Steel tube concrete support connecting structure and connecting construction method thereof

Abstract

The invention provides a steel tube concrete support connecting structure and a connecting construction method thereof. The connecting structure comprises a first section of a steel tube concrete support, a steel tube, particles, a connecting mobile column, a steel washer, a second section of the steel tube concrete support and a concrete core. The connecting construction comprises the steps that both ends of the first section of the steel tube concrete support and the second section of the steel tube concrete support are provided with empty tube sections without concrete, the first section of the steel tube concrete support is connected with the second section of the steel tube concrete support by the connecting mobile column, and the tail end of the first section of the steel tube concrete support and the tail end of the second section of the steel tube concrete support are filled with the particles. The steel tube concrete support connecting structure can connect multi-section steel tube concrete into supports of all shapes, is simple in operation, simplifies construction technology, has good anti-impact and dynamic pressure performances, and can be widely applied to the supporting of soft surrounding rock and roadway with the properties of large deformation and uneven force bearing.

Description

technical field [0001] The invention relates to roadway support technology, in particular to a steel pipe concrete support connection structure and a connection construction method, which is mainly applicable to the connection of steel pipe concrete support used in roadways with large deformation and uneven stress, and can produce expansion and contraction under dynamic pressure. Background technique [0002] Concrete-filled steel tube support is a new type of support structure with excellent mechanical properties, reasonable cost, various specifications, and suitable for various geological conditions. [0003] The connector of the steel tube concrete support is a key part of the support, and its performance directly affects the overall stability, shrinkage and bearing capacity of the support. The connection of steel pipe concrete support is divided into sleeve connection and flange connection; these connection methods cannot well adapt to the roadway with large deformati...

AI Technical Summary

Problems solved by technology

The connection of steel pipe concrete support is divided into sleeve connection and flange connection; these connection methods cannot well adapt to the roadway with large deformation and uneven stress distribution, and it is difficult to exert the good mechanical properties of the support structure. In addition, these connection structures are complex and difficult to install. Complicated and expensive to manufacture

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