Slab ballastless track self-compacting concrete pouring construction method

Abstract

The invention belongs to the technical field of high-speed railway ballastless track construction and belongs to a slab ballastless track self-compacting concrete pouring construction method. The method includes: pouring a concrete base; laying a track slab; utilizing a track slab accurate adjuster to adjusting planar position and altitude of the track slab to enable a gap to be formed between the bottom of the track slab and the concrete base; disposing a self-compacting concrete combined formwork on the concrete base to enable the side face of the formwork to tightly appress four side faces of the track slab; utilizing a limiting device to strengthening the self-compacting concrete combined formwork and the track slab; utilizing a pouring hopper to pour self-compacting concrete from middle reserved holes on the face of the track slab; and observing from vents arranged on angle moulds whether the self-compacting concrete reaches four corners or not, and stopping pouring when the self-compacting concrete level at the vents of the formwork exceeds the bottom of the track slab for a certain height. By the slab ballastless track self-compacting concrete pouring construction method, pouring quality of a self-compacting concrete filling layer is guaranteed while pouring efficiency is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of ballastless track construction for high-speed railways, and relates to a self-compacting concrete pouring method. Background technique [0002] On the basis of summarizing the research and application experience of my country's existing ballastless track, combined with the innovative research results of ballastless track technology, Chinese railway experts developed and proposed the CRTSIII type slab ballastless track with completely independent intellectual property rights. To create an innovative Chinese brand and meet the needs of railway construction and development. [0003] At present, the construction technology of CRTSIII slab ballastless track in China is still in the stage of research, exploration, improvement and perfection, especially involving the construction technology of pouring self-compacting concrete filling layer. [0004] Since the self-compacting concrete is filled in the gap betwee...

AI Technical Summary

Problems solved by technology

[0008] Using 2 or 3 holes reserved on the track slab surface for simultaneous pouring, it is very easy to form a bubble collection area at the intersection of concrete at the bottom of the slab, and the technological bubbles are not easy to discharge from the slab, which cannot guarantee the quality of concrete pouring

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