Analysis And Research Of The Mechanical Performance Impact Of Structural Opening On Reinfocrced Concrete Shear Wall

As economy, society and the progress of science and technology, increasing the height of the high-rise buildings in our country, the structure of the system is also more complex diverse, high-rise buildings are rapidly moving forward in an unprecedented scale. As one of the most major forms of high-rise building structure system of shear wall structure, he is a major structural component to resist lateral force, with their large lateral stiffness, the lateral displacement of the structure under the earthquake limit easily satisfied. However, as people gradually increase to use function request, the situation of the open holes in the shear wall structure is more and more complex, open hole rate increased, the hole shape is irregular, the hole arrangement of irregular phenomenon more and more, such as the mouth of the cave to the influence of shear wall structure is becoming more and more big. So the research on the hole’s influence on the shear wall structure not only has theoretical value, has more practical value.Based on previous research results of scholars both at home and abroad, is the mouth of the cave effect on the performance of shear wall to do a series of research. In this paper, using large-scale finite element software ANSYS, simulate and calculate the model of shear wall with the mouth of the cave under horizontal load and vertical load. The research work mainly do the following aspects:1.Open hole rate of research on the effects of shear wall Using the large finite element software ANSYS for different open hole rate of shear wall model analyzed respectively. Detailed analysis of the ultimate load, the limit displacement, crack distribution and under the same load shear wall stiffness, load-displacement curve and the shear stress distribution when shear wall open hole rate at10%,20%,30%and40%. Through the analysis, it is concluded that the shear wall stiffness decreases with the increase of open hole rate; Horizontal displacement; Ultimate bearing capacity reduced, etc.2. The hole shape on the research on the effects of shear wallUsing large-scale finite element software ANSYS respectively the wide flat long and narrow hole hole and shear walls are analyzed in modeling. The hole shape is not ultimate load of shear wall at the same time, the limit displacement, crack distribution and under the same load shear wall stiffness, load displacement curve and the shear stress distribution, and so on and so forth. Through the analysis, it is concluded that the long and narrow hole shear wall stiffness, bearing capacity and deformation capacity is superior to the conclusion of the hole wide flat.3.The position of hole for research on the effects of shear wallIn rectangular hole shear wall, for example, using the large finite element software ANSYS respectively on the hole horizontal position and vertical position at the same time, the model is analyzed. Detailed analysis of the ultimate load of rc shear wall, the limit displacement, crack distribution and under the same load shear wall stiffness, load-displacement curve and the shear stress distribution, and so on and so forth. Through analysis, it is concluded that the hole position is not at the same time of shear wall stiffness, bearing capacity and deformation capacity, the change rule of the hole position for actual engineering the different shear wall design, the reference basis is given.4.Research on the hole arrangementBy14layer frame shear wall structure under static and seismic stress, for example, using finite element analysis software MIDAS/GEN structural design structure model is established, and detailed analysis of the shear wall hole arrangement the cycle of frame shear wall structure, layer displacement and Angle displacement, base on the maximum shear contrast analysis. Through analysis, it is concluded that the rules of the hole is arranged on the integrity of the reinforced concrete frame shear wall structure and overall stiffness, as well as the whole structural deformation is obviously superior to the mouth of the cave and staggered structure.