The Mechanical Properties Influence Of Beam Slab Structure Of Open Hole To The Wall Based On Plate Theory

With the rapid development of economy in recent years,the construction industry has entered the period of rapid development,and the reinforced concrete plate as a basic component of civil engineering structures has been widely applied to various fields.But in the most concrete application construction industry,thin plate structure is most used,not the thick plate.The metro industry in China has developed rapidly in recent 10 years.Due to special use environment of subway station,has created its different special requirements of reinforced concrete plate.The thickness of the reinforced concrete slab in the subway station is far greater than the general building in reinforced concrete slab thickness.Shu-yao long,Jiang Chen through study of sheet and plate line generally take thick ratio of 0.1,the medium thickness plate and thick plate line generally take thick ratio of 0.2.Academia for sheet research has made many achievements,but for the thick plate of research and the insufficiency,still often used in design of thin plate theory.The article based on Reissner plate theory,systematically analyze the stress influence of open hole on the medium plate.Emphatically analyze four big factors as shape of the hole size,hole,the hole location and thickness and so on.By using the large general finite element software ABAQUS to establishes a model of multiple sets of various factors were analyzed.And by comparing the concrete stress and strain of panel and the horizontal shear stress changes in under the influence of various factors,summarizes its uniform diameter,thickness ratio and thickness ratio,the change rule of situation of open hole will be applied to other thick plate.Finally,based on the actual engineering,the required openings in the project are summarized into three kinds,and the finite element model is established for different holes.The effect of the hole on the mechanical performance of the plate is studied in the whole double-layer frame structure,And verify previous part of the conclusions.