Application And Study Of The Steel Fiber Concrete In Frame Node

Tensile property dispatches the inherent shortcoming of concrete is bad tensile property, at present with concrete intensity rise which is obvious outstanding. The fiber that has height tensile strength and big limit tensely rates puts in the concrete, which can improve the concrete function. But the steel fiber that adds in the concrete is the most extensive application. The steel fiber concrete (simplify for SFRC) is a kind of new compound material, which is made of mixing chaos in average concrete and distributing short steel fiber.The joint is the important component of frame structure, and the seismic behavior of joint directly impacts the seismic resistance function of entire structure. The intensity sum shears tensely in adding steel fiber within frame node can improve obviously the person resisting to crack, the stirrup resolving node area concentrated, improve the condition being under construction, improves the architectural overall function.Basic on steel fiber concrete research result has been listed in the main body of a paper in combing pre-hominid, the system has discussed fundamental steel fiber concrete theory, has discussed the steel fiber concrete application in frame node. Referring relevant experiment model and using finite element analysis, infinite analysis is conducted by modeling and loading of T shaped frame joint, considering factors such as different steel fiber content and whether arrange steel in the joint zone. The node summing up the T type frame tests that the shear bears the weight of the formula secretly scheming against strenuously with analysis results, giving a tapping fiber concrete frame a node.It is indicated by the research result that adding steel fiber to the joint zone can improve the cracking intensity and utmost loading property, restrain the development of crack, and promote the whole seismic behavior.