TEST STUDY ON SEISMIC BEHAVIOR OF SPＲAYED CONCＲETE SANDWICH SHEAR WALLS WITH LOW SHEAR-SPAN RATIO

To study the seismic behavior of sprayed concrete sandwich shear walls with low shear-span ratio，quasistatic tests on 3 specimens were carried out． The test results indicated that the concrete sprayed on both surfaces of the steel wire mesh framed by expanded polystyrene panel and the boundary elements work together as a unit． The wall specimens failed in bending-shear． The boundary elements enhanced the elastic-plastic deformation capacity and energy dissipation capacity of the specimen obviously．