Analysis and seismic tests of composite shear walls with CFST columns and steel plate deep beams |
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| Authors: | Hongying Dong Wanlin Cao Haipeng Wu Jianwei Zhang Fangfang Xu |
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| Institution: | 1. College of Architecture and Civil Engineering, Beijing University of Technology, Beijing, 100124, China
2. College of Architecture and Civil Engineering, Beijing, 100124, China
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| Abstract: | A composite shear wall concept based on concrete filled steel tube (CFST) columns and steel plate (SP) deep beams is proposed and examined in this study. The new wall is composed of three different energy dissipation elements: CFST columns; SP deep beams; and reinforced concrete (RC) strips. The RC strips are intended to allow the core structural elements — the CFST columns and SP deep beams — to work as a single structure to consume energy. Six specimens of different configurations were tested under cyclic loading. The resulting data are analyzed herein. In addition, numerical simulations of the stress and damage processes for each specimen were carried out, and simulations were completed for a range of location and span-height ratio variations for the SP beams. The simulations show good agreement with the test results. The core structure exhibits a ductile yielding mechanism characteristic of strong column-weak beam structures, hysteretic curves are plump and the composite shear wall exhibits several seismic defense lines. The deformation of the shear wall specimens with encased CFST column and SP deep beam design appears to be closer to that of entire shear walls. Establishing optimal design parameters for the configuration of SP deep beams is pivotal to the best seismic behavior of the wall. The new composite shear wall is therefore suitable for use in the seismic design of building structures. |
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| Keywords: | concrete filled steel tube （CFST） column steel plate （SP） deep beam composite shear wall seismic test calculation and analysis |
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