| Assembled monolithic reinforced concrete waffle hollow-core floor (WFB hollow-core floor for short) is a new floor system, composed of cast-in-place beams and prefabricated concrete box fillers, with the advantages of large span, lightness, convenience in construction, lower cost and so on. It is suitable to the large column span and bay width building, and has been widely applied in some area in China. In this thesis some studies have been carried out on the WFB hollow-core floor. The major researchs are as follows:1. According to the features and application conditions of the existing simplified calculation method, the corresponding simplified models of the WFB hollow-core floor were proposed. And we probed into the reasonable value of the stiffness amplification coefficient of rib-beam. Compared with the current concrete criterion, a simplified calculation method for the stiffness of the WFB hollow-core floor which was analyzed in this thesis was proposed.2. The WFB hollow-core floor was analyzed by the approach of linear elastic analysis. Then the differences were compared between these simplified calculation methods on solving the internal force and deformation.3. Three finite element models of WFB hollow-core floor, solid flat slab and crossing beam system were established respectively. We analyzed their distributions of stress and strain and compared their similarities and differences by the software-ANSYS. The finite element model of WFB hollow-core floor was made a non-linear analysis in ANSYS. Comparing finite element analysis results, analytical method results with modified stiffness by proposed formula and test results, we believed that the look-up table method with modified stiffness by proposed formula was a simplified calculation method which was applicable to practical engineering. The impact of box on the rib-beam was analyzed and then we obtained the stiffness amplification coefficient of rib-beam, referencing for engineering design.4. The destroy mechanisms of the WFB hollow-core floor were supposed in different support conditions. The ultimate strength of such floor was worked out by applying yield line theory to this floor. Comparing the testing results and the finite element analysis results, the differences were small, and it showed that destroy mechanisms and the finite element analysis results were all right. 5. Through the static test research of reactive powder concrete (RPC) box filler, the ultimate strengths of the top plate and the base plate of this box were tested. And the base plate of bending failure destroyed ahead of the top plate of punching shear failure. Comparing results by concrete criterion formula and test results, it found that the formula method was applicable to RPC slab and this method was secure.
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