Online Hybrid Test on a Seismically-Retrofitted Masonry Building
Tao Wang1, Xiaoting Wang1, Xi Chen2, Wenfeng Li2
1 Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, CEA
Yanjiao, Sanhe, Heibei, 065201, CHINA
2 Beijing Institute of Architectural Design
Beijing, 100045, CHINA
Abstract. A retrofitting technology using precast steel reinforced concrete (PSRC) panels is developed to improve the seismic performance of old masonry buildings. The PSRC panels are built up as an external PSRC wall system surrounding the existing masonry building. The PSRC walls are well connected to the existing masonry building, which provides enough confinement to effectively improve the ductility, strength, and stiffenss of old masonry structures. The PSRC panels are prefabricated in a factory, significantly reducing the situ work and associated construction time. To demonstrate the feasibility and mechanical effectivenss of the proposed retrofitting system, a full-scale five-story specimen was constructed. The retrofitting process has been completed within five weeks with very limited indoor operation. The specimen was then tested in the lateral direction which would suffer sigifnicant damage once caught by a huge earthquake. The technical feasibility, the construction workability, and the seismic performance were thoroughly demonstrated by a full-scale specimen construction and pseudo-dynamic tests.
Keywords: Masonry buildings, Precast SRC panel, Seismic retrofit, Pseudo-dynamic test, Seismic performance.
