Experimental study on bearing capacity of end-plate-supporting multi-ribbed composite concrete plate
The end-plate bearing multi-ribbed composite plate is a new type of composite plate designed after the series process with the main rib being folded at the end,the main reinforcement being bent up at the end,and then being welded with the shear angle steel parts.It is mainly used in modern logistics warehousing and other scenes with large bearing capacity and high space requirements.In order to study the stress and failure characteristics of multi-ribbed precast plate during construction,a simply supported and uniformly distributed static load test of multi-ribbed precast plate was designed,and the bearing capacity and bearing characteristics of precast plate were analyzed.The test shows that the bending strength of the multi-ribbed concrete precast plate decreases with the increasing of load.The bearing position breaks when the bearing reaches its maximum bearing capacity and the angle steel reaches the yield strain.The failure characteristics of the multi-ribbed concrete precast plate are similar to the failure mode of the reinforced beam,and the failure process of the component can be divided into three stages.Finally,the finite element simulation software ABAQUS was used to analyze the deformation state of the angle steel and the strain of the longitudinal reinforcement at different parts in the four stages of loading.The experimental results were compared with the ABAQUS simulation results.It is concluded that the finite element simulation can better simulate and present the failure mode of the multi-ribbed concrete precast plate.The results can provide a basis for the study of the subsequent composite slab.
multi-ribbed composite plateconcrete prefabricated componentsbending resistanceload-displacement curvefinite element
万方数据
维普
