Study on Mechanical Behavior of the Key Components of High-Level Transfer Frame-Shear Wall Structure with Viscous Dampers

Abstract

Based on the limited demand of transfer beam sectional dimension of tall building structure with transfer story in Technical Specification for Concrete Structures of Tall Building, a high-level transfer frame-shear structure with viscous dampers is presented for simulating the mechanical behavior of the key components effect with consideration the transfer beam depth with 1/6, 1/8 and 1/10 calculation span. The analysis results indicate that the internal force of the transfer beam, frame-support column of transfer story, shear wall above transfer level and base shear wall is obviously reduced, with the reduction of the transfer beam depth. Comparison with the high-level transfer frame-shear structure, the internal force of the key components of the high-level transfer frame-shear structure with viscous dampers also is reduced. Therefore, the limited demand of the transfer beam sectional dimension and the construction measure of the shear wall could be properly reduced in the high-level transfer frame-shear structure with viscous dampers.

Study on Mechanical Behavior of the Key Components of High-Level Transfer Frame-Shear Wall Structure with Steel-Lead Viscoelastic Dampers

“…The primary objective of the new system is change the structural dynamic characteristic, dissipate energy under earthquake action and substantially reduce the seismic response of the gravity-load-resisting structure, which reduce structural damage or avoid structural collapse. In order to prove the seismic performance of the new system, Nonlinear time history analysis under frequently occurred earthquake and rarely occurred earthquake of the high-level transfer structure with the steel-lead viscoelastic dampers, buckling-restrained braces, lead-viscoelastic dampers or steel-lead viscoelastic dampers are conducted, and the results show that the proposed structural scheme is feasible, and the original structural seismic behavior could be obviously improved on account of the adoption of the system [4] [5]. The internal force of shear wall above transfer story is carried by transfer members due to the highlevel transfer structure typically include shear wall systems in higher zones and moment-resisting frames together with core walls system in lower zones, hence the big transfer beam sectional dimension in the structure that need more than 1/6 calculation span with consideration seismic action, and 1/8 calculation span with non-consideration seismic action in Technical Specification for Concrete Structures of Tall Building(JGJ3-2002) be used.…”