Seismic Finite Element Analysis Of Precast Concrete Shear Wall With Horizontal Seam

Nowadays,our country is pushing forward the industrialized building and construction and the and the assembled precast concrete shear wall structure has gained more and more attention due to the advantages of high degree of industrialization,short construction time,easy control of construction quality,and energy conservation environment protection.To research the seismic performances of the assembled precast concrete shear wall with the constraint grout-filled lap connection of steel bar,our research team has done the pseudo-static test of five shear wall specimens.Five kinds of connection modes have been tested.They are all connecting method with rebar lapping in grout-filled constrained hole,partly connecting method,method of using connecting steel bar as well as cast-in-place concrete structure.Based on the existing experimental research,the assembled precast concrete shear wall components with the constraint grout-filled lap connection of steel bar were simulated and analyzed by using the large general finite element analysis software ANSYS in this paper.The seismic performances of assembled precast concrete shear wall under monotonic and low cycle load were analyzed,as well as the related influence factors were analyzed.The following research work have been carried out:(1)The shear mechanism of the prefabricated shear wall flat-fell seam interface was studied,which is mainly combined with the composition of interface shear force,the influence factors of interface shear performance,the interface shear mechanism and the calculation of shear strength.(2)Through the introduction of previous existing test including its purpose,test method and specimen design,we can clearly understand the specific situations of the prefabricated shear wall model.And then the ANSYS finite element modeling process was clarified in detail.(3)The model was simulated and calculated under monotonic loading and low cycle loading adopted to finite element analysis software ANSYS.And the finite element calculation results were analyzed under the comparison of test results.Based on the accurate and reasonable finite element model,the axial compression ratio,lap length and vertical steel bar connection ways were analyzed.