Size Effect On Mechanical Property Of Frames Infilled With Dry-stacked Masonry Walls

As one of the most widely used form of building structures, frames withinfiiled walls has advantages as flexible architecture and large interior space and soon. Because of the convenience construction, large lateral stiffness and ductilityenergey andvantages, steel frames are used more and more in the project. As a newstructure, the dry-stacked masonry wall has advantages such as good ductility, littlestiffness and obviously improve the resist lateral forece of strctures and so on. Theresearch on frames infilled with dry-stacked masonry wall has important significanefor the actual project. This thesis mainly research the impact of masonry block sizeand wall dimensions and column-beam size effect on mechanical properties of steelframe infilled with dry-stacked masonry. The thesis mainly includes the followingcontent.Use the finite element software ANSYS proceed for static test simulation of thesteel frame with dry-stacked masonry wall, compared with the test data to verifythe reasonableness of the simulation model, analyze the machanical properties ofthe model, draw the conclusion that the maonry wall can improve the overall forceresisting and wall stress distribution in line with the sliding layer displacements.Present and derivation the theoretical formula of the lateral resisting force andlateral stiffness for the steel frame with dry-stacked masonry wall.Build different conditons of masonry block size for steel frames withdry-stacked masonry wall models. Plot the force-displacement curve, stiffnessdegradation curves, hysteresis curves, skeleton curves, combined with themechanical properties of structural stress distribution, analysis and research on theeffects of small size, medium and large size of masonry parameters and differenthighth-width ratio of wall parameters. We found that highth-width ratio is the mainfactor affecting the force mechanism of the structure. Analyse and research thethree size of masonry block model conditions and different parameters onmechanical properties of steel frame with dry-stacked masonry wall, we found thatmasonry block size has different effect on wall stress distribution, stiffnessdegradation and lateral force resisting of structures. Reach some conclusions andprovide some reference for the engineering structures.Build different conditons of wall dimensions and column-beam size for steelframes with dry-stacked masonry wall models, analyze and research from capacity,stiffness, stress distributin and energy consumption of stuctures, the study foundthat the wall size and the different column-beam rigid ratio has a significant impact on the overall mechanical properties of the whole structure. Through the fine singlespan model, set up double and triple floor of steel frame fiiled with dry-stackedmasonry wall models, give a horizontal displacement load and analyze themechanical properties of the structures, change the parameters and research theeffects for the models. Investigate the stress distribution and other mechanicalpropertis of the structure, research the mechanical development and mechanism ofthe structure, finally give some conclusions and advices, achieve the purpose ofstructural optimization.