Beam string structure with buckling-restrained brace rod and using method thereof

Abstract

The invention relates to the technical field of building structures, and discloses a beam string structure with a buckling-restrained brace rod, which comprises an upper chord main beam, the buckling-restrained brace rod and an inhaul cable, the buckling-restrained brace rod comprises an outer sleeve, a filling layer and an inner core which are sequentially arranged from outside to inside, one end of the inner core is hinged to the upper chord main beam through a connecting node, and the other end of the inner core is connected with the inhaul cable through a clamping plate pulley node. The outer sleeve of the buckling-restrained brace rod can effectively control transverse deformation of the inner core under the action of an earthquake load, so that the bearing capacity of the brace rod is improved; the inner core is matched with the outer sleeve, so that earthquake energy can be effectively dissipated through plastic deformation; and after the inner core reaches a yield state, the inner core is pressed, bent and damaged, the constraint outer sleeve temporarily serves as a bearing component of the supporting rod, and the buffering effect on structural damage of the beam string structure is achieved. The invention further discloses a using method of the beam string structure with the buckling-restrained brace rods.

Description

technical field [0001] The present application relates to the technical field of building structures, for example, it relates to a string beam structure with buckling-resistant braces and a method for using the same. Background technique [0002] The string beam structure is a new type of self-balancing hybrid structure system formed by the upper chord main beam of rigid components, flexible cables and struts connected in the middle. It is a large-span prestressed space structure system. Engineering has a wide range of applications. [0003] However, when the structure is subjected to accidental dynamic loads such as earthquakes, the internal force of the lower string cables and the pressure on the struts increase rapidly. The struts of the traditional tension beam structure are only composed of a single steel pipe, which is prone to bending failure under pressure, and the energy consumption form is single , the bearing capacity is weak, which can easily lead to the instabi...

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Problems solved by technology

[0003] However, when the structure is subjected to accidental dynamic loads such as earthquakes, the internal force of the lower string cables and the pressure on the struts increase rapidly. The struts of the traditional tension beam structure are only composed of a single steel pipe, which is prone to bending failure under pressure, and the energy consumption form is single , the bearing capacity is weak, which can easily lead to the instability of the string beam structure and the collapse of the entire structure

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