| Beam column joint,an important part of the reinforced concrete frame structure,is recognized as the weak structure in the earthquake resistant system of the frame structure.That is because the joint belongs to the stress disorder area,it responsible for the bending moment,shear force and axial force of the beam or column members.It is also the problem-prone parts in the actual project node area,which makes the node area becomes more weak.In each earthquakes,there are always some reinforced concrete frame structure lead to the whole building collapsed due to the nodes ill-consider or improper construction.In order to explore and solve the existing problems of the beam column joints,this paper firstly analyses the reason of the damage of the beam-column joints and the stress mechanism.On this basis,the paper combined with engineering examples discussed the problem in the actual engineering then put forward target control methods and measures.Secondly,the installation of reinforced and concrete pouring quality of this engineering are analyzed by field measuring and non-destructive testing then the results of the analysis reflect the damage degree of the beam-column joints;finally,the force and destruction phenomenon of the beam-column joints are analyzed by simulation which can provide reference for the design and construction of the frame beam-column joints.In this paper,the problem appeared in the access of the construction and the design of the beam-column joints are analyzed thoroughly and the paper provides some reference for node design,preparation of node construction scheme and guidance construction by consulting literature,visiting builder and combining the work practices. |
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