An experimental study on seismic responses of multifunctional vibration‐absorption reinforced concrete megaframe structures

Abstract

SUMMARYTwo models are tested on a shake-table. One of the models is a normal reinforced concrete megaframe structure and the other is a multifunctional vibration-absorption reinforced concrete megaframe structure in which the laminated rubber bearings are placed between the major frame and the minor frames. Two earthquake motions (the El Centro wave and the Taft wave) are used during the test. This paper presents the dynamic characteristic, the seismic responses and the failure mechanism of these two models under varying peak acceleration levels for each of the earthquake motions. The test results demonstrate that the aseismic behavior of a multifunctional vibration-absorption reinforced concrete megaframe structure is much better than that of a normal reinforced concrete megaframe structure.

Shaking table model test and FE analysis of a reinforced concrete mega‐frame structure with tuned mass dampers

“…Such a system has the following advantages: (a) efficient and economic use of resources by incorporating different materials for the mega-frame and the substructures, (b) flexibility to meet special architectural or functional requirements, (c) better structural performance and integration and (d) quicker and easier construction. Although very limited theoretical and experimental research has been conducted in this area (Feng and Mita, 1995;Lan et al, 2004;Shu et al, 2005;Zhang et al, 2005;and Kim and Jung, 2013), existing research outcomes indicate that the mega-frame structure has outstanding seismic performance. Nevertheless, limited study has been conducted to investigate how to efficiently control the vibration of mega-frame structures subjected to earthquakes.…”

Dynamic Reliability Analysis of Mega-Sub Isolation System Under Random Ground Motion

“…Recently, some studies about the optimal parameters between the substructure and megastructure have been conducted in order to achieve the best performance. Lan et al [3] proposed a multifunction mega-sub isolation structure, which has the function of the mass dampers and base isolation as well as damping energy dissipation. Qin et al [4,5] and Zhang et al [6,7] investigated the control performances of the mega-sub controlled structure with different control strategies.…”

Time History Analysis of Pulsating Wind Vibration for Semi-rigid Mega-frame Suspended Structure

“…High-rise building is the product of social demand, economic prosperity and technological advancement [1,2] . With the increasing complexity of functional requirements, structure form is constantly changing.…”