Research On Seismic Performance Of Glazed Hollow Bead Insulation Concrete Hollow Shear Wall

Glazed hollow beads insulation concrete was brought up to adapt the building energy-saving and wall material materials innovation in our country.The structure with this kind of concrete has the function of thermal insulation and load-bearing and can avoid fire disaster and nonstructural damage,so it has enormous advantages in structure seismic, economic indexs and social benifits. In order to further expand the advantage and meet the requirements of energy saving,This paper proposes a new type of bearing insulation wall—Glazed beads insulation concrete hollow shear wall. As part of system research, this paper aims to through the experimental study and numerical simulation to analysis bearing capacity and seismic performance of shear wall.The main research content is as follows.1. Through low cycle loading tests of three shear walls with different shear span ratio, examines specimens failure mode. Process the test data,draw the hysteresis curves and skeleton curves, analysis of bearing capacity and deformation capacity. The results show that.(1)The hollow shear wall failure pattern and common shear wall are basically identical. Low shear wall occurred shear failure,mid shear wall occurred bending—shear failure,high shear wall occurred bending failure. Compared with ordinary shear wall hollow shear wall cracks is relatively loose, and vertical cracks appear in the hollow area dividing the shear wall into wall-column, improved the ductility and energy dissipation capacity.(2)As the shear span ratio increases, bearing capacity and stiffness of the hollow shear wall decline, the ductility coefficient increased. The ultimate bearing capacity of the specimen GHSW-1 increased by 39.5%, 92% relative to GHSW-2,GHSW-3. K_c 、K_y、K_u of GHSW-1 increased by 3.3 times, 3.08 times, 2.42 times relative to GHSW-3. The stiffness of GHSW-3 change slowly after yielding, late stiffness is stable, and get great plastic deformation before significant damage.The ductility coefficient of three shear walls are bigger than 7. Increase the shear span ratio of specimens, specimen hysteresis curve become more smooth and full,beside the energy dissipation ability and the seismic performance improved.2. ABAQUS is used to analysis finite element model of specimens in different shear span ratio and axial compression ratio. The results show that.(1)The failure pattern of finite element model and specimens are basically consistent.Simulation results are basically in agreement with the experiment results.(2)Axial compression ratio almostly does not affect the cracking load,with increasing axial compression ratio, the bearing capacity of the shear wall model improved.(3)Compared with solid shear wall, the bearing capacity of hollow shear wall decreased by 11%,the ultimate displacement declined by 5%. This suggests that the holes have a little influence on seismic performance of hollow shear wall, the hollow shear wall has comparative seismic performance relative to ordinary shear wall.3. Calculate the bearing capacity of hollow shear wall,according to relative regulations. In the condition of limit load, the tension zone of the hollow shear wall’s area is larger than ordinary shear wall. When calculate the ultimate bearing capacity,expand the calculation scope of tensile reinforcement according to ordinary shear wall.