Special Isotope Separation Laboratory (SISL): Structural and Thermal Analyses and Design for Laser-Support Structures.

摘要

The SISL (Special Isotope Separation Laboratory) forms part of the Advanced Isotope Separation Facility in Building 482. It has two main areas, namely, the Copper Vapor Laser (CVL) area and the Dye Corridor (DC) area. The CVL walls are perpendicular to the DC walls. The former are free-standing, whereas the latter are proposed to be covered by a ceiling which will act as a fire barrier. The Engineering Mechanics Section of NTED was requested by the SISL group to analyze the CVL and DC walls for static load, seismic load, ambient noise, and thermal response. This report presents the results of the analyses and a preliminary design with recommendations. For the CVL walls, both steel frame and reinforced concrete options were considered. The reinforced concrete wall was analyzed as a full-length, free-standing, 18'' thick and 17' high wall with different combinations of boundary conditions. It was also analyzed as a wall consisting of 14' segments, fixed at the base. The DC walls are analyzed as 18'' thick, lightweight concrete slab continuous over all four walls. The walls are assumed to be fixed at the floor and hinged to the ceiling slab. It is also realized that the CVL wall, being perpendicular to the DC walls, would contribute to the rigidity of the latter if they are connected at their junction. Therefore, a separate set of analyses is performed for a DC wall-slab assembly hinged to a 7' long piece of CVL wall. (ERA citation 08:033179)