High-strength connecting structure for concrete-filled steel tubular support

Abstract

The invention discloses a high-strength connecting structure for a concrete-filled steel tubular support. The high-strength connecting structure is provided with an inner connecting piece, so that a first-stage concrete-filled steel tubular support and a second-stage concrete-filled steel tubular support can be quickly mounted and fixed; the fixed connection between the first-stage concrete-filledsteel tubular support and the second-stage concrete-filled steel tubular support is realized; accommodating gaps are formed among two side surfaces of an intermediate ladder end surface with a largecross-sectional area of the inner connecting piece and the end surface of the first-stage concrete-filled steel tubular support or the end surface of the second-stage concrete-filled steel tubular support; the injection of slurry is facilitated; an auxiliary tensioning assembly is further arranged; the high-strength connecting structure is further provided with an outer connecting piece, and the outer connecting member is filled with slurry, so that the strength of a connecting portion can be strengthened well and the connection reliability can be improved; by arrangement of a tightening net rack, the axial connection tension can be effectively increased while the radial connection force is ensured, and the connection strength between the first-stage concrete-filled steel tubular support and the second-stage concrete-filled steel tubular support is increased.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to a high-strength connection structure for steel tube concrete supports. Background technique [0002] Concrete is one of the most important contemporary civil engineering materials. It is prepared in a certain proportion from cementitious materials, granular aggregates (also known as aggregates), water, and admixtures and admixtures added when necessary. It is a kind of artificial stone material that is mixed, densely formed, cured and hardened. Concrete has the characteristics of rich raw materials, low price and simple production process, so its consumption is increasing. At the same time, concrete also has high compressive strength and good durability. , Wide range of strength grades and other characteristics, these characteristics make it widely used, not only in various civil engineering, but also in shipbuilding, machinery industry, marine development, geothermal engine...

AI Technical Summary

Problems solved by technology

[0003] A Chinese patent discloses a retractable connection device for concrete-filled steel tube supports (authorized announcement number CN206439060U). This patented technology can connect two steel tube supports through springs, internal plastic pipes and concrete, and realizes the retractable support of steel tube concrete supports. It has a large amount of shrinkage, and does not need to manually adjust the connecting device to limit or realize the retraction. When the pressure is applied, the support structure can gradually realize the compression and retraction without being damaged once compressed. However, at present The joints of the common steel pipe concrete brackets on the market cannot realize the rapid installation of the two brackets. During use, the connection strength of the joints of the two brackets is not enough, and the joints cannot be reinforced. Abrasion occurs, and even corrosion to the surface of the bracket

[0004] In order to realize the rapid installation of the bracket, most of the thread connection is currently used. However, in this way, the connection strength of the thread connection is often greatly affected. This structure is difficult for occasions with high strength requirements. fulfil requirements

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