Experimental study on mechanical behavior of RC supporting beam and brick masonry
In order to study the composite mechanical properties of the contact interface between the RC supporting beam and brick masonry,a total of 10 double beam sandwiched wall supporting members of three types were designed,and static loading tests were carried out on them,so as to study the influence of different contact areas and connection modes on the mechanical properties of the supporting beam.The test results show that there are three failure modes of the supporting members:first,shear slip failure along the interface between RC supporting beam and brick masonry;second,compressive failure of the upper brick masonry;and third,fracture of the interface between RC supporting beam and brick masonry and compressive failure of brick masonry.According to the experimental results,pin keys,the through-wall bar and supporting beam act synergistically,and the strain variation trend of steel bars is consistent.Both pin key connection and through-wall bar connection enhance the shear strength of the interface and increase the ultimate load of the members.The supporting members without connecting measures has the risk of brittle failure,so it is not recommended to use it in practical engineering.However,the members connected by pin keys and through-wall bars have ductile failure characteristics,which can meet the requirements of practical engineering.
RC supporting beambrick masonrypin keythrough-wall bar
NETL
NSTL
万方数据
