Node of connection of column and beam

Abstract

The invention discloses a novel column end node of a building structure, namely a column is connected with a floor slab by arranging two steel plates. The contact area of the two steel plates is smaller than the section area of a column end; the configured quantity of vertical steel bars of the column between the two steel plates is relatively less than that of the column end; the rigidity of the node and the bending resistance are lower than that of other parts of the column end; a control node area is an energy consumption area of the column, the column end is avoided from generating damage under the action of horizontal loading of earthquake or wind and the like and the safety of the whole column is protected, thus achieving the effect of strong column and weak beam of code requirements, improving the damage resistance of the building under the action of loading of earthquake and wind, and effectively protecting the safety of lives and property of people.

Description

technical field [0001] The invention relates to a joint of a reinforced concrete structure and a steel-concrete composite structure applied to construction engineering, in particular to a joint connecting a column and a beam. Background technique [0002] In the current reinforced concrete structure or steel-concrete composite structure, the structural systems include frame structure, shear wall structure, frame-shear wall structure, frame-tube structure, tube structure, and tube-in-tube structure. The interconnection of each component of the above-mentioned various structures adopts rigid connection. In general multi-storey and high-rise buildings, frame structures, frame-shear wall structures, and frame-tube structures are widely used due to their flexible layout and large space. [0003] The column and the floor of the conventional structure are rigidly connected. Under the action of load, the maximum bending moment of the column is located at the column end, and the col...

AI Technical Summary

Problems solved by technology

According to the research results of relevant experts and scholars, the rigidity of the floor slab is very large, the beams and slabs are equipped with steel bars, and the bending resistance of the floor slab is also very large. The building structure design carried out according to the relevant structural design codes of our country has not actually reached The results of "strong columns and weak beams" required by the code have great potential safety hazards

The survey results of the Wenchuan Earthquake showed that, under the action of the earthquake, the structure with frame components is mainly damaged at the end of the column, while the end of the beam is rarely damaged. A large number of buildings collapsed due to the damage of the column, causing huge lives. Property loss, the building did not really realize "strong columns and weak beams", which did not meet the requirements of the code

Once the column end is damaged, it is often impossible to repair. Therefore, to realize "strong column and weak beam" with the current structural form, it is bound to greatly increase the cross-sectional size of the column and the amount of reinforcement, but at the same time it brings the following problems: (1) Greatly increase the cost of the building; (2) affect the use of the building and reduce the effective use area; (3) increase the weight and rigidity of the structure, and further increase the earthquake effect, and quite a few columns even become short columns, further increasing the building cost

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