Research On Long Span Reinforced Concrete Open-web Sandwich Plate

Putting together the steel and concrete to form the Reinforced Concrete Structure with open-web sandwich plate, but because the limit of the shape and the characteristics of structure, as well as the needs of people on the big space.,more and more people choose this structure of large span space,which lead to the formation of large span reinforced concrete open-web Sandwich Plate. It is composed of upper and lower layer of reinforced concrete slab with rib,and it’s also known as the "shear key type bidirectional hollow plate“.Its width is greater than the height of the reinforced concrete shear key in well the word lattice at the intersection of the connection as a whole.Tt means that only in this way can the Long Span Reinforced Concrete Open-web Sandwich Plate make full use of advantages of both steel and concrete in tension and compression, so as to achieve the purpose of optimizing the structures. It not only has light weight, large flexibility, small damping,but also some other characteristics. At the same time,it is a strong sensitivity to the lateral internal forces of the structure.Therefore, it is very important to study the stress and strain of the structure of Long- span RC poen-web sandwich plate.In this paper, the present situation of the Long Span Reinforced Concrete Open-web sandwich plate is introduced, and the background of the establishment is introduced,summing up the characteristics of the new structure system, including Vierendeel Sandwich mesh and plate selection, types, characteristics, height regulations, special form, construction method and so on. In addition,it also summarizes the various computational Vierendeel Sandwich Plate Structure analysis and calculation method.For Long Span Reinforced Concrete Open-web Sandwich Plate, in order to use the theory and research methods into engineering practice,there is a lack of universal program is referenced in this article. For the engineering example, some domestic scholars have calculated.it by using the TAT analysis procedure,which has been carried on the three-dimensional space, namely, the program will open web sandwich according to the plate truss input in PMCAD, in the last quarter of two according to the hollow sandwich layer of the input, the lower chord as a layer and layer winding is two input, upper and lower chords according to the actual section according to the input beam, shear key column according to the input, this approach is more complicated. This paper uses the finite element analysis software MIDAS/GEN, simulation of the upper plate unit is simulated by beam element. The shear key Le plate beam element cross plate automatically formed by Le, modeling more flexible and convenient operation and use, Convenient. This modeling analysis of structural deformation, stress response and other mechanical parameters were calculated. Theory analysis and practice indicates that the Open-web Sandwich plate floor system belongs to the category of the sheet space structure with good mechanical properties, the effect of building function and technical and economic index of the engineering design method of structure in the East China region no archive in the area of Anhui is at the design earlier, There was no parallel in history, it’s an old problem,but was given a new method,.The previous general numerical simulation often by the ANSYS or SAP2000, However,in this paper,we chooses a mean with MIDAS/GEN carring on the modeling simulation, putting forward a new modeling method for Long-span RC sandwich plate structure. This method is using finite element analysis software MIDAS/GEN, simulating the upper plate unit is simulated by beam element. The shear key Le plate beam element cross by Le plate automatic formation model is more flexible and convenient, easy to operate. In addition, the modeling analysis of the deformation of structure, stress response and other mechanical parameters were calculated. Theory analysis and practice indicates that the Vierendeel Sandwich plate floor system belongs to the category of the sheet space structure with good mechanical properties, the effect of building function and the technical and economical indexes. So far, although it is a new type of structure, but it has been a lot of the designer, and has broad application prospects in the future of the project.