Shaking table tests on V-shaped RC columns at the weak ground storey of a building. Issue 11 (1st March 2019)

• Record Type: Journal Article
• Authors: Hung, Nguyen Van; Huy, Nguyen Xuan; Thuy, Pham Thi Thanh; Linh, Nguyen Ngoc; Dat, Pham Xuan
• Is Part Of: Magazine of concrete research. Volume 72:Issue 11(2020)
• Page Start: 564
• Page End: 577
• Publication Date: 2019-03-01
• Subjects: finite element methods -- testing, structural elements -- vibration; Concrete -- Periodicals; Concrete construction -- Periodicals; Concrete -- Testing -- Periodicals; 624.1834
• DOI: 10.1680/jmacr.18.00360
• Languages: English
• ISSNs: 0024-9831

Abstract

Abstract : This paper presents experimental and numerical investigations of the seismic behaviour of V-shaped reinforced-concrete (RC) columns at the weak ground storey of a building. Two half-scaled RC columns were tested to failure by a simulated ground acceleration time history using a shaking table. The test setup was designed to simulate the sliding mechanism of the column specimens, termed the double-curvature mechanism, which is expected to occur in a soft-storey building. The seismic responses of the specimens were evaluated and compared with each other in terms of general performance, hysteresis response and failure modes. Thereafter, a fibre-element model, verified by the test data, was used to conduct a parametric study on the effects of axial load ratio and longitudinal reinforcement arrangement on the seismic performance of irregularly shaped columns.