Combined beam column joint design method

Abstract

The invention relates to a combined beam-column joint design method, and belongs to the technical field of civil engineering. The method comprises the following steps: (1) determining a calculation model, and simplifying the calculation model into three calculation models according to different stresses: a neutral axis is positioned in a concrete floor slab under positive loading, a neutral axis is positioned in an outer ring plate flange under positive loading, and negative loading is carried out; (2) determining the internal work of the outer ring plate; (3) determining the internal work ofthe steel pipe; (4) determining the plastic yield shear force of the hollow column beam-column joint part; And (5) determining the flexural capacity of the combined beam-column joint under the three calculation models, and considering the floor slab effect in the calculation of the bearing capacity, so that the design of the combined beam meets the requirements of strong column and weak beam ', thereby enhancing the anti-seismic collapse capacity of the building.

Description

technical field [0001] The invention relates to a design method for combined beam-column joints, which belongs to the technical field of civil engineering. Background technique [0002] The beam-column joint structure adopting the outer ring plate connection is as follows: the steel pipe column is connected with the beam by setting the outer ring plate at the upper and lower flanges of the beam to transmit the bending moment at the beam end. At the same time, a vertical plate is set between the upper and lower ring plates to transmit the beam end shear force. The advantage of this node is that it adopts the outer ring plate beam-column connection, which can be connected far away from the node area, and various connection methods such as welding and bolt connection can be used, which can reduce the construction difficulty and ensure the construction quality at the same time. It is conducive to the promotion of prefabricated buildings; from the perspective of structural desig...

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Problems solved by technology

Some studies have proposed its strength calculation formula, but the formula does not consider the influence of the combination of concrete floors and steel beams. my country's seismic codes require the design of "strong columns and weak beams", while H steel beams and floors with studs form composite beams. , if this design does not consider the effect of the floor slab, it will lead to "strong beam and weak column".

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