The Ultimate Bearing Capacity Analysis Of RC Two-way Slab Considering Effect Of Beam

The floor is a major component of the building structure. Now a huge number of steel is used in reinforced concrete floor. It results in the high cost of steel, and thus the floor design method for controlling the cost of construction plays a vital role. How to effectively select the floor design methods, and how to control a variety of floor design factors for building structures designers is worthy of analysis and inquiry.Based on the traditional floor structure design and analysis methods, namely the classical theory of elasticity and plasticity theory, the traditional design and analysis methods only select a plate of the floor structure which is a separate division, than select the corresponding boundary conditions is on the plate structure design and analysis. In fact, such an analysis is often conservative. The breakthrough in the one-sidedness of the traditional design considerations, design of reinforced concrete rectangular plate of the beam-slab failure mode, this study is as follows:(1) Limit analysis method and the principle of virtual work the floor is shipped in slab failure modes and the beam-slab failure mode of the basic failure mode. Slab expression of the ultimate moment of failure mode deduced three areas in both cases, grid plate (the grid of the central, the grid of the border, the grid of the corner), one situation is:do not consider the deformation of the beam and cantilevered plates selected slab grid; another situation is:do not consider the deformation of the beam but considering the impact of the cantilever plate cells on the selected slab. The beam-slab failure mode also deduced the grid plate of the three areas in both cases (the grid of the central, the grid of the border, the grid of the corner) the ultimate moment expression, one situation: consider the deformation of the beam but does not consider hanging pick the slab selected slab grid; another situation:taking into account the deformation of the beam and cantilevered plates selected slab grid.(2) Use the proceeds of the ultimate moment of expression, drawing on existing experimental structure, several calculation methods to calculate the method of comparison with numerical analysis to identify each grating in the most dangerous destruction of institutions and the corresponding ultimate moment expression, and to find a more rational design of in-situ concrete floor, in order to optimize the design.