Influence Analysis For Weakness Of Joints Of Frame Structure And Research Of New Anchor Method

The joints of column-beam are very important as the component ofthe frame structure, the earthquake materials from our country andforeign indicate that the destruction of the joints district is very obvious.Though joints question get certain attention already, "strong joints"design theory get out of already, but in real construction of joints, becausebeam muscle, column muscle, and hoop muscle of joints district areintricate, it will makes a lot of problem about pouring, shaking and otherprocess of concrete, and it is possible that the problem leads to the lowquality of concrete of the joints district.The paper introduces the course of joints strength, receiving strengthmechanism and the bonding-anchor properties of RC at first. And throughthe finite model of frame construction, it analyzes that the bad influenceof the capacity strength for the weakness joints and the key importance of the frame joints. Using the Ansys simulation of finite element, threemodels of spatial steel and concrete under kinds of operating situationsare created of not weakened joints model, weakened joints model andnew joints model the paper puts forward, and then comparing the resultsof the three models about strength, deformation. From the comparison,there are two collections, one is that the weak joints will put down thecapacity of strength obviously; the other is that the new method has thesame ability of the strength as the not weakened joints, and it can promotethe capacity of shear strength of joints. From the above, the conclusion isthat the new bond-anchor method of joints is useful and convenientduring the process of operation to solve the problem of weakened joints,and it provides the essential theory basis for this method practicalapplication.