Research And Analysis On Punching Shear Resistance Of Reinforced Concrete Slab-Column Connection Structure

Reinforce concrete slab-column connection structure which has the advantages with simply structural style, short power transmission way. It also can use the net height space efficient, bring the remarkable economic benefit with good applicability and changeability. For that reason, RC is used in actual constructure more and more popular. In other research people found that this structure will be under the shear while it in the slab-column connection so that it cause the punching shear. Punching shear is an brittle failure without waring which would make an severe damage for building. And some times the chain reaction of brittle failure would cause the collapsing of whole building. In a word, it is very important to do the research of the RC punching shear resistance.Although it has a lot of comments since we do this research for hundreds of years, it has complex problem in itself so that we still didn’t solve it with an system and completed analysis way. Base on the research before, this essay will analysis the RC punching shear capability and make an conclusion. The way in the blow:(1)By analysand researching reports through amount of concentrated load concrete experiment, we can make an conclusion about the theory of RC punching shear, the failure mode and the calculation method. Comparing the punch failure to the shear failure in failure characteristics and mechanism.(2)Analysis the research material, we can summary the factors which would effect the RC punch strength such as the strength and composition of RC, physical dimension, longitudinal reinforcement ratio, boundary constrain and so on.(3)Based on the finished data, we would get the proposed formulas of RC punching shear strength and we also can found that match the experiment we mentioned before, actual construction effectively.(4)We take the ANSYS software to do an sample model analysis then we could ger the data of the stress, the strain, displacement and some other data with the failure process. The model result matched with the experiment result al mostly. As a result, it is viable to use the ANSYS software modeling RC punch shear. For its convenient and effective, we could take this method guiding engineering practice.