Rectangular concrete filled steel tubular column - steel beam connection node and construction methods thereof

Abstract

The invention belongs to the technical field of architectural structure engineering and relates to a rectangular concrete filled steel tubular column - steel beam connection node. The rectangular concrete filled steel tubular column - steel beam connection node comprises an upper through partition board (3), a lower through partition board (4), a connection board (5) and a high-strength bolt (6). The rectangular concrete filled steel tubular column - steel beam connection node is characterized in that the upper through partition board (3) and the lower through partition board (4) penetrate through the wall of a rectangular concrete filled steel tubular column (1) and are in bevel welding connection with the periphery of the wall, the connection board (5) is connected between the lateral wall of the rectangular concrete filled steel tubular column (1) and a web of a steel beam (2), the lower through partition board (4) is connected with the bottom flange of the steel beam (2) through the high-strength bolt (6), and the upper through partition board (3) is in bevel welding connection with the upper flange of the steel beam (2). The invention further provides two construction methods of the rectangular concrete filled steel tubular column - steel beam connection node. The rectangular concrete filled steel tubular column - steel beam connection node and the construction methods thereof have the advantages that location is fast for site installation, the construction period can be shortened obviously, and the prefabricated construction progress is promoted.

Description

Technical field [0001] The invention belongs to the technical field of building structure engineering, and in particular relates to a rectangular steel pipe concrete column-steel beam connection node and a manufacturing method thereof. Background technique [0002] Concrete filled steel pipe structure is composed of steel pipes filled with concrete. The existence of steel pipes can prevent premature cracking of concrete, and the existence of concrete can prevent premature buckling of steel pipes. The joint work of the two can give full play to the high tensile performance of steel and the good compressive performance of concrete. Therefore, it has many advantages such as high bearing capacity, good plasticity and toughness, good seismic performance, significant economic benefits and environmental protection in construction. [0003] The rectangular concrete-filled steel tube structure has the advantages of high flexural rigidity and convenient joint connection. The frame st...

AI Technical Summary

Problems solved by technology

[0005] (1) Due to the difficulty of welding inside the joint, the pouring of concrete in the pipe is also affected by the inner diaphragm joint, which is often limited by the side length of the pipe string in application

In addition, there are beam flanges and inner partitions welded on both sides of the same position of the steel pipe column, and the steel is hot-processed twice, which tends to generate large residual stress, resulting in brittle failure near the weld

Although the structure of the joint itself is intended to make the plastic hinge appear at the beam end, the stress concentration at the weld affects the development of the plastic hinge

[0006] (2) Due to the structural characteristics of the node itself, the outer ring plate node has poor adaptability and flexibility

However, due to the need to process and construct a large number of bolts and bolt holes, the cost is very high; and because bolt installation requires a long overhanging partition, the accuracy of bolt processing and on-site beam-column installation and positioning accuracy are very high. Once the column is tilted or The beam cannot be centered, and the construction will be very difficult

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