Edge sealing formwork corner exhausting device for slab-type ballastless track self-compacting concrete

Abstract

The invention relates to an edge sealing formwork corner exhausting device for slab-type ballastless track self-compacting concrete, and belongs to the technical field of high-speed railway ballastless track building. The edge sealing formwork corner exhausting device is composed of a corner formwork 1, a movable door 2, a connector 3, a connector 4, a connecting rod 5, a plug pin 6, a bolt 7, a bolt 8, a bolt 9 and a bolt 10. The two ends of the corner formwork are connected with a straight-line segment formwork 11 and a straight-line segment formwork 12 respectively, and the movable door 2 is located over the corner formwork, opened by rotating around the connecting rod 5 and fixed by the plug pin 6 after being closed. The movable door is in an opened state when self-compacting concrete is poured and is closed after the structure is full of the self-compacting concrete. The edge sealing formwork corner exhausting device has the advantages of being simple in composition, being of an integrated structure and being capable of being installed in a narrow space formed in the end of the self-compacting concrete layer structure, full in exhausting effect and capable of solving the problem that due to the fact that the plugboard type exhaust hole position and form design of an original formwork is unreasonable, the defects such as cavities and bubble layers are prone to be generated in the corner of the structure after construction.

Description

technical field [0001] The invention relates to an edge-sealing formwork angle exhaust device for self-compacting concrete of a slab-type ballastless track, belonging to the technical field of ballastless track construction of high-speed railways. Background technique [0002] High-speed railway CRTSIII slab ballastless track is a new type of track structure with my country's independent intellectual property rights. It is composed of steel rails, fasteners, track slabs, self-compacting concrete layers, geotextile isolation layers and base plates. Among them, the self-compacting concrete layer is a key part related to the service life of the entire structure. In the process of self-compacting concrete construction, the upper prefabricated track slab is laid first, and then the self-compacting concrete is poured into the closed cavity under the track slab. The self-compacting concrete fills the entire mold cavity with its own good fluidity and filling ability. The track slab...

AI Technical Summary

Problems solved by technology

In the above-mentioned patents, the venting process of edge-banding formwork for self-compacting concrete is mentioned, which is characterized in that the vent holes are arranged on the formwork of the longitudinal straight section of the self-compacting concrete layer, and then closed with a plug-in plate. The edge-banding formwork is easy to process and install, but because the vent hole is not set at the farthest end of the self-compacting concrete layer structure, engineering applications reflect that although the self-compacting concrete formwork removal looks good under the vent hole setting method, the exhaust Doesn't work well and doesn't get rid of voids and foam layers at the farthest ends of the structure

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