Seismic Performance Experiment On High-performance Ferrocement Beam

To meet the requirements of people on the change of building function, building structure reinforcement requirements after a disaster, building structure reinforcement was born, showing a broad development in the construction industry and huge market, bring the construction industry into a new situation. There are many concrete structure reinforcement methods such as: enlarged section method, displacement, seismic reinforcement method,reinforced concrete paste method with carbon fiber composite reinforcement, etc. These strengthening methods have some deficiencies and applicable range,along with the development of new composite cement mortar materials,high-performance ferrocement(HPF) was born. High-performance ferrocement is colligation steel fabric in the surface of the original structures, using planting-bar, or bending anchor anchoring reinforcement fabric,finally cover a layer of high performance composite mortar reinforced, so as to achieve reinforcement effect.Today,structural seismic performance is particularly seriously all over the world, and the research achievements of predecessors have done lacking of the seismic performance of high-performance ferrocement reinforcement structure research. For exploring the seismic action of high-performance ferrocement reinforcement technology, in this paper, the polymer mortar reinforcement fabric reinforced beams were put into the pseudo-static test and reach the strength, stiffness, energy dissipation,seismic performance index of steel fabric reinforced polymer mortar beam in low cycle under reciprocating loading, and two types of mesh reinforcement anchoring loading in low cycle, the working performance of the similarities and differences.This paper mainly do the following:(1) Design three beam-column joints combination specimens, including one not reinforced specimen, two steel fabric reinforced polymer mortar specimen. Two polymer reinforcement fabric reinforced specimen planting-bar, and bending anchoring way to anchor mesh reinforcement. Beam active loading method is adopted to improve the antisymmetric low cycle reciprocating loading test;(2)Pprocessing and analysis the above three test data of the specimens.After the test data processing and analysis, the following conclusions:(1) High-performance ferrocement reinforcement technique can effectively improve the stiffness of structure, ductility and hysteretic energy dissipation and seismic performance;(2) The test results show that the bending anchoring way has better structural seismic performance than the structure of planting-bar;(3) The results showed that the polymer mortar steel mesh reinforcement, specimens appear node failure.