Macro-Model And Mechanical Properties Of Fiber-Plasterboard Filled With Reinforced Concrete

Glass fiber reinforced gypsum wall (GFRGW) is new building material and has many advantages than brick, but problems on engineering application and mechanical analysis need be solved at present. Based on tests on GFRGW and micro and macro models on reinforced concrete structure, macro model for GFRG and fiber elemet model for beam with different stiffness are provided in this paper. Besides, to reduce cost and time on constructon of GFRGW, new precast composite slab with rib is invented. Based on the provided model, three-dimension model of GFRGW project is founded, mode and pushover analysis of which are carried out. The main work is as follow:1. Based on the concept of macro model and gauss integral, macro nonlinear model for GFRGW is provided which is compose of four vertical-bar element and one shear element. To improve calculating efficiency and accuracy, inboard bar elements are placed on the Gauss-Legendre integral point. The element stiffness matrix and bars'stiffness of macro model are deduced. The computational results are close to those of experiments, which show that the model has relatively high accuracy and simple calculation. So, macro model is an effective model which can be used to analyze other complex structures.2. Based on the experiment study, hysteretic models of the vertical and horizontal component are revised and revised skeleton curves of the components are given.Skeleton curves reflect action influenced by concrete,steel and GFRG.3. Based on the constitutive relation of concrete and steel and fiber model, fiber model of beam with different cell is deduced. Fiber elemet model for beam with different stiffness is provided. The fiber element model is composed of fiber element in the elasttoplastic region and elastic element in the elastic region.4. Based on the macro model for GFRGW and Fiber elemet model for beam with different stiffness, three-dimension of experimental project is founded and pushover analysis is carried out. The results of three dimensions model under different lateral loads are compared with that of FEM analysis to prove the validity of macro model.5. Based on the composite slab with rectangle contact surface, a new composite slab with longtial rib is invented.A trough bottom plate has big stiffness, high crack...