The Lateral Stiffness And Influencing Factors Analysis On Multi-ribbed Energy Dissipation Composite Wall

The multi-ribbed energy dissipation composite wall is the main load-bearing member of a new energy-saving system structure, which has made important achievements in theoretical and applied research. Based on the pre-trial research and theoretical analysis, the advantages and disadvantages of the pre-contrast model and the calculation method of calculating are summed up, and also the elasticity of the extreme value method and semi-empirical method to the lateral stiffness calculations of the wall has been introducted. The numerical modeling experiment has been done with finite element analysis software, also the lateral stiffness and influencing factors on multi-ribbed energy dissipation composite wall has been researched. The main research content as follows:1. Based on three groups pre-test results of the wall, multi-ribbed energy dissipation composite wall has been deeply analyzed. At present, there are a few typical calculation models and calculation methods for the multi-ribbed energy dissipation composite, which are comparative analysised.2. Based on fiber-reinforced composite material model,the extreme elasticity method and semi-empirical method are introducted to the stiffness calculation of multi-ribbed energy dissipation composite wall.The first method can verify the accuracy of the other calculation models while the latter can provide a theoretical basis for the engineering practice.3. Refer to previous experiment results, load-bearing performance of multi-ribbled energy dissipation composite wall is analyzed by ANSYS. Concrete and filled blocks are simulated by solid65 element, and based on the correct finite element model,five influencing factors of the lateral stiffness are selected to discuss the influence law of elastic lateral stiffness of the wall.4. Three factors such as shear span ratio and axial compression ratio are selected. Orthogonal experimental method is adopted to design eighteen experiments of different factors' level. The relationship between the factors and the stiffness of multi-ribbed energy dissipation composite wall slab is analyzed using APDL parametric modeling.