Shaking table test of earthquake-damaged masonry structure strengthened with BFRP
LEI Zhen1 , ZHOU Deyuan1 ,ZHANG Hui2 ,LI Yaming2
1.Research Institute of Structural Engineering and Disaster Reduction, Tongji University, Shanghai 200092, China; Shanghai institute of architectural design & research Co., Ltd, Shanghai 200041, China
Abstract：The earthquake investigation shows that masonry buildings are prone to severe damage or even collapse due to their seismic vulnerability. BFRP has excellent physical and mechanical properties as well as its low cost, but it isn’t widely used in the strengthening of earthquake-damaged structures. Based on the shaking table tests of pre-damaged model (1:4 scaled three-storeyed masonry structure model) and earthquake-damaged model strengthened with BFRP, the validity of strengthening with BFRP on earthquake-damaged masonry structure was verified through contrasting and analyzing the dynamic characteristics, seismic response and damage of models in each test. The experimental results show that this strengthening technique without changing the structure weight can not only ameliorate the brittleness of masonry and delay the crack development in the wall, but also increase the structural integrity and stiffness and improve the ductility and the energy dissipation capacity. The seismic performance of earthquake-damaged masonry structure after reinforcement can reach or even exceed that of the undamaged structure, which proves the highly effective of strengthening with BFRP on earthquake-damaged masonry structures.
2013, Vol. 32 
