Numerical Model for Capturing the In-Plane Seismic Response of Interior Metal Stud Partition Walls.

摘要

The study investigates methods to reduce floor acceleration demands in buildings with structural fuses. A strategy is proposed that combines passive hysteretic energy dissipation devices (PED) with isolated floors in rooms where acceleration-sensitive equipment is located. Two kinds of isolated floor systems were studied. The first isolated floor system used concrete ball-in-cone (BNC) isolators with rubber and polyurethane spherical solid balls, instead of steel balls, as the rolling balls between the top and bottom concrete bearing plates. A multi-directional spring unit was used as the isolator in second isolated floor system. Characterization tests were conducted on these two isolated floor systems, from single isolator to complete system; and models of single-degree-of-freedom (SDOF) structural fuse frames with these two isolated floor systems were developed. Studies were then conducted to determine the preferred parameter values to be used in design, and to establish how the combined systems behave under different mass ratios of the isolated floor system to the base SDOF structural fuse structure and the design of the isolated floor system on top were developed for each kind of isolated floor system.