Research On Mechanical Performance Of SRC L-shaped Short-limb Shear Walls

SRC short-limb shear wall is a common short-limb shear wall wall end adding steelembedded column combination structure form, has the advantages of steel structure andconcrete structure, high bearing capacity, plasticity is good, has a broad prospect inengineering application. But at present domestic to SRC short shear wall structure stressperformance study is less, theoretical research lags behind engineering practice, so researchon its mechanical performance has important theoretical significance and engineeringapplication value.In this paper, Consider the influence factors of the concrete strength grade，high-thickness ratio and axial compression ratio of wall limb section to mechanicalperformance of the member. A total of10finite element models were established.The solidmodeling method and numerical simulation were carried out to analyze steel reinforcedconcret L-shaped short-limb shear wall by using ANSYS software, and studied the ductility，bearing capacity and the synergy of steel and concrete for members under monotone loadand studied hysteresis curves, skeleton curves, stiffness degradation curves of the memberunder cyclic load, analyzed plastic equivalent stress and strain of shear walls and stressdistribution of the steel and concrete under various loads. The research results show that thesteel reinforced concrete l-shaped cross-section short limb shear wall structure undermonotonous load bearing capacity is bigger, three kinds of steel, concrete and steel materialis better, and can give full play to their respective mechanical performance, fully reflects itsgood ductility; Steel reinforced concrete l-shaped cross section of short limb shear wallunder cyclic loading is relatively full hysteretic curve, stiffness degradation and pinched herno obvious, showing good energy dissipation ability; the bearing capacity of SRC L-shapedshort-limb shear walls would be greatly increased,hysteresis curves would be better andductility gets worse when strength grade of concrete strength grade changed, so concretestrength grade should be taken into account during the process of the design; The alteration of Axial Compression Ratio of Steel Reinforced Concrete has an important impact on thestructural performance.The bearing capacity of SRC L-shaped short-limb shear walls wouldbe greatly increased and ductility gets worse when the Axial Compression Ratioincreases.The bearing capacity, hysteresis curves and dissipation performance of SRCL-shaped short-limb shear walls would be better when the axial compression ratio is0.2~0.3;When the high-thickness ratio shear walls increases, the bearing capacity of SRC L-shapedshort-limb shear walls would be greatly increased and hysteresis curves and plastic behaviorgets worse. The option of shear walls limb shuoud take into account economic applicability.