The flexural rigidity of prestressed concrete two-way composite slab was analyzedBased on the theory of elastic thin plates,according to the orthotropic plate's perpendicularity,the corresponding calculation formulas of rectangular unidirectional prestressed slab simply supported on four sides were deducedMoreover,with the program written by authors,the coefficients of two-way composite slab under border simply supported on four sides were obtained,authors made a form correspondence to the composition slabThus,this established a stable condition for the further appliance of such composition slabComparing with the elastic coefficient of cast-in-site two-way slab simply supported on four sides,it shows that in the design of prestressed two-way composite slab,prefabricated components along step short should be fixed up,which can make full use of its advantages of saving steel products

Design Method of Prestressed Concrete Simply Supported on Four Sides of Two-Way Composite Slab

Design of reinforced concrete slab subjected to load requires understanding of design philosophy and detailedknowledge of reinforced concrete structure. The support conditions, loading pattern, span dimensions in both thedirections, grade of concrete etc are the governing issues for deciding thickness and reinforcement in bothdirections. Various charts, tables are available for references in IS code456, for designing of slabs. Use of suchcharts and tables are tedious and interactive approach is required for economical designing. Artificial neuralnetwork is one of the tool to get proper processing of data and obtaining required results by effective training ofnetwork. In present paper, several data is prepared and developed using spreadsheet for various end conditionsand spans. Total 51 cases are studied in each 9 end conditions and tabulated for training and 12 cases are testedfor expected output of thickness and amount of steel. Results are comparable with analytical one with least % oferror.

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Application of Artificial Neural Network for Design of Two Way Slab

The slab is a fundamental component of any building that are used as floors and roofs. It is, most commonly, made up of reinforced concrete. Slabs are the structural elements whose thickness is significantly less than their other dimensions. Slabs can have different shapes and conditions of support. It may be a solid, waffle-type or a ribbed slab. They are categorized as one way and two-way slab according to their load-carrying nature. In this paper, a comprehensive statistical analysis of factors that influence the design parameters of slab is presented. It is found that there is low correlation between that there is high but negative correlation found between Effective Depth Required and spacing_x and Inputs variable is able to explain well only two variables Effective_depth require and Spacing_x. The effect of magnitude of different input variables on output variables and interaction of combination of different input variables on output variables for design of Two-Way Slab is also performed.

Gaurav Sancheti

Papers

Statistical Analysis of Influencing Design Parameters for Two Way Slabs