Subway plate type turnout self-compacting concrete pouring method and device

Abstract

The invention relates to a subway plate type turnout self-compacting concrete pouring method which is characterized by comprising the following steps: s100, self-compacting concrete is discharged to alarge pump hopper; s101, a large pump is started, low-speed operation is conducted, and the self-compacting concrete in the large pump hopper is conveyed into a small pump hopper beside a turnout plate through a metal pump pipe; s102, when the small pump hopper is about to be full, a small pump is started, the small pump is in a pumping state, and the self-compacting concrete is conveyed to a pouring hopper through a small-caliber rubber pump pipe; and s103, when the pouring hopper is about to be full, a discharging opening of the pouring hopper is opened, the self-compacting concrete is conveyed to the pouring portion, and pouring of the plate type turnout self-compacting concrete is completed. According to the subway plate type turnout self-compacting concrete pouring method and device,continuous pouring of the self-compacting concrete can be guaranteed, the pouring success rate is high, the time interval between pouring of the last turnout plate and pouring of the next turnout plate is short, the construction efficiency is high, and the construction labor intensity is low.

Description

technical field [0001] The invention relates to the technical field of railway construction, in particular to a self-compacting concrete pouring method and device for a subway slab turnout. Background technique [0002] The slab turnout slab system consists of a multi-layer structure, from bottom to top, it is a concrete base, a geotextile isolation layer, a self-compacting concrete layer and a prefabricated turnout slab. Because the subway enters another track from one track through a plate switch, or turns. Therefore, the plate turnout is usually tapered in the width direction. [0003] At present, the horizontal and vertical dimensions of the prefabricated turnout slabs in the subway project are relatively large, and it is difficult to transport the prefabricated turnout slabs in the narrow underground space. At the same time, in order to ensure the smooth connection between the turnout track and the ordinary track, it is generally necessary to construct the turnout firs...

AI Technical Summary

Problems solved by technology

However, the subway slab turnout generally adopts the construction technology of pouring the slab first and then installing the turnout rail. Since there is no turnout rail before the self-compacting concrete is poured, the self-compacting concrete cannot be directly transported to the working surface through the rail. At the same time, each The self-compacting concrete of the turnout slab must be poured at one time, and there must be no pause in the middle, which makes the construction of the self-compacting concrete pouring of the subway slab turnout difficult. The farther the slab turnout is from the feeding port, the more difficult it will be

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