The Capacity of Reinforced Concrete Squat Shear Walls Under Seismic Loading for the Design of the ACR-1000~™ NPP

摘要

Reinforced concrete squat shear wall is one of the major structural elements in nuclear facilities. There are no specific code provisions for squat shear walls for the design of nuclear structures in Canada [1]. The goal of this paper is to review the international design code provisions for conventional and nuclear buildings and, as a result, to propose the appropriate provision for the ACR-1000 NPP design. The reviewed codes for conventional buildings are: Canadian [2], US [3], European [4], [5] and French [6]. Concerning nuclear facilities, the US code [7] and the ASCE Standard [8] have been reviewed. To illustrate the conservatism of the codes, some test results on the squat shear walls are presented [9], [10], [11], [12] with respect to the governing parameters, as well as previous comparisons [13]. It is shown in this paper that the level of conservatism of each code prevision can vary significantly with the variation of the governing parameters. Following this code comparison and taking into account specificities of nuclear structures, the proposeddesign provision for squat shear walls in ACR-1000 NPP design is presented.