Numerical Simulation and Simplified Calculation of Bearing Capacity for Solid Fly Ash Foam Concrete Wall under Out-of-plane Eccentric Compression
This paper proposed a thermal insulation and load-bearing fly ash foam concrete walland investigate the mechanical properties of the wall under out-of-plane eccentric compression and analyze the parameters,in order to lay a foundation for the popularization and application of the wall in low-rise and multi-storey buildings in villages and towns.Three kinds of fly ash foam concrete wall models were designed,and ABAQUS finite element software was used to study the mechanical properties of the wall under out-of-plane eccentric compression.104 wall models were established and parametric analysis was carried out to study the influence of key parameters such as aspect ratio,built-in cold-drawn steel wire spacing,and thickness of cold-formed thin-walled C-section steel on the mechanical properties of the wall under out-of-plane eccentric compression.Finally,a simplified calculation formula for the out-of-plane eccentric compression bearing capacity of fly ash foam concrete walls with different cross-section parameters and aspect ratios is established.The damage location of the wall obtained by the finite element analysis was basically consistent with the test results,and the ratio of the finite element analysis value to the test result value of the ultimate bearing capacity of the wall was between 1.114 and 1.147.The influence of cold drawn wire spacing on the correlation curve of out-of-plane eccentric compression bearing capacity in the wall section parameters is positively correlated,and the height-width ratio and the thickness of cold-formed thin-walled C steel are negatively correlated.The calculation results of the simplified calculation formula of the out-of-plane eccentric compression bearing capacity are basically located inside the finite element analysis curve and the curve trend is consistent.It can accurately predict the out-of-plane eccentric compression bearing capacity of the fly ash foam concrete wall and provide a theoretical basis for the design of the wall in engineering practice.
foam concrete walleccentric compressionmechanical propertiesfinite element analysissimplified calculation
万方数据
维普
