Shear Performance Of Load-Bearing Horizontal-hole Interlock Concrete Blocks Masonry

As solid clay bricks are obsoleted and new wall materials begins to boom,the 田-shaped and H-shaped load-bearing horizontal-hole interlock concrete blocks(LB-HHICHBs)emerge as time required.It is the block that has not only the advantage of self-supporting horizontal-hole interlock concrete blocks hold,but also high load bearing capacity and being used for loading-bearing walls.Aimed at taking LB-HHICHBs into effect on construction in small town and rural areas,systematical tests are supposed to be conducted.As per specifications requirements,the clear conclusion concerning the serviceability should be drawn.On the basis of the material properties experiments,this dissertation does a research on the block’s shear strength of the masonry.The first step is to make masonry three samples of LB-HHICHBs on the ground of test specifications.LB-HHICHBs include three types,each of which regard mortar strength as independent variable.Mortar degrees are Mb5,Mb10 and Mb15.Ultimate bearing capacity and the area of shear surface are measured by static loading test,and the final is to calculate shear strength.Experimental results show that shear strength of three block masonrys meet specifications’ requirement.Furthermore,the higher shear strength is,the higher mortar strength becomes.Apart from that,experimental phenomena are analyzed in accordance with existing theories,and the dissertation takes on comparing test results with standard values.However,taking account into the fact that code formulas are not inadequate for calculating shear strength of the masonry,test datas are used for linear-regression analysis and new formulas are fitting.The result shows that the new formulas agree more with experimental results,and enables to be used for shear samples like the blocksAt length,the finite element analysis software is used for simulating three LB-HHICHBs masonrys.It indicates that simulation of stress process,the failure modes agree well with experimental phenomena,and the modeling,constitutive relationship as well as mesh is complinat for LB-HHICHBs.