Finite element analysis of mechanical properties for shear connectors with reduced web section
An innovative shear connector with reduced web section(RWC)was proposed to improve the shear capacity of prefabricated concrete beam-column-steel supports.Two RWC specimens with steel plate cross-section allocation were designed for reciprocating loading test to study mechanical properties.ABAQUS software was used for finite element analysis and correction,then 16 finite element models were developed to investigate the influencing factors of concrete strength,web width and height,and two sets of web combination forms.The results showed that the failure modes of the two specimens were basically the same;oblique cracks firstly appeared on the side of a concrete beam and progress towards the front,then cracks developed on the shear web,and finally,the concrete was crushed under repeated loading cycles.The trend of the two hysteresis curves was basically the same,including three stages:elasticity,elastic-plasticity and failure.Increasing the strength of concrete can effectively improve shear bearing capacity.In a constant cross-sectional area web,the connector with a cross-sectional size of 15 mm×32 mm has larger bearing capacity.In addition,with two sets of webs changing size,the specimens with section sizes of 18 mm×40 mm and 6 mm×40 mm has better shear capacity.
shear connector with reduced web sectionmechanical propertiesfinite element analysisfailure modehysteresis curve
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