Penetration type connection reinforcement structure of concrete steel pipes and two or more sleeper blocks

Abstract

The invention discloses a penetration type connection reinforcement structure of concrete steel pipes and two or more sleeper blocks. The structure is used for a concrete steel pipe sleeper of a ballastless track, the concrete steel pipe sleeper comprises the sleeper blocks (1) and the concrete steel pipes (2) connected with the sleeper blocks (1) in a transverse direction of the track, the sleeper blocks (1) are formed by pouring concrete, each concrete steel pipe (2) is arranged in manufacturing molds of every two adjacent sleeper blocks (1) by using a hollow steel pipe, every two adjacent sleeper blocks (1) are poured into a whole body in the pouring process, and meanwhile each hollow steel pipe is fully filled with the concrete. The structure is characterized in that open holes are transversely formed in the portions, inserted into the sleeper blocks (1), of the hollow steel pipes, and transverse reinforcing members (3) penetrate through partial or all the open holes in every two hollow steel pipes to reinforce the connection between the concrete steel pipes (2) and the sleeper blocks (1).

Description

technical field [0001] The invention belongs to the related technical field of ballastless track, and relates to a technology for connecting multiple concrete blocks by using concrete filled steel tubes, and more particularly relates to a penetrating connection strengthening structure between concrete filled steel tubes and sleeper blocks. Background technique [0002] In the railway ballastless track system, there is a kind of prefabricated sleeper. The sleeper is installed in the ballast bed or poured with concrete and the ballast bed as a whole. It is used to install fasteners, further fix the upper rail, and maintain good connection performance with the ballast bed. [0003] Chinese patent document CN105463948B discloses a concrete-filled steel tube sleeper suitable for ballastless tracks. The concrete-filled steel tube is used as the connecting part of the sleeper block. Deformation during storage, transportation, etc.; at the same time, through the integral molding of ...

AI Technical Summary

Problems solved by technology

[0006] Difficulties in bundling, hoisting and stacking of prefabricated double-block CFST sleepers during transport to the construction site

[0007] After the prefabricated concrete sleeper is transported to the construction site of the track line, during the on-site pouring process of the track bed slab, the embedded part of the sleeper block is not firmly connected with the post-cast track bed slab concrete, and there is a durability problem between the new and old concrete, which will cause Cracks and other diseases, these still need to be improved

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