Abstract

Info

Author(s):: WU Fang-bo; ZHANG Gao-bo; OUYANG Jing; HU Ke; ZHOU Xu-hong; College of Civil Engineering, Hunan University

Keywords:: non-formwork shear wall; prefabricated formwork; quasi-static test; seismic behavior; shear connector; insulation layer

Abstract:: In order to study the seismic behavior of non-formwork shear wall, quasi-static tests of one non-formwork insulation shear wall, one non-formwork shear wall and one cast-in-place shear wall were performed. The indices of seismic performance, such as, the bearing capacity, hysteretic loops, skeleton curves, ductility performance and energy-dissipation were analyzed, and the integrities of non-formwork shear walls were also analyzed. The results show that the mechanical behavior and failure mode of non-formwork shear wall are the same as those of the cast-in-place shear wall, and the indices of seismic performance are similar. Non-formwork shear walls have the similar seismic behavior to cast-in-place shear walls. Compared with the cast-in-place shear walls, the prefabricated formwork and insulation layer weaken the working performance of non-formwork shear walls to a certain extent, but the effect is limited. During the working process, the relative displacements of prefabricated formwork inside the plane and outside the plane are small, and there is no phenomenon of separation between the prefabricated formwork and the cast-in-place area in a larger range. The construction measures of shear connector and natural rough surface can better ensure the cooperative working ability of the components of the shear wall and the integrity of the wall.