rigid, surface foundations supported by a homogeneous, isotropic and linear elastic half-space is presented. The model utilizes frequency-independent springs and dashpots, and the foundation mass, for the consideration of soil–foundation interaction. The through-the-soil coupling of the foundations is attained by frequency-independent stiffness and damping functions, developed in this work, that interconnect the degrees of freedom of the entire system of foundations. The dynamic analysis of the resulting coupled system is performed in the time domain and includes the time lagging effects of coupled dynamic input due to wave propagation using an appropriate modification of the Wilson-θ method. The basic foundation interaction model is also extended to the evaluation of coupled building-foundation systems. © 1998 John Wiley & Sons, Ltd.

Discrete model for dynamic through‐the‐soil coupling of 3‐D foundations and structures

https://accedacris.ulpgc.es/jspui/bitstream/10553/16238/3/Padron_Dynamic_Structure.pdf

Dynamic structure soil structure interaction between nearby piled buildings under seismic excitation by bem-fem model

Soil-structure interaction of nuclear reactor structures considering through-soil coupling between adjacent structures

The profiles of local vapor phase parameters over the cross section were measured in the inclined subcooled boiling in a concentric annulus with a uniformly heated inner tube. Two-conductivity probe technique was applied to measure the local values of interfacial parameters such as void fraction and interfacial area concentration. Experiments were conducted for five angles of inclination (0&deg; (vertical), 15&deg;, 30&deg;, 45&deg;, 60&deg;) and flow conditions were controlled by mass flux, heat flux and inlet subcooling for each inclination. Based on the measurements, the influences of channel inclination and flow conditions on the profiles were investigated for understanding those effects on the internal phase distribution of inclined boiling flow. 

T.H. Lee

Papers

Soil-structure interaction of nuclear reactor structures considering through-soil coupling between adjacent structures

Experimental study on phase distribution in inclined subcooled boiling annulus