Research On The Compressive Load-carrying Mechanism Of Energy-saving Block&Invisible Multi-ribbed Frame Composite Walls

Energy-saving block&invisible multi-ribbed frame structure is a light andenergy-saving,green environmental protection new architecture. Energy-saving block&invisible multi-ribbed composite wall is a core component of this architecture.In order to have further research on the force-deformation capacity and thefunction of each component under axial pressure and eccentric pressure.ABAQUSsoftware were used to simulate the energy-saving block&invisible multi-ribbedcomposite wall and the invisible multi-ribbed structure without energy-saving blockunder axial/eccentric pressure,based on the experiments of energy-saving block&invisible multi-ribbed wall under axial/eccentric pressure that the research teamhave done a period time ago. According to the experimental and simulation results,research the compressive stress mechanism of this composite wall. The main researchwork and the achievements are listed as follows:Based on the experimental results and the research achievements offoredecessors, the suitable damage model constitutive relation for concrete&energy-saving block and the elastic-plastic constitutive relation of steel bar wereestablished.The simulations were done for the axial compression experiments ofenergy-saving block&invisible multi-ribbed composite wall. The differences of axialbearing capacity and lateral displacement between the experimental values and thesimulation values were contrasted. The comparison results show that the finiteelement model is right. Then change the height of the wall to expand the parametersto simulate. Remove the block, only simulate the wall composed by frame grids.According to the experimental result and numerical simulation results, analyzed thestress state of frame grid,block and the steel bar. On the basis of those research, thesynergistic effect between the energy-saving block and concrete frame grid were alsoanalyzed. At last,the axial compression bearing capacity formula was proposed.The simulations were done for the eccentric compression experiments ofenergy-saving block&invisible multi-ribbed composite wall. The simulation valuesshow that the finite element model is right. Then change the eccentricity to expand the parameters to simulate,analyzed the influence of eccentricity to the compressivebearing capacity of energy-saving block&invisible multi-ribbed composite wall andthe invisible multi-ribbed structure without energy-saving block. Additional,adetailed analysis on the stress of concrete frame grid.energy-saving block and thesteel bar were done. On the base of those research, the damage degree and thesynergistic effect between the energy-saving block and concrete frame wereanalyzed. Finally,fixed the capacity formula of energy-saving block&invisiblemulti-ribbed wall under eccentric compression.