Horizontal Load Study On Partial Slotted L-shaped Short-limb Shear Wall

L-shaped short-limb shear wall is mainly used in high-rise residential buildings, Asa kind of commonly used section format in the structure, For traditional L-shapedshort-limb shear wall, the concrete crush in the end of web before tension bars yield inthe flange, especially under the large axial compression ratio. With small eccentricityfailure mode, so its seismic performance of L-shaped short-limb shear wall is poor.Partial slotted L-shaped short-limb shear wall: Setting the vertical seam in yield hingeregion and separating web reinforcement from other steel bars in the flange forms a newtype of component.Make only configuration within the flange of the web reinforcementinvolved in web section stress pattern, Other flange reinforcement only participate flangein force. Make the plastic hinge zone into a symmetrical reinforcement. Thereby reducethe depth of concrete compression zone in the web, increasing the curvature ductility,improving seismic performance of the wall.Relative to common L-shaped short-limb shear wall，in order to testify thesuperiority in seismic performance of Partial slotted L-shaped short-limb shear wall, two1:2scale common L-shaped and two partial slotted L-shaped short-limb shear wallspecimens subjected to low cyclic loading are conducted. describing the damage processof short limb shear wall in detail. Under the same parameters such as: section form、axial compression ratio、shear span ratio、stirrup reinforcement ratio, contrastivelyanalyzed bearing capacity, ductility, hysteretic characteristics, energy dissipation capacityetc. anti-seismic property.Nonlinear finite element simulation and test results is performed, meanwhilenonlinear finite element calculation results and experimental results were studied also. Toenrich the tests result，Analyzes the influence to anti-seismic property of L-shapedshort-limb shear wall when changes the parameters, such as axial compression ratio andconcrete strength. Under the different axial compression ratio and concrete strength,accurate to get the change law of bearing capacity and ductility of L-shaped short-limbshear wall.Partial slotted L-shaped short-limb shear wall can improve performance of L-shaped short-limb shear wall web effectively, improve its bearing capacity, and solve theproblem of reinforcements and concrete distribution. Using this form local slotting, thel-shaped short limb shear wall seismic performance is improved. For Partial slottedL-shaped short-limb shear wall, with reasonable mechanical performance and simpleconstruction, can be applied in practical engineering structure widely.